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NASA Preferred Technical Standards
The NASA JSC Payload Safety Home Page (Payload Safety Review Panel).
Interpretations of NSTS Payload Safety Requirements NSTS 18798A
Or check these Goddard Copies:
Safety Policies and Requirements NSTS1700.7B (Shuttle) and Addendum (ISS)
Implementation Procedures For NSTS Payload System Safety Requirements NSTS 13830B
GUIDELINES FOR THE PREPARATION OF PAYLOAD FLIGHT SAFETY DATA PACKAGES AND HAZARD REPORTS NSTS 26943
Revision C Payload Verification NSTS 14046
Other information contained : Hazard Definitions, Generic Hazard Reports (taken directly from NSTS 26943), Hazard Analysis Techniques, Hazard groupings, subsystem hazards. All information which appears in this system is taken from NASA Safety related documents.
Critical Hazard damage to equipment, non-disabling injury, requires unscheduled safing of orbiter, affects operations
no single failure should result in a critical hazard ==> 2 controls (i.e., redundant) to prevent critical hazard
Catastrophic Hazard: disabling / fatal personal injury, loss or orbiter
no combination of two failures should result in a catastrophic hazard ==> 3 controls (i.e., dual redundant) to
prevent critical hazard
Failure Tolerance: basic safety requirement; tolerate minimum number of CREDIBLE failures
single tolerant = 2 independent controls
Design for Minimum Risk: adequate factors of safety: structures, pressure vessels, pressure lines, fittings, pyrotechnics, mechanisms,
materials compatibility, flammability
Special Consideration:
Pressure Systems Sealed Container, Pressure Vessel, Energy Content, MDP / MOP
Radiation: Ionizing radiation, electromagnetic radiation (emission, susceptibility)
Hazardous Materials: No release, containment, materials compatibility
Chemical Release
Flammable Materials
Batteries JSC 20793 - Manned Space Vehicle Battery Safety Handbook, 9/85
Hazard Report critical / catastrophic hazard
JSC Form 1230 - Flight Payload Standardized Hazard Control Report, 11/98
Mechanical Hazard sharp edges, protrusion
Thermal Hazard high / low temperatures, touch / exhaust / dew temperature (>4C --- < 45C)
Electric Hazard electric shock
Fire Protection
Safety Review Process (NSTS13830)
(Payload Safety Review and Data Submittal Requirements For Payloads Using the Space Shuttle And International Space Station, July 1998)Phase 0 Phase 0 is held during the concept phase or at the start of payload design
Payload description, identify potential hazards
Phase I Phase I is near the Preliminary Design Review (PDR)
Hazards Identified, identify potential hazard controls
Phase II Phase II is near the Critical Design Review (CDR)
Hazard Controls Finalized, start verifications
Phase III Phase III is associated with completion of payload safety verifications
Ideally: safety verifications complete
Phase III delta minor modifications to existing hardware
Reflight Assessment assess validity of existing verifications for un-changed payload
Transition of NSTS Payloads to ISS: longer exposure / life time, modified rules / limits
Verification Tracking Log track open verifications between Phase III and Flight
The flight and ground phase III completion requirements restated below are in the current version of NSTS 1700.7 (flight; Ground KHB1700.7) and NSTS 1700.7 ISS Addendum (flight) and apply to all payloads.
The JSC and KSC Phase III safety review and ground safety certification must be completed 30 days prior to delivery of the payload, ASE, and GSE to the launch site