ML14183A784
| ML14183A784 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 03/06/1997 |
| From: | Mozafari B NRC (Affiliation Not Assigned) |
| To: | Hinnant C CAROLINA POWER & LIGHT CO. |
| References | |
| TAC-M96440, NUDOCS 9703130018 | |
| Download: ML14183A784 (3) | |
Text
~.~pREG, Wb UNITED STATES 0
NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 6, 1997 Mr. C. S. Hinnant, Vice President Carolina Power & Light Company H. B. Robinson Steam Electric Plant, Unit No. 2 3581 West Entrance Road Hartsville, South Carolina 29550
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING THE TECHNICAL SPECIFICATION CHANGE REQUEST TO CONVERT TO THE IMPROVED STANDARD TECHNICAL SPECIFICATIONS FOR THE H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 (TAC NO. M96440)
Dear Mr. Hinnant:
By letter dated August 27, 1996, you submitted a request to convert the current Technical Specifications (TS) for the H. B. Robinson Steam Electric Plant, Unit No. 2 (HBR), to be consistent with the Improved Standard Technical Specifications (ISTS) in NUREG-1431, "Standard Technical Specifications Westinghouse Plants," Revision 1, dated April 1995. To complete our review, we have identified the need for additional information concerning the HBR low temperature over pressurization (LTOP) analysis. The specific information needed is identified below and was discussed during a March 5, 1997, teleconference.
- 1.
The approval of ANF-RELAP was limited to the events listed in Table 2-1 of the March 16, 1992 letter. These included SRP Chapter 15 non-LOCA analyses. The approval stated, "Application of the methodology to events not listed in Table 2-1 should be justified."
LTOP is not an SRP Chapter 15 event, rather it is SRP Section 5.2. Therefore, justify the use of the ANF-RELAP in the LTOP analysis.
- 2.
Explain the assumption of "No dynamic compensation for PORV operation."
Also discuss and justify the change in assumption for PORV opening time from 2.5 seconds in the previous analysis to 2.4 seconds in the new analysis.
- 3.
Describe how instrument uncertainty is accounted for in the analysis.
Specifically, address whether it is factored into the limit or input into the LTOP analysis. Discussions in the submittal (table specified limit of 570 psig) and the answer to Question 6 ("The resulting value of 430 psig is then input into the LTOP analysis...") seem to conflict.
9703130019 970306 PDR ADOCK 05000261 P
Mr. Hinnant 2
To support the NRC staff's review schedule, your written response to this request for additional information is expected within 30 days of the receipt of this letter. Should you have any questions, do not hesitate to contact me at (301) 415-2020.
Sincerely, Original signed by:
Brenda Mozafari, Project Manager Project Directorate II-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-261 cc:
See next page Distribution
,Dockit--File PUBLIC PD II-1 RF S. Varga J. Zwolinski M. Shuaibi J. Lyons C. Schulten C. Grimes OGC ACRS J. Johnson, RH FILENAME -
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11-1 LA:PDII-1 PD:PDII-1 NAME BMozafari Dunni Ton MReinhart DATE 9Y
///97 3/6 /97 3/_/97 COPY ade so
/ Yes No Yes/No
Mr. C. S. Ninnant H. B. Robinson Steam Electric Carolina Power & Light Company Plant, Unit No. 2 cc:
Mr. William D. Johnson Mr. Dayne H. Brown, Director Vice President and Senior Counsel.
Department of Environmental, Carolina Power & Light Company Health and Natural Resources Post Office Box 1551 Division of Radiation Protection Raleigh, North Carolina 27602 Post Office Box 27687 Raleigh, North Carolina 27611-7687 Ms. Karen E. Long Assistant Attorney General Mr. Robert P. Gruber State of North Carolina Executive Director Post Office Box 629 Public Staff -
NCUC Raleigh, North Carolina 27602 Post Office Box 29520 Raleigh, North Carolina 27626-0520 U.S. Nuclear Regulatory Commission Resident Inspector's Office Mr. Max Batavia, Chief H. B. Robinson Steam Electric Plant South Carolina Department of Health 2112 Old Camden Road Bureau of Radiological Health Hartsville, South Carolina 29550 and Environmental Control 2600 Bull Street Regional Administrator, Region II Columbia, South Carolina 29201 U.S. Nuclear Regulatory Commission 101 Marietta St., N.W., Ste. 2900 Mr. J. Cowan Atlanta, Georgia 30323 Vice President Nuclear Services and Environmental Mr. Dale E. Young Support Department Plant General Manager Carolina Power-& Light Company Carolina Power & Light Company Post Office Box 1551 -
Mail 0HS7 H. B. Robinson Steam Electric Plant Raleigh, North Carolina 27602 Unit No. 2 3581 West Entrance Road Hartsville, South Carolina 29550 Mr. Milton Shymlock U. S. Nuclear Regulatory Commission Public Service Commission 101 Marietta Street, N.W. Suite 2900 State of South Carolina Atlanta, Ga. 3023-0199 Post Office Drawer 11649 Columbia, South Carolina 29211 Mr. H. K. Chernoff Supervisor, Licensing/Regulatory Programs Carolina Power & Light Company H. B. Robinson Steam Electric Plant, Unit No. 2 3581 West Entrance Road Hartsville, South Carolina 29550