ML18052B326
| ML18052B326 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/17/1987 |
| From: | Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8709240015 | |
| Download: ML18052B326 (17) | |
Text
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consumers Power POWERING llllClllliAN"S PROGRESS General Offices: 1945 West Parnell Road, Jackson, Ml.49201 * (517) 788-163S September 17, 1987 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -
REVISED RESPONSE TO IE BULLETIN 85-03 Kenneth W Berry Director Nuclear Licensing Consumers Power Company's letter of July 31, 1987 transmitted a response to the NRC's June 26, 1987 request for additional information regarding IE Bulletin 85-03, "Motor Operated Valve Common Mode Failures During Plant Transients Due To Improper Switch Settings".
In our response, we committed to revising the listing of High Pressure Safety Injection (HPSI) motor operated valves (MOVs)contained in our original May 15, 1986 response to IE Bulletin 85-03 to include unlisted MOVs, M0-3041, 3045, 3049 and 3052, and to include the revised list within an update to our May 15, 1986 correspondence.
Accordingly, this transmittal supersedes our May 15, 1986 submittal and, in conjunction with our July 31, 1987 correspondence, comprises our response to IE Bulletin 85-03.
Consumers Power Company had committed to providing this u*pdate by September 15, 1987 but due to delays was unable to do so.
We informed the Region III Reactor Projects Section 2A Chief and were granted a two-day extension to our commitment date.
Below are action items a thru e from IE Bulletin 85-03 along with our updated responses.
ITEM a Review and document the design basis for the operation of each valve.
This documentation should include the maximum differential pressure expected during both opening and closing the valve for both normal and abnormal events to the extent that these valve operations and events are included in the existing, approved design basis, (ie, the design basis documented in pertinent licensee submittals such as FSAR analyses and fully approved operating and emergency procedures, etc).
When determining the maximum differential pressure, those single equipment failures and inadvertent equipment operations (such as inadvertent valve closures or openings) that are within the Plant design basis should be assumed.
OC0987-0162-NL02 8709240015 870917 PDR ADOCK 05000255 G
Nuclear Regulatory Commission Palisades Plant Revised Response to ~EB 85-03 September 17, 1987
RESPONSE
. 2 Consumers Power Company (CP) has compiled the data contained in Attachment A to this submittal.
The present motor operated valve (MOV) switch settings for the Palisades Plant were confirmed by Limitorque in 1984, in an effort to enhance information and practices related to setting torque switches.
We are in the process of reconfirming the adequacy of these switch settings. This work will be completed by the upcoming October 1987 Maintenance Outage.
Maximum differential pressures listed in Attachment A were determined by Combustion Engineering (CE) or CP and verified by CP.
In determining the maximum differential pressure, considerations of various system design basis functions were postulated both upstream and downstream of the valve as shown in Attachment A.
ITEM b Using the results from Item a above, establish the correct switch settings.
This shall include a program to review and revise, as necessary, the methods for selecting and setting all switches (ie, torque bypass, position limit, overload) for each valve operation (opening and closing).
If the licensee determines that a valve is inoperable, the licensee shall also make an appropriate justification for continued operation in accordance with the applicable technical specification.
RESPONSE
Thrust calculations were performed using the maximum differential pressure, valve and operator data from field walkdowns and valve and operator data supplied by the vendor.
This effort verified that all operators are adequately sized and capable bf opening/shutting the valves during maximum differential pressure conditions.
Based upon these thrust calculations, a target thrust window was established for each operator's torque switch settings. Sirice September 12, 1985 all torque switch settings have been documented on a controlled drawing.
All changes to switch settings (ie, torque switch, position limit, torque bypass, etc) are evaluated and controlled via our specification change process.
See item c for methods of selecting and setting switches.
ITEM c Individual valve settings shall be changed, as appropriate, to those established in Item b above.
Whether the valve setting is changed or not, the valve will be demonstrated to be operable by testing the valve at the maximum differential pressure determined in Item a above with the exception that testing motor operated valves under conditions simulating a break in the line containing the valve is not required. Otherwise, justification should be prov~ded for any cases where testing with the maximum differential pressure cannot practicably be performed.
This justification should include the alternative to maximum differential pressure testing which will be used to verify the correct settings.
OC0987-0162-NL02
Nuclear Regulatory Commission Palisades Plant Revised Response to IEB 85-03 September 17, 1987 3
Note:
This Bulletin is not intended to establish a requirement for valve testing for the condition simulating a break in the line containing the' valve.
However, to the extent that such valve operation is relied upon in the design basis, a break in the line containing the valve should be considered in the analyses prescribed in Items a and b above.
The resulting switch settings for pipe break conditions should be verified, to the extent practical, by the same methods that would be.used to verify other settings (if any) that are not tested at the maximum differential pressure.*
RESPONSE
Consumers Power has selected Movats, Inc., to perform diagnostic testing of our operators.
"As-found" diagnostic testing of each motor operated valve will be performed to demonstrate the "as-found" operability of the operator.
Following the "as-found" diagnostic test, any needed valve maintenance or valve operator maintenance will be performed by Babcox & Wilcox Field Services Division, using CP approved procedures.
Upon completion of valve and/or valve operator maintenance, the torque switch and limit switch on each operator will be set using the Movats diagnostic equipment.
As mentioned previously, the target thrust windows will be used to establish the "as-left" switch settings.
Current plans are to test as many valves as practical that are identified in IE Bulletin 85-03 at the maximum differential pressure.
However, if Plant conditions prohibit the differential pressure test, the "Movats data base for valve operation against a differential pressure" will be substituted for the performance of these tests.
ITEM d Prepare or revise procedures to ensure that correct switch settings are determined and maintained throughout the life of the Plant.
Ensure that applicable industry recommendations are considered in the preparation of these procedures.
RESPONSE
Babcock & Wilcox has reviewed, revised and rewritten all of Palisades Plant's Limitorque maintenance procedures to ensure that switch settings are properly set and maintained.
Babcock & Wilcox had been chosen to review and revise our Limitorque procedures because they are an authorized Limitorque repair facility and are adequately prepared to address.all applicable industry recommendations concerning Limitorque operators.
These maintenance procedures have been reviewed and approved by Palisades Plant personnel and will be used
. to perform all future Limitorque motor operator maintenance.
Industry information from equipment vendors INPO (SOERs and SERs), NSSS vendors (CE ADP Info Bulletins), and the NRC is reviewed and evaluated through the Palisades operating experience review program.
The program is administered by the Plant Safety Engineering (PSE) group with recommendations resulting from the review of applicable items forwarded to the appropriate plant department(s) for action as necessary.
Additionally Palisades OC0987-0162-NL02
Nuclear Regulatory Commission Palisades Plant Revised Response to IEB 85-03 September 17, 1987 participates in the NPRDS program in which equipment failures can be tracked.
Maintenance procedures will be revised as necessary to incorporated the PSE recommendations resulting from the industry information.
Periodic reviews (a minimum of every two years) by knowledgeable personnel also ensure the maintenance procedures contain up-to-date information.
ITEM e Within 180 days *of* the date of this Bulle.tin, submit a written report to the NRC that:
(1) reports the results of Item A and; (2) contains the program to accomplish Items B through D above including a schedule for completion of these items.
RESPONSE
The maintenance outage in which IE Bulletin 85-03 program actions will be completed is scheduled to begin in October 1987.
Final documentation verifying completion of the IE Bulletin 85-03 program at the Palisades Plant will be submitted to the NRC within 60 days of the program's completion, but not later than January 15, 1988.
Kenneth W Berry Director, Nuclear Licensing CC Administrator, Region III, NRC NRC Resident Inspector - Palisades Attachment OC0987-0162-NL02 4
CONSUMERS POWER COMPANY Palisades Plant Docket 50-255 - License DPR-20 RESPONSE TO NRC BULLETIN At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and.the Commission's Rules and Regulations thereunder, Consumers Power Company submits our re.vised response to NRC Bulletin 85-03 dated November 15, 1985, entitled, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings.
Consumers Power Company's revised response is dated*
September 17, 1987.*
- NsARfl~
G L Heins, Vice President Fossil Operations Sworn and subscribed to before me this 17th day of September 1987.
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Elaine E Buehrer, Notary Public Jackson County, Michigan My commission expires October 31, 1989 OC0987-0162-NL02
ATTACHMENT A CONSlWJ.ERS POWER COMPANY PALISADES PLANT DOCKET 50-255 PALISADES PLANT INFORMATION FOR USE IN RESPONDING TO ITEM (a) IE BULLETIN 85-03 FOR HIGH PRESSURE SAFETY INJECTION SYSTEM MOTOR-OPERATED VALVES AND AUXILIARY FEEDWATER SYSTEM MOTOR-OPERATED VALVES MS0987-0004B-NL02
Table of Contents Title High Pressure Safety Injection System
- Palisades Design Basis for Operation of HPSIS MOV's
- Palisades HPSIS Schematic
- Palisades HPSIS MOV Data Summary Auxiliary Feedwater System
- Palisades Design Basis for Operation of AFWS MOV's
- Palisades AFWS Schematic
- Palisades AFWS MOV Data Summary MS0987-0004B-NL02 ATTACHMENT A Page 1 of 11 Page No 2
3 4
8 9
10
PALISADES DESIGN BASIS FOR OPERATION OF.HPSIS MOVs Postulated Postulated Valve Upstream Downstream Valve Function Tag No Condition ConditiOn Auto Open on M0-3007 High:
HPSI pump Low:
Atmos press SIAS M0-3009 shutoff head M0-301.1 M0-3013 M0-3062 M0-3064 M0-3066 M0-3068 Manually close M0-3007 High:
HPSI pump Low:
Atmos press following shutdown M0-3009 shutoff head M0-3011 M0-3013 M0-3062 M0-3064 M0-3066 M0-3068 Open for Hot Leg M0-3080 High:
HPSI pump Low: Atmos press injection M0-3081 shutoff head Manually close from M0-3080 High:
HPSI pump Low:
Atmos press Control Room M0-3081 shutoff head Close for Hot Leg M0-3082 High:
HPSI pump Low:
Atmos press injection M0-3083 shutoff head Manually open from M0-3082 High:
HPSI. pump Low:
Atmos press Control Room M0-3083 shutoff head Manually open from M0-3041 Low:
SI tank High:
Max normal Control Room M0-3045 pressure PCS pressure
- Mo-3049 M0-3052 Manually closed from M0-3041 Low:
SI tank High:
Max normal Control Room M0-3045 pressure PCS pressure M0-3049 M0-3052 MS0981-*0004B-NL02 ATTACHMENT A Page 2 *of 11 Notes HPSI isolation valves - normally open HPSI flow to Hot Leg HPSI bypass valves SI tank
-isolation valves normally locked open see Tech Spec 3.3.1.i
Fron Refueling Water Storage Tank Palisades HPS IS Scher.ia tic H0-3081 H0-3080 from Cont.
'a...:...----..&-
~--------"L-------------------;----------~--t I Sump H0-1082 H0-3083 T-82A M0-3041
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__._ To Cold leg H0-3007 T-82B M0-3045
~~----- To Co 1 d leg T-82C M0-3049
~C"J-_._ ___ To Co 1 d leg T-82D tl>-301]
M0-3052 To Cold Leg H0-3062 To Hot Leg
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Valve M0-3062 Velan Valve Corp Globe W8-376-13MS 2"
1500ffa/N/A 300°F/N/A M0-3064 Velan Valve Corp Globe W8-376-13MS 2"
1500ffa/N/A 300°F/N/A M0-3066 Velan Valve Corp Globe W8-376-13MS 2"
lSOOffa/N/A 300°F/N/A M0-3068 Velan Valve Corp Globe W8-376-13MS 2"
1500ffa/N/A 300°F/N/A MS0987-0004B-NL02 Valve Operator Limitorque SMB-00-15 1700 RPM N/A Limitorque SMB-00-15 1700 RPM N/A Limitorque SMB-00-15 1700 RPM N/A Limitorque SMB-00-15 1700 RPM N/A Valve Function HPSI Isolation HPSI Isolation HPSI Isolation HPSI Isolation HIGH PRESSURE SAFETY INJECTON Data Summary Design Basis l:iP Open/Close 1245 psi/
1245 psi 1245 psi/
1245 psi 1245 psi/
1245 psi 1245 psi/
1245 psi Test&
Open/Close Switch Settings Prior to Adjust-ments as a Result of Bulletin Open/Close ATTACHMENT A Page 5 of 11 Final Switch Settings in Response to Bulletin Open/Close
Valve M0-3080 Anchor /Darling Gate Dg No 4315-3-~
6" 2500/t/2485 psig 650°F/682°F M0-3081 Anchor/Darling Gate Dg No 4350-3 6"
2500/t/2485 psig 650°F/682°F M0-3082 Kero test Globe D-PAL-D-22546M0-1 2"
2500/t/2485 psig 650°F/682°F M0-3083 Kero test Globe D-PAL-D-225L16M0-1 2"
2500/A/2485 psig 650°F/682°F MS0987-0004B-NL02 Valve Operator Limitorque SMB-0-25.
1800 RPM N/A Limitorque SMB-0-25 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A HIGH PRESSURE SAFETY INJECTION Data Summary Valve Function HPSI Train Isolation HPSI Train Isolation HPSI Hot Leg Isolation HPSI Hot Leg Isolation Design Basis /jp Open/Close 1238 psi/
1238 psi 1239 psi/
1239 psi 1235 psi/
1235 psi 1235 psi/
1235 psi Test&
Open/Close Switch Settings Prior to.Adjust-ments as a Result of Bulletin Open/Close ATTACHMENT A Page 6 of 11 Final Switch Settings in Response to Bulletin Open/Close e
Valve M0-3041 Walworth Gate Dg No A-12348-M-ID 1211 1500ffa/2485 psig 650°F/N/A M0-3045 Walworth Gate Dg No A-12348-M-ID 1211 1500ffa/2485 psig 650°F/N/A M0-3049 Walworth Gate Dg No A-12348-M-ID 1211 1500#/2485 psig 650°F/N/A M0-3052 Walworth Gate.
Dg No A-12348-M-ID 1211 1500ffa/2485 psig 650°F/N/A MS0987-0004B-NL02 Valve Operator Limitorque SMB-2-60 1800 RPM N/A Limitorque SMB-2-60 1800 RPM N/A Limitorque SMB-2-60 1800 RPM N/A Limitorque SMB-2-60 1800 RPM N/A Valve Function SI bottle Isolation SI bottle Isolation SI bottle Isolation SI bottle Isolation HIGH PRESSURE SAFETY INJECTION Data Sununary Design Basis /jp Open/Close 1885 psi/
1885 1885 psi/
1885 1885 psi/
1885 1885 psi/
1885 Test&
Open/Close Switch Settings Prior to Adjust-ments as a Result of Bulletin Open/Close ATTACHMENT A Page 7 of 11 Final Switch Settings in Response to Bulletin Open/Close
Valve Function Auto Open on AFAS Close for FOGG MS0987-0004B-NL02 Valve Tag No M0-0743 M0-0748 M0-0753 M0-0754 M0-0755 Mo-0759 M0-0760 M0-0798 M0-0743 M0-0748 M0-0753 M0-0754 M0-0755 M0-0759 M0-0760 M0-0798 PALISADES DESIGN BASIS FOR OPERATION OF AFWS MOV's Postulated Upstream Condition High*:
AFWP shutoff head pressure including service water pump shutoff head 9r fire pump shuto£f head or head due to maximum CST level High:
AFWP shutoff head pressure including service water pump shutoff head or fire pump shutoff head or head due to maximum CST level Postulated Downstream Condition Low:
Atmos press Low:
Atmos press ATTACHMENT A Page 8 of 11 Notes AFWP downstream
- isolation valves Normally open
CST Fire Protection System Service Water System P-88 P-8A P-8C MO 0743 MO 0798 MO 0753 MO 0760.
MO 0748 MO 0755 MO 0754 MO 0759 PALISADES AUXILIARY FEEDWATER SYSTEM SCHEMATIC SG r-----~ E-50-B SG E-50-A
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Valve M0-0743 Anchor/Darling Gate 1-4F-5A 4"
900ffa/1690 psig 100°F/120°F M0-0748 Anchor/Darling Gate 1-4F-5A 4"
60011/1337 psig 100°F/120°F M0-0753 Anchor/Darling Gate 1-4F-5A 4"
900ft/1690 psig 100°F/120°F M0-0754 Ancho*r /Darling Gate l-4F-5A 4"
600fl/1337 psig 100°F/120°F MS0987-0004B-NL02 Valve Operator Limitorque SMB-00-10 1800 RPM N/A
- Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Valve Function AFWP, P-8A and P-8B, AUXILIARY FEEDWATER SYSTEM Data Summary Design Basis M Open/Close 1714 psi(
1714 psi TestM Open/Close discharge to SG E-50-B AFWP, P-8C 1354 psi/
discharge 1354 psi to SG E-50B AFWP, P-8A 1714 psi/
and P-8B, 1714 psi discharge to SG E-50-A AFWP, P-8C 1354 psi/
discharge 1354 psi to SG E-50-B Switch Settings Prior to Adjust-ments as a Result of Bulletin Open/Close ATTACHMENT A Page 10 of 11 Final Switch Settings in Response to Bulletin Open/Close e
Valve M0-0755 Anchor/Darling Gate 1-4F-5A 4"
600#1337 psig 100°F/120°F ID-0759 Anchor/Darling Gate 1-4F-5A 411 600#1337 psig 100°F/120°F ID-0760 Anchor/Darling Gate 1-4F-5A 4"
900ft/1690 psig 100°F/120°F ID-0798 Anchor/Darling Gate 1-4F-5A 4"
900ft/1690 psig 100°F/120°F MS0987-0004B-NL02 Valve Operator Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Limitorque SMB-00-10 1800 RPM N/A Valve Function AFWP, P-8C discharge to SG E-50-B AFWP, P-8C discharge to SG E-50-A AFWP, P-8A and P-8B, discharge SG E-50-A AFWP, P-8A and P-8B, discharge SG E-50-B AUXILIARY FEEDWATER SYSTEM Data Summary to to Design Basis l1P Open/Close 1351 psi/
1351 psi 1351 psi/
1351 psi 1711 psi/
1711 psi 1711 psi/
1711 psi Test&
Open/Close Switch Settings Prior to Adjust-ments as a Result of Bulletin Open/Close ATTACHMENT A Page 11 of 11 Final Switch Settings in Response to Bulletin Open/Close
-