REG NASA-LLIS-4936-2012 Logistics Sparing Methodology.pdf

1、Public Lessons Learned Entry: 4936 Lesson Info: Lesson Number: 4936 Submitting Organization: KSC Submitted by: Jenni Palmer Subject: Logistics Sparing Methodology Abstract: Lack of a consistent, comprehensive, analysis-based sparing methodology wastes resources, increases costs, impacts schedule and

2、 results in unnecessary procurements. Description of Driving Event: The sparing methodology for the Constellation Ground Operations Project (GOP) did not have a complete provisioning plan or other potential cost savings features that a more comprehensive analysis-based process would provide. This wa

3、sted resources, increased costs, impacted schedule, and resulted in unnecessary procurements. At times, spares were ordered that were unnecessary because the expected operational life of the equipment exceeded the period for which provisioning was done. At other times, designs were changed last minu

4、te which resulted in the wrong spares being ordered, based on outdated data. A proper provisioning plan would ensure closed loop tracking encompassing all design changes. Conversely, development spares are typically identified when Logistics Support Analyses (LSAs) are performed at the subsystem lev

5、el. Sometimes, procurements were made for a subsystem before an LSA was performed. These parts, procured too early in the design, became unnecessary and available resources were underutilized and wasteful. Lesson(s) Learned: Projects need to define a robust sparing methodology early in the developme

6、nt process. Recommendation(s): Define a robust sparing methodology before project contract actions are taken and ensure that the logistics budget is adequate to cover identification, procurement, storage, transportation, management, and disposition for initial and replenishment spares, for developme

7、nt and operations. Ensure that procurements are not initiated until designs are sufficiently mature. Evidence of Recurrence Control Effectiveness: N/A Documents Related to Lesson: N/A Mission Directorate(s): Exploration Systems Additional Key Phrase(s): Program Management. Program Management.Acquisi

8、tion / procurement strategy and planning Additional Info: Project: Constellation Approval Info: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval Date: 2012-10-01 Approval Name: mbell Approval Organization: HQ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-