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TM 746-10
IC-1, IA-8, and IA-15 with additional protection prior to
(3) Unit pack items method I which do not
placing in a wood or plywood shipping container to
have exposed, critical, machined finished surfaces and
prevent abrasion of the barrier material. Provide the
are not precision equipment and have been partially or
additional protection by use of an overwrap of
completely coated with a preservative. Accomplish
greaseproof, waterproof barrier material or by placing
sealing of openings and cushioning, blocking, and
the bagged item into a box fabricated from weather-
bracing as described for method III in (2) above.
resistant fiberboard.
(4) Unit pack items that have exposed, highly
d. Packing. Place a quantity of the same item in a
machined-finished surfaces and have been partially or
plywood, wood, or fiberboard box.
completely coated with a preservative and metallic and
e. Marking. In addition to any special markings,
nonmetallic items that require protection from moisture
mark as prescribed in paragraph 3-5.
by submethod IC-1 or submethod IC-2. Base the
selection of the submethod on the weight of the items.
5-166.
Unserviceable, Economically Reparable
Pack items weighing up to 10 pounds by submethod IC-
1. Provide items having sharp corners, protrusions, or
Retrograde Materiel
weighing over 2 pounds with an additional wrap of
greaseproof, waterproof barrier material or cellulosic
Clean, dry, preserve, package, pack, and mark the
cushioning material prior to placing the items into the
same as for serviceable retrograde materiel described in
bags.
the identification markings as discussed in paragraph 3-
(5) Unit pack precision instruments, precision
5.
equipment, and items with critical, machined surfaces,
with or without preservatives, submethod IA-8, IA-14,
5-167. Serviceable Materiel to be Recycled
IA-15, or IA-16. Weight limitations and cushioning
instructions described for submethod IC-1 in (4) above
Clean, dry, preserve, pack, and mark the same as for
are also applicable when submethod IA-8 is used.
serviceable retrograde materiel described in paragraph
Provide submethods
5-165.
Section XXIII. ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) MATERIEL
item can be used for the purpose for which it was
5-168. General
designed.
a. This section provides instructions for the
5-169. ESD Field Service Kit
preservation and packing of all retrograde, serviceable,
economically reparable electronic items that are
a. All field unit packaging and unpackaging of
susceptible to damage or deterioration from ESD,
including all circuit cards and items within FSCs 5905,
ESDS materiel shall be accomplished by using an ESD
5955, 5961, 5962, 5963, and 7042.
field service kit. ESDS items shall not be removed from
the unit container until the device is being installed in
b. Many electronic devices are highly susceptible
the end item or the next higher assembly and a field
to damage and deterioration from ESD even at levels
service kit is available.
which can be neither seen nor felt. ESD affects many
b. The complete ESD field service kit shall consist
components such as transistors, integrated circuits, and
of a wrist strap, portable conductive table mat, and a
metal oxide semiconductors. Device failures are not
grounding device for the mat. Materials and instructions
always immediately catastrophic or observable. The
component is often only slightly weakened, but it is less
are shown in figure 5-8.
able to withstand subsequent ESD exposure and may
c. Unpreserved ESDS items shall be handled only
fail with continued use. Packaging, handling, and
by trained personnel who can effectively employ the
maintenance personnel are the prime carriers of static
protective materials and equipment provided.
electricity and its enormous potential for damaging
sensitive devices. Activities such as walking, working at
5-170. Packaging
a bench, sitting on a chair, or simply combing your hair
can generate thousands of volts of electricity.
a. Select all ESD packaging materials from
Awareness and control of this phenomenon shall be
appendix A of this manual.
maintained throughout the packaging process to
b. Accomplish cleaning by process C-1 and
positively ensure that the
perform drying by procedure D-1 of MIL-P-116.
5-28
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