Diablo Canyon Unit's "x" values for 3.9 and 4.6 are the same as the Dominion Units.
3.9 Unplanned reactivity change caused by equipment problem or personnel error. * Reactor power change ≥ 0.5% RTP when > 5% RTP * Reactivity change ≥ 350 pcm when ≤ 5% RTP
4.6. Unplanned reactivity change caused by equipment problem or personnel error. * Reactor power change < 0.5% RTP when >5% RTP * Reactivity change < 350 pcm and > 150 pcm when ≤ 5% RTP
Ken Kargol DCPP Reactor Engineering 805 545-4075
________________________________
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Charlene N Chotalal Sent: Wednesday, December 29, 2010 5:24 AM To: PWR Reactivity Management Subject: Re: [Pwrrm] values of "x" for PI
This is what we use for the Dominion Units (Surry, Kewanee, North Anna and Millstone):
3.9 Unplanned Reactivity Change Caused by Equipment Problem or Personnel Error
* Reactor Power Change >0.5% RTP When >5% RTP
* Reactivity Change >350 pcm When <5% RTP
4.6 Unplanned Reactivity Change Caused by Equipment Problem or Personnel Error
* Reactor Power Change < 0.5% RTP When >5% RTP
* Reactivity Change <350 pcm and >150 pcm When < 5% RTP
Charlene Chotalal
Lead Reactor Engineer
Nuclear Analysis & Fuels, Surry Power Station
Dominion Generation
Phone: 757-365-2819; Fax: 757-365-2750
E-mail: Charlene.N.Chotalal @dom.com
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Fago, Carl D Sent: Wednesday, December 29, 2010 7:53 AM To: PWR Reactivity Management Subject: Re: [Pwrrm] values of "x" for PI
Here is what Duke Energy (Oconee Nuclear Station, Catawba Nuclear Station, & McGuire Nuclear Station) uses:
A positive change in reactivity GREATER THAN OR EQUAL TO:
・ 0.05% ΔK/K (50 pcm) beyond intended change or expected tolerance (Mode 2 only) OR
・ 0.35% ΔK/K (350 pcm) beyond intended change or expected tolerance (Mode 3, 4, 5, and 6
only)
A negative change in reactivity GREATER THAN OR EQUAL TO 0.15% ΔK/K (150 pcm)
beyond intended change or expected tolerance (Mode 2 only)
Carl
Carl D. Fago
Event Recovery Manager
Oconee Nuclear Station
Duke Energy Carolinas
Phone: (864) 873-3047
Fax: (864) 873-3374
Email: Carl.fago@duke-energy.com
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of ddgoff@aep.com Sent: Tuesday, December 28, 2010 2:53 PM To: pwrrm@retaqs.com Subject: [Pwrrm] values of "x" for PI
What values of "x" are plants using for example criteria 3.9 and 4.6 in the PWR Reactivity Management Performance Indicator PI?
David Goff Reactor Engineer Donald C. Cook Nuclear Plant 269-465-5901 x1465
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.