During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus Turkey Point Reactor Engineering mark.dicus@fpl.com 305-246-6185
Our fuel movement procedure says
The "authorized location" is generally the spot whence it came. What "significant" means would be determined by the team on a case-by-case basis.
David Goff Reactor Engineer Donald C. Cook Nuclear Plant 269-465-5901 x1465
"Dicus, Mark" Mark.Dicus@fpl.com Sent by: pwrrm@retaqs.com 10/12/2010 10:56 AM Please respond to PWR Reactivity Management pwrrm@retaqs.com
To "'PWR Reactivity Management'" pwrrm@retaqs.com cc
Subject [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched in Containment
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus Turkey Point Reactor Engineering mark.dicus@fpl.com 305-246-6185
Beaver Valley does not have a formal time for such events. It is a judgement call made on a case by case basis.
Travis B. Link Beaver Valley Reactor Engineering P.O. Box 4 - Mail Drop A-BV-A Shippingport, PA 15077 (724) 682-4149 (Work) (412) 667-1487 (Cell) (412) 305-3041 (Pager) (724) 682-4250 (FAX) tlink@firstenergycorp.com
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Wolf Creek does not have a predetermined time limit. We would make that determination on a case by case basis depending on what was making the holdup.
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Dicus, Mark Sent: Tuesday, October 12, 2010 9:57 AM To: 'PWR Reactivity Management' Subject: [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched inContainment
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus
Turkey Point Reactor Engineering
mark.dicus@fpl.com
305-246-6185
For Surry, There is no time limit except for how long you want to have an operator stay with the assembly. We cannot leave the assembly un-attended. So it would be determined on a case by case basis by discussion with the fuel handling tem and the operations crew. We do have drop off locations, a designated location in the SFP and we can select an appropriate cavity location based on the situation, that we can use if the situation warrants.
Adina LaFrance Reactor Engineer Nuclear Analysis and Fuels, Surry Power Station
Dominion Generation Phone: 757-365-2658; Internal: 8-798-2658 E-mail: Adina.K.LaFrance@dom.com
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Dicus, Mark Sent: Tuesday, October 12, 2010 10:57 AM To: 'PWR Reactivity Management' Subject: [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched in Containment
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus Turkey Point Reactor Engineering mark.dicus@fpl.com 305-246-6185
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We do not have a predetermined time (official or unofficial) that we would leave a F/A hanging on the Manipulator Crane. That decision would be made depending on the extent of any necessary repairs should we have equipment issues. If the Manipulator Crane itself was down (as happened at Surry a few years ago) the only way to get rid of an assembly would be manually.
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Dicus, Mark Sent: Tuesday, October 12, 2010 10:57 AM To: 'PWR Reactivity Management' Subject: [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched in Containment
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus Turkey Point Reactor Engineering mark.dicus@fpl.com 305-246-6185
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.
Diablo Canyon does not have a predetermined time limit. We would make a that determination on a case by case basis depending on the situation (and equipment impacted).
________________________________
From: pwrrm@retaqs.com [mailto:pwrrm@retaqs.com] On Behalf Of Dicus, Mark Sent: Tuesday, October 12, 2010 7:57 AM To: 'PWR Reactivity Management' Subject: [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched inContainment
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus
Turkey Point Reactor Engineering
mark.dicus@fpl.com
305-246-6185
Beaver Valley Response
We do not have a specific time limit stated in our refueling procedures. per procedure we can place assembly back to same location it came from, or place near on the baffle at least a kings move away from other fuel to ensure it is not "coupled" to rest of core.
Anthony (A.R.) Burger Supervisor, Reactor Engineering FENOC - Beaver Valley Power Station Phone: (724) 682-4108 Cell: (724) 601-3224 FAX: (724) 682-4250 Email: aburger@firstenergycorp.com
"Dicus, Mark" <Mark.Dicus@fpl.c om> To Sent by: "'PWR Reactivity Management'" pwrrm@retaqs.com pwrrm@retaqs.com cc
10/12/2010 10:58 Subject AM [Pwrrm] Maximum Time for Leaving an "Orphan" Assembly Latched in Containment Please respond to PWR Reactivity Management <pwrrm@retaqs.com >
During our recent core offload at Turkey Point, we had an issue with our upender on the Spent Fuel Pool side. When the upender issue happened, we had an assembly latched in containment, waiting by the upender. We could not place the assembly in the upender until the equipment issue was resolved. This raised a question: how long we would wait until we moved the assembly back to the vessel?
My question to you is this: Does your plant have a formal (or even informal) time limit on how long a fuel assembly can be latched in containment, outside the reactor vessel, and unable to be placed in the upender before you would return the assembly to the reactor vessel and fully lowered (or another safe storage location if you have one)?
Mark Dicus Turkey Point Reactor Engineering mark.dicus@fpl.com 305-246-6185 _______________________________________________ PWRRM mailing list PWRRM@retaqs.com http://www.keffective.com/mailman/listinfo/pwrrm
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