FED-STD-791 Lubricants, Liquid Fuels, And Related Products, Testing Method OfThis test method standard is composed of standard test methods for sampling, inspecting and testing lubricants, liquid fuels and related products. It is issued pursuant to the Federal Property and Administration Services Act of 1949, as amended and its application to the purchase of commodities referred to herein is mandatory on all Federal agencies.

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'�NOTE:This draft dated 15 April 2006' by DasH - Page 332 of 460

FED-STD-791D

6. PROCEDURE

6.1 Fill the fluid cylinder of the spray test setup with test fluid at 15.6� to 37.8�C

(60� to 100�F) and adjust nitrogen pressure to produce a liquid pressure of 6894 " kPa

gage (1000 " 10 psig).

6.2 Adjust the torch to deliver a neutral flame.

6.3 Open the quick-opening valve at the orifice and attempt to ignite the spray

with the torch at the nozzle.

6.4 If the spray does not ignite gradually move the torch away from the nozzle

until ignition takes place (45.7 cm max.)

7. CALCULATIONS

7.1 This section is not applicable to the test procedure.

8. REPORTING

8.1 Report whether the spray ignites. If the spray does ignite, also report:

a. The distance from torch to nozzle at ignition.

b. Whether the spray flashes readily or with difficulty.

c. Whether the flame produced is self extinguishing or sustained.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method Prepared By:

Army - ME - 1986

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