PS Magazine - TB 43-PS-724
PS, The Preventative Maintenance Monthly
ISSUE 724
MARCH 2013
52
PS 724
MAR 13
53
PS 724
Method 20
Method 20 is physical protection with preservative (with greaseproof wrap,
as required).
Use Method 20 primarily on metal items when their characteristics allow application
of a corrosion preventive compound by dipping, Fow coating, slushing, spraying,
Fushing, brushing or fogging.
Items preserved by Method 20
must not be damaged or impaired
when removing preservatives using
solvents, vapor degreasers, or alkali
metal-cleaning compounds.
To
use
Method
20,
apply
a
preservative
coating
to
the
item and, in some cases, add a
greaseproof wrap. The preservative
coating protects the item against
water, salt, gasses or fumes during
handling, shipping and storage.
In Method 20, the entire chemical
protection afforded to the item is
through the contact preservative.
1. Clean and dry the item.
2. Select and apply a
preservative coating to the
item or its parts as needed.
Packaging…
back in january, we introduced you
to a type of maze. it’s the “maze
of indecision” caused by confusion
over the various military packaging
preservation methods.
this month we’ll cover
method
20
, the
second
potential “exit” from
the maze.
in february’s
issue we
explained
method
10.
Method 20 - Preservative Coating Only
(with greaseproof wrap, as required)
Preservative
Greaseproof wrap
MIL-PRF-121
Grade A QQ-A-1876
MIL-PRF-16173 hard preserved items and
MIL-PRF-3420 or MIL-PRF-22019 VCI protected
items may be exempt from wrapping
Using your map of MIL-STD-20
7
3-1,
Standard Practice for Military Packaging,
follow these steps for
Method 20…
I know what to do.
I’ll leave a trail
of
bread crumbs,
just like in that
fairy tale.
now I won’t
get lost.
look,
hansel…
…za
bread
crumbs!
ja! ja!
let’s
collect
zem to
use zo
ve don’t
get
lost.
Exiting the
Methods of
Preservation
Maze:
Method 20
This is the
third
article in a series,
which began with
“Clearing the Methods
of Preservation Maze”
on Pages 52-53 in
PS
7
22 (Jan 13).
halp!
724 52-53.indd
1-2
1/29/13
2:59 PM
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