48 



DESIGN OF THE SEALAB II HABITAT 



Ten 38-cu-ft scuba bottles with first- stage regulators (removed from Calypso rigs) and 

 quick- connective fittings (female or socket) to be identical with Bibb system fittings installed 

 in Sealab are provided and stored inside entry trunk of Sealab. These bottles may be utilized 

 by the aquanauts to swim to the PTC in the event of emergency evacuation of Sealab. 



AFT TO QUICK -CONNECT 

 OUTLETS (AUTO. SHUTOFF)]^ 

 12 OUTLETS IN ENTRY 

 SPACE a 4 IN LAB SPACE 



EMERGENCY BREATHING MANIFOLD 



3000 PS! H.R 



..R 0-300 PS I 

 (120 PSI NOM) 



FWD, TO QUICK-CONNECT 

 OUTLETS (AUTO, SHUTOFF) 

 12 OUTLETS IN BERTH 

 SPACE a 4 IN GALLEY SPACE 



_S-GAS CONTROL 

 PANEL 



Ij_3- STUFFING TU 



K X > 



n. 



BE 

 <— - HULL (BOT 



TOM) 



He (85%) - 02 (I5%)PREMIX STORAGE, EXTERNAL, 

 3-1300 CUFT BOTTLES ON MANIFOLD 





Fig. Z8. Sealab II bibb system 



Emergency Helium, Air, and Oxygen Systems 



These systems are in accordance with Fig. 29. The emergency helium and air system 

 will be utilized to provide helium or air from the surface in the event of failure or exhaustion 

 of the self-contained helium supply. This system is also used for the surface (initial) charg- 

 ing of Sealab. Gases are supplied through the gas-supply hose of the umbilical cord at 400 psig 

 maximum pressure. The emergency oxygen system is utilized to provide oxygen from the sur- 

 face in the event of failure or exhaustion of the self-contained oxygen system. This system is 

 used as a gas- sampling system for surface monitoring of the Sealab atmosphere. Oxygen is 

 supplied through the gas- sampling hose of umbilical cord of 200 psi maximum pressure. The 

 gas- sampling intake is located in the outlet of the air-conditioning system upstream of the ox- 

 ygen input in order to obtain sampling of well-mixed and filtered atmosphere. An additional 

 gas sampling intake is provided via a 30-ft length of 1/4- in. I. D. hose for sampling at any de- 

 sired point inside Sealab. 



