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|  MIL-P-27431B(USAF)
5.2.1 Level A. Purging Kit packaged as specified in 5.1.1 shall be packed in
shipping containers conforming to PPP-B-601, Styles A or B, Class overseas unless
otherwise specified by the contracting activity. Insofar as practical, exterior
shipping container shall be of uniform shape, size, minimum tare and cube consistent
with the protection required.
5.2.2 Level B. Purging Kit packaged as specified in 5.1.1 shall be packed in
shipping containers conforming to PPP-B-636, class weather-resistant, unless
otherwise specified by the contracting procuring activity. Other requirements as
specified in 5.2.1 apply.
5.2.3 Level C. Packing shall be applied which affords adequate protection
during domestic shipment from the supply source to the first receiving activity.
This level shall conform to applicable carrier rules and regulations.
The Purging Kit shall be packed in accordance with
5.2.4 Industrial.
ASTM-D-3951-82.
5.3 Marking. In addition to any other markings required by the contract or
order (see 6.2), interior and exterior containers shall be marked in accordance with
MIL-STD-129.
The following precautionary marking shall appear
5.3.1 Precautionary marking.
on each package:
CAUTION:
DO NOT ALLOW CONTAMINATES OF ANY KIND TO BE USED ON OR ABOUT THE
PURGING KIT.
6. NOTES
6.1 Intended use. The purging unit is intended for use in conjunction with a
low pressure gaseous servicing trailer and a mobile or fixed source of 115V 60 or 400
cycle electrical power to flush aircraft liquid oxygen converter systems with heated
oxygen gas in order to remove moisture and other contaminants from the system.
6.2 Ordering data.
Contracting documents should specify the following:
a. Title, number, and date of this specification.
b. Applicable levels of preservation and packaging, and packing
(see section 5).
c. When special shipment marking is required (see 5.3).
6.3 First article. When first article inspection is required, the item should
be a first article sample or may be a standard production item from the contractors
inventory. The first article shall consist of one complete assembly and one
additional heat exchanger assembly. A first article test report shall be prepared.
The contracting officer will include specific instructions in acquisition documents
regarding arrangements for examinations, approval of first article test results and
disposition of first articles. The contracting activity reserves the right to waive
the requirement for samples for first article inspection to those bidders offering a
product which has been previously acquired or tested by the Government. Bidders
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