Oxygen Deficiency Hazard Monitoring and Alarm Unit Will Not Enunciate if Oxygen Level is too Low
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Type:  Lessons Learned

Publisher:  Brookhaven National Laboratory, Upton, NY

Published As:  Public

Date: 

Topics:  Respiratory Protection, Occupational Safety and Health, Compressed Gas/Air

While undergoing testing at Brookhaven National Laboratorys Collider-Accelerator Department, it was found that an Oxygen Deficiency Hazard monitoring and alarm unit will not enunciate at a low oxygen condition using its alarm relay output if the oxygen level goes too low. The manufacturer has reproduced and confirmed BNLs results.

Lessons Learned: An external system (relays or PLC) with a different power source to enunciate alarms is required if the unit fails to activate its alarm (low O2) condition or has some kind of system failure (power loss, O2<5%, low flow, etc.)

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