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RO 77-23/1T:on 770920,both doors of reactor bldg emergency personnel access hatch open simultaneously.Caused by personnel error.Doors closed.Forwards LER 77-23/1T.

Accession Number: ML19261F310

Date Released: Wednesday, October 2, 2019

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• ML19261F309 - RO 77-23/1T:on 770920,both doors of reactor bldg emergency personnel access hatch open simultaneously.Caused by personnel error.Doors closed.Forwards LER 77-23/1T. (4 page(s), 10/5/1977)
• ML19261F311 - LER 77-023/01T:on 770926,during heatup operation both doors of reactor bldg emergency personnel access hatch open simultaneously.Caused by failure of interlock,poor hatch design & operator error.Addl interlock to be added. (1 page(s), 10/4/1977)