NRC Event Number: 51644 (bottom of page)
It is in St. Francisville, LA. INFO
Event Date: 01/09/2016
Event Time: 02:37 [CST]
AUTOMATIC REACTOR SCRAM ON MAIN STEAM ISOLATION DUE TO ELECTRICAL FAULT
On 1/9/16 at 0237 [CST], River Bend Station sustained a reactor scram during a lightning storm. An electrical transient occurred resulting in a full main steam isolation [MSIV] (Group 6) and a Division II Balance of Plant isolation signal. During the scram, level 8 occurred immediately which tripped the feed pumps. A level 3 signal occurred also during the scram. Subsequent level 3 was received three times due to isolated vessel level control. The plant was stabilized and all spurious isolation signals reset, then the MSIVs were restored. The plant is now stable in Mode 3 and plant walkdowns are occurring to assess the transient.”
During the scram, all rods inserted into the core. The plant was initially cooled down using safety relief valves. Offsite power is available and the plant is in its normal shutdown electrical lineup.
The licensee has notified the NRC Resident Inspector.
Luckily offsite power was available and there wasn’t a flood or anything shutting it off!
Mining Awareness – Louisiana Nuclear Reactor Scrammed by Lightning Strike
Extra inspections ordered by NRC bosses in April didn’t seem to do much good. WAFB report.
Sept. 2015 inspection shows troubles at River Bend NPP.
Jan. 16 UPDATE
Mining Awareness – Lightening Scrammed Nuclear Reactor Still at Zero Power
“Less than one week prior:
Potential Uncontrolled Radiation Release, Secondary Containment Declared Inoperable so they appear to have vented it, presumably releasing radiation. Notification came 2 days too late to be useful to people:
“10 CFR Section:
50.72(b)(3)(v)(C) – POT UNCNTRL RAD REL
SECONDARY CONTAINMENT DECLARED INOPERABLE “
SOURCE – “MONDAY, JANUARY 11, 2016
Special Inspection in 2015 Didn’t Fix a Thing at Crap Plant River Bend
I got a special inspection over reactor vessel level control during a scram in 2015 special inspection. The problem is they didn’t do any scram testing and all the corrective action didn’t take effect for many years. ( well, Christmas scram in 2014) (They need to purposely scram a few times with everyone on high alert to watch the plant’s and staffs response. Then devise a scheme to fix it fast. Just like initial plant operational testing…)
“During the scram, level 8 occurred immediately“
So here we go again after a special inspection effectively nothing is fixed. Vessel level is just banging around…reactor vessel goes up and down like a mad man and tripping the feed pumps.
Lightning is not suppose to trip a nuclear plant. Did something crap out in their switchyard (fail) during a lightning strike.
When do they become a Pilgrim with too many scams…enhanced inspections because they are banging the whole plant around like level?”
Mississippi River Edge Nuke Plant Watching
[ UPDATES WILL GO HERE ]
Quad Cities NPP in Illinois is on the Miss. River –
Event Number: 51650
Event Date: 01/12/2016
Event Time: 13:40 [CST]
MOMENTARY LOSS OF SECONDARY CONTAINMENT
“On January 12, 2016, at 1340 CST, an alarm was received indicating secondary containment differential pressure rose unexpectedly above the Technical Specification Surveillance Requirement, SR 184.108.40.206.1, limit of 0.10 inch of vacuum water gauge. A reactor building supply fan was immediately secured to restore differential pressure below the Technical Specification limit. The secondary containment differential pressure returned to below the Technical Specification limit within one minute. The Standby Gas Treatment System remained in standby, and fully operable. At 1341 CST, the secured reactor building supply fan was restarted to restore the normal ventilation lineup. The secondary containment differential pressure remained below the Technical Specification limit. Troubleshooting is in progress.
“This condition represents a failure to meet Surveillance Requirement 220.127.116.11.1. As a result, entry into Technical Specification 18.104.22.168, Condition A, was made momentarily due to secondary containment being inoperable.
“Given the temporary loss of secondary containment, this event is reportable under 50.72(b)(3)(v)(c) as an event or condition that could have prevented the fulfillment of a safety function.
Quad Cities info – has map
Louisiana’s River Bend Nuclear Station Shuts Down for Repairs
River Bend . . . shut down operations Thursday night (1-15) when water began to flow into the plant (!!!).
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Nuke Pro – Aging Nuclear Plants Are Experiencing Multiple Mechanical, Electrical, and Control Failures All At Once – tells about River Bend NPP