ML20205M703

Rev 0 to Nuclear Engineering Procedure NEP-091, Motor- Operated Valve (MOV) Data Evaluation

ML20205M703
Person / Time
Site:	Davis Besse
Issue date:	03/25/1986
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20205M679	List: ML20205M676 ML20205M698 ML20205M703 ML20205M717
References
NEP-091, NEP-91, TAC-59702, NUDOCS 8604150349
Download: ML20205M703 (22)

Text

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e P'SpCEDURE TITLE SHEET ED 1171 TITLE No. NEP-091 ToLEco NUCLEAR ENGINEERING REVISloN 0 EDISON PROCEDURES MANUAL PAGE 1 oF6

/^T SU BJECT EFFECTIVE DATE INITf ATED BY

$  ! Nuclear Motor-Operated Valve 03/25/86 Engineering Group (MOV) Data Evaluation ,, pf ,

SUPERSEoES APP oV pY( vision oirec pf ~~/ d[2g NFEI-090.1, Rev. 1 J gy/jfy f /j{

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PURPOSE 1

This procedure provides the methods and corrective actions required to '

verify the design and ability of Limitorque Motor Operated Valves (MOV's) to perform their intended function under normal, upset, emergency and faulted conditions. First time use of this procedure will produce acceptable baseline data for use in trending and predictive maintenance.

SCOPE This procedure applies to all Limitorque Motor Operated Valves types SMB and SMC, and shall be performed when invoked by MP 1410.32 " Testing of Motor Operated Valves Using MOVATs."

RESPONSIBILITY l ) The Nuclear Engineering Group Director is responsible for the preparation, and

\- /' use of this procedure by engineers who have received the following training:

1. Principles of operation of Limitorque Operators.

2. Interpretation of MOVATs Field Data.

These courses can be administered by certified contract personnel or similar courses developed by the Nuclear Training Division.

DEFINITIONS Torque Seated Valve - Gate or globe valves requiring torque switch activation to provide tight shutoff.

l Position Seated Valve - Valves which are positioned by limit switch, i.e. l quarter turn valves and diaphragm valves. l MOVATs - Motor Operated Valve Analysis and Test System. l REFERENCES Toledo Edison Drawings

,, 7749-E-15 MOV Data List

/ s t l pp DO K O O P

j ..

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PROCEDURE CONTINUATION SHEET ,

E D 7171 A SUWECT EFFECTIVE DATE FAGE No.

MOV Data Evaluation 03/25/86 2 o, 6 NEP-091 I

Nuclear Engineering Procedures Manual il NEP-010 Processing Facility Change Requests NEP-050 Processing Surveillance Reports NEP-060 Processing Nonconformance Reports Supplier Deviation Reports and Supplier Deviation Disposition Requests NEP-080 Calculations NEP-090 Design Verification NEP-092 Establish D/P Limits and Tests for Motor Operated Valves l Davis-Besse Maintenance Procedures MP-1410.32 Testing of Motor Operated Valves using MOVATS MP-1411.04 Maintenance and Repair of Limitorque Valve Operators Types SMB-000 and SMB-00 MP-1411.05 Maintenance and Repair of Limitorque Valve Operators Types Types SMB-0 through SMB-4 MP-1411.06 Preventive Maintenance for Type SMB and SMC Limitorque Valve Operators MP-1411.07 Maintenance and Repair of Limitorque Valve Operators Type SMC-04 A. OBTAINING INITIAL DATA Responsibility Action Responsible Engineer 1. Determines the valve specification number. { }

(Analyst)

2. Obtains a copy of original engineering speci-fication data sheets and QA receiving document data sheets related to pressure tests and actuator tests if available.

3. Obtains from the valve supplier the data noted on the Valve Manufacturer's Data Sheet (Exhibit I).

4 Obtains from the operator / supplier the data noted on the Limitorque Data Sheet (Exhibit II) .

5. Obtains the MOVATS data from maintenance l as shown on the MOVATS Report (Exhibit III)

6. Obtains f rom Exhibit II of NEP-092, maximum differential pressure limit.

l

7. Obtains Field Walkdown Data on Stem Dimensions for Rising Stem Valves from maintenance. i l I

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PROCEDURE CONTINUAllON SHEET EO 7171 A SuoJECT EFFECTIVE DATE PAGE N O.

MOV Data Evaluation 03/25/86 3 o, 6 NEP-091 B. INITIAL DATA ANALYSIS Responsibility Action Responsible Engineer 1. Compares supplier data on Exhibits I (Analyst) and II to data obtained in Step A.2 to ensure that the data agrees with design documents.

2a. Compares the data in the MOVAT's Report (Exhibit III) to the supplier data on the Manufacturer's and Limitorque Data Sheets (Exhibit I and II) to assure that Exhibit III data agrees with supplier data. Where conflicts exist, checks to see if the original design has been modified by an FCR and reverify all data until conflict is resolved.

2b. Compares the maximum D/P from Step A-6 to the Rated D/P from the Manufacturer's Data Sheet (Exhibit I) to ensure the value meets or exceeds the maximum D/P condition. Corrective s

action in accordance with approved

) procedures shall be taken if Limiting D/P

/ exceeds rated D/P.

3. Compares field walkdown data of Step A-7 to the Manufacturer's Data Sheet (Exhibit I) to ensure valve has Acme Threads and Data on Dimensions agree.

4. Evaluates Thrust signatures for any anomalies. Thrust signatures for position seated valves can only be evaluated for anomalies since thrust numbers are not obtained by the MOVATS equipment for these valves. All anomalies shall be resolved and documented in the evaluation package.

Sa. Thrust Values for torque-seated valves shall not exceed the maximum yield point of the weakest valve member as shown on Exhibit I.

Sb. Thrust Values at Control Switch Trip (CST) will be compared to values in the Manufacturer's Data (Exhibit I) for, rated temperature and pressure.

These values will be evaluated by the

((s,/) Responsible Engineer to determine acceptable variation based on the size of valve, thrust required and type of actuator.

l

~ l PROCEDURE CONTINUATI'ON SHEET ED 7171 A )

SU BJECT EFFECTIVE DATE PAGE N o.

MOV Data Evaluation 03/25/86 4 o, 6 NEP-091 Responsibility Action Responsible Engineer Sc. Any unsatisfactory results from (Analyst) Steps 5a or 5b will be resolved (Continued) via written communication with the appropriate vendor and becomes a part of this evaluation package for permanent retention.

6. Torque Switch (T.S.) set points in the MOVATS Report (Exhibit III) shall equal 7749-E-15 recommended values.

7749-E-15 settings that do not provide the thrust required for rated conditions per Exhibit I shall be modified using the FCR process to provide the appropriate thrust, or brought to resolution through correspondence with the vendor, which will be included as a part of this evaluation package.

7. Torque switch bypass limit

' switches on wedge type valves tested at zero D/P shall have been set in l l accordance with M.P. 1410.32. For valves being D/P tested, evaluates the time the torque switch is bypassed to ensure the zero D/P setting is sufficient to prevent torque switch trip during valve unseating.

8. Compare MOVATS Report (Exhibit III) "Open and Close Control" to verify that the correct control method is being used for the valve being evaluated.

a. Closing travel is stopped using torque swith for wedge-seated valves,

b. Open travel is stopped using the limit switch for single seated valves.

c. Open travel is stopped using the torque switch for double acting valves that are torque seated in both directions.

l I

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PROCEDURE CONTINUATION SHEET ED 7171 A SuaJECT EFFECTIVE DATE PAGE No.

f_

i- MOV Data Evaluation 03/25/86 5 o,- 6 NEP-091 4

'- Responsibility Action l

Responsible Engineer d. Close travel is stopped

(Analyst) using the limit switch for i

(Continued) all position seated valves.

i  :

9. Confirms from MOVATS trace for thrust (close to open) that the thrust does not have a significant increase. (near the time of opening the limit switch) from the average running thrust at the end of the open stroke for l

! single seated wedge valves. This ensures the valve disc is not hitting back seat. i 4 Double seated valves have a thrust increase for both seats.

10. The MOVATS trace-for thrust

. average run values should be analyzed for anomalies of average i running thrust. If values of thrust are questionable, resolves questions through investigation and i f retest, or if necessary contacts "

} appropriate vendors. Includes

][ documentation in the evaluation-package, j 11. Determines from the MOVATS Test Report (Exhibit III), the average run current.

This value shall not exceed nameplate running current by more than 10 percent.

Actuators that do not meet this criteria will be evaluated using motor performance curves where available, and when not l available by Limitorque Corp., for j equipment life reliability. A copy of this j evaluation from Limitorque is to be

attached to this evaluation.

t

! 12. Confirms that the "As Left" Limit Switch

[ settings.per the MOVATS Report (Exhibit III) j conform to the settings indicated on the i

elementry wiring diagrams for the valve being evaluated. If not, initiates action. >

> to have the limit switches reset in the t

field or change the elementary wiring

diagram if "As Left" settings are necessary for proper valve operation.

13. Completes the MOV Data Evaluation Sign

! Off Sheet (Exhibit IV).

Responsible Engineer 14. The data evaluation package shall be (Checker) checked by another Responsible Engineer

.j and signed and dated.

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PROCEDURE CONTINUATION SHEET ED 717UA SUBJECT EF FECTIVE DATE PAGE No.

MOV Data Evaluation 03/25/86 6 o, 6 NEP-091 Responsibility Action Responsible Engineer 15. Supplies a copy of the M0 VATS Report (Checker) (Exhibit III) for the satisfactorily (Continued) evaluated valve to Performance Engineering for use in trending and _

predictive maintenance evaluation.

16. Notifies Maintenance Engineering upon completion of data evaluation.

Department Secretary / Clerk 17. Establishes and maintains original "MOV Evaluation Files" which contains all documents gathered and generated during performance of this procedure.

18. Fowards a copy of the "MOV Evaluation Files" or any updates to these files to Records Management for microfilming and permanent file retention.

C. OBTAINING SUBSEQUENT DATA Responsibility Action Responsible Engineer 1. Cbtains the MOVATS Report (Exhibit l l (Analyst) III) from maintenance.

2. Retrieves the items listed in Steps A-1 through A-7 from the valve file.

D. SUBSEQUENT DATA ANALYSIS Responsibility Action Responsible Engineer 1. Proceeds to Part B and performs steps (Analyst) B-1 through B-12.

2. Compares previous evaluation (Exhibit III) information to current evaluation (Exhibit III) informatien. Evaluates and investigates to determine the root cause of any changes. Initiates corrective action.

3. Proceeds to Part B and performs Steps B-13 through B-18.

EXHIBITS I -

Valve Manufacturer's Data Sheet l II -

Limitorque Data Sheet l l l III - MOVATS Report , j IV - MOV Data Evaluation Sign Off Sheet l PD 3905P/091 l

-i

PROCEDURE CONTINUATION SHEET ED 7171 A SuwJECT EFFECTIVE DATE FAGE No.

NEP-091 MOV Data Evaluation 03/25/86 1 o,1 EXHIBIT I t 3 (s/ Motor Operated Valve (MOV) Design: Valve No. (TED)

Manufacturer:

Valve Drawing No. (MFR):

Stem Material:

Disc (Trim) Mat'l Body Mat'l Stem Diameter-Minimum (inches) Stem Thread Diameter (inch)

Stem Pitch (inch / thread) Lead (No. of Threads)

Valve Serial No. Actuator Serial No.

Rated Temperature (F) Rated Pressure (Psig)

Hrdrotest (Psig)-Body Seat Differential Pressure Test W/ Operator - Psig Valve Stem Thrust (or Torque) Required to Actuate:

A. At Ambient Temperature and Zero Pressure

1. To Close-LBS (or FT-LBS) MSY7" 7

2. To Open-LBS (or FT-LBS) , _

v a-s w - v - .a w --J B. At Rated Temperature & Rated Pressure

1. To Close-LBS (or FT-LBS)

2. To Open-LBS (or FT-LBS)

C. At Rated Flow Conditions

1. To Close-LBS (or FT-LBS)

2. To Oper.-LBS (or FT-LBS)

Maximum Stem Thrust at which point the weakest Valve Member will yield:

a. In the Close Direction (LBS) the Weakest Member is

b. In the Open Direction (LBS) r8

/ the Weakest Member is

PROCEDURE CONTINUATION SHEET E D 7171 A SUBJECT EFFECTIVE D ATE WAGE N o.

MOV Data Evaluation 03/25/86 1 op 1 EX1HBIT II l I Operator Design: Valve No. (TED)

Manufacturer:

Operator Drawing No.

Model No. or Size Order No. Serial No.

Torque Switch Calibration label information (including springpack data and preload):

Attach torque switch setting chart with acceptance range indicated.

Torque Switch set points & stroke time at di.fferential pressure test by MFR:

a. Close to open set point  ; Stroke time (seconds)

b. Open to close set point  ; Stroke time (seconds)

c. Differential pressure at which A & B obtained Motor speed (rpm)  ; Gear ratio Overall actuator ratio  ; Stalled rotor amperage

{ }

Running amperage  ; and Voltage Locked rotor torque @  % of Rated Voltage Running torque (FT-LBS)

AC DC Type of winding Maximum Stem Thrust and torque (thrust as a minimum) at which operator damage will occur:

a. Close to Open Direction (LBS/FT-LBS) A rm m r- m -

the Weakest Member is [ (bJ 11) V D l U J

('

b. Open to Close Direction (LBS/FT-LBS) _ U _ _ 9 the Weakest Member is With the motor stalled the Maximum Stem Thrust (LBS): l 1

With the motor stalled the Maximum Stem Torque (FT-LBS): I Torque Switch Limiter Plate Setting * (0 pen /Close):

Torque Switch Limiter Plate Identification No. :

• If both Open & Close are the same, indicate this, or list the two values and identify the function of each valve. l l

PROCEDURE CONTINUATION SHEET ED 7171 A cudEcT EFFECTIVE DATE PAGE NO.

NEP-091 MOV Data Evaluation 03/25/86 1 OF 9 EXHIBIT III

) MOVATS REPORT

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XuAAW MOVATS INCORPORATED 2995 JOHNSON FERRY ROAD MARIETTA, GA 30062 j 404-998-3550 December 18, 1985 m ,. ,

1 r D Mr. Jim Long 4 d

Toledo Edison w 6 ib  !

Davis Besse Nuclear Station i 5501 N. SR 2 Oak Harbor, OH 43449

Reference:

Purchase Order No. 065-Q-88755B-NW

Dear Jia:

Under the testing authorized in the above referenced purchase order, please find enclosed the formal detailed signature analysis reports for the following valve (s): I 346-111585-CC1411A l 346-111585-MU12A 346-111685-CF2B 346-112385-CC4100 346-120185-DH830 Delta P 420 p.s.i.

346-120985-CC1338 346-120985-CC1328 346-121085-CC1407A 346-121085-DH9A Delta P 54 p.s.i.

346-121485-SW2928 /

346-121585-CV5017 v Also, included in these reports is a compilation of our comments, as well as recommendations associated with each area of concern.

As you will note in the attached MOV evaluation reports, we have coded or classified each coement as follows:

Code 1 - Strongly recommend that the condition noted be corrected immediately in order to assure continued reliable functioning of the valve.

Code 2 - At the next shutdown, the condition noted should be investigated and perhaps corrected at that time if possible.

PROCEDURE CONTINUATION SHEET I ED 7171 A EFFECTIVE DATE PAGE NO.

SUBJECT EP-091 MOV Data Evaluation 03/25/86 2 o, 9 EXHIBIT III l I Mr. Jim Long Page Two December 18, 1985 1 The condition does not prohibit valve operation at this time, however, under degrading conditions could damage the valve or operator or render them inoperable.

Code 3 - Investigate the concern further the next time this particular valve is scheduled for maintenance. .

Code 4 - Condition noted will not, in our opinion, effect valve operability. No corrective action is recommended and the comment is provided for information purposes only.

Please let us know if you have any questions on the enclosures.

Sincerely, Kelly Eslinger m' Engineering Manager u

j , g J t IME/tt P Enclosure - -- U cc: John Ewald Marlys Bussler l I

PROCEDURE CONTINUATION SHEET ED 7171 A SUBJECT EFF ECTIVE DATE PAGE NO.

NEP-091 MOV Data Evaluation 03/25/86 3 o, 9 EXHIBIT III O

Test I.D. 346-121585-CV5017 Code Comments 4 Thrust, motor current and switch signatures reveal no apparent electrical or mechanical degradations present at this time. ~

Recommendations

1. No corrective action is necessary at this time.

tML1 O

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PROCEDURE CONTINUATION SHEET i E D 7171 A l SUBJECT E FFECTIVE DATE PAGE NO.

49g l MOV Data Evaluation 03/25/86 4 op 9 EXHIBIT III l l MOTOR OPERATED UALVE DATA COMPILED FOR DAVIS BESSE NUCLEAR GENEPATING STATION m-ON DECEMBER 13 1985 Q!

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TEST ID: 346-121585-CV5017 MMMMM SYSTEM MMMMM MMMX OPCRATOR MMMM SYSTEM  : COMPONENT VENTILATION TYPE  : SMB FLCW  : O SIZE t 000 TEMP AMBIENT SERIAL NO. : 212003 PRESS  : ATMOSPHERIC ORDER NO.  : 381631A SFTY REL'D: YES ORIENTATION: HORIZONTAL MMMM ELECTRICAL XMMM MMMMMX VALVE MMMMMM CCNTROL CIR VOLTS: 120 10. NO.  : CV-5017 AC/DC  : AC TYPE  : DAMPER l I OPEN CONTROL  : LIMIT SIZE  : 30*x20" INCH CLOSE CONTROL  : LIMIT BODY ORIENTATION: VERTICAL MCC  : BE1237 INITIAL POSITION: CLOSE SW. SENSING CIR. : VOLTAGE FINAL POSITION  : CLOSE MMMM TORQUE SWITCH (MMM WMMMM MOTOR MMMMM OPEN T.S. SETTING : 1.0/1.0 VOLTS  : 460 AC CLOSE T.S. SETTING: 1.0/1.0 RATED AMPS: 0.95 LIMITER PLATE  : 2.0 SPEED  : 1700 T3 BALANCEABLE  : NO HORSEPOWER: .33 WMMMM TEST EQUIPMENT W M M '4 M LCAD CELL # : N/A--N/A AMP PROBE # : SIMPSCN(20) 00510 MAINFRAME # : 35D02725 l h TMD #  : 7032-025

PROCEDURE CONTINUATION SHEET ED 7171 A SU MECT EFFECTIVE DATE PAGE NO.

NEP-091 MOV Data Evaluation 03/25/86 5 o, 9 EXHIBIT III V

ANALYSIS REPORT PREPARED FOR DAVIS BESSE --.

NUCLEAR GENERATIN3 STATION j  ! l ON DECEMBER 18 1985 s'

________ __-- __-=____________ . - -

TEST ID: 346-121585-CV5017 MMMMMMMMMMMMMMM THRUST SIGNATURE ANALYSIS MMMMMMMMMMMMMMM MOVATS  : TS-0C-49-04 TS-CO-49-05 DAVIS BESSE: TS-0C-66-05 TS-CO-66-06 STROKE TIME  : 11.19 SECONDS STROKE TIME  : 11.135 SECONDS BYPASS TIME  : 0.515 SECONDS BYPASS TIME  : 0.5 SECCNDS THRUST AT CST  : 0.07 V PROTECTION MARGIN : N/A SEAT THRUST AT CST: .005 V ' UNSEATING TIME  : INDETERMINABLE AVE RUN THRUST  : 0.065 V AVE RUN THRUST  : 0.02 V MAX RUN THRUST  : 0.065 V MAX RUN THRUST  : 0.02 V INERTIAL THRUST  : N/QM UNSEATING THRUST  : (PRELOAD TOTAL THRUST  : 0.07 V THRUST AT CST  : N/A TORQUE SW. SETTING: 1.0/1.0 TORQUE SW. SETTING: 1.0/1.0 MMMMMMMMMMMMMMM SPRING PACK CALIBRATION SIGNATURE ANALYSIS MMMMMMMMMMMMMM NO SPRING PACK CALIBRATION SIGNATURE ACQUIRED MMMMMMMMMMMMMMM MOTOR CURPENT SIGNATURE ANALYSIS WMMMMMMMMMMMMVM MOVATS  : CS-0C-49-06 CS-CO-49-07 DAVIS BESSE: CS-0C-66-07 CS-CO-66-08 STROKE TIME  : 11.23 SECCNDS STROKE TIME  : 11.155 SECONDS PEAK INRUSH  : 2.394 AMPERES PEAK INRUSH  : 2.404 AMPEPES AVE. RUN CURRENT  : 0.909 AMPERES AVE. RUN CURRENT  : 0.903 AMPERES MAX. RUN CURRENT  : 0.909 AMPERES MAX. RUN CURRENT  : 0.903 AMPERES SEATING CURRENT  : 0.951 AMPERES END CURRENT  : 0.903 AMPERES M NOT QUANTIFIABLE O\

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PROCEDURE CONTINUATION SHEET l ED 7171 A l SUBJECT EFFECTIVE DATE PAGE NO.

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PROCEDURE CONTINUATION SHEET -

ED 7171 A S U +J E C T E F FECTIVE D ATE PAGE N O.

NEP-091 MOV Data Evaluation 03/25/86 1 o, 2 EXHIBIT IV MOTOR OPERATED VALVE DATA EVALUATION SIGN OFF SHEET Valve No.

Section I - Operator laformation Type Size Serial No.

Order No.

MOVATS Test I.D. No.

The following sections of the procedure were completed: ,

1 SIGN DATE COMMENTS RESOLUTION Al A2 A3 a n iv 7 7

A4 amm\_~ f t, ,

AS i

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A6 A7 B1 B2A B2B B3 B4 BSA .

i BSB j_ , , .

BSC B6 B7 B8

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' 'PRTICEDURE CONTINUATION SHEET E D 717t A SUBJECT E F F ECTIV E D AT E PAGE NO.

NEP-091 )

MOV Data Evaluation 03/25/86 2 op 2 EXHIBIT IV SIGN DATE COMMENTS RESOLUTION B9 i

B10 i B11 O O 7("'7" ""']

B12  !

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B13 l B14 BIS B16 C1 C2 D1 D2 O~ D3 Evaluation Completed Date and Satisfactory Responsible Engineer Checked By: Date Responsible Engineer O

4 Question No. 3.

Confirm that settings for the torque and limit switches do not exceed the

. manufacturer's maximum recommended settings to preclude damage to the

. valve assemblies.

Response to Question No. 3.

l Implementation of NEP-091 is in process.for all NSR-MOVs. Paragraphs B.2a i and B.6. requires comparison of torque switch settings to manufacturer's maximum recommended settings. NEP-091, paragraph B.2a, requires corrective action where dis repancies exist.

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Question No.4.

Confirm that all the threaded stem type NSR-MOV's utilize ACME General Purpose Screw Threads, since that is the only type of thread design addressed in procedures provided.

Response to Question No. 4.

4 All NSR-MOV's are being checked to verify that they utilize ACME General Purpose Screw Threads. As work has been accomplished on each MOV the threads have been checked. The results are then reviewed and verified per NEP-091, paragraph B.3.

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Question No. 5.

Confirm that the torque switch is bypassed for the first 20% to 25%

of total disk travel on the opening cycle of a valve. i

, Response to Question No. 5.

4 The valve operator. torque switches are being set per MP-1410.32, " Testing

-of Motor Operated Valves Using MOVATS", which was modified by "T" MOD, T-9857.

MP-1410.32 requires that the bypass be set at 20, minus O plus 5 percent of stroke time starting at the. point where the valve disc starts to . .

move. If, on the MOVATS thrust curve, it is not possible to identify the-point where the valve disc starts to move, then the bypass is set at 25 to 30% of stroke time starting at the beginning of application of motor current. An information copy of MP-1410.32 with "T" MODS is attached.

i . Confirmation of the bypass setting is provided by Paragraphs-B.7 and B.12 of NEP-091. >

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