REG NASA-LLIS-2776-2010 Lessons Learned Kitting of Flight Hardware - Processing of Multiple Parts.pdf

1、 Public Lessons Learned Entry: 2776Lesson Info:a71 Lesson Number: 2776 a71 Lesson Date: 2010-04-28 a71 Submitting Organization: KSC a71 Submitted by: Annette Pitt Subject: Kitting of Flight Hardware - Processing of Multiple Parts Abstract: The Logistics organization treats parts as parts only, with

2、no provisions for storing related parts as kits. Because of the nature of the Thermal Control System (TCS) blankets and supports, storing parts individually caused multiple problems. The main problem was the difficulty of finding a particular TCS part in storage after removal from the vehicle (TCS b

3、ecomes a custom part when installed). Logistics agreed that TCS parts would be stored in boxes and sealed with integrity labels, with a box content sheet (generated from the TCS Blanket Management System TCSB) and a bar-coded label affixed to the outside of the box. This method enabled Logistics to

4、issue the correct parts to their respective vehicle and allowed the shops to retrieve the same set of TCS parts they had turned over to Logistics by ordering the box instead of individual parts. Description of Driving Event: On standard flows, TCS processes between 300 and 800 parts, and on nonstand

5、ard flows, over 1,000 parts. The management (including storage and tracking) of all those parts is crucial to the buildup of the vehicle as work constraints are removed. During each processing flow (whether normal or Orbiter Maintenance Down Periods OMDP), the TCS must be removed to allow access to

6、other systems. Initially, the system was removed and components and parts were turned over to Logistics for storage. High volume of removed TCS components (both blankets and supports) and the logistics tracking system in use at that time (the Logistics Open Requirements Management Tracking System LO

7、RMS and the Kennedy Inventory Management Systems KIMS; now People Soft) resulted in the following: a71 Many parts were issued to the wrong vehicle. a71 Issued parts did not fit with adjacent parts, resulting in the need to generate problem reports. a71 Parts removed for a given area were stored in m

8、ultiple boxes with other unrelated parts. a71 Multiple trips to Logistics were required in search of correct parts. Lesson(s) Learned: Removal of high volumes of parts requires proper planning to enable smarter storage and retrieval of parts. Random storage results in delays, lost parts, mismatched

9、parts, and overall frustration for all parties involved. Related parts should be stored in the same container (kitted together). Each container should be integrity-sealed, with an inventory sheet attached to the outside and a bar code affixed for tracking purposes. The storage location should be rec

10、orded in a tracking system. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Figure 1: Engineering Screen Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Figure 2: Blanket Inquiry Screen Provided by IH

11、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Figure 3: Carrier Panel Kitting Screen Kitting was developed to process parts with many detailed sub-assemblies while maintaining the assembly kitted together for later issuance and re-installation. It guaranteed tha

12、t what was removed as an assembly and processed as an assembly, would remain as an assembly through the routing and storage phases until it was recalled for re-installation Recommendation(s): Adjacent parts or parts removed from a particular area should be processed together and stored in the same c

13、ontainer. Proper storage techniques and tracking methods for parts should be planned as vehicle processing operations (whether normal or OMDP work) are planned. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurrence Control Effectiven

14、ess: When the recommendations were implemented, the Configuration Discrepancy Report count became zero for TCS on misread or incorrectly documented part/serial/order control numbers. The count for misplaced parts became almost zero. Paperwork became clearer and showed fewer errors. Documents Related

15、 to Lesson: N/A Mission Directorate(s): a71 Space Operations a71 Exploration Systems Additional Key Phrase(s): a71 0.Packaging, Handling, Storage a71 0.Occupational Health a71 0.NASA Standards a71 0.Mishap Reporting a71 0.Logistics a71 0.Parts, Materials, & Processes a71 0.Test Facility a71 0.Traini

16、ng Equipment a71 0.Transportation a71 0.Program and Project Management a71 1.Configuration control and data management a71 1.Ground processing and manifesting a71 0.Procurement, Small Business & Industrial Relations a71 0.Pressure Vessels a71 0.Policy & Planning a71 0.Personal Protective Equipment a

17、71 0.Payloads a71 0.Ground Operations a71 0.Test & Verification a71 0.Standard a71 0.Spacecraft a71 0.Software a71 0.Security a71 0.Safety & Mission Assurance a71 0.Risk Management/Assessment a71 0.Research & Development a71 0.Range Operations a71 0.Test Article a71 0.Configuration Management Additional Info: a71 Project: Space Shuttle Program (SSP), Flight hardware processing of multiple parts. Approval Info: a71 Approval Date: 2010-11-17 a71 Approval Name: mbell a71 Approval Organization: HQ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-