Page 42 - Confined Space Training - Student Manual 2021

• If the device is operated from a power source, a backup manual source must be provided.
Applied force must be limited to 150% of maximum capacity. Maximum rate of lowering
must be 6.6 feet/second.
• Must withstand a static load of 3,100 pounds, as well as a static load equal to four times
the maximum capacity of the hoist
• The maximum force to raise or lower the load is 30 pounds
• Must provide a secondary brake that stops the load within 24 inches if the primary brake
is disabled
• Synthetic rope and webbing must be made of virgin synthetic material with strength; again,
abrasion resistance and heat resistance characteristics and must have a minimum
breaking strength of 4,500 pounds. Wire rope must be made of stainless or galvanized
steel and have a minimum breaking strength of 3,400 pounds

Self-Retracting Lifelines
Look for cuts, frayed strands and excessive wear in the line and damage to the housing. If the
unit needs service, check the manufacturer’s recommendations. Do not try to repair it yourself.
ANSI Z359.1 requires specific functions of operation. A rescue self-retracting lifeline (RSRL) must
include the following:
• Must engage into rescue mode at any time and must not be able to inadvertently change
to or from rescue mode
• Must automatically stop and hold the load if the rescuer relinquishes control while in rescue
mode
• Must have a means to stabilize the device during use in rescue mode
• Must stop load when operation control is released within four inches of travel

BODY BELT/HARNESS INSPECTION

Belts and Rings
Starting at one end, hold the body side of the belt toward you. Grasp the belt with your hands 6
to 8 inches apart. Bend the belt in an inverted U. The surface tension resulting makes damaged
fibers or cuts easier to see. Follow this procedure the entire length of the belt or harness.

D-Rings
D-rings and the metal ear pad should be checked for distortion, cracks, breaks and rough or sharp
edges. The D-Ring bar should be at a 90-degree angle with the long axis of the belt and should
pivot freely.

Attachment of Buckles
Special attention should be given to the attachment of buckles and D-Rings. Note any unusual
wear, frayed, or cut fibers or distortion of the buckles or D-Rings. Rivets should be tight and
immovable with fingers. Body side rivet base and outside rivet burr should be flat against the
material. Bent rivets will fail under stress.

Confined Space Training for Entrants, Attendants & Supervisors 42