10/14/2015 June 2007 Parts Management.ppt Agency-Wide Part Management System Space Shuttle Lessons Learned on Lifecycle Management NASA Technical Standards Working Group Meeting June 11-12, 2007 Lee Zook Engineering Specialist United Space Alliance Engineering & Integration

10/14/2015 June 2007 Parts Management.ppt Page 1 USA Parts Management (Common Part) Experience Why Does NASA Need A Parts Management System? Success Example – Navy Contractor Moving Forward Agenda

10/14/2015 June 2007 Parts Management.ppt Page 2 USA was formed in 1996 to operate Space Shuttle Program (SSP) –Consolidation of approx 20 contractors supporting primarily 3 NASA Centers –Reduce costs through reduction of duplication Administration Logistics Inventory consolidation identified significant quantity (7,888) of duplicate (common) parts –SSP Specific – 800 –Industry Standard – 2748 (additional technical requirements applied to 134 items) –Commercial – 4340 USA Formed a Element-NASA/Contractor Working Group –Developing common specifications for items used across multiple elements –Stocking common parts/material as single items Result –Each Program Element had different Taxonomy for the same part! –Unable to make significant progress for SSP Specific and Industry Standard parts USA Common Parts Effort

10/14/2015 June 2007 Parts Management.ppt Page 3 The practice and science of classification Taxonomic classification is the act of placing an object or concept into a set or sets of categories (such as a taxonomy or a subject index), based on the properties of the object or concept. What would be the important criteria? Item Type –Fastener –Valve –Alloy sheet Physical properties –Strength –Density –Composition Specifications Taxonomy Design controls – – Testing – – Dimensions – – Configuration Management – – Critical process requirements Procurement requirements – – Inspection – – Documentation Others

10/14/2015 June 2007 Parts Management.ppt Page 4 NAS 1587 washers –Flat washer, stainless steel, passivated, ¼” ID, countersunk for use under bolt heads –Used by 5 Elements at point of hardware integration –USA tasked with supplying part 5 sets of requirements 5 different inventory unit part costs – ranged from $0.09 – 3.00/washer MS20995 Lock Wire –0.020” dia. Stainless steel alloy 302 or 302 wire, in 1 pound rolls –Used by 5 Elements at point of hardware integration –5 sets of requirements –Unit costs vary from $0.05/ft to $19/lb Minimum of 3500 remaining duplicate parts Part Examples

10/14/2015 June 2007 Parts Management.ppt Page 5 Constellation – Exploration Program Structure –Design/Product Lifecycle Management - 15 – 30 year program –Decentralized Project - 10 NASA Centers have responsibility for various projects/systems designs which will be integrated at KSC –Space Logistics – On orbit/Moon/Mars equipment maintenance – how much stuff do we have to bring to keep everything operational –Cost of duplication – Can NASA afford to pay all their contractors for duplicate efforts? Costs of Duplication –Defense Logistics Agency (DLA) 1997 study on the 5 year cost of adding a part to a design = $20,000 –SSP Example 3500 parts X $20,000 = $70,000,000 For a single set of duplicates Facility and ground support systems/hardware –Same arguments hold as for flight/CxP Why does NASA Need Parts Management?

10/14/2015 June 2007 Parts Management.ppt Page 6 Success Example – Navy Contractor Specification and Technical Part Management Specification Effectivity Management System –Contractual requirement –Controls all specifications to the revision letter –Uses database as engineering to identify acceptable revisions, applicable programs, and use restrictions –Incorporates assessment of changes between revisions to substantiate acceptance of new revisions –Tied into the part technical data in their Common Part Catalog Common Part Catalog –Cooperative product of 3 companies/shipyards –Established taxonomy for all parts used for Navy vessels within the participating companies/shipyard Part commonality/equivalency Part standardization Part data configuration management –Control part selection for new designs/programs

10/14/2015 June 2007 Parts Management.ppt Page 7 Control of Part Proliferation –Fastener selection for design Navy Contractor CPC contains over 5000 fasteners –Latest vessel design limited standard selection to 400 (no limit in the past) Significant long term cost avoidance Issues from Specifications –Tracking specification revision and monitoring changes necessary in long life programs –Efficient methods to incorporate technically interchangeable revisions is essential CPC Program Cost –Estimate approx $5 million over 8 years Success Example – Navy Contractor

10/14/2015 June 2007 Parts Management.ppt Page 8 NASA Common Parts Taxonomy System “Plus Up” proposed by Intergraph –Based upon prior work performed under DoD contract 3 year program –Establish Taxonomy –Design and build the structure for a NASA wide system –Initial data population –Establish processes to maintain system and control technical data ARES I Project opportunity –Offered support for the Plus Up Moving Forward

10/14/2015 June 2007 Parts Management.ppt Page 9 Establish Agency Part Management Use Plus Up and ARES Project –Establish Taxonomy for agency –Mandate use of parts management throughout ARES design efforts - exceptions approved through review board Control hardware items through selection lists to limit total part count across project –Expand to other programs/projects as system matures USA Strengths could support a Parts Management Initiative –Past experience with establishing common requirements –Operator of SSP heritage hardware designated for ARES/CxP –Established Specification Management Program for SSP responsible designs Moving Forward

10/14/2015 June 2007 Parts Management.ppt Page 10 USA Specification Management Program Findings related to SSP –Designs let specification revision “float” allowing for the use of the most current revision allows opportunity for all to misinterpret SDO actions – revisions, cancellations and suggested replacements –Issues identified when parts are procured – difficult to quickly change engineering –Duplication of effort to resolve as each occurrence identified –Violation of configuration baseline USA has developed tools for specification monitoring and tracking –Includes assessment of specification changes –Planning in work to make data available to SSP organizations –Process includes engineering design activities and problems associated with specifications identified during procurement Moving Forward