21.I.08 PFAS - Anchorage System.
The anchorage system consists of the anchorage (the rigid part of the building, facility, structure or equipment) and the anchorage connector.
Anchorage Connectors
Horizontal Lifeline
- Anchorages used for attaching the PFAS must be independent of any anchorage used to support or suspend platforms. They must be capable of supporting at least 5,000 lbs (22.2 kN) per worker attached or designed by a QP for twice the maximum arrest force on the body.
- Anchorage connectors are used to tie the PFAS to the anchorage and must be capable of withstanding without breaking 5,000 lbs (22.2 kN) load per worker attached.
- Steel cable/wire rope guardrails may not be used as a Horizontal Life Line (HLL) unless designed and approved by a QP.
- Note: Do not use electric conduits, utility pipes, ductwork or unstable points as anchorages for PFAS.
- Lifelines.
- (1) Vertical lifeline (VLL). A VLL must have a minimum tensile strength of 5,000 lbs (22.2 kN) attached to a single overhead anchorage. Each worker must be attached to a separate lifeline system.
- (2) Horizontal lifeline (HLL).
- (a) Locally manufactured HLLs are not acceptable unless they are custom designed for limited or site specific applications by a Registered Professional Engineer (RPE) who is also qualified in designing HLL systems.
- (b) Commercially manufactured HLLs must be designed, installed, certified and used under the supervision of QP only, as part of a complete fall arrest system. The CP may (if deemed appropriate by QP), supervise the assembly, disassembly, use and inspection of the HLL systems, under the direction of the QP.
- (c) The design must include drawings, required clearance, instructions on proper installation, and use procedures, proof testing reports and inspection requirements.
- (d) All HLL anchorages must be designed by a RPE who is also qualified in designing HLL systems. > See ANSI/ASSP Z359.6.
- (e) The design of all HLLs must be reviewed and accepted by the GDA as part of the Fall Protection and Prevention Plan.
21.I.09 Positioning System.
Positioning System
A positioning system uses some of the same equipment as a fall protection system (i.e., a harness, etc.), however, a positioning system used alone does not constitute fall protection.
- A positioning system must not be used as a primary fall arrest system. While positioning (working with both hands free), a person must use a separate system that provides back-up protection from a fall.
- System requirements. Positioning System must:
- (1) Be rigged such that a worker cannot free fall more than 2 ft (0.6 m);
- (2) Be secured to an anchorage capable of supporting at least twice the potential impact load of a worker's fall or 3,000 lbs (13.3 kN), whichever is greater;
- (3) Ensure workers achieve 100% tie-off during use;
- (4) The attachment points on the full body harness used in the positioning system must be located on the sides or on the front of the harness.
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21-10. What is required when using positioning systems?
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