ML20244B494

Responds to NRC Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. During Future outage,four-train Limit Switch & Heavy Duty Spring Pack Will Be Installed

ML20244B494
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	06/08/1989
From:	Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-89-50, IEB-85-003, IEB-85-3, NUDOCS 8906130139
Download: ML20244B494 (46)

Text

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7-g .g VERMONT YANKEE NUCLEAR POWER' CORPORATION 3 Ferry Road, Brattleboro, VT 05301-7002 89-50 ENGINEERING OFFICE

' 580 MAIN STREET '

' BOLTON. MA 01740 '-

(508)779 6711 June 8, 1989 U.S. Nuclear Regulatory Commission-Washington, D.C. 20555 Attention: Document Control Desk

References:

a) License No. DPR-28 (Docket No. 50 271).

b) Letter, USNRC to All Holders of Nuclear Power Reactor Operating Licenses (OLs) or Construction Permits (cps) for Action, NVY 85-250, dated 11/15/85 (IEB 85-03) c) Letter, VYNPC to USNRC, FVY 86-45, dated 5/14/86 d) Memorandum, G. Grant (USNRC) to J. Pelletier (VYNPS),

NVY 88-046, " Request for Additional Information Concerning-Vermont Yankee's Response to IEB 85-03," dated 3/30/88 e) Letter, USNRC to All Holders of Operating Licenses or Construction Permits for Boiling Water Reactors (BWRs),

NVY 88-070, dated 4/27/88 (NRC Bulletin 85-03, Supp. 1) f) Letter, VYNPC to USNRC, FVY 88-34, dated 5/5/88 g) Letter, VYNPC to USNRC, FVY 88-45, dated 6/2/88

Subject:

NRC Bulletin No. 85-03, Motor Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings - Vermont Yankee Submittal of Final Report In accordance with the requirements of NRC Bulletin 85-03 [ Reference b)),  !

as supplemented [ Reference e)], Vermont Yankee herewith submits, as an enclosure to this letter, the requested final report.

The action items outlined in the Bulletin required Licensees to identify which valves met the Bulletin criteria, establish the design basis for.these valves, develop a switch setting program, stroke test each valve to determine its operability, and prepare procedures for determination and maintenance of switch settings. As detailed in the encksed report, Vermont Yankee's operabi-lity review, in response to Bulletin 85-03, for the condition of the subject Motor-Operated Valves (MOVs) was based on prior operating history in addition to j as-found thrust and limit switch settings. Where appropriate, new thrust and switch settings have been developed in accordance with our guidelines for selecting, setting, and maintaining switches for MOVs. These new settings increase the operability margin for the applicable MOVs. Valves have been j stroke tested, using valve analysis equipment, to verify correct switch set-tings, and procedures have been prepared and/or modified for the maintenance of these switch settings.

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8906130139 890608 ,

s'~ 'i PDR ADOCK 05000271 1 O PDC

• i

r i VERMONT YANKEE NUCLEAR POWER CORPORATION U.S. Nuclear Regulatory. commission June 8, 1989 Page 2 We trust that the attached report is response to the requirements of the.

subject Bulletin; however, should you have any questions or require additional information, please contact us.

Very truly yours, l VERMONT YANKEE NUCLEAR POWER CORPORATION

!=^

Warren P. urphy Vice President and j Manager of Operation. '

/dm cc: USNRC Regional Administrator, Region I USNRC Resident Inspector, VYNPS I

STATE OF VERMONT)

)ss WIN 0 HAM COUNTY )

j Then personally s.ppeared before me, Warren P. Murphy, who, being duly sworn, did state that he is Vice President and Manager of Operations of Vermont Yankee Nuclear Power Corporation, that he is duly authorized to execute and file the foregoing document in the name and on the behalf of Vermont Yankee Nuclear Power Corporation and that the statements therein are true to the best of his knowledge and belief. I W b

< .i Diane M. McCue MW~ Notary Public My Commission Expires'Februar 3a '091 g (

IIDIMY ,

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VERMONT YANKEE RESPONSE TO IE BUTU TIN 85-03 I. INULODUCTION As a result of several instances of on-demand, common mode failures of motor-operated valves due to improper switch settings, IE Bulletin 85-03, Reference No. 1, was sent to licensees requesting that they develop and-implement a program to ensure that switch settings on certain safety-related motor-operated valves are selected, set, and maintained correctly to accommodate the maximum Differential Pressures (DPs) expected in these valves during both normal and abnormal events within the design basis. In accordance with the requirements set forth in the subject bulletin, Vermont Yankee herein reports the results of our review and demonstration of the operational readiness of each motor-operated valve in the High Pressure Coolant Injection (HPCI) and Reactor Core Isolation Cooling (RCIC) systems that are required to be tested for operational readiness in accordance with 10CFR50.55a (g).

Vermont Yankee's program to ensure that valve operator switches are selected, set, and maintained properly is a three-fold program. First, the required stem thrust for each valve was calculated based on its highest calculated DP. Second, a motor-operated valve analysis system was applied to diagnose the valve's characteristics, set the motor operator to produce the required stem thrust, and verify limit switch settings. Third, a maintenance program was instituted to review each motor operator, to ensure correct and undamaged parts are installed, and to control and properly adjust motor operators to achieve their operational readiness. Procedures for operating the valve analysis equipment and setting limit switches have been written which reference stem thrust and limit switch settings requirements.

Vermont Yankee proposed to complete this three-fold program no later than the end of our scheduled Cycle 14 refueling outage. Within 60 days of completion of the program, Vermont Yankee committed to submit a written report providing verification of completion of the requested program.

As required by Bulletin Action Item (f), this report presents our I verification of completion for each of the individual action items, a summary of the findings as to valve operability prior to any adjustments resulting l

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f rom the bulletin,' and a summary of data in accordance with the bulletin's suggested data summary report. ')

i The HPCI and RCIC Systems have been reviewed to identify the MOVs which are subject to the concerns. expressed in IEB'85-03. All MOVs identified in the Vermont Yankee response to the' Bulletin are shown in Table No. 1.

Table No. 1 lists by name and identification number the valves that were originally reported to be within the scope of IEB 85-03 in-Reference No. 2. . Valve V13-1 (trip throttle valve) has been excluded from the IEB 85-03 response since the motor operator is not. required, under any circumstances, to act'with an applied DP. The operator simply relatches the trip mechanism. Common stroke testing of this valve subjects it to the same conditions as any accident or mispositioning actf.on.

Valve V23-24 is a nonsafety MOV and, therefore, not subject to IEB 85-03 reporting requirements.

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, s TABLE 1 MOTOR OPERATED VALVES REVIEWED TO IE BULLETIN 85-03 RCIC V13 ?* Trip Throttle Valve VIS .15 Steam Supply Isolation V13-16 Steam Supply Isolation V13-18 Condensate Storage Tank Pump Suction V13-20 Pump Discharge V13-21 Pump Discharge V13 Minimum Flow By-Pass V13-30 Test By-Pass V13-39 Pump Suction From Suppression Chamber V13-41 Pump Suction From Suppression Chamber V13-131 Steam to Turbine V13-132 Lube Oil Cooler Water Supply HPCI V23-14 Steam to Turbine V23-15 Steam Supply Isolation V23-16 Steam Supply Isolation V23-17 Condensate Storage Tank Pump Suction V23-19 Pump Discharge V23-20 Pump Discharge V23-21 Test By-Pass V23-24 ** Test By-Pass l V23-25 Minimum Flow By-Pass V23-57 Pump Suction From Suppression Chamber V23-58 Pump Suction From Suppression Chamber

• - Excluded from Bulletin requirements; Motor Operator does not operate against an applied differential pressure

" - Excluded from Bulletin requirements: Valve is Non-Nuclear Safety class i

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. I I .- IEll&LETIN 85-03 ACTION ITEMS j i

j Vermont Yankee's plans for responding to IE Bulletin 85-03 were .)

provided in References (2) and (4). This'section summarizes the actions taken )

as a result of our plans and serves to verify that the intended actions have been completed or identify areas where our plans changed and the completed actions differ from-the original plan.. l l

II.A IE Bulletin 85-03. Action Item a ]

For motor-operated valves in the high pressure coolant injection / core spray and emergency feedwater systems (RCIC for BWRs) that are required to be tested for operational readiness in accordance with 10CFR50.55a(g), develop l

and implement a program to ensure that valve operator switches are selected, set, and maintained properly. This should include the following components:

a. Review and document the design basis for the operation of each valve. This documentation should include the maximum DP expected l during both opening and closing the valve for both normal and I abnormal events to the extent that these valve operations and events are included in the existing, approved design basis. (i.e. ,

the design basis documented in pertinent licensee submittals such as FSAR analyses and full-approved operating and emergency I procedures, etc.). When determining the maximum DP, 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.

I Vermont Yankee Completion of Action IteDLB l

Vermont Yankee has completed review and documentation of the design basis for the operation of valves in the High Pressure Coolant Injection System (HPCI) and the Reactor Core Isolation Cooling System (RCIC). The results of this review are documented in Table No. 2.

The Vermont Yankee plant is a General Electric Boiling Water Reactor j

.(BWR) and has no High Pressure Core Spray System or Emergency Feedwater )

System. Therefore, Vermont Yankee has evaluated the high pressure coolant 7767R

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injection function which is provided by our HPCI System and our RCIC System.

The HPCI System consists a of steam-driven pump, valves, and piping and is I used for accident conditions. The RCIC System consists of a steam-driven pump, valves, and piping and is used for abnormal plant conditions.

The HPCI and RCIC Systems have been reviewed to identify the MOVs which 1 are subject to the review expressed in IEB 85-03. All MOVs subject to a response in accordance with the bulletin are listed in Table No. 1.

Table No. 2 lists the valves by identification number and provides the design and maximum calculated accident DP requirements plus the required -

safety action for each valve.  ;

I The design DP is determined from plant drawings and equipment specifications. Prior to the 1989 outage, the design DP was used in j conjunction with a calculational method (Limitorque) to determine the minimum )

thrust to set the operator to produce.

In accordance with the Vermont Yankee response to IEB 85-03 (Reference No. 2), the accident DP for each valve has been calculated to encompass i

normal, accident, and mispositioning DPs.. Vermont Yankee used the "BWR Owners Group Report on the Operational Design Basis for Selected Safety-Related Motor-Operated Valves" NEDC-313322 (Reference Nos. 8 and 9) as a basis to determine maximum DPs. The NRC has accepted this report in Reference No. 10 as an acceptable methodology for selection of valves and their maximum expected DP.

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1 TABLE 2 DESIGN BASIS CONDITIONS FOR VALVES l

SUBJECT TO IE BULLETIN 85-03 l

VALVE I.D. DESIGN DP ACCIDENT DE SAFEIY ACTION i

V13-15 1250 psid 1080 psid Close j V13-16 1250 1080 Close V13-18 150 44.6 Both V13-20 1500 1009 Open )

V13-21 1500 1088 Open I

V13-27 1500 1103 Both V13-30 1500 1077 None V13-39 150 22.3 Both V13-41 150 22.3 Both i V13-131 1250 1080 Both V13-132 1500 1107 Both l i

i V23-14 1250 1080 Open V23-15 1250 1080 Close I V23-16 1250 1080 Close V23-17 100 45.9 Both V23-19 1250 1227 Open V23-20 1250 1221 Open l V23-21 1250 1305* None V23-25 1250 1368* Both V23-57 150 55.5 Both V23-58 150 55.5 Both 1

• Conservatively calculated using pump shut-off head and l

injection valve V23-19 not open. Valves are 900# class valves with a working pressure of at least 1640 pst.

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.II.B.- IE'Bulletin 85-03. Action Item b l Using the results'from' Action 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- (i.e.,- torque,-

torque bypass, position limit, and overload) for each valve operation ~(opening -g and closing).

If the license determines that a valve is inoperable, the licensee shall.also'make an appropriate justification for continued operation in accordance with the applicable' technical specification.

-YRImpnt Yankee Completion of Action Item b Vermont Yankee's program for selecting and setting switches as required -

by this Action Item has been completed. However, one valve (V13-15) is considered operational in accordance with the bulletin requirements but has not been standardized to the Vermont YankeecProgram.- A' complete.explanat' ion-of V13-15 is contained in Section IV. 1

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Vermont Yankee's switch setting program established for IEB 85-03 valves followed the guidelines provided below.

Switch Setting Guidelines

1. Selecting

a. Open Limit Switch I

The open limit switch will be set such that the valve either does not or only lightly comes in contact with the back seat due to its momentum and inertia. The switch may initially be set at 95% of full open and adjusted, if necessary, by use of the information in the valve signatures. .

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b. Closed Limit Switch A closed limit switch is not used on any Vermont Yankee bulletin valves,

c. Open Bypass Limit Switch The limit switch is set at approximately 20-25% of valve travel beyond the hammer blow of the operator. 20% to 25% of valve travel is more than sufficient to ensure that the effects of DP l on opening have reduced to less than the open torque switch setting.  !

d. Close Bypass Limit Switch The closed bypass limit switch is set such that it covers at least that part of the stroke during which intermittent forces such as hammer blow occur. It is set at approximately 95% open 4 and adjusted if necessary according to valve signatures to l l

ensure valve closure on torque. )

e. Close Torque Switch

1. Minimum Setting (a) Calculate the DP at accident conditions (inadvertent valve actuation encompassed) see Table No.2.

(b) Use this accident DP in a statistical data base (MOVATS) to get a comparable thrust. This thrust is the minimum acceptable thrust the valve can be set to. .

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m ii. Target Setting The minimum thrust. setting has a 10% margin added to'it t to achieve a target thrust. This target thrust is used in the field as the nominal thrust setting.

iii. Maximum Setting The maximum setting is based on the limitations of the operator.

f. Open Torque Switch l

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i. The open torque switch settings will be set as determined in II.B.1.e above.

g. Thermal Overloads  !

i. Thermal overloads for all IEB 85-03 valves are sized such that the ability of the valve to complete its safety function is not jeopardized by an undersized thermal overload device.

2. Setting

a. The setting of limit switches is done using an approved procedure (Reference No. 5) and an approved drawing (Reference No. 6). Use of valve signature traces will be used, when available, to help set the switches in accordance with l Reference No. 6.

b. The setting of torque switches is performed using an approved l procedure, Reference No. 5, and valve signatures using ,

Reference No. 7, to accomplish the switch setting that yields l

1 the specified thrust values in Reference No. 6.

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c. Thermal' overload protection devices were' reviewed and

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determined to be the correct ' size as determined in Il-B-1.g. .

3. Maintaining Switch Settings

a. All limit switch settings, once completed, are not' subject to drift and; therefore, require checking.or resetting only after-the following maintenance activities:

1. Removal'of operator from valve.

ii. Removal of limit switch.

iii. Removal of stem nut iv. Any repair requiring removal of any gearing during some' pact of the maintenance evolution.

b. Torque switch settings will be checked, as a minimum..by verification of, thrust once every three outages for refueling.

c. Thermal overload protection devices are.specified by controlled drawings.

II.C IE Bulletin 85-03. Action 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 DP 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' provided for any cases where testing with this' maximum DP cannot practicably be performed. This justification should include the alternative to maximum DP-testing which will be used to verify the correct settings.

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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 DP.

Each valve shall be stroke tested, to the extent practical, to verify that the settings defined in' Item (b), above, have been properly implemented i even if testing with DP cannot be performed.

1 Vermont Yankee completion of Action Item c J

The Vermont Yankee response, Reference No. 2, to NRC IE Bulletin 85-03 stated that full design DP testing at Vermont Yankee was not viable. All of the valves within the scope of the Bulletin for Vermont Yankee HPCI and RCIC Systems were re,"c u~ to determine if an acceptable DP test could be performed. The HPCI and RCIC Systems are steam powered systems making DP I testing during a shutdown virtually impossible. Therefore, DP testing must be done during power operations when these systems are required to be operationally ready. Because of the status of these systems during operation, only two bulletin valves were within the qualifications necessary to allow DP testing, V13-131 and V23-14. These valves are normally stroked during system i monthly surveillance and are capable of being used as emergency steam isolation to the turbines.

NOTE: Two other safety-related globe valves, not in the HPCI or RCIC Systems, were also DP tested. The results of these DP tests were similar to the l results of V13-131, so only results of testing the bulletin globe valve (V13-131) will be reported here.

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Special test procedures were developed to allow and control the use of these valves as steam isolation valves and, therefore, obtain a DP (998 psid)

I which is near the calculated accident DP of 1080 psid. During the DP test, valve analysis equipment was installed to record thrust and switch movement.

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The original method for DP testing, as presented in the IEB 85-03 Response Reference No. 2, was to calculate the available DP at test conditions and reset the torque switch appropriately. If the valve stroked successfully, the Vermont Yankee methodology for setting switches was considered acceptable. This approach was discarded in favor of obtaining more performance information about the MOV while stroking against the applied DP.

The selected valves are physically different. V13-131 is a 3" globe- J valve, and V23-14 is a 10" gate vrive. Neither valve has special design features, and they are typical of other valves throughout the plant.

Table No. 4 presents the results of this testing compared against the calculational method (Limitorque) for determining required thrusts. The conclusion is that the calculational method is marginally acceptable for globe valves and that the calculational method for gate valves should include some additional conservative measures, such as using a higher " design" DP or increasing the " valve factor."

Table No. 5 presents a comparison of the extrapolated thrust for the accident DP to the calculated thrust (Limitorque method) using design DP and the data base thrust ("MOVATS") at accident DP. This shows that the data base thrusts are more conservative than either the extrapolated thrusts associated with the accident DP or the calculational method (using the more conservative design DP). However, it also shows that pre-1989 outage settings using design DP calculations were adequate to demonstrate operability by comparison to the extrapolated test thrust requirement for accident DP.

Based on the general conclusions reached by the industry and confirmed by Vermont Yankee DP testing, Vermont Yankee has set all bulletin MOVs above a minimum thrust, correlated to the calculated accident DP, using the "MOVATS" statistical data base (see Table No. 3). Using a statistical data base provides the necessary conservatism to verify that Vermont Yankee MOVs that cannot be DP tested have properly selected thrust settings.

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TABLE 3 CALCU1ATED ACCIDENT DATABASE TARGET PRESENT DESIGN THRUST DP THRUST THRUST THRUST V.I.D. DP (umitorque) (calculated) (Mo'!ATS) (110% databane) SETnNG (psid) Obs) (psid) (Ibs) (Ibs) (Ibs) 1 l

V13-15 1,250 4,010 1,080 7,089 7.798 4,274 " i V13-16 1,250 4,010 1,080 7,089 7,798 7,611 V13-18 150 3,022 44,6 5,559 6.115 8,232 j V13-20 1,500 7,224 1,009 9,236 10,160 10,749 V13-21 1,500 7',224 1,088 9.432 10,376 10,715 V13-27 1,500 3,535 1,103 9,076 9,984 11,038 V13-30 1,500 15,690 1,077 14,217 15,639 15.052 V13-39 150 3,022 22.3 5.378 5.916 7,300 V13-41 150 3,022 22.3 5.378 5,916 6,887 V13-1 % 1,250 8,925 1,080 11.599 12,759 13,121 V13-132 1,500 3,535 1,107 9,078 9,986 11,179

V23-14 1,250 25,997 1,080 26,651 29,317 35,149 V23-15 1,250 25,997 1,080 26,165 27,000 28,135 V23-16 1,250 25,997 1,080 26,651 29,317 28,339 V23-17 100 6,997 45.9 8,118 8,930 12,260 V23-19 1,250 42,470 1,227 46,168 50,785 46,865 V23-20 1,250 42,470 1,221 46,022 50,625 69,050 l V23-21 1,250 76,007 1,305 68,644 75,509 90,000 V23-25 1,250 13,352 1,368 15,711 17,283 16,580 V23-57 150 11,242 55,5 9,403 10,344 24,820 V23-58 150 11,242 55,5 9,403 10.344 10.343

• • - Close torque switch is by-passed 99% of stroke NOTE: All thrusts in this table are closing thrusts concerning torque switch trip, Open thrusts are not applicable since the torque switch is bypassed thmugh the high DP thrust requirement, however, open torque switch settings are based on the maximum DP for opening.

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i II.D. . JE; Bulletin ' 85-03. Action Item d Prepare or revise procedures to ensure that. correct switch settings are g determined and maintained throughout the life of the plant. Ensure.that  ;

applicable industry recommendations are considered in the preparation of these procedures.

I YemDnt Yankee CDEPlat1Qn of Action Item d )

t Vermont Yankee uses two controlled procedures (Reference Nos. 5 and 7) and one design drawing (Reference No. 6) to specifically control and evaluate switch settings.

OP-5',20, "Limitorque Operator Inspection" (Reference No. 5), provides the necessary information to perform maintenance and inspection of Limitorque l motorized valve operators. OP-5220 includes requirements.for equipment tagging, radiation work permits, maintenance requests, and switch setting.--

etc., either by direct instructions or by reference to other controlled plant procedures. OP-5220 essentially controls the final condition of motor operators after motor operator maintenance or inspection activities. i OP-5219 "MOVATS Testing of Motor-Operated Valves" (Reference No. 7),

provides the necessary information to perform signatures analysis of-Limitorque motor operators using the "MOVATS" 2150/2151 motor-cperated valve

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analysis and test system. OP-5219 is specifically for signature analysis only, but does include references for equipment tagging, radiation work permits, maintenance. requests, switch settings, and lifted leads requirements. OP-5219 includes the requirement to use OP-5220 for any limit switch or torque switch adjustments.

Drawing A191360, " Limit Switch and Torque Switch Settings," provides the necessary design information on individual sheets of the drawing for the setting of a specific valve's limit switch rotors and torque switches.

1 General notes are incorporated into each individual sheet by reference. The general switch (rotor) settings for all bulletin valves have been reviewed against the operational requirements for that valve to determine l

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1 whether the general setting requirements are appropriate. Deviations or changes to specific notes for a particular valve are given as a specific note  ;

on the individual sheet for that valve.

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Sheet 23-16, Attachment No. 1, is enclosed as an example, showing the switch settings specific for Valve V23-16.

i Attachment No. 2, "IEB 85-03 MOV Summary" for each bulletin valve details the "as-found" and "as-left" limit switch and torque switch settings.

Vermont Yankee conforms to Bulletin Action Item (d) through application l 1

of the existing 10CER50, Appendix B QA Program, and the associated plant maintenance procedures to control the work by application of administrative, technical, and operational requirements. j i

II.E IE Bulletinc 85-03. Action Item f  ;

i Erovide a writt.en report on completion of the above pIngram. This i

report should provide (1) a verification of completion of the requested I program, (2) a summary of the findings as to valve operability prior to any adjustments as a result of this bulletin, and (3) a summary of data in accordance with Table 2, Suggested Data Summary Format. The NRC staff intends

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to use this data to assist in the resolution of Generic Issue II.E.6.1. This I report shall be submitted to the NRC within 60 davs of completion of the program. Table 2 should be expanded, if appropriate, to include a summary of all data required to evaluate the response on this bulletin. l V1rmonLXankee Completion of Action Itett.f Herein provided is the written report on completion of the above program.

A summary of valve data as suggested in IEB 85-03 is enclosed as Attachment 2 "IEB 85-03 Summary." An individual valve summary sheet is provided for each valve.

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III. VALVE EVALUATION Vermont Yankee has completed the evaluation of switch settings calenlated in response to Action Item (b) for the HPCI and RCIC valves subject to this bulletin. Vermont Yankee's determinations of the valve as found condition was based on information generated from the Action Items, the operation history of the valve, and the control wiring diagrams. The data resulting from the bulletin action items provided the necessary information for making our determinations.

A swnmary of our evaluation of the "as found" condition of each valve is contained on each valve's summary sheet (Attachment 2).

Each valve subject to the bulletin requirements has been mechanically refurbished by cleaning, greasing, parts replacement,etc., and with the exception of V13-15 upgraded to 4-train limit switch assemblies.

The review of each valve was conducted using the guidance for setpoints presented in Section II.B. " Vermont Yankee Completion of Action Item (b)."

Although not specifically required by the bulletin, other evaluations for operability were also conducted for Vermont Yankee bulletin valves. A review for sufficient motor torque was conducted to ensure each motor is sufficiently sized to allow operation of the valve in its accident condition.

Using the required ruotor torque and the applicable motor curves for each direct currect (de) motor, a review for adequate current has been performed. This review was actually performed for Information Notice 89-11 "DC Cable Sizing Verification," but does apply in some respects to the IEB 85-03 issue. This review confirms that all de powered IEB 85-03 valves have sufficient available current to operate under cccident conditions.

IV. OREN_IIEMS Motor-operated Valve V13-15 is not fully in accordance with the switch settings guidelines described in Section II.B. Two open items exist:

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1. The original two-train limit switch assembly has.not been replaced l

with a four-train assembly, which is necessary for meeting the  ;

liinit switch settings guidelines.

2. The spring pack has not been replaced with a heavy-duty spring pack which is necessary to. meet the torque switch settings guidelines. f i

V13-15 is located within the drywell in very close proximity to i stru::tural steel. The four-train assembly requires a larger limit switch cover, and sufficient clearance to the structural steel is not available. In order to allow enough time to properly analyze structural steel modifications or valve / piping changes, V13-15 has been upgraded by eliminating the open torque switch bypass and open torque switch. With the twc-train limit ewitch, the open torque switch bypass cannot be set at 20-25% witbout a b o affecting position indication limit switches on the same rotor. V13-15 opens on limit  ;

at approximately 95% valve open, but does not have mid-strohe valve protection normally provided by the open torque switch. In order to provide valve protection during tho opening stroke, motor thermal overloads are provided, i

sized such that motor damage will be prevented. )

1 During the 1989 outage, a heavy duty spring pack for V13-15 was l unavailable. The lighter spring pack was retained and the close torque switch l was bypassed until just prior to seating. Operator momentum carries the valve disk into the seat to provide proper sealing.

V13-15 is considered by Vermont Yankee to he acceptable in accordance with the requirements of IEB B5-03. Elimination of the open torque switch and essentially closing on limit are accepted methods of valve control which are used throughout the industry. During a future outage, a four-train limit switch and a heavy duty spring pack will be installed to allow switch settings in accordance with Section II.B.

l 7767R

V. CONCLUSIDN All Vermont Yankee valves presently within the scope of IE Bulletin 85-03 have been reviewed to the requirements of IEB 85-03 and are considered operable within those requirements.-

VI. REEEEENCES

1. Letter, USNRC to All Holders of Nuclear Power Reactor Operating Licenses (OLs) or Construction Permits (cps) for Action, dated November 15, 1985 (IEB 85-03).

2. Letter, VYNPC to USNRC, FVY 86-45, dated May 14, 1986.

3. Letter, USNRC to All Holders of Operating Licenses or Construction Permits for Boiling Water Reactors (BWRs), dated April 27, 1988 l

(NRC Bulletin 85-03, Supplement 1).

4. Letter, VYNPC to USNRC, TVY 88-45, dated June 2, 1988.

l 5. Vermont Yankee Procedure OP-5220 "Limitorque Operator Inspection," Revision 10 dated January 27, 1989.

6. Vermont Yankee Drawing No. A191360, " Limit Switch end Torque Switch Settings," Revision 0, dated January 17, 1989.

7. Vermont Yankee Procedure OP-5219, "MOUATS Testing of Motor-Operated Valves," Original, dated December 8, 1988.

8. General Electric NEDC-31322, "BWR Owners' Group Report on the Operational Design Basis of Selected Safety-Related Motor-Operated Valves," September 1986.

9. General Electric NEDC-31322, "BWR Owners' Group Report on the Operational Design Basis of Selected Safety-Related Motor-Operated Valves," Supplement No.1, July 1988.

7767R

10. Letter, USNRC to Donald N. Grace, Chairman Boiling Water Reactor Owners' Group, dated August 8, 1988.

l l

7767R

~ . ... .

..j"s L l1 e ,

1 1

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ATTACHMENT NO.1 i,

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- LIMIT SWITCH & TOROUE SWITCH SETTINGS-l b

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I

Z O LIMIT SWITCH DEVELOPMENT O z YALVE OPENING FUNCTION CONTACT o NO CLOSE OPEN j 9 - 10 - SP 13 - 14 - SP M 1-2 5-6 11 --12

=

SP OPEN LIMIT OPEN TS BYPASS-15 - 16 SP 3-4 SP T-8 CLOSE TS BYPASS .

I T - 18 - SP -

21 - 22 - SP 25 - 26 GREEN CLOSE LIGHT 29 - 30 SP 2T - 28 - SP 31 - 32 - SP 19 - 20 RED OPEN LIGHT 23 - 24 SP ROTOR SETTING (% VALVE OPEN)

ROTOR #1 95 ROTOR #2 E0-25  ;

ROTOR #3 95 ROTOR #4 -: 1 TOROUE SWITCH SETPOINTS (LB THRUST)

CALC MIN. TARGET MAXIMUM OPEN 34T5T 38233 45000 CLOSE 26651 2931T 45000 NOTES:

REFERENCES:

l GENERAL NOTES 1. CWD B191301 SH 1437

2. YNSD CALCULATION YYC ,418 SYSTEM:HPCI THIS DRAWINS FOR VY SERVICE REGi!ESTS VERMONT YANKEE NUCLEAR POWER CORP BB-64 AND 69-21 VERNON. VERMONT FREPARED BY: REVIEWED BY- L1MIT SWITCH 8 TOROUE MA//-#f $2)'l '/7!If

/ TITLE: SWITCH SETTINGS V23-16 REV DESCR]PTION BY CHKD. APPD. DRAW]NG NO. A191360 SH 23-16 0S1 :[ 43.2 ] A3602316.DGN :1

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'l l ATTACHMENT NO. 2 l i

IEB 85-03 MOV.

SUMMARY

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1 IEB 85-03 MOV

SUMMARY

i V A L V E I. D . V13-15 LIMITOROUE OPERATOR- 1 S!ZE SMB-000 MOTOR TOROUE 5 ft-lbs  !

MOTOR SPEED 1700 RPM UNIT SPEEQ. 46 RPM i STEM SPEED, 12 IPM VOLTAGE 460 AC i l

V_AL_VF4 MANUFACTURER WALWORTH TYPE GATE MODEL 5247 PS6 SIZE 3 IN 1 DESIGN PRESSURE 1250 PSID 1

1 SWITCH SETPOINTS:  % OF VALVE OPEN THRUST THRUST OPEN OPEN )

OPEN CLOSE LIMIT BYPASS # ROTORS  !

asz ~ amer :, emmu vrmxx=u: sn===r s=mw~n l AS-FOUND NA 2313 NA 92.5 2 AS-LEFT NA 4,274** 95 NA 2 DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSID THRUST NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1080 PSID DATABASE THRUST fclosel 7089 LBS AT 1080 PSID "

AS-FOUND CONDITION:

FU11 STROKE OPEN AND CLOSE ACTION ASSURED CLOSE T.S. BYPASSED 97% (3% OPEN) INERTIA SEATS VALVE

• • -CLOSE T.S. BYPASSED 99% (1% OPEN) INERTIA SEATS VALVE 1 <

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IEB 85-03 MOV

SUMMARY

VALVE !.D. V13-16 LIMITOROUE OPERATOR:

fi[KE SMB-000 MOTOR TOROUE 5 ft-Ibs MOTOR SPEED -1900 RPM UNIT SPEED 48 RPM STEM SPEED 12 IPM . . VOLTAGE 115 DC VALVE:

MANUFACTURER WALWORTH TYPE GATE MODEL 5247 PS6 SIZE 3 IN DESIGN PRESSURE 1250 PSID SWITCH Sl?TPOIb7TS:  % OF VALVE OPEN THRUST THRUST OPEN OPEN OPEN CLOSE LIMIT BYPASS # ROTORS AS-FOUND mmmmmmmamawmamexwammuuamm=m 6090 4235 NA 89.3 2

AS-LEFT 8511 7611 99 26 4 DIFFERENTIAL PRESSURE TEST: NO IEET PRESSURE NA PSID THRUST NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1080 PSID DATABASE THRUST fclose) 7089 LBS AT 1080 PSID AS-FOUND CONDITION:

FUIL CWSE ACTION NOT ASSURED (AS FOUND CWSE THRUST LESS THAN CURRENT DATABASE THRUST)

CLOSE T.S. BYPASSED 93% (7% OPEN) INERTIA MAY NOT FUILY SEAT VALVE L_________________

'b~ .O; ,

, :IEB 85-03 MOV

SUMMARY

VALVE I.D. V13-18 '

l, LIMIMROUE OPERATOR:

SIZE iSMB MO'IDR MRQUE -5 ft-lbs  !

MOTOR SPEED 1900- RPM UNIT SPEED 24: RPM STEM SPEED 12: IPM - VOLTAGE 115'DC ,

VALVE:

MANUFACTURER .WALWORTH TYPE ' GATE MODEL 5206 WE SIZE f6 IN DESIGN PRESSURE 150- PSID. '

SWITCH SETPOINTS:  % OF VALVE OPEN . ^

THRUST. THRUST- OPEN .. OPEN OPEN. CLOSE LIMIT BYPASS # ROTORS =

mamaremmemmem--mwammammwnwwmmme AS-FOUND 10700 '10760 .NA 6.9 2 AS-LEFT 8446 8232 98- 27 4 DIryEMEhmAL PRESSURE TEST: NO )

TEST PRESSURE NA PSID THRUST 'NA- LBS.- 1 THRUST AT CST LBS. MIN OPEN BYPASS l

.NA -NA' .% i EXTRAPOLATED THRUST NA ~ LBS' AT 44.6 PSID j DATABASE THRUST (closel 5559 LBS AT 44.6 PSID. 1 AS-FOUND CONDmON: -l FULL STROKE OPEN AND CLOSE ACTION ASSURED 1 .l

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IEB 85-03 MOV

SUMMARY

VALVE I.D. V13-20 LIMITOROUE OPERATOR:

SIZE SMB-00 MOTOR TORQUE 7.5 ft-lbs MOTOR SPEED 1900 RPM UNIT SPEED 48 RPM STEM SPEED 12 IPM VOLTAGE 125 DC VALVE:

MANUFACTURER WALWORTH TYPE GATE MODEL 5247 PSB SIZE 3 IN DESIGN PRESSURE 1500 PSID SWITCH SETi'OINTS:  % OF VALVE OPEN THRUST THRUST OPEN OPEN OPEN CLOSE LIMIT BYPASS # ROTORS n=me=sammanan=nnummanzunuma zwamm AS-FOUND 6518 4573 NA 10.9 2 AS-LEFT 11276 10749 99 26 4 I DImsRENTIAL PRESSURE TEST: NO TEST PRES 3URE NA PSID THRUST NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1009 PSID DATABASE THRUST (close) 9236 LBS AT 1009 PSID AS-FOUND CONDITION:

FULL STPOKE OPEN AND CLOSE ACTION ASSURED i

a IEB 85-03 MOV

SUMMARY

VALVE I.D.- V13 LIMITOROUE OPERATOR:

SIZE SMB MCTIDR TOROUE 7.5 L ft-lbs .

MOTOR SPEED 1900 RPM UNIT SPEED 48 RPM STEM SPEED 12. IPM VOLTAGE 115 DC l

VALVE:

MANUFACTURER 'WALWORTH TYPE, .' GATEL MODEL, 5247. PSB - SIZE 3 IN DESIGN PRESSURE 1500- PSID l SWITCH SETPOINTS:  % OF VALVE OPEN

~ THRUST- THRUST OPEN OPEN  !

OPEN CLOSE: LIMIT BYPASS # ROTORS ~. .l AS-FOUND nummmewarcamannawamarmarmamm===ma

-16692 14147,- NA 90.5 2 AS-LEFT 10833 10715 99 27. 4 j

.(

DIwERENTIAL PRESSURE TEST: NO .

TEST PRESSURE- NA PSID THRUST NA LBS.  !

THRUST AT CST NA LBS. MIN OPEN BYPASS NA. .% ;j EXTRAPOLATED THRUST NA LBS AT 1088 PSID DATABASE THRUST fclose) 9432 LBS- AT. 1088 PSID l 1

I AS-FOUND CONDITION- 1 FULL STROKE OPEN AND CLOSE AC110N ASSURED i

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_U-..-_._ . . _ . - - - -

^ IEB 85-03 MOV

SUMMARY

= * '

VALVE LD. V13 ..

. Lj

, , s LIMITOROUE OPERATOR _

SIZE SMB-00. ' -

MO'IDR 7DROUE 51 ft-lbs ,

MO'IDR SPEED 1900- RPM UNIT SPEED 20.2- RPM STEM SPEED .4 IPM VOLTAGE 125 DC ,

VALVE:

MANUFACTURER ~HANCOCK TYPE  : GLOBE MODEL 7150 w . SIZE 2 IN DESIGN PRESSURE 1250 ' PSID 1 1

SWITCH SETPOINTS:  % OF VALVE OPEN THRUST? THRUST -OPEN- OPEN.

OPEN CLOSE LIMIT BYPASS # RO'IDRS mammawammmmazawamansammamamenwa l AS-FOUND 3540- 5540 NA - 19.8 2--

AS-LEFT 10090 11038- 97, 27 .4 DiwERENTIAL PRESSURE TEST; . NO.

TEST PRESSURE NA' PSID THRUST NA - LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1103 PSID _j DATABASE THRUST fclose) 9076 AT LBS 1103 PSID EUND CONDITION:

FULL CIDSE ACI10N NOT ASSURED (AS FOUND CIDSE THRUST LESS THAN  !

CURRENT DATABASE THRUS'Il l CLOSE T.S. BYPASSED 86% (14% OPEN) INERTIA MAY NOT FULLY SEAT VALVE -

I

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IEB 85-03 MOV

SUMMARY

VALVE I.D. V13-30 LIMITOROUE OPERATOR:

SIZE SMB-0 MOTOR TOROUE 15 ft-lbs MOTOR SPEED 1900 RPM UNIT SPEED 24 RPM STEM SPEED 6 IPM VOLTAGE 115 DC l l

i VALVE:

MANUFACTURER WALWORTH TYPE GLOBE MODEL 5301 PSB SIZE 4 IN DESIGN PRESSURE 1500 PSID i i

SWITCH SITTPOINTS:  % OF VALVE OPEN )

THRUST THRUST OPEN OPEN  !

OPEN CLOSE LIMIT BYPASS # ROTORS m=wransaxanz==anaxen=amw=mxmezumm=a AS-FOUND 9850 4680 NA 90.1 2 AS-LEFT 16077 15052 95 23 4 .

DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSID . THRUST NA LBS.

THRUST AT CST NA. LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1077 PSID DATABASE THRUST fclose) 14217 LBS AT 1077 PSID AS-FOUND CONDITION:

FUIL STROKE OPEN AND CLOSE ACTION AE6URED CLOSE T.S. BYPASSED 99% (1% OPEN) INERTIA SEATS VALVE

m-

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IEB 85-03 MOV

SUMMARY

4 VALVE LD. V13-39 LIMITORQUE OPERATOR:

l S 12 3 SMB-00 MOTORTORQUE -5: ~ ft-lbs L< MOTOR SPEED 1900 RPM UNIT SPEED RPM-l STEM SPEED 12- IPM VOLTAGE -;115 DC

. VALVE:

MANUFACTURER WALWORTH T1'PE -GATE.

MODEL 5206 WE SIZE 6 -IN L DESIGN PRESSURE 150 PSID SWrICH SETPOINTS:  % OF VALVE OPEN:

THRUST THRUST OPEN OPEN OPEN CLOSE ' LIMIT BYPASS : # ROTORS AS-FOUND ramamewawre-mmmuussammacanermem -

1460 '2320 NA 8.4 2 AS-LEFT 7450 7300 95 23, 4 ';

DIFFERENTIAL PRESSURE TEST- NO TEST PRESSURE NA PSID THRUST ,NA. LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA.  %

EXTRAPOLATED 1ERUST NA LBS- 'AT 22.3 PSID -

' DATABASE THRUST fclose) -5378 LBS AT 22.3 PSID .!

AS-FOUND CONDITION: .i l FULL CLOSE AND OPEN ACrlON NOT ASSURED (AS FOUND THRUST LESS THAN CURRENT DATABASE THRUST)

CLOSE T.S. BYPASSED 95% (5% OPEN) INERTIA MAY NOT FULLY SEAT VALVE i

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IEB 85-03 MOV

SUMMARY

VALVE I.D. V13-41 LIMITOROUE OPERATOR:

S]ZE SMB-00 MOTOR TOROUE 5 ft-lbs MOTOR SPEED 1900 RPM UNIT SPEED 24 RPM STEM SPEED 12 IPM VOLTAGE 115 DC VALVE:

MANUFACTURER WALWORTH TYPE GATE MODEL 5206 WE SIZE 6 IN DESIGN PRESSURE 150 PSID SWITCH SETPOINTS:  % OF VALVE OPEN THRUST THRUST OPEN OPEN OPEN CLOSE LIMIT BYPASS # ROTORS m=mnanuara mmnnzamnumarnauxxennemmmm AS-FOUND 5400 5600 NA 29.7 2 AS-LEFT 8213 6887 97 27 4 DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSID THRUST NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA 1,BS AT 22.3 PSID DATABASE THRUST fclose) 5378 LBS AT 22.3 PSID ,

AS-FOUND CONDITION:

FULL STROKE OPEN AND CLOSE ACTION ASSURED 1

,3 , . _;  ; L ,

' ~

1 IEB 85-03 MOV

SUMMARY

s i 6 VALVE LD.: - V13-131.- .-

LIMITOROUE OPERATOR:

SIZE SMB-00 .' MOTOR TOROUE L 10- - ft-lbs MO'IDR SPEED 1900-- RPM UNIT SPEED 24 '

RPM'

. STEM SPEED 6- IPM VOLTAGE ' '

115 DC '-

VALVE:

MANUFACTURER WALWORTH 'IYPE GLOBE.

MODEL 5301 WE SIZE 3 =IN DESIGN PRESSURE 1250 PSID ,

SWIKH SETPOINTS:  % OF VALVE OPEN THRUST THRUST OPEN- OPEN OPEN CLOSE' LIMIT.' iBYPASS # ROTORS--

AS-FOUND mmwaremmmmmmarammsawammmmmma -

10200 11040 rNA' 14.1 2 AS-LEFT 13046 13121 ' 95 '- -29 4 DIrrERENTIAL PRESSURE TEST- YES TEST PRESSURE- 998 PSID THRUST 7600 LBS.

THRUST AT CST 8925 LBS. MIN OPEN BYPASS 10.7-  %

EXTRAPOLATED THRUST 8102 LBS AT 1080 PSID DATABASE THRUST Iclosel 11599 LBS AT 1080 PSID AS-FOUND CONDITION:

FUIL STROKE OPEN AND CLOSE ACTION ASSURED

__. _.-_m-- . - - . . . - - - - - - . - - -

h.

. IEB 85-03 MOV

SUMMARY

VALVE I.D. V13-132 -

~

. LIMITOROUE OPERATOR:

SEE ' SMB-00 MOTOR TOROUE -5 - ft-lbs MOTOR SPEED 1900 RPM UNIT SPEED 20.2 RPM STEM SPEED 4 IPM YOLTAGE 125 DC: .

VALVE:

MANUFACTURER HANCOCK TYPE ' GLOBE MODEL 7150 w , SEE 2 IN DESIGN PRESSURE ' 1250 PSID SWITCH SETPOINTS:  % OF VALVE OPEN THRUST . THRUST OPEN OPEN.

OPEN CLOSE LIMIT BYPASS # RO1DRS AS-FOUND . wamawammmmmmmmumusammwanawamt 5900 6660 NA 22.4' 2-AS-LEFT - 11207 11179 97 28 4 DEFERENTIAL PRESSURE TEST- NO TEST PRESSURE NA PSID THRUST. NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS ' NA  %

EXTRAPOLATED

. THRUST NA LBS AT 1107 PSID -

DATABASE THRUST Iclose) 9078 LBS- AT = 1107 PSID -

~ AS-FOUND CONDITION:

i FULL CIDSE ACTION NOT ASSURED (AS FOUND CIDSE THRUST LESS THAN f

CURRENT DATABASE THRUST) j CLOSE T.S. BYPASSED 87% (13% OPEN) INERTIA MAY NOT FULLY SEATVALVE

3 g- -, -

. ., ; ' IEB 85-03 MOV

SUMMARY

L VALVE I.D2 V23;14

, .)

LIMI1DRQUE OPERATOR:

- SIZE; ' SMB-3 MO'IDR TORQUE -80 ft-lbs 1q MOTOR SPEED -1900- RPM IJNIT SPEED 90 ~ RPM j E STEM SPEED .30' 'IPM VOLTAGE '115 DC O t

i VALVE:

MANUFACTURER WALWORTH 'IYPE GATE MODEL - 5247 PSB SIZE : l'0 ' IN L DESIGN PRESSURE 1250 PSID i

SWITCH SETPOINTS:  % OF VALVE OPEN THRUST THRUST ~ OPEN OPEN-OPEN' CLOSE. LIMIT BYPASS # RO'IDRS maammanumsmewanavnwramaneamenmamaxm AS-FOUND 37668 32262 NA- 90.6- '2 AS-LEFT 41795 35149 96 21 4 i i

1 DIFFERENTIAL PRESSURE TEST: YES  !

TEST PRESSURE THRUST AT CST 998 PSID THRUST 22800 . LBS. j 25997 LBS. MIN OPEN BYPASS '18.3 % i EXTRAPOLATED

-THRUST 24244- LBS AT - 1080 PSID DATABASE THRUST fclosel 26651- LBS AT 1080 PSID j AS-FOUND CONDITION:

Full STROKE OPEN AND CLOSE ACTION ASSURED

m- ---. .

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,' IEB 85-03 MOV

SUMMARY

L T

VALVE I.D. . V23- 16 .

LIMITOROUE OPERATOR- 0 SIZE SMB-1 MOIOR TORQUE .

' 40 - - ft-lbs ,,

MOTOR SPEED i1900 RPM UNIT SPEED 36' RPM STEM SPEED 12 IPM VOLTAGE . 115 DC j

d u

VALVE: -I MANUFACTURER WALWORTH IXPE GATE.

MODEL  : 5247 PSB ..

SIZE .10 IN '!

DESIGN PRESSURE .1250- PSID j i

2 SWrITH SETPOINTS: _ % OF VALVE OPEN THRUST THRUST OPEN> OPEN. i OPEN CLOSE LIMIT . BYPASS - # RO'IVRS .

ammarammweswmmmmwammawmauwammese AS-FOUND 60200 61375 .NA- 2 AS-LEFT 28514 28339. 95 23 4' Li I

DIryERENTIAL PRESSURE TEST: NO ..

q TEST PRESSURE NA PSID THRUST NA LBS.  ;

THRUST AT CST NA LBS. MIN OPEN BYPASS - NA'  %  ;)

EXTRAPOLATED :i THRUST NA LBS AT 1080 PSID l I

. l DATABASE THRUST (close). 26651' LBS 'AT 1080 PSID 1 AS-FOUND CONDITION-FULL STROKE OPEN AND CIDSE ACrlON ASSURED I

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, s-A,

' IEB 85-03 MOV

SUMMARY

VALVE I.D.' LV23-171 LIMI1DROUE OPERATOR: .r .

SIZE . SMB MCrIDR TOROUE -15 ft-lbs ? 1 1

MOIDRSEEED 1900 ' RPM UNIT SPEED ~36: RPM j STEM SPEED 12 IPM , VOLTAGE , 125 DC.

o f

VALVE:- a MANUFACTURER WALWORTH DTE ' GATE-MODEL . 5202WE SIZE 14 IN' <

u DESIGN PRESSURE '100' PSID SWITCH SETPOINTS:  % OF VALVE OPEN.-

THRUST.. THRUST OPEN OPEN OPEN .CLOSE LIMIT - BYPASS ;# ROTORS mamsamaswmmmunwarrmamwammes---eem AS-FOUND 19900 23340 2 NA .; 7.4 : '2 AS-LEFT 10960- 12260 95 23 4-DIFFERENTIAL PRESSURE TEST: NO: )'

l TEST PRESSURE NA PSID- THRUST ~NA- LBS.

THRUST AT CST NA LBS. . MIN OPEN BYPASS .NA-  %

EXTRAPOLATED THRUST NA- LBS AT 45.9 PSID '

I-  ;

! - DATABASE THRUST fclosel 8118 LBS AT 45.9 PSID AS-FOUND CONDITION:

FUIL STROKE OPEN AND CLOSE ACI1ON ASSURED i l

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SUMMARY

4 u

VALVE LD. < V23-19 ,

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LIMITORQUE OPERA'IOR:

SIZE SMB-4 -- MOTOR'IUROUE 200- ft-lbs MOTOR SPEED ~1900 RPM UNIT SPEED ;126: RPM STEM SPEED 42' . IPM > VOLTAGE 115 DC:

t L VALVE:

MANUFACTURER ' WALWORTH IXEE GATE MODEL 5247 PSB SIZE 14 IN:

DESIGN PRESSURE >1250- PSID SWITCH SETPOINTS: .% OF VALVE OPEN ;

THRUST'- THRUST. OPEN OPEN. -l OPEN- CLOSE LIMIT BYPASS .# ROTORS -!

AS-FOUND nummmananwemanamnummwrcausswarma '

177745 105275- ~NA 91.6 ~2 AS-LEFT 38162 46865, ~95 '23 4 y DIrrEREhTTIAL PRESSURE TEST: NO

, j TEST PRESSURE NA PSID THRUST NA LBS.

THRUST AT CST NA LBS.-

.l MIN OPEN BYPASS NA  % .j EXTRAPOLATED 5I

- THRUST. NA- LBS' AT 1227 PSIDI I

, DATABASE THRUST (close) , 46168 'LBS AT. 1227 PSID:. '

l AS-FOUND CONDITION:

FULL STROKE OPEN AND CLOSE ACTION ASSURED l

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--w--_._--n_-L-.n. . _ . - - _ - - . _ - - - - _ . _ . _ _ _ , - _

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I

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4- .

IEB 85-03 MOV

SUMMARY

d I

' VALVE I.D. IV23-15 ,

LIMITOROUE OPERATORi-SIZE ' SMB-0 MQIDR'IDRQUE.. L 40- ft-Ibs q MOTOR SPEED ^ 1800~ RPM UNIT SPEED 36 . RPM -

STEM SPEED 12 IPM VOLTAGE l460 AC

'i i

.- VALVE: J MANUFACTURER WALWORTH TYPE ~ ' GATE-MODEL 5247 PSB . SIZE ,

10 - IN :

DESIGN PRESSURE 1250 PSID SWITCH SETPOINTS:  % OF VALVE OPEN THRUST THRUST ._ OPEN OPEN OPEN- .CLOSE. LIMIT . BYPASS 1# ROTORS I maraememmmwemmemmenmm2mmmmwsemm AS-FOUND ~ .14360- 15469 .NA 93.9- 2 AS-LEFT .26618 28135 95- 23 4 DIrrERENTIAL PRESSURE TEST: NO TEST PRESSURE - NA- PSID 'IERUST NA LBS.

THRUST AT CST :NA LBS. MIN OPEN BYPASS NA  %

EXTRAPOLATED THRUST NA LBS AT 1080 PSID DATABASE THRUST fclosel 26165 LBS AT' !1080 PSID L.

- AS-FOUND CONDITION:

FUIL CLOSE ACrlON NOT ASSURED (AS FOUND CIDSE THRUST LESS THAN CURRENTDATABASE THRUST)

CLOSE T.S. BYPASSED 93% (7% OPEN) INERTIA MAY NOT FUl1Y SEAT VALVE

_-l

+

IEB 85-03 MOV

SUMMARY

q VALVE I.D. V23-20 l l

l 1

-LIMITOROUE OPERATOR: ,

l SIZE SMB-4 MO1DR TOROUE '200 ft-lbs MOTOR SPEED 1900 RPM UNIT SPEED '126 RPM ,

STEM SPEED 42 IPM VOLTAGE 115 DC VALVE: i MANUFACTURER WALWORTH ' TYPE  ; GATE' MODEL 5247 PSB - SZE 14 IN  ;

DESIGN PRESSURE 1250 PSID SWITCH SETPOINTS:  % OF VALVE OPEN l THRUST THRUST .OPEN OPEN  ;

OPEN CLOSE LIMIT BYPASS # ROTORS i weeranwemmamemarmxmmmmmumawamm=m i AS-FOUND 97909 301121 NA 10.2- 2 AS-LEFT 70000- 69050 .95 23 4 .j DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSID THRUST NA- LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  % i EXTRAPOLATED THRUST NA LBS AT 1221 PSID '

DATABASE THRUST fclosel 46022 LBS AT 1221 PSID AS-FOUND CONDITION:

FULL STROKE OPEN AND CLOSE ACTION ASSURED i

= _ - - _ _ - - - - _ - __:__--__-_-_. _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ - _ - - -

,, ..., 3 .

IEB 85-03 MOV

SUMMARY

VALVE I.D. - V23-21

' LIMITOROUE OPERATOR:

$1/4 SMB-3 MO'IDR 'IOROUE 60~ . ft-lbs MOTOR SPEED ' 1900 RPM UNIT SPEED 24 RPM STEM SPEED 6 'IPM VOLTAGE 115 DC VALVE:

MANUFACTURER WALWORTH TYPE GIDBE -

MODEL 5301 PSB SIZE 10 IN DESIGN PRESSURE 1250 PSID SWITCH SETPOINTS:  % OF VALVE OPEN THRUST . THRUST- OPEN OPEN OPEN CLOSE LIMIT BYPASS # ROTORS wwwanwamawamwammamawamumemamawan AS-FOUND 119500 126491 NA 9.1 2 AS-LEFT 90900 90000 95 22 4 DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSID THRUST .NA LBS.

THRUST AT CST NA LBS. MIN OPEN BV2 ASS NA  %.

EXTRAPOLATED n THRUST NA LBS- AT 1305 PSID DATABASE THRUST felose) 68644 .LBS AT 1305 PSID AS-FOUND CONDITION:

Full STROKE OPEN AND CLOSE ACTION ASSURED

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,v. 2-1 2 1 IEB 85-03 INOV"

SUMMARY

q 7 1 1 i VALVE I.D.'. V23-25 o

N LIMITOROUE OPERNf0R*

SIZE  : SMB-1 MOTOR 'IDRQUE 40 ft-lbs; MOTOR SPEED '1900- RPM UNIT SPEED 96l RPM STEM SPEED :24 IPM VOLTAGE 115 DC ;

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VALVE:

MANUFACTURER WALWORTH DTE GLOBE.

MODEL 5301 PSB SIZE '4. IN!

. DESIGN PRESSURE 1250 PSID fj l SWITCH SETPOINTS:  % OFVALVE OPEN 'f THRUST- THRUST ~ OPEN. =OPEN.

OPEN CLOSE LIMIT - BYPASS # ROTORS AS-FOUND mwamemmanummmmwammmmmmmemmamwamm 10304 4620 NA- 94.7 2 AS-LEFT ~ 14000 16580 95 23 4 DIFFERENTIAL PRESSURE TEST- NO . .

y TEST PRESSURE NA PSID . THRUST -NA LBS.. .l THRUST AT CST NA LBS. MIN OPEN BYPASS NA.  %

EXTRAPOLATED THRUST NA LBS AT. 1368 PSID .

. DATABASE THRUST fclose) 15711~ LBS- AT 1368 PSID -l q

AS-FOUND CONDITION:  !

' FULL CLOSE ACTION NOT ASSURED (AS FOUND CLOSE THRUST LESS THAN ,  !'

CURRENT DATABASE'IMRUSI)

CLOSE T.S. BYPASSED 91% (9% OPEN) INERTIA MAY NOT FULLY SEAT VALVE

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IEB 85-03 MOV

SUMMARY

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VALVE I.D. V23-57 I

LIMITOROUE OPERATOR:

S17E SMB-1 MOTOR TOROUE 25 ft-Ibs '

MOTOR SPEED 1900 RPM UNIT SPEED 36 ' RPM I STEM' SPEED 12 IPM VOLTAGE 115 DC VALVE: j MANUFACTURER WALWORTH TYPE GATE MODEL 5206 WE ,SJZR 16 IN I DESIGN PRESSURE 150 PSID I

SWITCH SETPOINTS:  % OF VALVE OPEN THRUST THRUST OPEN OPEN l OPEN CLOSE LIMIT BYPASS # RO'IORS {

umwnwarmr*wwwcamzenasmaamamenwamuna l AS-FOUND 15960 23840 NA 6.4 2 l AS-LEFT 27060 24820 95 23 4 i

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DIFFERENTIAL PRESSURE TEST: NO TEST PRESSURE NA PSIDj, THRUST NA LBS. .

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  % ,

EXTRAPOLATED '

THRUST NA LBS AT 55.5 PSID DATABASE THRUST Iclose) 9403 LBS AT 55.5 PSID AS-FOUND CONDITION:

FULL STROKE OPEN AND CLOSE ACrlON ASSURED

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' IEB 85-03 MOV

SUMMARY

i VALVE I.D. ' V23-58 '

r. . .

LIMITOROUE OPERATOR:

SIZE SMB MOTOR'IDROUE 25~ ft-Ibs -

MOTOR SPEED 1900. RPM UNrr SPEED 36 . RPM STEM SPEED 12- ' IPM VOLTAGE 115 DC VALVE: >

MANUFACTURER WALWORTH JYEE GATE:

MODEL 5206 WE SIZE 16- IN' DESIGN PRESSURE 150 PSID SWITCH SETPOINTS:  % OF VALVE OPEN

~

THRUST THRUST OPEN OPEN OPEN CLOSE .. LIMIT BYPASS .# RO'IVRS-amemramumwamemammsnmunmannummman ,

AS-FOUND 16520 19860 NA. 6.4 2 AS-LEFT 12500 10343 95 23 4 DIFFERENTIAL PRESSURE TEST: NO ,

TEST PRESSURE NA PSID THRUST

~

NA LBS.

THRUST AT CST NA LBS. MIN OPEN BYPASS NA  % ,

EXTRAPOLATED  !

THRUST NA LBS AT 55.5 PSID .

l DATABASE THRUST fclosel 9403 LBS AT 55.5 PSID .!

' AS-FOUND CONDIT10N: 'l i FULL STROKE OPEN AND CLOSE ACDON ASSURED

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