ML20195E115
| ML20195E115 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 11/02/1988 |
| From: | Richey R CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20195E120 | List: |
| References | |
| 87TSB25, NLS-88-173, NUDOCS 8811070243 | |
| Download: ML20195E115 (7) | |
Text
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e CNLL Carolina Power & Light C9mpai'y Nov 2 Ug8 SERIAL: NLS 88-173 87TSB25 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 BRUNSWICK STEAM ELECTRIC PIANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50 325 6 50 324/ LICENSE NOS. DPR 71 6 DPR-62 REQUEST FOR BASES CHANCE DRWELL DE-INERTING Gentlemen:
Carolina Power 6 Light Company (CP6L) hereby requests a revision to the Bases of the Technical Specificacions for the Brunswick Steam Electric Plant (BSEP), Units 1 and 2.
The proposed change adds a statement to the Bases for Technical Specification 3.6.6.3 to clarify the intent of this Technical Specification requirement.
, provides a detailed description of the proposed change a-d the basis for the chango. provides instructions for incorporation of the proposed change into the Technical Specifications for each unit. provides a summary of the proposed Technical Specification change for each unit on a page by page basis.
Enclosures 4 and 5 provide the proposed Technical Specification Bases pager for each unit.
i In a:cordance with the requirements of 10CFR170.d, a >: heck for $150 is also enclosed.
As discussed in Inspection Report Nis. 50 325/87 36 and 50 524/87 37 dated November 24, 1987, Carolina Poeer & Light Company has received NRC concurrence with the position reflectea in d.e Bases clarification provided herein. However, until the Brunswick Technical Specific.ations have been revised to incorporate this clarification, the NRC is tracking i
this issue as an Inspector Follow up Item (
Reference:
325/87-36 04 and 324/87 37 04). Therefore, to support closure of this Inspector Follovup Item, Carolina Power & Light Company requests that the NRC review and approve this Bases change by May 1, 1989.
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,e Document C:ntrol Deck NLS 88-173 / Page 2 Please refer any questions regarding this submittal to Mr. Stephen D.
Floyd at (919) 836-6901.
Yours very truly, J
l f/L R. B. Richey Manager "uclear Services Department BAB/ PDM (\\cor\\S7tsb25)
Enclosures:
1.
Basis for Change Request 2.
Instructions for Incorporation 3.
Summary List of Revisions 4
Unit 1 Technical Specification Bases Page 5.
Unit 2 Technical Specification Eases Page ec:
Mr. Dayne H. Brown Mr. M. L. Ernst Mr. W. H. Ruland Mr. B. C. Buckley 4
1 i
(
ENCLOSURE 1 BRUNSWICK STEAM ELECTRIC PIANT, UNITS 1 AND 2 NRC DOCKETS 50 325 6 50-324 OPERATING LICEMSES DPR-716 DPR 62 REQUEST TOR BASES CHANGE DRYWELL DE-INERTINGT BASIS FOR CHANGE REOUEST Proposed Chance Add a statement to the Bases section for Technical Specification 3.6.6.3.
Basis The proposed change adds a statement to the Bases to clarify the intent of Technical Specification 3.6.6.3.
Technical Specification 3.6.6.3 provides the controls to ensure that the primary containment atmosphere oxygen concentration is maintained less that 4 percent by volume during normal operation.
The oxygen concentration in primary containment may exceed the 4 percent oxygen concentration limit during the following conditions:
(1)
During pover ascension, until 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after 15 percent RATED THERMAL POWER is reached.
(2)
Durin5 power descension, 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to reaching 15 percent RATED THERMAL POWER, and (3)
For maintenance.ctivities requiring power decreares with entry into the dryvels: Within 74 hours8.564815e-4 days <br />0.0206 hours <br />1.223545e-4 weeks <br />2.8157e-5 months <br /> after oxygen concentration exceeds 4 percent by volume, these activities should be completed and the dryvell re inerted to an oxygen concentration less than 4 percent by volume or the un).t should have been reduced to less than 15 percent RATED THERMAL POWER.
The intent of the Technical Specification 3.6.6.3 time limits is to l
allow primary containment entrics at low power levels, in addition to entries during normal unit start ups and shutdowns, for inspection and i
maintenance activiti6s.
In any case, the containment atmosphere oxygen l
concentration must be less the 4 percent (by volume) within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> r
after tt'e 4 percent oxygen concentration limit is exceeded unless l
thermal power is less than 13 percent RATED THERMAL POWER. Otherwise, the ACTION statement associated with Technical Specification 3.6.6.3 will be followed. This clarification is consistent with the BVR 4 Standard Technical Specification 3.6.6.4 ACTION statement, which allows l
operation for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with the primary containment de inerted without I
being required to shut the unit down.
l l
El 4 r
As discussed in Inspection Report Nos. 50-325/87-36 and 50 324/87 37 dated November 24, 1987, the NRC has agreed with the clarification of the drywell oxygen con centration requirements stated above.
- However, until such time as the Brunswick Technical Specifications have been revised in incorporate this clarification, the NRC is tracking this issue as an Inspectot Follow up Item (
Reference:
325/87 36 04 and 324/87 37 04).
10CFR50.92 Evaluation Consistent with the provisions of 10CFR50.36(a), the Bases are not considered part of the actual Technic 61 Specifications because they are only summary statements of the bases or reasons for the specification.
Therefore, a 10CFR50.92 significant hazards evaluation is not provided for this thsnge since the requested Bases clarifier,cion is only an enhancement of the summary statements in support >f the Technical Specifications.
4 El 5
ENCLOSURE 2 BRUNSWICX STEAM ELECTRIC PIANT, UNITS 1 AND 2 NRC DOCKETS 50-325 6 50 324 OPERATING LICENSES DPP. 71 6 DPR 62 REQUEST FOR BASES CHANCE DRWELL DE. INERTING INSTRUCTIONS FOR INCORPORATION The proposed changes to the Technical Specifications (Appendix A to Operating Licenses DPR 71 and DPR 62) woul.d be incosporated as follows:
UNIT 1 Pemove Pace Insert Pare B 3/4 6 Sa B 3/4 6 6 8 3/4 6 6 UNIT 2 Remove Pace Inrert Par.e B 3/4 6 Sa B 3/4 6 6 3 3/4 6 6 9
E2 1 i
ENCLOSURE 3 BRUNSWICK STEAM ELECTRIC PIM4T, UNITS 1 AND 2 NRC DOCKETS 50 325 & $0 324 OPERATING LICENSES DPR 71 & DPR-62 REQUEST FOR BASES CHANCE DRWELL DE INERTING
SUMMARY
LIST OF REVIS10H1 UNIT 1 EAlig Descriot.8on of Chanres B 3/4 6 Sa Repagination only.
B 3/4 6 6 Add a statement to the Bases to clarify the intent of Technical Spe,cification 3.6.6.3, UNIT 2 Pages Descrintion of Chances B 3/4 6 5a Repagination only.
B 3/4 6+6 Add a statement to the Bases to clarify the intent of Technical Specification 3.6.6.3.
l E3-1
t ENCIASURE 4 BRUNSWICV, STEMi ELECTRIC PIANT, UNITS 1 AND 2 NRC DOCKETS 50-325 6 50 324 OPERATING LICENSES DPR-71 & DPR 62 REQUEST FOR BASES CHANGE DRWELL DE.INERTING IPJIT 1 TECHNICAL SPECIFICATION PAGES AAAM