BB-E-2879A
testing (see 4.5.2) shall be conducted by the Government. The salt fog test (see 4.5.4) shall be
performed at the manufacturer's own facility or any other facility that can perform this test, unless
disapproved by the Government. Failure of any examination or test shall result in first article
disapproval.
4.3.1 First article test sample. Test samples and other information required shall be
representative of production units and shall consist of the following:
a. Twelve fire extinguisher assemblies for fragmentation resistance testing.
b. Twenty-four fire extinguisher assemblies for all other examinations (inspections) and
testing. Twelve of the twenty four assemblies are to be used for the "One-year time
leakage test" in accordance with UL154. The one-year leakage test specified in
UL154 can be accelerated through leak detection methods versus weight loss detection.
c. Identification of material used in construction of the cylinder (see 3.2.1).
d. A certified test report showing that the fire extinguisher conforms to the requirements
of this specification, UL154, and UL711.
The following components shall be tested separately and the test results shall be included in the
submitted test report:
1.
Twelve frangible discs
2.
Twelve valves
3.
Six horns
4.4 Quality conformance inspection. Quality conformance inspection shall consist of all tests
and inspections specified in table I. Unless otherwise stated in the test method, room temperature
shall be defined as 70° ±10 °F and relative humidity as 50 ±10 percent. Sampling for quality
conformance shall be in accordance with ASQC-Z1.4, Inspection Level S-1. There shall be no
defects.
TABLE I. Quality conformance inspections.
Requirement
Requirement
Inspection
Test Method
Description
Paragraph
Paragraph
Design and
3.3
-
UL154
Construction
Assembly
3.4
4.5.1
-
Crash retention
3.6
4.5.3
-
Performance
3.7
-
UL154 and UL711
Vibration
3.9
4.5.5
UL154
Rough usage
3.10
4.5.6
UL154
Cylinder age
3.11
-
-
Identification
3.12
-
UL154
4.5 Inspections.
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