OPERATIONAL AND EMERGENCY BILLS 153 



4. Completely assemble apparatus for diving. 



5. Check all connections as hanson fittings, hose fittings, mouthpiece "T" tube assembly, 

 exhaust valve and "buddy-breathing" apparatus. 



6. Check the breathing apparatus for leakage by submerging in water. 



Refer to NAVSfflPS 393-0653 Service Manual for "Mark VI Underwater Breathing Appara- 

 tus" for Complete Maintenance Instructions. 



PERSONNEL TRANSFER CAPSULE MAINTENANCE BILL 



The Personnel Transfer Capsule is the means of transport for Sealab subjects between 

 Sealab and the Deck Decompression Chamber. It is the subject's transfer vehicle, which takes 

 him down at the start of his tour and returns him at the end. Further, during the subject's 

 stay in Sealab, the personnel transfer chamber will remain in position near Sealab. It is im- 

 perative that it be maintained in constant readiness. Daily checks should therefore be per- 

 formed by the subjects. 



The following checks are to be made daily: 



1. Water level 



2. Gas sample 



3. Gas bottle pressure 



4. Scrubber operation. 



Water level in the chamber will rise and fall with changes in tide. Water-level checks 

 should be made each day half way between high and low tide. Water level should not be above 

 the grating at half tide. Any helium added to adjust water level should be logged. 



Gas sample will be taken daily through gas- sample hose to the gas control van via the 

 Sealab gas-control panel. 



Gas bottle pressures for He and Oj should be recorded in the log daily. 



Scrubber shall be turned on momentarily each day to check operation. 



PERSONNEL TRANSFER CAPSULE OPERATIONAL BILL 



Gas Manifold 



The gas supply system for the Personnel Transfer Capsule (PTC) is simple, and very 

 flexible. Although designed for operation by the occupants of the capsule, atmosphere control 

 can easily be taken over by topside personnel, once the PTC is on deck, and requirements for 

 external control exist. This is considered to be a remote possibility, occasioned only by ex- 

 tensive delays in the mating procedure or by the necessity of using the PTC for decompression 

 purposes. In normal use, the occupants of the PTC will exercise control of the atmosphere, 

 adhering to the following protocol. 



Normal Use of PTC 



Before entering the PTC, either topside or on the bottom, two aquanauts will check the ex- 

 ternal Ot and He manifold, and open bottle valves to assure that one bottle of each gas is on 

 the line to the internal piping system. In the event of anticipated rise to the surface, without 

 surface support, all bottles must be opened to the manifold. 



