1、Lessons Learned Entry: 0931Lesson Info:a71 Lesson Number: 0931a71 Lesson Date: 2000-11-15a71 Submitting Organization: JSCa71 Submitted by: Jonathan ManningSubject: Faulty Chair Mechanism Description of Driving Event: JSC employees fell out of their office chairs when they broke. One employee was inj
2、ured; the other was not. These two events were several months apart.The model that broke is an adjustable, high-back, gray chair made by Dauphin North America, product code # SL1939 1995 model.The investigation found fractures in the mechanism that attaches the backrest to the base. The manufacture
3、confirms that the metal in the mechanism is not strong enough to withstand repeated stress and strain. Both failures occurred when the chair was unlocked in the full recline position.The chairs are under warranty. Dauphin North America is manufacturing new mechanisms to replace the ones on the 1995
4、models. The 1996 models and succeeding have the stronger mechanism.Lesson(s) Learned: Actively working with manufacturers and/or suppliers to find fault or defects in products will greatly improve safe usage. Purchasing chairs and other equipment with extended warranties provides much needed leverag
5、e when correcting defects through the manufacturer. This keeps the warranty intact and ensures equipment that continues to be in good and safe working order and improved.Recommendation(s): If you have one of these chairs, do not sit in a full recline position. Identify such chairs to your furniture
6、managers to ensure that your chair is still in good working order and fixed if necessary.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): a71 Expl
7、oration Systemsa71 Sciencea71 Space Operationsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Environmenta71 Facilitiesa71 Hardwarea71 Human Factorsa71 Logisticsa71 Occupational Healtha71 Procurement Small Business & Industrial RelationsAdditional Info: Approval Info: a71 Approval Date: 2001-03-23a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
