MIL-PRF-2863C(SH)
e) Twenty cycles of thermal and pressure shocks caused by sudden changes
of the circulating water from 10 psi and 70°F to 30 psi and 200°F.
Tube movement is not conducted between each cycle. Prior to changing
from one condition to another, the following criteria shall be met:
the test fixture shall remain at a temperature/pressure condition for
1 hour or until the tube sheets stabilize at temperature for 20
minutes, whichever is longer. Record which criteria is limiting.
4.4.4 Visual examination. Packing materials shall be visually examined for
the workmanship attributes specified in 3.8.
4.4.5 Tolerance and weight measurements. Tolerance measurements on the
inside diameter, outside diameter and length shall be accomplished using a
calibrated dial or digital caliper having a precision of at least 0.001 inch.
Weight measurements shall be accomplished using a calibrated balance having a
precision of at least 0.00002 pounds (0.01g).
4.5 Toxicity. To determine conformance with the requirements of 3.9, the
material shall be evaluated via a Health Hazard Risk Assessment (HHRA)
performed at the Navy Environmental Health Center (NEHC) (see 3.9, 6.2 and
6.6).
5.
PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be
as specified in the contract order (see 6.2). When actual packaging of
materiel is to be performed by DoD personnel, these personnel need to contact
the responsible packaging activity to ascertain requisite packaging
requirements. Packaging requirements are maintained by the Inventory Control
Point's packaging activity within the Military Department or Defense Agency,
or within the Military Department's System Command. Packaging data retrieval
is available from the managing Military Department's or Defense Agency's
automated packaging files, CD-ROM products, or by contacting the responsible
packaging activity.
6.
NOTES
(This section contains information of a general or explanatory nature
that may be helpful, but is not mandatory.)
6.1 Intended use. Grade A rings are intended for use for packing steam
condenser tube header boxes in main-condenser type applications which utilize
seawater coolant. Grade B rings are intended for use for packing steam air-
ejector-condenser type stuffing boxes where freshwater coolant is used.
6.2 Acquisition requirements.
Acquisition documents are required to 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 2.2 and 2.3).
c) Grade required (see 1.2).
d) Size of metallic and non-metallic rings required (see 3.3).
e) Inspection conditions, if other than as specified (see 4.1).
f) Number and composition of rings required (see 6.7).
g) Packaging requirements (see 5.1).
h) Material safety data sheet requirements (see 6.4).
i) Part or identifying number (see 6.5).
j) Toxicity conformance (see 4.5 and 6.6).
6.3 Qualification. With respect to products requiring qualification, awards
will be made only for products which are, at the time of award of contract,
qualified for inclusion in Qualified Products List No. 2863 whether or not
such products have actually been so listed by that date. The attention of the
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