ML20154D524
ML20154D524 | |
Person / Time | |
---|---|
Site: | Beaver Valley |
Issue date: | 08/14/1998 |
From: | DUQUESNE LIGHT CO. |
To: | |
Shared Package | |
ML20154D523 | List: |
References | |
PROC-980814, NUDOCS 9810070250 | |
Download: ML20154D524 (31) | |
Text
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DUQUESNE LIGHT COMPANY Beaver Valley Power Station Unit 2 INSERVICE TESTING (IST) PROGRAM FOR PU,MPS AND VALVES l
Issue 2 Res tsien 06
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Boavor Vallgy Powcr Stati:n Umt 2 issue 2 i
- INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Revision dCM.
Page i i List c4 Effective Panes Page Revision Page Revision i #@ 40 0 i ii # O fa* 41
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Beaver Valley Power Station Unit 2 issue 2 i Revision 4 M INSERVICE TESTING (IST) AROGRAM FOR DUMPS AND VALVES Page o List of EWective Paaes (ConUnued) . -
Page Revision Page Revision 83 0 126 0 34 06 127 0 85 0 128 0 86 0 129 0 87 0 130 0 88 0 131 0 89 0 132 -
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-118 0 150 0 117 0 100 0 118 04 161 0 119 04 162 0 120 Q4 163 0 121 0 164 0 122 0 168 0 123 0 166 0 l 124 0 167 0 125 0 164 0
Bsaver valley Pow:r Statien Unit 2 issue 2 Revisi n g INSERVICE TESTING (IST) AROGRAM FOR DUM AS AND VALVES 8agein List of EWective Paces (Continued)
Page Revision Page Revision 169 0 212 0 170 0 213 0 171 0 214 0 172 0 215 0 173 0 216 0 174 0 217 0 175 _
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Seaver Vailey :ower Stat.cn Umt 2 .ssue 2 8 ev'sien [%
NSE8v'CE *ES-'NG UST) 3*CGRAM :CR 8LMPS AND VALVES = age y List of EWective Paaes (Continued) ' '
Page Revision Page Revision 255 C4 256 0 257 0 258 0
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Beaver Vallsy Powsr Station Unit 2 issue 2 Ptvision OGa INSERVICE TESTING OST) PROGRAM FOR PUMPS AND VALVES Page 5 of 279 performance of the parent pump or other component is demonstrated by an a7plicaole surveillance test.
Records of the results of inservice tests and corrective actions as required by Paragraph 7 of OM-6 are trended in tabular form. Pump performance characteristics will be examined for trends.
The following five sections of this document are the " Pump Outlines"," Pump Cold Shutdown Justifications", " Pump Refueling Outage Justifications", " Pump Relief Requests",
and " Pump Minimum Operating Point (MOP) Curves" sections.
The " Pump Outlines" section is a listing of all the pumps in the IST Program, their testing i requirements, and their specific pump cold shutdown justification, refueling outage I justification, and/or relief request reference numbers. The pu nps are arranged according to system and pump mark number. The following abbreviations and designations are used j- on the Pump Outlines and throughout the IST Program for pumps:
l l N - Speed -
l P - Discharge Pressure ,
AP - Differentist Pressure Q - Flowrate V - Vibration 2BVT - Unit 2 Beaver Valley Test 20ST - Unit 2 Operating Surveillance Test l
l Q - Quarterly Test Frequency CSD - Cold Shutdown Frequency R - Refueling Test Frequency '
j 2 YR - Required every 2 years, but normally done at refueling PRR - Pump Relief Request i
l PCSJ - Pump Cold Shutdown Justification
- PROJ - Pump Refueling Outage Justification l X- - Meets or exceeds OM-6 requirements NA - Not Applicable The " Pump Cold Shutdown Justifications'section contains the detailed technical description of conditions prohibiting the required testing of safety-related pumps and an
!- alternate test method to be performed during cold shutdowns. Beaver Valley Unit 2 reactor containment is maintained subatmospheric as required by technical specifications. The l
subatmospheric condition presents a hazardous working environment for station personnel and is considered inaccessible for surveillance testing. Surveillance testing that requires a reactor containment entry will be performed at cold shutdown and refueling. The pump cold shutdown justification (s) for a specific pump are referenced by the number (s) listed on the pump's outline sheets.
i Bsaver Valley Power Station Unit 2 Issua 2 Revision 0 i Page 6 of 279 l INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES The ~ Pump Refueling Outage Justifications" section contains the detailed technical description of conditions prohibiting the required testing of safety-related pumps and an alternate test method to be performed during refueling outages. The pump refueling outage justification (s) for a specific pump are referenced by the number (s) listed on the pump's outline sheets.
The " Pump Relief Requests" section contains th'e detailed technical description of particular conditions and equipment installations prohibiting the testing of some of the characteristics of safety-related pumps. An alternate test method and the frequency of revised testing is also included to meet the intent of 10CFR50.55a. The relief request (s) for a specific pump is referenced by the number (s) listed on the pump's testing outline sheet.
The " Pump Minimum Operating Point (MOP) Curves
- section contains a graphical representation of the minimum allowable pump flow versus head, which is required to meet the applicable safety analysis, for each centrifugal pump in the Unit 2 IST Program.
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i Ssavor Vailsy Powsr Station Unit 2 issue 2 l j
Revision Odr INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Dage 21 of 279 SVPS 2 IST I
, PUMP OUT1.!NE Pump l Pump Code System: 13-Containment Depressurizstion
, Name: 21 A Recirculation Class: 2 l Number: 2RSS* P21 A i Soray Pump I
' Function: Circulate containment sump water for long term Type: Vertical l Dwg. OM No.: 13 1
_", "d[***"" * * " l Dwg. Coord.: F-3 3 ' Remarks: Pump i ested'during refueling outages at full flow through a test loop per PROJ1. Also see PRR1 r and PR .
Parameter 2087 Reg'd Comments (Frequency)
N NA NA Constant speed induction motor.
AP 2BVT 1.13.5 X Calculated usmg Pump Discharge Pressure indicator
$ltr (PRR2) (2RSS-Pl156A], Control Room, and local temporary suction (3, preesure test gauge. See PRR2 fu rg and accuracy of temporary suction pressure teet gauge.
Q 2BVT 1.13.5 X Flow Indicato [2RSS-F1157A), Contrcv oom.
Y s V X Portable momtorme opsing v hty units.
4w 1.13.5 lh 2BVT _
Unit 2 Issue 2 Beavar Vailsy Power Station Revision Cda Page 22 of 279
!NSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES 8
PUMP OUTUNE f System: 13-Containment Depressurization j
- Pump jPump l Code i Number
- 2RSS* P218 Class: 2 j Name: 21B Recirculation i l
Spray Pump i ,
j Type: Vertical Dwg. OM No.: 13-1 Function: Circulate contairment sump water for long term containment d ssurization. Dwg. Coord.: E-8
' Remarks: Pump ike'6(ed dunng refueling outages at full flow through a test loop per PROJ1. Also see MR1 l l
and PRR2.
)
Reg'd . Comments Parameter 20$7 (Frequency)
NA NA Constant speed induction motor.
N X Calculated using Pump Discharge Pressure Indicator AP 2BVT 1.13.5 M (PRR2) [2R$514156B] Control Room, and local temporary suc ion (1Vg) pressure test gauge. See PRR2 for range and accuracy of temporary suction pressure test gauge.
Q 2BVT 1.13.5 X Flow Indicator [2RSS-Fl157B]. Contret Room. '
&k X s
Portable monitoring equspment using velocity units.
V 2BVT 1.13.5 GdY l
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Seavsr Valley Powsr Station Unit 2 issuo 2 Rcvision Ode INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 23 of 279 i BVPS.2 IST l
! PUMP OUTLINE
. Pump ' Pump ' Code System: 13-Containment Depressurization l
! Name: 21C Recirculation Number: 2RS$*P21C Class: 2 !
,l Soray Pumo l
' Function: Circulate containment sump water for long term Type: Vertical ' Owg OM No.: 13 1 j containment depressurization and long term core Dwg. Coord.: E.5 I recircu,lation J >
! Remarks: Pump hs'teId du# ring refueling outages at full flow through a test loop per PROJ1. Also see PRR1 !
l and PRR2. l Parameter 2OST. Req'd Comments !
(Frequency) '
N NA NA Constant speed induction motor.
AP 2BVT 1.13.5 X Calculated using Pump Discharge Pressure Indicator W (PRR2) [2RSS-P1156C], Control Room, and local temporary suction (2, if pressure test gauge. See PRR2 for range and accuracy of temporary suction pressure test gauge.
Q 2BVT 1.13.5 X Flow Indicator [2RSS-F1157C], Control Room.
Ms.e4 V 2BVT 5 X Portable monitoring equipment using velocity units.
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, Osavsr Valley Power Station Unit 2 issue 2 RevrSion 08w=
INSERVICE TESTING (IST) DROGRAM FOR PUMPS AND VALVES Page 24 of 273 a . -
BVPS.2 IST PUMP OUTUNE Pump l Pump code System: 13. Containment Depressurization Name: 210 Recirculation . Number: 2RSS*P210 Class: 2
, Spray Pump !
' Function: Circulare containment sump water for long term Type: Vertical l Dwg. OM No.: 131 l containment depressurization and long term core D% Ch 'E4 i rectreulation._ _ , g l Remarks: Pump isfested duEng refueling outages at full flow through a test loop per PROJ1. Also see PRR1 l and PRR2. l Parameter 2057 Req'd Comments (Frequency) l N NA NA Constant speed induction motor. l OL AP 2BVT 1.13.5 X Calculated using Pump Discharge Pressure Indicator tet. (PRR2) [2RSS.P1156D], Control Room, and local temporary suction h pressure test gauge. See PRR2 for range and accuracy of temporary succon pressure test gauge.
Q 2BVT 5 X Flow Indicator (2RSS.F11570). Contp Room.
V 2BVT 1.13.5 X Portable morutoring equipment using velocity units.
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j Baavor Vattsy Power Station Unit 2 issua 2 '
Revision 0 .
I INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 63 of 279 l
l Pump'Name:' 21B Low Head Safety injection Pump Pump Number: 2SlS*P218
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l Page 64 of 279 i INSERVICE TESTING UST) PROGRAM FOR PUMPS AND VALVES i Pump Number: 20SS P21 A !
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} INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 65 of 279 Pump Name:'218 Quench Spray Pump Pump Number: 20SS*P218 i -ooron v
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Rcvision 0 Page 83 of 279 INSERVICE TESTING (IST) PROGRAM FOR PUMPS ANO VALVES SECTION Vil: VALVE TESTING REQUIREMENTS 1
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Unit 2 issue 2
_. Beaver Valley Power Station Revision Cdn c age 84 of 279 INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES
-The Inservice Test (IST) Program for valves at Beaver Valley Power Station (BVPS). Unit 2.
cased on the following:
. American Society of Mechanical Engineers (ASME) / American National Standards Institute ( ANSI) Ocerational and Maintenance (OM) Standard. Part 10. ~1nservice Testing of Valves in Light Water Reactor Power Plants" (OM-10). OMa 1988 addenda to the OM 1987 Edition, in accordance with the ASME Soiler and Pressure Vessel Code,Section XI.1989 edition (the Code).
- Generic Letter No. 89-04, " Guidance on Developing Acceptable Inservice Testing Programs *
- NUREG-1482. " Guidelines for Inservice Testing at Nuclear Power Plants" The valves included in this program are all ASME Class 1,2 or 3 required to perform a specific function in shutting down a reactor to the cold shutdown condition, in maintaining the cold shutdown condition, or in mitigating the consequences of an accident. The p pressure-relief devices covered are those for protecting systems or portions of systems which perform a require function in shutting down a reactor to the cold shutdown '
condition, in maintainin d shutdown condition, or in mitigating tit! consequences of an accident, at SVPS, Unit k The requirements of the Code and Generic Letter No. 89-04 including Supple .ent 1 (NUREG-1482) will be followed at all times unless specific relief has been gra A. Category A valves are valves for which seat leakage in the closed position is limit specific maximum amount for fulfillment of their function. Category B valves are v for which seat feakage in the closed position is inconsequential for fulfillment of their function. Active Category A and B valves shall be full-stroke exercised nominally every three months to the position required to fulfill their function unless such operation is n practicable during plant operation. If only limited operation is practicable during pla operation, the valves may be part-stroke exercised during plant operation and fu exercised during cold shutdowns. If exercising is not practicable during plant operati the valves may be limited to full-stroke exercising during cold shutdowns. If exercisin is not practicable during plant operation and full-stroke during cold shutdowns is a practicable, the valves may be limited to part-stroke exercising during cold shutdo and full-stroke exercising during refueling outages, if exercising is not practicable during plant operation or cold shutdowns, it may be limited to full-rtroke exercising I
during refueling outages. Exception is taken to part-stroke exercising motor-oper valves, unless specifically stated. This is necessary because the motor-operated valve circuitry prevents throttling of these valves. Under normal operation, the valves must travel to either the full open or shut position prior to reversing direction. In the case frequent cold shutdowns, these valves need not be exercised more often than once every three months. All valve exercising required to be performed during a refuelin outage shall be completed prior to returning the plant to operation. For a valve in a system declared inoperable or not required to be operable, the exercising test need not be followed. Within 3 months prior to placing the system in an operable status, the valves shall be exercised and the schedule resumed.
Seaver Vailey Power Station Unit 2 15suo 2 Revision #dlib
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'NSERVICE ~EST:NG I'STI DRCGRAM FOR PUMPS AND VALVES g page 1*1 of 279 4
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. . l Beavsr Vallsy Powsr Station Unit 2 issue 2 Revision OlLl INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND val.VES Page 201 of 273 VALVE COLD SHUTDOWN JUSTIFICATION 32 I l
Valve Mark No(s): 2CHS*HCV142 Category: A Class: 2 l System: 7 - Chemical and Volume Control Function: This residual heat removal (RHR) system letdown flow control valve must close to provide containment isolation of penetration no. 28.
Test Requirement: Per OM-10, Paragraph 4.2.1.6, " Fail-Safe Valves." valves with fail-safe actuators shall be tested by observing the operation of the actuator upon loss of valve actuating powar in accordance with the exercising frequency specified in Paragraph 4.2.1.1," Exercising Test Frequency," which states that active Category A valves shall be tested nominally every 3 months.
Basis for CSJ: This valve is normally closed during plant operation. Its safety , 1
- / gl l position is closed for containment isolation of penetration no. 28.
Full-stroke exercising in the closed direction is performed quarterly VMM , as required by OM-10. Paragraph 4.2.1.1. Fall-safe testing requires -
a local observation of the valve actuator following d: ;n ;:;2:n f g pp ]thewelve However, this valve is located inside containment which is not accessible during plant operation. Therefore, fail-safe testing ,
in the closed direction in conjunction with the quarterly stroke test I cannot be performed during plant operation. Per OM-10, l Paragraphs 4.2.1.6 and 4.2.1.2(c), if the fail-safe exercising frequency I
,is not practicable during plant operation, it may be limited to fail-safe testing during cold shutdowns.
Alternate Test: Full-stroke exercised and timed closed quarterly per 20ST-47.3A (Containment Penetration and ASME XI Valve Test) and 20ST-47.38 (Containment Penetration and ASME XI Valve Test - Refueling).
Failed closed during cold shutdowns per 20ST-1.10 (Cold Shutdown Valve Exercise Test).
References:
OM-10, Paragraphs 4.2.1.1, 4.2.1.2(c) and 4.2.1.6.
1 1
Boaver Valloy Powor Station Unit 3 Issuo 2 Romsion Olb ;
INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 201Aof 279 l l
VALVE COLD SHUTDOWN JUSTIFICATION 33 Valvs Mark No(s): 2 SIS *HCV868A 2 SIS *HCV8688 Category: 9 Class: 2 System: 11 - Safety injection Function: These high head safety injection (HHSI) discharge to cold leg injection hand control valves must open and close to provide a throttled emergency boration flowpath when normal charging is lost.
Test Requirement: Per OM-10, Paragraph 4.2.1.1, " Exercising Test Frequency," active Category B valves shall be tested nominally every 3 months.
Basis for CSJ: These valves are normally closed. Their safety position is throttled to provide an emergency boration flowpath to the cold legs in the event that the normal charging path is lost. Full or part-stroke exercising in the open and closed directions cannot be performed during plant operation because flow is required to property close these valves. Operation of the HHSI pumps to provide the flow necessary to stroke these valves closed cannot be performed during plant operation because this will inject relatively cold water into the RCS cold legs and cause thermal shock to system piping and components which will result in an increased probability of system and component failures. OM-10, Paragraph 4.2.1.2 (c) states, "If exercising is not practicable during plant operation, it may be limited to full-stroke exercising during cold shutdowns."
Alternate Test: Full-stroke exercised and timed open and closed during refueling outages per 20ST-1.10 (Cold Shutdown Valve Exercise Test)
References:
OM-10, Paragraphs 4.2.1.1 and 4.2.1.2(e).
NUREG 1482, Section 3.1.1.1 l
l i
3 Beav:r Vality Pow:r Statian Unit 2 issuo 2 Revision 0 ,
INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 202 of 279 SECTION X: VALVE REFUELING OUTAGE JUSTIFICATIONS
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l Beaver Vallay Powar Station Unit 2 issus 2 Revision 0 INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 275 of 279 VALVE REFUELING OUTAGE JUSTIFICATION 49 Valve Mark No(s): 2fAC'22 ;
)
Category: A/C Class: 2 System: 34 - Compressed Air (Containment Instrument Air)
Function: This containment instrument air header inside containment isolation check valve must close to provide containment isolation of penetration no. 59.
Test Requirement: Per OM-10. Paragraph 4.3.2.1, " Exercising Test Frequency," check valves shall be exercised nominally every 3 months.
Basis for ROJ: This check valve is ncrmally open and will remain open during operation of the containment instrument air system. Its safety ;
position is closed for containment isolation of penetration no. 59.
. Full or part-stroke exercising in the cloyd direction can only be '
verified by cycling the mechanical weignt loaded swing arm of the check valve or by leak testing. Because this check valve is located inside containment, it is not accessible for testing during plant operation. OM-10, Paragraph 4.3.2.2(c) states, "If exercising is not ,
) practicable during plant operation, it may be limited to full-stroke i exercising during cold shutdowns? In addition, full or part-stroke exercising in the closed direction may not be possible during cold shutdown if the containment instrument air system is still in service.
OM-10, Paragraph 4.3.2.2(e) states, 'If exercising is not practicable
,during plant operation or cold shutdowns, it may be limited to full-stroke exercising during refueling outages."
Alternate Test: Full-stroke exercised closed by mechanical exerciser using its weight loaded swing arm during cold shutdowns when the containment instrument air systism is shutdown, or at least during refueling outages per 2OST-1.10 (Cold Shutdown Valve Exercise Test).
References:
OM-10, Paragraphs 4.3.2.1,4.362.2(c) and 4.3.2.2(e).
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, Beaver Vallsy Pnwer Station Unit 2 i issue 2 j Revision C&
- INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 2754cf 279 l
f .
} VALVE REFOELING OUTAGE JUSTIFICATION '50
l Category: A/C Class: 1 I
- System: 11 - Safety injection i
l Function: These Safety injection (SI) Accumulator series discharge check valves must open upon depressurization of the RCS during a loss of j coolant accident (LOCA) to provide a flowpath from the Si j
Accumulators to the reactor coolant system (RCS) cold legs. I
[2 SIS *141 and 145] must also open to provide a flowpath for the residual heat removal (RHR) system when it is placed into service
- for cooldown of the plant to cold shutdown conditions.
! Test Requirement: Per OM-10, Paragraph 4.3.2.1. " Exercising Test Frequency," checir i
valves shall be exercised nominally evdry 3 months. Per OM+10,
- . Paragraph 4.3.2.4(a), " Valve Obturator Movement," the necessary
{
valve obturator movement shall be demonstrated by exercising the gg,,
valve and observing that the obturator opens to the position
- required to fulfill its function.
4 i Basis for ROJ: These check valves are normally closed as pressure isolation valves (PlV's) during plant operation to isolate the lower pressure Si Accumulators from the high pressure RCS. Their safety position is open for passive low pressure injection of the St Accumulators into j
the RCS cold legs during a LOCA. An additional safety position for i
[2 SIS *141 and 145] is open to support RHR system operation during i cooldown of the plant to cold shutdown conditions. Full or
} part-stroke exercising in the open direction cannot be performed during plant operation because the RCS is at a higher pressure than i
the SI Accumulators. During cold shutdowns,[2 SIS *141 and 145]
are capable of being part-stroke exercised in the open direction during RHR system operation. However, full stroke exercisira of all six check valves in the open direction by initiating tha mcxirrJm
- required accident condition flowrate in accordance with Generic i
Letter No. 89 04, Position 1, in addition to part-stroke exercising the remaining four check valves in the open direction, cannot be performed during cold shutdowns because of a lack of installed j; instrumentation. A proposed alternate method which measures a flow coefficient value (Cv) during a blowdown at reduced accumulator pressure (see next paragraph), also cannot be performed during cold shutdowns because of a lack of
j -
. Beaver Vaticy Powcr Station Unit 2 Issue 2 r Revision 06 I INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND val.VES Page 27'dof 279
) '
t 1 VALVE REFUELING OUTAGE JUSTIFICATION 50 i
Basis for ROJ: installed instrumentation and an uncontrolled test volume change if the St Accumulator discharge MOV isolation valves are opened at ,
I low RCS pressure. In addition, the reduced pressure which is required to perform this al, ternate test method may not always be i obtainable during each cold shutdown. Therefore, stroke testing, if ;
I attempted at cold shutdowns, could extend the length of a plant l shutdown due to the extensive preparatory work in establishing the i proper RCS and St Accumulator conditions necessary to perform ,
! the test, due to delays involved with installation and removal of test i equipment inside containment, and for delays while the Si
- i. Accumulators are re-filled and pressurized. For [2 SIS *141 and 145],
3 OM-10, Paragraph 4.3.2.2(d) states,"If exercising is not practicable ,
' during plant operation and full-stroke during cold shutdowns is also not practicable, it may be I;mited to part-stroke during cold shutdown, and full-stroke during refueling outages." For the remaining check valves, OM-10, Paragraph 4.3.2.2(e) states, "If exercising is not practicable during plapt operation or during cold shutdowns, it may be limited to full-stroke do.-Ing refueling outages."
These SI Accumulator series discharge check valves will be full-6 stroke exercised in the open direchon during each refueling outage using a method similar to the test used at the Fort Calhoun Nuclear Station (
Reference:
NUREG-1482, Section 4.1.2, " Exercising Check Valves with Flow and Nonintrusive Techniques," issue 1).
The test method will measure a flow coefficient value (Cv) during a blowdown at reduced accumulator pressure. The SER for the Fort Calhoun test method will be followed and the recommendations incorporated.
Alternate Test: [2 SIS'141 and 145] will be part-stroke exercised open during cold shutdowns per 20ST-10.1 and 20ST-10.2 (RHR Pump Performance -
Tests). The remaining check valves will be full-stroke axercised open during refueling outages per 2BVT 1.11.3 (St Accumulator Discharge Check Valves Full Stroke Test). As a spr.clat test after i maintenance,20ST-11.15 may be performed to pt,rt-stroke exercise applicable check valve (s) in th,e open direct!on.
i
References:
OM-10, Paragraphs 4.3.2.1, 4.3.2.4(a). 4.3.2.2(d) and 4.3.2.2(e).
Generic Letter No. 89 04, Position 1. l NUREG-1482 Section 4.1.2 (Issue 1).
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a Beav:r Vall y Pow r Statian Unit 2 ,,
em n0 INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 276 of 279 ,
SECTION XI: VALVE RELIEF REQUESTS i
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Bsaver Valicy Powsr Station Unit 2 issue 2 Revision Od ,
INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 277 of 279 VALVE RELIEF REQUEST 1 F
Valve Mark No(s): 2 SIS 141 zsis 14z 2 SIS *145 2 SIS'147 l 2 SIS'148 2 SIS *151 l Category: A/C Class:
j l Syste 11 - S ty injection j Fu lon: T se Safety injection (SI) A mulator series discharge eck
- Ives must open upon de assurization of the RCS du g a loss of coolant accident (LOCA) provide a flowpath from t St Accumulators to the re or coolant system (RCS) id legs.
[2 SIS *141 and 145] st also open to provide a f wpath for the residual heat remo I (RHR) system when it is aced into service for cooldown of t plant to cold shutdown c ditions.
l Test Requi nt: Per OM-10, P agraph 4.3.2.1, "Exercisiri Test Frequency," check' c valves shal exercised nominally e 'y 3 months. Per OM-10, Paragrap 4.3.2.4(a), " Valve obturat Movement,"the necessa valve urator movement shall demonstrated by exercisi the g valve nd observing that the ob retor opens to the positio r red to fulfill its function.
l Basis for Relief: n accordance with 10C .55s(a)(3)(1), relief is req ed on the basis that the propo alternative would provide acceptable level of quality and ety.
These check vai are normally closed as p ure isolation valves (PlV's) ring plant operation to Iso e the lower pressure SI Accumulat from the high pressure R . Their safety position is open for ive low pressure injectic of the Sl Accumulators into the R cold legs during a LOCA. additional safety posit 4n f
[2S 41 and 145] is open to sup RHR system operation d ng-wn of the plant to cold sh own conditions. Full or
-stroke exercising in the o n direction cannot be perf ed during plant operation the RCS is at a higher pr sure than the Si Accumulators. Our cold shutdowns, [2 SIS *1 and 145]
are capable of being p ke exercised in the direction during RHR system ation. However, full-stro exercising of all six check valves in open direction by initiati the maximum required accident ndition flowrate in accor with Generic Letter No. Bosition 1, in addition to -stroke exercising the
. remaining to check valves in the open - lon, cannot be perfor uring cold shutdowns se of a lack of installed instrum ation. A proposed altern method which measures flow cient value (Cv) during lowdown at reduced ac mulator pressure (see ne regraph), also cannot be rformed during cold shutd ns because of a lack of J
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$ Boavor Vallcy Powsr Station Unit 2 issus 2 Revision Odv INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 278 of 279
, VALVE RELIEF REQUEST 1 i
Basis for Relief: installed instrumentat' and an uncontrolled test vol echange i
the St Accumulator scharge MOV isolation valves e opened at Iow RCS pressur . In addition, the reduced pres re which is j required to pe rm this alternate test method ay not always be 1
obtainable ring each cold shutdown. The ore, stroke testing, if attempte t cold shutdowns, could exte the length of a plant
- shutdo due to the extensive prepar ry work in establishing the
- prop RCS and Si Accumulator con ions necessary to perform
- th est, due to delays involved w' installation and removal of te
, uipment inside containment, d for delays while the Si l
i Accumulators are re-filled a pressurized. For [2 SIS *141 a !
145],
OM-10, Paragraph 4.3.2.2 states, "If exe.cising is not pr acable .
i- during plant operation d full-stroke during cold shutd ns is also l 3 not practicable, it m be limited to part stroke durin old shutdown, and fu roke during refueling outages." or the remaining ch valves, OM-10, paragraph 4.3.2 e) states, "If j exercising i
. practicable during plant opor on or during cold' l j sSutdow it ms> be limited to full-strolle ing refueling outages."
Reib requesr.e: si full-stroke exerci the St Accumulator series 04 l'
, dia' arge check vsives in the open ion during each refueling age using a method similar to ' test used at the Fort Calhou
- Muclear Station (Relierence: N 0-1482, Section 4.1.2. "Exerci g 1
Check Valves with Flow and nintrusive Techniques,' Issue .
i The test method will a flow coefficient value (Cv) ring a j i
mulator pressure. The SER f the Fort blowdown at reduced Calhoun test ill be followed and the recom ndations l incorporated.
3 Alter to Test: [2 SIS *141 a 145) will be part-stroke exerci open during cold 4
shutdo 20ST-10.1 and 20ST-10.2 ( Pump Perforrnance i Tests). remaining check valves will ' full-stroke exercised ope uring refueling outages per 2 1.11.3 ($1 Accumulator D harge Check Valves Full Strok est). As a special test after j sintenance,20ST 11.15 may ormed to part-stroke exerc j applicable check valve (s) in t open direction.
]
References:
OM-10, Paragraphs 4.3. ,4.3.2.4(a),4.3.2.2(d) and 4.3. e).
Generic Letter No. , Poettion 1.
NUREG-1482, S 4.1.2 (Issue 1). j 1
DELETED This Relief Request was converted into VROJ51 per the NRC SER for l the Second 10-Year Interval for Pumps and Valves inservice Testing j (IST) Program - BVPS-2, dated November 18,1997.
i
Scavar Vall;y Power Station Unit 2 issua 2 Revision Odv INSERVICE TESTING (IST) PROGRAM FOR PUMPS AND VALVES Page 279 of 279 VALVE RELIEF REQUEST ,_2,,,,_
Valve Mark No(s): 2EGA*SOV202-1 2EGA*SOV202-2 2EGA'SOV2031 2EGA*SOV203-2 Category: B Class: 3 System: 36 - 4KV Station Service (Diesel Air Start) i Function: These Emergency Diesel Generator air start solenoid valves must open to permit air to start the Emergency Diesel Generators.
Test Requirement: Per OM-10, Paragraph 4.2.1.3, " Valve Obturator Movement," the necessary valve obturator movement shall be determined by exercising the valve while observing an appropriate indicator, such !
as indicating lights which signal the required change of obturator I position. Per OM-10, Paragraphs 4.2.1.4(a) and (b), .
" Power-Operated Valve Stroke Timing," the stroke time of all power-operated valves shall be measured to at least the nearest :
'second with a limiting value of full-stroke time specified.
Sasis for Rollef: In accordance with 10CFR50.55a(f)(5)(lii), relief is requested on the basis that compliance with the code requirements is impractical for
, SVPS-2.
i These valves are quick acting and do not have position indication. '
Therefore, in accordance with NUREG-1482, Section 4.2.8, l " Solenoid-Operated Valves.' operation of these valves will be monitored by timing the starting time to rated speed of each Emergency Diesel Genera *or (EDJ). Individual valves will be tested by isolating one bank of air prior to starting the EDG on an l alternating frequency. This will ensure each bank is capable of starting the EDG's in the required time and that the air start -
solenoids are not degrading. Per NUREG-1482, Section 3.4,
" Skid-Mounted Components and Component Subassemblies,' the staff has determined that the testing of the major component is an acceptable means for verifying the operational readiness of the skid-mounted and component subassemblies if the licensee documents this approach in the IST Program.
Alternate Teel: Stroked and Indirectly timed on an alternating frequency in conjunction with 20ST-38.1 and 20ST-38.2 (Emergency Diesel Generator Monthly Tests). Assign a limiting stroke time based on the EDO starting requirementsf """ -- - -- " : '" :Mi t: gg,,
.assepaJeedJa$10 seconds). ,
References:
OM 10, Paragraphs 4.2.1.3, 4.2.1.4(a, nd 4.2.1.4(b).
NUREG-1482, Sections 3.4 and 4.2.8.
t