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)

4. GENERAL REQUIREMENTS

4.1 Cable penetrations. Optical fiber cable penetrations of ship structure shall be made by metal stuffing tubes (see 3.5), swage tubes (see 3.9), multiple cable penetrators (see 3.6), chafing collars (see 3.2), or nipples (see 3.7). Cable penetrations into equipment shall be made by nylon stuffing tubes or integral multiple cable penetrators in accordance with Part 2 of this standard practice. Penetrations of ship structure shall be in accordance with this Part of this

standard practice.

4.1.1 Cable penetration of ship structure. Cable penetration of ship structure shall be in accordance with DDS 100-1, DDS 100-2, the methods described herein, and as follows:

a. Metal stuffing tubes or multiple cable penetrators (MCP's) shall be used for the penetration of the following structures/areas, except that only metal stuffing tubes shall be used to penetrate bulkheads or decks that are exposed to the weather:

(1) Collective protection system (CPS) (see 3.3) boundaries. (2) Watertight cable trunks.

(3) Watertight decks.

(4) Watertight bulkheads.

(5) Bulkheads designed to withstand a waterhead.

(6) That portion of a bulkhead specified to be watertight to a certain height.

(7) That portion of a bulkhead below the height of the sill or the coaming of a compartment access.

(8) Bulkheads surrounding compartments subject to flooding by sprinkling systems.

(9) Garbage disposal rooms. (10) Battery shops.

(11) Medical operating rooms. (12) Medical wards.

b. Metal stuffing tubes only shall be used to penetrate decks and bulkheads forming the boundaries of spaces containing volatile, combustible, or explosive material.

c. Unless otherwise specified, metal stuffing tubes, multiple cable penetrators or nipples and chafing collars packed with plastic sealer shall be used for the following penetrations. The method selected shall satisfy the tightness requirements of the structure.

(1) Decks (non-watertight). (2) Structural bulkheads. (3) Airtight bulkheads.