介绍美国职业安全与健康管理局高处作业安全管理规程精选.pptVIP

Warning-Line System The rope, wire or chain shall have a minimum tensile strength of 500 pounds. The line shall be attached so that pulling on one section of the line will not result in slack being taken up in adjacent sections. Employees are not permitted between the roof edge and warning line unless performing roofing work in that area. 1926.502(g) Controlled Access Zones 1926.502(g)(1) Controlled Access Zones - Leading Edge Extends parallel along the unprotected or leading edge. Control line connected to guardrail system or wall. Line situated not less than 6 feet nor more than 25 feet from edge. Consists of ropes, wires, and tape with a minimum breaking strength of 200 lbs. and is marked with high visibility materials at not more than 6 foot intervals. Stanchions rigged so that the lowest point is not less than 39 inches nor more than 45 inches. 1926.502(g)(1) Controlled Access Zones - Leading Edge (cont’d) Control line erected not less than 6 feet nor more than 60 feet, or half the length of the member being erected, whichever is less, from the leading edge. 1926.502(g)(1) Controlled Access Zones - Precast Concrete Lines erected not less than 10 ft. nor more than 15 ft. from the working edge. Lines extended to enclose all employees performing overhand bricklaying and related work. Lines erected at each end to enclose zone. Only employees engaged in work permitted in zone. 1926.502(g)(1) Controlled Access Zones - Overhand Bricklaying 1926.502(h) Safety Monitoring Systems Safety-Monitoring System Competent person to monitor Warns employees nearing hazard On same walking/working surface Within visual Contact Able to communicate orally with workers No mechanical equipment used or stored in safety-monitoring system area A shout may be the last thing a worker hears as he or she hurtles to the ground. 1926.502(i) Covers 1926.502 (i) Covers 1926.502 (i) Covers 1926.502 (i) Covers 1926.502 (i) Covers Capable of supporting twice the maximum axle load. Capable o