ML20235Z331

Forwards Safety Evaluation Supporting Util 871204 Submittal of Design Mod That Allows Testing at Power W/O Preventing Alternate Rod Injection Sys from Responding to Automatic Initiation Signal

ML20235Z331
Person / Time
Site:	Brunswick
Issue date:	03/08/1989
From:	Le N Office of Nuclear Reactor Regulation
To:	Utley E CAROLINA POWER & LIGHT CO.
Shared Package
ML20235Z334	List: ML20235Z331 ML20235Z345
References
TAC-59075, TAC-59076, NUDOCS 8903150345
Download: ML20235Z331 (2)

Text

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March 8, 1989 h' .

Docket Nos. 50-325/324~

DISTRIBUTION DocketJ11eW PD21 r/f-

1. . NRC PDR" % -

Mr. E. E. Utley.

Local PDR Senior Executive Vice President Glainas (14E4)

Power Supply and Engineering & Construction EAdesnam Carolina Power & Light Company EReeves Post Office Box 1551 .PAnderson Raleight North Carolina 27602 NLederson LSpesaard (MNBB 3701)

Dear Mr. Utley:

SNewberry (7E12)

ACRS (10)

SUBJECT:

COMPLIANCE WITH ATWS RULE 10 CFR 50.62 RELATING TO ALTERNATE R00 INJECTION 'AND RECIRCULATING PUMP TRIP - BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 (TAC NOS.-59075 AND 59076)

'On September 18, 1987, the NRC issued a Safety Evaluation (SE) for the Brunswick Steam Electric Plant, Units 1 and 2, concerning compliance-with the ATWS Rule, 10 CFR 50.62. In that SE, the NRR staff concluded that the testability features of the alternate rod injection (ARI) system while at power were not acceptable.- The NRC: staff stated that Carolina Power & Light Company.should modify. the testability portion of'that ARI design, so that surveillance testing.while at power would not prevent the ARI system from responding to an automatic ARI initiation signal.

The staff also concluded that the Recirculating Pump Trip (RPT) design was not acceptable, because the Brunswick RPT design did not appear to be as reliable-as' the two approved designs (Monticello and modified Hatch designs.) This.

conclusion is' discussed in more detail in the staff's generic SE which accepted the GE owner's group proposed ATWS ARI and RPT' designs.

In a letter. dated December 4, 1987, you provided a design modification that allows testing at power without preventing the ARI system from responding to an automatic initiation signal and, as a result, our first concern is resolved. We .have reviewed the information and find the modification design

. acceptable. -In addition, by letter dated November 13, 1987, you presented information pertinent to the reliability of the Brunswick RPT design. The NRC staff has completed its review of this information and has concluded that Brunswick ~RPT design is of similar reliability as the Monticello RPT design.

-Therefore, we now find the design of the RPT system to be acceptable. Our supplemental SE on this subject is enclosed.

Sincerely, Original signed by h3Ik@ 05000324 P

8903os m Ngoc B. Le, Project Manager PDC Project Directorate 11-1 Division of Reactor Projects I/II

Enclosure:

h Office of Nuclear Reactor Regulation Safety Evaluation / I cc: See next page j

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DR :LA PR 21:DRPR:D:  :  :  : : :

gm:PM: g_____:_f_D.'_____:

NAME :PA erson :NLejfw  : eeves  :  :  :  :

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! ,. .. 'Mr.*E. E. Utley .

Brunswick Steam Electric Plant (Carolina: Power .& Light Company Units I and 2

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CC;'

Mr. Russell,B.-Starkey, Jr. Mr. J. L. Harness Project Manager. _

Plant General Manager Brunswick. Nuclear Project Brunswick Steam Electric Plant Box 10429- P. 0. Box 10429 Southport, North Carolina 28461 Southport, North Carolina 28461 Mr.!R. E. Jones,-General Counsel Mr. H. A. Cole Carolina Power 8 Light Company Special Deputy Attorney. General.

State of North Carolina P.LO. Box 1551

<Raleigh, North Carolina'27602 ' Post Office Box 629 Raleigh, North Carolina 27602

" J Mr.' Mark lS._Calvert. .

~ Associate General Counsel. Mr. Robert P. Gruber1

~ Carolina Power & Light Company Executive' Director Post Office Box 1551- .

Public. Staff - NCUC Raleigh, North Carolina _ 27602 Post Office Box'29520 Raleigh, North Carolina 27626 0520 Ms. Grace Beasley .

g Board of Commissioners Post Office Box 249

~

Bolivia, North Carolina 28422

.Mrs. Chrys Baggett.-

-State Clearinghouse Budget and Management 116 West' Jones Street Raleigh,-North Carolina 27603 Resident Inspector

-U. S. Nuclear Regulatory Commission

' Star Route 1.

Post Office Box 208 Southport, North Carolina 28461 L Regional Administrator, Region II h U. S.: Nuclear Regulatory Commission 101 Marietta Street, Suite 2900 Atlanta, Georgia 30323 Mr..Dayne H. Brown, Chief-Radiation Protection Branch

' Division of Facility Services

.N. C. Department.of Human Resources 701 Barbour Drive Raleigh', . North Carolina 27603-2008 1

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