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Category:E-Mail
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2023-02-21
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From: Shah, Swetha Sent: Monday, November 18, 2013 12:11 PM To: 'rawynegar@aep.com' Cc: Ellegood, John
Subject:
RE: Sheild block wall questions
- Richard, Here are the questions we had with regards to the shield block issue:
- 1. What evaluation has been done for TSC habitability?
- 2. Do EALs permit the use of the alternate radiation monitors / manual sampling if the vent stack monitor becomes inoperable?
- 3. It appears that the calculation to determine the dose as a result of removal of missile blocks has not been updated.
Also, this calculation does not predict dose changes during design basis accidents. Please point to the exact changes in radiation that could result as a result of this modification.
- 4. The EC determines there is no effect on the MCR based on the MCR wall thickness. Are there any specific calculations to prove that the MCR walls actually shield radiation during design basis accident without the presence of missile blocks?
- 5. The EC determines that operator actions in the SI and RHR pump rooms will not be affected because the walls of these rooms consist of thick concrete. Are there any specific calculations to prove that the SI and RHR pump rooms will shield the operators from radiation resulting from design basis accidents once the missile blocks are removed?
- 6. What was the basis for concluding that a 50.59 evaluation was not required?
Thank you!
Swetha Shah From: rawynegar@aep.com [1]
Sent: Friday, November 15, 2013 9:26 AM To: Shah, Swetha
Subject:
Fw: Sheild block wall questions Hello Swetha, I was approached this morning by John Ellegood concerning some questions that you were waiting on responses to this morning concerning the sheild block wall dose calculations. Unfortunately, I have not
been following this particular issue and both Steve and Craig are out of the office. Greg Hill is additionally out of the office and he is the one that answered the origional AR. I cannot find any documentation of questions beyond what were addressed in AR 2012-12972. Could you please forward to me your questions and I can get them dispositioned appropriately if they were not answered in the AR. Do you remember who you were working with to get these answered?
- Thanks, Richard A. Wynegar Compliance Coordinator Regulatory Affairs Cook Nuclear Plant ph: 269-465-5901 x1727 Pager: 1727 rawynegar@aep.com 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.
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.
