ML14190A114
| ML14190A114 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 07/12/1991 |
| From: | Adensam E, Lo R Office of Nuclear Reactor Regulation |
| To: | Carolina Power & Light Co |
| References | |
| TAC-80617 NUDOCS 9107180215 | |
| Download: ML14190A114 (4) | |
Text
/P~k REu4,0 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555 July 12, 1991 Docket No. 50-261 LICENSEE:
CAROLINA POWER & LIGHT COMPANY FACILITY: H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2
SUBJECT:
TELEPHONE REQUEST FOR INFORMATION RE:
ECCS EVALUATION FOR LONG-TERM COOLING AND SWITCH OVER TO RECIRCULATION, H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT 2 (TAC NO. 80617)
On June 25, 1991, the SRXB staff (Bob Jones and P. Huang) along with Gus Lainas and Ronnie Lo held the subject telephone conference with Carolina Power & Light Company (CP&L) representatives (Bob Prunty, Jan Kozyra, et al).
At the conclusion of the conversation, CP&L committed to provide responses to the following questions related to loss-of-coolant accidents (LOCA) within two weeks (by July 9, 1991).
Large-break LOCA (1) The basis for the 90% exit quality factor (or the 10% entrainment assumption) after core uncovery is predicted.
(2) The basis (sensitivity results) for the hot-rod and core average axial power shapes, (3) The basis for the inventory balance for the 600 - 1200 second time interval when the water level in the vessel is calculated to be increasing.
Small-break LOCA (1) The basis for the 10 minute time allowance without ECCS injection.
In particular, justify the information (provided on June 24, 1991) which assumes a full Vessel inventory just prior to the switch over to recirculation.
9107180215 910712 PDR ADOCK 05000261 P
PDR rrn I.
-2 The small-break LOCA questions were first asked of CP&L on June 10, 1991.
SubseAment to the subject telephone conference, CP&L (Jan Kozyra, et al.)
called Ronnie Lo to request an extension of their response time to July 15, 1991.
CP&L made the request based on a delay in support from Westinghouse.
Elinor G. Adensam/for Ronnie H. Lo, Senior Project Manager Project Directorate II-1 Division of Reactor Projects -
I/II Office of Nuclear Reactor Regulation cc:
See next page DISTRIBUTION See attached page OFC
- PM:PDII 7'
- SRXBD73 y
- D:
II:
NAME
- RLo:
- E sam DATE
- 9/&4/91
- 7/1//91 9
OFFICIAL RECORD COPY Document Name: MEMO EADENSAM 806 7
Mr. L. W. Eury H. B. Robinson Steam Electric Carolina Power & Light Company Plant, Unit No. 2 cc:
Mr. H. Ray Starling Mr. Dayne H. Brown, Director Manager - Legal Department Department of Environmental, Carolina Power & Ligth Company Health and Natural Resources P. 0. Box 1551 Division of Radiation Protection Raleigh, North Carolina 27602 P. 0. Box 27687 Raleigh, North Carolina 27611-7687 Mr. H. A. Cole Special Deputy Attorney General Mr. Robert P. Gruber State of North Carolina Executive Director P. 0. Box 629 Public Staff -
NCUC Raleigh, North Carolina 27602 P. 0. Box 29520 Raleigh, North Carolina 27626-0520 U.S. Nuclear Regulatory Commission Mr. C. R. Dietz Resident Inspector's Office Manager, Robinson Nuclear Project H. B. Robinson Steam Electric Plant Department Route 5, Box 413 H. B. Robinson Steam Electric Plant Hartsville, South Carolina 29550 P. 0. Box 790 Hartsville, South Carolina 29550 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Mr. Heyward G. Shealy, Chief 101 Marietta Street Bureau of Radiological Health Suite 2900 South Carolina Department of Health Atlanta, Georgia 30323 and Environmental Control 2600 Bull Street Mr. R. Morgan Columbia, South Carolina 29201 General Manager H. B. Robinson Steam Electric Plant P. 0. Box 790 Hartsville, South Carolina 29550
DISTRIBUTION Docket b e NRC PDR Local PDR T. Murley 12-G-18 F. Miraglia 12-G-18 E. Adensam 14-B-20 P. Anderson 14-B-20 R. Lo 14-B-20 OGC 15-B-18 E. Jordan MNBB-3302 R. Jones P. Haung ACRS (10)
P-315 Robinson File