ML20245D630
| ML20245D630 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 09/09/1988 |
| From: | Murphy W VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| FVY-88-74, IEB-88-005, IEB-88-5, NUDOCS 8809140151 | |
| Download: ML20245D630 (3) | |
Text
'
1 e
VERMONT YANKEE
' NUCLEAR POWER CORPORATION RD 5, Box 169, Ferry Road, Brattleboro, VT 05301 f,
\\y ENGINEERING OFFICE 1671 WORCESTER ROAD FR AMINGH AM. M ASSACHuSETTS 01701 int Pwo%t st r-e a stoo September 9, 1988 U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Attn:
Document Contrel Desk
References:
a)
License No. DPR-28 (Docket No. 50-271) b)
USNRC Bulletin No. 88-05, NVY 88-073, dated 5/6/88 c)
USNRC Bulletin No. 88-05, Supplement 1. NVY 88-110, dated 6/15/88 d)
USNRC Bulletin No. 88-05, Supplement 2, NVY 88-169, dated 8/?/88
Dear Sir:
Subject Response to NRC Bulletin 88-C', Original and Supplements 1 and 2 s
W-have cc.apleted *ie investigation and testing activities required by the su%,.et documents and h.s a determined that no unacceptable safety-related flanges or fittings from either Piping Supplies, Inc. or West Jersey Manufacturing were purchased and installed by Vermont Yankee or our contractors during the period January 1, 1976 through the present. Vermont Yankee has also completed a review of all purchases from 1976 to present and de*: ermined that no flanges or fittings were procured from any of the intermediary suppliers identified in Reference d).
This review was necessary to identify any flanges or fittings purchased for non-safety applications.
Four 6" 600# welding neck flanges from West Jersey Manufacturing are presently :nstalled in the Scram Discharge Header piping, and one 4" 150s blind flange is presently installed on the High Pressure Coolant Injection Turbine l
Lube Oil Cooler.
These flanges have been tested for hardness using an Equo Tip hasdness tester, and were found to be within the CPRI recommended acceptable range of 137 - 187 BHN, as detailed in Attachment a).
Two 6" 600# welding neck flanges and two 6" 600# blind flanges were found in plant inventory.
These flanges were sent to an off-site testing laboratory for chemical and physical testing, and were found to have acceptable tensile strength and chemistry; these results are reflected in Attachment a).
Vermont Yankee had eight other welding neck flanges (6"-600#) installed in the Scram Discharge Volume piping, however, these were removed by a design change and were destroyed in 1983.
In addition, one 4" 900# welding neck flange and one 4" 900# blind flange were installed in a temporary sp^ol piece used i
during replacement of Reactor Water Cleanup System piping in 1981, but this spool piece has since been removed and destroyed.
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a VERMONT YANKEE NUCLEAR POWER CORPORATION U.S. Nuclear Regulatory Commission September 9, 1988 i
Page 2 Vermont Yankee will maintain the documentation of the analyses that were performed and are outlined on Attachment a).
This file will be maintained until I
this Bulletin subject is closed out by the NRC. Vermont Yankee has also uti-lized the INPO Nuclear Network to disseminate its information to other organiza-tions. The results of Vermont Yankee's investigation and testing has also been transmitted to Nuclear Management and Resources Council (NUMARC) for inclusion in their data base.
This effort required approximately 495 manhours of investigation and testing at an approximate cost to Vermont Yankee of $20,000.
We trust the information provided is responsive to Bulletin 88-05 and Supplements 1 and 2; however, should you have any further questions, please do not hesitate to contact us.
j Very truly yours, l
VERMONT YANKEE NUCLEAR POWER CORPORATION l
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Warren P/ Mur
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Vice President.
Manager of Opera ons
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cc: USNRC Regional Administrator, Region I i
USNRC Resident Incpector, VYNPC
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STATE OF VERMONT)
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WINDHAM COUNTY )
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Then personally appeared before me, Warren P. Murphy, who, being duly sworn, did state that he is Vice President and Manager of Operations of Vermont i
Yankee Nuclear Power Corporation, that he is duly authorized to execute and file the foregoing dy u;n nt in the name and on the behalf of Vermont Yankee Nuclear i
Power Corp SM.
t the statements therein are true to the best if his j
l knowledg belief. (
NOTARY d
1-Diane M. McCue Notary Public i
PUBUC u
My Commission Expires February 10, 1991 l
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fj COUND/
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O ATTACHMENT A Installed Items All items below were procured from Guyon Alloys with certification from West Jersey Manufacturing Company.
In-Situ Hardness Testina Results Measured Equo-Tip BHN Value Size Type Ratina Heat #
Hardness Converted (+131 1.
6" WN 600#
T9774 410 151 2.
6" WN 600#
T9774 424 161 3.
6" WN 600#
T9774 423 160 4
6" WN 600#
T4902 435 170 5.
4" BL 150#
TQ 423 160 Items in Plant Inventory All items below were procured from Guyon Alloys with certification from West Jersey Manufacturing Co.
Samples from all the items were sent to an off-site independent laboratory for analysis.
Measured BHN Chemical Size Tyoe Ratina Heat #
Hardness Analysis 6.
6" WN 600#
T4902 131 Satisfactory 7.
6" WN 603#
T9774 131 Satisfactory 8.
6" BL 600#
509X 134 Satisfactory 9.
6" BL 6002 509X 137 Satisfactory Testina Summary Lab Analysis Sample In-Situ Chemical /
Supplied Heat Hardness Physical (*)
to NUMARC Comments T9774 X
Installed T9774 X
X Analysis results satisfactory T4902 X
Installed T4902 X
X Aralysis results satisfactory TQ X
Installed 509X X
Analysis results i
satisfactory
(*)
VY contracted an independ1nt laboratory to perform analysis and results were comparable to those obtained by NUMARC laboratory consultant.
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