PWRRM September 2008

pwrrm@retaqs.com

12 participants
6 discussions

Fw: Request for Information: Automatic Rod withdrawal
by ddgoff＠aep.com 29 Sep '08

29 Sep '08

The CNP philosophy is operate with Rod Control in Automatic. We believe automatic operation provides the fastest response to an unanticipated transient. There are no plans to disable the automatic rod withdrawal feature. David Goff Reactor Engineer Donald C. Cook Nuclear Plant 269-465-5901 x1465 ----- Forwarded by David D Goff/BC2/AEPIN on 09/24/2008 07:27 AM ----- -----Original Message----- From: pwrrm(a)retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Charlene.N.Chotalal(a)dom.com Sent: Tuesday, September 16, 2008 1:46 PM To: pwrrm(a)retaqs.com Subject: [Pwrrm] Request for Information: Automatic Rod withdrawal At Surry Power Station, we had an event where our control rods automatically stepped out 2 steps due to an incorrect Tave-Tref deviation indication. There has been talk of disabling automatic rod withdrawal here at the station and I wanted to know what other plants have done regarding this system. Has your plant disabled the Automatic rod withdrawal function? If not, why not? Are there plans to do so? Charlene Chotalal Reactor Engineer Surry Power Station Work: (757)-365-2819 Email: Charlene.N.Chotalal(a)dom.com "I have to go count neutrons at the plant. Conservation of mass. It's the law!"

1 0

Request for Information: Automatic Rod withdrawal
by Charlene.N.Chotalal＠dom.com 23 Sep '08

23 Sep '08

At Surry Power Station, we had an event where our control rods automatically stepped out 2 steps due to an incorrect Tave-Tref deviation indication. There has been talk of disabling automatic rod withdrawal here at the station and I wanted to know what other plants have done regarding this system. Has your plant disabled the Automatic rod withdrawal function? If not, why not? Are there plans to do so? Charlene Chotalal Reactor Engineer Surry Power Station Work: (757)-365-2819 Email: Charlene.N.Chotalal(a)dom.com "I have to go count neutrons at the plant. Conservation of mass. It's the law!" CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.

4 3

Re: [Pwrrm] Fw: Standard Ramp Plans
by ddgoff＠aep.com 23 Sep '08

23 Sep '08

> ----- Forwarded by William V Ferguson/BC2/AEPIN on 09/16/2008 01:46 PM ----- > > Adina.K.Lafrance(a)dom.com > Sent by: pwrrm(a)retaqs.com > > 09/16/2008 12:39 PM > > Please respond to > PWR Reactivity Management <pwrrm(a)retaqs.com> > > > > Two Questions involving standard ramp plans (the plans given to ops > for common ramping needs- turbine balance shot, misaligned rod, > backing off RTP, securing MFP): > > How many cases are run for the standard ramp plans given to ops? > (our sites run between six per month per unit to 16 per quarter) > > How often are standard ramp plans updated at each site? (we do > monthly for two of our sites, quarterly at the other two) > Operations has requested and Reactor Engineering provides, at the beginning of each cycle, reactivity plans for the following scenarios: 100% to 55% over one hour, 100% to 55% over four hours, 100% to 17% over four hours, and 100% to 17% over five hours. A set of plans is provided at 1 GWd/MT intervals for the entire cycle. These plans are based on design data provided by the vendor model in the NuPOP. Cook does not have an online core model, so updating the plans would have no effect; they are all provided at BOC. David Goff Reactor Engineer Donald C. Cook Nuclear Plant 269-465-5901 x1465 ---------------------------------------------------------------- This e-mail message and all attachments transmitted with it from the Nuclear Generation Group of American Electric Power are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.

2 1

Tramp or background Reduction
by wvferguson＠aep.com 18 Sep '08

18 Sep '08

Hello all, at Cook Unit 1, we experienced 7 fuel defects in the previous fuel cycle, so our 'tramp' or 'background' levels are a little higher than we have seen in recent history. Has anyone made attempts to reduce the 'background' or 'tramp' levels at their site? thanks, wvf William Ferguson American Electric Power Nuclear Fuels and Safety Analysis (269) 697-5139 ---------------------------------------------------------------- This e-mail message and all attachments transmitted with it from the Nuclear Generation Group of American Electric Power are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.

3 2

Re: [Pwrrm] Request for Information: Automatic Rod withdrawal
by Bob_Tomonto＠fpl.com 16 Sep '08

16 Sep '08

Florida Power & Light Company Turkey Point Units 3 and 4 disabled automatic rod withdrawal years ago. |---------+----------------------------> | | Charlene.N.Chotal| | | al(a)dom.com | | | Sent by: | | | pwrrm(a)retaqs.com | | | | | | | | | 09/16/2008 02:45 | | | PM | | | Please respond to| | | "PWR Reactivity | | | Management" | | | | |---------+----------------------------> >--------------------------------------------------------------------------------------------------------------------------------------------------| | | | To: pwrrm(a)retaqs.com | | cc: | | Subject: [Pwrrm] Request for Information: Automatic Rod withdrawal | >--------------------------------------------------------------------------------------------------------------------------------------------------| At Surry Power Station, we had an event where our control rods automatically stepped out 2 steps due to an incorrect Tave-Tref deviation indication. There has been talk of disabling automatic rod withdrawal here at the station and I wanted to know what other plants have done regarding this system. Has your plant disabled the Automatic rod withdrawal function? If not, why not? Are there plans to do so? Charlene Chotalal Reactor Engineer Surry Power Station Work: (757)-365-2819 Email: Charlene.N.Chotalal(a)dom.com "I have to go count neutrons at the plant. Conservation of mass. It's the law!" CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you._______________________________________________ PWRRM mailing list PWRRM(a)retaqs.com http://www.keffective.com/mailman/listinfo/pwrrm

1 0

Standard Ramp Plans
by Adina.K.Lafrance＠dom.com 16 Sep '08

16 Sep '08

Two Questions involving standard ramp plans (the plans given to ops for common ramping needs- turbine balance shot, misaligned rod, backing off RTP, securing MFP): How many cases are run for the standard ramp plans given to ops? (our sites run between six per month per unit to 16 per quarter) How often are standard ramp plans updated at each site? (we do monthly for two of our sites, quarterly at the other two) Adina LaFrance Nuclear Analysis & Fuel Reactor Engineer Surry Power Station Email: Adina.K.LaFrance(a)Dom.com Phone: 757-365-2658 Pager #: 4290 CONFIDENTIALITY NOTICE: This electronic message contains information which may be legally confidential and/or privileged and does not in any case represent a firm ENERGY COMMODITY bid or offer relating thereto which binds the sender without an additional express written confirmation to that effect. The information is intended solely for the individual or entity named above and access by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution, or use of the contents of this information is prohibited and may be unlawful. If you have received this electronic transmission in error, please reply immediately to the sender that you have received the message in error, and delete it. Thank you.

6 7

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

PWRRM September 2008