Skip to content

Nuclear Event | Reactor Pressure Vessel [RPV] pressure boundary leakage – Degraded Condition: Susquehanna Nuclear Power Plant, Pennsylvania

2016/06/09

Technological Hazard – Nuclear Event: Reactor Shutdown

North America – USA | State of Pennsylvania, Berwick – Susquehanna Nuclear Power Plant
Location: 41°05’20.0″N 76°08’56.0″W
Present Operational Age: ~34 years
Event: PLANT S/D  – DEGRADED CONDITION

Nuclear Event in USA on Wednesday, 08 June, 2016 at 02:26 [EDT].

DISCOVERY OF UNISOLABLE REACTOR PRESSURE BOUNDARY LEAKAGE

“Susquehanna Unit 1 identified RPV [reactor pressure vessel] pressure boundary leakage from [local power range monitor] LPRM 24-09 housing above the flange during an under vessel leak inspection on 06/08/2016 at 0226 EDT. The leakage point is a through wall indication on the ASME Class 1 LPRM stub tube. The leakage is not isolable from the reactor vessel. The reactor was in Mode 4 at the time of discovery.

“This event is being reported as a degraded condition pursuant to 10CFR50.72(b)(3)(ii)(A).”

A repair plan is being formulated.

The licensee has notified the NRC Resident Inspector.

Source: NRC  Event Number:  51987


Previous Event

Nuclear Event in USA on Monday, 06 June, 2016 at 05:56 [EDT]. ISOLABLE LEAKAGE IDENTIFIED FROM SEAL WATER LINE WELD INSIDE RCS PRESSURE BOUNDARY

Leave a Comment

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s