Payload Safety Review Plan and Issues Leland D. Hill

July 15, 2004Leland D. Hill2 Phase II Flight Safety Review Phase II (ФII) Safety Review Most critical safety review, where: Final design is reviewed by the Payload Safety Review Panel (PSRP) for compliance with Safety Requirements. Verification methods for assuring design safety compliance are agreed upon. ФIII Safety Review: Final safety review, is primarily for addressing completion of safety verification activities.

July 15, 2004Leland D. Hill3 Scheduling ФII Safety Review Current discussion is for a December 2004 ФII Safety Review. Meeting times very limited in December due to holidays 45 day submittal requirements will mandate completion of the ФII Safety Data Package (SDP) for Mid October Recommend planning on a January 2005 ФII Meeting Date with a Mid November Delivery Date to Payload Safety Review Panel.

July 15, 2004Leland D. Hill4 Status Of AMS-02 ФII SDP Initial Draft of ФII SDP was reviewed within LMSO in March, updates were indicated to comply with NSTS/ISS 13830, “Payload Safety Review and Data Submittal Requirements,” taking the ФI content to a ФII level. Responsibilities for updating text of the SDP assigned by LM Project Manager. LM Project Personnel have dedicated little time to SDP generation since early May due to the rebaselining effort

July 15, 2004Leland D. Hill5 Safety Analysis – Hazard Reports Original ФI/Draft ФII SDP contained 10 HRs

July 15, 2004Leland D. Hill6 Safety Analysis – Hazard Reports Revised updated safety analysis led to hazard report reorganization and additional hazard reports being prepared. Hazard reports were reassigned hazard identifiers (numbers) in this reorganization.

July 15, 2004Leland D. Hill7 Safety Analysis – Hazard Reports Revised ФII SDP contains 20 Hazard Reports

July 15, 2004Leland D. Hill8 SDP Status Hazard Reports All hazard reports to be reformatted for ФII Eleven (11) hazard reports have been drafted. Need additional coordination or supporting data. Eight (8) hazard reports have yet to be revised/drafted. Verifications will need to be coordinated across all applicable parties.

July 15, 2004Leland D. Hill9 SDP – Issues Current issues relate principally to documentation and coordination of information, not design deficiencies.

July 15, 2004Leland D. Hill10 SDP – Issues AMS-02 is a pathfinder in the safety process for attached exterior payloads on the ISS. There are accepted standards within the payload safety process, based on Shuttle interior and payload bay payloads and ISS rack based payloads, that may not be applicable for payloads mounted on the ISS truss.

July 15, 2004Leland D. Hill11 SDP – Issues Coronal Discharge AMS-02 utilizes high voltages and will generate its own rarified atmosphere during operations. Coronal Discharge unlikely to affect ISS, AMS-02 systems only, so hazard potential is very low. Need to establish high voltage protections are adequate for this environment, additional data will be requested from suppliers of high voltage sources.

July 15, 2004Leland D. Hill12 SDP – Issues Warm Helium Gas Supply System is still in flux, possible replacement with entirely different system Venting No descriptions available for non-propulsive vents and vent locations

July 15, 2004Leland D. Hill13 SDP – Issues Mate/Demate of Connectors AMS-02 does not have a means of inhibiting power usage or minimizing downstream power loads. Not clear that vehicles can provide needed two inhibits for EVA mate/demate of connectors. AMS-02 EVA Cables can be protected by remotely controlled UMA disconnect (1) and ISS power removal (2). Nominal robot connection have EVA backup mate/demate that must meet requirements. Have to rely entirely on vehicle power inhibits.

July 15, 2004Leland D. Hill14 SDP Supporting Documents Fracture Control Status. Significant data has been received, Status Summary needs to be written. Thermal Design. Design still not complete and documented. Delta CDR for Thermal Systems should resolve this issue Structural Verification Plan Needs additional revision based on updated information

July 15, 2004Leland D. Hill15 SDP Supporting Documents Battery Verification Plan Complete Material Usage Agreements Being Prepared, additional MUAs will be prepared as materials are identified.

July 15, 2004Leland D. Hill16 Outstanding Requests Pressurized Systems Pressure systems tables Cryomagnet

July 15, 2004Leland D. Hill17 Outstanding Requests Avionics High Voltage and Bonding/Grounding Data ECAL TOF TRD Tracker Tracker Thermal TRD Gas ACC Nominal power on pad before L-30 Grounding concepts for the TCS

July 15, 2004Leland D. Hill18 Outstanding Requests Thermal Pad Operations Thermal environment and purge requirements Thermal constraints to pad operations Update of temperature result table for nominal ISS operations (Partial information received) Launch to activation analysis (Data received, under review) Ramp up analysis Loss of Power analysis(Data received, under review) Transfer operations analysis(Data received, under review) Pictures/drawings/sketches of heater locations and information (Partial information received) MLI drawings/sketches/pictures for all applications