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SEL Number: 01AR-01-SCCC
Title: Respirator, Full-Facepiece, Closed-Circuit, Self-Contained (Re-Breather)

Last Updated: 7/8/2022 12:17:41 PM

Previous SEL Number: 01AR-01-SCCC

Description: Full-Facepiece Self-Contained Breathing Apparatus that recirculates the breathing air through the apparatus and purifies it, removing carbon dioxide and adding fresh oxygen. The wearer is supplied with air that has been oxygen enriched.

ImportantFeatures: The closed-circuit SCBA consists of a full facepiece, respirable breathing gas container, supply of respirable breathing gas, gas pressure or liquid level gauges, timer, remaining service life indicator or warning device, hand-operated valves, breathing bag, safety relief valve / system, and harness. Closed-circuit SCBA are typically rated for 4 hour usage time.

Operating Considerations: There are no current approvals for use of closed-circuit SCBA s inside fully-encapsulated suits per NFPA 1991.
Closed-circuit (CC) SCBA s are designed to protect personnel in hazardous, toxic, or oxygen-deficient environments. They are used by first responders (fire, police, EMS) and military personnel in a wide range of operations including HazMat remediation, mine and tunnel rescue, security operations, and special missions. The lighter weight and longer usage rating of the CC-SCBA are critical in missions such as mine rescue.

There is currently no CBRN standard for this type of respirator. Until such a standard becomes available, purchasers are urged to carefully review test data collected by manufacturers.

A NIOSH prohibition exists (see Federal Register Vol. 50, No. 222, pages 47456 – 47457 dated November 18, 1985), for entry into high radiant heat and open flame environments while wearing a pure oxygen, positive pressure CC-SCBA . While NIOSH-approved CC-SCBA s are required to have some high radiant heat and open flame resistance characteristics, these requirements are not sufficient to sanction use in high radiant heat and open flame environments unless NIOSH repeals the prohibition. The only exceptions to this prohibition are obtained through additional optional testing.

Training Requirements: Core Training: NFPA 470, Chapter 6, 8, 10 as applicable, OSHA 1910.120, OSHA 1910.134, NFPA 1404.
Initial Training: Extensive (>2 days)
Sustainment Training: Extensive (>2 days)

Mandatory Standards:

Applicable Standards and References:

  • Law Enforcement: Forensic Technician
  • Law Enforcement: Maritime
  • Law Enforcement: SWAT/Tactical Team
  • REL: Full Canadian Recommended Equipment List
  • REL: LOS-1, Multi-Agency Intervention
  • REL: LOS-2, Scout/Reconnaissance Mission