MIL-STD-1330 Precision Cleaning And Testing Of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, And Hydrogen SystemsThis standard provides the requirements for precision cleaning and testing of oxygen or oxygen-enriched systems and components; oxygen generating plants including nitrogen, hydrogen, and demineralized water support systems and components; and helium, helium-oxygen, and hydrogen life support systems and components. Each activity will implement the applicable requirements of this document through a locally prepared and approved procedure. Activities subject to additional quality assurance requirements such as NAVSEA SS800-AG-MAN-010/P-9290 or NAVSEA SS521-AA-MAN-010 will obtain procedure approval from the applicable certifying activity.

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A.1  SCOPE

MIL-STD-1330D(SH) APPENDIX A

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MATERIAL COMPATIBILITY

A.1.1  Scope.  This Appendix is a mandatory part of the standard.  The information contained herein is intended for compliance.  This appendix provides results of compatibility testing and direction for performing additional testing.

A.2  APPLICABLE DOCUMENTS

A.2.1  General.  The documents listed in this section are specified in sections A.3 of this standard.  This section does not include documents cited in other sections of this standard or recommended for additional information or as examples.  While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections A.3 of this standard, whether or not they are listed.

A.2.2  Non-Government publications.  The following documents form a part of this document to the extent specified herein.  Unless otherwise specified, the issues of the documents are those cited in the solicitation or contract (see 6.2).

ASTM INTERNATIONAL (ASTM)

ASTM D471                -            Standard Test Method for Rubber Property - Effect of Liquids  (DoD

adopted)

ASTM D543                -            Standard Practices for Evaluating the Resistance of Plastics to Chemical

Reagents  (DoD adopted)

ASTM D1280              -            Standard Test Method of Total Immersion Corrosion Test for Soak Tank

Metal Cleaners

ASTM D1414              -            Standard Test Methods for Rubber O-Rings  (DoD adopted) (Copies of these documents are available online at www.astm.org or from ASTM International, 100 Barr

Harbor Dr., PO Box C700, West Conshohocken, PA  19428-2959.)

A.3  PROCEDURE

A.3.1  Compatibility testing.  Compatibility is determined by evaluating material properties such as weight, volume, tensile strength, elongation, or hardness and, for metals, inspecting the surface for discoloration and degradation after exposure to the fluid of interest.  Guidelines for performing material compatibility testing are as specified in A.3.2 through A.3.4.  These guidelines are conservative.  Accordingly, local engineering review of compatibility testing performed or actual experience may result in different conclusions.  Results of compatibility testing using these guidelines are provided in Tables A-I through A-III.  If experience or testing indicates that a material is less compatible than as indicated in these tables, contact NAVSEA.  If a material of interest is not listed in these tables, compatibility testing shall be accomplished using the following guidelines.

A.3.2  Metal.  ASTM D930 or ASTM D1280 provide guidance for performing compatibility testing on metals. The allowable corrosion limits are as specified in MIL-DTL-24800.

A.3.3  Rubber.  ASTM D471 or ASTM D1414 provide guidance for performing compatibility testing on rubbers.  The criteria to determine the exposure limits are as specified in Table A-IV.

A.3.4  Plastic.  ASTM D543 provides guidance for performing compatibility testing on plastics.  The criteria to determine the exposure limits are as specified in Table A-V.

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