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|  MIL-S-55257C(CR)
3.15 Railroad transportation. The Electronics Shops shall be capa-
ble of being loaded, blocked and braced on a flatcar for shipment by
rail. When so loaded, the equipment shall be subjected to and withstand
the test of 4.7 without sustaining any permanent damage, such as buck-
ling, crackling, delamination or other permanent deformation.
3.16 Drops, flat and rotational. The Electronics Shops shall with-
stand drops of 18 inches onto concrete. After each drop of 4.8.1 and
4.8.2 there shall be no buckling, cracking, delamination or other perma-
nent damage to the shelter or its components.
3.17 Air Tightness Test. The shelter facility shall show no evi-
dence of air leakage through seams, joints, rivets, etc. of modified ex-
terior surfaces when tested for tightness in accordance with 4.9.
3.18 Interference Suppression. The motors in the blowers, air con-
ditioners and heaters, the fluorescent lighting and the power supplies
used in the Electronic Shops shall meet the emanation limits of
MIL-STD-461 for tactical equipment, if other than those items defined by
the drawings. (See 4.4 & 4.14)
3.19 Mounting inserts. All mounting inserts, unless otherwise
specified, shall be installed without the use of any auxiliary materials
such as adhesive and, when installed, each insert shall be capable of
withstanding the tensile load and the torque load referenced in 4.10.
There shall be no damage or permanent distortion to the shelter mounting
surface or insert head and threads and the inserts shall not have rotated
from their original position. Insert threads shall be free of paint.
(See 3.20)
3.20 Workmanship (See 4.16). The equipment shall be manufactured
and assembled in accordance with the applicable portions of the following
paragraphs:
Construction
3.2
Seal, Water Vapor
3.3
3.4
Cleaning
Finish
3.5
Marking
3.6
Riveting
3.7
Securing of Parts
3.8
Soldering
3.9
Welding
3.10
3.11
Wiring & Cabling
3.12
Electrical Installation
Tropicalization
3.14
Mounting Inserts
3.19
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