REG NASA-LLIS-0032-1992 Lessons Learned - Displaced Heating Ventilating Air Conditioning (HVAC) Controls.pdf

1、Lessons Learned Entry: 0032Lesson Info:a71 Lesson Number: 0032a71 Lesson Date: 1992-09-17a71 Submitting Organization: KSCa71 Submitted by: Lisa L.MusgraveSubject: Displaced Heating, Ventilating, Air Conditioning (HVAC) Controls Description of Driving Event: The HVAC chilled water boost pumps are loc

2、ated on the 120-foot level of the rotating service structure (RSS). The start/stop controls and circuit breakers (disconnects) providing power to the pumps are located in the motor control center at the RSS 215-foot level; therefore, there is no local control. When maintenance personnel are working

3、on the pumps, a possibility exists that someone could re-apply power. The start/stop controls and circuit breakers can not be locked out, physically, to prevent inadvertant actuation.Lesson(s) Learned: With displaced power controls, an inadvertant actuation of the HVAC system may result in maintenan

4、ce personnel injury/fatality.Recommendation(s): Provide a local means of controlling the start/stop controls and circuit breakers which provide power to the HVAC pumps and systems.Evidence of Recurrence Control Effectiveness: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted wi

5、thout license from IHS-,-,-Documents Related to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Energya71 Facilitiesa71 Ground Operationsa71 Ground Equipmenta71 Hardwarea71 Human Factorsa71 Industrial Operationsa71 Launch Processa71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 1994-06-01a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-