ML14055A213
| ML14055A213 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 02/25/2014 |
| From: | Nadiyah Morgan Plant Licensing Branch 1 |
| To: | Plant Licensing Branch 1 |
| Morgan N | |
| References | |
| TAC MF3413, TAC MF3414 | |
| Download: ML14055A213 (3) | |
Text
February 25, 2014 MEMORANDUM TO:
FILE FROM:
Nadiyah S. Morgan, Project Manager /ra/
Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulations
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 -
SUMMARY
OF TELEPHONE CONFERENCE REGARDING THE VERBAL AUTHORIZATION OF RELIEF REQUEST RR-ISI-04-08, REVISION 1 (TAC NOS. MF3413 AND MF3414)
This memorandum summarizes the telephone discussion on February 20, 2014, between the U.S. Nuclear Regulatory Commission (NRC) staff and Calvert Cliff Nuclear Power Plant, LLC, the licensee. The discussion was in regard to the licensees request for relief RR-ISI-04-08, Revision 1 for Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 (Calvert Cliffs). Participants in the discussion included:
NRC Licensee Dee Morgan Ken Greene Ben Beasley Ben Scott John Tsao Dave Alley By letter dated January 29, 2014 (Agencywide Document and Access Management System (ADAMS) Accession No. ML14034A173), as supplemented by letter dated February 14, 2014 (ADAMS Accession No. ML14050A127), the licensee requested relief from certain requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, IWA-4000 for Calvert Cliffs. The licensee proposed an alternate repair, on a contingency basis, for buried saltwater system ductile cast iron piping, as documented in Relief Request RR-ISI-04-08, Revision 1. Specifically, the licensee proposed to repair potential defect area(s) in the subject piping by installing a seal assembly. Based on the review of the design, installation, inspection, pressure testing, and stress calculations, the NRC staff finds that the proposed alternate repair will isolate the defect area from further corrosion, support the internal pressure in the pipe, and provide leak tightness for the subject pipe.
On the basis of information submitted, the NRC staff has determined that the proposed repair will restore the pressure boundary and provide reasonable assurance that the structural integrity and leak tightness of the repaired saltwater piping will be maintained. The NRC staff finds that complying with the specified ASME Code requirement would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety. Accordingly, the NRC staff has concluded that the licensee adequately addressed all of the regulatory requirements set forth in Title 10 of the Code of Federal Regulations Section 50.55a(a)(3)(ii).
Effective February 20, 2014, the NRC staff authorized the use of Relief Request RR-ISI-04-08, Revision 1 at Calvert Cliffs.
All other requirements of ASME Code,Section XI, for which relief was not specifically requested and authorized by the NRC staff remain applicable, including the third party review by the Authorized Nuclear In-service Inspector.
This verbal authorization does not preclude the NRC staff from asking additional clarifying questions regarding Relief Request RR-ISI-04-08, Revision 1 while preparing the subsequent written safety evaluation. The NRC staffs goal is to issue the written authorization documenting the NRC staffs safety evaluation within 150 days in accordance with the Office of Nuclear Reactor Regulation procedures.
The licensee did not have any comments or questions.
Docket Nos. 50-317 and 50-318
ML14055A213 OFFICE LPLI-1/PM LPLI-1/LA LPLI-1/BC NAME NMorgan KGoldstein BBeasley DATE 02/25/14 02/25/14 02/25/14