Controlled Descent Devices

Controlled Descent Devices for Emergency Rescue

Controlled Descent Devices are used for for vertical or sloped emergency descent applications when quick extraction from a dangerous situation is vital.   When an emergency requires a cost-effective mode to retrieve workers from high places, controlled descent devices are simple, fast, and safe solutions. Diversified Fall Protection offers a complete OSHA compliant controlled descent device line, including vertical and sloped descent models for complete versatility and flexibility for any job site or work environment.

 

 

 

Design Considerations

  • Requires no power source, special skills, or tools to operate.
  • Secure unit to an anchorage, connect the snap hook to safety harness D-Ring, and step off the structure.
  • Offers rescue capability from up to 200 feet.
  • Systems are built from corrosion resistant materials for maximum durability.

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)
        If the personal fall arrest system meets the criteria and protocols in appendix D of this subpart, and is being used by an employee having a combined body and tool weight of less than 310 pounds (140 kg), the system is considered to be in compliance with the provisions of paragraphs (d)(1)(i) through (iii) of this section. If the system is used by an employee having a combined body and tool weight of 310 pounds (140kg) or more and the employer has appropriately modified the criteria and protocols in appendix D, then the system will be deemed to be in compliance with the requirements of paragraphs (d)(1)(i) through (iii). 1910.140(d)(2)   The employer must ensure that:
      • 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.

Did You Know?

It is the responsibility of the employer to provide a safe, OSHA compliant work environment for all workers?