ML15201A583

NRR E-mail Capture - Prairie Island, Units 1 and 2 - 1-RR-4-9 and 2-RR-4-9 System Leakage Test of Safety Injection Accumulator Nitrogen Piping in Containment (TAC Nos. MF4795 and MF4796)

ML15201A583
Person / Time
Site:	Prairie Island
Issue date:	06/11/2015
From:	Beltz T Plant Licensing Branch III
To:	Carlson G Northern States Power Co, Xcel Energy
References
TAC MF4795, TAC MF4796
Download: ML15201A583 (3)

Text

NRR-PMDAPEm Resource From: Beltz, Terry Sent: Thursday, June 11, 2015 10:03 AM To: Carlson, Glenn A. (Glenn.Carlson@xenuclear.com)

Cc: Alley, David; Rezai, Ali

Subject:

Prairie Island, Units 1 and 2 RR-4-9 and 2-RR-4-9 re: System Leakage Test of Safety Injection Accumulator Nitrogen Piping in Containment (TAC Nos. MF4795 and MF4796)

Dear Dr. Carlson:

Pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a(a)(3), proposed alternatives to the requirements of 10 CFR 50.55a(g), may be used when authorized by the U.S. Nuclear Regulatory Commission (NRC) if the licensee demonstrates that (i) the proposed alternatives would provide an acceptable level of quality and safety or (ii) compliance with the specified requirements would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety.

In the Subject request dated September 3, 2014 (ADAMS Accession Number ML14247A639), as supplemented by letter dated February 4, 2015 (ADAMS Accession Number ML15036A283), Northern States Power Company - Minnesota Corporation (the licensee) requested relief from the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. The requests 1-RR-4-9 and 2-RR-4-9 pertain to the system leakage test of the safety injection accumulator nitrogen piping in containment.

Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a(3)(i), the licensee proposed an alternative system leakage test for the SI accumulator nitrogen piping on the basis that the alternative provides an acceptable level of quality and safety.

While performing its evaluation of the Subject relief requests, the NRC staff has determined that it will be reviewing the requests under 10 CFR 50.55a(a)(3)(ii), in lieu of Section 50.55a(a)(3)(i).

Finally, please be mindful (and to be noted for future submittals) that the NRC staff will be including the following paragraph in its safety evaluation to avoid any confusion regarding the changing of section numbers in 10 CFR 50.55a:

The paragraph headings in 10 CFR 50.55a were changed by Federal Register notice dated November 5, 2014 (79 FR 65776), which became effective on December 5, 2014 (e.g., 10 CFR 50.55a(a)(3)(i) is now 50.55a(z)(1), and 50.55a(a)(3)(ii) is now 50.55a(z)(2)). See the cross reference tables, which are cited in the notice, at ADAMS Accession No. ML14015A191 and ADAMS Package Accession No. ML14211A050.

Please let me know if you have any specific questions or concerns regarding this matter. Thanks.

Sincerely, TERRY A. BELTZ, SENIOR PROJECT MANAGER U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Mail Stop: O-8D15 Phone: (301) 415-3049 Terry.Beltz@nrc.gov Confidentiality Notice: This email message, including any attachments, contains or may contain confidential information intended only for the addressee. If you are not an intended recipient of this message, be advised that any reading, dissemination, forwarding, printing, copying or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by reply message and delete this email message and any attachments from your system.

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2 Hearing Identifier: NRR_PMDA Email Number: 2241 Mail Envelope Properties (87B1F1BDFE5A554CA9DC5EAA75EB6D0D01DE28248381)

Subject:

Prairie Island, Units 1 and 2 RR-4-9 and 2-RR-4-9 re: System Leakage Test of Safety Injection Accumulator Nitrogen Piping in Containment (TAC Nos. MF4795 and MF4796)

Sent Date: 6/11/2015 10:03:15 AM Received Date: 6/11/2015 10:03:00 AM From: Beltz, Terry Created By: Terry.Beltz@nrc.gov Recipients:

"Alley, David" <David.Alley@nrc.gov>

Tracking Status: None "Rezai, Ali" <Ali.Rezai@nrc.gov>

Tracking Status: None "Carlson, Glenn A. (Glenn.Carlson@xenuclear.com)" <Glenn.Carlson@xenuclear.com>

Tracking Status: None Post Office: HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 3061 6/11/2015 10:03:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: