View source for A09187, Submits Results of Review of Allegation R1-90-A-0205 Re Oil Not Removed from Motor Prior to Removing Motor or Disconnecting Motor Leads.Procedure MP-272OC5 Will Be Clarified

{{Adams
| number = ML20073C384
| issue date = 01/04/1991
| title = Submits Results of Review of Allegation R1-90-A-0205 Re Oil Not Removed from Motor Prior to Removing Motor or Disconnecting Motor Leads.Procedure MP-272OC5 Will Be Clarified
| author name = Mroczka E
| author affiliation = NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
| addressee name = Wenzinger E
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| docket = 05000336
| license number = 
| contact person = 
| document report number = A09187, A9187, NUDOCS 9104250197
| package number = ML20073C307
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE
| page count = 3
}}

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L   L     a C,* ".', [e'1". ',%~,                                                  rA 6620 January 4, 1991 Docket No. 50-336 A09187 dr. E. C. Venzinger, Chief Projects Branch No. 4 Division of Reactor Projects U. S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, Pennsylvania 19406

==Dear Hr. Venzinger:==

Millstone Nuclear Power Station, Unit No. 2 RI-90-A-0205 Ve have completed our review of an allegation concerning activities at Millstone Unit 2 (RI-90-A-0205). As requested in your transmittal {{letter dated|date=December 6, 1990|text=letter dated December 6, 1990}}, our response does not contain any personal privacy, proprietary, or rafeguards inforestion. The material contained in this response may be released to the public and placed in the NRC Public Document Room at your discretion. The NRC letter and our response hava received controlled and limited distribution on a "need to know" basis during the preparation of this response.
Issue On    November 4, 1990, the motor from P5C was observed in the parking lot.
The oil had not been removed from the motor as required by MP-272004, Step 5.1.2,       which is performed prior to disconnecting the motor leads. The AVO for the motor removal did not contain MP-2720D4, and this omission is contrary to ACP-2.020. The AVO did not contain a material accountability log as required by MP-272005, Step 4.4.
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s' Mr$ B. C. Vensinger, Chief U. S. Nuclear Regulatory Commission                                                                      ,
A09187/Page 2 January 4, 1991                                                                                          l Please discuss these statements and their validity. Are any of the alleged procedural compliance issues valid, and if so, do these occurrences suggest a generic procedural adherence problem?
This issue was segregated                 into four distinct segments, each of which is addressed in turn below.
: 1. 011 had not been removed from the motor prior to removing the motor.

===Response===
011 shot 1d have been removed from the upper and lover bearing housings prior to removing the pump from the screenhouse. Removal of the motor is the responsibility of the Electrical Job Supervisort however, the removal of the oil and moving the motor is actually performed by the mechanics. The procedure governing the pump overhaul does not address removing oil prior to removing the motor. The problem aopears to be more a coordination problem rather than a procedure compliance problem.                           '
The procedure governing the pump overhaul vill be revised to ensure better coordination between mechanics and electricians for the motor removal task.
: 2. 011 should have been removed from the motor prior to disconnecting the motor leads.
Response                                                                                         ,
MP-272004 is a generic procedure for the overhaul of 4160 volt motors.
Unit 2 Maintenance is in the process of preparing specific procedures prepared for each model of 4160 volt motors.                       MP-272082 was therefore,         HP-2720B2  is specifically for the service water pump motors the procedure that governs the removal and overhaul activities for these motors. The steps associated with the remoral of the motor in MP-272082 vere resequenced so that the motor leads are disconnected prior to requiring that the oil be removed from the bearing housings.
Therefore, this aspect of the issue is not a concern.
: 3. The AVO for the motor removal did not contain MP-2720D4 which is contrary to ACP-2.02C.

===Response===
The procedures that are listed in the AVO are a function of the local ID of the equipment. The AVO vas prepared under the local ID for the pump rather than the local ID for the motor. Therefore, procedure HP-2720B2 was not listed. ACP-0A-2.02C states that an approved procedure is required for disassembly, repair, and reassembly of all Category 1 equipment.                 AVO M2-90-13312 specified disconnecting motor leads and motor removals therefore, a procedure was not specifically required by ACP-0A-2.020. In revieving-this event, it is evident that

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           ,'Mr. E. C. Vensinger, Chief U. S. Nuclear Regulatory Commission A09187/Page 3 January 4, 1991 procedure HP-2702B2 should have been part of the work          package.' This the procedure provides guidance on the sequencing of the removal of motor. The procedures listed for the local ID for the pump have been revised to include the electrical procedures HP-2720B2 and HP-272005, and the pump overhaul procedure has been revised to include instruction for removal of the motor.
: 4.         The AVO did not contain a material accountability log as required by NP-272005.

===Response===
The material accountability precaution was 'N/A'd" and initialed by the job supervisor. Material accountability is not required for either the switchgear cubical door or the rear cable compartment cover that encloses the area where workman grounds are installed. Therefore, a material accountability log is not required to be included in the AVO.
This :larification vill be added to procedure HP-272005.
After our review and evaluation, we find that none of these issues taken either singularly or collectively present any indication of a compromise of nuclear safety. Ve appreciate the opportunity to respond and explain the basis for our actions. Please contact members of my staff if there are any further questions on any of these matters.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY E. W)tt itia Senivr VI:e President 1, 2, cc         V. J. Raymond, Senior Resident Inspector, Hillstone Unit Nos.
and 3
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