Project Number: AW-2225

Contract Number: TW-0839

December 1996

SPECIAL SPECIFICATION

SECTION 05990

[STAINLESS STEEL POOL LINER]{.underline}

[PART 1 - GENERAL]{.underline} [Page]{.underline}

1.01 Description of Work

1.02 References

1.03 System Description

1.04 Submittals

1.05 Quality Assurance

1.06 Delivery, Storage and Handling

PART 2 - PRODUCTS

2.01 Materials

2.02 Fabrication

PART 3 - EXECUTION

3.01 Examination

3.02 Field Assembly and Installation

SPECIAL SPECIFICATION

SECTION 05990

[STAINLESS STEEL POOL LINER]{.underline}

# PART 1 - GENERAL

## 1.01 [DESCRIPTION OF WORK]{.underline}

A. [This section includes]{.underline} all material, labor, equipment,
temporary protection and finishing for the fabrication and erection of
the stainless steel pool liner assembly as indicated on the Drawings,
including liner plates, angles, anchors, attachments and bracing
connections.

B. [Related Sections]{.underline}: Refer to the following sections for
related work:

1.  Division 1, Section "Environmental, Safety, and Health Requirements"

2.  Division 3, Sections "Cast-In-Place Concrete" and "Cast-In-Place
    Concrete Supplement" for concrete placement and special concrete
    grout requirements.

3.  Division 5, Section "Metal Fabrications" for general fabrication
    requirements.

## 1.02 [REFERENCES]{.underline}

A. [American Society of Mechanical Engineers (ASME)]{.underline} Boiler
and Pressure Vessel Code Section VIII Rules for Construction of Pressure
Vessels, Division 1.

B. [American Society of Testing and Materials (ASTM)]{.underline}

A 167 Standard Specification for Stainless and Heat-Resisting
Chromium-Nickel Steel Plate, Sheet and Strip.

A 276 Standard Specification for Stainless and Heat-Resisting Steel Bars
and Shapes

A 380 Standard Practice for Cleaning and Descaling Stainless Steel
Parts, Equipment, and Systems

E 165 Standard Recommended Practice for Liquid Penetrant Inspection

C. [American Welding Society (AWS)]{.underline}

C 5.4 Recommended Practices for Stud Welding

D 1.1 Structural Welding Code-Steel

D 1.3 Structural Welding Code-Sheet Steel

## 1.03 [SYSTEM DESCRIPTION]{.underline}

A. [General]{.underline}: Provide a corrosion-resistant, watertight
stainless steel liner for the pool that accommodates the related
plumbing, casket manipulation and grating.

## 1.04 [SUBMITTALS]{.underline}

A.  [General]{.underline}: Submit the following in accordance with
    Conditions of Contract and Division 1, Section "Descriptive
    Submittals."

B.  [Product Data]{.underline}: Submit product data and manufacturer's
    specifications and installation instructions for the following
    products. Include laboratory test reports and mill certificates to
    show compliance with specifications and standards.

C.  Stainless steel plate

D.  Stainless steel shapes

E.  Welding electrodes and studs

F.  Preweld and postweld cleaning equipment and supplies

G.  Silica sand for sandblasting operations

H.  [Shop Drawings]{.underline}: Submit shop drawings, including
    complete details and schedules for shop fabrication of subassemblies
    of the pool liner, and details, schedules, procedures and diagrams
    showing the methods and sequence of field assembly.

I.  The Contractor must submit any proposed alternate layout for the
    pool liner assembly that uses plates of different dimensions and/or
    joint locations that vary from those shown on the drawings to the
    Sandia Delegated Representative (SDR) for review and approval.

J.  Submit complete drawings showing the sizes, locations and
    connections for the internal formwork, shoring and bracing to be
    used for the pool liner. Submit calculations supporting the design
    of the formwork and shoring system, signed and stamped by a
    Professional Engineer registered in the state of jurisdiction.

K.  [Quality Control]{.underline}:

L.  Submit qualification documents for each welding procedure. Documents
    shall conform to the requirements of AWS D1.3, Structural Welding
    Code-Sheet Steel and shall include Procedure Qualification Test
    Record and Welding Procedure Specification for each welding
    procedure and Welder and Welding Operator Qualification Test Record
    for each welder and welding procedure. These documents shall be
    signed by an AWS certified inspector.

    Provide certification that all welders to be employed in the work
    have satisfactorily passed qualification tests for the material and
    welding procedures used for the pool liner. The qualification tests
    shall be administered by an AWS certified welding inspector in
    accordance with the applicable provisions of AWS D1.1, Structural
    Welding Code-Steel, and AWS D1.3, Structural Welding Code-Sheet
    Steel, within a period of time not to exceed 12 months prior to the
    welding work.

2\. Submit test reports conducted on all welded connections of linear
joints and of liner attachments. Include data on the type(s) of test
conducted and test results. Reports must document the locations of every
test and retest in such a manner that the location can be readily
verified by others.

3\. Provide certification that the pool liner assembly is watertight and
leak free.

E.  [Provide certification]{.underline} that all materials are
    asbestos-free and lead paint-free.

F.  [Provide certification]{.underline} of liner manufacturer's
    experience.

G.  [Provide certification]{.underline} that the completed liner is
    watertight and leak free.

## 1.05 [QUALITY ASSURANCE]{.underline}

A.  [Manufacturer Qualifications]{.underline}: The manufacturer of the
    liner shall have a minimum of five years experience in the
    construction of watertight tanks and/or pressure vessels in
    accordance with ASME rules end of the use of stainless steel.

B.  [Regulatory Requirements]{.underline}: Comply with the provisions of
    the following unless otherwise noted:

C.  AWS C5.4, Recommended Practices for Stud Welding

D.  AWS D1.1, Structural Welding Code-Steel

E.  AWS D1.3, Structural Welding Code-Sheet Steel

F.  [Certification]{.underline}: Employ an independent testing
    laboratory acceptable to the SDR to perform inspection of all welded
    connections, to perform tests, to prepare test reports and to
    certify that the finished pool liner assembly is watertight and leak
    free. Welding inspected shall be certified by AWS. Nondestructive
    testing of welds shall be performed by an ASNT level 2 technician.

## 1.06 [DELIVERY, STORAGE AND HANDLING]{.underline}

A. [Packing and Shipping]{.underline}: Deliver materials and assemblies
to ensure uninterrupted progress of work. Pack, brace and handle
assemblies in such a manner to prevent distortion of each assembly or
it's parts or contamination by ferrous materials.

B. [Storage and Protection]{.underline}: Store materials and assemblies
to permit easy access for inspection and identification. Protect liner
assemblies and packaged materials from corrosion, contamination and
deterioration.

# PART 2 - PRODUCTS

## 2.01 [MATERIALS]{.underline}

A.  [Stainless Steel Plates, Sheets and Strips]{.underline}: AISI Type
    304 and conforming to ASTM A167.

B.  [Stainless Steel Bars and Shapes]{.underline}: AISI Type 304 and
    conforming to ASTM A276.

C.  [Welding Rods for Stainless Steel]{.underline}: AWS E308L-15,
    E308L-16, ER308-15 or ER308-16.

## 2.02 [FABRICATION]{.underline}

A.  [General]{.underline}:

1\. The actual methods and procedures selected for the fabrication of
the stainless steel pool liner is the contractor's responsibility
provided the result meets this specification. However, the following is
offered as a general guide:

2.  The pool liner is fabricated as two or more sub-assemblies in the
    shop including all internal bracing. The overall size of the
    sub-assemblies is a function of the shop's capabilities and
    transportation and handling considerations.

3.  The sub-assemblies are then shipped to the site. At the site, the
    various sub-assemblies are welded together to form the completed
    pool liner assembly.

4.  Following the completion of the pool liner, the field welds are
    tested for watertightness.

5.  Notify the SDR prior to the start of any shop fabrication and
    develop a schedule for in-shop inspections.

6.  Fabricate the stainless steel pool liner assembly in accordance with
    ASME Code and as indicated on the final shop drawings. Provide
    bracing to prevent deformation of the liner during assembly,
    transportation and handling.

7.  Properly mark and match-mark sub-assemblies of the pool liner for
    field assembly. Fabricate for a delivery sequence which will
    expedite field welding and minimize field handling of the
    sub-assemblies.

8.  [Welded Construction]{.underline}: Comply with AWS Code for
    procedures, appearance and quality of welds and of methods used in
    correcting welding work. Avoid overheating by limiting electrode
    size and welding current and/or by welding on a chilled base.

9.  [Pre-weld Cleaning]{.underline}: Clean the surfaces to be welded and
    the adjacent surfaces for at least ½ inch (12.7mm) on each side.
    These surfaces must be completely cleansed of all hydrocarbon and
    other contaminants, such as cutting fluids, grease, oil, waxes and
    primers, by suitable solvents. Acceptable pre-weld cleaning
    techniques include the following:

10. Stainless steel wire brushes that have not been used for any other
    purpose;

11. Blasting with non-ferrous sand or grit;

12. Machining and grinding using a suitable tool and chloride-free
    cutting field; and

13. Pickling with 10 to 20 percent nitric acid solution.

14. [Postweld Cleaning]{.underline}: Thoroughly remove all welding slag
    and surface discoloration by stainless steel chipping and wire
    brushing or mechanical polishing with non-ferrous tools.

15. [Joint Testing]{.underline}: Test all welded joints with the liner
    in its final position, prior to concrete placement, using the dye
    penetrant (ASTM E 165) or other non-destructive method(s) approved
    by the SDR. Certify that the pool liner assembly is completely
    watertight and leak free.

# PART 3 - EXECUTION

## 3.01 EXAMINATION

A.  Erector must examine the area and conditions under which the pool
    liner is to be installed and notify the Contractor in writing of
    conditions detrimental to the proper and timely completion of the
    work. Do not proceed with the work until unsatisfactory conditions
    have been corrected in a manner acceptable to the Erector.

## 3.02 [FIELD ASSEMBLY AND INSTALLATION]{.underline}

A.  [Temporary Shoring and Bracing]{.underline}: Provide temporary
    shoring and bracing members as required with connections of
    sufficient strength to bear imposed loads. Provide temporary guy
    lines, shoring and bracing to achieve proper alignment of the liner
    sub-assemblies as the field welding proceeds.

B.  [Temporary Planking]{.underline}: Provide temporary planking and
    working platforms as required by codes, OSHA regulations Section
    "Environmental, Safety and Health Requirements" and as necessary to
    effectively complete the work.

C.  [Protect]{.underline} the area around the liner from flooding. Do
    not allow surface waters to flow into the site and pump out any
    accumulations of rainwater promptly.

D.  [Field Installation]{.underline}:

E.  The methods and procedures used for installing the pool liner and
    constructing the walls for the pool is the contractor's
    responsibility, and the requirements in Sections "Cast-In-Place
    Concrete" and "Cast-In-Place Concrete Supplement" shall apply.
    However, the following procedures are provided as a general guide
    for installing the liner and placing the concrete for the pool
    walls. This procedure assumes the following condition:

F.  The concrete foundation for the pool is complete, with the dowels
    projecting upward from the top surface.

G.  An adequate number of the concrete pads used to support the pool
    liner assembly have been placed on top of the concrete foundation.

H.  The pool liner assembly is complete at the site, and has been tested
    and certified that it is watertight and leak free.

I.  Assemble the complete pool liner assembly on top of the concrete
    support pads. Verify that the liner is in the correct position and
    elevation, and is adequately supported. Level and plumb the liner
    assembly to within the tolerances noted on the drawings.

J.  Install the reinforcing bars for the pool wall for the first pour.
    See Sections "Cast-In-Place Concrete" and "Cast-In-Place Concrete
    Supplement."

K.  Install the external formwork for the first pour.

L.  Internal formwork:

M.  The internal bracing for the pool liner shown on the drawings is NOT
    intended to support the pressures from the concrete during the
    placement of concrete in the pool wall. The contractor is
    responsible for providing adequate forming, shoring, and bracing to
    ensure the pool liner is NOT deformed during the concrete placement
    of the pool wall.

N.  Install the internal formwork, shoring and bracing inside the pool.

O.  Fill the pool liner with water to a depth of approximately 3 feet
    from the bottom of the pool. Verify that there are no leaks through
    the liner. Repair as necessary to ensure that there are NO leaks.

P.  Place the 4 inches of special concrete grout between the top of the
    concrete foundation and the bottom of the pool liner. (Refer to
    Section "Cast-In-Place Concrete Supplement.") Place the special
    concrete grout slowly from one side of the pool only until it has
    flowed under and completely filled the space between the top of the
    concrete foundation and the bottom of the pool liner.

Q.  Immediately after placing the special concrete grout under the
    bottom liner, place a layer of normal weight concrete in the pool
    wall to a height of 18 inches above the top of the pool foundation.

R.  Heavily rake all around the top of this pour using the detail shown
    on the drawings. Allow the concrete to cure for at least 24 hours.

S.  At the contractor's option, the water in the pool may be pumped out
    at this time.

T.  Install additional reinforcing bars and external formwork as
    required, and place the remaining concrete for the pool walls.
    Placement rates of about 6 feet per day are typical.

U.  Remove the formwork and bracing in accordance with Section
    "Cast-In-Place Concrete."

V.  Remove the internal stainless steel bracing and lifting lugs from
    inside the pool, and grind the welds smooth.

W.  Pump out the water in the pool if not already done so earlier.

E. [Backfilling]{.underline}: Do not commence backfilling operations
against the pool wall until the strength of the concrete in the pool
wall and beams has reached 100% of its specified 28 day strength.

F. [Safety]{.underline}: Appropriate safety devices and equipment, which
meet all OSHA and Section "Environmental, Safety, and Health
Requirements," shall be installed and maintained over and around the
pool. Note that work within the pool may qualify as a confined space.

G. [Cleaning and Passivating]{.underline}:

1.  All internal bracing and lifting lugs shall be removed and the welds
    ground smooth.

2.  Prior to the installation of the elevator equipment, the entire pool
    liner and welds shall be cleaned and passivated using the
    sandblasting method in accordance with ASTM A380.

3.  Either dry or wet sandblasting may be used.

4.  Provide methods to keep the dust from the sandblasting operations
    from accumulating on the inside surfaces of the shields.

5.  Use only silica sand that has been chemically analyzed and found to
    be iron-free.

6.  Sandblasting shall remove all contaminates and provide a white metal
    blast finish with a profile of 1 to 2 mils.

7.  Protect the cleaned and sandblasted liner from contaminates such as
    nails, mild steel, or unprotected steel scaffolding.

END OF SECTION