1、Lessons Learned Entry: 0473Lesson Info:a71 Lesson Number: 0473a71 Lesson Date: 1993-07-26a71 Submitting Organization: LERCa71 Submitted by: G. MichalsonSubject: Storage Battery Explosion Description of Driving Event: A battery that was left on a charger over the weekend was used to start a gasoline
2、power generator. This battery was connected in series with another battery and the connection on the negative post was hand tightened. When an attempt was made to start the generator, the battery exploded on approximately the fifth click of the starter solenoid. No damage was done to any equipment o
3、r facilities and no one was injured.The most probable cause of the accident was the severe overcharging of the battery (64 hours at 20 amp/hour). This charging created hydrogen, which combined with air or oxygen and an ignition source to form the explosion. One source of ignition could have been the
4、 loosely attached connection to the battery terminal. Another possible source may have been an internal short at the battery plates, distorted by the severe overcharge condition.Lesson(s) Learned: Batteries stored on a charger can explode during use if overcharged.Recommendation(s): 1. Use automatic
5、 current limiting or timed circuit chargers when charging batteries.2. Operators should be aware of safe practices and proper battery charging instructions.Evidence of Recurrence Control Effectiveness: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
6、-,-Documents Related to Lesson: N/AMission Directorate(s): N/AAdditional Key Phrase(s): a71 Energya71 Hardwarea71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 1996-11-06a71 Approval Name: Sell Jamesa71 Approval Organization: 501-4a71 Approval Phone Number: 216-433-8618Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
