ML20077G009
| ML20077G009 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/12/1991 |
| From: | Matthews D Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20077G012 | List: |
| References | |
| NUDOCS 9106210192 | |
| Download: ML20077G009 (9) | |
Text
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UNITED STATES F z) eV i
NUCLEAR REGULATORY COMMISSION U
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WASHINGTON, O C,20555 June 12, 1991 Docket Nos.
50-369 ar.d 50-370 Mr. M.S. Tuckman Vice President -
Nuclear Operations Duke Power Company P.O. Box 1007 Charlotte, North Carolina 28201-1007
Dear Mr. Tuckman:
SUBJECT:
ISSUANCE OF AMENDMENT N0, 120 TO FACILITY OPERATING LICENSE NPF-9 AND AMENDMENT NO. 102 TO FACILITY OPERATING LICENSE NPF MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 (TACS 76998/76999)
The Nuclear Regulatory Comission has issued the enclosed Amendment No.120 to Faci'.ity Operating License NPF-9 and Amendment No.
102 to Facility Operating Lictnse NPF-17 for the McGuire Nuclear Station, Units 1 and 2.
These amend-merts consist of changes to the Technical Specifications (TSs) in response to yo;r application dated June 7,1990, as supplemented October 4,1990, and April 30, 1991.
The amendments revise TS 3/4.6.5.1, " Ice Condenser Containment Systems," to reduce the ice weight required to be maintained in the ice condenser ice baskets. Specifically, the total minimum ice weight is reduced from 2,466,420 pounds to 2,099,790 pounds, and the minimum weight for each basket is reduced from 1269 pounds tc,1081 pound!.
A copy of the related Safety Evaluation is also enclosed.
Notice of issuance of the amendmeats will be included in the Commission's biweekly Federal Register
- notice, cer ly,
/
Timothy. Reed, Project Manager Project Directorate II-3 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation
Enclosures:
1.
Amendment No.120 to NPF-9 2.
Amendment No.102 to NPF-17 3.
Safety Evaluation cc w/ enclosures:
See next page i
i 9106210192 910612 PDR ADOCK 05000369 P
PDR l
f Mr. M.S. Tuckman Duke Power Company McGuire Nuclear Station cc:
Mr. A.V. Carr, Esq.
Dr. John M. Barry Duke Power Company Department of Environmental Health 422 South Church Street Mecklenburg County Charlotte, North Carolina 28242-0001 1200 Blythe Boulevard Charlotte, North Carolina 28203 County Manager of Mecklenburg County 720 East fourth Street fir. Dayne H. Brown, Director Charlotte, North Carolina 28202 Department of Environmental, Health and Natural Resources Mr. Paul Guill Division of Radiation Protection Duke Power Company P.O. Box 27687 Nuclear Production Department Raleigh, North Carolina 27611-7687 P.O. Box 1007 Charlotte, North Carolina 28201-1007 Mr. Alan R. Herdt, Chief Project Branch #3 U.S. Nuclear Regulatory Commission J. Michael McGarry, III, Esq.
101 Marietta Street, NW, Suite 2900 Winston and Strawn Atlanta, Georgia 30323 1400 L Street, N.W.
Washington, DC 20005 Ms. Karen E. Long Assistant Attorney General N. C. Department of Justice Senior Resident inspector P.O. Box 629 c/o U.S. Nuclear Regulatory Commission Raleigh, North Carolina 27602 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Mr. R.L. Gill, Jr.
Nuclear Production Department Regional Administrator, Region II Duke Pcwer Company U.S. Nuclear Regulatory Commission P.O. Box 1007 101 Marietta Street, N.W., Suite 2900 Charlotte, North Carolina 28201-1007
' Atlanta, Georgia 30323 Mr. Frank Modrak Project Manager, Mid-South Area ESSD Projects Westinghouse Electric Corporation MNC West Tower - Bay 241 P. O. Box 355 Pittsburgh, Pennsylvania 15230
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NUCLEAR REGULATORY COMMISSION WASHINGTON. O C. 20066 s, m DUKE POWER COMPANY 00CKET NO. 50-369 McGUIRE NUCLEAR STATION, UNIT 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.
120-License No. NPF-9
'I.
The Nuclear Regulatory Comission (the Comission) has found that:
A.
The application for amendment f.c the McGuire Nuclear Station, Unit 1 (the facility) Facility Operating License No NPF-9 filed by the Duke Power Company (the licensee) dated June 7,1990, as supplemented October 4, 1990, and April 30, 1991, complies with the-standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations as set forth in 10 CFR Chapter I; B.
lne facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Comission; C.
.There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted
.in compliance with the Comission's regulations set forth in 10 CFR Chapter I; D.
The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.
The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements-have
.been satisfied.
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Q 2.
Accordingly, the license is hereby amended by page changes to the Technical Specifications as indicated in the attachment to this license amendment, and Paragraph 2.C.(2) of Facility Operating License No. NPF-9 is hereby amended to read as follr*< '
Technical Soecifications The Technical Specifications contained in Appendix A, as revised through Amendment No.120, are hereby incorpora ed into the license.
The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.
3.
This license amendment is effective as of its date of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION b,', i IbQ< ~L b'i d e
s David B. Matthews, Director Project Directorate II-3 Division of Reactor Projects-l/II Office of Nuclear Reactor Regulation e
Attachment:
Technical Specification Changes Date of Isscance:
June 12, 1991 i
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UMTED STATES
<Jl e,t i NUCLEAR REGULATORY COMMISSION 5
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DUKE POWER COMPANY DOCKET N0. 50-370 McGUIRE NUCLEAR STATION, UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.102 License No. NPF-17 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendment to the McGuire Nuclear Station, Unit 2 (the facility) Facility Operating License No. NPF-17 filed by the Duke Power Company (the licensee) dated June 7, 1990, as supplemented October 4,1990, and April 30, 1991, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations as set forth in 10 CFR Chapter I; B.
The facility will ooerate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.
There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will Le conducted in compliance with the Commission's regulations set forth in 10 CFR Chapter I; D.
The issuance of this amendment will not be inimical to the common defense and secuiity or to the health and safety of the public; and C.
The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements have been satisfied.
2 2.
Accordingly, the license is hereby amended by page changes to the Technical Specifications as indicated in the attachment to this license amendment, and Paragraph 2.C.(2) of Facility Operating License No. NPF-17 is hereby amended to read as follows:
Technical Specifications The Technical Specifications contained in Appendix A, as revised through Amendment No.102, are hereby incorporated into the license.
The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.
3.
This license amendment is effective as of its date of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION
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David B. Matthews, Director Project Directorate 11-3 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation
Attachment:
Technical Specification Changes Date of Issuance: June 12, 1991
ATTACHMENT TO LICENSE AMENDMENT NO.120 FACILITY OPERATING LICENSE NO. NPF-9 DOCKET NO. 50-369 A,,Np TO LICENSE AMENDMENT N0.102 FACILITY OPERATING LICENSE NO. NPF-17 00CKET NO. 50-370 Replace the following pages of the Appendix "t
' nical Specifications with the enclosed pages. The revised pages are identii,ed by Amendment number and contain vertical lines indicating the areas of change.
The correspondirg over-leaf page is also provided to maintain docurr.ent completeness.
Remove Pages Insert Pages 3/4 6-34 3/4 6-34 3/4 6-35 3/4 6-35 3/4 6-36 3/4 6-36*
B 3/4 6-5 B 3/4 6-5
- 0verleaf page
e CONTAINMENT SYSTEMS 3/4.6.5 ICE CONDENSER ICE BED LIMITING CONDITION FOR OPERATION 3.6.5.1 The ice bed shall be OPERABLE with:
The stored ice having a boron concentration of at least 1800 ppm a.
boron as sodium tetraborate and a pH of 9.0 to 9.5, b.
Flow channels through the ice condenser, i
A maximum ice bed temperature of less than or equal to 27'F, c.
d.
'A total ice weight of at least 2,099,790 pounds at a 95% level l
of confidence, and e.
1944 ice baskets, APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTION:
With the ice bed inoperable, restore the ice bed to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUT-l 00WN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIREMENTS 4.6.5.1 The ice condenser.shall be-determined OPERABLE:
a.
At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by using the Ice Bed Temperature Monitoring System to verify that the maximum ice bed temperature is less than or equal to 27'F,
-b.
At least once per 9 months by:
1)
Chemical. analyses which verify that at least nine representative samples of stored ice have a boron concentration of at least j -
1800 ppm as sodium tetraborate and a pH of 9.0 to 9.5 at-20'C l
.2)
Weighing a representative sample of at-least 144 ice baskets l-and: verifying that each basket contains at least 1081 lbs of l
ice.
The representative sample shall include 6 baskets from each of the 24 ice condenser bays and shall be constituted of Amendment Nc.120(Unit 1) l r-McGUIRE - UNITS 1 and 2 3/4 6-34 Amendment No.102(Unit 2)
^
1 l;
e CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
I basket each from Radial Rows 1, 2, 4, 6, 8, and 9 (or from the same row of an adjacent bay if a basket from a designated row cannot be obtained for weighing) within each bay.
If any basket is found to contain less than 1081 pounds of ice, a l
representative sample of 20 additional baskets from the same bay shall be weighed.
The minimum average weight of ice from the 20 additional baskets and the discrepant basket shall not be less than 1081 pounds / basket at a 95% level of confidence.
1 The ice condenser shall also be subdivided into 3 groups of baskets, as follows:
Group 1 - Bays 1 through 8. Group 2 -
Bays 9 through 16, and Group 3 - Bays 17 through 24.
The minimum average ice weight of the sample baskets from Radial Rows 1, 2, 4, 6, 8, and 9 in each group shall not be less than 1081 pounds / basket at a 95% level of confidence.
l The minimum total ice condenser ice weight at a 95% evel of confidence shall be calculated using all ice basket weights determined during this weighing program and shall not be less than 2,099,790 pounds; and l
3)
Verifying, by a visual inspection of at least two flow passages per ice condenser bay, that the accumulation of frost or ice on flow passages between ice baskets, past lattice frames, through the intermediate and top deck floor grating, or past the lower inlet plenum support structures and turning vanes is restricted to a thickness of less than or equal to 0.38 inch.
If one flow passage per bay is found to have an accumulation of frost or ice with a thickness of greater than or equal to 0.38 inch, a representative sample of 20 additional flow passages from the same bay shall be visually inspected.
If these additional flow passages are found acceptable, the surveillance program may proceed considering the tingle deficiency as unique and accept-able.
More than one restricted flow passage per bay is evidence of abnormal degradation of the ice condenser.
At least once per 40 months by lif ting and visually inspecting the c.
accessible portions of at least two ice baskets from each one-third of the ice condenser and verifying that the ice baskets are free of detrimental structural wear, cracks, corrosion, Or other damage.
The ice baskets shall be raised at least 12 feet for this inspection.
i f
Amendment No.120 (Unit 1)
McGUIRE - UNITS 1 and 2 3/4 6-35 Amendment No.102 (Unit 2) l t
c CONTAINMENT SYSTEMS I,
ICE BED TEMPERATURE MONITORING SYSTEM wi LIMITINC CONDITION FOR OPERATION 3.6.5.2 The Ice Bed Temperature Monitoring System shall be OPERABLE with at least two OPERABLE RTD channels in the ice bed at each of three basic elevations (10'6". 30'9" and 55' above the flocr of the ice condenser) for each one-third of the ice condenser.
APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTION:
With the Ice Bed Temperature Monitoring System inoperable, POWER a.
OPERATION may continue for up to 30 days provided:
1.
The ice compartment lower inlet doors, intermediate deck doors, and top deck doors are closed; 2.
The last recorded mean ice bed temperature was less than or equal to 20 F and steady; and 3.
The ice condenser cooling system is OPERABLE with at least:
e a) 21 OPERABLE air handling ut.its, b) 2 OPERABLE glycol circulating pumps, and c) 3 OPERABLE refrigerant units; Otherwise, be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b.
With the Ice Bed Temperature Monitoring System inoperable and with the Ice Condenser Cooling System not satisfying the minimum compo-nents OPERABILITY requirements of ACTION a.3. shove, POWER OPERATION may continue for up to 6 days provided the ice compartment lower inlet doors, intermediate deck doors, and top deck doors are closed and the last recorded mean ice bed temperature was less than or equal to 15*F and steady; otherwise, be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIREMENTS 4.6.5.2 The Ice Bed Temperature Monitoring System shall be determined OPERABLE by performance of a CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
McGUIRE - UNITS 1 and 2 3/4 6-36
i CONTAINMENT SYSTEMS s'
BASES 3/4.6.5 ICE CONDENSER The requirements associated with each of the components of the ice con-denser ensure that the overall system will be available to provide sufficient pressure suppression capability to limit the containment peak pressure tran-sient to less than 14.8 psig during LOCA conditions.
3/4.6.5.1 ICE BE0 The OPERABILITY of the ice bed ensures that the required ice inventory will:
(1) be distributed evenly through the containment bays (2) contain sufficient boron to preclude dilution of the containment sump following the LOCA, and (3) contain sufficient heat removal capability to condense the Reactor Coolant System volume released c'uring a LOCA.
These conditions are consistent with the assumptions used in the accident analyses.
The minimum weight figure of 1081 pounds of ice per basket contains a 10%
\\
conservative allowance for ice loss through sublimation which is a factor of 10 higher than assumed for the ice condenser design.
The minimum weight figure of 2,099,790 pounds of ice also contains an additional 1.1% conservative allowance I
to account for systematic error in weighing instruments.
In the event that observed sublimation rates are equal to or lower than design predictions after 3 years of operation, the minimum ice baskets weight may be adjusted downward.
In addition, the number of ice baskets required to be weighed each 9 months may be reduced after 3 years of operation if such a reduction is supported by observed sublimation data.
3/4.6.5.2 ICE BE0 TEMPERATURE MONITORING SYSTEM The OPERABILITY of the Ice Bed Temperature Monitoring System ensures that the capability is available for monitoring the ice temperature.
In the event the system is inoperable, the ACTION requirements provide assurance that the ice bed heat removal capacity will be retained within the tpecified time limits.
3/4.6.5.3 ICE CONDENSER 000RS The OPERABILITY of the ice condenser doors and the requirement that they be maintained closed ensure:i that the Reactor Coolant System fluid released during a LOCA will be diverted through the ice condenser bays for heat removal and that excessive sublimation of the ice bed will not occur because of warm air intrusion.
If an ice condenser door is not capable of opening automatically, then system function is seriously degraded and immediate action must be taken to restore the opening capability of the door.
Not capable of opening automati-cally is defined as those conditions in which a door is physically blocked from opening by installation of a blocking device or by obstruction from temporary or permanent installed equipment or is otherwise inhibited from opening such as may result from ice, frost, debris or increased door opening torque.
McGUIRE - UNITS 1 and 2 B 3/4 6-5 Amendment No.120 Amendment No.102 (Unit 1)
(Unit 2)
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