PS Magazine - TB 43-PS-725
PS, The Preventative Maintenance Monthly
ISSUE 725
APRIL 2013
56
PS 725
APR 13
57
PS 725
Exiting the
Methods of
Preservation
Maze:
Method 30
This is the
fourth
article in a monthly
series, which began with
“Clearing the Methods
of Preservation Maze”
on Pages 52-53 in
PS
7
22 (Jan 13).
Packaging…
in this packaging series,
we’ve been talking about
a
“maze of confusion”
that’s caused by a
failure to understand
the different kinds
of military packaging
preservation methods.
The
best
guide
to use is MIL-
STD-20
7
3-1,
Standard
Practice
for Military
Packaging.
I don’t
know.
it’s
scary.
I hear
wolveS!
it’s
been
so
long.
guys,
guys!
we can
do
this!
ps
has given
us this map.
now let’s
get
outta
here!
Method 30
preservation requires
using waterproof or
waterproof-grease-
proof protection
(with preservative, as
required).
Packs are appropriate
almost anytime the
item will fit into a
bag, a rigid container
other than all metal,
or as long as only
waterproof or
waterproof-grease-
proof protection is
needed.
However, Method 30
isn’t the right choice
for packaging if water-
vaporproof protection
is also required—in that
case, you must choose
Method 40 or 50.
To use Method 30, place an item
that is preserved, wrapped
and cushioned as needed into a
close-fitting box or carton.
Enclose
that
box, in
turn, in
a sealed
water-
proof
bag.
and
Follow
the
steps on
the next
page…
We’ve already covered
Methods
10
and
20
.
This month we’ll discuss
the
third
packaging
preservation option,
Method 30.
This method is a bit
trickier
than the first
two, so you’ll need
a trusty map to “exit
the maze” of packaging
preservation options
using Method 30.
Preserved
(as required)
Wrapped
(as required)
Cushioned
(as required)
Box
Bag-A-A3174 Type I or II, Grade A, Class 1
MIL-PRF-22191 Type III
MIL-B-22020 as limted by MIL-I-8574
725 56-57.indd
1-2
3/6/13
11:05 AM
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