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|  MIL-D-18641F(SH)
5.2.1 Levels A, B, and C with type, class, and style selection at the option of the contractor.
The distillation unit shall be packed in a sheathed crate conforming to MIL-C-104. When specified
(see 6.2), for levels B and C only, packing shall be in unsheathed crates conforming to MTLC-
132 or MIL-C-3774. The closure and strapping of containers and the anchoring, blocking, bracing,
cushioning and waterproofing of container contents shall be in accordance with the applicable
container specification or appendix thereto.
5.2.1.1 Detached accessories. Detached accessories, preserved as specified in 5.1.1.1 shall be
packed in boxes conforming to class 1 of PPP-B-621 or PPP-B-601 (domestic) and secured within
the shipping containers with the complete unit.
5.2.2 Commercial. Distillation units, preserved as specified in 5.1, shall be individually packed
in accordance with ASTM D 3951.
53 Marking. In addition to any special marking required (see 6.2), for levels A, B, and C,
interior and exterior shipping containers shall be marked in accordance with MIL-STD-129,
commercial containers in accordance with ASTM D 3951.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is
not mandatory.)
6.1 Mended use. The distillation units specified herein are for making fresh water from sea-
water in Naval shipboard installations with heated distillation units using low pressure steam or
hot fresh water.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a
Title, number and date of this specification
b.
Issue of DODISS to be cited in the solicitation, and if required, the specific issue of
individual documents referenced (see 2.1.1 and 2.2)
Type of distillation unit to be supplied (see 1.2.1)
c.
d.
Class required (see 1.2.2)
e.
Level of resistance to mechanical shock (level A should be specified if operation of the
distillation unit is necessary to allow the ship to complete its immediate operation and
to allow it to return to port) (see 3.2)
MTBF and MTTR (see 3.6)
f.
Size and weight limitations, if applicable (see 3.10)
g.
h.
Limiting steam consumption for types 1, II, or III (low pressure steam for evaporators
or salt water heater and high pressure steam for air ejectors) (see 3.121)
53
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