ML17054A116
| ML17054A116 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 09/08/1983 |
| From: | Vassallo D Office of Nuclear Reactor Regulation |
| To: | Rhode G NIAGARA MOHAWK POWER CORP. |
| References | |
| NUDOCS 8309280526 | |
| Download: ML17054A116 (8) | |
Text
September 8,
1983 Docket No. 50-220 Mr. G. K. Rhode Senior Vice President Nfagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202
Dear Mr. Rhode:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION ON MPA C-ll, BWR RPS POWER SUPPLY MODIFICATION DISTRIBUTION:
Docket File NRC PDR Local PDR I. Ahmed D. Eisenhut OELD E. Jordan R. Hermann S. Norris NSIC J. Taylor ACRS (10)
ORBII2 Reading g/.y~
Fi ic-RE:
Nine Mile Point Nuclear Station, Unit No.
1 Reference fs made to your submftta'I dated July 22, 1983, which provided information fn response to out request dated June 3, 1983 on the power modifications for the reactor protection system.
The information was reviewed by our staff, and we find that the items identified in the enclosure are required to complete our review.
In order to support our review schedule for this multi-plant activity, you are requested to provide the information within 45-days of the date of receipt of this letter.
The reporting and/or recordkeeping requirements contained fn this letter affect fewer than ten respondents; therefore, OMB clearance fs not required under P.L.96-511.
Sfncerely, Original signed by/
8309280526 830908 PDR DR ADOCH, 05000220 P
Enclosure:
As stated cc w/enclosure See next page Domenfc B. Yassallo, Chief Operation Reactors Branch P2 Division of Licensing OFFICE)
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Mr. G. K. Rhode Niacwra Mohawk power Corporation Nine Mile Point'uclear Station, Unit No.
1 CC:
Troy B. Conner, Jr.,
Esq.
Conner 8 Wetterhahn Suite 1050 1747 Pennsylvania
- Avenue, N.
W.
Washington, D. C.
20006 Mr. Robert P. Jones, Supervisor Town of Scriba R.
D. 44
- Oswego, New York 13126 Niagara Mohawk power Corporation ATTN:
Mr. Thomas perkins plant Superintendent Nine Mile point Nuclear Station post Office Box 32
- Lycoming, New York 13093 U. S. Environmental Protection Agency Region II Office Regional Radiation Representative 26 Federal Plaza New York, New York 10007 Resident Inspector U. S. Nuclear Regulatory Commission post Office Box 126
- Lycoming, New York 13093 John W. Keib, Esquire Niagara Mohawk power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 Thomas A. Murley Regional Administrator Region I Office U. S. Nuclear Regulatory Commission 631 Park Avenue King of prussia, Pennsylvania 19406.
Mr. Jay Dunkleberger Division of policy Analysis and planning New York State Energy Office Agency Building 2, Empire State Plaza
- Albany, New York 12223
~I
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION NINE MILE POINT UNIT 1
Monitoring of Electric Power to the Reactor Protection System Ref. 1:
Niagara Mohawk Power Corporation letter (T.
E.
Lempges), to the NRC (D. B. Vassallo),
dated July 22, 1983.
1.
The draft proposed Technical Specifications (Ref. 1) do not include the alternate source (Bus 130) in Specification 3.6.9 (LCOs).
- Also, no provision was included in Specification 4.6.9 for a channel functional test at least once per 6 months (see attached model Standard Technical Specifications).
Also note that the undervoltage relay setpoint in the relay dropout voltage and the time delay listed in Table 4.6.9 should be the actual time del ay for the setpoint and not for any other vol tage as shown in Reference 1.
Submit revised TS including these provisions in accordance with the model STS.
The TS resubmittal should also be consistent with results of the additional setpoint study to be completed by November 1, 1983.
2.
The GE certified RPS component (relays and contactors) operating capability is
+10% of 115 volts and
-5% of 60 Hz on its terminal, resulting in a voltage range of 126.5 to 103.5 volts and a frequency range of 57 to 60 Hz.
The output of the MG sets should be adjusted so as to provide (com-pensating for maximum line voltage drop) the GE recommended nominal operating voltage of 115
+2 volts at the RPS component terminals.
The undervoltage and overvoltage trip setpoints (compensating for the maximum line voltage drop) and the underfrequency trip setpoint of the monitoring packages should then be selected so as not to exceed the operating capa-bilities of the RPS components.
Verify that the proposed setpoints in TS Table 4.6.9 (Ref. 1) meet these requirements.
The time delay associated with the
+lOX voltage and -5X frequency trip setpoints should be specified in the TS table.
Also, the undervoltage setting of 103.5 volts reflects relay dropout rather than pickup as indicated in the table.
le
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ELECTRICAL R%EZ, STSTENS REACTOR PROTECTION SYSTEM ELECTRIC PSCR K)NXTORINC LIKXTDIGCOHDZTIOÃ FOR OPERATION
. 3.8.4.4.
Trci RPS electric paver mnitoring channels for'ach inservice RPS NC "
set oi <<lternate source shall be OPERhBL1k.
APPLICABILITY: h,t a11 times JCTZOK:
a-'ith one RPS electric'~r monitoring channel. for an inakrvice RPS'G set or alternate p~ supply inoperable, restore the i arable channel to 0PEMLE status vithin 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or remove the assoc1ated RPS HG set or alternate pawer supply from eervtce.
b.'th both SPS electric pewter monitoring chanuels for an ineervice.
'RPS
'NG set or alternate peter. aupply hxoperable, restore at least one to OPE1XKZ status within 30 Mnutea or remove. the associated EPS 2$ set ox alternate power supply from service-S1RVZILLASCE REQUzxE~RS
'4.8.4A
. The abive specified RPS paver uenitoriaj'cyst'em fiiitxaaentation-xha1l--' --'-.-
be OFERkSLE'.
kt least once per 6 aaatha by perforaance of a CEQB63L FUHCTZOhhI TEST;
'nd ht, 1eaat once per 18 months by demonstrating the OPERhBILITY of ovez-voltage, unde~cltage
'and under frequency protective instrumentation'y performance of a CEQAKL CQ ZMLTIOE including aQaulated automatic.
actuation of the protective relays, tripping 3.ogic and output circuit breakers and verifying the foliaving eetpo'inta.
l" 0'va~oltage
< (l32) VkC; 2.
Dade~oltage
> (108') VLC, and 3.
U de~fr~~ncy
> (57)
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