section 43 4113

GAs and Liquid PRESSURE VESSELS

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LANL MASTER SPECIFICATION

This template must be edited for each project.  In doing so, specifier
must add job-specific requirements.  Brackets are used in the text to
indicate designer choices or locations where text must be supplied by
the designer.  Once the choice is made or text supplied, remove the
brackets.  The specifications must also be edited to delete
specification requirements for processes, items, or designs that are not
included in the project \-- and specifier's notes such as these.  To
seek a variance from requirements in the specifications that are
applicable, contact the Engineering Standards Manual Mechanical
[POC](http://engstandards.lanl.gov/engrman/6mech/htmls/mechnew2.htm).
Please contact POC with suggestions for improvement as well.\
\
When assembling a specification package, include applicable
specifications from all Divisions, especially Division 1, General
requirements.\
\
The specification was prepared by an organization operating under a
quality assurance program that meets the requirements of 10 CFR 830
(suitable for ML-1 through ML-4 projects). Implementation of this
specification requires modification to the specification to meet
project-specific requirements. Responsibility for application of this
specification to meet project-specific requirements lies with the
organization modifying or implementing the specification. The
organization modifying the specification shall apply a graded approach
to quality assurance based on the management level designation of the
project. When this specification is used with nuclear facilities subject
to 10 CFR 830, modification to this specification must be performed by
an individual or organization operating under a quality assurance
program that meets the requirements of that CFR.

This specification is a general specification covering a wide range of
LANL pressure vessel applications. It is intended to be used for
design/build procurements of pressure vessels.

This specification is applicable both to new acquisitions and to
modifications or repair work to existing pressure vessels.

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1.  general

    1.  section includes

        A.  This Section covers the requirements of closed vessels
            containing pressurized fluids which fall under the
            requirements of ASME Boiler & Pressure Vessel Code (B&PVC),
            Section VIII, Division 1, Rules for Construction of Pressure
            Vessels. These are "unfired" pressure vessels, though they
            may operate at elevated temperatures within the limits
            allowed by Section VIII, Division 1, of the ASME B&PVC.

        B.  This specification establishes the technical requirements
            for the design, materials of construction, fabrication,
            testing, shipment, and quality assurance (QA) of pressure
            vessels and their supports, components, and appurtenances.

        C.  The technical requirements of this specification are
            applicable to containers used for the containment of
            pressure, either internal or external.

        D.  For pressure vessels containing toxic fluids, where the
            potential for personnel exposure is significant and a single
            exposure to a small leakage can cause serious harm, the
            requirements of ASME B31.3, Category M, also apply although
            outside the Code's scope.

        E.  The following is a summary of supplier responsibilities
            described in this specification:

            1.  Design and fabricate pressure vessels in accordance with
                this specification, ASME BPVC, Section VIII, Division 1,
                Rules for Construction of Pressure Vessels, the
                Supplier's LANL-approved drawings, and other referenced
                documents.

            2.  Furnish design data required by this specification to
                document design of the pressure vessel.

            3.  Procure equipment, materials, or supplies to complete
                the work, unless otherwise stated.

            4.  Test and inspect as required by this specification, ASME
                B&PVC, Section VIII, Division 1, and ASME B31.3,
                Category M (if applicable).

            5.  Furnish the data required by this specification to
                document that required tests and inspections have been
                performed.

            6.  Pressure vessel is to be stamped in accordance with ASME
                B&PVC, Section VIII, Division 1, to show compliance with
                Code requirements.

            7.  Package, ship, and deliver pressure vessel.

            8.  Provide LANL full access to the facility for performing
                random or scheduled inspections and/or surveillance of
                work performed.

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Edit LANL Sections listed below for applicability to meet the project
requirements associated with the pressure vessel to be designed and
fabricated. Add other Sections if needed.

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2.  related sections

    A.  Section 01 3300, Submittal Procedures

    B.  Section 01 2500, Substitution Procedures

    C.  Section 13 4800, Sound, Vibration, and Seismic Control

    D.  Section 05 1000, Structural Metal Framing

    E.  Section 05 1305, Stainless Steel

3.  References

    Codes, specifications, and standards referred to by number or title
    form a part of this specification to the extent required by the
    following references. Use codes, specifications, and standards
    referenced below of the latest revision at the time of award of
    Subcontract, unless otherwise stated below.

    A.  10 CFR 830.122: Nuclear Safety Management, Quality Assurance
        Criteria.

    B.  ASME Boiler & Pressure Vessel Code (B&PVC), Section II -- Part
        C: Material Specifications -- Welding Rods, Electrodes, and
        Filler Metals.

    C.  ASME B&PVC, Section VIII -- Division I: Rules for the
        Construction of Pressure Vessels.

    D.  ASME B&PVC, Section IX: Welding and Brazing Qualifications.

    E.  ASME B31.3, Code for Pressure Piping: Process Piping, Category
        M.

    F.  ASME B16.5: Pipe Flanges and Flanged Fittings.

    G.  ASME B16.47: Large Diameter Steel Flanges: NPS 26 Through NPS
        60.

    H.  DOE-STD-1020: Natural Phenomena Hazards, Design and Evaluation
        Criteria for Department of Energy Facilities.

    I.  DOE-STD-1021: Natural Phenomena Hazards, Performance
        Categorization Guidelines for Structures, Systems, and
        Components.

    J.  LANL Engineering Standards Manual.

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The author of the targeted specification is required to define many
aspects of the pressure vessel design, including management level
designation of the pressure vessel. Following the designation of
management level, interpret the requirements for the designated
management level and define those requirements in this specification.
Ensure that the pressure vessel meets the requirements of Requirements
Notice 0803, ESM Chapter 17 (future), and LIR402-1200-01, Pressure,
Vacuum, and Cryogenic Systems.

Perform the following analyses or define requirements for the following
within the specification:

-   Establish the service conditions and design requirements for the
    pressure vessel, also considering factors associated with startup,
    normal operation, and shutdown. Determine pressure vessel operating
    pressures and temperatures, and pressure vessel design pressures and
    temperatures.

-   Determine the materials of construction of the pressure vessel, as
    required by the service conditions.

-   Consider whether service conditions may require corrosion allowances
    beyond those specified by ASME B&PVC, Section VIII, and specify
    those allowances to the Supplier.

-   Determine if the pressure vessel is to contain lethal substances. If
    so, specify the additional requirements for the pressure vessel as
    stated in ASME B&PVC, Section VIII, Division 1. Also, for pressure
    vessels and attached piping containing toxic fluids, where the
    potential for personnel exposure is significant and a single
    exposure to a small leakage can cause serious harm, the requirements
    of ASME B31.3, Category M, also apply.

-   Depending on service conditions\--and thus the required tensile
    strength of the pressure vessel shell material\--determine if
    postweld heat treatment beyond the requirements of ASME B&PVC,
    Section VIII, Division 1, will be required. If so, specify the
    postweld heat treatment needed.

-   For pressure vessels operating at elevated temperatures, within the
    limits allowed by ASME B&PVC, Section VIII, Division 1, determine
    whether there is a need for piping, valves, instruments, and
    fittings to perform the functions covered by PG-59 thru PG-61 of
    ASME B&PVC, Section I.

-   Determine whether the pressure vessel may be exempt from the
    requirements of ASME B&PVC, Section VIII, Division 1, or whether it
    falls under the scope of another Section of ASME Code. (Pressure
    vessels exempt from the requirements of Section VIII may still be
    stamped with the Code "U" Symbol, if desired, as long as it meets
    all applicable requirements of the Code.)

-   Pressure vessel is to be stamped in accordance with ASME B&PVC,
    Section VIII, Division 1, to show compliance with Code requirements.

-   Provide a data sheet for the pressure vessel, and a conceptual
    sketch or drawing of the pressure vessel with the specification to
    summarize requirements and improve clarity. (Refer to Attachment 1.
    In some cases, a larger sketch than the one on the data sheet may be
    needed for clarity.)

-   Determine whether the pressure vessel will require any coatings,
    linings, or insulation. If so, specify or allow the Supplier to
    recommend a system for LANL approval.

    Before beginning pressure vessel procurement, review the designated
    installation site for any building, facility floor, concrete slab,
    or soil loading limitations. Determine what foundation structures
    may be needed to support the vessel. Determine if there are any
    clearance problems in moving the pressure vessel to its installation
    site.

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1.  System Description

    A.  General Design Requirements

        1.  For pressure vessel operating conditions, design data, and
            vessel configuration refer to Attachment 1, Pressure Vessel
            Data Sheet.

        2.  Design and fabricate pressure vessels in accordance with
            this specification, ASME B&PVC, Section VIII, Division 1,
            the Supplier's LANL-approved drawings, and ASME B31.3,
            Category M (where applicable) and applicable regulations.

        3.  If there is a conflict among the above listed requirements,
            compliance with ASME B&PVC, Section VIII, Division 1, and
            applicable regulations will take precedence. Bring any
            conflicts to LANL's attention for resolution.

        4.  LANL will review and comment on design calculations and
            drawings, unless LANL chooses to waive this right. The LANL
            review does not release the supplier from responsibility to
            design and fabricate the pressure vessel in accordance with
            ASME B&PVC, Section VIII, Division 1, applicable
            regulations, and this specification.

        5.  Stamp pressure vessels per ASME B&PVC, Section VIII,
            Division 1.

    B.  Shell and Head Design Requirements

        1.  General

            a.  Unless specified otherwise by LANL, design pressure
                vessels for a minimum external pressure of 2.5 psig at
                300 ºF.

            b.  Obtain LANL approval for use and design of internal
                stiffeners for higher external pressure applications.

            c.  Conical transition sections shall have knuckles, unless
                specified otherwise.

        2.  Pressure Retaining Joints

            a.  Identify joints that are to be welded from one side
                only.

            b.  Obtain LANL approval of proposed weld joint
                configurations prior to fabrication, unless LANL chooses
                to waive this requirement.

    C.  Nozzle & Manway Requirements

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Define the piping systems that will interface with the pressure vessel
and specify the necessary nozzles and connections required on the
pressure vessel. Specify any maintenance access openings (manways), or
other large openings, needed on the pressure vessel. Include small
penetrations, such as pressure and temperature monitoring ports. Check
whether level monitoring instrumentation is required. Also specify
plugged spare penetrations for possible future use, if desirable.
Provide a data sheet with nozzle schedule and a conceptual sketch to
clarify pressure vessel configuration (Refer to Attachment 1).

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1.  Unless specified otherwise, external nozzle flanges are to conform
    to ASME B16.5 or ASME B16.47, as applicable.

2.  External flanges are to be weld-neck type attached with
    full-penetration welds. Obtain LANL approval before using other
    types of flanges.

3.  Make nozzles that are used as drains flush with the vessel interior
    surface.

4.  On vessels that are supported by a skirt, extend the flange of
    bottom head nozzles outside of the skirt for access.

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Provide the Supplier with a reasonably detailed sketch of the pressure
vessel that will serve as a baseline for the design. Provide interface
and other information important to LANL requirements that would be
unknown to the Supplier. As part of the sketch, determine and specify
the material used for the pressure vessel support structure to meet LANL
facility requirements. Determine and specify other support stand
requirements such as required strength, height, field location
requirements of anchoring, etc.

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D.  Structural/Supports

    1.  Pressure Vessel Supports

        a.  Unless otherwise specified by LANL, design all vessels as
            self-supporting units, including legs, skirts, saddles,
            etc., as necessary to provide the required vessel elevation.
            Consider wind, snow, and seismic loadings in support design,
            depending on installation method and location. Allow for
            thermal expansion and thermal expansion loads during support
            design. Assume that a field hydrostatic test will occur
            where the vessel will be filled completely full of water,
            and account for this extra weight in the support design.
            Also allow for temporary erection loads on pressure vessel
            structure.

        b.  Support pressure vessels by welded or bolted leg and brace
            arrangements, mounting pads, skirts, or saddles, depending
            on vessel size and configuration. Horizontal pressure
            vessels are to be supported with two saddles, minimum 120
            degree saddle angle. If bearing plates are used, do not
            locate on top of girth or long seam welds.

        c.  Design and fabricate pressure vessel supports and
            attachments in accordance with good structural design and
            practice, and ASME B&PVC, Section, VIII, Division 1,
            Appendix G, Suggested Good Practice Regarding Piping
            Reactions and Design of Supports and Attachments.

        d.  Design pressure vessel supports to meet DOE Performance
            Category (PC) requirements for the \[insert proper
            category\] category.

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Determine and specify pressure vessel lifting requirements, including
any LANL-specific hoisting and rigging requirements for the pressure
vessel design.

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2.  Lifting Points -- Pressure Vessel Structure

    a.  Incorporate lifting features into the pressure vessel design as
        required. Design and position lifting features to prevent any
        strain or distortion of the pressure vessel. Design lifting
        features to accept lifting by forklift, crane, or other
        appropriate device, and label these features appropriately as
        lifting points.

    b.  If lifting lugs are not provided as a feature of the design,
        indicate suitable lifting points on the main pressure vessel
        framework. If necessary, provide external strong-backs or other
        bracing devices.

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Determine whether a seismic analysis is required on the pressure vessel
and to what extent. Determine and specify the applicable seismic
performance category (PC) of the pressure vessel. Where applicable
specify floor response spectra, peak accelerations, damping ratios, etc.
necessary for the supplier to perform seismic analyses.

Depending upon the quantity and characteristics of the material being
contained, design pressures and temperatures, and PC category, design
pressure vessels and attached process piping to withstand a design basis
earthquake (DBE).

Consult the LANL Engineering Standards Manual Structural chapter to
determine and specify the performance category requirements of the
pressure vessel including the performance and leak integrity of the
pressure vessel both during and after a design basis earthquake (DBE).

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3.  Seismic Design

    a.  Design pressure vessel to withstand a design basis earthquake
        (DBE) as specified by LANL. The performance category of the
        pressure vessel is PC-\[X\].

    b.  Perform seismic analysis of the pressure vessel in accordance
        with the applicable performance category requirements, and as
        stated in DOE-STD-1020, DOE-STD-1021, and the LANL Engineering
        Standards Manual, Chapter 5, Structural.

    c.  If the mass and center of mass of the fluid inside the pressure
        vessel fluctuates, use the maximum possible fluid level (e.g.,
        full) of the heaviest fluid that will be used in the pressure
        vessel for the seismic calculation. Also check
        "splashing/sloshing" inertial loads due to a partially full
        tank. Account for valves and accessories attached to vessel.

    d.  Allow for a possible accidental offsetting of the center-of-mass
        by \[5%\] of the plan dimensions from the calculated location,
        and a potential increase in weight of \[25%\] (valves/equipment
        attached to tank may change).

    e.  Refer also to LANL Section 13 4800, Sound, Vibration and Seismic
        Control.

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2.  submittals

    A.  Provide submittals in accordance with the requirements of LANL
        Section 01 3300, Submittal Procedures.

        1.  Provide reference to LANL Project I.D. Number, LANL
            Subcontract Number, Pressure Vessel Number, Pressure Vessel
            Title, and Drawing Number on correspondence. LANL may choose
            to waive some of these submittals if the Supplier has been
            granted prior approval by LANL for recent Subcontract
            submittals.

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Note to Specification Author: Add or delete project specific
requirements as required.

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B.  Drawings, Calculations, and Supporting Data

    1.  Submit design drawings, calculations, and supporting data prior
        to beginning pressure vessel fabrication. LANL will review and
        comment on design calculations and drawings, unless LANL chooses
        to waive this right. The LANL review does not release the
        supplier from responsibility to design and fabricate the
        pressure vessel in accordance with ASME B&PVC, Section VIII,
        Division 1, applicable regulations, and this specification.
        Include assumptions and input/output data with the calculations.
        If computer calculations are performed, include the name of the
        calculation program and the version number.

C.  Quality Assurance/Quality Control

    1.  Submit an uncontrolled copy of his QA manual for LANL approval.
        LANL may waive this requirement if the Supplier's QA program has
        been previously reviewed and approved.

    2.  Notifications: Notify LANL at least 7 days in advance for a Weld
        Fit-up Inspection and also for Acceptance Testing/Final
        Inspection, unless waived by LANL.

    3.  Submit a Lower Tier Services Plan if outside subcontractors will
        perform some of the work. Provide LANL with the name, address,
        telephone number, and point of contact for outside services that
        the supplier intends to use on this project. Identify the
        specific work requirements of this specification that will be
        performed by those outside services.

    4.  Submit a Fabrication Schedule.

    5.  Material Control Procedure

        a.  Prior to fabrication, submit for LANL approval a material
            control procedure to be used in the execution of the work.
            Describe the control methods and traceability documentation
            in the procedure used by the supplier to handle and monitor
            the use of controlled materials, such as stainless steel and
            welding filler rod. Address in the procedure items such as
            procurement controls, segregation of materials, and
            traceability of materials from receipt at the shop through
            processing and final assembly.

        b.  Heat Numbers: Note heat numbers on weld maps using
            low-chloride content marking pens on each piece part and
            transfer the material identifications to the as-built
            drawings.

    6.  Fabrication Procedures: Submit a copy of

        a.  Welding Procedure Specifications (WPS),

        b.  Welding Procedure Qualification Record (PQR),

        c.  Welding & NDE Personnel Listing,

        d.  Liquid Penetrant Test Procedure,

        e.  Radiographic Test Procedure, and

        f.  Leak Test Procedure.

    7.  Certifications: Submit a copy of

        a.  Welder Performance Qualification Records,

        b.  NDE Personnel Certifications,

        c.  Material certifications for steel, weld filler materials,
            and the chloride content of materials used in fabrication of
            stainless steel, and

        d.  Supplier's ASME "Certificate of Compliance," in accordance
            with UG-120, of ASME B&PVC, Section VIII, Division 1.

    8.  Test Reports: Submit a copy of

        a.  Liquid Penetrant Test Report,

        b.  Radiographic Test Report, and

        c.  Hydrostatic Leak Test Report.

    9.  Shipping Submittals: Submit a copy of

        a.  Supplier's vessel Cleaning Procedure,

        b.  Supplier's Packaging Procedure, and

        c.  Bill of Lading with shipment.

D.  Nonconformances

    1.  Submit a written request to LANL for any proposed technical
        changes, exceptions, and/or deviations to this specification or
        other Subcontract documents. Do not implement proposed changes,
        exceptions, or deviations until the LANL Subcontract Technical
        Representative (STR) provides written approval.

    2.  Conflicts: Notify LANL as soon as possible in the event of
        conflicts among the specifications, drawings, and/or the
        manufacturer's recommended processes or instructions.

    3.  Ensure that any substitutions are in conformance with LANL
        Section 01 2500, Substitution Procedures.

E.  Warranty: Supplier is to guarantee the pressure vessel and
    associated equipment at design conditions and warrant that materials
    and workmanship, plus apparatus supplied (if any), are in accordance
    with subcontract document requirements.

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3.  Quality assurance

    A.  The Supplier's QA program shall control the combination of
        design, materials, preparation, fabrication, inspection,
        testing, cleaning, packaging, and shipping that have to be done
        correctly to ensure the production of an acceptable finished
        product and compliance with 10 CFR 830.122.

    B.  Pressure vessels shall be furnished by a firm qualified,
        accredited, and regularly engaged in this type of work for a
        period of no less than \[3\] years. Supplier shall maintain shop
        and facilities suitable for fabrication of pressure vessels.
        Supplier shall maintain a Quality Control Program that complies
        with ASME B&PVC, Section VIII, Appendix 10.

4.  Delivery, Storage & Handling

    A.  Shipping Preparation: Mode and method of transporting, and the
        extent of pressure vessel assembly, are to be mutually agreed on
        by the Supplier and LANL prior to fabrication and delivery of
        the vessel. The LANL approved packaging procedure will be used.
        For safety considerations, a means of pressure relief is to be
        provided on the pressure vessel during shipping to prevent any
        pressure buildup and/or to equalize pressure due to elevation or
        temperature changes.

    B.  Shipping & Receiving: Provide LANL with a copy of the bill of
        lading concurrent with the shipment. Properly and clearly
        describe the shipment on the bills of lading. At final
        destination LANL will inspect the shipment as necessary to
        ensure that received items have not been damaged during shipment
        and that required items and supporting documentation have been
        received. The receipt inspection by LANL at Los Alamos
        constitutes final acceptance.

5.  site conditions

    Design pressure vessels and associated components for a design
    altitude of 7,500 feet above sea level. Design pressure vessels and
    associated components for a design ambient temperature appropriate
    to the installation location.

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2.  products

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Establish an Approved Vendors List for pressure vessel vendors in
accordance with the appropriate Quality Assurance Program Plan.
Specification authors will select vendors from the approved vendors
list. For a listing of currently approved vendors, contact PO Division.

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1.  manufacturers

    A.  List companies from an approved vendors list that specialize in
        designing and manufacturing the products specified in this
        Section with suitable documented experience of performing
        similar work.

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Determine and specify the type of material to be used for the pressure
vessel shell, nozzles, connections, hatches, supports and other
appurtenances. Specify material based upon application and compatibility
with the process and corrosive environments. Some structural shapes may
be difficult to obtain in certain materials, without special order
(allow for longer lead times).

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2.  Materials

    A.  Provide materials complying with ASME B&PVC, Section II,
        "Materials."

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Determine and specify the type, thickness and configuration of pressure
vessel linings, coatings where needed or request Supplier's
recommendation for LANL approval.

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B.  Protective Linings and Coating (Where Required)

    1.  Pressure vessel Supplier shall evaluate the design conditions
        supplied by LANL and determine whether vessel linings and/or
        coatings may be required. If so, Supplier shall recommend the
        preferred lining and/or coating system to LANL for concurrence
        and approval.

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3.  fabrication

    A.  Protect stainless steel against carbon steel contamination from
        tooling and fixtures during fabrication.

    B.  Exercise control during stages of fabrication to minimize
        exposure of stainless steel to contaminants, in particular any
        chloride that might cause stress-corrosion cracking. Avoid
        chloride-bearing compounds; however, if used, completely remove
        by thorough cleaning. Do not use compounds, liquids, or markers
        with more than 250 ppm of chloride content by weight on
        stainless steel surfaces.

    C.  Welding: Ensure that welders, welding operators, and tackers are
        qualified in accordance with ASME B&PVC, Section IX, Welding &
        Brazing Qualifications. Use welding procedures per ASME B&PVC,
        Section IX, Welding & Brazing Qualifications.

    D.  Surface finishes: Exercise care to prevent scratching, abrading,
        nicking, and denting of the pressure vessel during receiving,
        storage, fabrication, and handling.

    E.  Cleaning:

        1.  Submit for LANL review and approval a cleaning procedure
            describing the methods, materials, controls, and inspections
            to be used to perform pressure vessel cleaning operations.
            Provide a procedure that addresses cleaning pressure vessel
            surfaces to remove dirt, oils, and marking pen ink. Include
            a specification of the solvents and/or detergents that will
            be used.

        2.  After fabrication is completed and before testing and
            inspection, clean, de-scale, and degrease the pressure
            vessel and associated components.

        3.  Clean exterior surfaces, but take particular care to clean
            the inside of the vessel thoroughly. Methods may include
            cleaning by hot water spray, etc. Ensure pressure vessel
            cleanliness meets the approval of LANL at the time of the
            final inspection. If a detergent is needed to ensure
            thorough cleaning, use a detergent that is than 250 ppm of
            chloride content by weight for stainless steel. Use fresh
            water for final wash and rinse. Ensure the detergent, wash,
            and rinse contains less than 250-ppm chloride content. After
            the water rinse, dry inside surfaces using heat, lint-free
            cloth, or other means to ensure cleanliness.

        4.  If heat is used for drying stainless steel vessels, do not
            allow metal temperature to rise above 250ºF and use
            de-ionized water for the final rinse.

4.  Source quality control

    A.  Shop acceptance tests:

        1.  Perform inspection and testing of the completed pressure
            vessel in accordance with the requirements of ASME B&PVC,
            Section VIII, Rules for Construction of Pressure Vessels,
            and ASME B31.3, Category M (if applicable).

        2.  Provide the test location, equipment, instrumentation of
            certified accuracy, and any supplementary temporary
            connections and auxiliary parts necessary to fully execute
            the tests.

        3.  Provide test personnel qualified to conduct, record, and
            verify test results. Submit the test results as part of the
            QA Document Package in accordance with LANL Section 01 3300,
            Submittal Procedures.

        4.  Provide LANL with a minimum seven (7) working day advance
            written notice of shop acceptance tests.

    B.  Weld Inspection

        1.  Radiography: Unless specified otherwise, the minimum
            radiography required is spot radiography in accordance with
            UW-52 of ASME B&PVC, Section VIII, Division 1.

        2.  Magnetic Particle and Liquid Penetrant Examination: If
            specified, perform magnetic particle examination on the
            following welds:

            a.  Fillet welds on the pressure boundary,

            b.  Back-chipped surface of full penetration welds, and
                finished weld surface of full penetration welds.

        3.  Liquid penetrant inspection may be substituted for
            non-magnetic material, or if approval is obtained from LANL.
            Perform liquid penetrant testing after any grinding and
            polishing operations. Repair and re-test detected defects.

    C.  Hydrostatic or Pneumatic Pressure Test:

        1.  Perform to the requirements of ASME B&PVC, Section VIII,
            Division 1, and ASME B31.3, Category M (if applicable).
            Ensure that weld surfaces are free of coating materials
            during test. Hold hydrostatic test pressure for 15 minutes,
            minimum.

        2.  Water for shop-testing austenitic stainless steel vessels
            shall be potable quality with a chloride ion content of less
            than 50 ppm. After testing, drain water and dry --- standing
            water is not allowed to evaporate to dryness, unless
            de-ionized water is used as a final rinse.

    D.  Test Reports: Provide test reports as required by the
        Subcontract documents and this specification. Include the
        following information in the test report:

        1.  Pressure vessel identification,

        2.  Date of test,

        3.  Name and signature of the certified test operator,

        4.  Location and description of indications,

        5.  Description of repairs and retest, and

        6.  Signature of witness.

    E.  Nameplates & Labeling: Attach an identification nameplate to
        each pressure vessel in accordance with the requirements stated
        in ASME B&PVC, Section VIII, Division 1. Also attach a nameplate
        containing LANL identification information to each pressure
        vessel. ASME and LANL nameplates may be incorporated into a
        single nameplate, if desired. Clearly separate the ASME
        information from the LANL information. Nameplate cannot be
        removed without destruction of the nameplate.

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3.  Execution

    1.  INSTALLATION

        A.  Installation of pressure vessels is facility-specific and
            not covered in this Section. The specification author is to
            address installation for his specific location and
            application. Install pressure vessels in accordance with
            ASME B&PVC, Section VIII.

END OF SECTION

Do not delete the following reference information:

FOR LANL USE ONLY

This project specification is based on LANL Master Specification 43 4113
Rev. 1, dated July 15, 2008.

Section 43 4113 -- Attachment 1

> Pressure Vessel Data Sheet and Sketch Example

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