ML20042E945
| ML20042E945 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 04/27/1990 |
| From: | Le N Office of Nuclear Reactor Regulation |
| To: | Eury L CAROLINA POWER & LIGHT CO. |
| Shared Package | |
| ML20042E946 | List: |
| References | |
| TAC-73351, TAC-73352, NUDOCS 9005040312 | |
| Download: ML20042E945 (3) | |
Text
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'o, UNITED STATES
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pc., *j NUCLEAR REGULATORY COMMISSION
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t WASHINGTON, D. C. 20$65
'*,,,,,,.o April 27, 1990 Docket Nos. 50-325 and 50-324 l
Mr. Lynn W. Eury l
Executive Vice President Power Supply l
Carolina Power & Light Co.
Post Office Box 1551 Raleigh, North Carolina 27602
Dear Mr. Eury:
SUBJECT:
REVIEW 0F BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 & 2 ALTERNATE R0D INJECTION AND RECIRCULATION PUMP TRIP SYSTEMS POWER SUPPLY (TACNOS. 73351/73352) l In early February 1989, the NRC resident inspector performed an inspection on the "as-built" Anticipated Transient Without Scram Alternate Rod Injection and Recirculation Pug Trip (ARI/RPT) Systems at the Brunswick l
Steam Electric Plant (BSEP) Units 1 and 2, and noted that the ARI logic and solenoid valves were powere, from the same distribution panel which was also d
used to supply power to the reactor trip system (RTS) analog transmitter trip units (ATTU).
This raised 20 concern regarding the independence of the ARI l
system power sup ly from that of the RTS.
(See Inspection Reports 50-325/89-02 and 50-324/89-02.
In our letter to you dated August 21, 1989, we presented two options by which you could clarify the "as-built" ARI/RPT system power supply at the DSEP, Units 1 and 2.
Ry letters dated October 23, 1989 and March 13, 1990, you provided additional information to demonstrate the reliability of the power supplies and failure nodes and effects analysis to show that common mode failures will not propagate through the power supplies and disable both the RTS and the ARI/RPT systems.
We have reviewed these submittals and found that the design and the "as-built" pl I I 9005040312 900427 PDR ADOCK 05000324 F
PDC i
Mr. Ly nn W. Eu ry April 27, 1990 configuration for the BSEP, Units 1 and 2, ARI/RPT systems power supply satisfy the option 2 condition as stated in our August 23, 1989 letter.
Therefore, this issue is resolved.
The staff evaluation of your above referenced submittals is enclosed.
Si ncerely.
Original Signed By:
ligoc B. Le, Project Manager Project Directorate 11-1 Division of Reactor Projects.1/11 Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ enclosure:
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0FFICIAL RECORD COPY Document Name:
LTR EURY 73351/2
Mr. L. W. Eu ry Brunswick Steam Electric Plant Carolina Power & Light Company Units 1 and 2 cc:
Mr. Russell B. Starkey, Jr.
Mr. H. A. Cole Vice President Special Deputy Attorney General Brunswick Nuclear Project State of North Carolina P. O. Box 10429 P. O. Box 629 Scuthport, North Carolina 28461 Raleigh, North Carolina 27602 Mr. R. E. Jones, General Counsel Mr. Robert P. Gruber Carolina Power & Light Company Executive tirector P. O. Box 1551 Public Staff - NCUC Raleigh, North Ca rolina 27602 P. O. Box 29520 Raleigh, North Carolina 27626 0520 Ms. Fran kie Raben Board of Connissioners P. O. Box 249 Bolivia, North Carolina 28422 Resident Inspector U. S. Nuclear Regulatory Conmission Star Route 1 P. O. Scx 208 Sou thport, North Carolina 28461 Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Fkrietta Street, Suite 2900 Atlanta, Georgia 30323 Mr. Dayne H. Brown, Director Divisicn of Radiation Protection N. C. Departnent of Environcental, Connerce and Natural Resources P. O. Box 27687 Raleigh, North Carolina 27611-7687 Mr. J. L. Harness Plant General Manager Brunswick Steam Electric Plant P. O. Box 10429 Southport, North Carolina 2B461
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