A-A-52462 Containers, Shipping And Storage: Metal, Reusable; For Engines, Transmissions, Differentials, Transfers, And Similar Assemblies \(Metric\)This CID covers two types of leakproof, pressurized, metal, reusable containers/boxes \(hereinafter referred to as containers\). They are used as humidity controlled containers for shipment and storage of automotive engines, transmissions, differentials, transfers, and similar assemblies. The two types of containers are classified as follows \(see 5.2\): Type I - Pressurized container. Type II - Controlled breather container.

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A-A-52462A

2.3 Welding. Unless otherwise specified (see note b), welding shall conform to TACOM

Drawing 12479550, "Arc Welding Procedures for Constructional Steels". All fluxes, acids, and

flux solvents shall be removed prior to preparation for painting. Peening of weld in any

pressurized area shall not be permitted. Defective areas of weldments shall be removed and then

rewelded. Reworked containers shall conform to all requirements of this CID.

2.4 Performance. The containers shall be capable of meeting all performance requirements

when used under simulated shipping and storage conditions as specified herein. When specified

(see 5.2), the contracting officer may substitute the manufacturer's test procedures for any of the

performance tests specified herein.

2.4.1 Air leakage. The containers shall be equipped with a method to read and monitor their

internal pressure. Each container shall show no evidence of air leakage when pressurized to the

following air pressures:

Type I - 69 kilopascals (kPa)

Type II - 34.5 kPa

2.4.2 Rough handling. Containers when loaded shall be capable of protecting its contents from

damage due to shipping and rough handling operations. This shall be evident after the "loaded"

container has been subjected to the following drop, impact test, and the leakage test repeated.

(Note: Unless otherwise specified (see 5.2) a dummy load of the same size weight and weight

distribution of the component line load for which the container is designed shall be used.)

2.4.2.1 Edgewise drop test. The packed container shall be supported at one end of its base on a

wood sill or block, 15 centimeters (cm) in height, and placed at right angles to the skids. The

opposite end of the container shall be raised and allowed to drop freely from heights of 30, 60,

and 90 cm successively onto a concrete or metal surface. The test shall be applied to each end of

the container. If the size of the container and the location of the center of gravity are such that

drop tests cannot be made from all of the prescribed heights, the greatest attainable height shall

be the height for succeeding drops until a total of three drops have been accomplished.

2.4.2.2 Cornerwise drop test. The packed container shall be supported at one corner of its base

on a block, 15 cm in height. A block, 30 cm in height, shall be placed under the other corner of

the same end of the container. The lowest point of the opposite end of the container shall then be

raised and allowed to fall freely from heights of 30, 60, and 90 cm successively onto a concrete

or metal surface. If the size of the container and the center of gravity are such that drop tests

cannot be performed from all the prescribed heights, the greatest attainable height shall be the

height for succeeding drops until a total of three drops have been performed. This test shall be

applied on two diagonal corners at the bottom of the container.