ML15110A089

Request for Additional Information Regarding Relief Request 14-CN-002 for Catawba, Unit 1

ML15110A089
Person / Time
Site:	Catawba
Issue date:	04/22/2015
From:	Geoffrey Miller Plant Licensing Branch II
To:	Henderson K Duke Energy Carolinas
Miller G
References
TAC MF4864, TAC MF4865
Download: ML15110A089 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 22, 2015 Mr. Kelvin Henderson Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, NC 29745

SUBJECT:

CATAWBA NUCLEAR STATION, UNITS 1 AND 2: REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST 14-CN-002 FOR CATAWBA, UNIT 1 (TAC NOS. MF4864 AND MF4865)

Dear Mr. Henderson,

By letter dated September 15, 2014, Duke Energy Carolinas, LLC, submitted a relief request for the Catawba Nuclear Station, Units 1 and 2 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14265A043). The proposed relief would authorize continued use of High Density Polyethylene in Class 3 Service Water Piping for the fourth 10-year ISi Interval at Catawba Nuclear Station, Units 1 and 2.

The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the licensee's submittal and determined that additional information is needed in order to complete the NRC staff's review. Enclosure 1 describes this request for additional information (RAI). In a teleconference on April 13, 2015, Duke staff agreed to a response of 30 days from the date of this letter.

If you have any questions, please call me at 301-415-2481.

G. Edward Miller, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414

Enclosure:

As stated cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUEST 14-CN-002 USE OF HOPE IN CLASS 3 SERVICE WATER PIPING DUKE ENERGY CAROLINAS, LLC CATAWBA NUCLEAR STATION, UNITS 1 AND 2 DOCKET NOS. 50-413 AND 50-414 TAC NOS. MF4864 AND MF4865 By letter dated September 15, 2014, Duke Energy Carolinas, LLC, submitted a relief request for the Catawba Nuclear Station, Units 1 and 2 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14265A043). The proposed relief would authorize continued use of High Density Polyethylene in Class 3 Service Water Piping for the fourth 10-year ISi Interval at Catawba Nuclear Station, Units 1 and 2. In order for the NRC staff to complete its review of the relief request, the following additional information is requested.

1. Please oonfirm your Construotion Code of reoord for buried ASME Class 3 piping is ASME Boiler and Pressure Vessel Code, Seotion Ill, Subseotion ND, 1974 Edition through Summer 1974 Addenda. 1

2. In the submittal you state that approximately 20,000 linear feet of HOPE material in non-safety related Low Pressure Service Water System (RL system) has been in service since 1998 and that the continued operability of this system provides evidence of long-term reliability of HOPE material. Have there been any indications of leaking or flaws in the RL buried piping? If so, what was the method of repair for this piping?

3. You state that portions of the RL piping are inside the plant and, as such, are accessible for inspection. Provide the inspection history for this piping, including type of inspection, frequency of inspection, and repair history. What is the future inspection plan/procedure for this piping?

4. If the RL piping starts to show degradation, what enhanced monitoring of the RN piping would be put into place?

1 In a teleconference on April 13, 2015, Duke identified that the Construction Code of record was specified in Section 2 of the relief request. No further information is needed with regard to this question.

Enclosure

ML 1511 OA089 *via E-mail OFFICE NRR/LPLl-1/PM NRR/LPL2-1/LA NRR/DE/EPNB NRR/LPL2-1 /BC NAME GEMiller SFigueroa DAiiey* RPascarelli DATE 04/21/15 04/21/15 03/28/15 04/22/15