1、Lessons Learned Entry: 0252Lesson Info:a71 Lesson Number: 0252a71 Lesson Date: 1993-08-12a71 Submitting Organization: LERCa71 Submitted by: S. PapellSubject: Roof Penetration Coverings Description of Driving Event: A roof penetration cover exposed to high temperature from an exhaust stack caught fir
2、e. The cover appeared to be composed of only sheet metal but, upon further inspection, was actually composed of plywood placed between two thin pieces of sheet metal.Lesson(s) Learned: Roof coverings which appear to be made of sheet metal may contain combustible materials. These coverings could catc
3、h fire when exposed to high temperature exhaust stacks.Recommendation(s): Inspect all roof covers penetrated by hot exhaust systems for existing combustible materials. Replace covers if such materials are found.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission
4、Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AAdditional Key Phrase(s): a71 FacilitiesAdditional Info: Approval Info: a71 Approval Date: 1994-06-15a71 Approval Name: Maria Havenhilla71 Approval Organization: LERC/EBASa71 Approval Phone Number: 216-977-1483Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
