ML20237C848

Advises That Util 870327 Proposed Tech Spec Changes & Schedule for Achieving Compliance W/Generic Ltr 84-09 Acceptable.Util 871120 Request Re Nitrogen Pressurization Sys Requested Prior to Start of Unit 1 Reload 6 Outage

ML20237C848
Person / Time
Site:	Brunswick
Issue date:	12/17/1987
From:	Sylvester E Office of Nuclear Reactor Regulation
To:	Utley E CAROLINA POWER & LIGHT CO.
References
GL-84-09, GL-84-9, TAC-65004, TAC-65005, NUDOCS 8712220224
Download: ML20237C848 (3)

Text

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DEC 171987 Docket Nos. 50-325/324 DISTRIBUTION DocketTfile9 ~~

E. Jordon "NRC'& Local PDRS J. Partlow PD21 R/F ACRS(10)

Mr. E. E. Utley S. Varga Senior Executive Vice President G. Lainas Power Supply and Engineering & Construction E. Adensam Carolina Power & Light Company P. Anderson Post Office Box 1551 E. Sylvester Raleigh, North Carolina 27602 OGC-B

SUBJECT:

COMPLIANCE WITH GENERIC LETTER 84 BRUNSWICK STEAM ELECTRIC PLANT (BSEP), UNITS 1 AND 2 (TAC NOS. 65004 AND 65005)

By letter dated March 27, 1987, Carolina Power & Light Company (CP&L) proposed Technical Specification changes and plant modifications to demonstrate compliance with the provisions of Generic Letter 84-09 relative to removal of potential oxygen sources from primary containment. A nitrogen backup system has been installed to supply pressurized nitrogen for operation of valves needed to mitigate the effects of a postulated loss-of-coolant accident (LOCA).

During normal plant operation, these essential valves are supplied from the plant instrument air system. In the March 27, 1987 letter, CP&L committed to install an additional, normally-open, fail-closed, direct-acting solenoid valve on each drywell instrument air header penetrating the primary containment.

This modification would assure isolation of the instrument air system in the event of an air line break inside containment coincident with a LOCA. CP&L committed to install the additional. air line valves during the next refueling outage for each unit. The Technical Specification changes proposed by the March 27, 1987 submittal added operability and surveillance requirements for the nitrogen backup system. By letter dated August 20, 1987, the NRC issued the proposed Technical Specification amendment and approved the proposed plant modifications.

By letter dated November 20, 1987, CP&L requested approval to change its previous commitments. CP&L proposed to replace the normal instrument air supply with a full-time pressurized nitrogen system instead of installing an '

additional isolation valve on the instrument air system. The nitrogen backup system would be retained for post-LOCA service. The revision to the original commitment would necessitate a delay in the implementation of the modifications necessary to show compliance with Generic Letter 84-09. The original commitment was to install the additional isolation valves during the Unit 1 Reload 6 and Unit 2 Reload 7 outages scheduled to begin in October 1988 and January 1988, respectively. In the November 20, 1987 letter, CP&L requested that approval be granted to delay the installation of the full-time 8712220224 871217 DR ADOCK0500g4 j

nitrogen system on Unit 2 until the Reload 8 outage scheduled to begin in '

September 1989. The installation of the full-time nitrogen system could not proceed during the Reload 7 outage due to the length of time required for design of the system and procurement of the associated hardware. .In the  !

November 20, 1987 letter, CP&L also noted that compliance with Generic Letter '

84-09 would be demonstrated two months after the end of the outage in which the plant modifications are made. The two month post-outage period is needed for final system testing and evaluation of the nitrogen system in drywell inerting activities.-

l We have reviewed CP&L's request to change the commitment and schedule for achieving compliance with Generic Letter 84-09. We find these changes to be l acceptable. However, we request that the design ~ for the full-time nitrogen pressurization system be provided for our review no later than eight months prior to the start of the Unit 1 Reload 6 outage.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P.L.96-511.

Ernest D. Sylvester, Project Manager I Project Directorate 11-1 Division of Reactor Projects I/II l

LA:P  : R PM:PD21:DRPR D :DRPR PAnde66n ESylvester/aly EAde som 12//l,/87 12/p/87 12/ /87 i

O Mr. E. E. Utley Brunswick Steam Electric Plant Carolina Power & Light Company Units 1 and 2 cc:

Mr. P. W. Howe Mr. C. R. Dietz Vice President Plant General Manager Brunswick Nuclear Project Brunswick Nuclear Project Box 10429 Box 10429 l Southport, North Carolina 28461 Southport, North Carolina 28461 Mr. R. E. Jones, General Counsel Mr. H. A. Cole .

Carolina Power & Light Company Special Deputy Attorney General P. O. Box 1551 State of North Carolina 1 Raleigh, North Carolina 27602 Post Office Box 629 Raleigh, North Carolina 27602 E Mr. Mark S. Calvert i Associate General Counsel Mr. Robert P. Gruber .

I Carolina Power & Light Company Executive Director

Post Office Box 1551 Public Staff - NCUC

! Raleigh, North Carolina 27602 Post Office Box 29520 g Raleigh, North Carolina 27626-0520 i Mr. Christopher Chappell, Chairman Board of Connissioners Post Office Box 249 Bolivia, North Carolina 28422 Mrs. Chrys Baggett State Clearinghouse .

Budget and Management I

) 116 West Jones Street i Raleigh, North Carolina 27603 I Resident Inspector O. S. Nuclear Regulatory Commission Star Route 1 Post Office Box 208

, Southport, North Carolina 28461 Regional Administrator, Region II U. S. Nuclear Regulatory Commission a ta, or a b3 l

Mr. Dayne H. Brown, Chief l Radiation Protection Branch l Division of Facility Services N. C. Department of Human Resources 701 Barbour Drive Raleigh, North Carolina 27603-2008 1

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