Air Beam Shelter (ABS) Setup Procedures Under NBC Conditions.
To prevent death or injury to personnel from contamination, do not open inner and outer
TALP airlock doors and/or ambulatory airlock doors at the same time. Do not open DCS
doors unless direct complexed and DCS connector is in place.
Cab crew and LMS crew must coordinate activities to prevent contamination of CBPS
To prevent injury to ears, hearing protection is required.
Do not hit LMS or ABS windows. Windows may crack or break.
To reach over pressure in ABS as quickly as possible and to prevent contamination,
communications between LMS crew and cab crew are essential. A method of communication
should be established as early as possible (possibly prior to mission). This can take the form
of voice communications, hand signals, field phones if available, or a combination of any of
At times voice communications will be difficult due to high noise level.
a. LMS Crew Tasks
Wait for cab crew signal before engaging NBC fan. Damage to retention strap will occur.
Under NBC conditions, inflated ABS should always be pressurized to at least 0.5 iwg.
Adjustment of pressure inside CBPS, TALP and ambulatory airlock is accomplished by
opening flaps on inner and outer ambulatory and TALP airlock doors. Airlock should be
pressurized to 0.3 iwg.
Press NBC fan switch (1, figure 2-37) to ON. When NBC SHELTER PRESSURE gage (2)
reaches 0.2 iwg pressure, start rib fan by pressing RIB FAN ON switch (4) on rear control panel
(3). RIB FAN ON switch (4) lights (red) when RIB INFLATION PRESSURE LOW indicator (5)
lights (red). RIB INFLATION PRESSURE LOW indicator (5) will remain on until air beam
pressure reaches low setting on RIB PRESSURE gage (6), at which time RIB INFLATION
PRESSURE LOW indicator (5) will change from red to white.
Do not lower ladder into ABS until ladder legs can clear ceiling and air beams.
As ABS inflates, lower ladder (1, figure 2-38) into ABS. Enter ABS (2) and help raise ABS (2) by
supporting air beams (3).