Postdrive Procedures

TM 5-4220-225-14 Table 2-6. Doffing Procedures (Cont). Step Procedure WARNING Ensure the air supply valve is open slightly and the exhaust valve is fully open before placing the helmet on the diver. 4. DIVER PREPARATION a. Carefully place the helmet over the diver's head and press firmly into place. Lock the pins securely. b. Fasten umbilical spinnaker-type shackel to harness V-ring. c. Perform communication check with topside and partner, if applicable. 2-18. Postdrive Procedures. The procedural steps required for systematic accomplishment of postdive actions are separated into two procedures and presented in Table 2-7, Postdive Procedures. Daily Postdive Procedures, addresses those steps required for proper equipment care and repair at the end of a diving day, and Mission Postdive Procedures, emphasizes procedures required less frequently than daily but must be accomplished with an assured regularity to preclude equipment failure. Mission postdive procedures are to be performed at the end of a dive sequence (mission) or once a week, whichever occurs first. Mission postdive procedures must include all postdive procedural steps, both daily and mission requirements, to ensure completeness of equipment preparation before further usage or stowage. All items and steps must be accomplished upon mission completion. The dive supervisor may deem it necessary to perform some daily or mission procedure steps more frequently. The table must be considered only as guides to minimum requirements, not as all-inclusive. Table 2-7. Postdive Procedures. Step Procedure NOTE Report any discrepancies to the diver supervisor. 1. HELMET CLEANING a. Clean the helmet interior with an approved cleaning agent. The major cleaning points are: (1) Chin button (2) Area surrounding the microphone (3) Front viewport (4) Air supply diffuser and ear clearing pad (5) Front helmet base interior 2-50