ML19269F478
| ML19269F478 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 11/01/1979 |
| From: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-79-14, NUDOCS 7912210109 | |
| Download: ML19269F478 (5) | |
Text
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C O N Ni!CTIC U T YANKEE AT O MIC POWER COMPANY BERLIN. C O N N E C TIC U T P.O. BOX 270 HARTFORD. CONNECTICUT 00101 Taksame=a 203 606 6911 November 1, 1979 Docket No. 50-213 lir. Boyce H. Grier, Director Region I Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406
References:
(1)
B. H. Grier letter to W. G. Counsil dated July 2, 1979, transmitting I&E Bulletin No. 79-14.
(2)
B. H. Grier letter to W. G. Counsil dated July 14, 1979, transmitting I&E Bulletin No. 79-14, Revision 1.
(3)
B. H. Grier letter to W. G. Counsil dated August 15, 1979, transmitting I&E Bulletin No. 79-14, Supplement 1.
(4)
B. H. Grier letter to W. G. Counsil dated September 7,1979, transmitting I&E Bulletin No. 79-14, Supplement 2.
(5)
W. G. Counsil letter to B. H. Grier dated August 1,1979.
(6)
W. G. Counsil letter to B. H. Grier dated August 31, 1979.
Gentlemen:
Haddam Neck Plant Seismic Analysis for As-Built Safety-Related Piping Systems I&E Bulletin No. 79-14, Reference (1), as amended by References (2), (3), and (4),
requested that Connecticut Yankee Atomic Potcer Company (CYAPCO) initiate a program to verify the accuracy of input information for the seismic analyses of safety-related piping.
Item (1) of Reference (1) requested that for each safety-related system at the Haddam Neck Plant, CYAPC0 submit a list of design documents which were sources of input information for the seismic analyses and describe the input information contained in each document.
This information was provided in Reference (5).
Item (2) of Reference (1) requested that CYAPC0 inspect specific portions of normally accessible safety-related systems for conformance to the seismic analysis input information set forth in the design documents specified in Reference (5).
This information was forwarded in Reference (6).
Item (3) of Reference (1) requested that CYAPC0 inspect all other normally accessible safety-related systems for conformance to the seismic analysis input information specified in Reference (5). Accordingly, the following information is submitted in response to this request.
2166 257 h
791221o 1.69
a Attached is a list of nonconformance reports generated, subsequent to the information submitted in Reference (6), for which system repairs were recommended af ter engineering review.
In general, inspections have revealed as-built conditions do not differ significantly from original design. All discrepancies have been evaluated in accordance with Item (2) of Reference (3) and with three exceptions (see attach-ment), were determined not to compromise the operability of any safety-related system.
Analytical engineering evaluation per Item (2) of Reference (3) is not complete on approximately ten percent of the discrepancies.
Should this evaluation indicate that system operability is in jeopardy, appropriate action will be taken in accordance with the plant technical specifications.
Portions of systems in those areas around the ion exchange building, CVC regenerative heat exchangers, seal water filter, and volume control tank were not inspected due to high radiation (excess of 5 Rem / hour). This represents approximately two percent of the safety-related systems.
In most instances, these lines are short direct runs to vessels in the above-mentioned areas with deadweight support or no support indicated on the design documents.
As requested in Reference (4), inspection of supports on safety-related systems under Item (3) of Reference (1) obstructed by thermal insulation will be completed during the 1980 refueling outage.
CYAPC0 trusts that this information is responsive to NRC Staff requests and Concerns.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY
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W. G. Counsil Vice President Attachment 2166 itS8 d
e
DOCKET NO. 50-213 ATTAC10iENT HADDAM NECK PLANT RESPONSE TO I&E BULLETIN NO. 79-14 2166 259 NOVDiBER, 1979
I&E BULLETIN NO. 79-14 NONCONFORMANCE REPORTS DOES/DOES NOT NCR NO.
SYSTEM DESCRIPTION DISPOSITION STATUS AFFECT SYSTEM LER OPERABILITY No.
Y 79-165-1 IIPSI Excess Gap on Earthquake Shim to Comply Complete Does Not N/A Restraint RWL-ER-26 With Design Drawing
-2 CVC Deadweight Supports Not Install Supports Complete Does Not N/A Installed
-3 CVC Support PS-5 Not Installed System Reanalyzed Incomplete
- Does Not N/A Per Drawing By Engineering Awaiting New Support to be Design Modified
-4 LPSI/IIPSI As-Built Deadweight Design and Install Complete Does Not N/A Support Structure New Support Exceeds Code Allowable Design Stress
-5 RilR Excess Gap on Earthquake Shim to Comply Incomplete
- Does Not N/A Restraints AC-ER-27, With DeLign
-28, -29, and -30 Drawing
-6 RilR Spring Ibnger W-AC-Illl Design and Install Incomplete
- Does Not N/A is not Installed New Support Awaiting I\\3 Delivery of
~{[
Spring Ch
-7 LPSI Modify Support to Modify Support Complete Does Not N/A rNJ Comply with Analysis Ch CZ)
-8 Feedwater Broken Pipe Clamp On Replace Clamp Complete Does Not N/A llanger WGF-llB
- Completion Date - January 1, 1980
I&E BULLETIN NO. 79-14 NONCONFORMANCE REPORTS PAGE 2 DOES/DOES NOT NCR NO.
SYSTEM DESCRIPTION DISPOSITION STATUS AFFECT SYSTEM LER OPERABILITY No.
Y 79-165-9 Annulus Structural Connections Inerall Connections Complete Does Not N/A Piping Not Installed Per Design Document
-10 LPSI Welded Attachments System Reanalyzed Complete Does Not N/A Cause Local Over-By Engineering --
stressing in Run Pipe Support to be Modified
-11 IIPSI Ilanger W-RWL-Ril10 is Adjust llanger Incomplete
- Does Not N/A Loose rs)
-12 Service Earthquake Restraints Design and Install Complete Does 79-11/lT Water Missing New Restraints and IP
--a Os C7s
-13 CVC Earthquake Restraints Design and Install Complete Does 79-11/lT Missing py CIs
-14 IIPSI Earthquake Restraints Design and Install Complete Does 79-11/lT Missing
- Completion Date - January 1,1980
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