PS Magazine - TB 43-PS-726
PS, The Preventative Maintenance Monthly
ISSUE 726
MAY 2013
56
PS 726
MAY 13
•±
Clean and dry the item.
•±
Select and apply a preservative coating to the item or parts of it. The manufacturer
normally applies permanent preservative coatings to ESDS items.
•±
Apply a greaseproof wrap only if a soft, dry preservative was applied to the item.
•±
If greaseproofing is not required, apply a neutral wrap using a noncorrosive, dust-
protective wrap prior to or as part of unit packing.
•±
Place the item (wrapped and cushioned, as required) into a close-fitting, heat-sealed
bag that meets specifications listed in MIL-PRF-131,
Barrier Materials, Watervaporproof,
Greaseproof, Flexible, Heat-Sealable.
•±
Mark the bag in accordance with MIL-STD-129,
Military Marking for
Shipment and Storage.
This is the
fifth
article
in a monthly series,
which began with
“Clearing the Methods
of Preservation Maze”
on Pages 52-53 in
PS
7
22 (Jan 13).
submethod 41
protects
metallic and nonmetallic
items against deterioration
caused by water, water vapor,
or natural or industrial
contaminates and pollutants.
items packed by
Submethod
41
are generally lightweight
and flat. They should be
easily inserted into flat or
envelope-type bags.
insert the item wrapped and
cushioned as necessary into a
water- and vapor-proof bag,
remove the excess air and
close the bag.
Packaging…
For several
months now,
we’ve walked
you through
a
maze.
it’s a maze caused
by
confusion
over
the different kinds
of military packaging
preservation options.
you may also be able to
exit the maze through…
This month we’ll
explain packaging
preservation
Method 40.
method 40 requires the
use of water- and vapor-
proof protection (with
preservative, as required).
This method is also used
for items such as circuit
cards that are
electrostatic
discharge sensitive
(ESDS).
for more
on ESDS
items,
see pages
48-54 in
PS
7
19
(oct 12).
it’s the
fourth
possible way to
“exit the maze”
of packaging
preservation
choices.
Exiting the
Methods of
Preservation
Maze:
Method 40
Item
cleaned,
dried, and
preserved
Wrap item in
greaseproof
barrier
Heat seal
package
Form heat
seal bag
Identify
completed
unit pack
Cushion
wrapped
item
726 56-57.indd
1-2
4/3/13
12:11 PM
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