ML20065Q158
| ML20065Q158 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 12/07/1990 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20065Q155 | List: |
| References | |
| PROC-901207, NUDOCS 9012140243 | |
| Download: ML20065Q158 (38) | |
Text
{{#Wiki_filter:. . - - . ._. . _ . . . . - . _ . l l I l l ENCLO5URE 3 l l i l SECTION 3.0 INSERVICE TESTING PIKXiRAM l't.AN FOR l' UMPS l i ( i i l 1 l 9012140243 901207 PDR ADOCK0500gg{4 P 3
l l 1 Rev. 8 l
- Table of Contents ;
i i
.3.0 Inservice Testing Program Plan for Pumps 3.1 Program Description 3.2 Program Peterences 3,3 Progrnm Tables +
3.4 Notes Note 1 "Daleted" Hote 2 Pumps Lubricated by Pumped Fluid Hote 3 Punip Idle Suction Pressure Hole 4 " Deleted" (incorporated into PR-0) !' Note 5 Essential Service Water Hake Up Pumps Inlet and Differential Pressure. 3.5 Relief Requests , PR-1 Pump Vibration PR-2 pump Dearing Temperatures PR-3 " Deleted" PR-4 " Deleted" . PR-5 Use of Ultrasonic riowmeters PR Diesel Oil Transfer Pump Differential Prescure DRAFT PR-1 Pump Vibration DRAFT PR-2 Pump Bearing Temperatures , DRAFT- PR-7 EX Pump Vibration 3.0 - page 1 of 1 (0009D/0034D
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i l 4 l i. SECTIOPf 3,1 j PROGRAM DESCRIPTI(m
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Rev. 8 l 1 1 J l'.EOGlWi lTECRill10t{ The Pump Inservice Testing (IST) Program Plan for Byron Nuclear Power i Station Units 1 and 2, is implemented in accordance with the requirements I of Subsection !WP of Section XI of the ASME Boller and Pressure Vessel Code, 1983 Edition, through the Summer of 1983 Addenda. Where these ! requirements are determined to be imprectical, specific relief is l 3 requested. Additional pump relief requests may be necessary and these ) will be identified during subsequent inservice tests. Byron Station received a Safety Evaluation Report (SEP) on September 15, 1988 and is l listed in Table 2 of HRC Generic Letter 89-04 as a plant with a reviewed IST Program and SER lasued. Per NRC Generic Letter 89-04, the status of relief requests as stated in the SER is unchanged. Any modifications to Byron Station relief requests approved in the SER (FR-1 through PR-5), which are covered by one of the eleven positions discussed in NRC Generic Letter 69-04 Attachment 1, must be performed in accordance with the guidelines given in the Generic Letter. Pre-approval is granted for all , tellef requests submitted which are consistent with the eleven positions < given. New relief requests dealing with a position-not covered by HRC Generic Letter 89-04, Attachment 1, must receive NRC approval prior to implementation.- The pumps subject to ISI testing are those pumps which are' identified in eccordance with the scope of ASME Section XI, subsection !WP-1100: "1WP-1100 SCOPE... This Subsection provides the rules and requirements for Inservice testing of Class 1, 2, and 3 ; centrifugal' and displacement type pumps that are installed in light-water cooled nuclear power plants, that are required to perform a specific function in shutting down a reactor or in mitigating the consequences of an accident, and that are provided with an emergency power source. The results of these tests are to be used in assessing operational readinest , of the pumps during their service lif e." V , The only exceptions are the diesel driven auxillary feedwater pumps (IAr01PD and 2Ar01PD), and essential service water makeup pumps (OSX020A , and OSX02PB),.which are not supplied by an emergency power source. The diesel oli transf er pumps (1/2 D001PA, 1/2D001PH, 1/2D001PC and I 1/2DOO1PD) are classified none-ASME Class-G. Pump reference values shall be determined f rom the results of a preservice test, which may be run during preoperational testing, or from _ the results of the first inservice test run during power operation. Reference values shall be at points of operation readily duplicated during subsequent inservice testing. Additional reference values may be necessary and these will be taken in accordance with IWP-3111 and 3112:
- 1. . After a pump has been replaced,
- 2. When a reference value or set of values may have been affected by repair or routine servicing of a pump, or
- 3. If it la necessary or desirable for some other reason than 1 or 2 above.
3.1 - page 1 of 2 (0089D/0034D)
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1 Rev. H J' f Per NRC Generic Letter 89-04, Attachment 1, Position 40, whenever pump data is determined to be within the Required Action Range, the pwnp is j Inoperable, and the Technical Specification I,CO Action st.atement time l I
. starts.
. In the event a pump inust be declared inoperable as a result of inservice 3 testing, limitations on plant operation will be as stated in the Technical Specifications. Section XI of the ASME Boller and Pressure Vessel Code shall not be construed to supersede the requirements of any Technical Specification. 1 5 l: I i-e l l l l h 3.1 - page 2 of 2 ! (0009D/0034D)
l 1 l l I i i SECTION 3.2 l'ROGRAM REFERENCES f ( 1 1 l l l
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Rev. 8 EROGEMLREEIREliCES
- 1. Title 10, Code of rederal Regulations, Part 50, Domestic Licensing of Production and Utilisation recilities, particularly Section 50.55a, Codes and Standards.-
- 2. ASME Doller and Pressure Vessel Code, Section XI, Rules for Inservice Inspection of Nuclear Power Plant Components, 1983 Edition, Summer 1903 Addenda.
- 3. ASME/ ANSI OH-1987, Operation and Maintenance of Nuclear Power Plants, including 1989 Addenda, Part 6, Inservice Testing of Pumps in Light Water
-Reactor Power Plants.
- 4. U.S. Nuclear Reguintory Commlnsion, Generic Letter 89-04, Guidance on Developing Acceptable Inservice Testing Programs.
- 5. Dyron Station UTSAR, Section 3.9.6.1, Inservice Testing of Pumps.
- 6. Dyron Station Technical Specification, 3/4.0.5, Generic ASME Program Requirement.
- 7. _ Byron Station Technini Staff Procedure, DVP 200-1, ISI Requirements for Pumps .
D. NRC Safety Evaluation Reports (SER's):
- a. 09/15/88 (Initial Program Plan Review)
- b. 09/14/90 (Supplemental Program Plan Review)
- 9. Dyron Slalon IST Pump Program Plan Review Responses (files 3.11.0240):
i- e. Dyron Letter 60-1321 (Inlllal Progran Plan Review Response)
- b. Dyron Letter 90-0724 (Supplemental Program Plan Review Response) 3.2 - page 1 of 1 (0009D/0034D)
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1, 4 SECTIOff 3. 3 l'R(X:kAM TAB 1J.S 1 l 1 l 1. I 1 l-r I
Rev. 0 7ABLE.DEDfRIETIQi The following information le included in the summary tables: The first four coltunns include the unique Byron Station f;gulpment Piece thunbe r , the pump Name, the Code Class, and the system P f. ID f or the pump listed. Spes4: Speed will be measured by a tachometer for variabic speed drives. Inlet _ pressures Inlet pressure will be measured via permanently installed ! gauges or other means, provided the equipment accuracy ineets the requirements I of IWp-4150. This la to be measured both before pump startup and during the test. D1UerentlaLpres sute t Differential pressures will be measured using calibrated differential pressure gauges or by recording the difference between calibrated inlet and outlet pressure gauges. ElpLtat.c s Plow rates will be measured using permanently installed instru-
-mentation or other means, provided that equipment accuracy meets the requirements of.1HP: 4150.
Ylbintion Vibration measurement shall be made using portable or hand held
-instruments at locations ac marked on the pumps. '
De a r ing . Temper atur.e t Bearing temper ature w111 be measured by perinanently ! lustalled devices where such devices are present. Portable measur ernent devices will be used where temperature wells are provided. Per IWp-3300, bearing temperaturen are required only once per year. Byron R Station takes the data for bearing temperatures once per year during summer testing and following maintenance on a pump ll bea:Ing temperatures inny have been affected. Ics Linter.yoll An Inservice test shall be run on each pinnp nominally every . 3 months during normal plant operation, in accordance with IWp-3400, except ! during periods when the pump la not required to be operable. ; LubricatiotLLeVF1: Lubrication level will be observed through sight glasses for the pumps listed in the progrcun. Ravision The current revision of the program is listed. Table _page: The tabac pages are nutnbered sequentially and show the total number of pager.. 1 (0009D/0034D 3.3 - page 1 of 1 l -^ O
i INSERVICE TESTING PROGHAM PLAN Rev. 9 CLASS 1, 2,'& 3 PUMPS I r 4 j BTECN NUCLEAR POWER EYATIN
; UNITS O, 1, 2 !
i i C im PARAk.as5
..y A I LUBRI-I-
1 S .. SYSTEM INLET DIFF FLCW BEARING TEST CATICN l EI2fP WCMDER PUMP NAME S P & ID SPEED PRES PRES RA"I VIHRATICN N la m AL LI]QL REMART.5 j lAF01PA Auxiliary feedwater 3 M-37 No Yes Yes Yes PR-1 Yes Quarterly Yes i
- . pump (Motor) t IAF01PB Auxiliary feedwater 3 M-37 Yes Yes Yes Yes PR-1 Yes Quarterly Yes i pump (Diesel) l 1
- c. 2AFOlPA Auxiliary feedwater 3 M-122 No Yes Yes Yes PR-1 Yes Quarterly Yes 1 pump (Motor) j 2AFOlPB Auxiliary feedwater 3 M-122 Yes Yes Yes Yes .PR-1 Yes quarterly Yes pump (Diesel) i i i
OCC0lP Component cooling 3 M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 3 . t , pump t 4 1CC0lPA Component cooling 3 M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 3 l pump j ICC0lPB Component cooling 3 M-66 No Yes .Te s PR-5 PR-l' PR-2 Quarterly Yes Note 3 pump 2CCOlPA Component cooling 3 M-66 No Yes Yes PR-5 PR-1 FR-2 Quarterly Yes Note 3 i Pump j 2CColPB Component cooling 3 M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Fote 3
- pump i.
ICS0lPA Containmant spray 2 M-46 No Tes Yes Yes PR-1 PR-2 Quarterly No Note 2 Pump ICSOlPB Containment spray ~ 2- M-46 No- Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 ! Pump i ! (0090D/0034D) 1 3.3 TABLE 1 of 4 > a
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INSERVICE- TESTING PROGHAM PLAN Rev. 8 CLASS 1, 2, & 3 PUMPS BTECN NUCLEAR PCWER M TION UNITS 0, 1, 2 C 7 g- pm3 L A LITBRI-S disits INLET DIFF FLCW BEARING TEST CATICN PUMP NUMBER PUMP NAME S P & ID SPEED PRES PRES RATE VIERATION TEMP INTER 7AL REQfARKS 2CS01PA Containment spray 2 M-129 No Yes Yes Yes PR-1 FR-2 Quarterly No Note 2 PSP 2CS01PB Containment spray 2 M-129 No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 P2P 1CV01PA Centrifugal charging 2- M-64 No Yes Yes PR-5 PR-1 Yes Quarterly Yes PSP 1Cv01PB Centrifugal charging 2 M-64 No Yes Yes PR-5 PR-1 Tes Quarterly Tes PSP 2Cv01PA Centrifugal charging 2 M-138 No Yes Yes PR-5 PR-1 Tes Quarterly Tes i P"P f 2CV01PB Centrifugal charging 2 M-138 No Yes Yes PR-5 PR-1 Tes Quarterly Tes [ P2P , 1DOO1PA Diesel oil transfer 3 M-50 .No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 i t ID001PB Diesel oil transfer 3 M-50 No Yes PR-6 P2-5 PR-1 PR-2 Quarterly No Note 2 ; i Pum.p i 1DOO1PC Diesel oil transfer 3 M-50 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 j PSP 1DOO1PD Diesel oil transfer 3 M-50 ho Yes PR-5 PR-5 PR-1 PR-2 Quarterly No Note 2 PSP (0090D/0034D) 3.3 TABLE 2 of 4 I h I w .
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I'N S E R 7 I C E TESTING PROGEAM PLAN Hmr. 3 CLASS 1, 2, & 3 PUMPS BTECN NUCLEAR POWER STATION UNITS 0,-1, 2 C TEST PARAMETERS { L I A LUBRI-INLET DIFF FLOW BEARING TEST CATION
.S SYSTEM S P & ID SPEED PRES PRES RATE VIBRATICN TEMP Ih11avAL LE7EL REMAEES.
PUMP NUEER PUMP NAME No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 2D001 A Diesel oil transfer 3 M-130 PSP M-130 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 2D001PB Diesel oil transfer 3 PSP No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 2DOO1PC Diesel oil transfer 3 M-130 PSP No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 2D00lPD Diesel oil transfer 3 M-130 P"P No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 1RHOIPA Residual heat 2 M-62 removal pump No Yes Yes PR-1 PR-2 Quarterly No Note 2 1RH0lPB Residual heat 2 M-62 .Ter removal pump M-137 No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 2RH0lPA Residual heat 2 removal pump No- Yes Yes PR-1 PR-2 Quarterly No Note 2 2RH0lPB Residual heat 2 M-137 Yes removal pump 2 M-61 No Yes Yes Yes PR-1 Tes Quarterly Tes ISI0lPA Safety injection Pump 2 M-61 No Yes Yes Yes PR-1 Tes Quarterly Yes ISI0lPB Safety injection PSP Yes Yes Yes PR-1 Tes QuarterIT Tes 2SI0lPA Safety injection 2 M-136 .No PSP . 3.3 TABLE 3 of 4 (0090D/0034D)
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INSERVICE TESTING PROGRAM PLAN Rev. 8 CLASS 1, 2,-& 3 PUMPS , BTECK NUCLEAR POWER STATION UNITS O, 1, 2 , C N PARAMETERS ! L 4
- i. A LUBRI-4 S SYSTEM INLET DIFF FLON BEARING TEST CATICN v PUMP NUMBER PUMP NAME S P & ID SPEED PRES PRES EATE VIBRATION TEMP INTERVAL LEVEL REMARKS a
i 1 2SIO1PB Safety injection 2- M-136 No Yes Yes Yes PR-1 Yes Quarterly Yes pump- ;
- i. OSIO2PA Essential service 3 M-42 Yes Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 5 i water makeup pump ;
(Diesel) 4 OSX02PB Essential service 3 M-42 Yes Yes Yes PR-5 PR-1 PR-2. Quarterly Yes Note 5 ! water makeup pump ! (Diesel) I i ISX0lPA Essential service 3 M-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note 3 , water pump [ l 1SI0lPE Essential service 3 M-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note 3 water pump ; s [ 2SIOlPA Essential service 3 M-42 No .Ye s Yes PR-5 PR-1 Yes Quarterly Yes Note 3 p water pump ! j' 2SX0lPB Essential service 3 M-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note 3 . water pump [ 4 I OWOOlPA Control room 3 M-118 23 o Yes- Yes Yes PR-1 PR-2 Quarterly Yes Note 3 f 4 chilled water pump l l I i OWOO1PB Control room 3 -M-118 Fo Yes Yes Yes PR-1 PR-2 Quarterly Yes Note 3 j chilled water pump ;
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i t i 4 (0090D/0034D) 3.3 YABLE 4 of 4
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1 SECTION 3.4 NOTES t l l
NOTEl
" Deleted" RQ15 2 The Diesel Oil Transfer (IDOO1PA-D and 2DOO1PA-D), Res1 dual Heat Re.aval (1RH01PA,B and 2RH01PA.D) and Containment Spray (ICS01PA,B and 2CS01PA,D),
pumps cannot be measured for lubrication lev 61. These pumps are lubricated by the f.luid pumped and hence have no indication for lubrication level. HQTE_3 The Component Cooling Water pumps (OCC01P, ICC01PA,B and 2CC01PA,D), Essential Service Water Pumps (ISX01PA,B and 2Sx01PA,D), and the Control Room Chilled Water Pumps (OWOO1PA, D) are in systems which are in continuous operation. The idle inlet pressure for these pumps canntt be obtained without Interrupting norrnal system operation and causing system transients. The idle inlet pressure will be_ recorded Snly if the pump to be tested is not in operation at the start of the test. Proper pump operation is assured by continuous pump operation as well as quarterly monitoring of the remaining ISI pump parameters. NOTE _4 -
" Deleted" NOTL5 The essential Service Water Make Up pumps (OSX02PA and OSX02PD) are submarged, vertical well type pumps. They take their suction from a River Screen House (RSH) forebay. The inlet suction pressures for the pumps can not be measured in:en much as they are well type pumps. Furthermore, inlet pressure shall be calculated f rom a dif ference of river and pump lovel. The allowable range for the Anlet pressure shall be determined from high and low river levels specified in the Technlen) Specifications and pump vendor information.
(0091D/0034D) 3.4 page 1 of 1 2
SECTION 3.5 RELIEF REQUESTS e i l
Rev. 8 RELIEr REQUEST NO. PR-1
- 1. EUME_HUMDERt All pumps in the program plan.
- 2. HUMDER_Of_1TEMS: 41 pumps.
- 3. ASMLCODL_ CLASS . *t3 1.
- 4. ASMLCODE,_SECIIDull_REQU1EEMENTS : In reference to Table IWP-3100-2,
" Allowable i 2nges of Test Quantitles", pump vibration is to be measured in and compared to values given in mils displacement.
- 5. BASIS FOR_ RELIEF The measurement of pump vibration is required so that developing problems'can be detected and repairs initiated prior to a pump becoming inoperable. Measurement of vibration only in displacement quantitles does not take into account frequency i
which is also an important factor in determining the severity of the vibration.
- 6. AbTLENATLIESIING The ASME Code minimum standards require measurement of the vibration amplitude in mils (displacement). Dyron Station proposes an alternate program of measuring vibration velocity (inches pet second) which is more comprehensive than that required by Soction XI. This technique is an industry-accepted meth'd which is much more meaningful and sensitive to small chant,es that are indicativo of developing mechanical problems. These velocity measurements detect not only high mnplitude vibration, that ludicate a major mechranieni problem such as misalignment or unbalance, but also the equally harmf ul low amplitude, high f requency vibratlow due to bearing wear that usually goes undetected by simple displacement.
, measurements. l (00910/0034D) 3.5 page 1 of 22 l
Rsv. O The allowable ranges of vibration and theit associated action levels will be patterned after the guidelines established in
' ANSI /ASME OH-6 Draft 8, Table 6100-1 and P1gure 6100-1. These ranges will be used in whole to assess equipment operational-readiness for all components except the Essential Service Water Make-up Pumpe OSX02PA & D.
The acceptable performance range for all components except the Essential Ser*;1ce Water Make Up Pumps OSX02PA & H will be 12.5 times the reference value, not to exceed .325 Inches per second. The alert range, at which time the testing frequency , would be doubled, will be > 2.5 to 6 times the reference value, not to exceed .70 Inches per second. Any vibrating velocity greater than 6 times the reference value or greater than .70 inches peer second will require corrective actions to be performed on the affected component. The OSX02PA & B Pumps, however, are submerged vertical well type pumps utilizing diesel engine prime movers rated at 228 continuous break horse power and are coupled directly to these engines through right angle gear drives. These prime movers and gear drives are elevated to protect them against the technical specification postulated flood scenario and the pumps hang vertically down 41' 4" from the bottom of the right angle
, gear drive to their respective pump suction inlet basket strainers. These pumps are of a water lubricated, hollow line shaft drive, seven stage type and utilize rubber line shaft bearings along their length.
-(0091D/0034D) 3.5 page 2 of 22
Esv. 8:
'Therefore, these OSX02pA & d pumps, due to their design, wl11 experience vibration velocity readings that will normally.
exceed 0.4 inches per second. A vibration of this magnitude would-fall into the " Alert" range of the ANSI /ASME OM-0, Table 6100-1 and would require " Doubling the Test frequency". For these reasons, given the inherent operating characteristics of the OSK02PA & D pwnps and the testing constra!nts of the ANSI /ASME OH-6, Dtaft 8 Document, the guidance set forth in Table 6100-1 and Figure 6100-1 will be slightly modified so as , to more accurately assess equipment operational readiness. The acceptable performance range of the OSX02PA & B pumps will be 1 2.5 times the reference value, not to exceed .60 inches per second. The alert range, at which point in time the testing frequency would be doubled, will be > 2.5 to 6 times the reference value, not to exceed .90 inches por second. Any-vibration velocity greater than 6 times the reference value or greater than .90 inches per second will require corrective actions to be performed on the affected component. This reference value is established based on the guidance set forth in ANSI /ASME OM-6, Draf t 8 and prior operating history of these pumps. The operating history consists of approximately 3 years of operation and testing, and provides sufficient data base , from which to establish the aforementioned criterla. This critoria is based upon a sufficient amount of baseline data to l l 4 provide for the monitoring of pump degradation to the-greatest 1 i l extent possible given this prime mover / pump configuration. ; l I (0091D/0034D) 3.5 page 3~of 22
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Rev. 8 for all-pumps, evaluation of data, to assign equipment to the alert or action ranges, will be done within 96 hours (per INP-3220 of Section XI). This will be done using industry accepted vibration analysis equipment, such as a full spectrum analyzer. Vibration' measurements for all pumps will be obtained and recorded in velocity, inches per second, and will be broadband unfiltered peak' measurements. The monitored locations for vibration analysis will be marked so as to permit subsequent duplication in both location and plane. The frequency response range of the vibration transducers and their readout system shall be capable of frequency responses from one-third minimum pump shaft rotational speed to at least one thousand hertz. The Centrif ugal Pumps in the procram will have vibration measurements taken in a plane approximately perpendicular to the rotating shaft in two orthogonal directions or each accessible pump bearing housing and in the axial direction on each accessible pump thrust bearing housing. The Vertical Line Shaf t Pumps in the program will have vibration measurements taken on the upper motor bearing housing in three orthogonal directions, one of which is the axial-direction. (0091D/0034D) 3.5 page 4 of 22
Rev. 8
- 7. J11ETILLCATL0t{ s Monsurements of vibration in mils displacement are not sensitive-to small changes that are indicative of developing mechanical .
1 problems. Therefore, the proposed alternate method of measuring vibration amplitude in inches /second provides added assurance of the continued operability of the' pumps. 8.- AEELLCARLE TIME PERIOD This relief is requested once-per quarter during the first inspection interval. 9 .' AEPROVAL STATUE 1
- a. Relief granted except f rom Required Action for the OSX02A/B pumps per SER-9/15/88. The SER evaluation concerns regarding measurement of the essential service water makeup pump inlet pressures were resolved and
- verbal approval to use this relief request was obtained based on the December 12, 1988 conferenco call with Byron /Braidwood ISI members, R.
Chrzanowski (Byron NLA), H. Rockhold and S. Ilartley (EG & G Idaho /NRC). t
- b. Relief granted per NRC Generic Letter'89-04.
- c. Relief pending per SER,9/14/90. This relief request will be revised and resubmitted.in March 1991.
i ( 004,1D/ 0034 D) 3.5 page 5 of 22
Rev. 8 RELIEP REQUEST NO. PR-2
- 1. .20ME_HUMDER: OCC01P, ICC01PA, ICC01PD, 2CC01PA, 2CC01PD, IC801PA, 1CS01PD, 2CS01PA, 2C801PD, IDOO1PA, 1DOO1PD, IDOO1PC, IDOO1PD, 2DOO1PA, 2DOO1PB, 2DOO1PC, 2DOO1PD, 1RH01PA, 1RH01PD, 2RH01PA, 2RH01PD, OSX02PA, OSX02PD, OWOO1PA, OWOO1PB
'2. NUMBER _Or_ ITEMS 1 25 pumps 3.- ASME_CODLCLAFS: 2&3
- 4. AS}iE_C00L EECIl0H_XI._REOUIREMENTS: Per 1HP-3100, Inservice Test.
Procedure pump bearing temperatures are required to be measured to
' detect any change in the mechanical characteristics of a bearing.
INP-3500(b) requires three successive readings taken at ten minute intervals that do not vary more than 3%.
- 5. DASl!LEQILEELIEE:
a .- These pumps' bearings are not provided with permanent temperature detectors or thermal wells.- Therefore, gathering data on bearing temperature is impractical.
- b. The only' temperature measurements possible are from the bearing housing.. To detect.high bearing temperature at the bearing housing would require that_the bearings in question be seriously
' degraded.
c.: Measurement of housing temperature on these pumps does not provide positive information on bearing condition or degradation. For example, - the bearings on the Essential Service . 1 Water pumps (OSXO2PA, OSX02PS) and Diesel Oil Transfer Pumps (1DOO1PA thru D and 2DOO1PA thru D) are cooled by the pumped-fluid.
-(0091D/0034D) 3.5 page 6 of 22 l
l
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Rev. 8 L Therefore, any heat generated by degraded bearings is carried away by the cooling fauld and would not be directly monsured at the bearing housing.
- 6. ALTElitlhTE_TISIlllG No direct alternate test la proposed for bearing temperatures. However, measurement of hydraulle parameters and vibration readings do provide a more positive method of monitoring pump condition anJ bearing degradation.
-7.- J11SILEICATIDif t Dy measuring pump hydraulle parameters and vibration velocity, (as described in PR-1), pump operability and the trending of ;
mechanical degradation is assured. Also, since these paramotors (i.e., hydraulle parameters and vibration) are measured quarterly, the pump mechanical condition will be more accurately determined than would be. possible by measuring bearing temperature on a yearly basis.
- 8. AEELICABLE TIME PERIORL This rellef 1s requested once per year, during the first inspection. interval.
- 9. Aff. ROYAL.ETATUSA
- a. Rollef granted per SER 9/15/08.
b.. Rellof granted por NRC Generic better 89-04,
- c. Rollet granted per SER 9/14/90.
(00910/0034D) 3.5 page 7 of 22
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Rev. 8 RELIEr RCf, NEST NO.' PR-3
" Deleted"
.>. l 1
l l l I;. l. lL i i 1 \ -{ {' l
)
i-l '. t l -- i 1-I a i l' (0091D/0034D) 3.5 page 8 of 22' l u I c .F n e- y. y- -. s &
.31 Rev. C' m
RELIEF REQUEST NO. PR-4 s
"Delet.ed"
'I 1 -
.t i
(0091D/0034D) 3.5 page 9 s* 22
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P Rev. 8 RELIEF REQUEST NO. PR-5
- 1. EUME_ NUMBER 1 DCC01P,. ICC01PA, ICC01PB, 2CC01PA, 2CC01PD, ICV 01PA, ICV 01PB, 2CV01PA, 2CV01PD, 1DOO1PA, 1DOO1PB, 1DOO1PC, IDOO1PD, 2DOO1PA, 2DOO1PD, 2DOO1PC, 2DOO1PD, OSX02PA, OSX02PL, ISX01PA, ISX01PD, 2SX01PA, 2SX01PD
- 2. HUliDEE DLITEMS: 23 pump;.
- 3. AStiLCQDE._ CLASS _1 2&3
- 4. .ASME fDDE1_.SECIl01LXI_REQUIREtiLRTS: Per IWP-4120, the full scale range of each instrument shall be three times the reference value or less.
- 5. DASifufQlLRESIED The full scale range of ultrasonic flowmeters, used to collect Section XI flow data, exceed three times the reference value.
- 6. ALTEEHATE_IEST1HG1 Ultrasonic flowmeters, with digital readouts and totalizer features will be utilized to obtain Section XI flow data.
- 7. JUSIlflEATIOili Ultrasonic flowmeters provide an accurate means of measuring 4
flowrate.- They utilize a digital display whose accuracy is independent of the full scale range. The ultrasonic flowmeter is well within the requirements of IWP-4110 and IWP-4120, which refer to an instrument accuracy of 4 2 % of full scale'for an instrument with a range of three times the reference value or less. The following examples will illustrate this point. - The component cooling pumps (OCC01P, 1/2CC01PA, and 1/2CC01PB) have a reference value of approximately 4500 gpm. Using the Code requirements, an instrument with a full scale range of 13,500 gpm (3 x 4500 gpm), the acceptable instrument accuracy is a 270 gpm (.02 x 13500 gpm). Using the ultrasonic flowmeter, with an accuracy of A 4% of the indicated reading, provides an instrument accuracy of i 180 gpm.(.04 x 4500 gpm). (0091D/0034D) 3.5 page 10 of 22
Rav. 8' Tha diosal . oll transf er pumps (IDOO1PA-PD and 2D001PA-PD) have a reference value of approximately 25 g[e. Using the Code requirements, an instrument
- with a full scale of 75 gpm (3 x 25 gin) the acceptable instrument accuracy is 1 1.5 gpm (.02 x 75'gpm). Using the ultrasonic flowmeter with an accuracy of 3 4% of Indicated reading will provide an Instrument accuracy of i 1.0 gpm (.04 x 25 gpm).
Use of an ultrasonic flowmeter, with totalizer and Integrator feature, instead of other Instruments allowed by IWP-4110 and IWP-4120, will provide more precise and accurate flow measurements. B. APELlCADLE TIME _EERLOR: This reller is requested once per quarter, during-the first inspection interval.
- 9. APPROVAL STATUS:
- a. Relief granted per SER 9/15/88.
- b. Rollef granted per NRC Genoric Letter 89-04.
- c. Relief granted per-SER 9/14/90.
i-l (0091D/0034D) 3.5 page 11 of 22
.~ - -. . . =.- - - - .
Rev. 8 RE',1Er REQUEST NO. PR-6
- 1. PUliE flUMDERI. 1DOO1PA, 1DOO1PB, 1DOO1PC, IDOO1PD, 2DOO1PA, 2DOO1PD, 2DOO1PC, 2DOO1PD,
- 2. NUMEIR OF ITE115: 8 pumps
- 3. A.SME.SODE_ CLASS.1 3
- 4. ASME_CODI, SECTIOfLXLREQUIREMENIS: Per IWP-3100, differential pressure shall be measured on all pumps that are tested.
- 5. DAEIS_f_0B RELIEE: These pumps are positive displacement Diesel Oil Transfer Pumps. The pump differential pressure is not a factor affecting pump performance, but rather dependent only on the inlet pressure to the pump. As the pump discharge pressure is constant, and the inlet pressure varies with tank '
level, the differential pressure is not a valid operational parameter.
- 6. ALTERHATE_.2ESIIRG : Pump discharge pressure for positive displacement pumps is a valid operational parameter. This will be used to evaluate the Diesel Oil Transfer Pumps performance.
- 7. JUSIlfl.CAllOH1 Using pump discharge pressure in lieu of pump differential pressure will provide meaningful pump performance data for evaluation of operational readiness of the Diesel Oil Transfer Pumps.
- 8. AEELLCARLE._IIMLPER100: This relief is requested once per quarter during the
.first inspection interval.
- 9. AEERQVAL ETAWS_1.
- a. 'Reller granted per SER 9/15/88.
- b. Relief granted per NRC Generic Letter 89-04.
- c. Relief granted per SER 9/14/90.
(0001D/00340) 3.5 page 12 of 22
Rev. 8 e e DRAPT REVISION OF RELIEF REQUEST NO PR-1
- 1. - EUME.!!UMBERt All pumps in the program plan.
- 2. tWMUER_Of._ ITEMS - 41 pumps.
- 3. ASME.f0DE._ CLASS : 2&3
- 4. ASME f0Dru_.1ECIlotLXL_REQU.1EEMEllIS (a) In reference to Table IWP-3100-2, " Allowable Ranges of Test Quantit.les",
pump v.ibration is to be measured in and compared to values given in mils displacement. (b) In reference to ANSI /ASME OMb-1989, Part 6 measurement of vertical pump bearing vibration is required at the upper motor bearing in three orthogonal directions. This portion of the code also requiron measurement of.Iower pump bearing vibration.
- 5. DASIS_EDIL.EELIEE (a) The measurement of pump vibration is required so that developing problems can be detected and repairs Initiated prior to a pump becoming inoperable.
Measurement of vibration only in displacement quantities, as required by the ASME Code, does not take into account frequency which is also an important factor in determining the severity of the vibration. 1 (0091D/0034D) 3.5 page 13 of 22
. . - _ _ _ - . _ . _..-._. . . ~ ~ _._ .-- _ - , _ _ . _ _ . _ . . _ _ _ _ _ - . _ . . _ . . . _-
Rev 8 . s' s DRAFT REVISION OF RELIEF REQUEST NO. PR-1 n: ' ,
'(b) Measurement of' vertical pump bearing vibration is required at thetupper y motor bearing in three orthogonal directions, one of which is axial,'by
- " OM-part.6. The-thrust bearing on the vertical Containment Spray' Pumps (CS)
+ q i 4 .
and Residual Heat Removal Pumps'(RH) is located at the Anxit motor bearing, i_- therefore, the most effective axial bearing vibration monitoring point for: _ { Dyron Station's vertical CS & RH pumps is at the 12ERI motor bearing. .; w 4
- 0M-Part 6 also requires measurement of lower. pump bearing vibration. The 7 RH 'and CS pumps and motors have an integral shaf t and no pump bearings.
.,, The lower motor bearing serves as the pump bearing.
- 6. .ALTEENATE TESTING 4-s.;.
/(a) The.AShE Code. minimum standards require measurement of the vibration
. amplitude in mils (displacement). Byron Station proposes an alternate
. program of measuring vibration velocity (inches per second) which is more y '
comprehensive'than-that required by Section XI. This technique is an industry-accepted method which is much more meaningful and sensitive to small changesi that. are s in'dicative of developing mechanica11 problems. These-l velocity ' measurements detect not only high amplitude vibration, _ that- -
- -indicates a major-mechanical problem such as misalignment or unbalance, but-1g.
,; a:
.also the equally harmful low amplitude, high frequency vibration due to H.' .
1 f, bearing wear that usually.goes-undetected by simple displacement
. measurements.' '
p,' l' l-l5 1 (0091D/0034D)c 3.5 page 14 of 22 dn M L ,- , -b-4.c.w., n, i,+% i,..e , ,~,-n,, c - ty - -.e----, y-- w w y v v.*
Rav. 8 e e DRAFT REVISION OF RELIEF REQUEST NO. PR-1 The allowable ranges of vibration and their associated action levels will be patterned after the guidelines established in ANSI /ASME OMb-1989, Part 6, Table 3 and Table 3a. These ranges will be used in whole to assess equipment operational readiness for all components except the Essential Service Water Make-up Pumps OSX02PA & B (see PR-7). The acceptable performance range for all components (except the Essential Service Water Make Up Pumps OSX02PA & B) will be 12.5 times the reference value, not to exceed .325 inches per second. The alert range, at which . time the testing frequency would be doubled, will be > 2.5 to 6 times the reference value, not to exceed .70 inches per second. Any vibrating velocity greater than 6 times the reference value or greater than .70
-inches per second will require corrective actions to be performed on the affected component.
For all pumps, evaluation of data to assign equipment to the Alert or Required Action ranges, will be done immediately per the requirements of NRC Generic Letter 89-04, Attachment 1, position 8. This will be done using industry accepted vibration analysis equipment, such as a full spectrum analyzer. l 1 l
-(0091D/0034D) 3.5 page 15 of 22 i
I
Rsv. 8 DRAFT REVIS101 OF RELIEF REQUEST NO. PR-1 Vibration measurements for all pumps will be obtained and recorded in velocity, inches per second, and will be broadband unfiltered (filtered-out (IRD) or total (TEC Smart meter)) peak measurements. The monitored locations for vibration analysis will be marked so as to permit subsequent duplication in both location and plane. The frequency response range of the vibration transdur'rs and their readout system shall be capable of f requency responses f rom one-third minimum pump shaft rotational speed to at least one thousand hertz. The Centrifugal pumps in the program will have vibration measurements taken in a plane approximately perpendicular to the rotating shaft in two orthogonal directions on each accessible pump bearing housing and in the axial direction on each accessible pump thrust bearing housing. (0091D/0034D) 3.5 page 16 of 22
Rev. 8 - ;
;}
- s ,
. DRAFT REVISION OF I RELIEF REQUEST NO. pR-1 ;
- a. 1 E
[-
- (b)- The Vertical. Line Shaf t Pumps in the program (1/2RH01PA, 1/2RH01PB, 1/2CS01PA, and 1/2C801PB) will have vibration' measurements taken'on the !
. upper motor frame in two orthogonal directions, in a plane approximately 9
. perpendicular to the' rotating shaft. Vibration measurements w'11I also j i
be taken in.three orthogonal directions on the lower motor / pump. frame, one of which is'the axial direction.- This is contrary.to OMb.1989, Part 6, Section 4.6.4, which requires the axial direction at the upper motor ! bearing housing. This is because the thaast bearing is located in the lower frame of the motor for-the RH and CS pumps at Byron Station. The !
- .. . .l
. radial bearing is located at the upper motor frame and is inaccessible '
due to the presence of a motor dust cover.. The-RH and CS pumps and motors have an integral shaft (and no pump ! Lbearings), therefore no pump. bearing measurements will be taken. l l7.- . JUSTIFICATION-(a) Measurements.of vibration in mils displacement are not sensitiveEt1 smal1~ changes that- are indicative lof developing mechanical problems. Therefore, the-proposed alternate method of measuring vibration y -amplitude in inches /second (in conjunction with the use of the allowable vibration ranges and limits as established in ANSI /ASME OMb-1989, Part 6). provide's added assurance of the continued operability'of the pumps. i (0091D/0034D) 3.5 page 17 of 22
Rev. 8 (b) The thrust bearings. on the Vertical Lina Shaf t Containment Spray .' umps
.(CS) and Residual Heat Removal Pumps (RH) are located at the lower motor bearings.therefore, measurement of axial vibration at the lower motor-bearings will provide more effective trending of axial vibration on these pumps.
I (c) Vibration measurements can not be taken on the pump bearings of the RH and CS pumps. Pump bearings do not exist in these pumps.
- 8. APPLICABLE TIME PERIOD This relief is requestad once per quarter during the first inspection interval.
- . 9. APPROVAL STATUE 1 LThis relief request is a proposed change to the approved PR-1 and is HQI approved for use. Formal written approval from the NRC is required SIlgr. to changing the vibration monitoring points on the vertical line shaft pumps in the program. (1/2RH01PA, 1/2RH01PB,
-1/2CS01PA, 1/2CS01PD). Expedited review and approval is requested.
7-l' l L (0091D/0034D) 3.5 page 18 of 22
Rev. 8 e e DRAFT REVISICH OF RELIEF REQUEST NO. PR-2
- 1. PUMP NUMRER1 All pumps in the program plan.
- 2. HUMBER_OF ITEMS: 41 pumps
- 3. ASME CODE CLASS: 2&3
- 4. ASME CODE. SECTIDIL.XI REQUIREMCHTS: Per IWP-3100, Inservice Test Procedure pump bearing temperatures are required to be measured to detect any change in the mechanical characteristics of a bearing.
IWP-3500(b) requiret three successive readings taken at ten minute intervals that do not vary more than 3%.
- 5. BASIS FOR RELLE[
- a. The CC, CS, DO, RH, SX and WO pumps' (25 total) bearings are not provided with permanent temperature detectors or thermal wells.
Therefore, gathering data on bearing temperature is impractical. The only temperature measurements possible are from the bearing housing. Hepsurement of housing temperature on 1 these pumps does not provide positive information on bearing condition or degradation. For example, the bearings on the Essential Service Water pumps (OSX02PA, OSX02PD) and Diesel Oil Transfer Pumps (lDOOlPA thru D and 2000lPA thru D) are cooled by the pumped fluid. l l l^ (0091D/0034D) 3.5 page 19 of 22
R' v . 8 e e DRAFT REVISION OF RELIEF REQUEST NO. PR-2 Therefore, any heat generated by degraded bearl.gs is carried away by the cooling fluid and would not be directly measured at the bearing housing.
- b. Even those cases where bearing temperature monitoring equipment is available, bearing temperature measurements will not provide significant additional information regarding bearing condition other than that already obtained by measuring vibration. Measurement of vibration provides more concise and consistent information with respect to pump and bearing condition. The usage of vibration
! . measurements'can provide information as to a change in the balance of rotating parts, misalignment of bearings, worn bearings, changes in internal hydraulic forces and general pump integrity prior to the condition degrading to the point where the component is jeopardized. Dearing temperature does not always predict such problems.
- c. An increase in bearing temperature most often does not occur until the bearing has deteriorated to a point where additional pump damage may.
occur. Bearing temperatures are also affected by the temperature of the medium being pumped, thus the hydraulle and vibration readings are-more consistent.
- 6. ALIEEtIATE TESTIci: Quarterly measurement of hydraulic parameters and vibration readings provide a more positive method of monitoring pump condition and bearing degradation.
(0091D/0034D) 3.5 page 20 of 22
l ' Ray. 8' e e DRAFT REVISION OF RELIEF REQUEST NO. PR-2
- 7. JUSIlfEATION: Dy measuring pump hydraulic parameters and vibration velocity, (as described in PR-1), pump operability and the trending of mechanical degradation is assured. Also, since these parameters (i.e., hydraulic parameters and vibration) are m Sasured quarterly, the pump mechanical condition will-be more accurately determine 1 than would be possible by measuring bearing temperature on a yearly basis.
- 8. AEELLCADLE. TIME PERIQD1 This relief is requested once per year, during the 4
first inspection interval.
~
- 9. APPROVAL ETA 1USt This tellef is a proposed change to the approved PR-2 and is HDT approved for use. Formal written approval from the NRC is required p1191 to use. Expedited review and approval is requested.
i i 1 (0001D/0034D) 3.5 page 21 of 22
Rev. 8
-*1 e J e
l:. DRATT RELIET l-l REQUEST NO. PR-7 'l l l l
- 1. PtfMP ' NUMBER t ' OSX02PA, B pumps 2.' t{ UMBER OF ITEMS t. 2 pumps.
4 L g 3._ ASME CODE CLASSt 2&3 4.- ASME_ CODE. SECTION_XI REQU.lEEMEN.TS t ANSI /ASME OMb-1989,.Part 6, Table 3 and - Table 73a' states that the acceptable performance range.for all components will be'12.5- ' .i
- times; the: Reference Valve, not'to exceed .325. inches per second. The alert range, at .
which. time the testing' frequency would be doubled, will be.>2.5 to 6 times:the i Reference Valve, ' not to' exceed '.70 inches per second. Any vibrating velocity greater:
- than 6 times the Reference Valvel or greater l than .70 inches per second will require
. corrective' actions.
1 I 5 l5. RASIS FOR RELIEFt. ' Per NRC SER dated 9/15/90 more'information'is needed.on this
.w Issue. Therefore:this Relief-Request'will be revised and resubmitted prior-to-3/15/91.
si il 1
-(0091D/0034D) 3.5 page 22 of 22 n. '+..}}