ML20204F958

Rev 8 to ASME Code Section XI Inservice Insp & Testing Program & Info Required for NRC Review of Requests for Relief from ASME Code Section XI Requirements

ML20204F958
Person / Time
Site:	Prairie Island
Issue date:	04/19/1983
From:	NORTHERN STATES POWER CO.
To:
Shared Package
ML20204F923	List: ML20204F917 ML20204F958
References
NUDOCS 8305020329
Download: ML20204F958 (21)

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NORTHERM STATES POUER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT DOCKET NOS. 50-282 LICENSE NOS. DPR-42 50-306 DPR-60 ASME CODE SECTION XI INSERVICE INSPECTION AND TESTING PROGPE!

AND INFOR'IATION REOUIRED FOR NRC REVIEW OF REQUESTS FOR RELIEF FROM ASME CODE SECTION XI REQUIREMENTS SUB'!ITTED:

February 1, 1978 REVISED: Revision 1 Septenber 15, 1978 Revision 2 June 8, 1979 Revision 3 September 10, 1979 Revision 4 April 17, 1980 Revision 5 September 3, 1980 Revision 6 July 31, 1981 Revision 7 Decenber 23, 1981 Revision 8 April 19, 1983 O

B305020329 830419 PDR ADOCK 05000282 g

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9 REVISION OF REVISIONS Page No Revision No Page No Revision No Cover 8

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111 Revision 8 April 19, 1983

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2. RE011EST FOR RELIEF ASilE cot 1PO!!ErlT Filf!CTI0ti Code Viv class Cat II, 12 Safety injection Pump Deliver cooling water to the reactor core in 2

event of a loss of coolant accident 11, 12 Containment Spray Pump Provide sufficient heat removal capability to 2

maintain the post accident containment pressure below the design pressure 11, 12 Residual llent Removal Pump Deliver cooling water to the reactor core in the 2

event of a loss of coolant accident 11, 12 Component Cooling Pump Remove heat from components associated with 3

removal of reactor core decay heat under accident conditions l2, 22 Diesel Cooling Uater Pump Remove heat from components that must 3

function during accident conditions 11, 12 Auxiliary Feedua ter Pump Provide for removal of reactor core decay 3

heat upon loss of normal feedwater 121, 122 Control Room Chill Uater Pump Remove heat from areas containing equipment 3

that must function during accident conditions L

b CODE REntIIREt1Er1T Vibration amplitude will not he used to evaluate the condition of the pump as required by IUP-3110, 3210 & 4500.

BASIS

?!o t all Prairie Island pumps are equipped to measure this pa rame t e r.

In addition, vibration amplitude is considered inferior to velocity measurements as a method of determining machine condition.

ALTEUIATE IllSPECTIori (TESTIt!G)

The present surveillance program monitors velocity and uses this data in evaluating operability of the pump.

Instrumentation and acceptance criteria will be consistant with velocity measurement methods and pump characteristes.

U E AS'1E Publicat ions 67-PEtt-14 and 78-UA/flE-5, "ibrat ion Tolerances for Indust ry, vere used as a guide for establishing hhalert and required action ranges, as presented in the attached table.

r 5 O SCilEulli.E FOR litPI.Et1ErlTATIOtl oo G

Si < wnths from the submittal date of Revision 8 0

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d HASIS FOR REOUEST FOR REbTEF #2 Allowable Ranges for Vibration Test Duantities Reference Alert Action Velocity Range Range l:

0fV

<0.15 I"/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3 I"/sec 0.15 I"/sec <- v < 0.3 "/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3 I"/sec I

r, -

t r,

t r

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"/sec < V < 0. 6 "/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3

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"/sec < V < 0. 8 I"/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3 I"/sec Y

$ Definitions: V = reference velocity measurement (unfiltered)

V = surveillance test velocity measurement (unfiltered)

The vibration reference values are the values of vibration after initial installation or rework of the punp with the pump being in good mechanical condition.

above0.k{orapump"/sec, a vibration analysis will be conducted documenting the frequency and amplitude that would be analyze

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If the V increases to a higher value f rom the base value with the pump in good mechanical condit ion or is This analysis will determine whether the vibration is from the pump or other sources. Some examples of such an analysis are:

1) The safety injection, residual heat removal, and containment spray pumps operate at minimun flow during the surveillance testing. 111nimum flow conditions causes higher vibration levels.

2) The cooling uater pumps have a right angle drive which couples the punp to the diesel engine and the gear drive gg is a major contributor to the higher velocity reading.

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$$ 1) The component cooling pump, under certalu plant conditions, operates under low flow conditions and, this again g,$

Icada to higher than normal vibration Icvels.

Experience has demonstrated that measurement of axial vibration on the end cover of the pump can tel1 the operator of possible misalignment of the hearing. The end cover is g

a relatively thin section and amplifies the actual vibration.

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3. RE0llEST FOR REI.TEF ASt!E

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C0f1PotlEf1T Ft1NCTION Code Viv Class Cat II, 12 Component Cooling Pump To remove heat from components associated with 3

removal of reactor core decay heat under accident conditions 12, 22 Diesel Cooling Water Pump Remove heat from components that must 3

function during accident conditions CODE RE0llIREt1EllT Flow instrumentation is not accurate to within !2% as required by IUP-4110.

HASIS The present installed flou instrumentation has an accuracy of 13% and is accurate enough to detect a change in pump condition.

v, I-AI TERilATE IllSPECTION (TESTIt!G)

Presentiv installed instrumentation uill be used to determine flowrate for this test since the 11% increase in the accuracy range of the instrument does not substantially affect our ability to determine the condition of the pump to perform its intended function.

SCilEDill.E FOR It1Pl.E!1ErlTATT0rl Six months from the submittal date of Revision 8 N?

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4. RE0!!EST FOR RELIEF

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AS!!E CottPONErIT FIINCTION Code Viv Class Cat J

121, 122 Diesel Cooling Uater " ump Fuel Oil Transfer To maintain proper fuel oil level in the 3

Pump diesel cooling uater pump day tank.

121, 122, 123, 124 Diesel Generator Fuel Oil Transfer To maintain proper fuel oil level in the 3

Pump diesel generator day tank.

CODE RE0llIRE!!E!U Operational readiness of the pump will not he verified by testing in accordance with Subsection IUP.

1 IIASIS A performance test on the Diesel Cooling Water or Diesel Generator Fuel Oil Transfer pumps conducted in accordance with Section XI in impractical and nnnecessary for the following reasons:

I;n 1.

The fuel oil transfer pumps are submerged in approximately 10 feet of diesel oil and are not installed with instrumentation for measuring bearing temperature or rotor vibration.

u 2.

Pump discharge pressure is very low because of lou resistance of the discharge line.

Discharge pressure is 7

approximately 2.0 PSIC as measured on 0-30 PSIG range gauge.

3.

There are tuo fuel oil transfer pumps for each diesel engine. Failure of one transfer pump will cause an alarm requiring start of the redundant transfer pump.

lletween the failure of one transfer pump and the s ta rt of the second (redundant) pump there is in excess of five hours supply of fuel oil in the day tank at the diesel engine.

l 4.

Each fuel oil transfer pump is test run at least once each month to verify the pump can supply adequate fuel oil to the diesel engine day tank.

5.

A f l ow ra t e tes t of the transfer pumps requires draining and refilling of the diesel day tank.

Such draining and refilling requires opening and closing of manual valves, and thus adds to chances for operator error.

j ALTERfiATE INSPECTIOff (TESTifIG)

The ability of the transfer pump to perforn its function will be demonstrated monthly. The notor's running anperage g g will be measured annually. Tests will be conducted to determine the pumps normal amperage. The results will be

< reviewed uith the manufacturer to determine the acceptance limit.

g g SCllEDIII.E FOR If1PLErlErlTATIOt!

_ cn Six months from the submit tal date of Revision 8 e

7 A

9 RE0 HEST FOR RELIEF ASi1E COr1PONENT FUNCTIOff Code Viv Class Cat SV-33133 Cig Uater to 121 Safeguards Travel Scrn Open to flush traveling screen.

3 B

SV-33134 C1g Water to 121 Safeguards Travel Scrn Open to flush traveling screen.

3 B

SV-33464 12 DCl Uater Pump Air flotor SV A Open to supply starting air for diesel cooling 3

B water pump.

SV-33465 12 DCI Hater Pump Air Pfotor SV B Open to supply starting air for diesel cooling

'3 B

water pump.

SV-33466 22 DCI Uater Pump Air tiotor SV A Open to supply starting air for diesel cooling 3

B water pump.

SV-33467 22 DCI Hater Pump Air flotor SV B Open to supply starting air for diesel cooling 3

B Y

water pump.

E CV-31954 DI Islesel Generator Air Start A Open to supply starting air for diesel generator.

3 B

CV-31955 D1 Diesel Generator Air Start B Open to supply starting air for diesel generator.

3 B

CV-31956 D2 Diesel Generator Air Start A Open to supply starting air for diesel generator 3

B CV-31957 D2 Diesel Generator Air Start B Open to supply starting air for diesel generator 3

B SV-33990 11 Post LOCA 11 Containment Vent Close to allow dilution of containment atmos.

2 B

2 SV-33991 12 Post I.0CA 11 Containment Vent Close to allow dilution of containment atmos.

2 B

2 gg CV-31423 12 DCI Uater Pump.Ickt Clr Outlet Open to supply diesel jacket cooling system.

3 B

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CV-31457 22 DCI Ua ter Pump.Ickt Clr Outlet Open to supply diesel Jacket cooling system.

3 B

30 CV-31682 12 TO Aux Fd Pmp 011 Clr Clg Utr Init Open to supply feed pump oil cooler.

3 B

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9.

RE0liEST FOR RELIEF ASt!E C0tlPONEt1T FUNCTION Code Viv Class Cat CV-31681 11 TD Aux Fd Pmp 011 Clr C1g Utr Init Open to supply feed pump oil cooler.

3 B

SV-33728 121 Cont Room Uater Chlr titr Clr Open to supply chiller motor cooler.

3 H

SV-13766 122 Cont Room Uater Chlr titr Clr Open to supply chiller motor cooler.

3 B

CODE RE0llIREt1ENT Stroke time of the power operated valves will not be measured as required by IUV-3410(c).

BASIS The power operated valves are fast acting lacking indication at the controlling switch, therefore stroke, timing I

described in IUV-3410(c) will not provide the repeatability necessary to measure component ope rabili ty.

Y C

ALTERNATE INSPECTION (Testlug)

SV-31333 and SV-33134 - Clg uater to 121 Safeguards Travel Scrn.

Valves uill be coarse timed using a watch second hand or other device to determine valves open in less than 5 seconds. Opening vilI be deternined by increased pressure downstream of the valve.

SV-33464, 33465, 33466 and 33467 - Diesel Cooling Unter Pump Air tiotor Solenoid Valves.

Valves are pa r t of the diesel cooling vater pump system uhose overall operability is determined by start timing and this timing will be used to determine the operability of the solenoid valves.

Because the SV's are paired to the diesel one could fail and the diesel would still start.

The Air ?!otor exhaust will be checked to verify g g that the individual solenoids are operable, es <

C $ CV-31954, 31955, 31956 and 31957 - Diesel Generator Air Start Control Valves G, Va l ves a re pa rt of the diesel generator system whose overall operability is determined by start timing and this g

timing vill be used to determine the operability of the control valves.

Because the CV's are paired to the diesel, cm one could fall and the diesel would still start.

The stroking of these valves will be observed locally to ensure that both valves function together.

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22. REDIIEST FOR REI.TEF ASffE C0!!PotlE!IT FlINCTION Code VIv Class Cat CV-31923 11 Post LOCA H,, Vent to Annulus Vent containment to shield building to control 2

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combustible gas mixture CV-31929 12 Post LOCA 11,3 Vent to Annulus Vent containment to shield building to control 2

B combustible gas mixture CODE RE0lIIREMEtlT Stroke time of power operated valves will not be measured as required by IIN-3410(c).

BASIS The control valves are designed to modulate open and close to control venting rate of containment to the shield building. The valve position and stroking time are a function of the difference between an air loader (controller) signal an.1 the position of the valve. This difference can not he consistently reproduced, therefore stroke timing

• u, would be a meaningless measure of valve operability.

AI,TERf! ATE INSPECTION (Testing)

The valves will be exercised as cold shutdown by stroking the valve and observing maximum, half maximun, and minimum flow as indicated on flow meters. The flow measured will be the flow that exist between the containment and sheild buildings as generated by the dp as it exists at the time of the test.

This will verify the ability of the CV to control the venting of the containment.

SC11EDIH,E FOR ItiPI,EffENTATION Six months from the submittal date of 3evision 8 NE 28 w

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24. REOllEST FOR RET.IEF AS?fE C0fIPONENT FtINCTION Code V1 v Class Cat 12, 22 Diesel Cooling flater Pump Remove heat from components that must function during accident conditions.

3 11, 12 Component Cooling flater Pumps Remove heat from components associated removal of reactor core decay head under accident conditions

,3 CODE RE0lIIREf tEf1T The hydraulic condition of the pump will not he determined in accordance with Subsection IUP.

IIASIS System design does not allow performance of hydraulic tests at specific reference points. Because of the numerous system loading combinations possible it is not practical to reestablish the exact reference point for the pump test.

Because a repeatable reference point can not be reestablished for each test, the inaccu-acies in determining the pumps hydraulic conditions and code allowable variances in these conditions v,

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(flow and dp) compound the allouable ranges of operation when both flow and dp are compared together.

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The punp flow and pump suction and discharge pressure are recorded. The pump dp is then plotted against flow to determine a " point" on the pump curve. This pump curve was developed from vendor supplied performance and preoperational test data.

AI.TERIIATE It!SPECTIO?! (Testing)

The acceptable range will be between 90.1% and 103.5% of the pump curve. The alert ranges uill be from 85.3% to 90.1% (Iow values) or 103.5% to 105% (high values) of the pump curve. The required action range will be for values less than 85.3% or greater than 105% of the pump curve.

SCtlED111.E FOR I?1PI.Ef f ENTATInf!

Six months from the submittal date of Revision 3 NN Sh GM 2

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61. RFollEST FOR REI.IEF AS)1E C0f!PO!!EllT FUf!CTION Code V1v Class Cat Cl.C IJater to 22 AFLIP 32030 Open to supply river water to 3

R steam gen. in event of loss of condensate.

CI,G tfater to 12 AFUP 32027 Open to supply river water to 3

B steam gen. in event of loss of condensate.

Cf.G trater to 21 AFWP 32026 Open to supply river water to 3

B steam gen. in event of loss of condensate.

Cl.C Ifater to 11 AFLJP 32025 Open to supply river water to 3

H steam gen. in event of loss of condensate CODE REnlilREf!ENT The valves will not be exercised as required by itJV-3520 BASIS The purpose of these valves is to provide a backup supply of makeup to the steam generators. Normal supply is demineralized water f rom the condesate storage tanks (Technical Specification lower volume limit of 100,000 gallons) with backup supply from the river.

These valves receive no auto open signal. They are manually opened. Stroking the valves breaks one of the barriers between the demineralized water and the chenically contaminated river water.

A1.TERf! ATE If!SPECTION (TESTIllG)

>w y Q These valves wilI be stroked if; the unit is at cold shutdown for greater than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the valve test does not p p interfere with heatup, and the valve has not been tested that quarter. The valve will be tested during the p refueling outage if it was not tested that quarter.

eu co ScilElllif.E FOR I f1Pl.Ef f EflTATIO*I Six months from subnittal date of Revision 2

~

1 I

2. RE0liEST FOR REl.IEF ASt1E C0ftP0flE!!T FilflCTIOfl Code Viv Class Cat 21, 22 Safety Inject ion Pump Deliver cooling water to the reactor core in 2

the event of a loss of coolant accident 21, 22 Containment Spray Pump Provide sufficient heat removal capability to 2

maintain the post accident containment pressure below the design pressure 21, 22 Residual lleat Removal Pump Deliver cooling uater to the reactor core in the 2

event of a loss of coolant accident i

21, 22 Component Cooling Pump Remove heat from components associated with 3

removal of reactor core decay heat under accident conditions 21, 22 Auxiliary Feedwater Pump Provide for removal of reactor core decay 3

4 heat upon loss of normal feedwater ha CODE REnllTRFJfEllT

'w b

Vibration amplitude will not he used to evaluate the condition of the pump as required by IllP-3110, 3210 & 4500 ItASIS i

flo t all Prairie Island pumps are equipped to measure this parameter.

In addition, vibration amplitude is l

considered inferior to velocity measurements as a method of determining machine condition.

A1. TERT 1 ATE ItISPECTIOfl (TESTIllC)

The present surveillance progran monitors vibration velocity and uses this data in evaluating operability of the pump.

Instrumentation and acceptance criteria will be consistant with vibration velocity measurement methods and pump j

cha rac te r is t i en. ASf1E Publica t ions 67-pef t-14 and 78-11A/f1E-5.

Vibration Tolerances for Industry, were used as a guide for establishing alert and required action range, as presented in the attached table.

i SCilEDill.E FOR TitPI.EtlEt!TATIOt!

l

> :o oo E N Six months from the submittal date of Revision 8 t

sm 1

P wO l

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IIASIS FOR REOUEST FOR RELIEF #2 Allowable Ranges for Vibration Test Quantities Reference Alert Action Velocity Range Range 0 -<V

< 0.15 I"/sec V

>V

+ 0.2 I"/sec Vt>V + 0.3 I"/sec r, -

t r,

r, 0.I5 I"/sec < V < 0.3 "/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3

"/sec I

r -

t r

t r,

g g

0.3 I"/sec < V < 0.6 I"/sec V

>V

+ 0.2 I"/see V

>V

+ 0.3 I"/sec

- r -

t r

t r

3 3

3 0.6 I"/sec f V

( 0.8 I"/sec V

>V

+ 0.2 I"/sec V

>V

+ 0.3 I"/sec r

1 4

4

.N Definitions: V = reference velocity measurement (unfiltered)

I r

u 6

V = surveillance test velocity measurement (unfiltered)

The vibration reference values are the values of vibration af ter initial installation or rework of the pump uith the pump being in good mechanical condition.

If the V to a higher value from the base value with the pump in good mechanical condition or is above 0.b {or a pump increases"/sec, a vibration analysis will be conducted documenting the frequency and amplitude tha This analysis will deternine whether the vibration is from the pump or other sources. Some examples of such an analysis are:

1) The safety in.jection, resilual heat removal, and containment spray pumps operate at minimun flow during the surveillance testing. flinimum flow conditions causes higher vibration levels.

2) The cooling uater pumps have a right angle drive which couples the pump to the diesel engine and the gear drive is a major contributor to the higher velocity reading.

NN

$ 3) The conponent cooling pump, under certain plant conditions, operates under low flow conditions anil this again H$

l eails to higher than normal vibration levels.

Experience has demonstrated that measurement of axial vibration G@

on the end cover of the pump can tell the operator of possible misalignment of the hearing. The end cover is a relatively thin section and amplifies the actual vibration.

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3. RE0lIEST Folt REl.IEF ASME C0!1P0f!EfiT FilflCTIOff Code Vlv Class Cat 21, 22 Component Cooling Pump To renove heat from components associated with 3

removal of reactor core decay heat under accident conditions CODE RE0llIRE!!EflT Flou instrumentation is not accurate to within 12% as required by IIIP-4110.

ItASIS The present installed flou instrumentation has an accuracy of 13% and is accurate enough to detect a change in pump condition.

F Y.

ALTERflATE It!SPECTInti (TESTIflG) c Presently installed instrumentation will be used to deternine flowrate for this test since the 11% increase in the accuracy range of the instrument does not substantially affect our ability to determine the condition of the pump to perform its intended function.

SCllEDill.E FOR IMPI.EtlEliTATION Six months from the submittal date of Revision 8 N$

28 m

m W

O c'

3 9 RE0!!EST FOR REI,IEF AS?tE C0t1PONENT FliNCTION Code Viv Class Cat SV-33992 21 Post I.0CA 11 Contair. ment Vellt Close to allow dilution of cont atmos 2

B 2

i i

SV-33993 22 Post 1,0CA II Containment Vent Close to allow dilution of cont atmos 2

B 2

CV-31633 21 TD Aux FD Pmp 011 Clr Clg Utr Init Open to supply feed pump oil cooler 3

B 1

j CV-31684 22 TD Aux Fd Pmp 011 Clr Cig Utr Inlt Open to supply feed pump oil cooler 3

B l

j CODE REntIIREMENT Stroke time of the power operated valves will not he measured as required by IWV-3410(c).

4 g

Y i

RASIS l

The power operated valves are fast acting lacking indication at the controlling switch, therefore stroke, timing j

described in lWV-3410(c) will not provide the repeatability necessary to measure component operability.

1 SV-33992 and 33993 - Post I.0CA 11 Containment Vent 2

j Valves ope rat ing time can not he measured, Valves open on a signal from a limit sutich on a motor operated valve, the operating tire of the SV is in milliseconds, (about two orders of magnitude less than the liv cycling time),

the SV's noving parts are totally enclosed, and the SV is not easily accessible. Therefore because the valve i

cycling time is shorter than the actuating time anil there is no means to tell when the valve has closed, stroke timing uould he a neaningless measure of operability. Ilouever testing will verify air flow through the valve has stopped when the valve is operated.

CV-31683 and 31684 - Aux Feedwater Pump 011 Cooler Cooling Uater Inlet Valve

>w E @ Valves receive and open signal from the pump start circuitry which is done remotely. Valves will be coarse

$ 7 timed using a watch hand or other device to determine valves open in less than 5 seconds. Opening will he

- o determined hv local observat ion of valve movement.

I e :2 co 7

cn SCHEI III.E l'OR IMPI.EttEilTATION I

u Six months from the submittal date of Revision 8 i

(es th

[s V

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22. REDtIEST FOR REI.IEF ASf1E COrlPO!!ENT FUtiCTInfl Code Viv Class Cat CV-31924 21 Post I.0CA II, Vent to Annulus Vent containment to shield building to control 2

B

~

combustible gas mixture CV-31930 22 Post I.0CA 11 Vent to Annulus Vent containment to shield building to control 2

B 2

combustible gas mixture CODE REOllIREttEtlT Stroke time of pouer operated valves will not be measured as required by IWV-3410(c).

BASIS N

The control valves are designed to nodulate open and close to control venting rate of containment to the shield i

E building. The valve position and stroking time are a function of the difference between an air loader (controller) signal and the position of the valve. This difference can not he consistently reproduced, therefore stroke timing would be a meaningless measure of valve operability.

AI.TERflATE I?1SPECTIO!1 (Test ing)

The valves will be exercised as cold shutdown by stroking the valve and observing maximum, half maximum, and minimun flow as observed on flow meters.

The flow measured will be the flow that exist between the containment and the shield buildings as generated by the dp as it exists at the time of the test.

This will verify the ability of the CV to control the venting of the containment.

SCif EDill.E FOR I tf PI.Er1Ef!TATION Six months from the submittal date of Revision 8 NE

1

1

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24. REntlEST FOR RET.IEF ASF1E C0t!P0fiENT FilNCTION Code Vlv Class Cat 21, 22 Component Cooling Ila ter Pumps To remove heat from components associated removal of reactor core decay heat under accident conditions 1

CODE RE0HIREffEt!T The hydraulic condition of the pump will nt he determined in accordance with Subsection IllP.

BASIS System design does not allow performance of hydraulic tests at specific reference points. Because of the numerous system loading combinations possible it is not practical to reestablish the exact reference point for the pump test.

Because a repea table reference point can not he reestablished for each test, the

,y inaccuracies in determining the pumps hydraulic conditions and code allowable variances in these conditions y

(flow and dp) compound the allowable ranges of operation when both flow and dp are compared together.

The pump flow and pump suction and discharge pressure are recorded. The pump dp is then plotted against flow to deternine a " point" on the pump curve. This pump curve was developed from vendor supplied performance and preoperational test data.

AI.TEtti! ATE IriSPECTIOf! (Test ing)

The acceptahic range will be hetueen 90.1% and 101.5% of the pump curve. The alert ranges will be from 85.3% to 90.1% (low values) or 103.5% to 105% (high values) of the pump curve. The required action range will be for values less than fl5.3% or greater than 105% of the pump curve.

SCilEDill.C FOR It1Piff1Ef!TATIOff g y Six months from the submittal date of Revision 8 n

co 5

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6 w)

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53. REnllEST FOR REI.IEF AS!!E Cor!PONEffr FtINCTION Code

' Viv Class Cat CV 31383 Cig titr From 21 Comp Clg Ilt Exch Open to sply Clg ilte to CC llX 3

B CV 31584 Clg Utr From 22 Comp Clg ilt Exch Open to sply Clg Utr to CC llX 3

B e

CODE RE0llIREMEfTf Stroke t ime of the power operated valves will not he measured as required by IWV-3410(c).

BASIS The CV are designed to modulate to control functions. The amount of valve movement and time for valve ra h movement is a function of the difference between input signal (desired condition) and measur<.d signal e

(actual condition). The plant is not able to reproduce this difference consistently, therea ce stroke timing would be meaningless.

ALTERNATE ITISPECTION (Test ing)

At the f requency specified in It!V-3410(a) the ability of the control valve to stroke smoothly will be locally verified. The signal to stroke the valve wi.11 he the adjustment of the temperature control se t po ir.t.

SCIIEDill.E FOR I'lPLE?tENTATION Six months from the submittal date of Revision 8 U$

k 28 w