AMS-02 Ground Safety (Permanent Magnet) AMS-02 Design TIM May 5, 2010

Page 2 Current Status Conducted a Phase III Ground Safety Review in February All hazard reports, except one, were approved with modifications. Pressure systems (GHR- AMS02-004) remains unapproved. Package/Hazard Reports still needed information. Verifications were 33% complete as of the phase III review.

Page 3 Changes to Ground Safety Package Flight Hardware section – Delete all cryogenic hardware – Delete magnet description Ground Support Equipment section-No CGSE Operations Overview-Take out cryogenic ops description Safety Discussion-Simplified due to no cryogenics

Page 4 Ground Hazard Reports GHR-AMS (Fire) – Still a valid hazard report. – Two causes most likely deleted/altered due to removal of on-board/GSE pumps. Mechanical failure of rotating equipment (deleted) Static buildup from rotating equipment/GSE powered equipment (altered) GHR-AMS (Toxicity) – Still a valid hazard report. – No modifications necessary.

Page 5 Ground Hazard Reports GHR-AMS (Liquefaction of Atmospheric Gases) – Hazard report will be deleted. – No cryogenics and therefore no cause of liquefaction.

Page 6 Ground Hazard Reports GHR-AMS (Rupture of Pressurized Components) – Still a valid hazard report. – There will be significant modifications due to absence of cryogenic GSE/flight hardware. – There are 11 causes in the hazard report. Five causes will be deleted due to no cryogenics. Six causes stay, but will be modified.

Page 7 Ground Hazard Reports GHR-AMS (Exposure to High Pressure Gas Plume) – Hazard report will be deleted. – It was written for the flight/GSE cryogenics systems. GHR-AMS (Excessively Low Touch Temperatures) – Hazard report will be deleted. – With no cryogenic systems, there are no foreseen low touch temperature hazards.

Page 8 Ground Hazard Reports GHR-AMS (Asphyxiation) – Still a valid hazard report, though with modifications. – Report will be simplified to only cover CO 2, Xenon. GHR-AMS (Ionizing Radiation) was deleted prior to phase II GHR-AMS (Structures, Lifting) – Still a valid hazard report. – May have to modify GHE matrices.

Page 9 Ground Hazard Reports GHR-AMS (Structures, Stands) – Still a valid hazard report. – Need to modify and complete GHE matrices. GHR-AMS (Electric Shock) – Still a valid hazard report. – There are seven causes. Six will remain with no modifications. One will be deleted because it dealt with water leakage in large CGSE pumps.

Page 10 Ground Hazard Reports GHR-AMS (Acoustics) – Hazard report will be deleted. – Main concerns were CGSE pumps and main cryosystem burst disk. – Both sources of acoustic hazards are gone due to design change. GHR-AMS (Magnetic Fields) – Still a valid hazard report. – There are 3 causes in the hazard report. One cause will change (production of excessive magnetic fields). Two other causes will remain the same.

Page 11 Ground Hazard Reports GHR-AMS (Sharp Edges) – Still a valid hazard report. – No modifications needed. GHR-AMS (Excessively Hot Touch Temperatures) – Still a valid hazard report. – There are four causes in this hazard report. Two causes will be deleted. –Pumps/motors overheating –Dump diodes Two causes will remain

Page 12 Ground Hazard Reports GHR-AMS (Lasers) – Still a valid hazard report. – No modifications needed currently, but will be monitored as laser design matures. GHR-AMS (Tools) – Still a valid hazard report. – No modifications needed.

Page 13 Hazard Report Statistics Current phase III package: – Number of ground hazard reports: 16 – Number of verifications: 212 – Percent complete: 33% Phase III package (permanent magnet) – Foreseen number of ground hazard reports with permanent magnet: 12 – Number of verifications: 131 – Percent complete: 23%