KSC-STD-C-0001D
                                                             April 11, 1994
                                                                 Supersedes
                                                            KSC-STD-C-0001C
                                                           February 3, 1992

                 STANDARD FOR PROTECTIVE COATING OF CARBON
                  STEEL, STAINLESS STEEL, AND ALUMINUM ON
                    LAUNCH STRUCTURES, FACILITIES, AND
                         GROUND SUPPORT EQUIPMENT

                    ENGINEERING DEVELOPMENT DIRECTORATE
                                                            KSC-STD-C-0001D
                                                             April 11, 1994
                                                                 Supersedes
                                                            KSC-STD-C-0001C
                                                           February 3, 1992

                 STANDARD FOR PROTECTIVE COATING OF CARBON
                   STEEL, STAINLESS STEEL, AND ALUMINUM
                   ON LAUNCH STRUCTURES, FACILITIES, AND
                         GROUND SUPPORT EQUIPMENT

                    Approved By:

                    ___________________________________
                    Walter T. Murphy
                    Director of Engineering Development

                    JOHN F. KENNEDY SPACE CENTER, NASA
                             TABLE OF CONTENTS

Section        Title                                        Page

1.             SCOPE                                    1

1.1            Zones of Exposure                            1
1.2            Method of Specifying Coating Requirements              2

2.             APPLICABLE DOCUMENTS                     2

2.1            Governmental                                 2
2.1.1               Specifications                               2
2.1.2               Standards                               3
2.1.3               Publications                                 3
2.2            Non-Governmental                             4

3.             REQUIREMENTS                             6

3.1            Materials                                6
3.1.1               Abrasive Blasting Aggregate                       6
3.1.2               Protective Coatings, Thinners, and
                  Cleaners                                  6
3.1.2.1             Inorganic Zinc Coatings                      7
3.1.2.2             Primer and/or Intermediate Coatings                    7
3.1.2.2.1      Inhibitive Polyamide Epoxy Coatings                    7
3.1.2.2.2      Noninhibitive Polyamide Epoxy Coatings            8
3.1.2.2.3      Water-Reducible Intermediate Coatings             8
3.1.2.3             Finish Coatings                              9
3.1.2.3.1      Aliphatic Polyurethane Coatings                   9
3.1.2.3.2      Water-Reducible Topcoats                     9
3.1.2.3.3      Inorganic Topcoats                           9
3.1.2.4             Epoxy Mastic Coatings                        10
3.1.2.5             Coal Tar Epoxy                          10
3.1.2.6             Potable Water Epoxy                          10
3.1.2.7             Nitrile Rubber/Aluminum Coating                   11
3.1.2.8             Nonskid Coating                              11
3.1.3               Sealants/Caulking                            11
3.1.4               Wash Primer                                  11
3.2            Equipment                               11
3.2.1               Compressed Air                          11
3.2.2               Abrasive Blasting System                     11

                         TABLE OF CONTENTS (CONT)

Section        Title                                    Page

3.2.3               Coating Application System                        12
3.2.4               Breathing Air                                12
3.3            Safety Requirements                               12
3.3.1               Environmental Requirements                        13
3.3.2               Personal Protective Equipment (PPE)               13
3.4            General Requirements                              13
3.4.1               Applicator Qualifications                         13
3.4.2               Preparation of Surfaces                      13
3.4.2.1             Cleaning and Degreasing                      14
3.4.2.2             Abrasive Blasting                            14
3.4.2.3             Mechanical Cleaning Methods                  15
3.4.3               Application of Coatings                      15
3.4.3.1             Coatings Systems                             15
3.4.3.2             Colors                                       15
3.4.3.3             Storage of Coating Materials                      16
3.4.3.4             Mixing and Application Instructions                    16
3.4.3.5             Weather Conditions                           17
3.4.3.6             Methods of Application                       17
3.4.3.7             Coating Finish                                    17
3.4.3.8             Touchup of Welds and Damaged Coatings                  17
3.4.3.9             Coating, Drying, and Curing                       17
3.4.4               Sealing/Caulking                             17
3.5            Specific Requirements                             18
3.5.1               Protection of Carbon Steel                        18
3.5.1.1             Protection With Inorganic Zinc                    18
3.5.1.1.1      Mechanical Cleaning of Carbon Steel                    18
3.5.1.1.2      Abrasive Blasting of Carbon Steel                 18
3.5.1.1.3      Stripe Coat Application                      19
3.5.1.1.4      Application of Inorganic Zinc Coatings            19
3.5.1.1.5      Topcoat Systems for Zinc Coatings                 19
3.5.1.2             Protection by Galvanizing                         20
3.5.1.2.1      Galvanizing                                  20
3.5.1.2.2      Surface Preparation of Galvanizing                20
3.5.1.2.3      Coating Systems for Galvanizing                   21
3.5.2               Protection of Aluminum                       22
3.5.2.1             Surface Preparation of Aluminum                   22
3.5.2.2             Protective Coatings                               22
3.5.3               Protection of Stainless Steel                     23
3.5.3.1             Surface Preparation of Stainless Steel                      24

                         TABLE OF CONTENTS (CONT)

Section        Title                                    Page

3.5.3.2             Protective Coating                           24
3.5.4               Underground, Submerged, or Continuously
               Wetted Surfaces                              24
3.5.5               Coating Systems for Potable Water Immersion
               Service                                      25
3.5.6               Provision for Nonskid Surfaces                    25
3.5.7               Repair of Applied Coatings                        25
3.5.8               Maintenance of Existing Coatings                  25

4.             QUALITY ASSURANCE PROVISIONS             26

4.1            Responsibility for Inspection                     26
4.2            Requirements for Inspection                       27
4.3            Inspection Hold Points                            28
4.4            Inspection Forms                             28
4.5            Inspection Prior to Surface Preparation
               and Coating Application                      28
4.5.1               Surface Condition                            28
4.5.2               Protection of Adjacent Surfaces                   28
4.5.3               Ambient Weather Conditions                        29
4.5.4               Compressed Air Cleanliness                        29
4.5.5               Surface Salt Concentration                        29
4.6            Surface Preparation Inspection                    29
4.6.1               Abrasive Blasting Material                        29
4.6.2               Blast Nozzle Air Pressure and Size                     29
4.6.3               Degree of Surface Cleanliness                30
4.6.4               Surface Profile or Roughness                      30
4.6.5               Blasting of Abrasive-Sensitive Components                   30
4.7            Coating Application Inspection                    30
4.7.1               Surface Condition                            30
4.7.2               Coating Materials                            30
4.7.3               Storage of Coating Material                       30
4.7.4               Mixing and Application of Coatings                     30
4.7.5               Coating Finish and DFT                       31
4.8            Caulking Inspection                               31
4.9            Galvanizing Inspection                            31

                                     
                                     
                                     
                                     
                         TABLE OF CONTENTS (CONT)

Section        Title                                    Page

5.             PREPARATION FOR DELIVERY                     31

6.             NOTES                                    31

6.1            Intended Use                                 31
6.2            Additional Related Information                    31

APPENDIX A          APPROVED PRODUCTS LIST FOR INORGANIC ZINC
               COATINGS                                 A-1

APPENDIX B          APPROVED PRODUCTS LIST FOR TOPCOAT
               SYSTEMS                                  B-1
                        ABBREVIATIONS AND ACRONYMS

ANSI      American National Standards Institute
ASTM      American Society for Testing and Materials
cfm       cubic feet per minute
DE-EMO    Engineering Development Directorate, Environmental Management
          Office
DFT       dry film thickness
DM-MSL    Mechanical Engineering, Materials Science Laboratory
DOD       Department of Defense
FED       Federal
GFE       Government-furnished equipment
GSE            ground support equipment
KHB       Kennedy handbook
kPa       kilopascal
KSC       John F. Kennedy Space Center
ksi       kip per square inch
MD-MED    Biomedical Operations and Research Office, Medical and
          Environmental Health Office
MIL       military
MPa       megapascal
NACE      National Association of Corrosion Engineers
NASA      National Aeronautics and Space Administration
NICITCP   National Association of Corrosion Engineers (NACE) International
          Coating Inspector Training and Certification Program
NIOSH     National Institute of Occupational Safety and Health
no.       number
NSF            National Sanitation Foundation
OSHA      Occupational Safety and Health Act
PPE       personal protective equipment
psi       pounds per square inch
RT-SAF    Safety and Reliability, Safety Operations Division
SI-PMS    Center Support Operations, Propellants Consumables Management
          Staff
SSPC      Steel Structures Painting Council
STD       standard
TCLP           Toxicity Characteristic Leaching Procedure
T.O.      technical order
VAB       Vehicle Assembly Building
VOC            Volatile Organic Content
             STANDARD FOR PROTECTIVE COATING OF CARBON STEEL,
            STAINLESS STEEL, AND ALUMINUM ON LAUNCH STRUCTURES,
                 FACILITIES, AND GROUND SUPPORT EQUIPMENT

1.  SCOPE

This document establishes standard requirements for the application of
protective coatings to prevent corrosion of exposed carbon steel, stainless
steel, and aluminum.  This standard is applicable to launch structures,
facilities, and ground support equipment.  It provides a design standard to
experienced corrosion control engineers for the development of
specifications including requirements for materials, equipment, safety,
procedures, and quality assurance inspections.  Due to the ever changing
environmental considerations, new advances in corrosion technology and the
wide array of possible applications, this document should not be used as a
stand-alone specification that meets every contingency.  Refer to 6.1 for
the intended use and surfaces to be coated according to this standard.

1.1  Zones of Exposure. - The following zones of exposure are established
to define coating system requirements for surfaces located in specific
environments:

        a. Zone 1. - Surfaces that receive rocket engine exhaust
        impingement.

        b. Zone 2. - Surfaces that receive elevated temperatures [above 65
        degrees Celsius (above 150 degrees Fahrenheit)] and acid
        deposition from solid rocket booster exhaust with no exhaust
        impingement.

        c. Zone 3. - Surfaces, other than those located in Zones 1 or 2,
        that receive acid deposition from solid rocket booster exhaust
        products or that receive other types of chemical contamination
        (e.g., cooling towers, diesel exhaust stacks, etc.).

        d. Zone 4. - Surfaces not located in the launch environment but
        located in the corrosive marine environment of John F. Kennedy
        Space Center (KSC), such as the Vehicle Assembly Building (VAB),
        industrial areas, and indoor nonair-conditioned environments.

        e. Zone 5. - Continuous indoor air-conditioned environment.

1.2  Method of Specifying Coating Requirements. - Specifications
referencing this standard shall include the type of surface to be coated,
the zone of exposure, surface preparation, defined paint system, coating
thicknesses and, when applicable, the finish color required.  These
requirements should be assembled in a coating schedule for easy reference.
The coating specification should contain the following key elements:
scope, applicable documents, submittals, environmental protection, waste
management, safety/personnel protection, materials, tools and equipment,
environmental conditions, work schedule, surface preparation (including a
listing of abrasive-sensitive hardware to be prepared or protected),
coating schedule, coating mixing and application, quality control
inspection, reporting, and final acceptance.

2.  APPLICABLE DOCUMENTS

The following documents form a part of this document to the extent
specified herein.  When this document is used for procurement, including
solicitations, or is added to an existing contract, the specific revision
levels, amendments, and approval dates of said documents shall be specified
in an attachment to the Solicitation/Statement of Work/Contract.

2.1  Governmental.

2.1.1  Specifications.

        John F. Kennedy Space Center (KSC), NASA

                                 KSC-E-165           Electrical Ground
                             Support Equipment, Fabrication, Specification
                             for

                                 KSC-SPEC-F-0006     Heat and Blast
                             Protection Coating Materials

        Federal

                                 TT-S-230                  Sealing
                             Compound, Elastomeric Type, Single Component
                             (for Caulking, Sealing, and Glazing in
                             Buildings and Other Structures)

        Military [Department of Defense (DOD)]

                                 DOD-C-24667               Coating System,
                             Nonskid for Roll or Spray Application
                             (Metric)

                                 DOD-P-15328               Primer (Wash)
                             Pretreatment (Formula No. 117 for Metals)
                             (Metric)

                                 MIL-A-22262               Abrasive
                             Blasting Media Ship Hull Blast Cleaning

                                 MIL-C-5541          Chemical Conversion
                             Coatings on Aluminum Alloys

                                 MIL-T-81772               Thinner,
                             Aircraft Coating

2.1.2  Standards.

        John F. Kennedy Space Center (KSC), NASA

                                 KSC-STD-SF-0004     Safety Standard for
                             Ground Piping Systems Color Coding and
                             Identification

        Federal

                                 FED-STD-595               Colors Used in
                             Government Procurement

2.1.3  Publications.

        John F. Kennedy Space Center (KSC), NASA

                                 KMI 8800.6          KSC Environmental
                             Control

                                 KHB 1710.2          KSC Safety Practices
                             Handbook
                             Volumes I and II

                                 KHB 8800.6          Environmental Control
                             Handbook

                                 KHB 8800.7          Hazardous Waste
                             Management

                                 KSC-TM-584          Corrosion Control and
                             Treatment
                             Manual

        Military

                                 T.O. 1-1-691              Aircraft
                             Weapons Systems Cleaning and Corrosion
                             Control

(Copies of specifications, standards, drawings, and publications required
by suppliers in connection with specific procurement functions should be
obtained from the procuring activity or as directed by the Contracting
Officer.)

2.2  Non-Governmental.

     American Society for Testing and Materials (ASTM)

                         ASTM A123                Specification for Zinc
                         (Hot-Dip Galvanized) Coatings on Iron and Steel
                         Products

                         ASTM A153                Specification for Zinc
                         Coating (Hot-Dip) on Iron and Steel Hardware

                         ASTM A525                Specification for General
                         Requirements for Steel Sheet Zinc-Coated
                         (Galvanized) by the Hot-Dip Process

                         ASTM A780                Practice for Repair of
                         Damaged Hot-Dip Galvanized Coatings

                             ASTM D520           Standard Specification
                             for Zinc Dust Pigment

                         ASTM D610                Method for Evaluating
                         Degree of Rusting on Painted Steel Surfaces

                             ASTM D714           Method for Evaluating
                             Degree of Blistering of Paints

                         ASTM D1654               Method for Evaluation of
                         Painted or Coated Specimens Subjected to Corrosive
                         Environments

                         ASTM D4752               Test Method for Measuring
                         MEK Resistance of Ethyl Silicate (Inorganic) Zinc-
                         Rich Primers by Solvent Rub

(Application for copies should be addressed to the American Society for
Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)

     Compressed Gas Association, Inc.

                             G-7                           Commodity
                             Specification for Air, Third Edition

(Application for copies should be addressed to the Compressed Gas
Association, Inc., Crystal Gateway 1, Suite 501, 1235 Jefferson Davis
Highway, Arlington, VA 22202).

     National Association of Corrosion Engineers (NACE)

                             RP0188-88               Discontinuity
                             (Holiday) Testing of Protective Coatings

                             RP0288-88               Inspection of Linings
                             on Steel and Concrete

                         TM 01-70                 Visual Standard for
                         Surfaces of New Steel Airblast Cleaned With Sand
                         Abrasive

                         TM 01-75                 Visual Standard for
                         Surfaces of New Steel Centrifugally Blast Cleaned
                         With Steel Grit and Shot

(Application for copies should be addressed to the National Association of
Corrosion Engineers, P.O. Box 218340, Houston, TX 77218-8340.)

     Steel Structures Painting Council (SSPC)

                             SSPC AB1                Mineral and Slag
                             Abrasives

                         SSPC PA 2-82             Measurement of Dry Paint
                         Thickness With Magnetic Gages

                             SSPC SP 1-82            Solvent Cleaning

                             SSPC SP 2-89            Hand Tool Cleaning

                             SSPC SP 3-89            Power Tool Cleaning

                             SSPC SP 5-89            White Metal Blast
                             Cleaning

                             SSPC SP 10-89       Near-White Blast Cleaning

                             SSPC SP 11-89       Power Tool Cleaning to
                             Bare Metal

                         SSPC VIS 1-89       Guide to SSPC VIS 1-89 Visual
                         Standard for Abrasive Blast Cleaned Steel

(Application for copies should be addressed to the Steel Structures
Painting Council, 4400 Fifth Avenue, Pittsburgh, PA 15213.)

3.  REQUIREMENTS

3.1  Materials.

3.1.1  Abrasive Blasting Aggregate. - Blasting aggregates shall be approved
materials in accordance with MIL-A-22262 or SSPC AB1, Type I or II, Class
A, or steel grit.  The grade selected must produce the required surface
profile and possess physical properties that are compatible with the
requirements of this standard.  The steel grit shall be neutral, rust and
oil free, dry, commercial-grade blasting grit with a hardness of 40 to 50
Rockwell C.  The size shall be selected to produce the required anchor
profile.

               NOTE

Only aggregates that are free of
crystalline silica shall be
selected for use at KSC.
Exemptions to this policy shall be
coordinated with MD-MED, Biomedical
Operations and Research Office,
Medical and Environmental Health
Office.

               NOTE

Blasting aggregate for abrasion-
sensitive hardware such as bellows,
gimbal joints, and other thin-
walled components, shall be walnut
shell or approved equivalent.

3.1.2  Protective Coatings,
Thinners, and Cleaners. - The
following paragraphs establish
minimum requirements for each
generic type of protective coating
specified in this document.  See
3.4.3.1 for coating intercoat
compatibility requirements.  All
coatings must possess physical
properties and handling
characteristics that are compatible
with the application requirements
of this standard, and all coatings
must be self-curing.  Thinners and
cleaners for each coating, except
those specified in 3.1.2.6, shall
be procured from the manufacturer
of the coating.

Procurement awards for coatings to
be supplied according to this
standard shall be made only for
those products that have been
tested, evaluated, and approved.
The attention of suppliers is
called to this requirement, and
manufacturers are urged to arrange
for testing of their product so
that they may be eligible for award
of contracts or orders for coatings
to be supplied in accordance with
this standard.  To arrange for
product testing and testing
criteria, manufacturers must
contact DM-MSL, Mechanical
Engineering, Materials Science
Laboratory, NASA, John F. Kennedy
Space Center, FL 32899.

3.1.2.1  Inorganic Zinc Coatings. -
Inorganic zinc coatings are listed
in appendix A.  A coating must meet
the following minimum requirements
to be listed.

        a. Self-curing, two
        package.

        b. Dry-temperature
        resistance to 400 degrees
        Celsius (750 degrees
        Fahrenheit) for 24 hours.

        c. Minimum shelf life of
        12 months.

        d. Minimum of 83-percent
        zinc by weight in the
        applied dry film.

        e. Asbestos free, lead
        free, cadmium free, and
        chromate free.

        f. Zinc dust pigment shall
        be Type II in accordance
        with ASTM D520.

        g. Attain a numerical
        rating of not less than 9
        in accordance with ASTM
        D610 and ASTM D1654 and 9F
        in accordance with ASTM
        D714 when applied to
        composite test panels and
        exposed at the KSC beach
        corrosion test site.  The
        coatings will be evaluated
        for initial acceptance
        following an exposure
        period of 18 months.  The
        coatings must continue to
        provide acceptable
        protection and performance
        for a period of 5 years.
        Application
        characteristics must be
        judged acceptable prior to
        beach testing.

3.1.2.2  Primer and/or Intermediate
Coatings.

3.1.2.2.1  Inhibitive Polyamide
Epoxy Coatings. - Polyamide epoxy
coatings shall conform to the
following minimum requirements:

        a. Polyamide-cured

        b. Rust-inhibitive

        c. Lead free, cadmium
        free, and chromate free

        d. Suitable as a primer
        for carbon steel,
        galvanized steel, and
        aluminum

        e. Suitable as an
        intermediate coat between
        an inorganic zinc primer
        and an aliphatic
        polyurethane finish coat

        f. Meet the compatibility
        requirements of 3.4.3.1

        g. Minimum 40-percent
        volume solids

3.1.2.2.2  Noninhibitive Polyamide
Epoxy Coatings. - Polyamide epoxy
coatings shall conform to the
following minimum requirements:

        a. Polyamide-cured

        b. Lead free, cadmium
        free, and chromate free

        c. Suitable as an
        intermediate coat between
        inorganic zinc primer and
        an aliphatic polyurethane
        finish coat

        d. Meet the compatibility
        requirements of 3.4.3.1

        e. Minimum 40-percent
        volume solids

        f. Not to be used as a
        primer on steel

3.1.2.2.3  Water-Reducible
Intermediate Coatings. - Water-
reducible intermediate coatings
shall conform to the following
minimum requirements:

        a. Self-curing, one or two
        package, water reducible

        b. Lead free, cadmium
        free, and chromate free

        c. Suitable as an
        intermediate coat between
        inorganic zinc primers and
        water-reducible topcoats

        d. Meet the compatibility
        requirements of 3.4.3.1

        e. Minimum 30-percent
        volume solids

        f. Not to be used as a
        primer on steel

3.1.2.3  Finish Coatings.

3.1.2.3.1  Aliphatic Polyurethane
Coatings. - Aliphatic polyurethane
coatings shall conform to the
following minimum requirements:

        a. Catalyst isocyanate
        cured

        b. High-gloss finish

        c. Gloss and color
        retentive upon prolonged
        exterior exposure

        d. Suitable as an exterior
        finish coat over an
        inorganic zinc primer with
        a polyamide epoxy
        intermediate coat

        e. Meet the compatibility
        requirements of 3.4.3.1

        f. Minimum 44-percent
        volume solids

        g. Lead free, cadmium
        free, and chromate free

3.1.2.3.2  Water-Reducible
Topcoats. - Water-reducible
topcoats shall conform to the
following minimum requirements:

        a. Self-curing, one or two
        package, water reducible

        b. Lead free, cadmium
        free, and chromate free

        c. Gloss and color
        retentive upon prolonged
        exterior exposure

        d. Semi-gloss or high-
        gloss finish

        e. Meet the compatibility
        requirements of 3.4.3.1

3.1.2.3.3  Inorganic Topcoats. -
Inorganic topcoats shall conform to
the following minimum requirements:

        a. Dry-temperature
        resistance to 400 degrees
        Celsius (750 degrees
        Fahrenheit)

        b. Suitable as a topcoat
        for inorganic zinc and
        galvanized steel in high-
        temperature environments

        c. Ameron 741 or equal

        d. May be used over the
        other manufacturer's
        inorganic zinc primers

        e. Lead free, cadmium
        free, and chromate free

3.1.2.4  Epoxy Mastic Coatings. -
Epoxy mastic coatings shall conform
to the following minimum
requirements:

        a. Specifically intended
        for use over mechanically
        cleaned steel

        b. Minimum 80-percent
        volume solids

        c. Two-component, catalyst
        cured

        d. Lead free, cadmium
        free, and chromate free

3.1.2.5  Coal Tar Epoxy. - Coal tar
epoxy coating shall be a two-
component, high-build tar epoxy.
The coal tar epoxy shall have
minimum volume solids of 65 percent
and shall produce a one coat
thickness of 585 to 710 micrometers
(23 to 28 mils) wet coat or 405 to
510 micrometers (16 to 20 mils) per
coat dry film thickness (DFT).
Examples of coal tar epoxies which
currently meet these requirements
include the following:

        a. Sherwin Williams Hi-Mil
        Sher-Tar

        b. Porter International
        Tarset Maxi-Build II,
        #7080

        c. Devoe Devtar 247

3.1.2.6  Potable Water Epoxy. - All
coatings for potable water
immersion service shall be three-
coat epoxy systems that are
certified by the National
Sanitation Foundation (NSF),
Standard 61.  Some NSF approved
products include:

        a. Ameron, Inc., Amercoat
        395

        b. Devoe Coatings Co., Bar
        Rust 233

        c. Porter International,
        Magna-Line

        d. Sherwin Williams Co.,
        Potable Water Epoxy.

3.1.2.7  Nitrile Rubber/Aluminum
Coating. - A nitrile-rubber-base,
aluminum- pigmented coating may be
obtained from KSC Supply under
Federal stock number 8030-00-485-
3656.  This material should be
Government-furnished equipment
(GFE) to the Contractor under the
terms of the contract.  Thinner for
this coating shall be MIL-T-81772
and shall be used in accordance
with 3.4.3.4.  This material may be
applied by brush or spray.

3.1.2.8  Nonskid Coating. - The
nonskid coating shall be DOD-C-
24667, Type 1B, Composition G,
Grade A, Class 1, as supplied by
American Abrasive Metals, Inc., 460
Coit Street, Irvington, NJ 07111,
telephone (201) 373-7060, or
approved equal (Primer Pripoxo 5-C,
Topcoat Epoxo 400G).

3.1.3  Sealants/Caulking. -
Sealants shall be self-curing,
single-component, polysulfide-
rubber or polyurethane conforming
to TT-S-230, Type II, Class A.  If
not topcoated, the caulking shall
match the color of the joint
surface being caulked.  If caulking
is to be used in a cleanroom
environment, an approved low off-
gassing material should be
selected.

3.1.4  Wash Primer. - Wash primer
specified for use with this
document shall comply with DOD-P-
15328.

3.2  Equipment.

3.2.1  Compressed Air. - The
compressed air system shall be
capable of delivering a continuous
nozzle pressure to achieve the
required surface cleanliness and
profile, typically 620 kilopascals
(kPa) [90 pounds per square inch
(psi)] minimum to each blast nozzle
in operation.  The required air
capacity will depend upon the
configuration of the abrasive
system used.  The air system should
comply with the instructions and
recommendations of the manufacturer
of the abrasive blasting system.
The compressed air system shall be
equipped with oil and moisture
separators to ensure only clean,
dry air is provided to the service
outlet.

3.2.2  Abrasive Blasting System. -
The abrasive blasting system shall
comply with Occupational Safety and
Health Act (OSHA), American
National Standards Institute
(ANSI), and National Institute of
Occupational Safety and Health
(NIOSH) configurations consisting
of, but not limited to, a remote-
controlled welded pressure pot
conforming to American Society of
Mechanical Engineers Standards, the
required length of blast hose, a
venturi nozzle, a respiratory air-
line filter, and a blast hood
approved by the Mine Safety and
Health Administration/NIOSH with
the required length of air hose.
The blasting system shall be
designed to produce the specified
cleanliness and profile when
coupled with the available
compressed air supply.

3.2.3  Coating Application System.
- The coating application equipment
shall be an airless spray system,
conventional spray system, or other
approved equipment in accordance
with the coating manufacturer's
recommendations and 3.4.3.6.

3.2.4  Breathing Air. - Compressed
breathing air supplied to
respiratory protection devices
shall meet the requirements of the
specification for Grade D breathing
air as described in Compressed Gas
Association, Inc., specification G-
7.  Compressors for breathing air
shall be constructed and located so
as to avoid entry of contaminated
air into the air supply system.
Oil-lubricated compressors shall be
equipped with a suitable in-line
air filtration system that includes
a carbon monoxide sensor and alarm
and air-purifying sorbent beds and
filters that remove water, dust
particles, odors, oil, and other
hydrocarbons.  Oil-free breathing
air compressors do not require
carbon monoxide monitoring or air
filtration systems.  MD-MED will be
notified of all compressors brought
on KSC for breathing air supply to
coordinate breathing air system
inspection.  Breathing air
couplings shall not be compatible
with outlets for nonrespirable shop
air or other gas systems to prevent
inadvertent servicing of air-line
respirators with nonrespirable
gases or oxygen.  The maximum air-
line length for any approved
supplied air respirator shall not
exceed 100 meters (330 feet)
measured from the pressure reducing
valve.  Air lines shall be
protected from damage, including
cutting, kinking, crushing, or
burning.  Notification will include
written certification that the
breathing air supplied by the
compressors has been tested and the
air meets the specification for
grade D breathing air.

3.3  Safety Requirements. -
Necessary precautions, in
accordance with OSHA regulations,
manufacturers' recommendations, and
KHB 1710.2, shall be taken to
ensure the safety of personnel
performing the work required by
this document and personnel who may
be affected by such work.  Some of
the materials handled in accordance
with this document are combustible,
or toxic, or both.  The Contractor
shall be responsible for providing
equipment as required for safe
application and for instructing the
users regarding the hazards and
proper handling and disposal
procedures to prevent damage to
health.  The Contractor shall
provide safe access to all areas
for the coating inspector.  The
Contractor shall submit a written
safety plan that includes a Hazard
Communication Program, a
Respiratory Protection Program, and
a Hearing Conservation Program that
conforms to OSHA requirements.
Where the Contractor is required to
perform removal of surface coatings
that contain lead, chromium,
mercury, or cadmium, the safety
plan shall also include specific
provisions for OSHA compliance for
work with these materials.

3.3.1  Environmental Requirements.
- The operations described in this
standard have the potential to
pollute the environment.  All
local, state, and Federal
environmental regulations, as well
as KSC environmental policies,
shall be followed.  Questions
regarding these regulations and
policies should be directed to DE-
EMO, Engineering Development
Directorate, Environmental
Management Office.  Refer to KMI
8800.6 and KHB 8800.6 for
environmental requirements and
policies.  Material waste shall be
handled and disposed in accordance
with KHB 8800.7.

3.3.2  Personal Protective
Equipment (PPE). - When engineering
controls are not available to
protect workers, then PPE and/or
administrative controls shall be
used.  Where required, PPE shall be
provided, used, and maintained in a
reliable and sanitary condition.
Both the supervisors and the
workers shall be properly
instructed in the selection, use,
and maintenance of PPE.

3.4  General Requirements.

3.4.1  Applicator Qualifications. -
To ensure the highest quality of
workmanship, only journeyman
applicators having extensive prior
experience in abrasive blasting and
the application of high-performance
protective coatings shall be
assigned to perform the work
described herein.  The Contractor
shall be responsible for providing
all painting personnel an
orientation on the proper mixing
and application of the coatings
specified, particularly inorganic
zinc coatings.  Topics in the
orientation shall include
specification requirements,
material application
characteristics, and inspection
criteria.  Only personnel receiving
training may mix or apply coatings.
The Contractor shall prepare
representative sample areas which
meet specification requirements.

3.4.2  Preparation of Surfaces. -
All surfaces to be coated shall be
clean, dry, and free from oil,
grease, dirt, dust, corrosion,
peeling paint, weld spatter, and
any other surface contaminants.
All surfaces that will become
inaccessible after fabrication,
erection, or installation shall be
prepared and coated while
accessible.  Surface preparation
and coating operations shall be
sequenced so that freshly applied
coatings will not be contaminated
by dust or foreign matter.  All
equipment and adjacent surfaces not
to be coated shall be protected
from surface preparation
operations.  Working mechanisms
shall be protected against
intrusion of abrasive.  All
surfaces shall be degreased, as
required, prior to subsequent
surface preparation procedures or
the application of protective
coatings, or both.  The following
surface preparation techniques
shall be used when specified in
3.5.

3.4.2.1  Cleaning and Degreasing. -
Degreasing shall be by solvent
cleaning, detergent washing, or
steam cleaning in accordance with
SSPC SP-1.  This procedure will be
followed when cleaning steel or
stainless steel.  NASA policy
mandates the phaseout of the use of
chlorofluorocarbon solvents by the
year 1995.  Selection of solvents
shall be coordinated with SI-PMS,
Center Support Operations,
Propellants Consumables Management
Staff.  Water washing shall be done
when high levels of chloride or
other undesirable contaminants are
found on the surfaces and shall be
accomplished using standard
industrial pressure cleaners with a
pressure versus volume output
balance that will ensure thorough
and productive cleaning.  High-
pressure water cleaning shall not
be used as a cleaning method if
existing paint film on a surface
exceeds any Toxicity Characteristic
Leaching Procedure (TCLP) listed
toxic characteristics.  No chemical
shall be added to the water used
for the paint blasting/
removal operation, and no discharge
shall be directed to surface
waters.  A 40-micrometer filter
mesh shall be utilized to screen
wastewater discharge on operations
performed over pervious surfaces.
Points of discharge shall be
identified prior to water blasting
operations performed over
impervious surfaces.  All
discharges shall then be channeled
to pervious areas with a
combination of sandbags and a 40-
micrometer filter mesh.  Any
residues generated in water
blasting operations shall be
disposed of in accordance with KHB
8800.7.  All records of water
blasting operations shall be
submitted to DE-EMO.  The cleaned
surface shall be free of loose
coatings, chlorides, dirt, dust,
mildew, grinding/welding/cutting
debris, and visible contaminants.
The surface shall be clean and dry
prior to the abrasive blasting
operations and application of
coatings.

3.4.2.2  Abrasive Blasting. - The
abrasive blasting aggregate shall
be clean and dry and shall conform
to 3.1.1.  Abrasive blasting shall
be in accordance with the
applicable paragraphs in 3.5.
Abrasive residue shall be removed
from the surface, leaving it clean
and dry prior to the application of
coatings.  All abrasive blasting
operations shall be contained for
particulate emissions during work.
The containment system shall be
designed to comply with all
applicable Federal, state, and
local regulations as well as all
KSC policies.  Exemptions to this
requirement shall be coordinated
with DE-EMO.

Care shall be taken in the
identification and selection of
aggregate for preparation of
abrasive-sensitive hardware such as
bellows, gimbal joints, and other
thin-walled components.

3.4.2.3  Mechanical Cleaning
Methods. - Mechanical methods shall
be in accordance with the
applicable paragraph in 3.5.

3.4.3  Application of Coatings. -
All prepared surfaces shall be
coated within 6 hours after
completion of surface preparation
and before rusting or
recontamination occurs.  Any
surface not coated within 6 hours
or that shows rusting or
contamination, regardless of the
length of time after preparation,
shall be re-prepared.  The
application and handling
characteristics of all coatings
will vary.  To obtain optimum
performance, adequate instructions
from the manufacturer are essential
and must be closely followed in
conjunction with the requirements
defined herein.  The manufacturer's
recommendations for thinning,
mixing, handling, and applying his
product shall be strictly followed.
All coatings shall be thoroughly
worked into all joints, crevices,
and open spaces.  All newly coated
surfaces shall be protected from
damage.  All equipment and adjacent
surfaces not to be coated shall be
protected from overspray and
splattered coatings.  All spray
painting operations shall be
contained for particulate emissions
during work.  The containment
system shall be designed to comply
with all Federal, state, and local
regulations as well as all KSC
policies.  Exemptions to this
requirement shall be coordinated
with DE-EMO.

3.4.3.1  Coating Systems. - Coating
systems for specified uses and
substrates shall be as defined in
3.5 and shall conform to 3.1.2.
All thinners and cleaners shall be
products of the coating
manufacturer except as defined in
3.1.2.7.  To ensure intercoat
compatibility, coating systems
consisting of more than one coat
shall be products of the same
manufacturer, except for inorganic
topcoat as referenced in 3.1.2.3.3.
Continuity of the coating
manufacturer's system shall be
maintained for the duration of an
individual project.

3.4.3.2  Colors. - Inorganic zinc
coatings shall be pigmented so that
there is a definite contrast
between the coating and the dull
gray appearance of the blasted
steel surface during the coating
application.  Color coding for
fluid system piping shall be in
accordance with KSC-STD-SF-0004.
Finish coat colors shall be in
accordance with the following FED-
STD-595 color numbers using
pigments free of lead, chromium,
and cadmium:

        a. White, no. 17875

     b. Blue, no. 15102 (safety)

     c. Yellow, no. 13538
(standard)

     d. Yellow, no. 13655 (safety)

     e. Red, no. 11136

     f. Red, no. 11105 (safety)

     g. Black, no. 17038

     h. Green, no. 14110 (safety)

     i. Gray, no. 16187 (safety)

     j. Brown, no. 10080 (safety)

     k. Gray, no. 16473 (standard)

3.4.3.3  Storage of Coating
Materials. - Coating materials and
thinners shall be stored in their
original containers bearing the
manufacturer's name, product
identification, shelf life, and
batch number.  Coatings, thinners,
and cleaners shall be stored in
tightly closed containers in a
covered, well-ventilated area where
they will not be exposed to sparks,
flame, direct sunlight, high heat,
or rainfall.  The manufacturer's
instructions for storage
limitations shall be followed.
Tarpaulins shall not be utilized as
a sole means of covering coating
materials for storage.  If Material
Safety Data Sheets are included
with coating materials or thinners,
they must be maintained in the
area.  The Contractor shall submit
a plan for storage of coating
materials for coordination with RT-
SAF, Safety and Reliability, Safety
Operations Division.

3.4.3.4  Mixing and Application
Instructions. - Coating materials
shall be thoroughly mixed prior to
application with a mechanical
mixing instrument that will not
induce air into the coating, such
as a Jiffy Mixer, manufactured by
the Jiffy Mixer Company, Inc., San
Francisco, CA, or approved equal.
The mixer shall be powered by an
air motor or an explosionproof
electric motor.   All mixing
operations shall be performed over
an impervious surface with
provisions to prevent runoff to
grade of any spilled material.  The
mixed coating material shall be
strained through a 30- to 60-mesh
screen prior to application.
Thinning shall be for viscosity
control only.  The manufacturer's
recommended thinner and amount
shall be used except as defined in
3.1.2.6.  (The nitrile-
rubber/aluminum coating can be
reduced approximately 50 percent
with MIL-T-81772 for spray
applications.)  The material shall
be agitated as required during
application to maintain uniform
suspension of solids.  Continuous
rapid agitation shall be avoided.
Spray equipment shall be adjusted
to produce an even, wet coat with
minimum overspray.  The
conventional pressure pot, when
used, shall be kept at
approximately the same level or
above the spray gun for proper
material delivery.  Coatings shall
be applied in even, parallel
passes, overlapping 50 percent.
3.4.3.5  Weather Conditions. - No
coating shall be applied when
contamination from rainfall is
imminent or when the temperature or
humidity is outside limits
recommended by the coating
manufacturer.  To prevent moisture
condensation during application,
surface temperature must be at
least 3  degrees Celsius (5 degrees
Fahrenheit) above the dewpoint.
Wind speed shall not exceed 25
kilometers per hour (15 miles per
hour) in the immediate coating
area.

3.4.3.6  Methods of Application. -
Coatings shall be applied with
airless or conventional spray
equipment, or both, according to
3.2.3.  Application with brushes
shall be permitted for minor
touchup and when spray application
is prohibited in the area of work.

3.4.3.7  Coating Finish. - Each
coat of material applied shall be
free of runs, sags, blisters,
bubbles, and mudcracking;
variations in color, gloss, and
texture; holidays (missed areas);
excessive film buildup; foreign
contaminants; dry overspray; etc.
Special care shall be taken to
ensure complete coverage and proper
thickness on welds, corners,
crevices, sharp edges, bolts, nuts,
and rivets.  Each coat of applied
material shall be rendered clean,
dry, and free from surface
contaminants prior to the
application of the next successive
coating.

3.4.3.8  Touchup of Welds and
Damaged Coatings. - Field welds and
damaged coatings shall be touched
up in accordance with 3.5.7.  The
coating shall be applied in
accordance with 3.4.3.4 and
3.4.3.6.  Touchup and repair shall
be accomplished promptly after the
damage or welding has occurred.

3.4.3.9  Coating, Drying, and
Curing. - The coating
manufacturer's recommended drying
and curing times for handling,
recoating, and topcoating shall be
followed.  Proper curing of solvent-
based inorganic zinc-rich coatings
must be verified by ASTM D4752
prior to further coating.  Water-
based inorganic zinc-rich coatings
must be verified for curing, in
accordance with the same procedure,
but water must be substituted as
the solvent.

3.4.4  Sealing/Caulking. - The
perimeter of all faying surfaces,
joints open less than 13
millimeters (1/2 inch), and skip-
welded joints shall be completely
sealed.  The sealant shall be a
self-curing, single-component,
polysulfide rubber or polyurethane
type, conforming to 3.1.3.  The
sealant shall be applied to the
joint with a caulking gun following
the application of the inorganic
zinc primer on carbon steel.  For
topcoated zinc primers, apply
caulking after epoxy intermediate
coat, and for coatings on stainless
steel, galvanized steel, and
aluminum, apply caulking before
application of the topcoat.  The
bead shall have a smooth and
uniform finish and shall be cured
(tacky to touch) prior to topcoat
application.

3.5  Specific Requirements.

3.5.1  Protection of Carbon Steel.
- Carbon steel surfaces shall be
protected from atmospheric
corrosion through the application
of zinc coatings (inorganic zinc
coating and/or hot-dip galvanizing)
as defined herein.  New steel
components, such as stair treads,
grating, handrails, pipes, and
hardware (nuts, bolts, and
fasteners), shall be hot-dip
galvanized in accordance with
3.5.1.2.1, as applicable.  All
other carbon steel surfaces that
are exposed to the atmosphere shall
be coated with inorganic zinc
conforming to 3.1.2 in accordance
with 3.4.3 or hot-dip galvanized
(zinc coated) in accordance with
3.5.1.2.1.  The zinc coatings may
require topcoating with additional
protective coatings as specified,
but in neutral atmospheres, testing
has proven untopcoated zinc to have
superior performance.  Carbon steel
faying surfaces that are a part of
all friction-type joints shall be
abrasive blasted and coated with
100 to 150 micrometers (4 to 6
mils) of inorganic zinc only, in
accordance with 3.5.1.1.4, prior to
installation.  The recommended
coating application sequence for
carbon steel shall be to abrasive
blast and prime with inorganic zinc
prior to installation or erection.
Further topcoating, if required,
shall be accomplished after all
welding, grinding, or drilling has
been completed, and areas damaged
by these procedures have been
properly repaired with inorganic
zinc.

3.5.1.1  Protection With Inorganic
Zinc.

3.5.1.1.1  Mechanical Cleaning of
Carbon Steel. - After cleaning and
degreasing in accordance with SSPC
SP-1, mechanical cleaning of carbon
steel shall be used only as a
preabrasive blasting preparation
method.  Carbon steel shall be
mechanically cleaned using needle
scalers and/or abrasive discs or
wheels in accordance with SSPC SP-2
or SSPC SP-3.  All weld slag, weld
spatter, and foreign matter shall
be removed from welds prior to
abrasive blasting.

3.5.1.1.2  Abrasive Blasting of
Carbon Steel. - Carbon steel shall
be abrasive blasted to near-white
metal (NACE no. 2 in accordance
with NACE STD TM-01-70, NACE STD TM
01-75, or SSPC SP-10) with
aggregate conforming to the
requirements in 3.1.1.  The anchor
profile of the blasted surface
shall be 40 to 75 micrometers (1.5
to 3.0 mils).  All rust shall be
completely removed from pits and
depressions.

3.5.1.1.3  Stripe Coat Application.
- Brush coating and/or stripe
coating with a primer shall be
applied to welds, cutouts, sharp
edges, rivets, crevices, and bolts
to ensure complete coverage and
proper thickness prior to final
primer applications.

3.5.1.1.4  Application of Inorganic
Zinc Coatings. - Inorganic zinc
coatings shall be applied to a DFT
of 100 micrometers (4.0 mils)
minimum to 150 micrometers (6.0
mils) maximum when they will be
left untopcoated or when inorganic
topcoat is applied.  When the zinc
coatings are to be topcoated with
organic topcoats, the DFT shall be
reduced to 65 micrometers (2.5
mils) minimum to 100 micrometers
(4.0 mils) maximum.  The proper DFT
for the inorganic zinc coating
shall be obtained in a single
application, which may consist of
multiple passes, while coating is
still wet.

3.5.1.1.5  Topcoat Systems for Zinc
Coatings. - The following topcoat
systems shall be applied over the
zinc coatings as required for each
zone of exposure described in 1.1.
Topcoats shall be applied to the
DFT recommended by the
manufacturer.  The film thickness
of the topcoats shall be sufficient
to ensure uniform coverage and
color.

        a. Zone 1. - Zinc coatings
        shall be left untopcoated.
        As an alternate, surfaces
        may be topcoated with
        silicone ablative compound
        in accordance with
        KSC-SPEC-F-0006.
        b. Zone 2. - An inorganic
        topcoat conforming to
        3.1.2.3.3 shall be applied
        in accordance with 3.4.3.
        As an alternate, surfaces
        may be topcoated with
        silicone ablative compound
        in accordance with
        KSC-SPEC-F-0006.

        c. Zone 3. - An
        intermediate/tie coat and
        a finish coat conforming
        to 3.1.2 shall be applied
        in accordance with 3.4.3.

        d. Zone 4. - No topcoats
        are required, except for
        color coding, safety,
        identification, or special
        conditions.  When
        required, topcoats shall
        be in accordance with
        3.5.1.1.5.c.

        e. Zone 5. - Zinc primer
        is suggested but not
        required.  As an
        alternate, use inhibitive
        epoxy primer and a
        polyurethane finish coat
        conforming to 3.1.2 at the
        manufacturer's recommended
        thickness.

3.5.1.2  Protection by Galvanizing.

3.5.1.2.1  Galvanizing. -
Galvanizing (zinc coating) shall be
accomplished after fabrication by
the hot-dip process conforming to
ASTM A123, ASTM A153, and ASTM
A525.  Galvanizing weight for steel
sheet without further coating
protection shall be ASTM A525,
G165.  All lower galvanizing
weights for steel sheet must be
further protected with coatings
except for Zone 5 exposures.

3.5.1.2.2  Surface Preparation of
Galvanizing.

               CAUTION

Some galvanized configurations are
susceptible to distortion when they
are abrasive blasted.  Special care
shall be taken to ensure against
any metal distortion by reducing
blast nozzle pressure and
increasing the working distance
from nozzle to surface.  In some
cases, such as in the surface
preparation of light-gage sheet,
these precautions may not be
sufficient to prevent distortion;
and alternate procedures, such as
abrading or mechanical cleaning,
must be used to remove corrosion or
roughen the surface.  Galvanized
surfaces shall be abrasive blasted
with fine abrasives conforming to
the requirements in 3.1.1 to remove
corrosion and old coatings or
roughen new surfaces.  The blasted
surface shall be free of all
corrosion and foreign matter and
have a uniform, slightly roughened
appearance.

               NOTE

High-strength steels are
susceptible to embrittlement by
hydrogen during the galvanizing
process.  Steel components with an
ultimate tensile strength above 900
megapascals (MPa) [130 kips per
square inch (ksi)] or hardness
above Rockwell C Hardness 28 shall
not be galvanized.

Galvanized surfaces to be further
topcoated shall be prepared by
degreasing in accordance with
3.4.2.1 prior to any additional
surface preparation.  After
degreasing, abrasive blasting or
mechanical cleaning shall be
performed as required by the zone
of exposure.  If galvanized steel
is prepared for the application of
coatings by abrasive blasting, it
shall be lightly brush blasted with
fine abrasive at a lower pressure
of 275 to 420 kPa (40 to 60 psi) to
provide a corrosion-free and
uniform, slightly roughened
surface.  Care shall be taken not
to completely remove the galvanized
finish.  The zinc coatings shall be
maintained or rendered clean, dry,
and free from contaminants prior to
the application of topcoat systems.
Field repair of damaged galvanizing
shall be accomplished in accordance
with ASTM A780 using inorganic zinc
coatings.

Galvanized steel that is to be
mechanically cleaned shall be
cleaned in accordance with SSPC SP-
3 using abrasive discs/sheets, or
other approved methods.  All
corrosion and foreign matter shall
be completely removed and the
entire surface slightly roughened.

3.5.1.2.3  Coating Systems for
Galvanizing.

        a. Zone 1. - Galvanizing
        may be left untopcoated.
        As an alternate, surfaces
        may be topcoated with
        silicone ablative compound
        in accordance with
        KSC-SPEC-F-0006.

        b. Zone 2. - After brush
        blasting, an inorganic
        topcoat conforming to
        3.1.2.3.3 shall be applied
        at a DFT of 75 to 125
        micrometers (3 to 5 mils).
        As an alternate, surfaces
        may be topcoated with
        silicone ablative compound
        in accordance with
        KSC-SPEC-F-0006.

        c. Zone 3. - After brush
        blasting, primer/tiecoat
        and finish coat shall be
        applied in accordance with
        manufacturer's recommended
        thicknesses.  As an
        alternate to brush
        blasting, wash primer
        shall be applied to a DFT
        of 10 to 15 micrometers
        (0.4 to 0.6 mil).  Within
        8 hours, an
        intermediate/tie coat at a
        DFT of 40 to 75
        micrometers (1.5 to 3
        mils) and a finish coat
        conforming to 3.1.2 at a
        DFT of 75 to 125
        micrometers (3 to 5 mils)
        shall be applied.

        d. Zone 4. - No topcoats
        are required for
        galvanizing weights
        meeting or exceeding ASTM
        A123, A153, and A525 G165.
        When steel sheet is
        galvanized less than ASTM
        A525 G165, further coating
        in accordance with Zone 3
        is required.  As an
        alternate to topcoats,
        steel sheet shall be
        degreased, brush blasted,
        and an inorganic zinc
        primer conforming to
        3.1.2.1 applied to a DFT
        of 50 to 75 micrometers (2
        to 3 mils).

        e. Zone 5. - No topcoats
        are required, except for
        color coding, safety,
        identification, or special
        conditions.  When topcoats
        are required, the surface
        shall be degreased and a
        wash primer applied to a
        DFT of 10 to 15
        micrometers (0.4 to 0.6
        mil).  Within 8 hours, a
        polyurethane finish coat
        conforming to 3.1.2 shall
        be applied to a DFT of 40
        to 75 micrometers (1.5 to
        3 mils).

3.5.2  Protection of Aluminum.

3.5.2.1  Surface Preparation of
Aluminum.

                    CAUTION

Some aluminum configurations are
susceptible to distortion and/or
destruction when they are abrasive
blasted.  Special care shall be
taken to ensure against any metal
damage by choice of abrasive
aggregate and by reducing blast
nozzle pressure and increasing the
working distance from nozzle to
surface as necessary.  In some
cases, such as in the surface
preparation of light-gage sheet,
these precautions may not be
sufficient to prevent distortion,
and an alternate procedure, such as
abrading or mechanical cleaning,
must be used to remove corrosion or
roughen the surface.  Aluminum
surfaces shall be abrasive blasted
with fine abrasive conforming to
the requirements in 3.1.1 to remove
corrosion and old coatings or
roughen new surfaces.  The blasted
surface shall be free of all
corrosion and foreign matter and
have a uniform, slightly roughened
appearance.

Aluminum shall be prepared by
degreasing and abrasive blasting or
mechanical cleaning, as required by
the condition and configuration of
the surface.  Abrasive blasting
shall be used whenever possible
using abrasives specified in 3.1.1.
Mechanical cleaning shall be used
only when abrasive blasting is
impractical, would damage the
structure or component, or is
prohibited in the area of work.
Aluminum shall be mechanically
cleaned in accordance with SSPC SP-
3 using abrasive discs/sheets, or
other approved methods.  All
corrosion and foreign matter shall
be completely removed and the
entire surface slightly roughened.
Anodized or chemical conversion
coated aluminum surfaces shall not
be mechanically cleaned.

Abrasive blasting of bellows,
gimbal joints, and other thin-
walled, abrasion-sensitive
components shall be blasted with
walnut shells or approved equiva
lent in accordance with 3.1.1.

3.5.2.2  Protective Coatings. - The
following protective coatings shall
be applied to aluminum surfaces as
required for each zone of exposure
described in 1.1.

        a. Zones 1, 2, and 3. - A
        nitrile-rubber-base,
        aluminum-pigmented coating
        conforming to 3.1.2.7
        shall be applied.  Coating
        shall have a DFT of 65
        micrometers (2.5 mils)
        minimum to 100 micrometers
        (4 mils) maximum.  To
        facilitate washdown of SRB
        residue on critical
        hardware, polymide epoxy
        coating and aliphatic
        polyurethane topcoat may
        be used as an alternate.

        b. Zones 4 and 5. - No
        protective coatings are
        required except for color
        coding, safety,
        identification, or special
        conditions for normal
        atmospheric service of
        1000, 5000, and 6000
        series alloys.  However,
        aluminum that is located
        within 3.5 kilometers (2
        miles) of the coastline or
        other series alloys shall
        be fully coated according
        to 3.5.2.2.a.  As an
        alternate to 3.5.2.2.a,
        aluminum may be degreased,
        wash primed with DOD-P-
        15328 to a DFT of 10 to 15
        micrometers (0.4 to 0.6
        mil), or conversion coated
        in accordance with MIL-C-
        5541, Class 1A, to meet
        electrical ground support
        equipment (GSE)
        requirements of KSC-E-165.
        Finish coats of epoxy
        primer to a DFT of 50 to
        75 micrometers (2 to 3
        mils) and topcoat of
        polyurethane, or
        equivalent, to a DFT of 40
        to 75 micrometers (1.5 to
        3.0 mils) shall be
        applied, as a minimum, to
        external surfaces where
        conversion coating is
        employed, such as racks
        and panels.

            NOTE

Aluminum requires special coatings
if immersion conditions could
occur.  See 3.5.4 for coatings for
immersion.

3.5.3  Protection of Stainless
Steel.

              CAUTION

          Some stainless
          steel
          configurations
          are susceptible
          to distortion
          and/or
          destruction
          when they are
          abrasive
          blasted.
          Special care
          shall be taken
          to ensure
          against any
          metal damage by
          choice of
          abrasive
          aggregate and
          by reducing
          blast nozzle
          pressure and
          increasing the
          working
          distance from
          nozzle to
          surface as
          necessary.  In
          some cases,
          such as in the
          surface
          preparation of
          light-gage
          sheet, these
          precautions may
          not be
          sufficient to
          prevent
          distortion, and
          an alternate
          procedure, such
          as abrading or
          mechanical
          cleaning, must
          be used to
          remove
          corrosion or
          roughen the
          surface.
          Stainless steel
          surfaces shall
          be abrasive
          blasted with
          fine abrasive
          conforming to
          the
          requirements in
          3.1.1 to remove
          corrosion and
          old coatings or
          roughen new
          surfaces.  The
          blasted surface
          shall be free
          of all
          corrosion and
          foreign matter
          and have a
          uniform,
          slightly
          roughened
          appearance.

3.5.3.1  Surface Preparation of
Stainless Steel. - Stainless steel
shall be prepared by degreasing in
accordance with SSPC SP-1 and
mechanical cleaning or abrasive
blasting.  Abrasive blasting shall
be used whenever possible.  Using
abrasives specified in 3.1.1,
stainless steel shall be
mechanically cleaned in accordance
with SSPC SP-3 using abrasive
discs/sanding sheets, or other
approved methods.  All corrosion
and foreign matter shall be
completely removed and the entire
surface slightly roughened.

3.5.3.2  Protective Coating.

        a. Zones 1, 2, and 3. - A
        nitrile-rubber-base,
        aluminum-pigmented coating
        conforming to 3.1.2.7
        shall be applied.  Coating
        shall have a DFT of 65
        micrometers (2.5 mils)
        minimum to 100 micrometers
        (4 mils) maximum.  To
        facilitate washdown of SRB
        residue on critical
        hardware, polyamide epoxy
        coating and aliphatic
        polyurethane topcoat may
        be used as an alternate.

        b. Zones 4 and 5. - No
        protective coatings are
        normally required for
        normal atmospheric service
        except for color coding,
        safety, identification, or
        special conditions.  As an
        alternative for special
        conditions, stainless
        steel may be brush blasted
        and coated with inhibitive
        epoxy primer to a DFT of
        50 to 75 micrometers (2 to
        3 mils) followed by an
        appropriate finish coat
        that will provide a DFT of
        50 to 75 micrometers (2 to
        3 mils).  Degreasing
        followed by a wash primer
        may be substituted for the
        epoxy primer in Zone 5.

3.5.4  Underground, Submerged, or
Continuously Wetted Surfaces. -
Surfaces that will be underground,
submerged, or continuously wetted
shall be prepared in accordance
with SSPC SP-5 with a profile of 75
to 100 micrometers (3 to 4 mils)
and coated with coal tar epoxy
conforming to 3.1.2.5.

               NOTE

Coal tar epoxy coatings shall not
be used for contact with potable
water.

The coating shall be applied to a
minimum DFT of 410 micrometers
(16.0 mils) and checked for missed
areas or pinholes with a properly
calibrated holiday detector in
accordance with NACE RP0188-88.
Cathodic protection requirements
shall be coordinated with the
application of this coating.

3.5.5  Coating Systems for Potable
Water Immersion Service. - All
surface preparation for carbon
steel shall be in accordance with
SSPC-SP-5 with a surface profile of
75 to 100 micrometers (3 to 4
mils).  All coatings for potable
water service shall be selected
from 3.1.2.6.  All potable water
coating systems shall be inspected
in accordance with NACE Standard
recommended practices RP0288-88 and
with RP0188-88.

3.5.6  Provision for Nonskid
Surfaces. - Where a nonskid walking
surface is required, a nonskid
coating conforming to 3.1.2.8 shall
be applied as follows:

        a. Carbon Steel. - Apply
        directly over the zinc
        coating (inorganic zinc or
        galvanizing).  Follow
        surface preparation
        instructions defined for
        topcoating in 3.5.1.

        b. Aluminum and Stainless
        Steel. - Apply directly
        over these surfaces after
        surface preparation
        following instructions
        defined for topcoating in
        3.5.2 and 3.5.3.

3.5.7  Repair of Applied Coatings.
- Newly applied coatings shall be
repaired in accordance with table
1.  Surfaces shall be prepared by
water washing and by mechanical
methods to SSPC SP-11 to remove
corrosion, weld slag, and to
"feather back" coating edges.
Touchup and repair shall be
accomplished promptly after the
damage has occurred.  Touchup and
repair of shop-applied coatings
shall be accomplished using
coatings from the same manufacturer
as those applied in the shop.

3.5.8  Maintenance of Existing
Coatings. - Each support contractor
responsible for maintaining
facilities or ground support
equipment should develop a Coating
Maintenance Plan.  The plan shall
include the following key elements:
record keeping, routine inspection
of facilities, coating repair
criteria, coating systems,
equipment requirements, procedures,
training and certification, in-
process inspection, and worker
protection and environmental
compliance.
    Table 1.  Repair of Applied
             Coatings
 Existing Coating                Repair Coating
Inorganic zinc      
                    
Zones* 1 and 4      Inorganic zinc/epoxy mastic for small
                    area
Zone 2                touchup
Zones 3 and 5       Inorganic zinc/inorganic topcoat
                    Epoxy mastic/polyurethane system for
                    small
                      area touchup
Galvanized steel    
                    
Zones 1 and 4       Inorganic zinc/epoxy mastic for small
                    area
Zones 2               touchup
Zones 3 and 5       Inorganic zinc/inorganic topcoat
                    Epoxy mastic/polyurethane system for
                    small
                      area touchup
Inorganic topcoat   
                    
Zone 2              Inorganic zinc/inorganic topcoat
Epoxy/Polyurethane  
**                  
                    Epoxy/polyurethane system
Zones 3, 4 and 5
Water reducible     
                    
Zones 3, 4, and 5   Water reducible intermediate/finish
AR-7                
                    
All zones           AR-7
                 
      *Zones are defined in 1.1
   **When this coating is replaced
   with inorganic zinc, complete
removal of the existing coating is
             required.
                 
 4.  QUALITY ASSURANCE PROVISIONS
                 
4.1  Responsibility for Inspection.
- The coating contractor/applicator
 shall provide continuous quality
 control inspection of his work to
ensure complete conformance to the
project specifications.  A project-
 specific quality control coating
inspection plan shall be submitted
  to the Contracting Officer for
             approval.
                 
In addition, the Government and/or
  the Government's representative
  shall provide inspection of the
  surface preparation and coating
   application processes defined
 herein as required by the project
  specifications.  The inspector
shall perform all of the in-process
   inspections required by this
     standard and the project
   specifications.  The assigned
  inspector shall be certificated
 under the National Association of
    Corrosion Engineers (NACE)
  International Coating Inspector
Training and Certification Program
  (NICITCP).  The inspector shall
  witness, inspect, and test all
 protective coating work to verify
   complete compliance with the
   specified requirements.  The
 assigned inspector shall document
 the work on the inspection forms
   described in 4.4.  The daily
    inspection reports shall be
   prepared and signed daily and
   submitted to the Contracting
  Officer on a weekly basis as a
  minimum.  When a nonconformance
  report is required, it shall be
    signed and submitted to the
   Contracting Officer within 1
 working day from the time that it
is written.  After determining that
   all nonconformances have been
 corrected and/or the coating work
is in compliance with this standard
 and the project specifications, a
  conformance verification report
shall be completed for the specific
   item, area, or project.  This
 report shall be signed and sealed
  by the assigned inspector.  The
  application of the certificated
      inspector's seal to the
  verification conformance report
 indicates that he has personally
 inspected the indicated work and
 has found it to be in compliance
 with the specified requirements.
 The seal shall not be affixed to
 the daily inspection report or to
  the nonconformance report.  The
contractor/applicator shall provide
 the inspector with safe access to
             the work.
                 
  The NICITCP is provided by NACE
     International, Education
   Department, P.O. Box 218340,
 Houston, Texas, 77218-8340, (713)
   492-0535, FAX (713) 492-8254.
                 
 4.2  Requirements for Inspection.
                 
          a. Zones 1, 2, and 3. -
       Since these zones are
       located in the highly
         corrosive launch
       environment or other
     chemical exposures, NACE
        inspection shall be
     required for all surface
      preparation and coating
        applications.  This
    includes all new work, new
        work touchup, major
     refurbishment of existing
           coatings, and
          modifications.
                 
         b. Zone 4. - For systems
        requiring abrasive
      blasting and coating of
     metallic substrates, all
      surfaces shall require
     full NACE inspection with
     the following exception:
      For touchup of existing
     coatings, NACE inspection
       is not mandatory but
      recommended in cases of
        critical systems or
            equipment.
                 
          c. Zone 5. - All clean
    room structures fabricated
       of aluminum or carbon
        steel that will be
      abrasive blast cleaned
    and/or coated outside Zone
      5 environments require
       NACE inspection.  All
     other aluminum or carbon
    steel structures in Zone 5
      environments are exempt
       from NACE inspection.
                 
  4.3  Inspection Hold Points. -
 Mandatory inspection hold points
shall include but not be limited to
          the following:
                 
        a. Verification of ambient
       weather conditions in
      accordance with 3.4.3.5
                 
         b. Prior to beginning of
     surface preparation work,
     to include the operation
           of equipment
                 
             c. After surface
       preparation work and
      before the beginning of
      the coating application
       work, to include the
        mixing of products
                 
          d. Before and after the
     application of each coat
            of material
                 
          e. After completion and
     prior to final acceptance
                 
   4.4  Inspection Forms. - All
 inspections shall be recorded and
documented on KSC Form Nos. 28-588,
 28-589, 28-589A, 28-675, and 28-
 676.  Forms can be obtained from
     the Contracting Officer.
                 
 4.5  Inspection Prior to Surface
      Preparation and Coating
   Application. - The following
conditions shall be inspected prior
    to commencement of surface
preparation and coating application
            operations.
                 
  4.5.1  Surface Condition. - The
surface condition shall be visually
   inspected for compliance with
3.4.2.  Special attention shall be
given to weld spatter, sharp edges,
 flame or saw cuts, etc., prior to
       surface preparation.
                 
   4.5.2  Protection of Adjacent
Surfaces. - Adjacent surfaces shall
be visually inspected for adequate
   protection in accordance with
3.4.2.  This inspection shall be in
conjunction with Government Quality
           Engineering.
                 
4.5.3  Ambient Weather Conditions.
- The ambient weather conditions at
  the actual location of the work
  shall be determined before and
during the surface preparation and
 coating application operations to
  ensure they are correct for the
  work being conducted.  The air
temperature, relative humidity, and
   dewpoint shall be determined
 through the use of a psychrometer
      in accordance with the
 manufacturer's instructions.  The
   surface temperature shall be
   determined by using a surface
  temperature thermometer.  Wind
   speed and direction shall be
    determined with a suitable
instrument.  No spray painting may
  proceed when the measured wind
speed in the immediate coating area
is above 25 kilometers per hour (15
  miles per hour).  All of these
ambient weather conditions shall be
 recorded on the Daily Inspection
              Record.
                 
4.5.4  Compressed Air Cleanliness.
 - The compressed air supply shall
be inspected for the use of inline
  moisture and oil traps.  Proper
 functioning of the traps shall be
evaluated daily by allowing the air
supply (downline from the traps) to
 blow against a clean, white cloth
 for several minutes.  No moisture
 or oil should be deposited on the
              cloth.
                 
4.5.5  Surface Salt Concentration.
    - On structures within 3.5
 kilometers (2 miles) of the ocean
    shore, the surface chloride
 concentration shall be determined
    using Saltesmo test strips
[available from Gallard-Schlesinger
Chemical Manufacturing Corporation
 (516) 333-5600] or other suitable
    methods and recorded in the
    Inspection Records weekly.
Surfaces that measure 50 milligrams
per square meter (0.00016 ounce per
square foot) or above require water
washing in accordance with 3.4.2.1.
                 
     4.6  Surface Preparation
    Inspection. - The following
inspections shall be made to ensure
    compliance with the surface
preparation requirements in 3.4.2.
                 
4.6.1  Abrasive Blasting Material.
 - The abrasive blasting material
 shall be verified for compliance
            with 3.1.1.
                 
 4.6.2  Blast Nozzle Air Pressure
and Size. - The air pressure at the
 blast nozzle shall be determined
  through the use of a hypodermic
  needle air pressure gage.  The
    needle of the gage shall be
inserted as close to the nozzle as
  practically possible and in the
    direction of the air flow.
 Pressure readings should be taken
    with the blasting system in
  complete operation.  The nozzle
 pressure shall be recorded.  The
 nozzle shall be checked initially
and then at a frequency determined
by the NACE inspector with a blast
 nozzle orifice gage to ensure the
 compressor output correlates with
         the nozzle size.
                 
     4.6.3  Degree of Surface
    Cleanliness. - The surface
  cleanliness shall be inspected
  after the completion of surface
preparation procedures and prior to
  primer application to determine
  compliance with the applicable
requirements of 3.5.  The degree of
  cleanliness of abrasive blasted
  carbon steel shall be verified
through the use of visual standards
   in accordance with 3.5.1.1.2.
  Galvanized steel, aluminum, and
stainless steel shall be inspected
for cleanliness in accordance with
  3.5.1.2, 3.5.2, and 3.5.3.  The
  surface preparation cleanliness
 requirements defined in 3.5 shall
be applicable to 100 percent of the
subject area, including places that
  are difficult to reach.  Use of
 SSPC-VIS 1-89 is recommended for
   judging surface cleanliness.
                 
     4.6.4  Surface Profile or
Roughness. - The anchor profile of
 an abrasive-blasted carbon steel
  surface shall be determined by
   using a surface profile gage,
 comparator, or replica tape.  The
profile shall be in accordance with
   3.5.1.1.2.  Galvanized steel,
   stainless steel, and aluminum
    surfaces shall be visually
 inspected as required for slight
   roughening in accordance with
    3.5.1.2, 3.5.2, and 3.5.3.
                 
   4.6.5  Blasting of Abrasive-
   Sensitive Components. - Thin-
    walled, abrasive-sensitive
components will be protected during
   normal blasting operations in
  accordance with 4.5.2.  Surface
  preparation of these sensitive
components will use walnut shell or
 approved equivalent in accordance
            with 3.1.1.
     4.7  Coating Application
    Inspection. - The following
inspections shall be made to ensure
    compliance with the coating
application requirements defined in
              3.4.3.
                 
  4.7.1  Surface Condition. - The
prepared surface shall be visually
   inspected and the time before
  coating shall be monitored for
   compliance with 3.4.3 before
       coatings are applied.
                 
  4.7.2  Coating Materials. - The
coating materials shall be visually
   inspected for compliance with
             3.4.3.1.
                 
4.7.3  Storage of Coating Material.
    - Coating material storage
 conditions shall be periodically
   inspected for compliance with
             3.4.3.3.
                 
 4.7.4  Mixing and Application of
    Coatings. - The mixing and
 application of all coatings shall
  be visually inspected to ensure
 compliance with 3.4.3.4, 3.4.3.6,
           and 3.4.3.9.
                 
 4.7.5  Coating Finish and DFT. -
The finish and DFT of each applied
  coating shall be inspected for
  compliance with 3.4.3.7 and 3.5
    prior to the application of
    successive coats.  The DFT
 measurement on carbon steel shall
  be taken using a magnetic gage
calibrated in accordance with SSPC
PA2.  DFT measurements on aluminum
and stainless steel shall be taken
 using an eddy current instrument
 that has been properly calibrated
 on surfaces similar to the coated
             surface.
                 
  4.8  Caulking Inspection. - All
  surfaces shall be inspected to
   determine compliance with the
   requirements for sealing and
caulking in accordance with 3.4.4.
                 
  4.9  Galvanizing Inspection. -
 Galvanized carbon steel shall be
 inspected in accordance with the
    applicable ASTM standard in
            3.5.1.2.1.
                 
   5.  PREPARATION FOR DELIVERY
                 
          Not applicable.
                 
             6.  NOTES
                 
6.1  Intended Use. - This standard
 is intended to establish uniform
practices, methods, and procedures.
  The information provided herein
 shall be used for the preparation
  of written, individual coating
    specifications for specific
  projects for the prevention of
  atmospheric corrosion on space
    vehicle launch structures,
  facilities, and ground support
 equipment in a seacoast/corrosive
 environment.  Due to the changing
 environmental considerations, new
   advances in corrosion control
 technology, and the wide array of
    possible applications, this
 document should not be used as a
  stand-alone specification that
     meets every contingency.
                 
      6.2  Additional Related
Information. - For information and
  guidance on dissimilar metals,
 corrosion-inhibiting lubricants,
etc., refer to T.O. 1-1-691 and KSC-
              TM-584.
                 
 NOTICE.  The Government drawings,
  specifications, and/or data are
 prepared for the official use by,
  or on the behalf of, the United
States Government.  The Government
 neither warrants these Government
drawings, specifications, or other
       data, nor assumes any
 responsibility or obligation, for
 their use for purposes other than
 the Government project for which
they were prepared and/or provided
 by the Government, or an activity
directly related thereto.  The fact
   that the Government may have
 formulated, furnished, or in any
  way supplied the said drawings,
 specifications, or other data is
not to be regarded, by implication
 or otherwise, as licensing in any
  manner the holder or any other
    person or corporation, nor
conveying the right or permission,
 to manufacture, use, or sell any
patented invention that may relate
             thereto.
                 
            Custodian:
        Preparing Activity:
                 
NASA - John F. Kennedy Space Center    John F. Kennedy
           Space Center
  Kennedy Space Center, FL 32899
      Mechanical Engineering
                 
Engineering Development Directorate
                          APPENDIX A

      APPROVED PRODUCTS LIST FOR INORGANIC ZINC COATINGS

This list has been prepared for use by or for the Government
in the procurement of products covered by this document, and
such listing of a product is not intended to and does not
connote endorsement of the product by NASA.  All products
listed herein have been tested and meet the requirements for
the product as specified.  This list is subject to change
without notice; revisions or amendments of this list will be
issued as necessary.  The listing of a product does not
release the supplier from compliance with the specification
requirements.  This list is arranged in two sections based on
the coating material's Volatile Organic Content (VOC).  Use of
the information shown hereon for advertising or publicity
purposes is strictly forbidden.

Thinners and cleaners for each of these coatings shall be
procured from the manufacturer of the coating in accordance
with 3.4.3.1 and 3.4.3.4.

The agency responsible for this list is the KSC Engineering
Development Directorate.

Section I.  Materials With Greater Than 420 Grams/Liter (3.5
Pounds/Gallon) VOC (SB Is Solvent-Based and WB Is Water-
Based):

    Coating Designation      Type      Manufacturer

    Dimetcote 6              SB        Ameron P.C.D.
    Dimetcote 9              SB        201 North Berry Street
                                       Brea, CA 92691
                                       (714) 529-1951

    Carbo-Zinc 11            SB        Carboline Company
                                       350 Hanley Industrial
Court
                                       St. Louis, MO 63114
                                       (314) 644-1000

    Zinc-Plate 21            SB        Con-Lux Coatings, Inc.
                                       226 Talmadge Road
                                       Edison, NJ 08818
                                       (201) 287-4000

    Coating Designation      Type      Manufacturer

    Cathacoat 304            SB        Devoe Coatings Co.
                                       4000 Dupont Circle
                                       Louisville, KY 40207
                                       (502) 897-9861

    Ganicin 347-Y-931        SB        DuPont
                                       1007 Market Street
                                       Wilmington, DE 19898
                                       (302) 774-8297

    Engard 519               SB        Engard Coatings Corp.
                                       15541 Commerce Lane
                                       Huntington Beach, CA
92649
                                       (714) 891-4402

    Zinc-Lock 311            SB        Porter International
                                       400 South 13 Street
                                       Louisville, KY 40201
                                       (502) 588-9200

    PPG 1001                 SB        PPG Industries, Inc.
                                       One PPG Place
                                       Pittsburgh, PA  15272
                                       (412) 434-3131

    Zinc-Clad B69-V-1        SB        Sherwin Williams
Company
                                       101 Prospect Avenue
N.W.
                                       Cleveland, OH 44115
                                       (216) 566-3349

    Sigma 7551               SB        Sigma Coatings, Inc.
                                       P.O. Box 826
                                       Harvey, LA 70059
                                       (504) 347-4321

    Valspar 13-F-12          SB        Valspar Corp.
                                       1101 Third Street South
                                       Minneapolis, MN 55415
                                       (612) 332-7371

Section II.  Materials With Less Than 340 Grams/Liter (2.8
Pounds/Gallon) VOC (SB Is Solvent-Based and WB Is Water-
Based):

    Coating Designation      Type      Manufacturer

    Dimetcote D-21-7         WB        Ameron P.C.D.
    Dimetcote D-21-9         SB        210 North Berry Street
                                       Brea, CA 92691
                                       (714) 529-1951

    Briner V-65              WB        Briner Paint Company
                                       3713 Agnes Street
                                       Corpus Christi, TX
78405
                                       (512) 884-4804

    Carbo-Zinc 11HS          SB        Carboline Company
    Carbo-Zinc D7            WB        350 Hanley Industrial
Court
                                       St. Louis, MO 63114
                                       (314) 644-1000

    Zinc-Plex 6              WB        Con-Lux Coatings, Inc.
                                       226 Talmadge Road
                                       Edison, NJ 08818
                                       (201) 287-4000

    Cathacoat 305            WB        Devoe Coatings Co.
                                       4000 Dupont Circle
                                       Louisville, KY 40207
                                       (502) 897-9861

    Ganicin 347WB            WB        DuPont
                                       1007 Market Street
                                       Wilmington, DE 19898
                                       (302) 774-8297

    Elite 4610               WB        Elite Coatings Co.,
Inc.
                                       P.O. Box 130
                                       Gordon, GA 31031
                                       (912) 628-2111

    Coating Designation      Type      Manufacturer

    Galvosil 1562            WB        Hempel Coatings, Inc.
                                       6901 Cavalcade
                                       Houston, TX 77028
                                       (713) 672-6641

    IC-531                   WB        Inorganic Coatings
                                       500 Lapp Road
                                       Malvern, PA 19355
                                       (215) 640-2880

    MAB 24-A-190             WB        M.A. Bruder & Sons,
Inc.
                                       600 Reed Road
                                       Broomall, PA 19008
                                       (215) 353-5100

    Mo-Zinc 2                WB        BLP Mobile Paints
                                       P.O. Box 717
                                       Theodore, AL 36590
                                       (205) 653-0110

    Zinc-ite 9030            SB        Plas-Chem Coatings,
Inc.
    Zinc-ite W-9108          WB        P.O. Box 40246
                                       Jacksonville, FL 32203
                                       (904) 766-8000

    IZ-91N                   WB        Porter International
    TQ-4374H                 WB        400 South 13 Street
                                       Louisville, KY 40201
                                       (502) 588-9200

    Zinc Clad II             SB        Sherwin Williams
Company
    Zinc Clad 10             WB        101 Prospect Avenue
N.W.
                                       Cleveland, OH 44115
                                       (216) 566-3349

    Tornusil 7550            WB        Sigma Coatings, Inc.
                                       P.O. Box 826
                                       Harvey, LA 70059
                                       (504) 347-4321

    Coating Designation      Type      Manufacturer

    Chemtec 600              WB        Southern Coatings, Inc.
                                       P.O. Box 160
                                       Sumter, SC 29151
                                       (803) 775-6351

    V13-F-12                 SB        Valspar Corp.
    13-F-6                   WB        1101 Third Street South
                                       Minneapolis, MN 55415
                                       (612) 332-7371

                          APPENDIX B

          APPROVED PRODUCTS LIST FOR TOPCOAT SYSTEMS

This list has been prepared for use by or for the Government
in the procurement of products covered by this document, and
such listing of a product is not intended to and does not
connote endorsement of the product by NASA.  All products
listed herein have been tested and meet the requirements for
the product as specified.  This list is subject to change
without notice; revisions or amendments of this list will be
issued as necessary.  The listing of a product does not
release the supplier from compliance with the specification
requirements.  This list is arranged in two sections based on
the coating material's Volatile Organic Content (VOC).  Use of
the information shown hereon for advertising or publicity
purposes is strictly forbidden.

Thinners and cleaners for each of these coatings shall be
procured from the manufacturer of the coating in accordance
with 3.4.3.1 and 3.4.3.4.

The agency responsible for this list is the KSC Engineering
Development Directorate.

Section I.  Materials With Greater Than 420 Grams/Liter (3.5
Pounds/Gallon) VOC (SB Is Solvent-Based and WB Is Water-
Based):

Primer (Type)    Midcoat (Type)              Topcoat (Type)
Manufacturer

Cathacoat 304 (SB)             201 (SB)      359 (SB)  Devoe
Coatings Co.
Cathacoat 304 (SB)             230 (SB)      369 (SB)  4000
Dupont Circle
Cathacoat 304 (SB)             201 (SB)      369 (SB)
Louisville, KY 40207
                                             (502) 897-9861

Engard 519 (SB)  1447 (SB)     428 (SB)      Engard Coatings
                                               Corp.
Engard 519 (SB)  1447 (SB)     449 (SB)      15541 Commerce
                                               Lane
                                             Huntington Beach,
                                                CA 92649
                                             (714) 891-4402

Primer (Type)    Midcoat (Type)              Topcoat (Type)
Manufacturer

Zinc-Lock 311 (SB)             MCR-4335 (SB) 8610 (SB) Porter
International
                                             400 South 13th
St.
                                             Louisville, KY
40201
                                             (502) 588-9200

PPG 1001 (SB)    97-139 (SB)   97-812 (SB)   PPG Industries,
Inc.
PPG 1001 (SB)    97-148 (SB)   97-812 (SB)   One PPG Place
                                             Pittsburgh, PA
15272
                                             (412) 434-3131

Sigma 7551 (SB)  5434 (SB)     5523 (SB)     Sigma Coatings,
Inc.
                                             P.O. Box 826
                                             Harvey, LA 70059
                                             (504) 347-4321

Section II.  Materials With Less Than 340 Grams/Liter (2.8
Pounds/Gallon) VOC (SB Is Solvent-Based and WB Is Water-
Based):

Primer (Type)    Midcoat (Type)              Topcoat (Type)
Manufacturer

D-21-9 (SB)      400 (SB)      450HS (SB)    Ameron P.C.D.
                                             210 North Berry
St.
                                             Brea, CA 92691
                                             (714) 529-1951

Briner V-65 (WB) 5382 (WB)     5353 (WB)     Briner Paint Co.
                                             3713 Agnes Street
                                             Corpus Christi,
TX
                                             78405
                                             (512) 884-4804

CZ-11HS (SB)     893 (SB)      134HS (SB)    Carboline Company
CZ-11HS (SB)     CM-15 (SB)    3359 (WB)     350 Hanley
Industrial Ct.
CZ-D7(WB)        3358 (WB)     3359 (WB)     St. Louis, MO
63114
                                             (314) 644-1000

Primer (Type)    Midcoat (Type)              Topcoat (Type)
Manufacturer

Zinc Plex 6 (WB) 1788-90 (WB)  1788-90 (WB)  Con-Lux Coatings,
Inc.
                                             226 Talmadge Road
                                             Edison, NJ 08818
                                             (201) 287-4000

Cathacoat 305 (WB)             648 (WB)      669 (WB)  Devoe
Coatings Co.
                                             4000 Dupont
Circle
                                             Louisville, KY
40207
                                             (502) 897-9861

Ganicin 347 (WB) 25P (SB)      333 (SB)      DuPont
                                             1007 Market
Street
                                             Wilmington, DE
19898
                                             (302) 774-8297

IC-531 WB)       IC-46P (WB)   IC-46 (WB)    Inorganic
Coatings
                                             500 Lapp Road
                                             Malvern, PA 19355
                                             (215) 640-2880

MAB 24-A-190 (WB)              101 (SB)      880HS (SB)
M.A. Bruder & Sons
                                             600 Reed Road
                                             Broomall, PA
19008
                                             (215) 353-5100

W-9108 (WB)      2316 (SB)     2885 (SB)     Plas-Chem
Coatings, Inc.
                                             P.O. Box 40246
                                             Jacksonville, FL
32203
                                             (904) 766-8000

Valspar 13-F-6 (WB)            76 (SB)       54 (SB)   Valspar
Corp.
                                             1101 Third St.
South
                                             Minneapolis, MN
55415
                                             (612) 332-7371