MIL-STD-2042-3 Fiber Optic Cable Topology Installation Standard Methods For Naval Ships Cable Penetrations Part 3 Of 7 PartsThis standard practice provides detailed methods of optical fiber cable penetrations through ship structure and equipment via stuffing tubes, swage tubes, multiple cable penetrators, chafing collars and nipples.

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MIL-STD-2042-3B(SH)

1.  SCOPE

METHOD 3A1

CABLE PENETRATIONS VIA METAL STUFFING TUBES

1.1  Scope.  These methods identify stuffing tube sizes used to pass optical fiber cables through decks and bulkheads.  The methods for installation of the stuffing tubes is the same as those specified for electrical cables in MIL-STD-2003. These installation methods are not repeated in this standard practice but they are identified in paragraph 5 in this part of this standard practice.

2.  REQUIRED EQUIPMENT AND MATERIALS. (Not applicable.)

3.  PROCEDURES.

3.1  Safety summary. The following safety precautions shall be observed during the passing of optical fiber cables through the installed stuffing tubes:

a.   Safety glasses shall be worn when handling bare fibers.

b.        Do not touch the ends of fibers as they may be razor sharp.  Wash your hands after handling bare fiber.

c.   Observe the warnings and cautions on equipment and materials.

d.        When visually inspecting an optical fiber, never stare into the end of a fiber connected to a laser source or LED.

e.        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.

3.2  Procedure I.  Method 3A1-1-Metal stuffing tubes for submarines.

Step 1 - Select a steel stuffing tube from those shown in tables 3A1-I and 3A1- II.

TABLE 3A1-I.  Steel stuffing tube sizes for optical fiber cable (Submarines).

3Al-l                               METHOD 3Al