Attachment F - Product Specifications.pdf

Attachment F for Solicitation SPE601-26-R-0304

PRODUCT SPECIFICATIONS LIST

The following is a summary of products specifications needed for this solicitation:

A-A-59503E of 4 Jun 2025 – Nitrogen, Technical

CGA G-10.1-2023 – Nitrogen (not full document due to copyright laws)

MIL-PRF-25508J of 2 Mar 2020 – Propellant, Oxygen

MIL-PRF-27210J of 7 Aug 2013 – Oxygen, Aviator’s Breathing

MIL-PRF-27401H of 9 Jan 2024 – Propellant Pressurizing Agent, Nitrogen

MIL-PRF-27415D of 28 Feb 2023 – Propellant Pressurizing Agent, Argon

NOTE: Files for each product specification are attached to this document

Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGT@dla.mil or Defense Logistics

Agency Aviation VEB, 6090 Strathmore Rd8000 Jefferson Davis Highway, Richmond, VA

2323797-5616. Since contact information can change, you may want to verify the currency of this address information using the ASSIST database at https://assist.dla.mil/.

AMSC N/A FSC 6830

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

METRIC

A-A-59503E

4 June 2025

SUPERSEDING

A-A-59503D

24 October 2019

COMMERCIAL ITEM DESCRIPTION

NITROGEN, TECHNICAL

The General Services Administration has authorized the use of this commercial item description for all federal agencies.

1. SCOPE. This commercial item description (CID) covers two types of nitrogen: gaseous and liquid. Each type of nitrogen can be obtained in three different technical grades based primarily on nitrogen and oxygen content. Liquid nitrogen is used as a cooling agent for low temperature and cryogenic processes to shield temperature-sensitive materials and equipment from the effects of heat. Gaseous nitrogen is used to purge or pressurize systems or provide inert atmospheres.

The list of intended uses includes, but is not limited to: pressurizing fuel tanks, hydraulic system accumulators, aircraft struts, rocket engine propellant systems, and carbon dioxide cylinders;

purging aircraft oxygen converters; and purging and calibrating instruments. Since some systems are sensitive to oil contamination, gaseous nitrogen is divided into two classes: oil free and oil tolerant. Class 1, oil free nitrogen, is used for applications that cannot tolerate hydrocarbons, such as the purging of oxygen equipment. Class 2, oil tolerant nitrogen, is used for pressurizing oil-containing systems such as aircraft struts.

2. CLASSIFICATION. The nitrogen shall be classified by the following types, grades, and classes:

2.1 Type. The technical nitrogen shall be one of the following types, as specified in the acquisition order (see 7.4):

Type I - Gaseous

Type II - Liquid

Source: http://assist.dla.mil -- Downloaded: 2025-08-21T16:38Z Check the source to verify that this is the current version before use.

file://///orgeast.dir.ad.dla.mil/Aviation/RIC/V/VE/VEB/5300.04_RefLibrary/Elec_STD_Library/6830/A-A-59503/A-A-59503C%20-%20Revision%20-%2014Mar2011/3-Final/STDZNMGT@dla.mil https://assist.dla.mil/

2.2 Grade. Nitrogen of grades UHP and A are equivalent to quality verification levels (QVLs) presented in Compressed Gas Association (CGA) G-10.1, "Commodity Specification for

Nitrogen". The technical nitrogen shall be one of the following grades, as specified in the acquisition order (see 7.4):

Grade UHP - 99.999 percent nitrogen (equivalent to QVL Q)

Grade A - 99.998 percent nitrogen (equivalent to QVL L)

Grade B - 99.50 percent nitrogen

2.3 Class. The terms "oil free" and "oil tolerant", indicated by Class 1 and Class 2, replaced the older terms "water pumped" and "oil pumped", respectively. The older terminology referenced the type of compressors, water and soap lubricated, or oil lubricated, used in charging nitrogen gas into cylinders. Due to advancements in compressor technology and other systems being used, the newer terms now refer to the type of application. When applied to nitrogen, the term "oil free" shall be used to identify the gas is suitable for applications that cannot tolerate hydrocarbon contamination. The term "oil tolerant", when applied to nitrogen, indicates that the gas shall onlycan be used in applications that can tolerate or contain hydrocarbon material. This classification is primarily concerned with potential contamination of the cylinder (see 7.6.1) and is therefore independent from the total hydrocarbon content limits on the gas (see Table I); which is mandatory for both classes. This terminology applies only to gaseous nitrogen (see 7.5). The technical nitrogen shall be one of the following classes, as specified in the acquisition order (see

7.4):

Class 1 - Oil free

Class 2 - Oil tolerant (Type I only)

3. SALIENT CHARACTERISTICS

3.1 Material. The material shall conform to the requirements as specified in Table I. The limiting characteristics shall be determined by one of the methods described in CGA G-10.1.

TABLE I. Requirements. 1

Limiting characteristics Grade UHP 2 Grade A 2 Grade B 2

CGA G-10.1 Quality Verification Level QVL Q QVL L n/a

Nitrogen, minimum (percent by volume) 3 99.999 99.998 99.50

Argon, neon, helium 5 - -

Oxygen 1 10 5,000

Water vapor 2 4 26

Total hydrocarbon content (as methane) 1 20 50 1 Additional information on the properties and handling of nitrogen may be found in

CGA P-9, "The Inert Gases: Argon, Nitrogen, and Helium".

2 Unless otherwise indicated, quantities given are the maximum in parts per million by volume (ppm (v/v)).

3 Unless otherwise indicated, the percent by volume of nitrogen for Type I may include up to a total of 1.5% by volume of argon, neon, and helium.

3.2 Odor. The nitrogen shall have no odor.

3.3 Particulate matter. The material shall contain no solid particles whose maximum dimension is greater than 50 micrometers (μm) for Type I nitrogen or 30 μm for Type II nitrogen, when specified in the acquisition order (see 7.4). This shall be determined by any acceptable commercial method practiced by the manufacturers of nitrogen. Because the major source of contamination is from cylinders and other containment or transfer systems, control of particulate matter in the supplier's and user’s dispensing equipment can be assured by the installation of a

10-μm (nominal) or better filter in the service line.

4. REGULATORY REQUIREMENTS

4.1 Recovered materials. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition

Regulation (FAR).

4.2 Safety data sheet (SDS). Manufacturers shall prepare and submit a SDS in accordance with

FED-STD-313, "Material Safety Data, Transportation Data and Disposal Data for Hazardous

Materials Furnished to Government Activities", and meeting the requirements of

29 Code of Federal Regulations (CFR) §1910.1200, "Occupational Safety and Health Standards:

Hazard Communication".

4.3 Hazard warning label. Occupational Safety and Health Administration hazard warning labels shall be furnished in accordance with 29 CFR 1910.1200.

5. PRODUCT CONFORMANCE PROVISIONS

5.1 Product conformance. The product provided shall meet the salient characteristics of this commercial item description, conform to the producer’s own drawings, specifications, standards, and quality assurance practices, and be the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance.

5.2 Market acceptability. The products offered must have been previously sold either to the government or on the commercial market.

5.2.1 Market acceptability criterion. The company must be able to show data from tests or process monitoring that demonstrates the ability of the product to meet the salient characteristics of technical grade nitrogen as specified herein.

6. PACKAGING

6.1 Preservation, packing, and marking. Preservation, packing, and marking shall be as specified in the acquisition order (see 7.4).

6.2 Packaging and special markings. All government-owned cylinders that have been provided for filling shall be reconditioned as necessary in accordance with MIL-STD-1411. Department of

Defense cylinders shall conform to RR-C-901, be equipped with valves conforming to

A-A-59860, and be color-coded in accordance with MIL-STD-101. The capacity of nitrogen shall be specified in cubic feet for gaseous nitrogen and designated by the letter "B" for bulk liquid nitrogen or as specified in the acquisition order (see 7.4).

6.3 Palletization. The palletization of material shall be as specified in the acquisition order

(see 7.4). MIL-STD-147 may be used for palletization.

7. NOTES

7.1 Part or identification number (PIN). The following PIN procedure is for government purposes and does not constitute a requirement for the contractor.

AA59503 - X XXX X XXX Example of reference part number: AA59503-1A1226

Capacity: Use cubic feet for gaseous nitrogen

Use "B" for bulk liquid nitrogen

Class: 1 - Oil free

2 - Oil tolerant (Type I only)

Grade: UHP - 99.999 percent nitrogen (QVL Q)

A - 99.998 percent nitrogen (QVL L)

B - 99.50 percent nitrogen

Type: 1 - Type I - Gaseous

2 - Type II - Liquid

CID number

7.2 Sources of documents.

7.2.1 Electronic copies of federal specifications and standards can be obtained from https://quicksearch.dla.mil.

7.2.2 Electronic copies CFR documents can be obtained from https://gov.ecfr.io/cgi-bin/ECFR.

7.2.3 Electronic copies of FAR documents may be obtained from https://www.acquisition.gov/.

7.2.4 Electronic copies of CGA standards may be obtained from http://www.cganet.com/.

7.3 International standardization agreements (ISAs). Certain provisions of this CID (section 3) are subject to ISA NATO STANAG 3624, "Nitrogen and Replenishment Equipment Characteristics".

When amendment, revision, or cancellation of this specification is proposed which will modify the international agreement concerned, the preparing activity will take appropriate action through international standardization channels, including departmental standardization offices, to change https://quicksearch.dla.mil/ https://gov.ecfr.io/cgi-bin/ECFR https://www.acquisition.gov/browse/index/far http://www.cganet.com/ the agreement or make other appropriate accommodations. Copies of this ISA are available online at https://assist.dla.mil.

7.4 Ordering data. The acquisition order should specify the following information:

a. CID document number, revision, and CID PIN.

b. Type of technical nitrogen (see 2.1).

c. Grade of technical nitrogen (see 2.2).

d. Class of technical nitrogen (see 2.3).

e. Particulate matter testing, if required (see 3.3).

f. Preservation, packing, and marking requirements (see 6.1).

g. Capacity, in cubic feet for gaseous nitrogen, or "B" for bulk liquid nitrogen (see 6.2).

h. Palletization requirements (see 6.3).

7.5 Intended use. Oil tolerant nitrogen gas, Class 2, shall only be used with oil-containing systems or systems that can tolerate hydrocarbon contamination, like pressurizing aircraft struts.

It is not to be used to purge or pressurize oxygen or air for human respiration systems or for any vessel piping, valves, gauges, etc. that is for oxygen service. Contamination of an oxygen system with an oil tolerant gas could result in a fire or explosion with loss of life or loss of a complete weapons system. This CID is not suitable for procurement of nitrogen for use in reactor plant, steam plant, and shipyard applications. For these applications see A-A-59155.

7.6 Valve outlet connections.

7.6.1 Cautionary note. The valve outlet connection for oil tolerant nitrogen should be different from oil free valve outlet connections to prevent the erroneous use of oil tolerant nitrogen cylinders for oil free applications. A reverse flow typically occurs during an oil tolerant operation (pressurizing oil-containing systems, e.g. aircraft struts). As a result, cylinders are contaminated with oil and cannot be used for oil free applications.

7.6.2 Valve connections. The applicable standard for valve connections is CGA V-1, "Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections". Note that valve connection

590 is a limited standard for nitrogen per CGA V-1. The typical connections for each class and pressure are listed in table II apply. however alternative valves may be specified in the packaging information. Care should be taken to ensure the valve is compatible with the intended use and cannot be confused with a cylinder of a different class.

TABLE II. Valve connection numbers.

Pressure (psig) Up to 3,000 3,001 - 4700

Class 1 (oil free) 580 680

Class 2 (oil tolerant) 580 or 590 621

7.7 Subject term (key word) listing.

Aviator's breathing oxygen

Calibrate

Compressed gas

Cooling agent

Cryogenic

Cylinder

Human respiration

Inert

Oil free

Oil tolerant

Pressurize

Purge

Struts, aircraft

Valves

7.8 Changes from previous issues. Marginal notations are used in this revision to identify changes with respect to the previous issue.

MILITARY INTERESTS:

CIVIL AGENCY

COORDINATING ACTIVITY:

Custodians:

GSA - FAS

Army - AV

Navy - SH

Air Force - 68

DLA - GS

Review Activities:

Army - AR, MD1

Navy - AS, MC, OS, YD

Other - DS

Preparing Activity:

DLA - GS3

(Project 6830-2025-001)

NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST database at https://assist.dla.mil/.

CGA G-10.1—2023

COMMODITY SPECIFICATION

FOR NITROGEN

NINTH EDITION

PAGE ii COMPRESSED GAS ASSOCIATION, INC. CGA G-10.1—2023

PLEASE NOTE:

The information contained in this document was obtained from sources believed to be reliable and is based on technical information and experience currently available from members of the Compressed Gas Association, Inc.

and others. However, the Association or its members, jointly or severally, make no guarantee of the results and assume no liability or responsibility in connection with the information or suggestions herein contained. Moreover, it should not be assumed that every acceptable commodity grade, test or safety procedure or method, precaution, equipment or device is contained within, or that abnormal or unusual circumstances may not warrant or suggest further requirements or additional procedure.

This document is subject to periodic review, and users are cautioned to obtain the latest edition. The Association invites comments and suggestions for consideration. In connection with such review, any such comments or suggestions will be fully reviewed by the Association after giving the party, upon request, a reasonable oppor-tunity to be heard. Proposed changes may be submitted via the Internet at our website, www.cganet.com.

This document should not be confused with federal, state, provincial, or municipal specifications or regulations;

insurance requirements; or national safety codes. While the Association recommends reference to or use of this document by government agencies and others, this document is purely voluntary and not binding unless adopted by reference in regulations.

A listing of all publications, audiovisual programs, safety and technical bulletins, and safety posters is available via the Internet at our website at www.cganet.com. For more information, contact CGA at Phone: 703-788-2700, ext. 799. E-mail: customerservice@cganet.com.

Work Item 21-048 Atmospheric Gases and Equipment Committee

NOTE—Technical changes from the previous edition are underlined.

NINTH EDITION: 2023

EIGHTH EDITION: 2016

SEVENTH EDITION: 2008

SIXTH EDITION: 2004

© 2023 The Compressed Gas Association, Inc. All rights reserved.

All materials contained in this work are protected by United States and international copyright laws. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical including photocopying, recording, or any information storage and retrieval system without permission in writing from The Compressed Gas Association, Inc. All requests for permission to reproduce material from this work should be directed to The Compressed Gas Association, Inc., 8484 Westpark Drive, Suite 220, McLean, VA 22102. You may not alter or remove any trademark, copyright or other notice from this work.

CGA G-10.1—2023 COMPRESSED GAS ASSOCIATION, INC. PAGE iii

Contents Page

1 Scope

2 Definitions

3 Classification

3.1 Types

3.2 Quality verification levels (grades)

3.3 Quality tests

4 Quality verification systems

4.1 Production qualification tests

4.2 Analytical requirements of the production qualification tests

4.3 Lot acceptance tests

5 Sampling

5.1 Container sample size

5.2 Gaseous samples

5.3 Liquid samples

6 Analytical procedures

6.1 Parameters of analysis

6.2 Percent nitrogen

6.3 Water content

6.4 Total hydrocarbon content

6.5 Oxygen content

6.6 Hydrogen content

6.7 Argon, helium, and neon content

6.8 Carbon monoxide content

6.9 Carbon dioxide content

6.10 Permanent particulates of Type II

6.11 Odor detection

6.12 NF tests

7 Containers

7.1 Nitrogen containers

7.2 Container preparation

7.3 Nitrogen NF

7.4 Valves on nitrogen containers

7.5 Pressure relief devices

8 Moisture conversion data

9 References

10 Additional References

Tables

Table 1—Directory of limiting characteristics Table 2—Typical uses Table 3—Moisture conversion data

CGA G-10.12023 COMPRESSED GAS ASSOCIATION, INC. PAGE 1

1 Scope

This publication describes specification requirements for gaseous and liquid nitrogen.

This publication does not attempt to recommend or establish end usage designations for specific types of grades of products. Users requiring this kind of information should contact individual gas suppliers.

2 Definitions

For the purpose of this publication, the following definitions apply.

2.1 Publication terminology

2.1.1 Shall

Indicates that the procedure is mandatory. It is used wherever the criterion for conformance to specific recom-mendations allows no deviation.

2.1.2 Should

Indicates that a procedure is recommended.

2.1.3 May

Indicates that the procedure is optional.

2.1.4 Will

Is used only to indicate the future, not a degree of requirement.

2.1.5 Can

Indicates a possibility or ability.

2.2 Technical definition

2.2.1 Container

Portable compressed gas cylinders and liquid containers made in accordance with Title 49 of the U.S. Code of Federal Regulations (49 CFR) Parts 100-199; Transport Canada’s Transportation of Dangerous Goods Regula-tions; or the ASME Boiler and Pressure Vessel Code, Section VIII, Div 1 [1, 2, 3].1

3 Classification

3.1 Types

Gaseous nitrogen is denoted as Type I and liquid nitrogen as Type II.

3.2 Quality verification levels (grades)

Table 1 presents the component maximum in parts per million (ppm [v/v]) unless otherwise stated for the quality verification levels (QVLs) of nitrogen. A blank indicates no maximum limiting characteristic. The absence of a value in a listed QVL does not imply that the limiting characteristic is or is not present, but merely indicates that the test is not required for compliance with the specification. Typical uses are listed in Table 2.

3.3 Quality tests

By standard practice, the supplier ensures the QVL of nitrogen. If otherwise required, alternative control proce-dures are described in 4.3.1, 4.3.2, and Sections 5 and 6. Other control procedures not listed in this specification are acceptable if agreed upon between the supplier and the customer.

1 References are shown by bracketed numbers and are listed in order of appearance in the reference section.

MIL-PRF-25508J

2-MARCH-2020

MIL-PRF-25508H

27-October-2011

PERFORMANCE SPECIFICATION

PROPELLANT, OXYGEN

AMSC N/A FSC 9135

Comments, suggestions, or questions on this document should be addressed to AFPET/PTPS, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632 or e-mailed to AFPET.PTPS@US.AF.MIL. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.dla.mil.

Source: http://assist.dla.mil -- Downloaded: 2025-08-21T16:20Z

This specification is approved for use by all Departments and Agencies of the Department of Defense.

1. SCOPE

1.1 Scope. This specification covers the requirements for three grades and two types of oxygen.

1.2 Classification. The oxygen will be of the following types and grades as specified (see 6.2).

1.2.1 Types. The types of oxygen are as follows:

Type I – Gaseous

Type II – Liquid

1.2.2 Grades. The grades of oxygen are as follows:

Grade A – 99.6 percent pure, standard

Grade B – 99.5 percent pure, reduced standard

Grade F – 99.990 percent pure, fuel cell and breathing

1.3 Part or identifying number (PIN). The PIN’s to be used for oxygen acquired to this specification are created as follows:

M 25508 - X X Example of PIN: M25508-2B

Grade (see 1.2.2).

Type (see 1.2.1). Use 1 for Type I, 2 for Type II.

Specification number.

Prefix for military specification.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification 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 3 and 4 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks forms a part of this document to the extent specified herein. Unless otherwise specified, the issues of this document are those cited in the solicitation or contract.

COMMERCIAL ITEM DESCRIPTION

A-A-58092 Tape, Antiseize, Polytetrafluorethylene

(Copies of this document are available online at https://quicksearch.dla.mil.)

2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM INTERNATIONAL (ASTM)

ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

ASTM F307 Standard Practice for Sampling Pressurized Gas for Gas Analysis

ASTM F310 Standard Practice for Sampling Cryogenic Aerospace Fluids

(Copies of these documents are available from https://www.astm.org.)

COMPRESSED GAS ASSOCIATION (CGA)

CGA G-4.3 Commodity Specification for Oxygen

CGA P-15 Filling of Industrial and Medical Nonflammable Compressed Gas Cylinders

(Copies of these documents are available from https://www.cganet.com.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Grade requirements. The purity and impurity concentrations as applicable to each grade of oxygen shall conform to the limits of Table I when tested in accordance with the applicable test method also specified in Table I. Other limits and tests may be specified by the procuring activity (see 6.2).

3.2 Limiting values. The following applies to all specified limits in this specification. For purposes of determining conformance with these requirements, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit according to the rounding-off method of ASTM E29.

https://www.astm.org/ https://www.cganet.com/

3.3 Filter. If required by contract, a filter with no more than a 10-micrometer nominal and 40-micrometer absolute rating shall be installed between the manufacturer’s plant system and the manifold used to fill the gas or liquid containers for delivery (see 6.2).

TABLE I. Grade limits for oxygen.

Grade

Test Method A B F

Purity, percent by volume, min

99.6 99.5 99.990 4.4.1

Impurities, ppm by volume, max 4000 5000 100 4.4.1

Total hydrocarbons as methane

50 67.7 20 4.4.2

Water 3 26.3 3 4.4.2

Methanea - - 16 4.4.2

Ethanea - - 2 4.4.2

Propane and higher hydrocarbons as propanea - - 1 4.4.2

Nitrous oxidea - - 1 4.4.2

Halogenated hydrocarbonsa

- - 1 4.4.2

Carbon monoxide and carbon dioxidea - - 1 4.4.2

Other (N, Ar, Kr, etc.)a - - 75 4.4.2

Odor None None None 4.4.2

Particulateb, mg/L, max 1.0 1.0 1.0 4.4.3

Notes:

a. For Grades A and B, analysis may be necessary for total purity calculation if a total purity analysis is unavailable (see 4.4.1).

b. Applies to Type II product only, if required by contract (see 6.2).

3.4 Filled containers (Type I only).

3.4.1 Filling Pressure. The container filling pressure shall not differ from that required by the contract by more than 1.0% at 70°F when tested as specified in 4.5.1. In no case shall the filling pressure exceed the rated service pressure of the container. Pressure-Temperature Filling Charts in CGA P-15 may be used.

3.4.2 Leakage. Cylinders shall not leak when tested according to 4.5.2.

4. VERIFICATION

4.1 Points of inspection (see 6.2). Unless otherwise specified, acceptance tests shall be conducted at the site of filling prior to shipment or departure.

4.2 Conformance inspection. Conformance tests shall consist of the following:

a. Individual tests (Type I only) 4.2.1

b. Sampling tests 4.2.2

4.2.1 Individual tests (Type I only). Each container (cylinder or tube) shall be subjected to the following tests as described under 4.5.

a. Filling pressure 4.5.1

b. Leakage 4.5.2

4.2.2 Sampling test. The number of oxygen containers shall be selected in accordance with Table II and subjected to the tests required by Table I.

Table II. Sampling for test.

Number of containers in lot Number of containers to be sampled

1 1

2 – 40 2

41 – 70 3

71 – over 4

4.2.3 Lot and Container Definitions

4.2.3.1 Lot: A lot shall be defined as one of the following:

a. All of the oxygen supplied in one or more containers filled from one manifold at the same time.

b. All of the oxygen filled from a single storage tank that is homogenous at the time of withdrawal and is not added to while being withdrawn. After each addition to the storage tank, the contents shall constitute a separate lot.

4.2.3.2 Container: A container is defined as a shipping conveyance consisting of one cylinder or tube, or multiple cylinders or tubes that are interconnected by a single manifold that equalizes the pressure across all the cylinders or tubes to form one unit.

4.2.4 Sample. Each sample shall be of sufficient size to conduct all the conformance tests as specified herein. Unless otherwise specified, the conformance tests shall be performed on each required sample (see 6.2). When required, an equivalent sample shall be forwarded to a laboratory designated by the procuring activity for testing.

4.2.4.1 Sampling methods. All apparatus used shall be made of suitable materials. Each sample taken for analysis shall be representative of the entire contents of the container being sampled. Unless otherwise specified in the acquisition requirements (see 6.2), sampling may be accomplished by the following methods.

a. Type I, gaseous oxygen may be sampled in accordance with ASTM F307; for Type II, liquid oxygen may be sampled in accordance with ASTM F310. It is critical that the outlet of the sampling port and the other equipment used in this process meet oxygen system cleanliness standards. Use an oxygen compatible cleaning solvent in accordance with local procedures for oxygen cleanliness.

b. By connecting the shipping container being sampled directly to the analytical equipment using suitable pressure regulation as required. It is critical that the outlet of the sampling port and the other equipment used in this process meet oxygen system cleanliness standards. Use an oxygen compatible cleaning solvent in accordance with local procedures for oxygen cleanliness.

4.2.5 Non-bulk Containers. Non bulk containers are defined as containers with a water capacity of 400 liters, or less. The number of non-bulk containers Type I (gaseous) or Type II (liquid) oxygen will be in accordance with Table II. Containers to be sampled may be selected at random.

4.2.6 Bulk Containers. Bulk containers are defined as having a water capacity in excess of 400 liters. Each bulk container filled with Type I (gaseous) and Type II (liquid) oxygen constitutes a lot and shall be sampled.

4.2.6.1 Continuous service. (See 6.4.1) Unless otherwise specified by the procuring activity, the following sample option for oxygen shall be used for storage and transport tanks engaged in continuous oxygen service (see 6.2). Contractor shall sample the contents of each transport tank engaged in continuous oxygen service at least once every seven days at uniform intervals of time. Samples shall be taken from the filled transport tanks. Contractor shall sample the contents of each transport tank when entering continuous service and when the transport tank has remained empty for a period greater than 24 hours. When empty, all ports and vents shall remain closed to the atmosphere. While in continuous service, compliance with conformance tests specified herein shall be determined by sampling the filling point storage tank after each addition or, in case of continuous production, at established intervals not less frequent than once every 24 hours. When a storage tank is being filled during a change of duty shift, sampling shall be performed after filling.

4.3 Rejection. When any sample tested in accordance with 4.4 fails to conform to the requirements specified herein, the entire lot represented by the sample shall be rejected.

4.4 Analytical procedures. Unless otherwise specified, samples shall be analyzed according to the procedures described below (see 6.2). Calibration gas standards may be required to calibrate (zero and span) analytical instruments used to determine the purity and impurity contents of the oxygen. The accuracy of the calibration gas standards is to be traceable to the National Institute of Standards and Technology (NIST).

4.4.1 Purity. Methods shall be selected from CGA G-4.3 except for grade F. The purity of grade F shall be determined by difference as follows:

lO 4

2 10100% where l equals the sum of the water content, total hydrocarbons, nitrous oxide, carbon dioxide, carbon monoxide, and inert gases in ppm by volume.

4.4.2 Impurities. Methods for analyzing impurities shall be selected from those of CGA G-4.3.

4.4.3 Particulate content. A filter holder assembly (Pall Life Sciences part No. 2220) or equivalent, modified as shown in Figure 1, shall be attached to the withdrawal line of the vessel to be utilized to fill the tanks. A pre-weighed filter paper (47 mm glass fiber paper, type A/E or equivalent) shall be placed on top of another filter of the same kind. The filters shall then be placed on the porous filter support, which, in turn, shall be placed in the filter holder as shown in Figure 1. The male threads of the filter holder shall be wrapped with thin, nonadhesive-backed polytetrafluorethylene tape A-A-58092, or technical equivalent, to prevent galling of the threads. The holder shall be tightened by hand as tight as possible to prevent bypassing of the filter element. The discharge liquid from the filter housing shall be collected in a clean, uninsulated, ambient temperature vessel marked to indicate when 5 liters of liquid have been collected. The liquid flow shall be terminated when 5 liters of liquid have been collected. The filter holder shall be removed from the line and permitted to reach ambient temperature. The warmup to ambient temperature may be expedited by use of an oven or other heat source. Care shall be exercised to ensure that any airflow which enters the unit will be directed through the inlet of the assembly to prevent displacing and particles from the surface of the filter. Upon warmup, the other side of the holder shall be wiped with a clean cloth and the holder then disassembled. The filter paper shall be closely inspected. The test shall be repeated if evidence of either (a) the filter not being securely clamped by uniform depression of its edge; (b) the filter having been cut by the holder; or (c) when dirt particles are detected in the clamped area indicating bypassing had been encountered. The test shall also be repeated when either the bottom filter shows any discoloration or when leakage of liquid from the filter holder is detected. Upon completion of a valid test the filter shall be removed from the housing and weighed to the nearest 0.1 mg.

FIGURE 1. Filter Cryogenic Liquids

4.5 Containers of Type I oxygen.

4.5.1 Filling pressure. Containers shall be tested for proper filling pressure by attaching a calibrated Bourdon-tube gauge or equivalent to the valve outlet and by attaching either a thermocouple or thermometer to the container wall. The gauge shall have scale divisions not greater than 100 kPa (15 psi). If a thermometer is used, tape or putty shall be applied to the bulb to protect if from extraneous temperatures. Putty shall not be applied between the bulb and the container wall. The thermometer shall have scale divisions not greater than 1°C (2°F). The containers shall be stabilized to ambient temperature. The valve shall then be opened and the internal pressure observed on the gauge. If the internal pressure differs from the applicable pressure value by more than 100 kPa (15 psi), the container, and all other containers filled from the same manifold at the same time shall be rejected.

4.5.2 Leakage. Each Type I oxygen container shall be tested for leaks at the neck threads, stem packing, and safety device of the valve with leak-detection fluid. Valve seat leakage shall be tested by means of a tube from the valve outlet to a container of liquid. Methods of leak detection and/or the leak check guidance in CGA P-15 may also be used.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Point’s packaging activities within the Military Service or Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use. The propellant covered by this specification is intended for use as follows.

a. Grade A, type I – Purging and pressurization of propellant systems and rocket engines.

b. Grade A, type II – Oxidizer.

c. Grade B, type II - Oxidizer.

d. Grade F, types I and II – Fuel cell grade that may be used for crew breathing in subsystems utilizing a common storage for both functions.

6.2 Acquisition requirements. Acquisition documents should specify the following:

a. Title, number, and date of this specification.

b. Type and grade of oxygen required (see 1.2).

c. If required, the specific issue of individual documents referenced (see 2.2.1).

d. When other limits or tests are required (see 3.1).

e. When the particulate test or product filtration is required (see Table I).

f. When a variation in the points of inspection is required (see 4.1).

g. When a variation of the conformance tests to be performed on each sample is required (see 4.2.4).

h. When a variation to the sampling method is required (see 4.2.4.2).

i. When a variation to the continuous service option is required (see 4.2.6.1).

j. When a variation to the 400 liter criteria for sampling is required (see 4.2.7).

k. When a variation of the analytical procedures is required (see 4.4).

l. Packaging requirements (see 5.1 and 6.3).

6.3 Packaging requirements. Guidance for cylinders may be found in the following documents.

a. RR-C-901 Cylinders, Compressed Gas: Seamless Shatterproof, High Pressure DOT 3AA Steel, and 3AL Aluminum

b. A-A-59860 Valves, Cylinder, Gas (For Compressed or Liquefied Gases)

c. MIL-STD-101 Color Code for Pipelines and for Compressed Gas Cylinders

d. MIL-STD-1411 Inspection and Maintenance of Compressed Gas Cylinders

e. 49 CFR 171 – 199 Code of Federal Regulations (Transportation)

6.4 Definition.

6.4.1 Continuous service. Continuous service applies to continuous deliveries under Government contract of oxygen complying with the conformance tests specified herein.

6.5 Subject term (key word) listing.

Aerospace Breathing Cryogenic

Fuel cell

6.6 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.

Custodians: Preparing activity:

Army – MI Air Force – 68 Navy – AS (Project 9135-2019-001) Air Force – 68

DLA – PS

Review activities:

Air Force – 19

DLA – LS

Civil Agencies:

NASA – NA

NOTE: The activities listed above were interested in this document as of the date of this document.

Since organizations and responsibilities can change, you should verify the currency of the information using the ASSIST Online database at https://assist.dla.mil.

MIL-PRF-27210J

7 August 2013

MIL-PRF-27210H

01 October 2009

OXYGEN, AVIATOR’S BREATHING, LIQUID AND GAS

AMSC N/A FSC 6830

Comments, suggestions, or questions on this document should be addressed to AFPA/PTPT, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632 or e-mailed to AFPA.PTPS@wpafb.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.dla.mil.

Source: http://assist.dla.mil -- Downloaded: 2025-08-21T18:18Z mailto:AFPA.PTPS@wpafb.af.mil

This specification is approved for use by all Departments and Agencies of the Department of Defense.

1.1 Scope. This specification covers the requirements for two types of aviator’s breathing oxygen.

1.2 Classification. Oxygen is classified as the following types, as specified (see 6.2).

Type I - Gaseous

Type II - Liquid

1.3 Part or identifying number (PIN). The PINs to be used for oxygen acquired to this

M 27210 - X - XX - XXX Example of PIN: M27210-1-22-202

Pressure (in pounds/inch2, gauge) psig/10 (Type I only)

Cubic feet/10 (Type I only)

Type (see 1.2.1). Use 1 for type I; 2 for type II

Specification number

Prefix for military specification

2.1 General. The documents listed in this section are specified in sections 3, 4 and 5 of this specification. This section does not include documents cited in other sections of this specification 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 3, 4 or 5 of this specification, whether or not they are listed.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-101 Color Code for Pipelines and for Compressed Gas Cylinders

MIL-STD-1411 Inspection and Maintenance of Compressed Gas Cylinders

COMMERCIAL ITEM DESCRIPTIONS

A-A-59860 Valves, Cylinder, Gas (For Compressed or Liquefied Gases)

(Copies of these documents are available online at https://assist.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094)

2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM INTERNATIONAL (ASTM)

ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications (DoD Adopted)

ASTM F307 Standard Practice for Sampling Pressurized Gas for Gas Analysis (DoD Adopted)

ASTM F310 Standard Practice for Sampling Cryogenic Aerospace Fluids (DoD Adopted)

(Copies of these documents are available online at http://www.astm.org or the ASTM International, 100 Barr Harbor Drive, West Conshohocken PA 19428-2959)

CGA G-4.3 Commodity Specification for Oxygen

CGA P-15 Filling of Industrial and Medical Nonflammable Compressed Gas

(Copies of these documents are available online at http://www.cganet.com or the Compressed Gas Association, Inc., 14501 George Carter Way, Suite 103, Chantilly VA 20151, USA)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.1 First article. When specified, a sample shall be subjected to first article inspection in accordance with 4.2 (see 6.2).

3.2 Purity. The oxygen (Type I and II) shall contain not less than 99.5 percent oxygen by volume when tested in accordance with 4.5. The remainder, except for moisture and minor constituents specified in Table I, shall be argon and nitrogen.

3.3 Impurities. The oxygen shall be free from all contaminants of known toxicity to the maximum practicable extent. Limitations on specific impurities shall be as follows:

3.3.1 Odor. The oxygen (Type I and II) shall contain no odor when tested as specified in 4.5.

3.3.2 Minor constituents. Minor constituents of Types I and II shall not exceed the quantity specified in Table I.

3.3.3 Moisture. Moisture in Types I and II shall not exceed 7 ppm of water vapor or a maximum dew point of -63.3°C (-82°F) when tested as specified in 4.5.

3.4 Materials. There is no requirement included herein which should be interpreted to exclude the use of reclaimed materials in the manufacture of this commodity.

3.5 Filter. When required, Type II oxygen shall be passed through a filter as specified in 4.6.

3.6 Limiting values. The following applies to all specified limits in this specification: For purposes of determining conformance with these requirements, an observed value or a calculated value shall be rounded off in the last right-hand digit used in expressing the specification limit, using the Rounding Method of ASTM E29.

3.7 Gas Cylinders (Type I only).

3.7.1 Pressure. The container filling pressure (see 6.2) shall not differ from that required by the contract by more than 1.0% at 21°C (70°F) when tested as specified in 4.4.1. In no case shall the filling pressure exceed the rated service pressure of the container. Pressure-Temperature Filling Charts in CGA P-15 may be used.

3.7.2 Leakage. Cylinders shall not leak when tested according to 4.4.2.

3.7.3 Inspection and maintenance. Compressed gas cylinders shall be inspected, maintained and charged according to 4.4.3.

http://www.astm.org/ http://www.cganet.com/

TABLE I. Constituent concentrations

Constituent Maximum concentration in parts per million (by volume)

Type I Type II

Carbon Dioxide (CO2) 10 5

Methane (CH4) 50 25

Acetylene (C2H2) 0.1 0.05

Ethylene (C2H4) 0.4 0.2

Ethane (C2H6) and other hydrocarbons as ethane equivalents

6 3

Nitrous Oxide (N2O) 4 2

Refrigerants and Similar Solvents1:

Hydrochlorofluorocarbons (HCFC) Hydrofluoroethers (HFE) Chlorofluorocarbons (CFC)

Other Solvents: Trichloroethylene, n-Propyl Bromide, Trichloroethane, Carbon Tetrachloride, Perchloroethylene, Dichloromethane, Perfluoro-n-Butyl-Iodine

(PFBI)

0.2 0.1

Other Compounds2: (each discernible from background noise on infrared spectrophotometer or gas chromatograph)

0.2 0.1

Note 1: Examples of Refrigerants and Similar Solvents include, but are not limited to the following compounds: HCFC: HCFC-225 (all isomers), HCFC-141b, HFE: HFE-7100, CFC: Freons

Note 2: Examples of Other Compounds include, but are not limited to, Carbon Monoxide (CO) and Sulfur Hexafluoride (SF6)

4.1 Classification of inspections. A cross reference between the individual inspections and test methods is provided in Table II. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.2).

b. Periodic inspection (see 4.2).

c. Quality conformance inspection (see 4.2).

TABLE II. Test requirements

Characteristic

First Article Inspection

Periodic

Quality Conformance

Paragraph

Test Method

Paragraph Purity – Type I Required Required Required 3.2 4.5 Purity – Type II Required Required1 Required 3.2 4.5 Odor Required Required Required 3.3.1 4.5 Minor Constituents Required Required Not Required Table I 4.5 Moisture Required Required1 Required 3.3.3 4.5 Filled Containers (Type I) Pressure Leakage

Required

3.7.1 3.7.2

4.4.1 4.4.2

Note 1: Reported for correlation purposes only.

4.2 First article, periodic, and quality conformance inspections.

4.2.1 First article inspection. First article inspection shall be defined as a preproduction sample.

Prior to initial delivery of Type I or Type II oxygen, a representative product specimen shall be obtained as specified in 4.3.1.1 (Type I) or 4.3.1.2 (Type II) and forwarded to the designated laboratory (6.2). The product shall meet the requirements in 3.2 and 3.3.

4.2.2 Periodic inspection. A representative product specimen of oxygen shall be obtained as specified in 4.3.1.1 (Type I) or 4.3.1.2 (Type II) and shall be taken once every 60 calendar days for the duration of the contract. This sample shall be shipped to the specified laboratory (6.2) for testing to determine compliance with requirements specified in Table II. The specified laboratory shall also test for purity and moisture if there is sufficient sample. The purity results for Type II oxygen and the moisture results for Type I and Type II oxygen shall be reported for correlation purposes and shall not be used to determine compliance to requirements of 3.2 or 3.3.3.

4.2.3 Conformance inspection. Quality conformance inspection shall consist of the following:

a. Individual container / cylinder inspection (see 4.2.3.2).

b. Sampling inspection per lot (see 4.2.3.3).

4.2.3.1 Place of inspection. Quality conformance inspection shall be performed at source.

4.2.3.1.1 Type I oxygen. Quality conformance inspection on cylinders filled with Type I oxygen shall be performed at the site of filling (see 6.2).

4.2.3.1.2 Type II oxygen. Quality conformance inspection shall be performed on samples taken from Type II oxygen transport container prior to leaving the site of filling. The transport container shall not be permitted to take on further liquid oxygen between inspection at the filling point and arrival at its destination, unless all quality conformance inspections are performed on the contents after such filling.

4.2.3.2 Individual container / cylinder inspection. Individual inspection will be as follows.

4.2.3.2.1 Type I Individual Inspection. Each cylinder filled with Type I oxygen shall be subjected to the tests in Table III.

4.2.3.2.2 Type II individual inspection. After filling the shipping container, two product specimens shall be drawn from each container. One specimen shall be in liquid state and subjected to the odor test specified in 4.5. The other specimen shall be vaporized and subjected to the tests in Table III, as specified in 4.5.

TABLE III. Individual inspection

TEST TYPE I TYPE II

Leak test 4.4.2 ---

Odor test --- 4.5

Purity test --- 4.5

Moisture test --- 4.5

4.2.3.3 Sampling inspection per lot. Randomly selected samples of Type I oxygen as specified in Table IV shall be subjected to the following inspection:

Odor test 4.5

Fill pressure 4.4.1

Purity 4.5

Moisture 4.5

The fill pressure shall be performed prior to the odor, purity, and moisture tests. The cylinder pressure shall be checked after completion of all tests. If the sample cylinder pressure is below the minimum acceptable value, the cylinder shall be filled to within the acceptable range.

4.2.3.4 Lot definition. Each set of Type I oxygen cylinders filled on the same manifold at the same time shall constitute a lot.

TABLE IV. Sampling for test

2 - 40 2

71 - over 4

4.3 Sampling. Samples required by 4.2.1 and 4.2.2 shall be delivered to the designated Government Laboratory (see 6.4), another designated laboratory, or other laboratories authorized by AFPA/PTPT, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632.

4.3.1 Sampling point. The sampling point will be as follows:

4.3.1.1 Type I oxygen. Samples shall be taken from the manifold during filling operations.

4.3.1.2 Type II oxygen. Samples shall be taken from Type II oxygen storage tanks at the manufacturing site or any distribution facilities. If a distribution facility is supplied from more than one storage or manufacturing facility, each facility shall be checked as specified above.

4.3.2 Sampling method. Unless otherwise specified (see 6.2), oxygen shall be sampled according to the methods of Table V. Sample size shall be sufficient to provide the analyzer with 7 liters of oxygen at 10 atmospheres of pressure.

4.3.2.1 Sample identification. The following data shall be provided on each sample sent to a Government laboratory for analysis: Item name, specification number, Type (I or II), sample number, sampler serial number, contractor's name, address, phone number and return shipping address for sampler, Government representative's name, address, and phone number, reason for analysis (first article, periodic, or resample), contract number, and date sample taken.

TABLE V. Sampling particulars

Sampler Oxygen type Method Recommended final pressure (gauge)

≈ 1 liter size or larger Gas Cylinder

I ASTM F307 ≈12,500 kPa (≈ 1800 psi)

TTU-131/E, Cosmodyne

LLC

II ASTM F310 2750 to 3450 kPa (400 to 500 psi)

FCS 2001, CV

International

II ASTM F310 5500 to 8300 kPa (800 to 1200 psi)

4.4 Cylinders of Type I oxygen.

4.4.1 Filling pressure. Containers shall be stabilized to 21°C (70°F). Containers shall be tested for proper filling pressure by attaching a…