ENS 45793
ENS Event | |
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02:55 Mar 26, 2010 | |
Title | Standby Gas Treatment Declared Inoperable After Discovery of Open Demister Door |
Event Description | System Affected: Standby Gas Treatment (SBGT)
Condition: Demister Door Discovered open rendering both trains of SBGT INOP At 2255 [EDT] on 3/25/2010, a Demister Door on 'B' Train of Standby Gas Treatment (SBGT) was found open. The door was closed upon discovery. The door was opened during performance of a scheduled surveillance during the dayshift and it appears that the door was not closed at the completion of work. With this door being open the 'B' Train of SBGT was INOP. Due to the physical configuration of the SBGT System it cannot be immediately verified that the 'A' Train of SBGT would have been able to perform its Safety Related Function since there is a probability that it could have drawn suction through the demister door of the 'B' Train and a normally open crosstie between the Trains. A 10 CFR 50.72 notification is conservatively being made based on the information currently available. This condition has no impact on the health and safety of the public. The licensee informed the NRC Resident Inspector. |
Where | |
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Pilgrim Massachusetts (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+0.17 h0.00708 days <br />0.00101 weeks <br />2.32866e-4 months <br />) | |
Opened: | Michael Hittwer 03:05 Mar 26, 2010 |
NRC Officer: | Steve Sandin |
Last Updated: | Mar 26, 2010 |
45793 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |