1. 1 Re-entry Risk Management for unmanned spacecraft and launch vehicle orbital stages ISO/TC20/SC14 (WD27875) 17, October 2007 ISO/TC20/SC14/WG3 Akira Kato, Japan

2. History since last meeting 2007.06.08: Comments from DE, FR and USA 2007.07.26: Comments from RU 2007.08.10: PL send reply to USA. 2007.08.13: PL send reply to RU. 2007.08.13: Distribute reply to all comments and new ver.K. 2007.08.17: Disribute above to ODCWG. 2007.09.18: Comments from USA 2007.09.19: PL send reply to USA 2007.09.29: Coviner registered version (df) in KAVI. 2007.10.02: Secretary send PL version (E)=(df) as editorial correction 2007.10.04: PL send secretary request to change “editorial check version” with new version L (reflecting second coments from US, and editorial correction by JPN side. 2007.10.10: Covenor deleat version (df) from KAVI. 2007.10.11: Dr. Hedly Stokes distributr coments and ver.L to ODCWG. 2007.10.12: PL send outline (this paper), comparison between J&K, K&L.

3. 3 Purpose of the Standard Casualties on the ground Launching Country Commercial Company (manufacturers, operators, and customers) Risk Management to Prevent Causalities ISO Standards System Safety Risk Management Assessment of Risk Risk Reduction Management Plan Safety If not, by Voluntary Activities

4. 4 Safety Program Re-entry risk management Organization to perform safety functions Safety programme plan Review System Safety activities

5. 5 Assessment flow Estimation of Risk Assessment of risk caused by re-entering debris Casualty limit Approved Analysis tool and data for survivability determination Imposed by Government or self-restriction Probabity of Risk Realization Risk Senarion and Consequence of Effects

6. 6 Complete Demise < threshold > threshold Effect on the Earth Environment : Threshold Controlled Re-entry Survive START: Survivability Analysis Risk on Human : Threshold completely demised or survived? Design Change Is the risk reduction possible by design change? possible Impossible Disposal by Natural Decay or Reduction of Orbital Lifetime (uncontrolled re-entry) Risk Assessment Flow and Disposal Planning

7. 7 Risk reduction measures Controlled re-entry Structural design to reduce survivability Notification Option for Risk Reduction

8. Compliance matrix between the main contents of this STD and that of Annex A Clause and subclause of standard Clause and subclause of RRAMP 1 ScopeA.1 Scope 2 Normative referencesA.2 Related documents 3 Terms, definitions, abbreviations, and symbols 4 Re-entry risk management 4.1 Re-entry Safety Program 4.2 Re-entry Safety Oversight and Management 4.3 Re-entry risk assessment and mitigation plan A.3 Re-entry risk management A.3.1 Rre-entry Safety Program A.3.2 Re-entry Safety Oversight and Management A.3.3 Re-entry risk assessment and mitigation plan 5 Risk Assessment 5.1 General A.4 Risk Assessment A.4.1 General A.4.1.1 Concept of assessment A.4.1.2 Mission description 5.2 Safety requirementsA.4.2 Safety requirements 5.3 Process and resources for analysisA.4.3 Process and resources for analysis 5.4 Estimation of RiskA.4.4 Estimation of Risk 5.5 Risk decision and actionsA.4.5 Risk decision and actions 6 Risk reduction measures 6.1 General A.5 Risk reduction measures 6.2 Controlled re-entryA.5.1 Controled re-entry 6.3 Structural design measures to reduce re-entry survivability A.5.2 Structural design measures to reduce re-entry survivability 6.4 NotificationA.5.3 Notification