MIL-DTL-17813H
f.
Halogen leak
g.
Mass spectrometry
h.
Air jet
i.
A parallel/lateral force deflection test may be specified to verify force deflection
requirements in certain critical applications such as steam or gas turbine applications
and shall meet the requirements of 3.5.2. (Note: This parallel/lateral test is expensive
and should only be required when necessary).
4.9 First article test documentation. The manufacturer shall record and document each first article
test performed. This documentation shall be available to the government contracting officer (see 6.2.1).
Documentation shall include, but is not limited to the following:
a.
The drawing number of the expansion joint.
b.
Mill test reports of materials used in the joint.
c.
Hydrostatic test pressure.
d.
The qualifying rated compression, extension, lateral offset, or angular rotation.
e.
Report of the number of complete cycles obtained.
f.
Report of pressure test, or other leakage test performed after completion of the cyclic
endurance test.
g. The adjusted internal pressure during the cyclic endurance test.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor
personnel, these personnel need to contact the responsible packaging activity to ascertain packaging
requirements. Packaging requirements are maintained by the Inventory Control Point's packaging
activities within the Military Service or Defense Agency, or within the military service's system commands.
Packaging data retrieval is available from the managing Military Department's of 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. The bellows expansion joints covered by this specification are intended for steam,
water, oil, or gas piping services which require the absorption of movement resulting from the thermal
expansion of piping or other factors.
6.1.1 Types of joints. The types of bellows expansion joints listed under 1.2 are basic constructions.
Arrangements of this basic type vary with the individual requirements of each application. The most
common arrangement is one, which absorbs axial movements. Joints of this type are sometimes suitable
for the absorption of small amounts of lateral deflection. Movement other than axial motion, can be
absorbed by expansion joints of special arrangement as indicated by the following examples:
a. Hinged expansion joint An expansion joint designed to permit angular rotation in one
plane only by the use of a pair of pins through hinge plates attached to the expansion
joint ends.
b. Gimbal expansion joint An expansion joint designed to permit angular rotation in any
plane by use of two pairs of hinges affixed to a common floating gimbal ring.
c. Universal expansion joint An expansion joint containing two bellows joined by a
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