**KSC Respiratory**

**Protection Program**

National Aeronautics and

Space Administration

#### John F. Kennedy Space Center 

**KSC FORM 16-12 (REV. 7/92)**

**Responsible Office** : \* Spaceport Services

[PREFACE]{.underline}

This Handbook provides NASA civil service, KSC and CCAFS contractor
personnel, and their subcontractors with guidelines for the
implementation of the KSC Respiratory Protection Program. It provides
both general and specific requirements for protective measures to be
taken for employees who may be exposed to toxic air contaminants and
oxygen deficient atmospheres. This Handbook does not in any way relieve
various NASA organizations and their associated contractors of
responsibility for the protection of personnel under their cognizance.

This Handbook applies to all KSC organizational elements and to their
associated contractors and subcontractors as expressed in terms of their
respective contracts.

This Handbook supersedes KHB 1820.4, Revision A, dated December 1, 1998.

J. Chris Fairey

Director of Spaceport Services

[Distribution]{.underline}:

Tech Doc Library

i/ii

## TABLE OF CONTENTS

PREFACE i/ii

TABLE OF CONTENTS iii

LIST OF REFERENCES iv

LIST OF TABLES v

SECTION TITLE PAGE

1\. Functional Requirements

1.1 Heads of Primary Organizations1-1

1.2 The KSC Occupational Medicine Officer 1-2

1.3 The J-BOSC Technical Training Office and other contractor training
organizations 1-2

1.4 The J-BOSC Industrial Hygiene Office 1-2

1.5 The KSC Respiratory Protection Officer 1-3

1.6 The Respiratory Protection Panel 1-3

1.7 The J-BOSC Life Support 1-4

1.8 Civil Service Line Management and Contract Employers 1-6

1.9 Individual Employees 1-7

2\. Respiratory Protection Program 2-1

2.1 General 2-1

2.2 Written Operating Procedures 2-1

2.3 Respiratory Protective Equipment 2-1

2.4 Breathing Escape Units 2-3

2.5 Respirator Care and Maintenance 2-4

2.6 Breathing Air 2-4

2.7 Health Hazard Evaluation 2-4

2.8 Medical Screening and Surveillance Examinations 2-5

2.9 Employees Training and Respirator Fit Testing 2-5

2.10 Records 2-6

APPENDIX A Definitions A-1

APPENDIX B Table 1, Air Purifying Respirators B-1

Table 2, Atmosphere Supplying Respirators B-2

Table 3, Compressor Breathing Air Evaluations B-3

iii

List of References

Title 29 Code of Federal Regulation (CFR), 1910.94, 1910.134, 1910.139,
and 1910.1000 - End

Title 42 CFR Part 84

Privacy Act of 1974 (5 USC 522. (i)(1))

KHB 1710.2 (as revised), "NASA Safety Policy and Procedures Document"

KMI 1800.1 (as revised), "Hazard Communication Program"

KHB 1840.1 (as revised), KSC Industrial Hygiene Handbook"

KBM-PL-2.1, "Medical Standards for the John F. Kennedy Space Center and
Cape Canaveral Air Force Station"

Air Force Occupational Safety and Health Standard 48-137, November 1,
1998, Respiratory Protection Program

ANSI/CGA G-7.1- 1989, "Commodity Specification for Air"

ANSI/CGA C-4-1990, "Method of Marking Portable compressed Gas Containers
to Identify the Material Contained"

ANSI Z88.2-1992 (as revised), "American National Standard for
Respiratory Protection"

Federal Specification BB-A-1034B, October 30, 1991, "Compressed Air,
Breathing"

American Conference of Governmental Industrial Hygienists, "Threshold
Limit Values for Chemical Substances and Physical Agents and Biological
Exposure Indices" (current edition)

National Institute for Occupational Safety and Health (NIOSH), Guide to
Industrial Respiratory Protection

U.S. Air Force technical Order 42B-1-22, Change 18, July 30, 1994,
"Quality Control of Compressed and Liquid Breathing Air"

iv

List of Tables

Table 1 Air Purifying Respirators B-1

Table 2 Atmosphere Supplying Respirators B-2

Table 3 Compressor Breathing Air Evaluations B-3

v

SECTION 1: [FUNCTIONAL REQUIREMENTS]{.underline}

1.  Heads of Primary Organizations and Heads of Contractor Organizations
    to the extent provided by their contracts will:

    a.  Provide operational implementation of the requirements of this
        KHB.

    b.  Ensure personnel:

        1.  Are notified of hazards and protective measures governing
            work with hazardous chemical agents.

        2.  Are provided appropriate training and orientation to
            identify hazards associated with chemical agents in their
            work places and to use respiratory protective equipment
            provided for their safety.

        3.  Are notified of any changes or modifications to systems used
            to control exposure to these agents.

    c.  Implement and maintain control measures required preventing or
        otherwise reducing employee potential exposure to hazardous
        chemical agents.

    d.  Observe applicable provisions of KHB 1840.1, \"KSC Industrial
        Hygiene Handbook\" and KMI 1800.2, \"Hazard Communication
        Program\".

    e.  Ensure assessment plans, processes, and operations are reviewed
        for elimination or control of air contaminant hazards.

    f.  Designate organization representatives to the KSC Respiratory
        Protection panel.

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1.  The KSC Occupational Medicine Officer, or his/her designated
    representative, will:

    a.  Provide medical evaluations to personnel identified by their
        organizations as respirator users.

    b.  Provide medical screening and surveillance examinations for
        those employees who may be occupationally exposed to certain
        hazardous chemical agents, as required by 29 CFR Part 1910, 29
        CFR Part 1926, and/or other applicable NASA/AF requirements.

    c.  Provide, on a case basis, special physical evaluations to
        personnel identified as being exposed or potentially exposed to
        hazardous chemical agents as the result of an accident, mishap,
        or other unusual circumstance.

    d.  Ensure that physical examination criteria as defined in
        KBM-PL-2.1 is implemented to conform to the protocols defined by
        OSHA, where required, and other nationally recognized standards
        as applicable.

    e.  Maintain records of all Occupational Medicine activities
        associated with support to the KSC Respiratory Protection
        Program as defined by Federal Regulation; i.e., OSHA, NASA
        Health Standards.

    f.  Provide employee access to medical records in accordance with 29
        CFR 1910.1020 and the Privacy Act of 1974, as amended (5 USC
        522.a).

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2.  The J-BOSC Technical Training Office, or other contractor training
    organizations will, to the extent provided by contract, provide
    respirator fit testing, training and certification, and maintain
    associated employee training and certification records.

3.  The J-BOSC Industrial Hygiene Office will:

    a.  Provide baseline surveys of operations, tasks, or procedures,
        which possess the potential to create harmful air contamination.

    b.  Provide Health Hazard Evaluations of operations, tasks, or
        procedures where baseline surveys have shown the presence of
        harmful air contaminants at concentrations, which may pose a
        health hazard to personnel.

    c.  Provide area and/or personal exposure monitoring which represent
        the exposure of employees where previous surveys have shown the
        presence of air contaminants at concentrations in excess of the
        action level.

    d.  Provide the Occupational Medicine Officer or his designated
        representative access to exposure monitoring records.

    e.  Provide to supervisors, site managers, or responsible safety
        organizations in the affected work area the:

        1.  Results of surveys and recommendations.

        2.  Recommended methods for the control or elimination of air
            contaminant hazards.

        3.  Requirements for employees to participate in the Respiratory
            Protection Program.

        4.  Recommendations on the selection of respiratory protective
            equipment.

    f.  Notify employers of exposure monitoring results for affected
        employees.

    g.  Review facility plans and operational procedures to assess the
        adequacy of precautions taken to control workplace air
        contaminants.

    h.  Provide technical assistance in the selection and de­sign of
        engineering controls and work practices used to control or
        eliminate air contaminants.

    i.  Perform inspections of breathing air compressors and associated
        air filtration systems.

    j.  Chair the KSC Respiratory Protection Panel.

4.  The KSC Respiratory Protection Officer, or his/her designated
    representative, will:

    a.  Administer the KSC Respiratory Protection Program for NASA Civil
        Service personnel.

    b.  Coordinate development of Respiratory Protection Program
        Training courses with The Chief, Human Resources Development
        Branch.

    c.  Provide technical assistance in the selection and use of
        respiratory protection equipment.

5.  The Respiratory Protection Panel (RPP) serves as a
    government/contractor forum for the implementation of respiratory
    protection programs. Membership consists of the KSC Respiratory
    Protection Program Officer, designated representatives of NASA and
    resident Kennedy Space Center (KSC) contractor organizations
    representing; Occupational Medicine, Environmental Health, Life
    Support, Fire Services, Safety, and Training, as well as each
    contractor respiratory protection program administrator. The panel
    will:

    a.  Provide consultative services to KSC Management and contractors
        on items related to respiratory protection.

    b.  Coordinate actions to resolve problems or rectify deficiencies
        in the selection, use, and maintenance of respirators.

    c.  Provide a forum for discussion and resolution of issues related
        to industrial hygiene, life support, occupational medicine,
        fire, and training services provided by NASA to its contractors
        in support of their respiratory protection programs.

    d.  Assist the KSC Respiratory Protection Officer in the development
        and maintenance of respiratory protection policies,
        requirements, and general practices of the KSC Respiratory
        Protection Program.

    e.  Coordinate permanent deployment/removal of Breathing Escape
        Units as outlined in section II, paragraph 2.4.

6.  The J-BOSC Life Support will:

    a.  Service all respirators assigned to Life Support to include
        inspection, testing, cleaning, sanitizing, repair, and refilling
        of cylinders and maintain records of all elements performed.

    b.  Act as the main point of procurement initiation and issuance for
        supplied air respiratory protective devices in coordination with
        the KSC Respiratory Protection Officer and Propellants and Life
        Support Sustaining Engineering.

    c.  Perform periodic preventive maintenance procedures on all
        assigned respirators and maintain records of these inspections
        on a recurring basis at frequencies determined by Life Support
        Systems and Sustaining Engineering as detailed in Operational
        Maintenance Requirements and Specifications Documents (OMRSD's).

    d.  Ensure appropriate manufacturer's certification for Life Support
        technicians who perform respirator maintenance. Ensure periodic
        recertification to maintain and upgrade technicians'
        capabilities. Maintain records of all such training,
        certification and recertification.

    e.  Prepare and update as required, Operation and Maintenance
        Instructions (OMIs) for the use, servicing, and repair of all
        used respirators in accordance with OMRSDs and manufacturers'
        recommendations.

    f.  Provide consultative support to the KSC Respiratory Protection
        Panel on all aspects of respiratory protective equipment.

    g.  Provide training with information and documentation relative to
        changes in procedures or configuration of respiratory protective
        equipment that could affect the respiratory training program.

7.  Civil Service Line Management and Contract Employers will:

    a.  Coordinate with appropriate safety and environmental health
        personnel to request workplace health hazard assessment of
        operations with suspected air contaminant generation.

    b.  Develop written operations specific requirements for the use of
        respiratory protection equipment, as identified in the health
        hazard evaluation.

    c.  Ensure that there is proper completion and submittal of KSC
        forms: 16-539 "KSC/CCAFS RESPIRATOR USAGE QUESTIONAIRE"
        (completed by employer); 16-540 "KSC/CCAFS RESPIRATOR MEDICAL
        EVALUATION QUESTIONAIRE" (completed by employee) and 13-116
        "PHYSICAL EXAMINATION REQUEST/REPORT FORM", which are required
        for the medical evaluation.

    d.  Ensure employees who have a medical evaluation by a Physician or
        other Licensed Health Care Professional (PLHCP) outside of the
        KSC/CCAFS Occupational Medicine Services will have the
        appropriate documentation on file with their employer that
        states conformity and compliance with OSHA's medical evaluation
        guidelines.

    e.  Ensure that employees seeking certification to use respiratory
        protective equipment are medically certified to use such
        equipment and attend, Respiratory Protection Program training,
        and respirator fit testing, as required.

    f.  Ensure that employees are provided with the proper visual
        correction devices that are compatible with proper and effective
        respirator use, when visual correction has been determined
        necessary by the PLHCP.

    g.  Attend the Respiratory Protection Program training provided for
        their employees.

    h.  Verify that employees are issued the correct type and size
        respirator for which they have been fitted and certified.

    i.  Ensure the proper use of respiratory protection equipment,
        engineering controls, and work practices established to reduce
        workplace exposure to harmful air contaminants.

    j.  Ensure that employees are not assigned to tasks requiring the
        use of respirators when they have facial hair, scars, missing
        dentures, etc., which have the potential for causing leakage in
        the sealing surface of the respirator.

    k.  Notify their affected employees of the results of Health Hazard
        Evaluations and exposure monitoring surveys, as defined in
        Section 2.4 of this Handbook.

    l.  Ensure the proper care and maintenance of respirators issued to
        their employees.

    m.  Maintain a current list of employees having respirator use
        certifications.

    n.  Review work assignments/work area hazards to determine potential
        need for use of respiratory protection equipment.

    o.  When respiratory protection must be worn for protection from
        hazardous materials, review Material Safety Data Sheets for
        those materials with the affected employees.

    p.  Assist in the development of strategies to control or eliminate
        exposure to hazardous air contaminants.

8.  Individual Employees will:

    a.  Use control procedures established to maintain air contaminant
        control, including wearing and maintaining respiratory
        protective devices, as instructed.

    b.  Cooperate with supervisory, medical, environmental health, and
        safety personnel in activities to evaluate and control air
        contaminant hazards.

    c.  Notify supervisors of areas, operations, or equipment that may
        be a source of air contaminants.

    d.  Report any suspected chemical exposures to their supervisors.

    e.  Complete a KSC/CCAFS Respirator Medical evaluation Questionnaire
        Form (KSC Form 16-540) and submit to Occupational Medicine for
        evaluation.

    f.  Notify supervisors of changes in their health status that may
        affect their ability to safely use respiratory protection and
        resubmit the KSC Form 16-540.

SECTION 2: [RESPIRATORY PROTECTION PROGRAM]{.underline}

1.  General

> This Section establishes guidelines for the use of respiratory
> protective equipment at the Kennedy Space Center and the Cape
> Canaveral Air Force Station (KSC/CCAFS). These guidelines establish
> practices and procedures where the use of such equipment is required
> to perform tasks that are inherently hazardous because of the presence
> of toxic air contaminants and/or oxygen deficient atmospheres. These
> guidelines are applicable to all NASA civil service and contractor
> organizations as well as their subcontractors. Mandatory requirements
> for compliance with the OSHA Respiratory Protection Standard are not
> repeated in this KHB, but may be found in 29 CFR 1910.134.

2.  Written Operating Procedures

Operating procedures that require the use of respiratory protective
equipment are considered hazardous and must meet the requirements of KHB
1710.2, Annex B.

3.  Respiratory Protective Equipment

    a.  Adequate respiratory protection will be provided whenever;

        1.  Personnel are required to work in hazardous atmospheres
            where the action level of the hazardous air contaminant is
            exceeded or oxygen deficient atmospheres are present.

        2.  Personnel are involved in the handling, transfer, or use of
            hazardous chemicals where the toxicity of the chemical is of
            such a nature as to place those personnel at significant
            risk of serious illness or injury in the event of a leak,
            spill, or other release of the chemical.

        3.  Personnel are required to enter atmospheres which have
            unknown concentrations of oxygen and/or air contaminants.

        4.  An Industrial Hygienist or Safety Professional determines
            that personnel exposure(s) could exceed the action level.

    b.  The selection of respiratory protection equipment will take into
        consideration:

        1.  The nature of the hazard(s) associated with the operation or
            process;

        2.  The nature of the work operation or process;

        3.  The physical and chemical properties and additive effects of
            the air contaminant(s); (additional general considerations
            are sorbent efficiencies, odor warning properties,
            irritation potential, and lower flammability limit);

        4.  The adverse health effects of the air contaminant(s);

        5.  Warning properties of the hazardous air contaminant(s);

        6.  The relevant Occupational Exposure Limits (OEL);

        7.  The measured concentration(s) of hazardous air
            contaminant(s);

        8.  Worker activities in the area of the operation and the
            potential stress of work conditions on employees wearing the
            respirators;

        9.  The period of time respiratory protection will be worn by
            employees during the work shift;

        10. The physical characteristics, functional capabilities, and
            limitations of the respirator; and

        11. The substance specific OSHA standard.

    c.  Selection of appropriate respiratory protection equipment will
        take into account the Assigned Protection Factor (APF) for each
        type of respirator as listed in Appendix B and OSHA specific
        substance standards.

    d.  Selection of air purifying respirators is limited to the lowest
        of:

        1.  The IDLH Concentration

        2.  The APF X OEL

        3.  The MUCs listed in 42 CFR 84 Subpart L, Section 84.190

    e.  For selection and use limitations of particulate respirators,
        consult 42 CFR Part 84.

4.  Breathing Escape Units

    a.  Breathing Escape Units (BEUs) are required in work areas where:

        1.  A potential exists for the rapid development of an
            Immediately Dangerous to Life or Health (IDLH) atmosphere,
            [and]{.underline}

        2.  There is no immediate means for the affected employees to
            egress the IDLH area to a safe atmosphere.

    b.  Requests for permanent deployments/removal of BEUs will be made
        to the KSC Respiratory Protection Panel. The Panel will make an
        evaluation as to whether the above criteria are met. The Panel
        will appoint a team to evaluate the request. The evaluation team
        will include representatives of:

        1.  The responsible contractor Safety and Health Organization
            (Team Lead, responsible for coordinating the assessment)

        2.  NASA Safety

        3.  Life Support

        4.  Environmental Health

        5.  The requesting organization

    c.  On completion of the evaluation, the Chair of the KSC
        Respiratory Protection Panel will prepare a written report for
        concurrence by the members of the evaluation team. The report
        will:

        1.  Evaluate the toxic properties of the hazardous commodities
            in question

        2.  Evaluate accident scenarios in which an IDLH atmosphere
            could rapidly develop

        3.  Identify operations in the affected area and the number of
            employees potentially exposed to the hazardous condition

        4.  Identify the availability of rapid egress routes for
            affected employees to take in the event of an emergency and
            time required for the egress

        5.  List other mitigating factors, as applicable

    d.  Upon distribution of the report, Life Support will provide
        recommended BEUs based upon availability. The requesting
        organization is responsible for coordinating with Life Support
        for the deployment/removal of BEUs.

    e.  It is the responsibility of the requesting organization to
        revise all documentation (e.g., OMIs, KPRD, and Facility
        Drawings) needed to assure the proper scheduling and deployment
        of the requested BEUs. When additional BEUs are required, but
        are not available for support from the existing Life Support
        inventory, it is the responsibility of the requesting
        organization to coordinate their procurement and maintenance
        with NASA Spaceport Services and Life Support.

5.  Respirator Care and Maintenance

Cleaning and disinfection of respirators will be in accordance with 29
CFR 1910.134, Appendix B-2.

6.  Breathing Air

    a.  Compressed breathing air shall meet the requirements in 29 CFR
        1910.134 paragraph (i).

    b.  Testing of compressor-supplied breathing air will be in
        accordance with Table 3, Appendix B.

7.  Health Hazard Evaluation

    a.  An initial Health Hazard Evaluation of potentially hazardous
        operations will be conducted when any information, observation,
        or calculation shows that an employee may be exposed to
        oxygen-deficient atmospheres and/or air contaminants above their
        action levels. This includes, but is not limited to, data from
        monitoring of similar operations, procedure reviews, potential
        for skin and eye contact, and employee complaints of unusual
        odors, irritations, or other signs or symptoms of potential
        exposures.

        1.  The Health Hazard Evaluation will evaluate and describe:

            a.  the operation, process, and/or equipment generating the
                air contaminant(s),

            b.  their approximate concentrations,

            c.  other operations in the area,

            d.  the number of potentially exposed employees,

            e.  the duration and frequency of the exposure,

            f.  respiratory protection requirements,

            g.  associated Personal Protective Equipment (PPE), and

            h.  any regulatory requirements applicable to the operation.

        2.  Health hazard evaluations will be repeated annually, or
            whenever any changes to facilities, equipment, work
            practices, procedures, and/or engineering control measures
            are made.

    b.  Employees and/or their representatives will be provided an
        opportunity to observe area and personal exposure monitoring.

    c.  Results of Health Hazard evaluations will be posted in the
        affected employees\' work areas or otherwise provided to
        affected employees for their review.

8.  Medical Screening and Surveillance Examinations

    a.  Medical evaluation is required for every employee who is to be
        assigned to tasks requiring the use of respiratory protective
        equipment.

    b.  Specific requirements for medical evaluation are defined in 29
        CFR 1910.134, Appendix C, or as otherwise directed by the
        Occupational Medicine Officer.

    c.  For employees who are not resident at the Kennedy Space Center,
        the Occupational Medicine Officer may accept an already existing
        medical examination or written opinion from a licensed physician
        stating whether the employee has any detected medical condition
        which would place the employee\'s health at increased risk from
        respirator use and any recommended limitations on the use of
        respirators.

9.  Employee Training and Respirator Fit Testing

    a.  Respirator training and fit testing will be in accordance with
        29 CFR 1910.134.

    b.  Upon completion of fit testing and verification of employees\'
        medical certifications, each employee will be issued a
        certification card (KSC Form 31-81NS) which identifies the
        employee, and the manufacturer(s), model(s), size(s), expiration
        date, protection factor(s) of the respirator(s), and fit
        tester's initials for which the employee has been fit tested.

    c.  Qualitative (QLFT) and quantitative (QNFT) fit tests will be
        performed only by qualified individuals specifically trained and
        assigned responsibility for providing respirator fit tests.

    d.  Fit-test results shall be related to Assigned Protection Factors
        as follows:

        1.  Quarter-facepiece and half-mask, air-purifying respirators
            may be worn in atmospheres no greater than 10 times the
            established exposure limit, when the respirator user passes
            the qualitative fit test; or when the respirator user passes
            a quantitative fit test with a minimum fit factor of greater
            than 100.

        2.  Full-facepiece, air-purifying respirators may be worn in
            atmospheres no greater than 50 times the established
            exposure limit when the respirator user passes a
            quantitative fit test with a minimum fit factor greater than
            500.

        3.  Powered air-purifying respirators and supplied-air
            respirators with tight-fitting facepieces require fit
            testing. They may be used in atmospheres no greater than
            allowed by the Assigned Protection Factor for that
            respirator listed in Appendix B, Tables 1 and 2.

10. Records

    a.  Access to employee exposure and medical records will be in
        accordance with 29 CFR 1910.1020 and the Privacy Act of 1974, as
        amended (5 USC 522.a). Employee exposure and medical records
        will be maintained in accordance with the requirements of 29 CFR
        1910.1020.

    b.  Copies of this Handbook, 29 CFR 1910.134 (OSHA Respiratory
        Protection Standard), other applicable OSHA regulations, and any
        appropriate records required by this Handbook will be provided,
        upon request, to employees, former employees, representatives of
        employees, representatives of the U.S. Department of Labor, and
        NASA Headquarters personnel. Copies of this Handbook and other
        current NASA issuance's are available electronically at the KSC
        Business World web site
        (<http://www.ksc.nasa.gov/docs/management/khb.html>) under KSC
        Procedures and Guidelines (KHB\'s & KPD\'s).

Appendix A: [DEFINITIONS]{.underline}

1.  [Action Level]{.underline}: a measured airborne concentration of an
    air contaminant that is equal to one-half the Occupational Exposure
    Limit for the contaminant, or other concentration where specified by
    OSHA substance-specific standard.

2.  [Adequate warning properties]{.underline}: detectable
    characteristics of a hazardous air contaminant including odor,
    taste, and/or irritation effects that are detectable and persistent
    at concentrations at or below the Occupational Exposure Limit and do
    not cause olfactory fatigue.

3.  [Assigned Protection Factor]{.underline}: a value assigned by the
    Occupational Safety and Health Administration as the achievable
    ratio of average concentration of an air contaminant in the
    workplace air to the average concentration of that contaminant
    measured inside the respirator facepiece for a specific class of
    respirators. For example, a respirator with an assigned protection
    factor of 10 will have an air contaminant concentration inside the
    facepiece at least 10 times lower than the concentration outside the
    facepiece.

4.  [Demand]{.underline}: a mode of operation for supplied air
    respirators in which air flows into the respirator only when
    inspiration creates a lower pressure within the facepiece than the
    ambient atmospheric pressure.

5.  [Maximum Use Concentration (MUC)]{.underline}: the maximum
    concentration of an air contaminant in which a particular cartridge,
    canister, or filter respirator can be used. The MUC can be
    determined by multiplying the assigned protection factor for the
    respirator by the permissible exposure limit for the air contaminant
    in question. However, the MUC cannot exceed the lowest of either
    1000ppm; or the concentration of 10 times the Occupational Exposure
    Limit; or as specified by a substance-specific OSHA standard; or
    where the IDLH concentration for the chemical is lower than the
    calculated MUC.

6.  [Occupational Exposure Limit]{.underline}: The more stringent of:

    a.  the Permissible exposure level (PEL) for the hazardous chemical
        as listed in 29 CFR Part 1910, Subpart Z; or

    b.  the Threshold Limit Value (TLV) for the hazardous chemical
        assigned by the American Conference of Governmental Industrial
        Hygienists (ACGIH) in the latest edition of \"Threshold Limit
        Values for Chemical Substances and Physical Agents in the Work
        Environment\"; or

    c.  a NASA Permissible Exposure Level when published as a NASA
        Health Standard; or

    d.  where there is no PEL, TLV or NASA standard for the chemical, an
        exposure level based on available published scientific
        information such as Material Safety Data Sheets.

7.  [Resident]{.underline}: an employee who is employed by a Federal or
    contractor organization that is a tenant of KSC/CCAFS.

8.  [Respirator]{.underline}: any device worn by an individual and
    intended to provide the wearer with respiratory protection against
    inhalation of airborne contaminants or oxygen deficient atmospheres.

9.  [User Organization]{.underline}: any NASA, contractor, or tenant
    organization at KSC/CCAFS who calibrates air sampling equipment,
    performs air sampling, and/or provides for the analysis of air
    samples for industrial hygiene purposes.

Appendix B

Table 1

RESPIRATOR SELECTION CRITERIA FOR

AIR-PURIFYING RESPIRATORS

+-----------------------------------+-----------------------------------+
| [Air Purifying                    | [Assigned Protection              |
| Respirator]{.underline}^1^        | Factor]{.underline}               |
+-----------------------------------+-----------------------------------+
|                                   |                                   |
+-----------------------------------+-----------------------------------+
| Half Mask or Quarter Facepiece^2^ | 10                                |
+-----------------------------------+-----------------------------------+
|                                   |                                   |
+-----------------------------------+-----------------------------------+
| Full Facepiece                    | 50^3^                             |
+-----------------------------------+-----------------------------------+
|                                   |                                   |
+-----------------------------------+-----------------------------------+
| \*Filtering Facepiece             | 5                                 |
|                                   |                                   |
| (Dust Mask) ^4^                   |                                   |
+-----------------------------------+-----------------------------------+
|                                   |                                   |
+-----------------------------------+-----------------------------------+
| Powered Air-Purifying             |                                   |
+-----------------------------------+-----------------------------------+
| Tight Fitting Full Facepiece      | 50                                |
+-----------------------------------+-----------------------------------+
| Tight Fitting half mask^2^        | 50                                |
+-----------------------------------+-----------------------------------+
| Loose Fitting hood or helmet      | 25                                |
+-----------------------------------+-----------------------------------+

Notes:

1\. Air-purifying respirators may not be used in oxygen deficient
atmospheres.

2\. Only full-facepiece respirators are to be used in contaminant
concentrations that produce eye irritation.

3\. An APF of 50 is permitted only when QNFT is performed; when QLFT is
performed an APF of 10 is permitted.

4\. Nuisance dusts only.

Appendix B

Table 2

RESPIRATOR SELECTION CRITERIA FOR

ATMOSPHERE SUPPLYING RESPIRATORS

  ------------------------------------- ---------------------------------
  [Supplied Air-Respirator (SAR)        [Assigned Protection
  ^1^]{.underline}                      Factor]{.underline}

                                        

  Negative Pressure (demand)            

  \- Half mask                          10

  \- Full facepiece                     50

                                        

  Continuous flow                       

  \- Hood or helmet                     25

  \- Half mask                          50

  \- Full facepiece                     50

                                        

  Pressure Demand                       

  \- Half mask                          50

  \- Full facepiece                     1000

                                        

  Combination Full Facepiece Pressure   greater than 1000, and IDLH, or
  Demand SAR with Auxiliary             unknown concentrations
  Self-Contained Breathing Apparatus    

                                        

  Self-Contained Breathing              
  Apparatus(SCBA)^2^                    

  \- demand                             50

  \- pressure demand                    greater than 1000, and IDLH, or
                                        unknown concentrations
  ------------------------------------- ---------------------------------

Notes:

1\. Any supplied-air respirator may be used in an oxygen deficient
atmosphere where the oxygen content is above the oxygen deficient IDLH
limits.

2.  Only a full facepiece pressure demand SCBA or combination full
    facepiece pressure demand SAR with auxiliary self-contained air
    supply may be used in unknown IDLH or oxygen deficient IDLH
    atmospheres.

\*Appendix B

Table 3

+-----------------+---------------+-------------------+---------------+
| **Compressor    |               |                   |               |
| breathing air   |               |                   |               |
| evaluations**   |               |                   |               |
+-----------------+---------------+-------------------+---------------+
| compressor type | Co Alarm      | high temp alarm   | evaluate      |
+-----------------+---------------+-------------------+---------------+
| Oil LubRICATED  | Yes           | # Yes             | # 90 Days     |
+-----------------+---------------+-------------------+---------------+
|                 | Yes           | No                | 90 Days       |
+-----------------+---------------+-------------------+---------------+
|                 | No            | Yes               | 45 Days       |
+-----------------+---------------+-------------------+---------------+
|                 | No            | No                | 45 days       |
+-----------------+---------------+-------------------+---------------+
| OIL-FREE        | Yes           | Yes               | 90 Days       |
+-----------------+---------------+-------------------+---------------+
|                 | Yes           | No                | 90 Days       |
+-----------------+---------------+-------------------+---------------+
|                 | No            | Yes\*             | 90 Days       |
+-----------------+---------------+-------------------+---------------+
|                 | No            | No                | 45 Days       |
+-----------------+---------------+-------------------+---------------+

\*Auto shutoff device installed. Historic evaluations are satisfactory.