MIL-STD-2042-2 Fiber Optic Cable Topology Installation Standard Methods For Naval Ships Equipment Part 2 Of 7 PartsThis standard provides detailed methods for the installation of fiber optic cable topology equipment see 3.16, and optical fiber cable entry to fiber optic cable topology and other equipment.

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MIL-STD-2042-2B(SH)

90 Degree angle tube

ASTM F1836M/2

Body

Cap

Packing assembly

"O"-Ring

Locknut

Enclosure wall thickness 19 mm max.

Clearance hole

FIGURE 2G1-3. 90o angle tube.

Step 6 - Screw the locknut onto the body and tighten with a wrench against the "O"-ring sufficiently to obtain plastic to metal contact of the stuffing tube and the enclosure. In cases where this plastic to metal contact cannot be obtained, tighten the locknut until the threads

start to skip. This is considered a satisfactory indication of tightness. (Note: Hold the stuffing tube body while tightening the locknut to prevent turning.) Proceed to step 8 below.

Step 7 - With NPT tubes, screw the tube into the enclosure pipe thread and tighten it sufficiently to obtain a seal at the threads (see figure

2G1-4).

NPT Tube

ASTM F1836M/3

Body

Cap

Cast enclosure wall thickness over

2mm to 19 mm

Packing assembly

NPT

FIGURE 2G1-4. NPT tube.

Step 8 - Measure the distance required to route the BOF tubes from innermost portion of the stuffing tube to the most distant corner of the interconnection box (or to the furcation or end sealing region in the end user equipment). Add approximately 130 mm (5 in) to the distance and mark the BOF cable outer jacket.

Step 9 - Slide the stuffing tube parts onto the BOF cable in the order indicated:

a. Cap

b. Two slip washers

2G1-4 METHOD 2G1