ML19340D725
| ML19340D725 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 10/30/1980 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Burstein S WISCONSIN ELECTRIC POWER CO. |
| References | |
| NUDOCS 8101050225 | |
| Download: ML19340D725 (2) | |
Text
'o UNITED STATES j
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NUCLEAR REGULATORY COMMISSION l kl l'
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799 ROOSEVELT ROAD e"
GLEN ELLYN. ILLINOls 60137 OCT 3 0m Those on Attached Address Listing:
This IE Information Notice No. 80-38 is forwarded to provide a noti-fication of a potential source of degradation that might occur in a safety related component over long term operation. No specific action or written response is required at this time.
If you have any questions related to this matter, please contact this office.
Sincerely, l
a%Y 0-mes G. Ke Director
Enclosure:
IE Information Notice No. 80-38 cc w/ enc 1:
Mr. D. W. Kane, Sargent & Lundy Reproduction Unit NRC 20b 81010501 l'
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Rill's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (BWR's and PWR's)
Docket No. 50-266
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Docket No. 50-301 Wisconsin Electric Power Company ATTN:
Mr. Sol Burstein Executive Vice President Power Plants 231 West Michigan Milwaukee, WI 53201 cc w/ enc 1:
Mr. G. A. Reed, Plant Local PDR Manager NSIC Central Files TIC Director, NRR/DPM Sandra A. Bast, Lakeshore Director, NRR/ DOR Citizens for Safe Energy Timothy Colburn, ORB /NRR Mr. John J. Duffy, Chief AE0D Boiler Inspector p sident Inspector, RIII Mr. Peter Anderson, Wisconsin's M DR Environmental Decade Docket No. 50-305 Wisconsin Public Service Corporation ATTN:
Mr. E. R. Mathews Vice President Power Supply and Engineering P. O. Box 1200 Green Bay, WI 54305 cc w/ enc 1:
D. C. Hintz, Plant AE0D Superintendent Resident Inspector, RIII Mr. W. Sayles, Chief PDR Engineer Local PDR Central Files NSIC Director, NRR/DPM TIC Director, NRR/ DOR Mr. John J. Duffy,-Chief Boiler Inspector i
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SSINS No.:
6835 Accession No.:
UNITED STATES 8008220180 NUCLEAR REGULATORY COMMISSION IN-80-38 OFFICE OF INSPECTION ANC ENFORCEMENT C
WASdINGTON, D.C.
20555 Dctober 30, 1980 IE Information Notice No. 80-38:
CRACKING IN CHARGING PUMP CASING CLADDING Description of Circumstances:
In January 1980 Commonwealth Edison Company (CECO) reported to the NRC that a radiographic examination had revealed crack indications in the cladding on the suction end plate of the 1A charging pump at Zion Unit 1.
This cen-trifugal charging pump 1A is one of two pumps installed in Zion Unit 1 for high head safety injection of borated water to the reactor loops.
These pumps are additionally utilized as charging pumps during normal operation.
ASME Section XI inservice inspection rules referenced in the plant technical specification requires pump examination only once during the 10 year service interval and this pump had been in service about 7 years.
The pumps are 2-1/2 inch, 11 stage, Type IJ manufactured by the Pacific Pumps Division of Dresser Industries.
The pump casing end assembly in the area of interest, Figure 1, consists of a suction end plate of A515 grade 60 carbon steel plate welded to the casing barrel forging of A266 class 1 carbon steel using an Inconel weldment. The entire inner surface is c b d with type 308 stainless steel applied by submerged arc welding.
An in-situ ultrasonic examination conducted in late April confirmed clad cracking indications at the barrel case to.end plate inner radius for approximately 330 degrees around the circumference and that the cracking possibly extended into the pump base material in the bottom 180 degrees of the assembly.
A review of the origiral radiographs revealed crack like indications in the clad overlay, however, not to the extent observed during this examination.
Subsequently, the entire suction end of the pump was removed and cross sections metallographically examined to further evaluate the nature and extent of the cracking.
It was determined that initiation and propagation of the clad cracks probably resulted from stress concentration and dilution effects in the initial i
corner bead pass due to the difficult access and bead sequencing required by the fairly sharp corner geometry.
Extension of the cracks at the base metal-I clad interface ranged to a depth of 1/16 inch maximum in the 1-1/2 inch thick base material.
These crack tip areas were well blunted and slightly cavitated from corrosion effects due lengthy exposure to the localized boric acid attack.
Examination of the crack morphology revealed that the clad cracking essentially arrested at the base metal-clad interface and that base metal corrosion progres-sed at a relatively slow rate.
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The 1A charging pump was replaced with a new pump provided with a casing con-structed entirely of stainless steel. The licensee is_ currently develeping improved NDE procedures for examination of the three remaining pumps at the next refueling outage.
Further, the licensee and pump manufacturer are developing repair procedures in the event cracks are discovered in the remaining pumps.
IN-80-38 October 30, 1980 Page 2 of 2 A corrosion evaluation provided CECO by Westinghouse indicates the corrosion rate of carbon steel subject to environmental conditions typical of the installed pumps is on the order of 2-1/2 to 4 mils per month.
Additionally, a stress analysis of the pump casing by the manufacturer using ASME Section III, Subsec-tion NC rules, indicates that at design conditions a flaw with depth of 0.763 inches could be. tolerated.
Based on the available information no immediate safety concern is indicated.
However, the observed conditions reveal a potential source of pump degradation over long term operations. Therefore, to assure maximum availability, it appears prudent to perform a nondestructive examination of this pump type at the earliest practical time during the first code required in-service inspection interval and if cracking is confirmed, take appropriate corrective actions per the rules of ASME Section XI BP&V Code.
This Information Notice is provided as a notificaton of a potential source of.
degradation of a safety related component that is still under review by the NRC staff.
It is expected that recipients will review the information for possible applicability to their facility.
No specific action or response is requested at this time.
If you have any questions regarding this matter, please contract the director of the appropriate NRC Regional Office.
Enclosure:
Figure 1 I
I
IN 80-38 October 30, 1980 l
RECENTLY ISSUED IE INFORMATION NOTICES
~
Information Date of Notice No.
Subject Issue Issued to 80-37 Containment cooler leaks 10/24/80 All nuclear power and reactor cavity facilities holding flooding at Indian Point power reactor OLs Unit 2 or cps 80-36 Failure of Steam 10/10/80 All nuclear power i
Generator Support Bolting reactor facilities j
holding power reactor OLs or cps 80-35 Leaking and dislodged 10/10/80 All categories G and Iodine-124 implant seeds G1 medical licensees 80-34 Boron dilution of reactor 9/26/80 All pressurized water coolant during steam reactor facilities generator decontamination holding power reactor OLs i
i 80-33 Determination of teletherapy 9/15/80 All teletherapy timer accuracy (G3) licensees i
80-32 Clarification of certain 8/12/80 All NRC and agreement requirements for Exclu-state licensees sive-use shipments of radioactive materials 80-31 Maloperation of Gould-8/27/80 All light water reactor Brown Boveri Type 480 facilities holding OLs volt type K-600S and or cps K-DON 6005 circuit breakers 80-30 Potential for unaccept-8/19/80 All boiling water reactor able interaction between facilities holding power the control rod drive scram reactor OLs or cps.
function and non-essential control air at certain GE BWR facilities 80-29 Broken studs on Terry 8/7/80 All light water reactor turbine steam inlet facilities holding flange power reactor Ols or cps
- I
- Operating Licenses or Construction Permits
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J RIII'S CORPORATE ADDRESSES FOR OPERATING LICEl' SEES AND CONSTRUCTION PERMIT HOLDERS (BWR's and PWR's)
Docket No. 50-315 Docket No. 50-316 American Electric Power Service Corporation Indiana and Michigan Powe-Company ATTN:
Mr. John E. Dolan Vice Chairman Engineering and Construction l
2 Broadway l
New York, NY 10004 cc w/ encl:
Mr. D. V. Shaller, Plant Manager Central Files Director, NER/DPM Director, NRR/ DOR AEOD Resident Inspector, RIII PDR Local PDR NSIC TIC Ronald Callen, Michigan Public Service Corporation
r RIII's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDEPS (BWR's and PWR's)
Docket Nos. 50-10, 50-237, 50-249; 50-254, 50-265; 50-295, 50-304; 50-373, 50-374; 50-454, 50-455; 50-456 and 50-457 Commonwealth Edison Company ATTN:
Mr. Cordell Reed, Vice Picsident Post Office Box-767 Chicago, IL 60690 cc w/ent1:
Mr. J. S. Able, Director Mr. Gunner Sorensen, Site of Nuclear Licensing Project Superintendent Mr. D. J. Scott, Station Mr. R. Cosaro, Project Superintendent Superintendent Mr. N. Kalivianakis, Mr. J. F. Gudac, Station Station Superintendent Superintendent Mr. K. Graesser, Station Central Files Superintendent Director, NRR/DPM Mr. L. J. Burke, Site Director, NRR/ DOR Construction Superintendent AEOD Mr. T. E. Quaka, Quality Resident Inspectors, RIII Assurance Supervisor PDR Mr. R. H. Holyoak, Station Local PDR Superintendent NSIC Mr. B. B. Stephenson, TIC Project Manager Mr. Dean Hansell, Office of Mr. V. I. Schlosser, Assistant Attorney General Project Manager Myron M. Cherry, Chicago Mr. R. E. Querio, Station Superintendent l
Docket No. 50-358 Cincinnati Gas and Electric Company l
ATTN:
Mr. Earl A. Borgmann Senior Vice President Engineering Services l
and Electric Production 139 East 4th Street Cincinnati, OH 45201 cc w/ enc 1:
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Mr. J. R. Schott, Plant Local PDR Superintendent NSIC Central Files TIC Director, NRR/DPM Harold W. Kohn, Power Director, NRR/ DOR Siting Commission AEOD Citizens Against a Radioactive Resident Inspector, RIII Environment PDR Helen W. Evans, State of Ohio i
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RIII's CORPORATE ADDRESSES FOR OPERATING LTCENSEES AND CONSTRUCTION PERMIT HOLDERS (BWR's and PWR's)
Docket No. 50-440 Docket No. 50-441 The Cleveland Electric Illuminating Company ATTN:
Mr. Dalwyn R. Davidson Vice President - Engineering P. O. Box 5000.
Cleveland, OH 44101 cc w/ encl:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Mr. Daniel D. Wilt, Attorney Helen Evans, State of Ohio Docket No. 50-155 Docket No. 50-255 Consumers Power Company ATTN:
Mr. R. B. DeWitt Vice President Nuclear Operations 212 West Michigan Avenue Jackson, MI 49201 cc w/ encl:
Mr. D. P. Hoffman, Nuclear Resident Inspectors, LIII Licensing Administrator PDR Mr. C. J. Hartman, local PDR Plant Superintendent NSIC Mr. R. W. Montross, Manager TIC Central Files Ronald Callen, Michigan Director, NRR/DPM Public Service Commission Director, NRR/ DOR Myron M. Cherry, Chicago i
AEOD i
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RITI's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (BWF's and PWR's)
Docket No. 50-329 Docket No. 50-330 Consumers Power Company ATTN:
Mr. James W. Cook Vice Presiden.
Midland Project 1945 West Parnall Road Jackson, MI 49201 cc w/ encl:
l Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Ronald Callen, Michigan Public Service Commission Myron M. Cherry, Chicago Docket No. 50-409 Dairyland Power Cooperative ATIN:
Mr. F. W. Linder General Manager 2615 East Avenue - South La Crosse, WI 54601 cc w/ encl:
Mr. R. E. Shimshak, Plant Superintendent Central Files Director, NRR/DPM Director, NRR/ DOR AEOD Resident Inspector, RIII PDR Local PDR NSIC l
TIC Mr. John Duffy, Chief
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Boiler _ Inspector l
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RlX1's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (BWR's and PWR's)
Docket No. 50-341 The Detroit Edison Company ATTN:
Mr. Edward Hines, Assistant Vice President and Manager Quality Assurance 2000 Second Avenue Detroit, MI 48226 cc w/ enc 1:
Central Files Director, NRR/DPM Director, NRR/ DOR AEOD Resident Inspector, RIII PDR Local PDR NSIC TIC Ronald Callen, Michigan Public Service Commission Eugene B. Thomas, Jr.,
Attorney Docket No. 50-461 Docket No. 50-462 Illinois Power Company ATTN:
Mr. W. C. Gerstner Executive Vice President 500 South 27th Street Decatur, IL 62525 cc w/ enc 1:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR l
NSIC TIC Mr. Dean Hansell, Office of l
Assistant Attorney General l
Mr. Gary N. Wright, Chief I
Division of Nuclear Safety
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RIII's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (BWR's and PWR's)
Docket No. 50-331 Iowa Electric Light and Power Company ATTN:
Mr. Duane Arnold President IE Towers ed r apids IE'52406 cc w/ enc 1:
i D. Mineck, Chief Engineer Central Files Director, NRR/DPM Director, NRR/ DOR AEOD Resident Inspector, RIII PDR Local PDR NSIC TIC Docket No. 50-367 Northern Indiana Public Service Company ATTN:
Mr. Eugene M. Shorb Senior Vice President 5265 Hohman Avenue Hammond, IN 46325 cc w/ enc 1:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Mr. Dean Hansell, Office of Assistant Attorney General 1
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RITI's CORPORATE ALDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT HOLDERS (B'4R's and PWR's) l i
i Docket No. 50-263 Docket No. 50-282 Docket No. 50-306 Northern States Power Company ATTN:
Mr. Dennis E. Gilberts Vice President Power Production and System Operation 414 Nicollet Mall Minneapolis, MN 55401 cc w/ enc 1:
Mr. W. A. Shamla, Resident Inspectors, RIII Plant Manager PDR j
Mr. F. P. Tierney, Jr.,
Local PDR j
Plant Manager NSIC Central Files TIC Director, NRR/DPM John W. Ferman, Ph.D.,
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Director, NRR/ DOR Nuclear Engineer, MPCA AEOD Docket No. 50-546 Docket No. 50-547 Public Service of Indiana ATTN:
Mr. S. W. Shields Senior Vice President Nuclear Division Post Office Box 190 New Washington, IN 47162 cc w/ enc 1:
Mr. Steve J. Brewer, Nuclear TIC Safety and Licensing Supervisor LeBoeuf, Lamb, Leiby & MacRae Central Files Mr. Dave Martin, Office of the Director, NRR/DPM Attorney General Director, NRR/ DOR Mr. John R. Galloway, Staff PDR Director, Environment, Energy Local PDR and Natural Resources Subcommittee NSIC l
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RIII's CORPORATE ADDRESSES FOR OPERATING LICENSEES AND CONSTRUCTION PERMIT H (BWR's and Ph'R's)
Docket No. 50-346 Toledo Edison Company ATTN:
Mr. Richard P. Crouse Vice. resident Nuclear Edison Plaza 300 Madison Avenue Toledo, OH 43652 cc w/ enc 1:
Mr. T. Murray, Station Superintendent Central Files Director, NRR/DPM Director, NRR/ DOR AEOD Resident Inspector, RIII PDR Local PDR NSIC TIC Harold W. Kohn, Power Siting Commission Helen W. Evans, State of Ohio Docket No. 50-483 Docket No. 50-486 Union Electric Company l
ATTN:
Mr. John K. Bryan Vice President - Nuclear P
. Box 149
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l 6t Louis, MO 63166 cc w/ encl:
Mr. W. H. Weber, Manager, Nuclear Construction Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC l
TIC Region I & IV Ms. K. Drey Mr. Ronald Fluegge, Utility Division, Missouri Public Service Commission