TM5-4220-231-14&P OPERATION PROCEDURES  (OP) FOR DIVINGOPERATIONS OPERATOR CHECKLISTOP 3 DATE-/-/- STARTTIME END   TIME OPERATOR1 OPERATOR 2 LOCATION STEP ITEM LOCATION ACTION PERFORMED CHECKED I^BY BY POST-DIVE SHUT    DOWN   OP   3.1 (Cont.) 3.1.16 AHP-V403 DACC    -   HP,  LP, Close CW. ALP-V404 and     Console Close CW. ALP-V414 Pressure Gage Close CW. Isolation Valves AHP-V407 Close CW. ALP-V408 Close CW. 3.1.17 ALP-V411 DACC- Close CW. ALP-V412 Control Panel Close CW. 3.1.18 ALP-V504 VTA  - Slowly     open     CCW. Drain    valve Allow    moisture to   drain. Close CW. 3.1.19 ALP-V509 VTA  - Close CW. Control Panel 3.1.20 SDASS Bleed all  umbilicals down from diving     helmets. Remove all   umbilicals. (Air  and Pneumo hoses), HP,   LP,  and Interconnecting hoses from system. Replace protective caps as each hose is  disconnected. 3.1.21 SDASS Perform After    Operation PMCS IAW  Table     2-1. Conducted By: Rank: Date/Time Verified By: Rank:, Date/Time Supervisor: Rank:. Date/Time 2-52 Change 6