Tension Limiters
Tension Limiter Systems help reduce injury during recovery and retrival operations. Common applications for Tension Limiters include construction sites, offshore oil rigs, refineries, and wastewater management plants. Hoist tension limiters are connected between a worker and the winch hoist line. If the worker to be rescued experiences excessive loading, the system applies a clutching or braking action that reduces the potential for bodily injury.
Applications
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Confined Space & Rescue
View Confined Space & Rescue -
Drilling Platforms and Oil Rigs
View Drilling Platforms and Oil Rigs -
Water Treatment
View Water Treatment
Design Considerations
- Sealed working component compartment to eliminate potential contamination
- Safety yellow housing for increased visibility
- Ergonomic carrying handle that is certified as secondary dropped objects anchor
- No recertification required unless deployed more than 5 ft. (1.5 m)
- 8 ft. (2.4 m) cable extension to avoid interference
- 310 lb. (141 kg) capacity
- Total deployment of 24 ft.
OSHA Regulations
Rescue and Descent
- Personal Fall Arrest Systems: System performance criteria. In addition to the general requirements in paragraph (c) of this section, the employer must ensure that personal fall arrest systems: 1910.140(d)(1)(i)
- Limit the maximum arresting force on the employee to 1,800 pounds (8 kN); 1910.140(d)(1)(ii)
- Bring the employee to a complete stop and limit the maximum deceleration distance the employee travels to 3.5 feet (1.1 m); 1910.140(d)(1)(iii)
- Have sufficient strength to withstand twice the potential impact energy of the employee free falling a distance of 6 feet (1.8 m), or the free fall distance permitted by the system; and... 1910.140(d)(1)(iv)
- Sustain the employee within the system/strap configuration without making contact with the employee's neck and chin area. 1910.140(d)(1)(v)
- On any horizontal lifeline that may become a vertical lifeline, the device used to connect to the horizontal lifeline is capable of locking in both directions on the lifeline. 1910.140(d)(2)(ii)
- Personal fall arrest systems are rigged in such a manner that the employee cannot free fall more than 6 feet (1.8 m) or contact a lower level. A free fall may be more than 6 feet (1.8 m) provided the employer can demonstrate the manufacturer designed the system to allow a free fall of more than 6 feet and tested the system to ensure a maximum arresting force of 1,800 pounds (8 kN) is not exceeded. 1910.140(d)(3)
- Body belts. Body belts are prohibited as part of a personal fall arrest system.
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