MIL-STD-2042-6B(SH)
1. SCOPE
METHOD 6J1
BOF TUBE SEAL VERIFICATION TEST
1.1 Scope. This method describes the procedures for verifying the integrity of blown optical fiber tube end seals.
2. REQUIRED EQUIPMENT AND MATERIALS.
2.1 The equipment and materials in table 6J1-I shall be used to perform this procedure.
TABLE 6J1-I. Equipment and materials.
Description |
Quantity |
Safety glasses |
1 |
Pressure source |
1 |
Isolation valve |
1 |
Pressure gauge |
1 |
Bleed valve |
1 |
BOF tube |
As required |
BOF tube coupler (AA59731-U-8 or AA59731-U-8E) |
As required |
Wipes |
As required |
3. PROCEDURES
3.1 Safety summary. The following safety procedures shall be observed:
a. Safety glasses shall be worn when pressurizing the BOF cable. b. Observe warnings and cautions on equipment and materials.
c. Never look into the end of a BOF tube. Always wear approved safety glasses when handling BOF tubes that may be connected to a pressure source.
3.1 Procedure.
CAUTION: Do not disengage mated BOF tube couplers. Disengaging utilized BOF tube couplers may damage/break the optical fibers contained within the BOF tubes.
Step 1 - Assemble the pressure source, isolation valve, bleed valve, and pressure gauge using BOF tube as shown in figure 6J1-1. Visually verify that the end of all BOF tubes are cut perpendicular to the tube length. Apply an axial load of approximately 22 N (5 lbs) to all BOF tube connections to verify that they are properly engaged.
6J1-1
METHOD 6J1
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