View source for 05000423/LER-1998-037, Forwards LER 98-037-00,re TS 3.0.3 Entry Due to Both SW Trains Declared Inoperable Following Failure of Check Valves Associated with Injection of Sodium Hypochlorite on 980910 & 18.Util Commitments Contained in Attachment 1 to

{{Adams
| number = ML20154L971
| issue date = 10/13/1998
| title = Forwards LER 98-037-00,re TS 3.0.3 Entry Due to Both SW Trains Declared Inoperable Following Failure of Check Valves Associated with Injection of Sodium Hypochlorite on 980910 & 18.Util Commitments Contained in Attachment 1 to Ltr
| author name = Brothers M, Mccracken D
| author affiliation = NORTHEAST NUCLEAR ENERGY CO.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
| docket = 05000423
| license number = 
| contact person = 
| document report number = B17463, NUDOCS 9810200129
| package number = ML20154L974
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE
| page count = 4
}}
{{LER
| Title = Forwards LER 98-037-00,re TS 3.0.3 Entry Due to Both SW Trains Declared Inoperable Following Failure of Check Valves Associated with Injection of Sodium Hypochlorite on 980910 & 18.Util Commitments Contained in Attachment 1 to Ltr
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000423
| LER year = 2098
| LER number = 37
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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  ,                  g     g                                                Rope Ferry Rd. (Route 156), Waterford, CT 06385
                  - Nuclear En:rgy                                          Malstone Nuden Power Station Northeast Nuclear Energy Company P.O. Box 128 Waterford, CT 06385-0128
              *        *                                                    (860) 447-1791 Faz (860) 444-4277 The Northeast Utilities System                        I OCT I 31998 Docket No. 50-423 B17463 Re:10CFR50.73(a)(2)(i)(B) 10CFR50.73(a)(2)(ii)(B)
Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 l
Millstone Nuclear Power Station Unit 3 Licensee Event Report 98-037-00
                  " Technical Specification 3.0.3 Entry Due to Both Service Water Trains Declared inoperable Following Failure of Check Valves Associated with the Iniection of Sodium Hvoochlorite" l
This letter fonuards Licensee Event Report (LER) 98437-00, documenting a condition                                    l that was determined reportable at Millstone Unit No. 3 on September 10,1998 and                                       l September 18,1998. This LER is submitted pursuant to 10CFR50.73(a)(2)(i)(B) and                                       l 10CFR50.73(a)(2)(ii)(B). Northeast Nuclear Energy Company's (NNECO) commitments in response to this event are contained within Attachment 1 to this letter.
Should you have any questions regarding this submittal, please contact Mr. David A.
Smith at (860) 437-5840.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY                                   l l
FOR: M. H. Brothers Vice President - Operations                                      g-)'l' BY:
                                ',1 -JJ                                                          '
e                              Douglas S. McCracken Assistant Unit Director - Millstone Unit No. 3

==Attachment:==
: 1)         NNECO's commitments in response to LER 98-037-00
: 2)      LER 98-037-00 cc: See Page 2
      ~~ df62'0129 981013 PDR      ADOcK 05000423 S                      PDR    ,,

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U.S. Nuclear R:gulatory Commission B17463\Page 2 1
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               ' cc:    ' H. J. Miller, Region i Administrator A. C. Corne, Senior Resident inspector, Millstone Unit No. 3 J. W. Andersen, NRC Project Manager, Millstone Unit No. 3                    i f
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Docket No. 50-423 B17463 l
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Attachment 1 Millstone Nuclear Power Station, Unit No. 3 i                         NNECO's Commitments t
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      .      __ _               _       ~ _ . . _ .            . _ .       . _ __.. - . _ _ . _ _ _ _ _           _ . _ _ _ _
  .         U.S. Nucitar Regulatory Commission B17463%ttachment 1\Page 1 Attachment 1 List of Regulatory Commitments The following table identifies those actions committed to by NNECO in this document. Please notify the Manager - Regulatory Compliance at the Millstone Nuclear Power Station Unit No. 3 of any questions regarding this document or any associated regulatory commitments.
Number                                   Commitment                                     Due B17463-01             The Sodium Hypochlorite injection point                               Completed downstream of the Service Water System pump discharge strainer has been isolated                                                   I and the injection point to the service water pump suction bell was re-established.
B17463-02             Millstone Unit No. 3 design management                  December 15,1998 will be briefed on the lessons learned from these events.
B17463-03             Improve the Design Control Manual design                 December 15,1998 engineering check list for interface between design engineering and the materials group.
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B17463 l l
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Attachment 2                                        l l
Millstone Nuclear Power Station, Unit No. 3 NNECO's Submittal of' Technical Specification 3.03 Entry Due tc Both Service Water Trains Declared inoperable Following Failure of Check Valves Associated with the injection of Sodium Hypochlorite" l
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* c,                                                                                   October 1998
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