ML20205Q828

Application for Amends to Licenses DPR-71 & DPR-62, Incorporating Operability Requirements of Nitrogen Backup Sys Into Tech Spec 3.6.4.2 Re Suppression Pool reactor-bldg Vacuum Breakers Per Generic Ltr 84-09.Fee Paid

ML20205Q828
Person / Time
Site:	Brunswick
Issue date:	03/27/1987
From:	Cutter A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20205Q832	List: ML20205Q828 ML20205Q849
References
GL-84-09, GL-84-9, NLS-87-070, NLS-87-70, NUDOCS 8704060074
Download: ML20205Q828 (2)

Text

\\

CSSR, carenne power a u he company s

P. O. Box 1551

• Ralegh N. C. 27602 (919) 836 4231 MAR 2 71987 SERIAL: NLS-87-070 87TSB05 A. s. cunER 10CFR50.99 Vice Pres &nt Nuclear Er$neerrq & ucensing United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 5

BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.1 AND 2 DOCKET NOS. 50-325 & 50-324/ LICENSE NOS. DPR-71 & DPR-62 REQUEST FOR LICENSE AMENDMENT NITROGEN BACKUP SYSTEM Gentlemen:

SUMMARY

In accordance with the Code of Federal Regulations, Title 10, Parts 50.90 and 2.10l, Carolina Power & Light Company (CP&L) hereby requests a revision to the Technical Specifications (TS) for the Brunswick Steam Electric Plant, Unit Nos. I and 2. The proposed changes incorporate requirements for nitrogen backup system operability as requested by the NRC to comply with the guidance of Generic Letter 84-09 which calls for removal of potential oxygen sources from primary containment. The operability requirements of the nitrogen backup system have been incorporated into TS Section 3.6.4.2, Suppression Pool Reactor-Building Vacuum Breakers. A revision to basis page B 3/4 6-5 is also included for your information.

DISCUSSION On March 18,1987, a meeting was held with the NRC staf f to discuss incorporation of the nitrogen backup system into the TS. Previously, the NRC had requested that this system be included in the TS for compliance with the requirements of 10CFR50.44(cX3Xii). At the meeting, CP&L suggested that the operability requirements of the nitrogen backup system be incorporated into TS 3.6.4.2, Suppression Pool-Reactor Building Vacuum Breakers. This location was chosen as an appropriate administrative location for incorporating the requested additions to the Technical Specifications. The enclosed changes reflect information discussed and agreed upon at that meeting.

Carolina Power & Light Company also provided information at this meeting to clarify its system description which was provided on December 19,1986. In response to Action I, contained in the October 30,1986 Safety Evaluation Report (SER), CP&L described the system currently installed at BSEP. During the next refueling outage on each unit, another normally open, fail-closed, direct-acting solenoid valve will be installed on each

)

instrument air header penetrating the primary containment. These valves willisolate on receipt of a Low-Level 3 or high drywell pressure signal, thereby satisfying Action 1.

gI 8704060074 870327 PDR ADOCK 05000324 i

i P

PDR

\\

N s

< WW$

1 ocum:nt Control Desk MAR 2 71987 NLS-87-070 / Page 2 These changes will complete actions required to provide compliance with 10CFR50.44.

SIGNIFICANT liAZARDS ANALYSIS The Commission has provided standards in 10CFR50.92(c) for determining whether a significant hazards consideration exists. A proposed amendment to an operating license for a facility involves no significant hazards consideration if operation of the facility in accordance with the proposed amendment would not: (1) involve a significant increase in the probability or consequences of an accident previously evaluated,(2) create the or (3) involve a significant reduction in a margin of safety. Carolina Power &y evaluate possibility of a new or dif ferent kind of accident from any accident previousl Light Company has reviewed this request and determined that:

1.

The proposed amendment does not involve a significant increase in the probability or consequences of an accident previously evaFuated. These changes reflect additional restrictions on plant operation. The changes will ef fectively assure operability of the essential nitrogen supply system in the event of a loss of coolant accident (LOCA), thereby reducing the potential for oxygen to enter the drywell should a postulated LOCA occur concurrent with a rupture of the instrument air line.

2.

The pr,oposed amendment does not create the possibility of a new or dif ferent kind of accident from any accident previously evaluated. The surveillance requirements assure a post-accident supply of oxygen-free working fluid for the required pneumatically operated systems inside the primary containment.

3.

The proposed amendment does not involve a significant reduction in the margin of safety. The proposed revisions incorporate additional, more restrictive requirements to ensure that oxygen does not get into the containment due to a rupture of are instrument air line concurrent with a loss of coolant accident.

ADMINISTRATIVE INFORMATION The revised BSEP Technical Specification pages are provided in Enclosures I and 2. The Company has evaluated this request in accordance with the provisions of 10CFR170.12 and determined that a license amendment application fee is required. A check for $150 is enclosed in payment of this fee.

Please refer any questions regarding this submittal to Mr. Sherwood R. Zimmerman at (919) 836-6242.

Yprs very tf ly, 4

A. B. Cutter ABC/RWS/baw (5164RWS)

Enclosures cc:

Dr. J. Nelson Grace (NRC-Ril)

Mr. W.11. Ruland (NRC-BNP)

Mr. E. Sylvester (NRC)

Mr. Dayne 11. Brown A. B. Cutter, having been first duly sworn, did depose and say that the information contained herein is true and correct to the best of his information, knowledge and belief

• and the sources of his information are of ficers, employees, contractors, and agents Carolina Power & Light Company.

j;,,QO ta'y NOT W My commission expires: // oM/cf2 r

i L

i 3

\\d.k PUBLIC f

Ut.4.a 'e#

o

.