OPERATIONAL AND EMERGENCY BILLS 163 



1. All items of equipment, both professional and personal, shall be reviewed and approved 

 for stowage and use aboard Sealab n. 



2. A careful log of all items intended for use within Sealab n shall be maintained by the 

 Atmosphere Control Officer. 



3. Only the Senior Medical Monitor or the Atmosphere Control Officer may grant approval 

 of items, and all items shall be logged. 



4. The log of items shall also list an approximate weight and storage location within the 

 structure. This is necessary for accurate analysis of ballasting required for both towing and 

 placement on the bottom at the chosen site. 



Captain Walter F. Mazzone, MSC, USN will maintain supervision of this program; there- 

 fore all approvals granted by the Senior Medical Monitor, Captain George F. Bond, MC, USN, 

 will by necessity have to be transmitted for logging the required data. 



Specific Conditions 



Sealab n is emplaced on the sea floor. The atmosphere can suffer contamination in many 

 ways. One source is from electrical fires, which may generate smoke, ozone, and other ob- 

 jectionable gases and odors. A second source could be spilled chemicals. 



Procedures 



In the event of atmospheric contamination, all subjects designated by the bottom commander 

 will don the emergency air-breathing masks. All other subjects will proceed to the Personnel 

 Transfer Capsule to await further instructions. 



Depending on the type of contamination, immediate measures will be taken to remove the 

 source of contaminant. If the source is electrical, secure the main power. If the source is 

 chemical, cover the source or wash down any spillage with a hose. 



Sealab' s atmosphere can be purged with fresh helium and oxygen from the spare bottles 

 carried aboard. The racks carry ten bottles of helium, eleven bottles of oxygen and three 

 bottles of premixed helium-oxygen gas. Fresh helium is introduced into the vent plenum. 

 Fresh oxygen is introduced into the fan discharge duct. The fan should always be running when 

 oxygen is introduced, to effect proper dilution of the gas, and to avoid a fire hazard. 



If all efforts to clear the atmosphere should fail, all subjects will proceed to the Personnel 

 Transfer Capsule to be brought to the surface for transfer to the Deck Decompression Cham- 

 ber, either to be decompressed or held at pressure pending an evaluation of the situation. The 

 decision to decompress will be given by the Senior Medical Monitor and the Project Director. 



SEALAB H; ELECTRICAL POWER LOSS BILL 



In case of total power failure, take the following steps. 



1. Move all switches on main power panel to OFF. 



2. Notify support vessel to restore power. 



3. When either indicator lamp on panel glows, move corresponding power-supply switch 

 to ON. (Mechanical interlock will prevent both NORMAL and ALTERNATE power supply 

 switches from being on at same time). 



4. Move remaining switches, one at a time, to ON. (These are the load switches. No. 

 1-4P-A to 1-4P-F). 



