Downloaded from https://www.everyspec.com MIL-STD-2031 (SH) APPENDIX D I.ARGF? SCA1.f? OPI?N fHW’IRONNfIZNT FIRE TEST 10. SCOI’E 10.1 Scope. This method describes a procedure to test materials at full size in their intended application under a controlled laboratory fire exposure to determine fire tolerance or ease of extinguishment. The objective is to conduct tests to allow comparison of a new material application against the existing material application under the pereeived fire threat.
The intended application shall be tested under all the operating scenarios for the application; for example, in piping these conditions would include dry piping, stagnant fluid in the piping, and flowing fluid in the piping. Data shall be collected for fire growth, smoke generation, and combustion product toxicity in a large scale environment. The test data can be used to confirm small scale test results. This appendix is a mandato~ part of the standard. The information contained herein is intended for compliance. 20. APPLICABLE DOCUMENTS This seetion is not applicable to this appendix. 30.
EQUIPMENT 30.1 Fin test eel~ As a minimum, a 20- by 20-foot enclomm of at l-t 3&M cubic feet shrill simulate a shipboard compartment. The fire compartment enukxu~ p~frnbiy steel, must be able to withstand temperatures up to 1095 (2000 for the 30 minutes duration of the test. The bese of the tit =11 shall be a nonaofnbustIMe matanai such as eonawtc. ‘Xhe fire test cell shall have the following capabilities: a. A method to measure fuel consumption by the volume of fuel being added to the fire pan or a weight load eel] if no fuel is to be added. b. An exhaust system which allows collection of all products of mmbustion for oxygen consumption measurement/analysis.
The exhaust system is also necessary for environmental considerations. The David Taylor Research Center (DTRC) fire test cell or equal shall use a water spray in the lower exhaust duct to create air flow and to settle out smoke particulate. c. A drainage system that shall drain the water and fire products released from the exhaust duct and to drain the base of the teat cell of extinguishment and ancilla~ fluids is needed. Holding tanks for the drained fluids shall be used. d. A gas sampling arrangement to sample the fire gas products for at least CO, ~2, 02, HCN and HCI 22