2.25.3 Striking Procedures Under NBC Conditions.
Procedures for striking and shutting down CBPS under non-NBC conditions and under NBC
conditions are essentially the same, except for removing ambulatory airlock and TALP
airlock doors. The following steps and procedures are for striking and shutting down under
CBPS Striking Procedures.
During NBC mode of operation, ensure EPG switch, NBC FAN switch and ESS remain ON.
When striking during NBC mode of operation, ECV engine must be running. ESS MODE
selector switch must be on VENT for ESS to function. Continuous LMS over pressure must
be maintained when ABS is rolled up and stowed.
To prevent death or injury to LMS crew from contamination, LMS crew must be in full
Refer to Appendix E, Load Plan, for stowing equipment in the LMS and on the HMT.
a. LMS Crew Tasks
Put on chemically protective clothing and masks.
Turn off and remove lights. Pick up medical chests and other items to be stowed on HMT and
place in airlocks. Signal to cab crew to remove equipment from airlocks.
Remove recirculation fans and stow in LMS.
Allow airlocks to purge for approximately three minutes.
To prevent death or injury to LMS crew from contamination, ensure that cab crew has
removed outer TALP airlock door, stowed TALP airlock fabric tunnel, and unrolled and
secured TALP airlock door cover.
To help purge TALP airlock, signal to cab crew to open TALP door flap a little by separating
fastener hook and fastener loop fastener. Once TALP airlock is purged, ensure TALP opening
is sealed securely.
Allow TALP airlock to purge for approximately three minutes. Use CAM to check if airlock has
Loosen two knobs (1, figure 2-51), carefully remove rails (2) and stow in LMS. Signal cab crew
when rails are removed and inner TALP door is shut.
Await notification from cab crew that outer TALP door has been removed and TALP opening is
folded and sealed securely.
Remove inner door (3) by disengaging latch clamp (4) and removing retaining clamp (5). Stow
inner door (3) and retaining clamp (5) in LMS.