These devices are used by workers in the climbing of poles, trees, towers, and other structures. Minimum performance criteria for arc resistance of harnesses and shock absorbing lanyards are included for workers who may be exposed to thermal hazards of momentary electric arcs or flame.

1.2 Three types of climbers, Types A, B, and C, and two types of climber straps, Types A and B, are covered.

1.3 Two types of body belts, Types A and B, are covered.

1.4 Four types of positioning devices: three positioning straps, Types A, B, and C, and adjustable positioning lanyards are covered.

1.5 Two types of WPFRD, Types A and AB, are covered.

1.6 Two types of harnesses, Types A and B, are covered.

1.7 Two types of shock absorbing lanyards, Types A and B, are covered.

1.8 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.9 The following safety hazards caveat pertains only to the test method portions, 9.2, 10.3, 11.2, 14.4, 15.3, 15.4, 19.2, 22.2, 23, 24, and 25 of these specifications: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.