EMERGENCY PROCEDURES

TM-10-8415-208-12 Self-Contained Toxic Enviroment Protective Outfit-Interim (STEPO-1) Manual
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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. 2-36

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