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3.1.1       The height of the door handle and the seal varies depending on the type of CTU and the design of the door. Rigid vehicles and trailers are generally lower within a range of 1.1 and 1.6 m from the ground. Freight containers containers carried on a trailer will have the security cam fitted seal approximately 1.4 m from the ground, but the handles and any seals attached to them at a height of approximately 1.9 m (see figures 5.9 and 5.10).

3.1.2       Seals attached to handles on container doors (approximately 1.9 m above the ground) will be about head height for the average person and attempting to cut through a bolt seal at that height is likely to result in a musculoskeletal injury.

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3.1.3.2       When gripping the cutting tool, the wrist should be kept as straight as possible.

3.1.4       Figure 5.11 shows a typical example of how many seals are actually cut. The operator has his back bent, the seal is well below the height of the elbow, the arms are almost straight and the left wrist is cocked, while the right appears to be straight.3.1.3.3       The best position of the cutting head will be approximately 0 to 15 cm above the height of the elbow. The height above ground level to the elbow for the average (western) man is 109 cm. This means that the best position for the seal will be between 109 and 124 cm (1.09 and 1.24 m) above standing level.

3.1.4       Figure 5.11 shows a typical example of how many seals are actually cut. The operator has his back bent, the seal is well below the height of the elbow, the arms are almost straight and the left wrist is cocked, while the right appears to be straight.

Figure 5.11 Cutting the seal

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