View source for BECO-86-179, Responds to IE Bulletin 86-003, Potential Failure of Multiple ECCS Pumps Due to Single Failure of Air-Operated Valve in Min Flow Recirculation Line. Required Actions Will Be Implemented Per IE Bulletin 86-001

{{Adams
| number = ML20214E293
| issue date = 11/20/1986
| title = Responds to IE Bulletin 86-003, Potential Failure of Multiple ECCS Pumps Due to Single Failure of Air-Operated Valve in Min Flow Recirculation Line. Required Actions Will Be Implemented Per IE Bulletin 86-001
| author name = Lydon J
| author affiliation = BOSTON EDISON CO.
| addressee name = Murley T
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| docket = 05000293
| license number = 
| contact person = 
| document report number = BECO-86-179, IEB-86-001, IEB-86-003, IEB-86-1, IEB-86-3, NUDOCS 8611240398
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 2
}}

=Text=
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General Offices 800 Boylston Street Boston, Massachusetts 02199 James M. Lydon Chief Operating Officer                                                      November 20, 1986 BECo 86 179 Dr. Thomas E. Murley Regional Administrator Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA            19406 License DPR-35 Docket 50-293

==Subject:==
IE Bulletin No. 86-03, Potential Failure of Multiple ECCS Pumps Due to Single Failure of Air-Operated Valve in Minimum Flow Recirculation Line

==References:==
: 1) NRC Letter of October 8, 1986, IEB 86-03
: 2) Boston Edison Letter of September 8, 1986 to Dr. T. E. Murley
: 3) Boston Edison Letter of May 30, 1986 to Dr. T. E. Murley
: 4) Boston Edison Letter of May 23, 1986 to Dr. T. E. Murley

==Dear Sir:==

IE Bulletin 86-03, dated October 8, 1986, required a series of actions to address single failures of minimue flow recirculation lines containing air-operated isolation valves which could result in a common-cause failure of all emergency core cooling system (ECCS) pumps in a system. This bulletin also instructed that the BWR plants which responded to IE Bulletin 86-01
          " Minimum Flow Logic Problems that Could Disable RHR Pumps" need not repeat the actions that are required for IE Bulletin 86-03.
Boston Edison had responded to IE Bulletin 86-01 by a series of letters to Dr.
T. E. Murley (References 2, 3 & 4) and described the corrective actions that Boston Edison would implement to bring the RHR system into full compilance with Pilgrim FSAR section 7.4.2-5(a). Boston Edison has also confirmed in Reference 4 after evaluation of all emergency core cooling systems (ECCS) at PNPS that the noncompilance as identified in IE Bulletin 86-01 is applicable only to the RHR minimum flow protection logic.
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i BOSTON EDISON COMPANY Dr. T. E. Murley November 20, 1986 Page 2 In Reference 2, Boston Edison had stated that the recommended corrective actions would be implemented prior to restarting from the current outage at PNPS in response to IE Bulletin 86-01.
This completes our response to IE Bulletin 86-03. Should you wish further information, please contact us.
Very truly yo             s,,
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TAV/ns cc:  U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Mr. John A. Zwolinski, Director BWR Project Directorate #1 Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Commonwealth of Massachusetts)
County of Suffolk              )
Then personally appeared before me, J. M. Lydon, who, being duly sworn, did state that he is Chief Operating Officer of Boston Edison Company and that he is duly auMorized to execute and file the submittal contained herein in the name and on behalf of Boston Edison Company and that the statements in said submittal are true to the best of his knowledge and belief.
c My commission expires:       APR 0 31992 DATE                         h0TARY P'UBLIC c, r e e, . .,y
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