ML20137F940
| ML20137F940 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/20/1985 |
| From: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Murphy W VERMONT YANKEE NUCLEAR POWER CORP. |
| References | |
| NUDOCS 8508270130 | |
| Download: ML20137F940 (4) | |
Text
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gG20BBS Docket No. 50-271 Vermont Yankee Nuclear Power Corporation ATTN:
Mr. Warren P. Murphy Vice President and Manager of Operations RD 5, Box 169 Ferry Road Brattleboro, Vermont 05301 Gentlemen:
Subject:
Pipe Replacement Outage at Vermont Yankee A meeting was held on July 17, 1985 at 9:00 a.m. at the NRC Region I Office to discuss Vermont Yankee Nuclear Power Corporation plans for the upcoming pipe re-placement and refueling outage at the Vermont Yankee Nuclear Power Station.
The meeting was requested by the NRC to review Vermont Yankee's plans for controlling the outage activities and to aid NRC Region I planning for inspections during the outage.
Also, the meeting was attended by representatives from the Vermont Depart-ment of Public Service and Yankee Atomic Electric Company.
A list of meeting at-teraiees is enclosed.
Based on the presentations of your staff and subsequent discussions, we understand the outage to involve the following aspects:
1.
The outage is planned to begin on September 21, 1985.
2.
The 304 stainless steel piping will be removed and replaced in the Recircula-tion System and the connecting lines of the Residual Heat Removal (RHR) Sys-tem.
The replacement material will be 316 stainless steel nuclear grade.
3.
A revised management structure is being utilized to accomplish the pipe re-placement.
The Plant Manager will retain full responsibility for the safe operation of the facility and will continue to direct plant staff.
A separate project organization has been established reporting to the Project Manager, who reports to the Vice President / Manager of Operations.
The project organi-zation is responsible for the design, construction, installation, and testing of the replacement piping.
The project organization utilities a matrix man-agement approach and has supervisors for engineering, construction, decon/
restoration, quality assurance, and finance / administration.
An interface procedure has been written under the station administrative procedures to coordinate interfaces between plant and project personnel.
4.
Although Vermont Yankee will exercise primary authority over the pipe replace-ment, major parts of the work will be contracted.
Morrison-Knudsen Co., Inc.
(MK) has been contracted to perform the construction work, General Electric Company (GE) has been contracted to perform detailed engineering analyses, and Pacific Nuclear Company has been contracted to perform the piping decon-tamination.
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Vermont Yankee Nuclear Power 2
Corporation AUG 2 01983 5.
The project organization has been planning the piping replacement for over a year.
This planning time has been utilized to visit all sites that have replaced recirculation system piping and to understand the lessons that were learned during their piping outages.
Lessons learned during this planning prompted Vermont Yankee to establish a separate decon/ restoration supervisor, to have the construction contractor (MK) perform detailed planning in the drywell during the prior outage (1984), and to eliminate unnecessary jet pump disassembly work.
6.
The configuration of the replacement pipe will be similar to the existing de-sign.
There will be changes to the piping supports, and the ring header of the Recirculation System will be modified to delete the piping and valves connecting loop A and loop B.
(The connecting pipe is no longer permitted to be used.) Other changes will be made to reduce the number of welds and facilitate inservice inspection.
7.
Design analysis will be performed to Standard B31.1-1977 to provide a common basis with existing plant design.
Fabrication and installation will be per-formed and inspected to the requirements of the ASME Code,Section III, 1980 Edition through the Summer 1982 Addendum.
Preservice examinations will be performed in accordance with the existing Vermont Yankee Inservice Inspection Program.
8.
A thorough 10 CFR 50.59 review will be completed for all changes to be per-formed during the outage prior to initiating the outage.
9.
Decontamination of piping to be removed, temporary shielding, mockup training, and other drywell and reactor vessel decontamination will be used to mitigate personnel radiation exposures. _The estimated radiation exposure is approxi-mately 1400 man-Rem.
The ALARA (As Low As Reasonably Achievable) aspects of the work have been reviewed and will continue to be reviewed as the work progresses by MK, project, and plant ALARA engineers.
10.
The current schedule plan calls for two (2) ten hour shifts, six (6) days a week with the back four (4) hours and Sundays to be used for NDE and any cri-tical work that may be necessary.
Based on this, the schedule projects the outage to last approximately 32 weeks.
11.
The areas of startup testing, security, housekeeping, and fire protection are planned to be performed with expanded staffing under existing plant programs.
The meeting was beneficial and improved our understanding of your planned outage.
Sincerely, Oriniual Signed By:
g Richard W. Starostecki, Director Division of Reactor Projects
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l Vermont Yankee Nuclear Power 3
Corporation AUG 2 01985
Enclosure:
Meeting Attendees i.
cc w/ enc 1:
Mr. R. W. Capstick, Licensing Engineer Mr. W. F. Conway, President and Chief Executive Officer Mr. J. P. Pelletier, Plant Manager 3
Mr. Donald Hunter, Vice President Mr. Cort Richardson, Vermont Public Interest Research Group, Inc.
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector State of New Hampshire State of Vermont bec w/ encl:
Region I Docket Room (with concurrences)
Section Chief, DRP T. T. Martin RI Meeting Attendees S. Ebnete.r, RI RI:DPR RI:DRP R:
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Meyer/meo Tripp inger Sa 4tecki 8/7/85 0FFICIAL RECORD COPY L
e PIPE REPLACEMENT MEETING ATTENDEES Vermont Yankee J. Gianfrancesco, Project Construction Supervisor
'S. Jefferson, Assistant to Plant Manager B. Leach, Chemistry and Health Physics Supervisor R. Morrissette, Plant Health Physics J. Pelletier, Plant Manager D. Reid, Operations Superintendent S. Verkasy, Project Decon and Restoration Supervisor W. Wittmer, Project Manager Yankee Atomic J. Hoffman, Project Engineering Supervisor A. Kadyle, Project Manager R. Martin, Project Quality Assurance Supervisor Vermont Department of Public Service P. Paull, Nuclear Engineer Nuclear Regulatory Commission S. Ebneter, Director, Division of Reactor Safety (DRS)
W. Kane, Deputy Director, Division of Reactor Projects (DRP)
E. Wenzinger, Chief, Projects Branch No. 3, DRP J. Durr, Chief, Engineering Branch, DRS L. Tripp, Chief, Reactor Projects Section 3A, DRP W. Pasciak, Chief, BWR Radiological Protection Section, Division of Radiation Safety and Safeguards (DRSS)
G. Meyer, Project Engineer, DRP H. Gray, Lead Reactor Engineer, DRS H. Bicehouse, Radiation Specialist, DRSS L. Myers, Radiation Specialist, DRSS u