REG NASA-LLIS-3763-2011 Lessons Learned - Certifying Calibration on Test Components.pdf

1、Public Lessons Learned Entry: 3763 Lesson Info: Lesson Number: 3763 Lesson Date: 2010-07-13 Submitting Organization: KSC Submitted by: Annette Pitt Subject: Certifying Calibration on Test Components Abstract: Ground Support Equipment (GSE) systems should be thoroughly reviewed to determine the requi

2、rements for periodic calibration of the individual components. It is not enough to validate the system as a whole. Description of Driving Event: In the Command and Data Simulator (CADS) room of the Space Shuttle Main Engine (SSME) Shop, two power supplies provided power for the SSME. When one of the

3、 power supplies malfunctioned, it was discovered that two power monitors were not calibrated. The power supply had been validated every year but the individual power monitoring components had not been calibrated. There were no procedures to send these items for calibration. Lesson(s) Learned: Even t

4、hough a system with several components can be validated as a whole, the calibrations of the individual components may not be up to date. It is important for the system validation to document that the individual component calibrations are up to date. Also, a mechanism should be in place to ensure tha

5、t the components are scheduled and sent for calibrations as required. This oversight was corrected for the CADS power supply. Recommendation(s): For new or inherited GSE systems: Conduct a component-level review and identify components that require periodic calibration. Evidence of Recurrence Contro

6、l Effectiveness: N/A Documents Related to Lesson: N/A Mission Directorate(s): Space Operations Additional Key Phrase(s): Ground processing and manifesting Maintenance Engineering design and project processes and standards Ground Equipment Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Additional Info: Project: Space Shuttle Program Approval Info: Approval Date: 2011-07-22 Approval Name: mbell Approval Organization: HQ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-