ML15209A974
| ML15209A974 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 08/24/2015 |
| From: | Jeffrey Whited Plant Licensing Branch 1 |
| To: | Franke J Susquehanna |
| Jeff Whited, NRR/DORL/LPLI-2, 415-4090 | |
| References | |
| TAC MF5151, TAC MF5152 | |
| Download: ML15209A974 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Jon A. Franke Site Vice President Susquehanna Nuclear, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 August 24, 2015
SUBJECT:
SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO ADOPT TECHNICAL SPECIFICATIONS TASK FORCE TRAVELER (TSTF)-425 (TAC NOS. MF5151 AND MF5152)
Dear Mr. Franke:
By letter dated October 27, 2014, as supplemented by letter dated July 2, 2015, Susquehanna Nuclear, LLC submitted a license amendment request for the Susquehanna Steam Electric Station, Units 1 and 2 (SSES). The proposed amendment would modify the SSES technical specifications by relocating specific surveillance frequencies to a licensee-controlled program with the implementation of Nuclear Energy Institute 04-10, "Risk-Informed Technical Specifications Initiative 5b, Risk-Informed Method for Control of Surveillance Frequencies." To complete its review, the U.S. Nuclear Regulatory Commission staff requests responses to the enclosed questions.
The draft questions were sent to Mr. Richard Mcintosh to ensure that they were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. Please respond to the enclosure within 30 days of the date of this letter.
If you have any questions regarding this matter, please contact me at 301-415-4090 or Jeffrey.Whited@nrc.gov.
Docket Nos. 50-387 and 50-388
Enclosure:
Request for Additional Information cc w/enclosure: Distribution via Listserv Sincerely, Jeffrey A. Whited, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO ADOPT TECHNICAL SPECIFICATIONS TASK FORCE TRAVELER-425 TO RELOCATE SPECIFIC SURVEILLANCE FREQUENCIES TO A LICENSEE-CONTROLLED PROGRAM SUSQUEHANNA NUCLEAR. LLC SUSQUEHANNA STEAM ELECTRIC STATION. UNITS 1AND2 DOCKET NOS. 50-387 AND 50-388 By letter dated October 27, 2014, 1 as supplemented by letter dated July 2, 2015,2 Susquehanna Nuclear, LLC (the licensee), submitted a license amendment request for the Susquehanna Steam Electric Station, Units 1 and 2 (SSES). The proposed amendment would modify the SSES technical specifications by relocating specific surveillance frequencies to a licensee-controlled program with the implementation of Nuclear Energy Institute (NEI) 04-10, "Risk-Informed Technical Specifications Initiative Sb, Risk-Informed Method for Control of Surveillance Frequencies."3 To complete its review, the U.S. Nuclear Regulatory Commission staff requests responses to the following questions.
- 8.
In the response to request for additional information (RAI) 3, regarding Supporting Requirement (SR) HR-82, the licensee clarified that the intent of the finding and observation (F&O) resolution was to indicate that there is no longer any reliance on staggered testing/maintenance principles for screening purposes, and that the pre-
. initiator process was used for screening. The licensee's response also seems to suggest that all common mode errors were screened out. Discuss the justification and conclusions on screening pre-initiator common mode errors. Also, discuss the considerations and the bases for the inclusion or exclusion of modeling of common-mode errors in the probabilistic risk assessment (PRA).
- 9.
The response to RAI 4 does not discuss reflecting the current plant configuration and operating experience when considering external events using NEI 04-01 guidance. (The response does confirm this for the internal events analysis.) Please explain whether evaluation of fire risk and other external events supporting this application reflects, or considers, the current plant configuration and operating experience.
1 Agencywide Documents Access and Management System (ADAMS) Package Accession No. ML14317A052.
2 ADAMS Accession No. ML15183A248.
3 ADAMS Accession No. ML071360456.
- via memo dated OFFICE DORL/LPLl-2/PM DORL/LPLl-2/LA DRA/APLA/BC DORL/LPLl-2/BC DORL/LPLl-2/PM NAME JWhited LRonewicz SRosenberg*
DBroaddus JWhited DATE 08/20/2015 07/30/2015 07/28/2015 08/24/2015 08/24/2015