U-600529, Responds to IE Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Util Will Complete All Work Required by Bulletin Prior to Exceeding 5% Power.Valve Data Table Encl
| ML20198C800 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 05/15/1986 |
| From: | Spangenberg F ILLINOIS POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-85-003, IEB-85-3, U-600529, U-60052903, NUDOCS 8605230055 | |
| Download: ML20198C800 (6) | |
Text
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hmB U-600529 LO8-86 (05-15)-L 1A.120 ILLINOIS POWER COMPANY CLINTON PCMER STATION, P.o. BOX 678. CLINTCN. ILLINOIS 61727 May 15, 1986 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Pcad Glen Ellen, Illinois 60137
Subject:
IE Bulletin 85-03:
Motor-Operated Valve Common Mode Failures During Plant Transients Due To Improper Switch Settings
Dear Mr. Keppler:
This letter constitutes Illinois Power (IP) Company's response to IE Bulletin 85-03, Item E which requires all holders of construction permits to submit the results of Item A, describe the program for accomplishing Items B through D, and include a schedule for the completion of these items. The results of Item A are enclosed as.
The program for accomplishing Items B through D is described in Attachment 2.
Illinois Power will complete all work required by Items B, C, D, and F of this Bulletin prior to exceeding 5%
power.
I hereby affirm that the information in this letter and the attachments is correct to the best of my knowledge.
Please contact me if you should have any questions on this matter.
Sincerely yours, Manager [-Licnsing F. A. Sp nge erg and Safety SMK/kaf Attachments (2) cc:
B. L. Siegel, NRC Clinton Licensing Project Manager NRC Resident Office Illinois Department of Nuclear Safety NRC Document Control Desk 8605230055 860515 PDR ADOCK 05000046 I 6ll t
IG PDR gg i}
IE Bulletin 85-03 Item A Attrchm:nt 1 to Velva Data Table U-600529 Page 1 of 4 Valve Valve Valve Function Component ID, Operator (e.g. AFW pump Manufacturer, Manufacturer, discharge Type, Model,
- Model, isolation Design Basis tiP (psi)
Size, Rating Motor RPM valve)
Open & Close (High Pressure Core Spray System) 1E22-F001, Limitorque, HP Suction Valve 90 Anchor Darling, SMB-00,
- Gate, 1700 522201124, 16", 150 lb.
1E22-F004, Limitorque, Injection Valve 1575 Anchor Darling, SB-3,
- Gate, 3380
- 52220212, 10", 655 lb.
1E22-F010, Limitorque, HP Test Return Valve 1575 Anchor Darling, SMB-4,
- Globe, 1720
- 52220511, 10", 900 lb.
IE22-F011, Limitorque, HP Test Return Valve 1575 Anchor Darling, SMB-4,
- Globe, 1720
- 52220612, 10", 900 lb.
1E22-F012, Limitorque, Low Flow Bypass Valve 1575 Anchor Darling, SB-0,
- Gate, 3400
- 52220314, 4",
900 lb.
lE22-F015, Limitorque, Suppression Pool 90 Anchor Darling, SB-1, Suction Valve
- Gate, 3450
- 52220412, 20", 150 lb.
1E22-F023, Limitorque, Suppression Pool 1575 Anchor Darling, SMB-3, Test Valve
- Globe, 1725
- 52220711, 10", 900 lb.
1
f IE Bulletin 85-03 Item A Attachmtnt I to Velve Data Table U-600529 Page 2 of 4 Valve Valve Valve Function Component ID, Operator (e.g. AFW pump Manufacturer, Manufacturer, discharge Type, Model,
- Model, isolation Design Basis 6P (psi)
Size, Rating, Motor RPM valve)
Open & Close (Reactor Core Isolation Cooling System) lE51-F010, Limitorque, Cond. Storage Tank 75 Anchor DarJing, SMB-000, Iso. Valve
- Gate, 1900
- E6214291, 6", 150 lb.
IE51-F013 Limitorque, Pump Discharge Valve 1400 Anchor Darling, SMB-0,
- Gate, 1900 E62141691, 6", 900 lb.
IE51-F019, Limitorque, Pump Min-Flow Bypass
- Yarway, SMB-000 Valve
- Globe, 1900 E62142767, 2", 900 lb.
IE51-F022, Limitorque, Pump Test Return Valve 1400 Anchor Darling, SMB-00,
- Globe, 1900
- E6214871, 4",
900 lb.
1E51-F031, Limitorque, Suppression Pool 75 Ancher Darling, SMB-000, Pump Suction Valve
- Gate, 1900
- E6214311, 6",
150 lb.
1E51-F045, Limitorque, Steam Supply Valve 1177 Anchor Darling, SMB-0,
- Globe, 1900
- E6214881, 4",
900 lb.
IE51-F046 Limitorque, Cooling Loop Shut-Off 1400 Anchor Darling, SMB-000, Valve
- Globe, 1900 E62142768, 3",
900 lb.
IE Bulletin 85-03 Item A Attachment I to Valva Data Table U-600529 Page 3 of 4 Valve Valve Valve Function Component ID, Operator (e.g. AFW pump Manufacturer, Manufacturer, discharge Type, Model,
- Model, isolation Design Basis OP (psi)
Size, Rating Motor RPM valve)
Open & Close (Reactor Core Isolation Cooling System) 1E51-F059, Limitorque, Pump Test Return Valve 1400 Anchor Darling, SMB-00,
- Gate, 1900
- E6214721, 4", 900 lb.
1E51-F063, Limitorque, RCIC Steam Flow 1177
' Anchor Darling, SMB-0, Iso. Valve
- Gate, 1700
- E621451, 8", 600 lb.
1E51-F064, Limitorque, RCIC Steam Flow 1177 Anchor Darling, SMB-0, Iso. Valve
- Gate, 1700 E62141431, 8", 600 lb.
1E51-F068, Limitorque, Turbine Exhaust Iso.
30 Anchor Darling, SMB-000, Valve
- Gate, 1700
- E6214341, 12", 150 lb.
1E51-F076, Limitorque, Steam Warm-up Iso. Valve 1177
- Rockwell, SMB-00,
- Globe, 1700
- BLO21, 1", 1500 lb.
1E51-F077, Limitorque, Vacuum Breaker Iso. Valve 30'
- Yarway, SMB-000,
- Globe, 1700
- 5515B, 1.5", 600 lb.
1E51-F078, Limitorque, Vacuum Breaker Iso. Valve 30 Anchor Darling, SMB-000,
- Gate, 1700 E62141401, 3", 150 lb.
IE Bulletin 85-03 Item A Attachment I to Valve Data Table U-600529 Page 4 of 4 Valve Valve Valve Function Component ID, Operator (e.g. AFW pump Manufacturer, Manufacturer, discharge Type, Model,
- Model, isolation Design Basis 6P (psi)
Size, Rating Motor RPM valve)
Open & Close (Reactor Core Isolation Cooling System) 1E51-F095, Limitorque, F045-Bypass Valve 1177 Anchor Darling, SMB-000,
- Globe, 1900 E62143911,
'1", 600 lb.
. 1E51-C002E, Limitorque, RCIC Turbine Trip 1177
- Gimpel, SMB-000, and Throttle Valve
- Globe, 1900 7412218 4", 900 lb.
~
- Shut off head of RCIC pump (1370 psi) f 4
3 1
i
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Attachmsnt 2 to U-600529 Valve Test Program The motor operated valve analysis test system (MOVATS) will diagnose and correct the following types of valve and operator degradations:
1.
Valve mechanical degradation 2.
Operator mechanical degradation 3.
Operator gear wear 4.
Motor electrical degradation 5.
Improperly set limit switches 6.
Improperly set torque switches 7.
Backseating conditions 8.
Torque switch relaxations 9.-
Unbalanced torque switches 10.
Loose stem nut locknut 11.
Inadequate thrust available to operate valve under accident conditions 12.
Excessive packing loads 13.
Improper operator lubricant To support the above program, the Nuclear Station Engineering Department compiled a list of all torque switch settings and thrust values required to seat and unseat the valves listed in Attachment 1 under design conditions. The normal and maximum torque switch settings were obtained from the torque switch calibration plate which is mounted in the operator's limit switch compartment. The thrust values were obtained from the valve vendors. The torque switches will be set to obtain the controlled thrust values during the Plant Staff (MOVATS) program. The bypass (limit) switches are set in accordance with CPS Operating Procedure 8451.02 "MOVATS Testing of Motor Operated Values", as follows:
In the opening direction, the switch is set to open at no less than 20% of the valve stroke, to insure the valve will unseat and overcome any initial P loads.
In the closing direction the limit switch is set to open at approximately 5% or one (1) second from the fully closed position, whichever is smaller.
In addition to the above diagnostic capabilities, this program also provides trending capabilities. Parameters such as motor current, cycle time, running loads, hammerblow peaks, and available load inertia will be recorded and will be available to determine long term degraded operator conditions. Valves will also be opened under the maximum differential pressure specified in Attachment 1.
Nuclear Station Engineering Department Instruction ME-6 " Control of Valve Torque Switch Settings list" will ensure proper switch settings are maintained for the life of the plant.