HNP-94-006, Application for Amend to License NPF-63,revising TS 3.6.5, Containment Sys - Vacuum Relief Sys to Require That in Modes 1-4 W/One Vacuum Relief Sys Inoperable,Sys Be Restored to Operable Status within 72 H,Per NUREG-1431
| ML18011A297 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 02/04/1994 |
| From: | Robinson W CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML18011A298 | List: |
| References | |
| RTR-NUREG-1431 HNP-94-006, HNP-94-6, NUDOCS 9402150138 | |
| Download: ML18011A297 (12) | |
Text
ACCELERATED DIS UTION DEMONSTPATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9402150138 DOC.DATE: 94/02/04 NOTARIZED: YES FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina AUTH.NAME AUTHOR AFFILIATION ROBINSON,W.R.
Carolina Power 6 Light Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
DOCKET 05000400 R
SUBJECT:
Application for amend to license NPF-63,revising "Containment Sys Vacuum Relief Sys" to require Modes 1-4 w/one vacuum relief sys inoperable,sys to operable status within 72 h,per NUREG-1431.
DISTRIBUTION CODE:
A001D COPIES RECEIVED:LTR ENCL TITLE: OR Submittal:
General Distribution NOTES:Application for permit renewal filed.
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Carolina Power & Light Company PO Box 165 New Hill NC 27562 William R. Robinson Vice President Harris Nuclear Plant f5+ 4 $94 Letter Number: HO-940239 SERIAL: HNP-94-006 10 CFR 50.90 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT CONTAINMENTVACUUMRELIEF SYSTEM Gentlemen:
In accordance with the Code of Federal Regulations, Title 10, Parts 50.90 and 2.101, Carolina Power & Light Company (CP&L) hereby requests a revision to the Technical Specifications (TS) for the Shearon Harris Nuclear Power Plant (SHNPP).
The proposed amendment revises the Action Statement associated with Technical Specification 3.6.5, Containment Systems
- Vacuum Relief System.
Currently, the Specification requires an inoperable containment vacuum relief system (CVRS) to be restored to an operable status within four hours. Consistent with NUREG-1431 (the new Standard Technical Specifications), the proposed amendment requires that the inoperable CVRS be restored to an operable status withinseventy-two hours. The proposed time period is consistent with other Limiting Conditions For Operation for the loss of one train of a system that is required to mitigate the consequences of a loss of coolant accident or other design basis accident.
Enclosure 1 provides a detailed description of the proposed changes and the basis for the changes.
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, O'G. details, in accordance with 10 CFR 50.91(a), the basis for the Company's determination that the proposed changes do not involve a significant hazards consideration.
)OI 1( provides an environmental evaluation which demonstrates that the proposed amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Therefore, pursuant to 10 CFR 51.22(b), no environmental assessment needs to be prepared in connection with the issuance of the amendment.
".'ii000:P State Road113d NewHill NC Tel 919362-2502 Fax 919362-6950
,Document Control Des HNP-94-006 / Page 2 provides page change instructions for incorporating the proposed revision. provides the proposed Technical Specification pages.
In accordance with 10 CFR 50.91(b), CP&L is providing the State of North Carolina with a copy of the proposed license amendment.
In order to allow time for procedure revision and orderly incorporation into copies of the Technical Specifications, CP&Lrequests that the proposed amendment, once approved by the NRC, be issued such that implementation willoccur within sixty days of issuance of the amendment.
Please refer any questions regarding this submittal to Mr. D. C. McCarthy at (919) 362-2100.
Yours very truly, W. R. Robinson MGW
Enclosures:
- 1. Basis for Change Request 2.
10 CFR 50.92 Evaluation
- 3. Environmental Considerations 4.
Page Change Instructions
- 5. Technical Specification Pages W. R. Robinson, 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 officers, employees, contractors, and agents of Carolina Power & Light Company.
My commission expires: P-Q-g+
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Mr. Dayne H. Brown Mr. S. D. Ebneter Mr. N. B. Le Mr. J. E. Tedrow PL'BliC
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ENCLOSURE SERIAL:
HNP-94-006 ENCLOSURE 1 SHEARON HARRIS NUCLEAR POWER PLANT NRC DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT CONTAINMENT VACUUM RELIEF SYSTEM BASIS FOR CHANGE RE UEST
~Back round The Containment Vacuum Relief System (CVRS) is designed to assure the structural integrity of the Reactor Containment Building in the event of an inadvertent actuation of the containment spray system.
The CVRS consists of two independent vacuum relief lines, each sized to protect the containment structure against excessive negative pressure differential.
Technical Specification 3.6.5, Containment Systems
- Vacuum Relief System, specifies in the Action Statement that in Modes 1-4 with one vacuum relief system inoperable, the system be restored to OPERABLE status within four hours or be in at least HOT STANDBY within the next six hours. This is based on the guidance provided in NUREG-0452, Standard Technical Specifications For Westinghouse Pressurized Water Reactors, Draft Revision 5 from which the Shearon Harris Nuclear Power Plant Technical Specifications were modeled.
Pro osed Chan e
The proposed amendment revises the Action Statement associated with Technical Specification 3.6.5 to require that in Modes 1-4 with one vacuum relief system inoperable, the system be restored to OPERABLE status within seventy-two hours or be in at least HOT STANDBY within the next six hours.
Basis Changing the Action Statement from four hours to seventy-two hours is consistent with the guidance contained in NUREG-1431, Standard Technical Specifications, Westinghouse Plants,
- Bases, Volume 3 (LCO 3.6.12, Vacuum Relief Valves). The CVRS is not an ESF system nor does it provide protection features for any accident analyzed in Chapter 15 of the FSAR. The revised Standard Technical Specifications allow for a seventy-two hour restoration period for an inoperable train of two-trained ESF systems.
This amendment proposes to apply this level of control on this non-ESF equipment.
Conclusions The application of the seventy-two hour completion time to the CVRS is conservative, since the time period is consistent with that specified for two-trained ESF systems which mitigate FSAR Chapter 15 accidents.
The Shearon Harris Nuclear Power Plant CVRS is designed to assure the structural integrity of the containment building in the event of an inadvertent actuation of the containment spray system which is not an FSAR Chapter 15 accident. Therefore, the proposed seventy-two hour completion time for the CVRS is conservative on this comparative basis.
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ENCLOSURE SERIAL:
HNP-94-006 ENCLOSURE 2
SHEARON HARRIS NUCLEAR POWER PLANT NRC DOCKET NO. 50-400/LICENSE NO.. NPF-63 REQUEST FOR LICENSE AMENDMENT CONTAINMENT VACUUM RELIEF SYSTEM 10 CFR 50.92 EVALUATION The Commission has provided standards in 10 CFR 50.92(c) for determining whether a significant hazards consideration exists.
A proposed amendment to an operating license for a facility involves no significant hazards consideration ifoperation 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 possibility of a-new or different kind of accident from any accident previously evaluated, or (3) involve a significant reduction in a margin of safety.
Carolina Power
& Light Company has reviewed this proposed license amendment request and determined that its adoption would not involve a
significant hazards determination.
The bases for this determination are as follows:
Pro osed Chan e
The proposed amendment revises the Action Statement associated with Technical Specification 3.6.5, Containment Systems
- Vacuum Relief System. Currently, the Specification requires an inoperable containment vacuum relief system (CVRS) to be restored to an operable status within four hours or be in at least HOT STANDBY (Mode 3) within the next six hours.
The proposed amendment requires that the inoperable CVRS be restored to an operable status within seventy-two hours or be in at least HOT STANDBY within the next six hours.
The proposed time period is consistent with other Limiting Conditions For Operation for the loss of one train of a.system that is required to mitigate the consequences of a loss of coolant accident or other design basis accident; although the CVRS is not required to mitigate a loss of coolant or other design basis accident.
Basis This change does not involve a significant hazards consideration for the following reasons:
The proposed amendment does not involve a significant increase in the probability or consequences of an accident previously evaluated.
The proposed amendment does not physically alter the plant in any manner.
The proposed amendment does not introduce any new equipment nor does it require any existing equipment or systems to perform a different type of function than they are currently designed to perform.
The proposed amendment to Technical Specification 3.6.5 allows additional time to restore an inoperable containment vacuum relief system to operable status.
Changing the completion time to seventy-two hours remains quite conservative for this non-ESF syst: em since a seventy-two hour restoration time is specified for two-train ESF systems which mitigate Final Safety Analysis Report (FSAR)
Chapter 15 accidents.
The CVRS is designed to protect the structural integrity of containment during an inadvertent actuation of the containment spray system, which is not an FSAR Chapter 15 Page E2-1
ENCLOSURE SERIAL:
HNP-94-006 accident.
Therefore, there would be no increase in the probability or consequences of an accident previously evaluated.
The proposed amendment does not create the possibility of a
new or different kind of accident from any accident previously evaluated.
The proposed amendment does not introduce any new equipment nor does it require any existing equipment or systems to perform a different type of function than they are currently designed to perform.
Therefore, the proposed changes do not create the possibility of a new or different kind of accident from any accident previously evaluated.
The proposed amendment does not involve a significant reduction in the margin of safety.
The proposed amendment to Technical Specification 3.6.5 allows additional time to restore an inoperable containment vacuum relief system to operable status.
Changing the completion time to seventy-two hours remains conservative since a seventy-two hour restoration time is specified for two-train ESF systems which mitigate FSAR Chapter 15 accidents.
The CVRS is designed to protect the structural integrity of containment during an inadvertent actuation of the containment spray
- system, which is not an FSAR Chapter 15 accident.
Therefore, the proposed changes do not involve a significant reduction in a margin of safety as defined in the Technical Specifications or FSAR.
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ENCLOSURE SERIAL:
HNP-94-006 ENCLOSURE 3
SHEARON HARRIS NUCLEAR POWER PLANT NRC DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT CONTAINMENT VACUUM RELIEF SYSTEM ENVIRONMENTAL CONSIDERATIONS 10 CFR 51.22(c)(9) provides criterion for and identification of licensing and regulatory actions eligible for categorical exclusion from performing an environmental assessment.
A proposed amendment to an operating license for a facility requires no environmental assessment if operation of the facility in accordance with the proposed amendment would not:
(1) involve a significant hazards consideration; (2) result in a significant change in the types or significant increase in the amounts of any effluents that may be released offsite; (3) result in an increase in individual or cumulative occupational radiation exposure.
Carolina Power 6 Light Company has reviewed this request and determined that the proposed amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b),
no environmental impact statement or environmental assessment needs to be prepared in connection with the issuance of the amendment.
The basis for this determination follows:
Pro osed Chan e
The proposed amendment revises the Action Statement associated with Technical Specification 3.6.5, Containment Systems
- Vacuum Relief System. Currently, the Specification requires an inoperable containment vacuum relief system (CVRS) to be restored to an operable status within four hours or be in at least HOT STANDBY (Mode 3) within the next six hours.
The proposed amendment requires that the inoperable CVRS be restored to an operable status within seventy-two hours or be in at least HOT STANDBY within the next six hours.
The proposed time period is consistent with other Limiting Conditions For Operation for the loss of one train of a system that is required to mitigate the consequences of a loss of coolant accident or other design basis accident; although the CVRS is not required to mitigate a loss of coolant accident or other design basis accident.
Basis The change meets the eligibilitycriteria for categorical exclusion set forth in 10 CFR 51.22(c)(9) for the following reasons:
As demonstrated in Enclosure 2, the proposed amendment does not involve a significant hazards consideration.
The proposed amendment does not result in a significant change in the types or significant increase in the amounts of any effluen'ts that may be released offsite.
The proposed amendment allows additional time to restore an inoperable containment vacuum relief system to operable status.
The proposed amendment does not introduce any new equipment nor does it require any existing equipment or systems to perform a different type of function than Page E3-1
ENCLOSURE SERIAL:
HNP-94-006 they are currently designed to perform. As such, the change can not affect the types or amounts of any effluents that may be released offsite.
The proposed amendment does not result in an increase in individual or cumulative occupational radiation exposure.
The proposed amendment allows additional time to restore an containment vacuum relief system to operable status.
No surveillances or testing result from the proposed amendment.
the amendment has no affect on either "individual or occupational radiation exposure..
inoperable additional Therefore, cumulative Page E3-2
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ENCLOSURE SERIAL:
HNP-94-006 ENCLOSURE 4 SHEARON HARRIS NUCLEAR POWER PLANT NRC DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT CONTAINMENT VACUUM RELIEF SYSTEM PAGE CHANGE INSTRUCTIONS Removed Pa e
Inserted Pa e
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