ML20138R310
| ML20138R310 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 12/23/1985 |
| From: | Ebneter S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Murphy W VERMONT YANKEE NUCLEAR POWER CORP. |
| References | |
| NUDOCS 8512310168 | |
| Download: ML20138R310 (6) | |
Text
.
DEC 2 31985 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:
NRC Independent Measurements The NRC will perform an independent verification inspection during the period January 21 through January 31, 1986 at Vermont Yankee Nuclear Power Station, using the NRC Nondestructive Examination (NDE) Van and contractor technicians under NRC direction. The replacement piping system welds will be re examined on a sampling basis as a supplement to our current inspection program.
Similar nondestructive examinations have been conducted by the NRC at other operating facilities.
The inspection will consist of the required piping code fabrication and installation examinations and review of quality documentation.
The NRC staff will work closely with your staff to develop a work schedule that will minimize our impact on your outage schedule. We anticipate we will require 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> each night, distributed over the two week period, of containment access to perform radiography. During the performance of radiography, we will require restricted personnel access to containment for radiological safety purposes.
You should prepare and transmit, to the attention of Harry W. Kerch, Region I, a list of required information necessary for the NRC team to obtain access to the Vermont Yankee Station. Also please forward the weld data packages, as described in Attachment A, to the Region I office by January 6,1986.
Members of your staff will be kept informed of our inspection progress and sig-nificant findings. An exit meeting with you or members of your staff will be conducted on January 31, 1986, in accordance with our normal procedures. The evaluation.of examination results and preparation of an inspection report will be completed and the results of the inspection will be transmitted to you through the standard NRC inspection report.
P 1M m2agggt an2g G
OFFICIAL RECORD COPY-KERCH12/20/85 - 0001.0.0-l l 12/20/85
$6
_ Vermont Yankee Nuclear Power Corporation 2
-~
Additional information relating to the NDE van activities at your facility are discussed in Attachments A, B and C.
Sincerely, Stewart D. Ebneter, Director Division of Reactor Safety Attachments:
As Stated cc w/attchs:
R. W. Capstick, Licensing Engineer W. F. Conway, President and Chief Executive Officer J. P. Pelletier, Plant Manager Donald Hunter, Vice President Cort Richardson, Vermont Public Interest Research Group, Inc.
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector State of New Hampshire State of Vermont bcc w/attchs:
Region I Docket Room (with concurrences)
Management Assistant, DRMA (w/o encl)
Section Chief, DRP M. McBride, RI, Pilgrim H. Eichenholz, SRI, Yankee V. Rooney, LPM, NRR J
- DR$
/RI:DRS
- DRS 4
yK rcni y
Wi Durr w4 gins ws f
so OFFICIAL RECORD COPY KERCH12/20/85 - 0002.0.0 12/20/85
DATA PACKAGES - ATTACHMENT A After the welds have been selected by the NRC Senior Resident Inspector for NDE inspection, we request that you prepare a package containing the following on each weld:
Inspection Report Weld History (QC History)
Material Certifications for base materials Weld Wire Certifications Piping _ drawings, isometric of welds locations NDE Reports on all NDE performed NDE Procedures for RT, PT, MT and VT Weld Procedures Bolt Torquing Procedures (Structural and Pipe Hangers)
Piping and Installation Procedure (only section that specifies code and addenda)
The assembled packages should be forwarded to:
US Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 ATTN: Mr. Harry Kerch ei 9'
1
-...,-n...
,v.
l i
SUPPLEMENTAL NDE VAN INFORMATION ATTACHMENT B 1.
NDE Van Support Requirements We request that the NRC-NDE Van be positioned as near as practicable to the containment area entrance to facilitate the performance of inspec-tions.
a.
The van requires the following connections while sited at your facility:
Site water with a garden hose connection - this water is for film rinse.
Requirement for film rinse water drain (continual). No chemical disposal will occur from the van without prior concurrence from appropriate licensee personnel. At the end of the independent inspection, the NRC needs to dispose of the film developing chemicals prior to moving the van from the site.
Two 30 amp, 110 volt circuits are required for operation of the van.
b.
The van will contain PT and MT approve materials. The team will need two rolls of your chemically approved tape and two approved markers for identifying welds and marking weld areas.
c.
It will be necessary for you to remove the paint, rust or other mate-rial that could interfere with PT or MT on the selected welds. Also, we will need scaffolding erected and insulation removed for access.
2.
Administrative Information a.
The radiation source will be a nominal 100 curie IR-192 source. This source is licensed by NRC, but owned by the NRC contractor, b.
The names of the NRC and contractor NDE personnel will be supplied to you by Region I.
Clearance for these personnel is necessary.
7 Attachment B (Continued) c.
We request that you hold a mini-radiation safety training course for the NRC NDE personnel. This course should familiarize the personnel with your facility and procedures and should not exceed 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> in
- length, d.
A camera site pass will be needed for a Canon AE-1, 35 mm, camera, Serial No. 1969401.
e.
The NDE personnel will be using 5 watt Motorola radios on the site; the frequency used by the NRC is 165.6625 MHz.
O
SCOPE OF INSPECTION ATTACHMENT C The NDE van team will perform the following examinations and inspections as appropriate:
Radiography:
Pipe butt and socket welds and other appropriate pressure boundary components.
Ultrasonics:
Flaw detection and material thickness measurements, as appropriate, of piping, welds, structural components, vessels, heat exchangers, balts and other equip-ment.
Liquid Penetrant:
Piping system cc:.iponents and structural elements.
Magnetic Particle Piping system components and structural elements.
Hardness Testing:
All of the previously listed components.
Windsor Probe:
Safety related concrete.
Delta Ferrite Indications (Severn Gage):
Stainless steel welds.
Alloy Analysis:
Selected metallic components will have confirmatory chemical analysis performed.
Visual Examinations:
Weld quality and configuration verification of piping and structural systems.
Quality Racords Review:
Welding documentation, materials and personnel certification, NDE records to include radiographs.
I