• Thank you for visiting the Cafe Rad Lab Forum
  • We present & discuss radiation health, science & news
  • To keep you informed about vital nuke information.
Hello There, Guest! Login Register


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
MO_Callaway_1
#1
Nuclear plant gets all-clear in inspection | http://www.newstribune.com/news/local/st...on/715850/

[ My edits/comments are enclosed in brackets and highlighted in red. ]

March 3rd, 2018

The U.S. Nuclear Regulatory Commission has completed its end-of-cycle performance assessment of Callaway nuclear plant, determining the plant’s performance in 2017 “preserved public health and safety.”

Fadi Diya, senior vice president and chief nuclear officer at Ameren Missouri’s Callaway Plant, recently was notified of these results.

The assessment reviewed performance indicators [PI] , inspection results and enforcement actions from Jan. 1 through Dec. 31.

The NRC also determined the performance at the Callaway Plant during the most recent quarter was within the Licensee Response Column, the highest performance category of the NRC’s Reactor Oversight Process Action Matrix, because all inspection findings had low safety significance and all PIs were within the expected range.

Therefore, the NRC plans to conduct ROP baseline inspections at the facility.

The plant is inspected frequently.

In late June 2017, an NRC security inspection found “very low security significance” findings. [ This means the security guards weren't caught sleeping on the job or falsifying records. This has nothing to do with the systems viability. ]

A refueling outage last year [2017] lasted longer than expected, while workers had a 10,000-item checklist to finish.
[ If it's inspected so frequently how did a 10,000 item checklist accumulate? ]
[ The 2017 RFO was originally planned to last 44 days, it actually took 72 days. ]

The outage began Oct. 7, and 1,000 workers were temporarily added to the plant’s 800-person workforce.

The refueling and maintenance outage ended Dec. 20 with one-third of the plant’s 193 fuel assemblies replaced and a complete overhaul of the main generator stator assembly, said Barry Cox, senior director of nuclear operations.
A stator is the stationary part of a rotary system found in electric generators and motors, and more.

Refueling takes place about every 18 months. [ 365 days + 180 days = 545 days ]


Prior to this planned outage, the Callaway plant had a continuous run of 514 days, one of the longest in the plant’s 33-year history.  [ so the unit couldn't run from RFO to RFO without shutdown, one of the longest in 33 years. Does this mean that it's unusual for this unit to NOT break down between refueling outages? ]

The next refueling is planned in spring 2019.

The plant is licensed to operate through 2044. It typically generates 20 percent of the electricity for Ameren Missouri’s 1.2 million customers.
The Callaway Plant began operating Dec. 19, 1984, and is the state’s only commercial nuclear unit.

[ This is a classic example of a fluff piece boosting the nuclear industry. ]

[ What this article doesn't do is locate the unit. It's approx 40 km ( 25 mi ) NE of Jefferson City, MO ( an EPA radmon stn ) 50 km ( 30 mi ) SE of Columbia, MO, and about 100 km (62 mi) W of St. Louis, MO (an EPA radmon stn) and those are just the major cities. ]

[ Nothing about the past pollution either. ]

----------------------

INITIATION OF PLANT SHUTDOWN DUE TO RCS LEAKAGE

https://www.nrc.gov/reading-rm/doc-colle...ml#en51253

"On July 23, 2015 at 0115 [CDT], Callaway Plant initiated a shutdown required by Technical Specifications (TS).

At 2139 [CDT] on July 22, 2015, TS 3.4.13 Condition A was entered due to unidentified RCS [ Reactor Coolant System ] leakage being in excess of the 1 gpm [ gallon per minute ] TS limit.

[ What kind of water flow is 1 gpm? At my house 1 gpm is the flow coming out of the kitchen sink faucet at full open, and I have a low flow aerator for conservation. That's liquid water under relatively low pressure. ]

The leak was indicated by an increase in containment radiation readings, increasing sump levels, and decreasing levels in the Volume Control tank (VCT).

"A containment entry identified a steam plume; due to personnel safety the exact location of the leak inside the containment building could not be determined.

"At this time radiation levels inside [the] containment are stable and slightly above normal.
[ Notice they don't put a value on the levels. ]

There have been no releases from the plant above normal levels.

"The [NRC] Senior Resident Inspector was notified."

[ Leak identified at 2139 [CDT] on July 22, 2015, they stood around try to figure out what to do until July 23, 2015 at 0115 [CDT], so roughly 3 1/2 hours or 210 mins AFTER they identified the leak. No info on how long it may have been leaking prior to someone noticing something was wrong. ]

---------------------------------

[ Here's an article dealing with another Callaway event and analysis of how media will gloss it over. ]

Another way to bury the lead: Refer to cobalt and tritium as chemicals in the headline.
[url=https://robertsingleton.wordpress.com/2014/08/05/another-way-to-bury-the-lead-refer-to-cobalt-and-strontium-as-chemicals-in-the-headline/][/url]
https://robertsingleton.wordpress.com/20...-headline/

Posted on August 5, 2014

[ from the blog ]
About Robert Singleton

By day, I work for a call center. In my spare time, I try to save my hometown (and planet) from a nearly constant onslaught of greedheads, lunatics and land developers. I live in a fictional town called Austin, Texas, where I go to way too many meetings.

[ This is just some of the history of Callaway, considering the entire history makes one wonder how the NRC can claim Callaway operations “preserved public health and safety". ]

[ Here's the letter ] https://www.nrc.gov/reactors/operating/o...2017q4.pdf

[ Here's the NRC announcement of inspection review results ] https://www.nrc.gov/reading-rm/doc-colle...18-008.pdf

[ And here you can read each units letter ( 2017q4 ) ] https://www.nrc.gov/reactors/operating/o...smrpt.html
 
Reply
#2
(03-06-2018, 03:08 PM)Staup Wrote: [ Nothing about the past pollution either. ]

----------------------

INITIATION OF PLANT SHUTDOWN DUE TO RCS LEAKAGE

https://www.nrc.gov/reading-rm/doc-colle...ml#en51253

"On July 23, 2015 at 0115 [CDT], Callaway Plant initiated a shutdown required by Technical Specifications (TS).

At 2139 [CDT] on July 22, 2015, TS 3.4.13 Condition A was entered due to unidentified RCS [ Reactor Coolant System ] leakage being in excess of the 1 gpm [ gallon per minute ] TS limit.

[ What kind of water flow is 1 gpm? At my house 1 gpm is the flow coming out of the kitchen sink faucet at full open, and I have a low flow aerator for conservation. That's liquid water under relatively low pressure. ]

The leak was indicated by an increase in containment radiation readings, increasing sump levels, and decreasing levels in the Volume Control tank (VCT).

"A containment entry identified a steam plume; due to personnel safety the exact location of the leak inside the containment building could not be determined.

"At this time radiation levels inside [the] containment are stable and slightly above normal.
[ Notice they don't put a value on the levels. ]

There have been no releases from the plant above normal levels.

"The [NRC] Senior Resident Inspector was notified."

Hi Staup, these are kinda interesting when you break them out for us.  I'll just bet all that past pollution was within limits.  So, a small steam leak was found in containment but nothing more said.  Will they be fixing that leak or will they just monitor the leak until it gets worse?
"The map is not the territory that it is a map of ... the word is not the thing being referred to."
 
Reply
  


Forum Jump:


Browsing: 1 Guest(s)