Text

Inservice Testing Program for Pumps & Valves & Pressure Test Program for 790901-810501
	ML19246A629
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	06/30/1979
From:	; CONNECTICUT YANKEE ATOMIC POWER CO.
To:	;
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ML19246A627	List: ML19246A626; ML19246A629;
References
	PROC-790630, NUDOCS 7907060171
	Download: ML19246A629 (64)
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DOCKET No. 50-213 ATTACIDIENT liADDAM NECK PLANT INSERVICE TESTING PROGRAM FOR PUMPS AND VALVES AND PRESSURE TEST PROGRAM FOR TllE PERIOD SEPTDiBER 1,1979 TO MAY 1, 1981 JUNE, 1979

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p.s OPERATIONAL READINESS TESTING FOR PUf1PS There are fourteen (14) pumps at Connecticut Yankee which aualify for operational readiness testing under Subsection IWP of Section XT.

All of these pumps are either under continuous service or periodica'lly surveillcnce-tested under the plant Technical Specifications.

The attached tabulation of pumps identifies the pumps to be tested, pump code classes, parameters to be measured and test intervals.

The provisions of Subsection IWP will be adhered to insofar as installed instrumentation allows at a test frequency compatible with safe operating criteria.

The charging pumps and service water pumps operate in variable resistance sy s tem s.

For the charging pumps, inlet pressures are influenced by volune control tank level changes and variations in tank qas blanketing pressure.

The pump discharge precsures are effected by pressurizer level, leak rate of reactor coolant pump seals and letdown flow.

Because of these five variables, reference values for hydraulic data cannot be accurately established, as required by IWP-3110.

For the service water pumps, inlet pressures are influenced by river water height, and discharge pressures are effected by the number of service water pumps operating, water temperature and heat load in the plant systems cooled by service water.

Because of these variables, reference values for hydraulic data cannot be accurately established, as required by IWP-3110. As an alternate to defining acceptance criteria based on Table IWP-3100-2, CYAPC0 proposes to establish reference hydraulic performance curves of pump dynamic head versus flow.

The reference performance curves will encompass the range of pump operating conditions experienced in the surveillance testirg.

Specific operating tolerances will be assigned to the reference performance curves to provide for the necessary corrective action.

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} ' ', Revision June 1979

a CONNECTICUT YANKFE 110tKVICE PUMP TEST PROGRAF 1 ASME SECTION XI - SUBSECTION IWP "S75" ADDENDA ASME CODE TEST SECTION X? CODE PUMP IDENTIFICATION PUMP DESCRIPTION CLASS MEASURED PARAMETERS INTERVAL RELIEF REQUESTED P-18-lA Charging 2

Measurements Taken Per P-18-1B IWP-3400b

1. Speal (if variable)

N/A

2. Inlet Pressure (Pi)

?bnthly Yes - tbte #1

3. Outlet Pressure (Po)

?tnthly

b

4. Differential Pressure (Pi-Po)

Moathly Ib

5. F17a Pate

!tnthl}

!b

6. Vibration kaplittric Monthly

!b

7. Bearing Tunperature Yearly

!b

8. Observe Inbricant Level or Pressure Monthly Ib P-14-1A Residual ifeat Rmoval 2

1. Speed (if vari able)

N/A P-14-1B (RIIR)

2. Inlet Pressure (Pi)

!bnthly Yes - Note #4

3. Outlet Pressure (Po)

?tnthly Ib

4. Differential Pressure (Pi-Ib)

?bnthly

!b

5. Flow Pate Shutdown Yes - Ibte #5

6. Vibration 'mplitude tionthly No

7. Bearing Tmp'rature Yearly tb

8. Observe Inbricant Iovel or Pressure

!tnthly b

o s--

Revision June 1979

4 s

a CofitJECTICUT YANKEE INSERVICE PUl1P TEST PROGRAM ASME SECTION XI - SUBSECTION IWP "S75" ADDENDA ASt1E CODE TEST SECTION XI CODE PUMP IDENTIFICATION PUMP DESCRIPTION CLASS MEASURED PARAMETERS INTERVAL RELIEF REQUESTED P-15-1A High Pressure Safety 2

P-15-1B Injection (HPSI)

1. Speed (if variable)

!J/A

2. Inlet I. essure (Pi) tbnthly Yes - Ibte #4

3. Outlet Pressure (Po)

Monthly

?b

4. Differential Pressw e (Pi-Po)

Monthly tb

5. Flow P. ate L:s-Note f 3

6. Vibration Amplitude Ibnthly

!b

7. Bearing Tanperature Yearly Yes-Note #7

8. Observe Lubricant IcVel or Pressure Monthly

!b P-37-1A Service Water (SW) 3 Measuranents taken p2r P-37-1B IWP-3400b P-37-lc

1. Spnt (if variable)

N/A P-37-lD

2. Inlet Pressure (Pi) tbnthly Yes - tbte #2

3. Outlet Pressure (Po)

Monthly ib

4. Differential Pressure (Pi-Po)

?bnthly

!b

5. Flow Pate Ibnthly tb

6. Vibration Icplitude Monthly rio

7. Bearing Tunperature Yearly Yes - Note =8 l

8. Observe Inbricant IcVel or Pressure bbnthly No a

g Revision June 1979

CotJNECTICUT YANKEE IfJSiRVICE PUMP TEST PROGRAM ASME SECTION XI - SUERECTIOrl IWP "S75" ADDEfJDA

/.Sf1E C O Dt' TEST SECTION XI CODE PUMP IDENTIFICATION PUMP DESCRIPTION CLASS MEASURED PARAMETFRS INTERVAL RELIEF REQUESTED P-32-1A Auxiliary Steam Genera-1 P-32-1B tor Feedwater (Steam

1. Speal (if variable)

Monthly Ib Driven)

2. Inlet Pressure (Pi)

Ilonthly ib

3. Outlet P. essure (Po)

Monthly

!b

4. Differential Pressure (Pi-Po)

Monthly

!b

5. Flo'J Pate Pefueling Yes - Ibte #6

6. Vibration Teplittyle T1onthly tb

7. Bearing Temperature Yearly

!b

8. Observe Lulricant Invel or Pressure

!bnthly

!b P-92-A Iow Pressure Safety 2

P-92-B Injection (LPSI)

1. Speal (if variable)

N/A

2. Inlet Pressure (Pi)

Tbnthly Yes - Ibte #4

3. Outlet Pressure (Po)

Monthly

!b

4. Differential Pressure (Pi-Po)

?bnthly Ib

5. Flow Rate Yes - Note =3

6. Vibration Tcplitude fbnthly Ib

7. Bearing Terperature Yearly Ves-Note 67

6. Observe Lubricant IcVel or Pressure Monthly

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Revision June 1979 NOTES ON INSERVICE PUMP TEST PROGRAF 1

1 Pressure measurement on the pump inlet is not available.

We propose to use the static head pressure of the volume control tank as the inlet pressure to the pump.

Corr ect perfon1ance of these purps can only be assessed on their continued ability to perforn the function for which they were installed.

2 The service water pumps are vertical design with no neans of direct inlet pressure neasurement as required by IWP-4200.

Inlet pressure to these pumps will be established by reference to the level of the river water to that of the pump suction.

Due to the <ienands of dependent systems, the individual te: ting of service water pumps as required by IWP-3400 (a) would jeoparoize safe plant operation.

3 The HPSI and LPSI pumps as designed and installed do not have instru-mentation for the recording of flow rates as required by IWP-3100.

During the test runs, the pumps are operated in a fixed resistance systems, so recording the punp differential pressure is sufficient per Table IWP-3100-1.

The monthly tests are run through recirculation lines which allow for flow rates of about 60 design for the HPSI pumps and 101 design for the LPSI pumps.

See Tech Specs. 4.3. Full flow testing of these systems is scheduled for the 1980 refueling ou ta g e, d4 Instrumentation is not installed which will permit the recording of the inlet pressure.

We propose to use the static head pressure of the refueling water storage tank as the inlet pressure for the LPSI, HPSI and RHR pumps.

5 The RHR pump is rur. on recirculation monthly per Tech Spec., 4.3, and in this mode, flow is restricted by a 3/4" recirculation line and is therefore meaningless.

Flow rate measurements will be nade during cold shutdowns when the Residual Heat Renoval System is in normal operation.

6 The Auxiliary Steam Generator Feedwater Pump (Stean Driven) hydraulic test circuit does not contain flow instrumentation.

Flow rate is detennined during refueling outages when a special test set up allows level changes in the Demineralized Water Storage Tank to be recorded and timed to establish this measurement.

7 CYAPCO requests a waiver from IUP-4310 " Temperature Measurement -

Sc cirgs" as there is no design provision to directly measure bearing tenperatures in the HPSI and LPSI pumps, and results obtained thus far using pyrameters are of questionable value.

Additionally, these pumps are required to run for no longer than 30 minutes in the emer-gency mode, so bearing temperatures would nct be expected to stabilize under these conditions.

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c. Revision June 1979

8 The four service water pumps are motor driven vertical turbine -

type pumps and are located in the plant intake structure.

(See cketch, below).

The pumps extend down 42 feet from the operating floor and contain five bearings (primarily shaf t steadying bearings).

It is not possible to measure temperatures of the four lower bearings due to lack of access caused by the intake structure configuration, and pump casing design.

CYAPC0 therefore requests a waiver from IWP-4310 for these four bearings in each pump, and as an alternate, will measure the temperature of the upper bearing enly.

As a point of information, only one pump is required to provide flow in the event of a safety system function.

In addition, twelve years of satisfactory operation have demonstrated the reliability of these

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SYSTEf1 PRESSURE TESTS Articles IWA-5000, IWB-5000, tWC-5000 and IWD-5000 discuss the require-ments of system pressure tests for Classes 1, 2 and 3 conponents.

Tuble BCD-5000 presents the system pressure test requirements for the Connecticut Yankee components and notes departures fron Code where it was deemed necessary.

Test requirements for open-ended lines such as suction lines from storage tanks, and which receive static tests, are not addressed in the table.

The location of check valves in several systems that penetrate the primary containment preclude the Class 1 pressure test boundary from extending outward beyond the first of such valves, usually located inside contain-nent even though the Class change boundary is outside containment.

In these cases, the Class I leakage and pressure test boundary would be the inside check valve. Conversely, pressure tests of Class 2 systems, which are outside containment, would have to be bounded at a stop valve which may or may not be the Class 1/ Class 2 boundary.

Precautions must be taken in view of the differences that exist in Class 1/ Class 2 test pressures to prevent overpressurization of the Class 1 c omponents.

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TABLE BCD-5000 SYSTEM PRESSURE TESTS TEST CODE TEST SYS.fii PRESSURE PRESSL'RE RIFRES (psig)

(psig)

CLTGS 1 (1.1 x Po)

Pcactor Coolant Pressure Bounchry System Irakage Test 2000 2000 In ecmpliance w/Ccde System Hydrostatic Test 2160 0 200F 2160 0 200F In Ccrnpliance w/ Code (see Fig. 3.4-1 of Tech Specs)

CIASS 2 (1.25 x Pd-except for IWC-5220 (c) )

thin Steam 1231 tbte #1 Feedwater 1512 tbte el RHR 145 145

!bte e2 HPSI 14(,0 1400 In compliance w/ Code (Note e2)

LPSI 295 295 In compliance w/ Code (t;ote e2)

CVCS: Charging Picp Discharge 2400 3419 Note e3 Seal Injection 2400 3419 Note e3 Irtdown 100 625 tbte #3 CIASS 3 (1.1 x Pd)

Spent Fuel Pit Cooling 165 165 In compliance w/ Code Component Cooling 85 165

!bte v4 Service Water 121 121 In corpljance w/ Code Doric Acid 165 165 In complianen w/ Code Auxiliary Feedwater 1375 1375 In corpliance w/ Code

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NOTES FOR PRESSURE TESTS NOTE #1 In that the steam generators are within the pressure boundary of the main steam and feedwater syrtems and reactor coolant system, special precautions must be taken so as not to exceed the design maximum of 840 psid pressure differential across the tube sheet.

During the test, it will be necessary to adjust the reactor coolant system (primary side) pressure to a point compatible with the nil ductility transition temperature while keeping the test media temperature on the steam /feedwater (secondary side) below a condition where steaming would occur.

These conditions will be defined at the time of the pressure test, when vessel exposure and NDTT can be more closely defined.

NOTE #2 For components that are not required to function during normal operations, such as RHR, HPSI and LPSI, the system test pressure, as stated in IWC-5 2 2 0 (c ), shall not be less than 1001 of the pressure developed during the conduct of a pariodic system inservice operability test.

These test pressures for the RHR, HPSI and LPSI system are as stated in Section 4.3 of the Connecticut Yankee Tech Specs and are noted as test pressures in the attached tables.

NOTE H3 The chemical and volume control charging, seal injection and letdown systems are in operation during normal plant operation and are continuously monitored to ensure integrity and performance.

In additian, the potential for inadvertent overpressurization of the reactor coolant system causes additional concerns on the advisability of pressurizing Class 2 system to considerably higher pressure than tne adjacent Class 1 system.

In lieu of the Code requirements and for the reasons stated above, a visual examination at operating pressur' will be conducted.

NOTE #4 The component cooling system is needed to cool the RHR heat exchangers.

Therefore, since the RHR system must be operable during operation as well as shutdown, the component cooling hydrostatic test can only be performed when all fuel is removed from the core.

In lieu of a hydrostatic test a visual examination will be conducted on this system at normal operating pressure.

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3

JTK-c32 OPERATIONAL READINESS TESTING FOR VALVES The attached table includes all valves in the Haddam Neck Plant which are required to be identified under Subsection IWV of ASME Section XI, Sumner 1975 Addenda as further defined in NRC staff guidelines and in meetings 91tn NRC staff reviewers, CYAPCO and NUSCO cersonnel, Most of the valves are presently under surveillance testing requirements of plant Technical Specifications or administratively controlled by plant regulations or requirements.

In some cases, the specific requirements of IWV cannot be met due to plant design, operational requirements or infringenent on safety margins. These situations are noted as required and pertinent waiver requests and alternate test schemes are presented.

Valves which cannot be tested while the reactor is at power can, for the nost nart, be tested during cold shutdowns.

CYAPC0 has established a progran to commence testi,1q these valves within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months of achieving cold shutdown conditions, and to continue as time pernits on subsequent shutdowns without repeating valve tests until the entire list has been completed.

Valve testing has been underway since bauary, 1978 and although good repeatability has been observed on operator stroke times, CYAPC0 requests a waiver from the requirements of IWV-3410(c)(3) to enable engineering dispositions to be made on stroke time var iations without necessarily committing to monthly valve tests.

The stroke times have been derived basically from plant design information and reviewed by plant operations personnel to verify acceptability with time restraints dictated by normal and energency conditions.

In addition, CYAPC0 requests a waiver from IWV-3410(q) in that the operating status of a valve would best be determined by plant management after an engineering and operations review of test data.

Leak testing of pressure isolation valves will be conducted to the requirements of IWV-3420.

In some instances, it is planned to add test connections to f3cilitate these tests, when the necessary design and material procurement has been completed.

In the interin, CYAPC0 will develop leak testing procedures to provide qualitative assurance of pressure integrity for these valves.

Relief valve setpoints will be tested in accordance with ASME PTC25.3 -

1976 in lieu of PTC25.2 - 1966 as the earlier version has been revised and superseded.as referenced in the Sum IWV-3520(c) check valves tests - corrective action - requires that a valve be declared inoperative if certain test provisions cannot be verified.

action in the specific valve test procedures.CYAPC0 intends to imolement t Unsatisfactory test results may or may not lead to an " inoperative" status, depending upon an engineering evalautien and disposition of test data by plant management.

In that the Haddan Neck Plant has been in service for over ten years, the preoperational test data required by IWV-6220 is not available in all cases.

Component record packages will and manufacturer's test reports.

.ontain available preoperational

O f.

June 1979

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6 SYSTEM:

SAFETY INJECTION 1.

Valve:

SI-CV-103.107A,107B Class / Category:

2-C Function:

Prevent backflow from RHR system to LPSI pumps Test Requirement:

Exercise valves to full open position every tnree months.

Basis for Relief; Full or partial valve exercising requires that flow be established into the reactor vessel.

Systen pressure downstream of these valves does not allow flow during normal operations.

. -ing cold shutdown, available volume in the reactor vessel is insufficient to acconnodate flow required for exercising these valves.

In addition, the high flow generated by the LPSI pumps would stir up crud in the SI piping and deteriorate the chemistry of the RCS water.

Alternate Testing:

CYAPCO will use gravity flow from the RWST through these lines to partially stioke the valves at reactor refueling when the RHR systen can be taken out of service.

This was done at the 1979 outage.

A full flow test is oroposed during the 1980 outage while the reactor core is removed.

If this test is satisfactory, it will be done once per interval.

2.

Valve:

SI-CV-856A/B Class / Category:

2-C Functior.:

Prevent backflow through idle pump when one pump is running (pump discharge check valve).

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

In order to full-stroke test these valves, flow must be established into the RCS, because the pump recirc. and test line is 3/4", insufficient to simulate design conditions.

Full flow testing of the HPSI system may only be conducted with the reactor vessel head removed.

Because of the water chemistry and radiation exposure problems associated with pumping large amounts of water in through this system, CYAPC0 proposes to test these valves as discussed below.

Alternate Testing: These valves will be part-strokt tested quarterly, and full-stroke tested once each interval in con-junction with full flow tests of the HPSI system.

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SYSTEM:

SAFEThINJECTION(cont'd) 3.

Valve:

SI-CV-862A/B/C/D Class / Category:

1-AC Function:

Prevent backflow from the RCS to the HPSI system.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

A full-flow test of these valves would require that HPSI flow be established into the RCS.

A test of this nature would require that the RPV head be re-moved, and would result in water chemistry problems and high radiation exposure to plant personnel caused by dislodging crud in the safety injection system p!oina.

Alternate Testing: CYAPC0 proposed to part-stroke test these valves at reactor refueling outages and full-stroke test then every interval in conjunction with full flow tests of the safety injection system.

4.

Valve:

CD-CV-872A/B Class / Category:

1-AC Function:

Prevent backflow from RCS to Core Deluge subsystem.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

Exercising these valves requires that the RCS be depcessurized and vented, allow flow from the lower pressure RHR/LPSI systems to be established.

The tests cannot be conducted at cold shutdowns because of the water chemistry and venting require-ments discussed above.

Alternate Testing:

These valves will be part-stroke tested using gravity flow at reactor refuelings and full-stroke tested during the safety injection system tests scheduled once each interval.

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16103-26045, Sh. 5, 6 Rll-V-808 A 2-B Containment Sump Suction Isol.

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8 GA 11 LO ET Ril-V-785 B 2-E "B" RilR Pump Suction Isol.

8 GA 11 LO ET Rll-V-789 A 2-E "A"

RllR Pump Discharge Isol.

8 GA 11 LO ET Ril-V-789B 2-E "B"

RilR Pump Discharge Isol.

8 GA 11 LO ET Rll-V-791 A 2-E "A"

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RESIDUAL HEAT REMOVAL SYSTEM l.

Valve:

RH-MOV-23 and RH-MOV-34 Class / Category:

2-B Function:

Isolates containment spray system from RHR system.

Test Requirement:

Exercise valves for operability every three months.

Basis for Relief:

The containment spray system is set up such that opening either RH-MOV-23 or 34 will initate flow.

By entering the containment and closing manual valve RHR-V-23A, the valves could be "no flow" stroked but Tech Specs. 3.11 prevent this, as it would be disabling the containment spray system.

Alternate Testing:

These valves will be exercised during cold shutdowns.

2.

Valve:

RH-MOV-33A/B Clacs/ Category:

2-B Function:

Isolates cross-connect between RHR system and charging system.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

RH-MOV-33A and RH-MOV-33B provide a flow pa th from the RHR system to the charging pump suction header.

Stroking these valves varies the suction header pressure in the charging system and could cause charging pump flow oscillations.

Alternate Testing: These valves will be exercised at cold shutdowns.

G i

s SYSTEM:

RESIDUAL HEAT REMOVAL SYSTEM (cont'd) 3.

Valve:

RH-MOV-780 and RH-MOV-781 Class / Category:

1-A Function:

Isolates RHR supply piping from the RCS.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

These valves are interlocked with the Reactor Coolant System such that operation is not possible unless the RCS pressure is less than 375 psig.

Alternate Testing: These valves will be exercised during cold shutdowns.

4.

'alve:

RH-MOV-803 and RH-M07-804 Class / Category:

1-A Function:

Isolates RHR return piping from the RCS.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

These valves are interlocked with the Reactor Coolant Systen such that operation is not possible unless the RCS pressure is less than 375 psig.

Alternate Testing: These valves will be exercised at cold shutdowns.

5.

Valve:

RH-CV-783 and RH-CV-808A Class / Category:

2-C Function:

Prevent reverse flow in containment sump suction p; ping to RHR system Basis for Relief:

These valves are locacea in piping which is normally drained and do not function unless water is present in the containment sump, as would be the case during a LOCA.

It is not practicable to flood the containment floor and sump to hydraulically exercise these valves.

Alternate Testing:

Each of these valves will be disassembled and inspected to determine interior condition and operability once each interval.

RH-CV-783 was disassembled and inspected i, February, 1979 and found to be in satisfactory coi dition.

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GA II LO ET BA-V-352 3-E "A" BA Pump Suction Isol.

2 GA H

LO ET BA-V-359 3-E "B" BA Pump Suction Isol.

2 GA 11 LO ET BA-V-362 3-E "B" BA Pump Disch. Isol.

1.5 GL 11 Lo ET BA-V-364 3-E "A" BA Pump Disch. Isol, 1.5 GL 11 LO ET BA-V-360 3-E BA Filter Inlet Isol.

2 GL H

LO ET BA-V-371 3-E BA Filter Outlet Isol.

2 GL 11 LO ET Cll-V-261 2-E "A" Ch. Pump Suction Isol.

6 GA 11 LO ET Clf-V-270 2-E "B"

Ch. Pump Suction Isol.

6 GA 11 LO ET Cil-V-264 2-E "A" Ch. Pump Disch. Isol.

3 GA 11 LO ET Cll-V-273 2-E "B" Ch. Pump Disch. Isol.

3 GA 11 LO ET J

b Ay SYSTEM:

CHEMICAL AND VOLUME CONTROL 1.

Valve:

BA-MOV-32 Class / Category:

2-B Function:

Isolates the Refueling Water Storage Tank from the charging pump suction header.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

Cycling this valve could potentially cause a highly borated solution to reach the RCS, via the charging system, which is in continuous service.

Alternate Testing:

Exercise valve for operability at cold shutdown.

2.

Valve:

LD-MOV-200 Class / Category:

1-B Function:

Isolates letdown flow from the RCS.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

Closing this normally open valve to check operability would disrupt letdown flow.

This would cause flow /

pressure transients in the charging and letdown systems.

Alternate Testing:

Exercise valve for operability at cold shutdowns.

3.

Valve:

CH-MOV-257 Class / Category:

2-B Function:

Isolates Volume Control Tank from charging pump suction header.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

Closing this normally open valve would cause the charging pumps to cavitate.

Part-stroke testing is not possible.

(No jog control on valve operator).

Alternate Testing:

Exercise valve (full-stroke) during cola shutdowns.

an-

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a SYSTEM:

CHEMICAL AND VOLUME CONTROL (cont'd) 4.

Valve:

CH-FCV-110,110A Class / Category:

2-3 Function:

Controls charging flow to RCS.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

These valves are arranged in parallel flow paths such that either valve can be utilized to control charging flow to the RCS.

The valves are normally open and modulate to control flow.

They remain open in the accicent node but assume a pre-set SIS position.

Exercising these valves full-stroke durino normal ope.ations would cause flow and pressure transients in the charging systen.

Cold shutdown testing is not possible as stroking these valves to the accident asition requires an integrated SIS test, perforned only at refueling outages when the plant is lined up to conduct such testing.

Alternate Testing: These valves will be full-stroke exercised at reactor refuelinas during scheduled safety injectior, system testino.

5.

Valve:

BA-CV-320 Clais/ Category:

2-C Func tion:

Prevents reverse flow in the boric acid solution supply line to the charging pump suction header.

Tes. Requirement:

Exercise valve for operability every three months.

Bas is for Relief:

Exercising this valve to the open position must be done by passing flow through it, and this could potentially cause a concentrated boric acid solution to reach the reactor, via the charging system.

Alterncte Testing:

Exercise valve for operability at cold shutdowr..

6.

Valve:

BA-MOV-366 Class / Category:

2-B Function:

Isolates Borie Acid subsystem from charging pump suction header.

Test Requirement:

Exercise valve for operability every three months.

on

s SYSTEM:

CHEMICAL AND VOLUME CONTROL (cont'd)

Basis for Relief:

Operation of this valve while the plant is at power could potentially cause a concentrated boric acid solution to reach the reactor, via the charging system.

Alternate Testing: This valve will be exercised at cold shutdowns.

7.

Valve:

BA-CV-372A Class / Category:

2-C Function:

Prevents reverse flow into the RWST transfer line to the charging pump suction header.

Test Requirement:

Exercise valve for operability every three nonths.

Basis for Relief:

Operation of this valve while the plant is at por?r could cause horic acid solution to reach the.eactor via tie charging system.

Alternate Testing: This lve will be exercised at cold shutdowns.

8.

Valve:

BA-MOV-373 Class / Category:

2-B Function:

RWST to charging pump suction header isolation val ve.'

Test Requirement:

Exercise valve for operability every three nonths.

Basis for Relief:

Operation of this valve while the plant is at power could potentially cause boric acid solution to reach the reactor.

Alternate Teting:

This valve will be exercised at cold shutdowns.

9.

Valve:

BA-CV-387 Class / Category:

3-C Function:

Prevents backflow from charging pump suction header to Boric Acid subsystem.

Test Requirement:

Exercise valve for operability every three months.

Basis for Relief:

Exercising this valve to the open position must be done by passing flow through it, and this could potentially cause a concentrated boric acid solu-tion to reach the reactor, via the charging system.

Alternate Testing: This valve will be exercised at cold shutdowns.

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x flain Steam System (Cont'd) 16103-26045, Sh. 1 MS-SV-33 2-C SG No. 3 flain Steam Safety 6
REL SRV
?!S-SV-34 2-C SG No. 3 Plain Str am Sa fety 6
REL SRV MS-SV-41 2-C SG No. 4 Main Steam Safety 6
REL SRV MS-SV-42 2-C SG No. 4 Main Steam Sa fety 6
REL SPV MS-SV-43 2-C SG No. 4 Main Steam Safety 6
REL SRV MS-SV-4 2-C SG No.
Main Steam Safety 6
REL SRV t!S-PICV-1206A 3-B Steam Supply to Aux. FP "A" 2
CON A
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MT 90 sec. to or FT MS-PICV-1206B 3-B Steam Supply to Aux. FP "B"
2 CON A
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16103-26045, Sh. I MS-TV-1211-4 2-Br Main Steam Supply to Turbine 24 Stop A
0 Q
X CS CK MT 10 sec. to close MS-NRV-18 2-BC SG No. 1 Atmospheric Dump 3
Stop O
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Stop 11 0
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Stop H
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Stop 11 0
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REL SRV MS-SV-1216B 3-C Aux. FP "B" Safety Va1ve 3
REL SRV D
SYSTEM:
MAIN STEAM SYSTEM 1.
Valve:
'tS-NRV-ll, 21, 31, 41 Class / Category:
2-BC Function:
.an-return stop check valves in rain steam lines from stean generators.
Test Requirement:
Exercise for operability every three months.
Basis for Relief:
Failure of valve in a nonconservative position would cause a loss of systen function.
Alternate Testing:
Full-stroke testing at cold shutdowns.
2.
Valves:
MS-TV-1211 -1,
-2,
-3, -4 Class / Category:
2-BC Function:
Main Steam Supply to Turbines Test Requirement:
Exercise valve for operability and measure stroke time every three months.
Basis fr Relief:
Failure of valve in nonconservative oosition would cause loss of system function.
Alternate Testing:
Full-stroke exercise and measure stroke time during cold shutdown.
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GA M
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MT 30 sec, to open FW-CV-143-1 2-C FW Supply to SG No. I 12 CK O
CV X
Verity open only FW-CV-143-2 2-C FW Supply to SG No. 2 12 CK 0
CV X
Verify open only FW-CV-143-3 2-C FW Supply to SG No. 3 12 CK 0
CV X
Verify open only FW-CV-143-4 2-C FW Supply to SG No. 4 12 CK 0
CV X
Verify open only FW-CV-153B 3-C "A" Aux. Feedpump Disch. Check 3
CK C
CV X
CS FW-CV-184 3-C "B" Aux. Feedpump Disch. Check 3
CK C
CV X
CS FW-CV-156-1 2-C Aux. FW Supply to SG No. I 1.5 CK C
CV X
CS Verify open only FW-CV-156-2 2-C Aux. FW Supply to SG No. 2 1.5 CK C
CV X
CS Verify open only FW-CV-156-3 2-C Aux. FW Supply to SG No. 3 1.5 CK C
CV X
CS Verify open only FW-CV-156-4 2-C Aux. FW Supply to SG No. 4 1.5 CK C
CV X
CS Verify open only FW-FCV-1301-1 2-B SG No. 1 FW Reg. Valve 8
CON A
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, FW-FCV-1301-2 2-B SG No. 2 FW Reg. Valve 8
CON A
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CON A
0 Q
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CON A
0 Q
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C Q
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C Q
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C Q
X CS BIT 60 sec. to open FT s
1 SYSTEM:
FEEDWATER SYSTEM 1.
Valves:
FW-CV-153B,184 Class / Category:
3-C Function:
"A" and "B" auxiliary feedpumps dir;harge checks.
Test Requirement:
Exercise to open oosition every three months.
Basis for Relief:
Full or partial stroke testing of these valves requires than an auxiliary feedpump be started and flow be established to the Steam Generators.
This test is undesirable while the reactor is at power because of the steam generator thermal shock potential. The pumps take suction on the Demineralized Water Storage Tank (cold water).
Alternate Testing: These check valves will be exercised at cold shutdown.
2.
Valves:
FW-CV-156-1,
-2,
-3, -4 Class / Category:
2-C Function:
Check valves in auxiliary feedwater supply to steam generators.
Test Requirement:
Exercise to open position every three months.
Basis for Relief:
Full or partial st-oke testing of these valves requires that an auxiliary feedpump be started and flow be established to the Steam Generators.
This test is undesirable while the reactor is at power hecause of the steam generator thermal shock potential. The pumps take suction on the Deminer-alized Water Storage Tank (cold water).
3.
Valves:
. W-FCV-1301 -1.,
-2,
-3, -4 Class / Category:
2-B Function:
Main feedwater regulating valves.
Test Requirement:
Exercise for operability ar.d test fail position every three months.
Basis for Relief:
Failure of valse in nonconservative position would cause loss of system function.
Alternate Testing:
ihese valves will be cycled at cold shutdowns.
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SYSTEM:
FEEDWATER SYSTEM (cont'd) 4.
Valves:
FW-HICV-130'.
2,
-3, -4 Class /Categsry:
2-B Function:
Feedwater regulating bypass valve.
Test Requirenent:
Exercise for operability and test fail position every three months.
Basis tcr Relief:
Cycling these normally closed valves during operation causes severe water hammer problems.
Alternate Testing: These valves will be cycled at cold shutdowns.
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x Service Water System 16103-26045, Sh. 9 SW-MOV-1 3-B East flea <ler Isolation 12 GA M
0 Q
X CS MT 90 sec. to close SW-MOV-2 3-B West llea <le r Isolation 12 GA M
0 Q
X CS MT 90 sec. to close SW-MOV-3 3-B CCHX "A" Discharge 16 GA M
O/C Q
X CS MT 90 sec, to close SW-MOV-4 3-B CClfX "B" Discliarge 16 GA M
O/C Q
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C Q
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Q X
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8 CON A
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6 CON A
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MT 10 sec. to close FT 2
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SW-A0V-129 3-B "A" Diesel Cooling Return 4
CON A
C Q
MT 30 sec, to open FT SW-A0V-130 3-B "B" Diesel Cooling Return 4
CON A
C Q
MT 30 sec. to open FT SW-CV-276A 3-C "A" SW Pump Disch. Check 16 CK 0
CV SW-CV-276B 3-C "B" SW " ump Disch. Check 16 CK 0
CV SW-CV-276C 3-C "C" SW Pump Disch. Check 16 CK 0
CV SW-CV-276D 3-C "D" SW Piuap DIsch. Check 16 CK 0
CV SW-V-715 B-E
/ 2x. Feed Pump Brg. Coolers Supply
.75 GL 11 LO ET 2
SYSTEM:
SERVICE WATER SYSTEM 1.
Valves:
SW-MOV-1, 2 Class / Category:
3-B Function:
East and West service water header isolation valves.
Test Requirement:
Exercise for operability every three months.
Basis for Relief:
These valves control service water cooling to several essential plant loads.
Failure of valve in non-open position could cause overheating of these loads resulting in loss of generation.
Alternate Testing. These valves will be full-stroke tested and timed at cold shutdowns.
2.
Valves:
SW-MOV-3, 4 Class / Category:
3-B Function:
Component cooling heat exchangers cooling water discharge stops.
Test Requirements:
Exercise for operability every three months.
Basis for Relief:
These valves control service water cooling to the component cooling heat exchangers.
Failure of valve in non-open position could cause overheating resulting in loss of generation.
Alternate Testing:
These valves will be full-stroke tested and timed at cold shutdowns.
3.
Valves:
SW-MOV-5, 6 Class / Category:
3-B Function:
These valves open to supply service water to the residual heat exchangers in the event of a failure in the component cooling system.
There is no auto-matic operation.
Basis for Relief:
Stroking these valves requires that the service water system be cross-connected with the component cooling water system to provide energency flow to the Residual Heat Removal Heat Exchangers. The service water system utilizes water from the Connecticut River, and the component cooling water system is a closed rystem containing potentially
SYSTEM:
SERVICE WATER SYSTEM (cont'd) contaninated water.
Cross-connecting could result in releasing nonconforming water to the river, and require a major cleanup of system components, which would require that they be taken out of service during the restoration process. These valves were satisfactorily cycled during the February,1979 refueling outage when special arrangements could be made to minimize the cleanup. ' hey had not been stroked in the past ten years, so the tests concluded that the valves were still able to fulfill their function.
Alternate Testing: We propose to exercise these valves each five years.
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.i SYSTEM:
VARIOUS - C0tlTAINMErlT ISOLATI0tl 1.
Valves:
See List of Containment Isolation Valves Class / Category:
2-A, 2-AC, 2-AE Function:
To insure containnent integrity in event of requirements to isolate.
Test Requirement:
Exercise all active valves every three months and d2termine leak tightness not less than onco every two years.
Basis for Relief:
This list consists f valves WLose only safety function is containment isolation.
Those CI valves which are used also for systen pressure isolation are listed under the parti'.ular system in which they operate.
Operabil ty testing of these valves during nornal plant operation could cause a loss of containment integrity and/or systen function if a valve failed in a nonconservative position.
Because the safety functior of these valves is to provide containnent integrity by their leak tinht-ness, these valves are and have been leak tested under Tech. Spec. requirerents based on " App. J, Type C" tests.
See Tech Snec. 4.4.
In that C;V leakage tests are conducted in accor-dance with containment integrity tests, the individual valve leakane rate analysis required by IWV~3420(f) is not done.
Leckage rates for individux: valves are recorded and combined to arrive at an intearated leak rate, which is compared to ILRT accentan.e criteria.
CYAPC0 thereby requests a waiver from IWV-3420(f) for containment isolation valves and proposes the ILRT leakage criteria as an alternate.
CYAPCO also requests a waiver from the requirements of IWV-3420(q).
Leakage rates recorded on the 9 CIV's 6 inches and larger in diameter, over more than 10 years of plant operation have not denon-strated any ident'fiable trends.
Leakage past a valve can be affected by variables such as the number of times it was cycled since the last test.
Widely varying lea : age rates are cnaracteristics of both the large (greater than 6 inches) ar.d small va'ves.
CYAPC0 proposes to contirue to denonstrate permissible leakage rates by coupling with the requirements of local and integrated leak rate test criteria included in the Technical Specifications.
SYSTEM:
VARIOUS - CONTAINMENT ISOLATION (cont'd)
Alternate Testing: CYAPC0 nroposes to use existinq procedures for leak testing of valves used as containnent isolation.
"odifications to procedures as agreed upon by CYAPCO and NRC Staff concerning
" App. J" tests and exemptions will be reflected in this progran.
All " active" containment isolation valves are demonstrated operable during cold shutdown or reactor refueling at least once per 18 nonths by verifying that all valves actuate on contain-nent isolation test signals, in accordance with plant Technical Specifications. Since the Technical Specifications do not require stroke time testing of these valves, procedures have not yet been developed to test this parameter and no past experience of valve stroke tires is available.
CY proposes to perforn stroke time testing of containment isolation valves and evaluate the observed stroke i.imes during the 1980 refueling outage.
~
All passive valves (those not required to change position) per NRC Guidelines do not require exercising.
~~
LEGEND FOR VALVE TESTIt1G Q
Exer ise valve (full stroke) to verify satisfactory operation every three (3) nonths.
LT Valves are leak tested per Section XI Article lWi!-3420.
ILRT -
Containnent isolation Valves are leak tested in conjunction with containment integrated leak test.
f1T Stroke time measurements are taken per Section XI Article IWV-3410, for power operated valves.
CV Exercise check valves to the position required to fulfill their function every three (3) months.
SRV -
Safety and relief valves are tested oer Section XI Article IUV-3510.
ET Verify and record valve position before operations are performed and cfter operations are completed, and verify that valve is locked or sealed.
CS Exercise valve (full stroke) to verify satisfactory operation at cold shutdown.
RR Exercise valve (full stroke) to verify s tisfactory operation at reactor refueling.
PI Visually observe, every two years or less, actual valve position to confirm that remote valve position indicat'ons accurately reflect valve operation FT Remove actuator power from valves with fail-safe actuators to confirm that the valve travels to its fail-safe position every three (3) nonths, a r,,

ML19246A629

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