1、Lessons Learned Entry: 1143Lesson Info:a71 Lesson Number: 1143a71 Lesson Date: 2000-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: International Space Station (ISS) Program/Solid Fuel Oxygen Generator (SFOG) Utilization Description of Driving Event: Utilization of Rus
2、sian-Built SFOG May Pose a Safety Hazard Aboard International Space Station (ISS) Given Past Problems With the Solid Fuel Oxygen Generator (SFOG)Lesson(s) Learned: The Russian Solid Fuel Oxygen Generator (SFOG) is baselined as the backup oxygen supply system for the ISS. This device has experienced
3、problems in its application on Mir and thus may be a potential safety hazard when operated on the ISS.Recommendation(s): Examine ways to eliminate the risks posed by the use of the Russian SFOG such as by determining the availability of a better, “off-the-shelf,“ safety-proven SFOG or by initiating
4、an R&D effort to produce a safer alternative.Evidence of Recurrence Control Effectiveness: NASA concurs with the ASAP recommendation. A joint NASA-Russian Space Agency (RSA) team has completed an investigation of the SFOG experience on Mir. The failure mode has been identified and has been reproduce
5、d and verified during ground tests. The position of the NASA-RSA team is that the Mir experience was an isolated incident. Units planned for use on the ISS have been subjected to lot testing and screening of manufacturing and quality records and test reports. A non-flammable containment system to pr
6、event propagation of a fire has been developed and tested as an additional safety enhancement. The conclusion of a joint NASA-RSA engineering, safety and mission assurance, and program management team is that this system is safe for operation on the ISS.Provided by IHSNot for ResaleNo reproduction o
7、r networking permitted without license from IHS-,-,-A parallel effort to develop a commercial off-the-shelf oxygen generation system was initiated by NASA during the SFOG failure investigation. This system has been certified for use, if necessary.Documents Related to Lesson: N/AMission Directorate(s
8、): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Hazardous/Toxic Waste/Materialsa71 Medicala71 Policy & Planninga71 Research & Developmenta71 Safety & Mission Assurancea71 Spacecrafta71 Test & VerificationAdditional Info: Approval Info: a71 Approval Date: 2002-02-25a71 Approval Name: Bill Loewya71 Approval Organization: HQa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
