AC Tool Supply 3M Full Body Harnesses Інструкція користувача - Сторінка 6

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Clearance Requirements

The illustration below is an example of how to calculate the fall clearance requirements using

energy absorbing lanyards connected to the dorsal D-ring of a Full Body Harness. Add the

length of the energy absorbing lanyard (6 ft) to the marked maximum elongation of the lanyard

during deceleration (3½ ft per OSHA 1910 & 1926), to the D-ring height of the worker (average

5 ft). Add 1 ft for the harness stretch and slide of the D-ring, and a safety factor of 2 ft to

allow for the possibility of an improperly ﬁ tted harness, a taller than average worker and/or a

miscalculation of distances. The total 17½ ft is the suggested safe fall clearance requirement for

this example.

Caution: If an energy absorbing lanyard is used in conjunction with a cross-arm

anchorage connector, other anchorage extension, vertical lifeline, or horizontal lifeline, the

additional length of the anchorage connector, or sag from the lifeline must be taken into

consideration during the clearance calculation process.

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