ML13225A750

NRR E-mail Capture - Dresden Nuclear Power Station Inservice Testing Relief Request RV-23H

ML13225A750
Person / Time
Site:	Dresden
Issue date:	08/05/2013
From:	Mozafari B Division of Operating Reactor Licensing
To:	Mathews M Exelon Corp
References
Download: ML13225A750 (4)

Text

NRR-PMDAPEm Resource From: Mozafari, Brenda Sent: Monday, August 05, 2013 10:02 AM To: Mitchel.Mathews@exeloncorp.com

Subject:

RE: Dresden Nuclear Power Station Inservice Testing Relief Request RV-23H Importance: High

Mitch, We recommend that you clarify the last two sentences to be more explicit, e.g., Under replacement activity, these valves were replaced on March 11, 2013, on Unit 2, and on December 8, 2007, on Unit 3. No defects were noted during replacement activity. When you send this (or something that is in this vein) I will add it into ADAMS as an Official Agency Record to support clarification of the original letter. I assume that these words are what you intent to convey.

Thanks, Brenda 301-415-2020 From: Mitchel.Mathews@exeloncorp.com [1]

Sent: Wednesday, July 31, 2013 4:12 PM To: Mozafari, Brenda

Subject:

Dresden Nuclear Power Station Inservice Testing Relief Request RV-23H Ms. Mozafari, In its April 1, 2013, response to NRC request RAI-RV-23H-3 for Dresden Nuclear Power Station, Units 2 and 3, Exelon Generation Company, LLC (EGC) stated that the valve internals for High Pressure Coolant Injection (HPCI) Valves 2(3)-

2301-032 had not been repaired or replaced during the fourth inservice testing interval. That statement was intended to differentiate between valve internal inspection or replacement, and the six-year preventive maintenance activity to replace the entire valve assembly. Again, the activity described in this response is referring to the replacement of the valves on a six year frequency.

1

Additionally, in Attachment 4, Section 4 of its October 30, 2012, EGC stated that, Valve actuation may be indirectly verified by removing the HPCI system from service, filling the drain pot with water until the high level alarm is received, and observing that the high level alarm clears. In this case, the test is normally performed by DNPS Operations Department personnel performing a valve line-up to isolate the 2(3)-2301-32 from the HPCI system. The entire HPCI systems is not removed from service for this test.

Please contact me with any additional need for clarification.

Regards, Mitch Mathews Mitchel Mathews Sr. Regulatory Engineer Corporate Licensing 4300 Winfield Road - 4th Floor Warrenville, IL 60555 Office: 630-657-2819 l Pager: 630-603-0016 l Fax: 630-657-4327 Mitchel.Mathews@exeloncorp.com This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -EXCIP 2

Hearing Identifier: NRR_PMDA Email Number: 804 Mail Envelope Properties (Brenda.Mozafari@nrc.gov20130805100100)

Subject:

RE: Dresden Nuclear Power Station Inservice Testing Relief Request RV-23H Sent Date: 8/5/2013 10:01:54 AM Received Date: 8/5/2013 10:01:00 AM From: Mozafari, Brenda Created By: Brenda.Mozafari@nrc.gov Recipients:

"Mitchel.Mathews@exeloncorp.com" <Mitchel.Mathews@exeloncorp.com>

Tracking Status: None Post Office:

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