5.9 Emergency Shutdown Procedures

Operational safety in running the warp propulsion system (WPS) is strictly observed. Limits in power levels and running times at overloaded levels could be easily reached and exceeded. The system is protected by computer intervention, part of the overall homeostasis process. Starfleet human-factors experts designed the operational WPS software to make "overprotective" decisions in the matter of the health of the warp engine. Command overrides are possible at reduced action levels.

The intent was not to create human-computer conflicts; rather, command personnel are trained to use the software routines to their best effect for maximum starship endurance. Emergency shutdowns are commanded by the computer when pressure and thermal limits threaten the safety of the crew. The normal shutdown of the WPS involves valving off the plasma to the warp field coils, closing off the reactant injectors, and venting the remaining gases overboard. The impulse propulsion system (IPS) would continue providing ship power. In one shutdown scenario, the injectors would be closed off and the plasma vented simultaneously, the system achieving a cold condition within ten minutes. High external forces, either from celestial objects or combat damage, will cause the computer to perform risk assessments for "safe" overload periods before commanding a system throttleback or shutdown.