AFT HATCH 



COCKPIT 



SHOWER 



OBSERVATION AREA 

 AND MESS 



Fig. 9.20 Interior layout of BEN FRANKLIN. [From Ref. (16)1 



pressure. Pressure was indicated by a heli- 

 coid compound pressure gage. 



Contaminant Removal 



Contaminant removal was accomplished in 

 the following manner: 



— Continuous passive removal of contami- 

 nants by LiOH and activated charcoal, 

 both of which are provided in the CO2 

 removal panels. 



— Intermittent active removal of contami- 

 nants by the odor removal (Purafil) car- 

 tridge in the toilet. 



— Periodic active removal by the portable 



contaminant removal system (operated 



as needed) containing Kalite, Hopcalite 



and Acamite cannisters. 



Contaminants removed by each of the above 



are the following: 



— LiOH — In addition to its primary func- 

 tion of removing CO2, LiOH also removed 

 acid fumes such as hydrochloric acid and 

 hydrogen sulfide. 



— Activated charcoal — A small quantity of 

 activated charcoal was provided along 

 with the LiOH in the CO2 scrubbing 



446 



