ML20108C963
| ML20108C963 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 11/01/1984 |
| From: | Kalivianakis N COMMONWEALTH EDISON CO. |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| NJK-84-345, NUDOCS 8411190153 | |
| Download: ML20108C963 (3) | |
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Commonwealth Edison Quad Cities Nucrar Power Station 22710 206 Avenue North Cordova. Illinois 61242 l
Telephone 309/654-2241 j
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-2 0 " g,6 50 NJK-84-345 h
November 1, 1984 Mr. Edson G. Case, Deputy Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission liashington, D. C.
20555 Dear Mr. Case Enclosed please find a listing of those changes, tests, and experi-ments completed during the month of October 1984, for Quad-Cities Station Units 1 and 2, DPR-29 and DPR-30.
A summary of the safety evaluation is being reported in compliance with 10 CFR 50.59.
Thirty-nine copies are provided for your use.
Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-CITIES NUCLEAR POWER STATION l/,
8 N. J Kalivianakis Station Superintendent bb Enclosu re cc:
B. Rybak 0
8411190153 841101 PDR ADOCK 05000254 sS R
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Modi ficat ion M-4-1 (2)-78-20.
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Descripilon-Additional local instrumentation'has.been installed in the RCIC room
- to allow ~ local startup and_ control of the RCIC_ pump.' The instrumentation includes ON/0FF switches for:the' vacuum pump and the Condensate pump;
. Reactor-water : level, and pump speed and flow indicators. This modifica-tion _was performed to satisfy a NRC commitment for Fire Protection safe 1 shutdown.
Evaluation This modification enhances the RCIC System since the Operator has nar<e effective control of the RCIC pump during local operation. All.
Instruments and switches are equivalent in design to existing installed equipment.
Modification M-4-1-81-2' Description This modification installed Marathon terminal blocks in the Drywell Junction boxes associated with the Electromatic Relief Valves 1-203-3B, 3C, 3D, and 3E. The existing Junction boxes were replaced with larger boxes in order to accommodate the blocks. The Marathon terminal blocks were environmentally qualifed and have a qualified voltage rating of 240 volts. The modification was acccmplished by replacing the existing Junction boxes with larger ones and installing the Marathon terminal-blocks inside.
Evaluation The installation of Harathon terminal blocks increases the margin of safety by providing a method of making environmentally qualified.
electrical connections.
In addition, the qualification of these blocks i
provides assurances that the Electromatic Relief Valves will function as designed when needed.
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' Modi fication M-4-1-80-22 Description This modification upgraded the r.nchorage of various safety related instrument-racks,' MCC's, buses, and distribution panels in order to seismically qualify them. The modification is a result of I.E.
Information notice 80-21, " Anchorage and Support of Safety-Related
-Electrical Equipment". The upgrade was accomplished by installing braces or additional welds.
Evaluation The additional bracing of the equipment and. foundations on which that' equipment rests will improve the:cepability of this equipnent to withstand a seismic event.
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