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NASA-LLIS-0623

Lessons Learned – Tethered Satellite System De-integration Process Lesson Learned

active, Most Current
Organization: NASA
Publication Date: 2 June 1999
Status: active
Page Count: 2
scope:

Description of Driving Event:

The Tethered Satellite System (TSS) Satellite Support Assembly (SAA) was inadvertently scheduled for delivery to the Florida Space Institute prior to de-integration of live ordnance. The scheduled delivery resulted from a request for donation of the SAA following utilization of TSS on STS-75. During offload operations of the SAA at Cape Canaveral Air Force Station (CCAS), a technician recognized six NASA Standard Initiators (NSI's) still installed on the hardware. The NSI's were all examined and determined to be "live" category B ordnance with Faraday caps installed. Explosive Ordnance Disposal (EOD) personnel then removed the six devices for proper disposition. The remainder of the satellite equipment was subsequently closely examined to verify there were no other hazards. No personnel were exposed to the live NSI's. The event was classified as a "Close Call" and entered into the Incident Reporting Information System (IRIS) database for review and implementation of corrective action(s). The cause of this incident was determined to be inadequate configuration control of flight hardware during the de-integration process. This resulted in a loss of accountability for hazardous items integral to the design. This is a situation particular to flight hardware not scheduled for re-flight. Hardware scheduled for re-flight (unlike TSS) possess adequate configuration control of hazardous items.

Document History

NASA-LLIS-0623
June 2, 1999
Lessons Learned – Tethered Satellite System De-integration Process Lesson Learned
Description of Driving Event: The Tethered Satellite System (TSS) Satellite Support Assembly (SAA) was inadvertently scheduled for delivery to the Florida Space Institute prior to de-integration of...
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