ML18095A715
| ML18095A715 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/23/1991 |
| From: | Stone J Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9102040026 | |
| Download: ML18095A715 (18) | |
Text
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I UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 January 23, 1991 Docket Nos. 50-272/311 LICENSEE:
Public Service Electric and Gas Company Salem Generating Station, Units 1 and 2 STATUS OF SERVICE WATER SYSTEM UPGRADE FACILITY:
SUBJECT:
I.
BACKGROIJND On January 4, 1991, 11:00 a.m., at One White Flint North, Room 128-11, a meeting was held between the NRC staff and representatives of the Public Service Electric and Gas Company {PSE&G) to discuss the status of the -
service water system at Salem Generating Station, Units 1 and-?.
The service water system at Salem 1 and 2 is a once through syste!11 using water from the Delaware River.
The system provides cooling for both safety and non;,,,safety related equipment.
The system is exposed to a harsh water environment consisting of high chloride concentration swings, high biological activity, silt, and industrial pollutants. The original piping is carbon steel with a cement inner lining. The two Salem units have experienced numerous leaks in the service water system since beginning operation.
In 1987, Public Service Electric and Gas Company formed a task group to develop a plan to upgrade the service water system.
The decision was made to replace the carbon steel piping with a 6% molybdenum~ austenitic stainless steel. This meeting provided a status of the service water upgrade project and feedback on conditions found in the original pipe as it is replaced.
I I.
DlSCYSS-I-ON-The current status of the program is that about 43% of the nuclear project plan has been completed.
This includes retubing of heat exchangers~ replacement Qf strainers and valves, and replacement of over 7000 linear feet of pipe. The current schedule calls for completion of the nuclear portion of the project in 1994.
At that time over 90% of the 18,000 linear feet of safety related piping will have been replaced.
The enclosed handout details the status of the project as well as provides the scheduled upgrades to be completed during the 9th and 10th refueling outages at Salem 1 and the 6th refueling outage at Salem 2.
In addition, PSE&G presented samples of piping sections that graphically demonstrated the pitting corrosion attacks being experienced.
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- Also qiscussed was the reporting of service water system leaks by PSE&G.
PSE&G is currently reporting service water through wall leaks under the requirements of 10 CFR 50.72, Section (b)(ii)(B), as a condition outside the design basis of the plant.
The staff agreed to look into this issue.
A copy of the attendance list is enclosed.
Enclosures:
- 1. Handout
- 2.
Attendance List cc w/enclosures:
Licensee and Service List
~c:~
James C. Stone, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
cc:
Mark J. Wetterhahn, Esquire Bishop, Cook, Purcell & Reynolds 1400 L Street NW Washington, DC 20005-3502 Richard Fryling, Jr., Esquire Law Department - Tower SE 80 Park Place Newark, NJ 07101 Mr. L. K. Miller General Manager - Salem Operations Salem Generating Station P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. S. LaBruna Vice President - Nuclear Operations Nuclear Department P.O. Box 236 Hancocks Bridge, New Jersey 08038 Mr. Thomas P. Johnson, Senior Resident Inspector Salem Generating Station U.S. Nuclear Regulatory Commission Drawer I Hancocks Bridge, NJ 08038 Dr. Jill Lipoti, Asst. Director Radiation Protection Programs NJ Department of Environmental Protection CN 415 Trenton, NJ 08625-0415 Maryland People's Counsel American Building, 9th Floor 231 Ea~t Baltimore Street Baltimore, Maryland 21202 Mr. J. T. Robb, Director Joint Owners Affairs Philadelphia Electric Company 955 Chesterbrook Blvd., 51A~13 Wayne, PA 19087 Mr. Steven E. Miltenberger Vice President and Chief Nuclear Officer Public Service Electric and Gas Company Post Office Box 236 Hancocks Bridge, New Jersey 08038 Richard B. McGlynn, Commission Department of Public Utilities State of New Jersey 101 Commerce Street Newark, NJ 07102 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King pf Prussia, PA 19406 Lower Alloways Creek Township c/o Mary 0. Henderson, Clerk Municipal Building, P.O. Box 157 Hanco~ks Bridge, NJ 08038 Mr. Bruce A. Preston, Manager Licensing and Regulation Nuclear Department P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. David Wersan Assistant Consumer Advocate Office of Consumer Advocate 1425 Strawberry Square Harrisburg, PA 17120 Mr. Scott B. Ungerer MGR. - Joint Generation Projects Atlantic Electric Company P.O. Box 1500 1199 Black Horse Pike Pleasantville, NJ 08232 Mr. Jack Urban General Manager, Fuels Department Delmarva Power & Light Company 800 King Street Wilmington, DE 19899 Public Service Commission of Maryland Engineering Division ATTN:
- Chief Engineer 231 E. Baltimore Street Baltimore, MD 21202-3486
ENCLOSURE 1 STATUS OF SERVICE WATER PIPING REPLACEMENT PROJECT AT SALEM GENERATING STATION PSE&G ATTENDEES:
ONE WHITE FLINT NORTH ROCKVILLE, MARYLAND JANUARY 41 1991 S. E. MIL TEN BERGER, VICE PRESIDENT AND CHIEF NUCLEAR OFFICER W. STRAUBMULLER, SERVICE WATER PIPING, REPLACEMENT PROJECT MANAGER J. A. ROWEY, PROJECT ENGINEER, SERVICE WATER PROJECT A. T. BROWN, PRINCIPAL ENGINEER - NUCLEAR LICENSING
STATUS OF SERVICE WATER PIPING REPLACEMENT PROJECT AT SALEM GENERATING STATION AGENDA INTRODUCTION S. E. MILTENBERGER SERVICE WATER PIPING PROJECT W. STRAUBMULLER BACKGROUND PROBLEMS ACTIONS TAKEN ACCOMPLISHMENTS SCHEDULES MONITORING PROGRAM
SUMMARY
S. E. MILTENBERGER
~-
BACKGROUND ONCE THROUGH COOLING SYSTEM WHICH PROVIDES COOLING FOR SAFETY AND NON-SAFETY RELATED EQUIPMENT BOTH UNITS HAVE A TOTAL OF 117 HEAT EXCHANGERS - 88 ARE SAFETY RELATED THERE IS APPROXIMATELY 24,000 LINEAR FEET OF PIPING -
APPROXIMATELY 18,000 FT. IS SAFETY RELATED WATER CHEMISTRY - HARSH BRACKISH (HIGH CHLORIDE SWINGS)
(LOW 100 PPM TO HIGH 20,000 PPM)
AVG. 3800 PPM HIGH BIOLOGICAL ACTIVITY (MACRO & MICRO)
SILT ENTRAINMENT INDUSTRIAL POLLUTANTS WATER TREATMENT - CONTINUOUS SODIUM HYPOCHLORITE INJECTION
PROBLEMS EXPERIENCED PIPING & EQUIPMENT LOCALIZED CORROSION AND EROSION PROBLEMS CAUSED BY:
AGGRESSIVE WATER CHEMISTRY ABRASIVE SILT ENTRAINMENT INDUSTRIAL POLLUTANTS MACRO-MICROBIOLOGICAL ACTIVITY TEMPERATURE EXTREMES FROM 320FTO 9QOF CAVITATION AT CONTROL VALVES ONE FAILURE DUE TO EXTERNAL CORROSION CAUSED BY:
LEAKING MECHANICAL JOINT ENTRAPMENT OF WATER IN INSULATION NO PROTECTIVE PAINTING ON CARBON STEEL MATERIAL
ACTIONS TAKEN WE ARE COMMllTED TO THE SAFE AND RELIABLE OPERATION OF OUR NUCLEAR PLANTS MAJOR COMMITMENT BY PSE&G MANPOWER DOLLARS (100 MILLION PLUS)
INVESTIGATED VARIOUS OPTIONS & MATERIALS WITH OUTSIDE SPECIALISTS (MPR & SWEC) OTHER UTILITIES AND INDUSTRIES AFTER EXTENSIVE TESTING SELECTED - 6% MOLY, TITANIUM &
NICKEL ALUM. BRONZE AS REPLACEMENT MATERIALS DEVELOPED A LONG TERM PLAN TO REPLACE AND UPGRADE MATERIAL AND EQUIPMENT (SCHEDULED TO COMPLETE 1994)
ACCOMPLISHMENTS TO DATE 90% OF ALL HEAT EXCHANGERS HAVE BEEN RETUBED OR REPLACED WITH UPGRADED MATERIALS (SoA>> MOLY OR TITANIUM)
SERVICE WATER PUMP DISCHARGE STRAINERS HAVE BEEN REPLACED WITH HI-PERFORMANCE KINNEY STRAINERS (NI-ALUM-BRONZE) 14 SAFETY RELATED MOTOR OPERATED RUBBER SEATED BUTTERFLY VALVES HAVE BEEN REPLACED WITH HI-PERFORMANCE JAMESBURY VALVES {Nl-ALUM-BRONZE-TEFZEL SEAT)
REPLACED AND IMPLEMENTED A RELIABLE CONTINUOUS INJECTION CHLORINATION SYSTEM (REDUCES MACRO/MICRO FOULING)
REPLACED OVER 7,000 LINEAR FEET OF SAFETY RELATED PIPING (6% MOLY)
ELIMINATION OF SOCKET WELDS IN SMALL BORE PIPING TO REDUCE CREVICE CORROSION DEVELOPED INNOVATIVE WELDING AND PIPE BEVELING TECHNIQUES INDUSTRY LEADER ONE OF THE FIRST UTILITIES TO PURSUE MATERIAL OPTIONS AND PERFORM EXPERIMENTATION ACTIVELY INVOLVED WITH EPRI ON THE SERVICE WATER WORKING GROUP COMMITMENT TO MATERIAL REPLACEMENT AND EQUIPMENT UPGRADES ON SERVICE WATER SYSTEMS
ACCOMPLISHMENT
SUMMARY
PROJECT PLAN INCLUDES OVER 90% OF NUCLEAR SAFETY RELATED, LINEAR FOOTAGE APPROXIMATELY~ OF THE NUCLEAR PROJECT PLAN HAS BEEN COMPLETED COMPLETED PIPING INCLUDES~ OF THE TOTAL LINEAR FOOTAGE IN CONTAINMENT
SCHEDULED UPGRADES & INSPECTIONS 1991 -1992 UNIT #1 *NINTH REFUELING OUTAGE (FEB. 1991)
REPLACE S.W. SUPPLY & RETURN PIPING TO CONTAINMENT FAN COIL UNITS IN 11 & 12 NUCLEAR HEADER VALVES ROOMS CONTROLS SET POINT CHANGES TO REDUCE CAVITATION TIE-IN PHASE I OF PUMP FLOW TEST MEASUREMENT LINE PIPING & EQUIPMENT INSPECTIONS IN SELECTED AREAS OF 11 & 12 NUCLEAR HEADERS CLEANING, INSPECTION & EDDY CURRENT TESTING OF 28 SAFETY RELATED HEAT EXCHANGERS THERMAL TESTING AND INSPECTIONS IN ACCORDANCE WITH 89-13 COMMITMENTS (NON-OUTAGE 1991)
COMPLETE PIPING REPLACEMENT PHASE I - S.W. PIPING SUPPLY & RETURN TO 21-23 CHILLER CONDENSERS PHASE 2 INSTALLATION OF PUMP FLOW TEST MEASUREMENT LINE REPLACEMENT OF S.W. PIPING AND ELIMINATION OF BACKWASH LINE #12 COMPONENT COOLING HEAT EXCHANGER
UNIT #2 *SIXTH REFUELING OUTAGE (DEC. 1991 THRU FEB. 1992)
(10 YEAR ISi OUTAGE)
REPLACE REMAINING CONTAINMENT FAN COIL UNIT PIPING FROM ELEV.
102' THRU AND INCLUDING THE CONTAINMENT PENETRATION, TO 21 & 22 NUCLEAR HEADER VALVE ROOMS REPLACE 21 NUCLEAR HEADER SUPPLY & RETURN PIPING TO ALL ROOM COOLERS & OIL COOLERS REPLACE SELECTED AREAS OF SERVICE WATER INTAKE STRUCTURE PIPING IN BAY #2 PHASE 3 INSTALLATION AND COMPLETION OF PUMP FLOW TEST MEASUREMENT LINE PIPING & EQUIPMENT INSPECTIONS IN SELECTED AREAS OF 21 & 22 NUCLEAR HEADERS CLEANING, INSPECTION & EDDY CURRENT TESTING OF NUMEROUS SAFETY RELATED HEAT EXCHANGERS THERMAL TESTING AND INSPECTIONS IN ACCORDANCE WITH 89-13 COMMITMENTS
UNIT #1 - TENTH REFUELING OUTAGE {APRIL-JUNE 1992)
REPLACE REMAINING CONTAINMENT FAN COIL UNIT PIPING FROM ELEV.
102 THAU AND INCLUDING THE CONTAINMENT PENETRATION TO 11 & 12 NUCLEAR HEADER VALVE ROOMS REPLACE 11 NUCLEAR HEADER SUPPLY & RETURN PIPING TO ALL ROOM COOLERS & OIL COOLERS REPLACE SELECTED AREAS OF SERVICE WATER INTAKE STRUCTURE PIPING IN BAYS 1 & 3 PIPING EQUIPM~NT INSPECTIONS IN SELECTED AREAS OF 11 & 12 NUCLEAR HEADERS INSPECTIONS & TESTING IN ACCORDANCE WITH 89-13 COMMITMENTS NOTE: (APPROXIMATELY 6,000 LINEAR FEET OF PIPING TO BE REPLACED)
SUMMARY
BY THE END OF THE SALEM UNIT 1 - TENTH REFUELING.
OUTAGE (18 MONTHS FROM NOW)~ OF THE NUCLEAR PROJECT PLAN WILL HAVE BEEN COMPLETED INCLUDING 100% OF CONTAINMENT PIPING.
MONITORING OF SYSTEM ACTIVITY & UPGRADES INSPECTIONS OF PIPING & EQUIPMENT IN SELECTED AREAS OF THE SYSTEM ARE PERFORMED EVERY REFUELING OUTAGE EQUIPMENT OPERATORS VISUALLY OBSERVE MATERIAL AND EQUIPMENT CONDITIONS AND OPERATIONS DAILY NOTE:
PROJECT PRIORITIES MAY CHANGE OR EXPAND DUE TO THE RESULTS OF THESE INSPECTIONS AND VISUAL OBSERVATIONS SAMPLE TEST SPOOLS REMAIN IN OPERATION AND ARE INSPECTED ON A 12TO 18 MONTH CYCLE AND THE RESULTS DOCUMENTED RANDOM NOE (R.T.) PERFORMED DURING NEW REPLACEMENT PROJECTS USED AS BASELINE DATAAND RANDOMLY (RrD) EVERY OUTAGE TO MONITOR PERFORMANCE
SERVICE WATER PROJECT
SUMMARY
AGGRESSIVE PROJECT PLAN INCLUDES OVER~
OF NUCLEAR, SAFETY RELATED, LINEAR FOOTAGE TO DATE APPROXIMATELY~ OF THE NUCLEAR PROJECT PLAN HAS BEEN COMPLETED THE COMPLETED PIPING INCLUDES~ OF THE TOTAL LINEAR FOOTAGE IN CONTAINMENT BY THE END OF THE SALEM UNIT 1 - TENTH REFUELING OUTAGE (18 MONTHS FROM NOW)~ OF THE NUCLEAR PROJECT PLAN WILL HAVE BEEN COMPLETED INCLUDING 1()()% OF CONTAINMENT PIPING INDUSTRY LEADER IN SERVICE WATER PIPING REPLACEMENT AND MATERIAL UPGRADES
NAME Jim Stone Ken Buddenbohn Ron Marks 1/4/91 Meeting Philip J. Duca Jr.*
Ted Robb Raymond Brown John Rovey Warren Straubmuller Steve Miltenberger T. Murley W. Russe 11 F. Miraglia, Jr.
J. Partlow W. Butler ATTENDEES Salem Service Water TITLE/ORGANIZATION Salem PM/NRR Engineer/Delmarva Power Sr. Engr/Atlantic Electric Salem Site Rep/Delmarva Power Dir-J.O. Affairs/Phil. Electric Prine. Eng-Licensing/PSE&G Project Eng/PSE&G Project Manager VP&CNO/PSE&G Director, NRR Assoc. Director, Insp. & Tech. Assess Deputy Director, NRR Assoc. Director, DRP Director, PDI-2
- Also discussed was the reporting of service water system leaks by PSE&G.
PSE&G is currently reporting service water through wall leaks under the requirements of 10 GFR 50.72, Section (b)(ii)(B), as a condition outside the design basis of the plant.
The staff agreed to look into this issue.
A copy of the attendance list is enclosed.
Enclosure:
- 1. Handout
- 2.
Attendance List cc w/enclosures:
Licensee and Service List DISTRIBUTION w/enclosures:
Docket Fi1e 50-272/311 NRG & Local PDRs TMurley FMiraglia JPartlow WRussell PDI-2 Reading SVarga EGreenman (Acting)
WButler JS tone JRaleigh MO'Brien (2)
OGG EJordan, 3701 AGRS (10)
JGaldwell, 17G-21
[MEETING
SUMMARY
1/4/91 SA]
n-2/PM JSTONE:tlc t !z'"Z91
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/SI James G. Stone, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation PDl-2/D 1 0 WBUTLER u/
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