SSP 51721 Baseline ISS Safety Requirements Document International Space Station Program Baseline September 2019 This publication does not contain information which falls under the purview of the U.S. Munitions List (USML), as defined in the International Traffic in Arms Regulations (ITAR), 22 CFR 120-130, and is not export controlled via the ITAR. This publication also does not contain information within the purview of the Export Administration Regulation (EAR), 15 CFR 730-744, and is not export controlled via the EAR. Additional release to the general public requires approval through the appropriate NASA release process. Document Title National Aeronautics and Space Administration InternationalVolume Space (Arabic) Station Program YouJohnson willSpace Centerbe able to use 3 lines Houston, Texas Contract No.: NNJ12GA46C SSP 51721 Baseline REVISION AND HISTORY REV. DESCRIPTION PUB. DATE - Initial Release (Reference per SSCD 015733, EFF. 10-18-19) Early Release 10-21-19 Program Release XX-XX-XX SSP 51721 Baseline PREFACE ISS SAFETY REQUIREMENTS DOCUMENT The contents of this document are intended to be consistent with the tasks and products to be prepared by the International Space Station Program participants. SSP 51721 shall be implemented on all new International Space Station (ISS) contractual and internal activities and shall be included in any existing contracts through contract changes. This document is under the control of the Space Station Control Board (SSCB). The SSCB delegates control and approval authority for future updates and/or revisions to the Multilateral Safety and Mission Assurance Control Board (MSMACB). See Directive Approval Kirk Shireman Date National Aeronautics and Space Administration International Space Station Program Program Manager i SSP 51721 Baseline ISS SAFETY REQUIREMENTS DOCUMENT CONCURRENCE SEPTEMBER 2019 ii SSP 51721 Baseline ISS SAFETY REQUIREMENTS DOCUMENT APPROVAL SEPTEMBER 2019 Approved by: ESA ESA REPRESENTATIVE ORG SIGNATURE DATE JAXA Approved by: JAXA REPRESENTATIVE ORG SIGNATURE DATE ASI Approved by: ASI REPRESENTATIVE ORG SIGNATURE DATE RSCE Approved by: ORG RSCE REPRESENTATIVE SIGNATURE DATE iii SSP 51721 Baseline PAGE INTENTIONALLY BLANK iv SSP 51721 Baseline TABLE OF CONTENTS PARAGRAPH PAGE 1.0 INTRODUCTION ................................................................................................................... 1-1 1.1 PURPOSE ............................................................................................................................. 1-1 1.2 SCOPE .................................................................................................................................. 1-1 1.3 PRECEDENCE ...................................................................................................................... 1-2 1.4 VERB APPLICATION ............................................................................................................ 1-2 2.0 DOCUMENTS ....................................................................................................................... 2-1 2.1 APPLICABLE DOCUMENTS................................................................................................. 2-1 2.2 REFERENCE DOCUMENTS ................................................................................................ 2-4 3.0 GENERAL ............................................................................................................................. 3-1 3.1 RESPONSIBILITY ................................................................................................................. 3-1 ISS PROGRAM ..................................................................................................................... 3-1 INTERNATIONAL SPACE STATION SAFETY REVIEW PANEL (ISRP) .............................. 3-1 END ITEM PROVIDER .......................................................................................................... 3-1 INTERNATIONAL PARTNER ................................................................................................ 3-1 3.2 SAFETY ANALYSIS .............................................................................................................. 3-1 3.3 HAZARD CONTROL SCHEME ............................................................................................. 3-2 DESIGN TO TOLERATE FAILURES (FAILURE TOLERANCE) ........................................... 3-2 DESIGN FOR MINIMUM RISK .............................................................................................. 3-2 3.4 HAZARD REDUCTION PRECEDENCE SEQUENCE ........................................................... 3-3 DESIGN ................................................................................................................................. 3-3 SAFETY DEVICES ................................................................................................................ 3-3 WARNING DEVICES ............................................................................................................ 3-3 OPERATIONAL CONTROLS ................................................................................................ 3-3 3.5 GROUND SUPPORT EQUIPMENT AND GROUND PROCESSING HAZARDS .................. 3-4 KENNEDY SPACE CENTER LAUNCH FACILITY ................................................................ 3-4 NORTHROP GRUMMAN LAUNCH FACILITY ...................................................................... 3-4 SPACE LAUNCH FACILITY .................................................................................................. 3-4 SOYUZ/PROGRESS LAUNCH FACILITY ............................................................................ 3-4 HTV LAUNCH FACILITY ....................................................................................................... 3-4 3.6 VISITING VEHICLES ............................................................................................................ 3-5 3.7 RUSSIAN SEGMENT OPERATIONS ................................................................................... 3-6 3.8 MAINTENANCE/ACCESS ..................................................................................................... 3-6 3.9 DEPLOYABLE/FREE FLYING END ITEMS .......................................................................... 3-6 3.10 REFLIGHT, SERIES, AND MODIFIED END ITEMS ............................................................. 3-7 3.11 CREW HABITABLE MODULES ............................................................................................ 3-7 3.12 VERIFICATION ..................................................................................................................... 3-8 VERIFICATION METHODS................................................................................................... 3-8 3.13 LIMITED LIFE ITEM VERIFICATION .................................................................................... 3-9 3.14 SAFETY NON-COMPLIANCE REPORTS ............................................................................ 3-9 3.15 SAFETY CRITICAL ............................................................................................................... 3-9 3.16 FAIL SAFE............................................................................................................................. 3-10 v SSP 51721 Baseline 4.0 SAFETY REQUIREMENTS ................................................................................................... 4-1 4.1 CORE REQUIREMENTS ...................................................................................................... 4-1 GENERAL HAZARD SEVERITIES, CONTROLS, & VERIFICATION REQUIREMENTS ...... 4-1 MARGINAL HAZARD CONTROLS ....................................................................................... 4-1 VERIFICATION – MARGINAL HAZARD CONTROLS .......................................................... 4-1 CRITICAL HAZARD CONTROLS .......................................................................................... 4-1 VERIFICATION – CRITICAL HAZARD CONTROLS ............................................................. 4-2 CATASTROPHIC HAZARD CONTROLS .............................................................................. 4-2 VERIFICATION – CATASTROPHIC HAZARD CONTROLS ................................................. 4-2 ENVIRONMENTAL COMPATIBILITY ................................................................................... 4-3 VERIFICATION – ENVIRONMENTAL COMPATIBILITY ...................................................... 4-3 SAFE WITHOUT SERVICES ................................................................................................ 4-3 VERIFICATION - SAFE WITHOUT SERVICES .................................................................... 4-4 CRITICAL SERVICES ........................................................................................................... 4-4 VERIFICATION – CRITICAL SERVICES .............................................................................. 4-4 4.2 STRUCTURES ...................................................................................................................... 4-4 SAFETY CRITICAL STRUCTURES AND FRACTURE CONTROL ...................................... 4-4 PAYLOAD STRUCTURES AND FRACTURE CONTROL ..................................................... 4-5 VERIFICATION – PAYLOAD STRUCTURES AND FRACTURE CONTROL ........................ 4-5 NON-PAYLOAD STRUCTURES ..........................................................................................