TM 10-8415-208-12
2-17. OPERATION IN UNUSUAL WEATHER. (CONT)
c.
If the user becomes a casualty of heat stress, they should be removed from the suit immediately If the casualty
is in a contaminated area, evacuate the casualty to an established hotline or an uncontaminated area upwind of
the work site for decontamination and removal of the suit.
2-18. EMERGENCY PROCEDURES
CAUTION
Equipment damage. Disconnect the tether line assembly from the encapsulating protective suit before
leaving the contaminated area. Failure to disconnect the tether line may cause damage to the tether line,
connections and the suit pass through from excessive strain if it got caught on anything. Replacement of
damaged components will be required.
a.
Should the remote air supply fail when using the tether line system, the EBA emergency air cylinder will
automatically provide the user with air. The warning light on the EBA face piece will e begin flashing to signal
the user to leave the contaminated area immediately. The user will have 6 to 8 minutes at 40 liters per minute to
decontaminate and remove the encapsulating protective suit
b.
In the event the rebreather system is not supplying enough air, push the bypass valve button for about two
seconds. The bypass valve allows oxygen to flow past the demand/free flow valve and constant flow restrictor
directly into the breathing chamber. Repeat the use of the bypass valve button as required. If use becomes
frequent, leave the contaminated area immediately
WARNING
Limited oxygen supply in the rebreather system. Leave the area immediately when the alarm whistle
sounds. An audible alarm indicates the oxygen pressure has dropped to 25% or below and about 45
minutes of oxygen is available. Failure to leave the area and decontaminate immediately could result in
personnel death due to suffocation
c.
An alarm whistle will sound for approximately 20 to 45 seconds when the rebreather system oxygen supply
reaches about 25% of operating pressure. The alarm whistle is designed with a tone stem, located on the lower
right side of the rebreather system above the cylinder valve Covering the tone stem causes a distinct change in
the alarm whistle sound. This provides a method of identifying which rebreather system alarm whistle has
sounded when several units are in use. The user of the unit which sounded the alarm whistle must leave the
contaminated area at the first sounding of the alarm whistle. It only sounds once.
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