MIL-HDBK-1005/16
b)
Separation of ship's domestic wastes from the
industrial wastes generated by drydock activities. These
industrial wastes include leakage, precipitation runoff, and
washdown that carries sandblasting residue and paint.
4.3.1
Layout. Ships fitted with Collection-Holding-Transfer
(CHT) should be connected to dockside sanitary sewers for CHT
discharge. Ships without CHT should use scuppers and manifold
connections to the ship's discharge points for transfer to
sanitary sewer system in floor of drydock. See Figure 8 for
typical collection system layout in drydock facilities to collect
from CHT systems. Use receiving connection on pressure manifolds
connected to gravity sewers.
4.3.2
Pump Station Features. Make capacity equal to that of
maximum combined ship's discharge rate of ships in drydock.
Furnish portable auxiliary pumping facilities when required.
Refer to MIL-HDBK-1029/1, Graving Drydocks.
4.3.3
Sewage Receiving Connections and Transfer Hoses. See
Figure 9 for underground drydock receiving hose connections. See
Figure 7 for aboveground drydock receiving hose connections.
Aboveground receiving hose connections should be used whenever
possible. See paragraph 4.2.8 regarding transfer hoses.
4.3.4
Special Structures and Appurtenances.
See Figure 4 for
typical cleanout detail for drydock sewers.
Locate cleanouts in main sewer at a maximum spacing of
300 feet (91 m).
60
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