1、Lessons Learned Entry: 0249Lesson Info:a71 Lesson Number: 0249a71 Lesson Date: 1993-01-27a71 Submitting Organization: KSCa71 Submitted by: Lisa L. MusgraveSubject: SKYLAB Pressure Vessel Rupture Description of Driving Event: The principal cause of pressure vessel rupture is overpressurization. This
2、overstressing of the tank could result in failures after experiencing normal temperature pressure cycles. Tanks that contain heater elements are most likely to experience high pressures if the electrical circuitry fails to cut off the heater elements. High-pressure tanks scratched or impacted after
3、proof testing, i.e., during installation, checkout, or crew operation, cause dangerous stress risers leading to potential tank failures.Lesson(s) Learned: Ruptured pressure vessels caused by overpressurization may produce projectiles and impact crew and/or rupture other pressure vessels.Recommendati
4、on(s): Provide fluid pressure displays, overpressure alarm systems and automatic relief valves (or other protection devices) for pressure systems.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted with
5、out license from IHS-,-,-Mission Directorate(s): a71 Exploration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Pressure VesselsAdditional Info: Approval Info: a71 Approval Date: 1994-06-15a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
