ML19260C667
| ML19260C667 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/17/1979 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8001080272 | |
| Download: ML19260C667 (4) | |
Text
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Io, UNITED STATES
'S yy y,"3. c 3 i NUCLEAR REGULATORY COMMISSION g*'
E WASHINGTON, D. C. 20555
/$
o r
%, y 4f December 17, 1979 Docket No. 50-368 Mr. William Cavanaugh, III Vice President, Generation and Construction Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203
Dear Mr. Cavanaugh:
We have reviewed the information provided in your submittals dated September 1, October 18, 1978 and January 15, 1979 concerning the fire protection modifications at Arkansas Nuclear One, Unit No. 2 and have detemined that insufficient detail has been provided to detemine the acceptability of the designs. The enclosure identifies the additional infor-ation required to complete our reviews. We request the additional information within 60 days of receipt of this letter.
Sincerely, O
g _j j 4 ba:s/
Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors
Enclosure:
Request for Additional Information en Fire Protection cc w/ enclosure:
See next page 1702 269 292
/[
8001080
Arkr.nsas Power & Light Company cc:
Phillip K. Lyon, Esq.
House, Holms & Jewell 1550 Tower Building Little Rock, Arkansas 72201 Mr. David C. Trimble Manager, Licensing Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203 Mr. James P. O'Hanlon General Manager Arkansas Nuclear One P. O. 3ox 608 Russellville, Arkansas 72801 Mr. William Johnson U. 5. Nuclear Regulatory Commission P. O. Box 2090 Russellville, Arkansas 72801 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Troy B. Conner, Jr., Esq.
Conner, Moore & Corber 1747 Pennsylvania Avenue, N.W.
Washington, D.C.
20006 Arkansas Polytechnic College Russellville, Arkansas 72801 Director, Bureau of Environmental Health Services 4815 West Markham Street Little Rock, Arkansas 72201 1702 270
REQUEST FOR ADDITIONAL INFORMATION Enclosure ARXAMSAS NUCLEAR ONE-UNIT 2 FIRE PROTECTION DOCKET NO. 50-368 1.
(SER Item 3.4 ) PROTECTION OF REDUNDANT CABLES IN THE MCC ROOM (a) Describe the extent of coverage with carboline of the green division cables within the room (show by sketch, etc);
(b) Describe the extent of coverage of tray EC 104/105 with marinite board; and (c) Identify the thickness of marinite board used and the distance the marinite extends beyond the side rails on either side of the tray.
2.
(SER Item 3.8) POTECTION OF REDUNDANT CABLES IN THE ELECTRICAL EOUIPMENT ROCM (a) Same question as 1(c); and (b) Identify the distance that the marinite extends beyond the cross-overs where safety cables cross in proximity to non-safety trays.
3.
(SER Item 3.9) PROTECTION OF REDUNDANT CABLES IN THE LOWER SOUTH ELECTRICAL PENETRATION ROOM (a) Same question as 1(c); and (b) Same question as 2(b).
4.
(SER Item 3.9) REACTOR COOLANT PUMP OIL COLLECTION SYSTEM SER Item 3.18 indicates that the reactor coolant pump oil collection system will be upgraded to provide collection capability a: all potential leakage points. This was based on AP&L's comitment by letter of June 29, 1978 to meet staff position PF.20. This position called for evaluation of the existing reactor coolant pump oil collection system and upgrading where necessary to assure that potential leakage points were protected.
This pro-tection would include splash guards and collection pans for oil level sight glasses, flanged or gasketed oil connections, oil cooler (if external to reservoir), lift pump, drain and fill connection points, and oil reservoirs.
However, infornation provided by the licensee does not pmvide an evaluation to show that the staff position is met, or indicate what modifications are required to meet the staff position.
A brief review by the staff indicates the following deficiencies:
(.a) No spray deflectors on flanged connections or collection pans under external piping and flanged connections; 1702 271
- * (b) No oil collection pans around the upper reservoir to collect leakage from fill connections, upper bearing oil gauges, and piping to the oil level transmitter; (c) No oil collection pans to collect leakage from lower bearing oil gauge and fille.- lines.
Therefore, provide an evaluation and details to show that the staff position is met or indicate what modifications will be made to meet the staff position, 1702 272