ML20002C815
| ML20002C815 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 05/11/1978 |
| From: | Bilby C, Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20002C816 | List: |
| References | |
| NUDOCS 8101120063 | |
| Download: ML20002C815 (6) | |
Text
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.JJ Director, Nuclear Reactor Regulation M
Att: Mr Dennis L Ziecann, Chief
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Operating Reactors Branch No 2 ij
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- J f2 US Nuclear Regulatory Co==ission G
m Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POIHT PLANT - REQUEST FOR T/S CHANGE: DE.RGENCY POTrR SUPPLIES Trans=itted herewith are three (3) original and thirty-seven (37) conformed copies of a proposed change to the Technical Specifications for the Big Rock Point Plant, Docket 50-155, License DPR-6.
The purpose of this change is to incorporate surveillance testing for safety-related d-c power supplies, clarify existing e=ergency power supply Limiting Conditionc of Operation and modify existing surveillance requirements for the diesel fire pump batteries. Since the submission is made, in part, in response to an NRC staff request dated December 7, 19TT and the content of the other changes is deemed to be primarily administrative or claritive in nature, it is concluded that the amendment should be exempt from all fees as specified in 10 CFR, Part ITO, Section 170.22.
.J David A Bixel Nuclear Licensing Administrator CC: JGKeppler, USNRC F
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k CONSU'ERS POWER COMPANY Docket 50-155 Request for Cnange to the Technical Specifications License DPR-6 For the reasons hereinafter set forth, it is requested that the Technical Specifications contained in Facility Operating License DPR-6, Docket 50-155, issued to ' Consumers Power Company on May 1,1964 for the Big Rock Point Plant be changed as described in'Section I below:
I.
Change ( s )
A.
Revise Section ll.h.5.3.A.1.(e) to read:
(e) Verify that the cells, cell plates ana battery racks show no visual indication of physical damage or abnormal deterioration for the station battery and the RDS batteries.
B.
Revise Section ll.h.5 3.A.l.(f) to read:
(f) Verify that the cell-to-cell and ter=inal connections are clean, tight, free of corrosion and coated with anticorrosion material for the station battery and the RDS batteries.
C.
Revise Section 11.h.5 3.A.l.(g) to read:
(g) Verify that the battery chargers for the station battery and the RDS batteries will supply at least 30 a= peres at a minicus of 135 volts for at least h hours.
D.
Revise Section 11.4.5 3.A.l.(h) to read:
(h) Verify that the capacity of the station battery and the RDS bat-teries is adequate to supply and maintain in OPERABLE status all of the actual emergency loads for the design time interval when the battery is subjected to a battery service test. The design time interval for the RDS batteries is one hour and for the station battery is eight hours.
E.
Revise Section ll.k.5 3.A.2.(b) to read:
(b) Verify that the cell voltage is 3,2.0 volts and specific gravity is 3,1.2 of each cell of the station battery; and, verify the cell voltage is 3,6.0 volts and specific gravity is > 1.2 on eacn cell of the RDS batteries.
A F.
Revise Section 11.h. 5 3. A.3 'to read:
3 Weekly:
.(a) The electrolyte level of each RDS battery pilot cell and the station battery pilot cell is between the minimum and maximum level indication marks.
(b) The pilot cell specific gravity for RDS and station batteries corrected.to (77) F is 2,1.2.
(c) The station battery pilot cell. voltage is 2,2.0 volts. The RDS battery pilot cell voltage is > 6.0 volts.
(d) The overall battery voltage is 3,125 volts for the station battery and the RDS batteries.
-(e) ' Test start the diesel generator and run for varm-up period.
(f) Verify that the diesel generator battery electrolyte level is above plates and that the overall battery voltage is 3, 2h volts.
G.
Add Section 11.h.5.3.h as follows:
k.
Quarterly --Verify the following:
(a) That the specific gravity of the diesel generator battery is appropriate for continued service; (b). That the diesel generator battery and battery rack show no vi-sual indication of physical dsmage or abnormal deterioration; and (c) That the diesel generator battery terminal connections are clean, tight, free of corrosion and coated with anticorrosion mate-i rial.
H.
Revise Section ll.h.5 3.5 to read:
5 Sixty months - At least once per 60 months during shutdown, verify that the RDS batteries and the station battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test. This performance discharge test shall be performed subsequent to the satisfactory completion of the required battery service test of Part. ll.h.5.3.A.l. (h).
I.
Add Sections ll.3.5.3. A.8 and 9 an follows:
8.
During reactor power operation, the 138 kV line may~ be out of 1
service for repair for periods up to three (3) days.
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If Specification A.8 is not met, a normal orderly shutdown shall be initiated within one (1) hour and the reactor shall be shut down as described in Section 1.2 5,(a) within twelve (12) hours and shut down as described in Section 1.2.5(a) and (b) within 'the following 2h hours.
J.
Add the foll wing sentence after the first paragraph in the Bases.
The operabi.ity of the diesel battery and charger is verified by the weekly ste? ting test of the diesel and by the weekly verification of.
the electroryte level and overall battery voltage.
K.
Revise Section 4.7 11.1.2.C.1 to read:
1.
The batteries and battery racks show no visual indication of physical damage or abnormal deterioration, and NOTE: Corrected Technical Specifications pages are attached.
II.
Discussion By letter dated December 7,1977, Consumers Power Company was required to submit Technical Specifications changes for the Big Rock Point Plant that incorp3 rated additional d-c power sources used for plant safety systems.
These changes were to be consistent with the existing Big Rock Point, Plant specifications pertaining to emergency power sources. A thorough evalua-tion was conducted and the necessary changes were developed. Additionally, other changes to thic section are being provided to enhance the overall clar-ity.
Changes A, 3, C, D, E, F [(a) through (d)] and H are primarily editorial in nature, They are provided to improve clarity and to correct a minor error; each RDS battery cell is a 6-volt unit consisting of three sections per cell, thus, minimum cell voltage for each RDS battery should be 6 volts versus the presently specified 2 volts.
Changes F((f)], G and J are provided to meet the intent of the staff's December 7, 1977 letter. They were developed based upon existing Technical
. Specifications requirements and supplemented by standards derived from the diesel fire pu=p battery surveillance. Other conditions considered include the fact that the diesel generator battery is only required-during the 3
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starting of the diesel generator and that the diesel generator is started weekly. Thus, the operability of both the charger 7.nd battery is checked c '
least weekly through both diesel. operation and battery electrolyte level and voltage checks. Further,.the proposed quarterly checks provide an adequate level of assurance that no long-term degradation problems are daveloping and, as previously indicated, they are consistent with standards developed by the staff for the diesel fire pu=p batteries. There are no proposed changes to the " Limiting Conditions for Operation" for the diesel generator battery or charger since it is concluded that Section ll.3 5 3.A.2 is ap-plicable for these components.
Change I is provided to clarify the operability status of the 138 kV power supply. Presently, the Big Rock Point Plant Technical Specifications do not specifically allow continued plant operation with the 138 kV line de-energized by virtue of stating.that the line shall "normally be available."
However, no required action is clearly identified, and there is no speci-fled time frame in which to perform the action. ' In order to rectify this situation, Change I is proposed. This change vould allow continued reactor power operation for up to three days with the 138 kV line inoper.
able; after which, a plant shutdown vould be required. This is consistent with the existing LCOs for the h6 kV power supply and the diesel generator and is deemed appropriate since the level of backup electrical protection vill not be reduced over that occurring with a loss of the h6 kV power supply or diesel generator.
Change 'K is submitted to delete inspection of the diesel generator battery plates. This requirement is impossible to meet since the battery case le opaque (made of hard rubber) and, therefore, not conducive for plate in-spections.
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f.
III. Conclusion Based on the foregoing, both the Big Rock Point Plant Review Comittee and the Safety and Audit. Review Board have concluded that this change is acceptable.
CONSUMERS POWER COMPA!Tf By.
1 C R Bilby, Vice Pres t
Production & Transsi on Sworn and subscribed to before me this lith day of May 1978.
/E Y Linda R Thayer, IIotapigan Public Jackson County, Mic.
My commission expires July 9, 1979 4
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