Junk Gov Corp TVA: Soiled Underwear Of Staff At Browns Ferry

Usually this comes from long term problems of maintenence with the automated obsolete equipment that washes and reinstalled the resin in the condensate deminerizer. This contradicts anything risk perspective, as this non safety condemin malfunction triggered 1979 Three Mile Island. But you had to have a lot of maintenance problems to create core rubble at TMI. The PWR's pressure operated relief valve (PORV)are very similar valves as the BWR's SRV valves but at a lot higher water pressure. 

This is the first time I remember a notification of high radiation cause by resin intrusion. This had got to be a lot a resin in the reactor. Usually they get a lot of smaller intrusions until the big one. 

Junk condensate deminerizer filter system causes loss of feed system and scram in 2009. These are amazingly complex mechanical and electronic system for being a non safety system. That is why it bites them in the ass over and over again.   

Unit 3 also: Licensee Event Report 50-29612009-001

Duane Arnold Licensee Event Report#2007-006-00

Reactor Shutdown as a Result of a Chemistry Excursion

On March 18, 2007, while operating at 28% power, a chemistry excursion occurred shortly after Condensate Filter Demineralizer 1T-13D was placed in service. The magnitude of the chemistry

excursion required operators to shutdown the reactor in accordance with abnormal operating procedures and plant chemistry procedures. As a result of inserting the manual scram, Primary Containment Isolation System (PCIS) groups 2, 3, and 4 isolations occurred when reactor water level dropped below 170 inches. All isolations went to completion. The reactor water level decrease is normal following a scram from 28% power due to void collapse in the reactor vessel. Reactor water level was subsequently restored to normal and the PCIS group isolations were reset.

Troubleshooting subsequently determined that the chemistry excursion was the result of resin intrusion from Condensate Filter Demineralizers into the Condensate System.

Facility: BROWNS FERRY Region: 2 State: AL Unit: [ ] [ ] [3] RX Type: [1] GE-4,[2] GE-4,[3] GE-4 NRC Notified By: MATTHEW SLOUKA HQ OPS Officer: JEFF HERRERA	Notification Date: 04/06/2016 Notification Time: 17:07 [ET] Event Date: 04/06/2016 Event Time: 15:45 [CDT] Last Update Date: 04/07/2016
Emergency Class: UNUSUAL EVENT 10 CFR Section: 50.72(a) (1) (i) - EMERGENCY DECLARED 50.72(b)(2)(xi) - OFFSITE NOTIFICATION	Person (Organization): REBECCA NEASE (R2DO) BERNARD STAPLETON (IRD) BILL DEAN (NRR) CATHY HANEY (R2RA)

Unit	SCRAM Code	RX CRIT	Initial PWR	Initial RX Mode	Current PWR	Current RX Mode
3	N	Y	100	Power Operation	91	Power Operation

Event Text

UNUSUAL EVENT DECLARED DUE TO MAIN STEAMLINE HIGH HIGH RADIATION CONDITION At 1545 CDT on 04/06/16 Browns Ferry Unit 3 declared and exited the declaration of an unusual event due to a main steam line high high radiation condition. Power to Unit 3 was reduced to 91 percent power. The high radiation condition alarm cleared at 1526 CDT. Browns Ferry Unit 3 reported that the high radiation conditions were due to resin intrusion from the condensate demineralizers into the reactor and hydrogen water chemistry was a potential contributor to the event. The cause is still under investigation. The NRC Resident Inspector has been notified. State and Local notifications were made. Notified DHS SWO, FEMA Ops Center, NICC Watch Officer, FEMA NWC and Nuclear SSA (email). * * * UPDATE FROM BILL BALL TO DANIEL MILLS AT 0034 EDT ON 04/07/2016 * * * "At 1941 [CDT] BFN [Brown's Ferry] determined this notification to be potentially newsworthy due to receiving notification that counties [surrounding the plant] were alerted of this event. No plant conditions changed." The licensee may issue a press release. The licensee will notify the NRC Resident Inspector. Notified R2DO (Nease).