A-A-58019 Self Generating Nitrogen Servicing Cart \(Sgnsc\)This CID covers a SGNSC which can be towed over unimproved surfaces and transported by helicopter and fixed wing aircraft. It will be used to produce 95 percent pure nitrogen gas at 5000 pounds per square inch gage \(peig\) at a rate of 1511 standard cubic feet per minute \(acfn\) . The nitrogen gas will be used to service tires, struts, accumulators, and to fill external receivers. A bid sample test is required of the offerer. This CID contains Appendix A, Bid Sample Test Requirements; Appendix B, Bid Sample Test Report Requirements; and Appendix C, Certificate Format.

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A-A-58019(USAF)

APPENDIX A

SELF GENERATING NITROGEN SERVICING CART (SGNSC)

BID SAMPLE TEST REQUIREMENTS

BID SAMPLE TEST REOUIREMENTS.

1. The bid sample is the SGNSC unit which the offeror will use for bid sample testing. The

bid sample shall bean operational, production-configured unit.

2. Test Facility. The test facility shall bean independent facility/laboratory which meets

the following requirements:

For low temperature testing, the test facility shall meet the requirements of

MIL-STD-810E, Method 502.3, Section II, Paragraph II-1.1 (Test Facility) and Paragraph II-1.2

(Controls).

For high temperature testing. the test facility shall meet the requirements of

MIL-STD-810E, Method 501.3, Section II, Paragraph II-1.1 (Test Facility) arid Paragraph II-1.2

(Controls).

For both cold and high temperature testing, the facility shall enable the bid sample

SGNSC engine and compressor to ingest conditioned air during each three hour test at each

constant test temperature. (Temperature cycling during testings not required).

3. Bid Sample Test:

Cold temperature operation. The SGNSC shall be operated and tested in

accordance with MIL-STD-810E, Method 502.3, Section I; Section II-3.2 (Procedure II-

Operation); and Section II-4. The test temperatures shall be O F.. -10 F.. and -25 F., at ambient

humidity, which shall be recorded. A twenty-four (24) hour soak is required at each test

temperature. No external starting aids maybe used that are not contained within the SGNSC.

Ether shall not be used as a starting aid. The engine and the compressor shall both ingest

conditioned air during testing, While under test, the SGNSC shall meet the nitrogen gas

production and quality requirements of' par. 7. of the CID for three consecutive how-sat each test

temperature. The test fuel shall be JP-8. After the 3-hour test and at each test temperature, the

SGNSC shall demonstrate the capability to have 200 scf of nitrogen gas at 5000 psig available

within 20 minutes of' the nitrogen system engagement without external systems. Time to fill all

high pressure receivers to a minimum total of 600 scf at 5000 psig shall not exceed 40 minutes.

The receivers shall be empty at the start of each test at each test temperature (vent to

atmosphere).