ML20054A951
| ML20054A951 | |
| Person / Time | |
|---|---|
| Site: | Byron, 05000000 |
| Issue date: | 04/07/1982 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20054A946 | List: |
| References | |
| PROC-820407, NUDOCS 8204160240 | |
| Download: ML20054A951 (17) | |
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BYRON NUCLEAR POWER STATION UNIT I PRESERVICE TESTING (PSI)
Program Plan for Pumps l
8204160240 820407 PDR ADOCK 05000454 E PDR
e Table of Contents 2.agg 1.0 Pre-Service Testing Program for Pumps 1.1 Program Description 3 1.2 Tables for Pre-Service Pump Testing Program 4 1.3 Relief Requests and Allowable Ranges of Test Quantities. 10 t
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1.1 - Byron Unit 1 Pump Pre-Service Inspection Program Plan.
The Pump Pre-Service inpsection (PSI) program for Byron Nuclear Power Plant Unit 1, is implemented in accordance with the require-ments of subsection IWP of section XI of the ASME Boiler and Pressure Vessel Code,1977 edition, through the summer of 1978 addenda. Where these rules are determined to be impractical, specific relief is requested and is referenced in the tables.
Pumps which are identified in the Byron Station FSAR as Category 1 pumps, which are active and have an emergency power source, are the pumps subject to PSI /ISI testing. Active pumps are defined as those pumps which are called on to perform a safety function as well as to accomplish and maintain a safe reactor shutdown.
The only exception to this is diesel driven auxiliary feedwater pump, (IAF01PB) which is included in the program although it is not supplied by an emergency power source.
Lubrication level will be observed through sight glasses for the pumps licted in the PSI /ISI programs, except diesel oil transfer pumps (ID00lPA,1D00lPB) which are lubricated by the pumped fluid.
Also the speed will not be measured for pumps operating at nom-inal motor nameplate speed for constant speed drives, but it will be measured through tachometers for variable speed drives, (i.e.,
Diesel) such as Essential Service Water Makeup pumps (OSX02PA, OSX02PB).
Reference values shall be determined from the results of an inservice 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 oper-ation readily duplicated during subsequent inservice testing.
SECTION 1.2 TABLES FOR PRE-SERVICE PLMP TESTING FROGRAM BYRON UNIT 1 l
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i The pre-service test quantities shown below will be measured or observed in accordance with IWP-3100 of ASME Section XI '77 edition, summer '78 addenda:
- 1. Speed (if variable speed)
- 2. Inlet pressure
- 3. Differential pressure
- 4. Flow rate
- 5. Vibration
( 6. Bearing temperature l
- 7. Lubrication level l
l e Wherever these quantities will not be measured or observed, the relief l :
request number pertaining to the item is given on the program summay tables.
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The following information is included in the summary tables:
The first four columns include the unique Byron Station Equipment Piece Number, the code class, and the P & ID on which the pumps are located, including the x-y coordinates which specifically locate the pumps on the P & ID.
Speed: The speed will not be measured for the pump operating at nominal motor nameplate speed for constant speed drives, but it will be measured through the tachometer for variable speed drives.
Inlet pressure: Inlet pressure will be measured via permanently installed gauges or through readings taken from pressure taps provided for using temporarily installed calibrated gauges.
Differential pressure: Dif ferential pressures will be measured using calibrated dif ferential pressure gauges, or by recording the dif ference between calibrated inlet and outlet pressure gauges.
Flow rate: Flow rates will be measured using permanently installed instru-mentation.
Vibration: Vibration measurement shall be made using hand held instruments.
Bearing Temperature: Bearing temperature will be measured by permanently installed devices or thermocouples where such devices are present. Similar temporary measurement devices will be used where temperature wells are pro-vided.
Lubrication Level: Lubrication level will be observed through sight glasses f or the pumps listed in the PSI /ISI programs, except diesel oil transfer pumps (ID00lPA, ID00lPB) which are lubricated by the pumped fluid.
PRESERVICE TESTINC PROGRAM PLAN UNIT-1 CLASS 1, 2, & 3 PUMP BYRON NUCLEAR POWER STATION REVISION - DATE PACE O 1-25-82 1 of 3 TEST PARAMETERS LUBRI-P & ID AND INLET DIFF FLOW BEARING TEST CATION PUMP NINBER PLMP NAME COORDINATES SPEED PRES PRES RATE VIBRATION TEMP INTERVAL LEVEL REMARKS OAB03P Boric acid transfer 3 M-65-5 No Yes Yes Yes PR-1 PR-2 Yes pump 1AB03P Boric acid transfer 3 M-65-5 No Ye s Yes Yes PR-1 PR-2 Yes Pump 1AF0lPA Auxiliary feedwater 2 M-37 No Yes Yes Yes PR-1 Yes Yes Pump 1AF0lPB Auxiliary feedwater 2 M-37 Yes Ye s Yes Yes PR-1 Yes Yes pump (Diesel)
OCC0lP Component cooling 3 M-66-3 No Yes Yes Yes PR-1 Yes Yes Pump ICC0lPA Component cooling 3 M-66-3 No Yes Yes Yes PR-1 Yes Yes Pump ICC0lPB Component cooling 3 M-66-3 No Yes Yes Yes PR-1 Yes Yes Pump ICS0lPA Containment spray 2 M-46 No Yes Yes Yes PR-1 Yes Yes Pump ICS0lPB Containment spray 2 M-46 No Yes Yes Yes PR-1 Yes Yes Pump ICV 0lPA Centrifugal charging 2 M-64-3 No Yes Yes Yes PR-1 Yes Yes Pump ICV 0lPB Centrifugal charging 2 M-64-3 No Yes Yes Yes PR-1 Yes Yes Pump
PRESERVICE TESTING PR0 GRAM PLAN UNIT-1 CLASS 1, 2, & 3 PUMP BYRON NUCLEAR POWER STATION REVISION - DATE PAGE O l-25-82 2 of 3 TEST PARAMETERS LUBRI-P & ID AND INLET DIFF FLOW BEARING TEST CATION PUMP NUMBER PUMP NAME COORDINATES SPEED PRES PRES RATE VIBRATION TEMP INTERVAL LEVEL REMARKS 1RH0lPA Residual heat 2 M-62 No Yes Yes Yes PR-1 PR-2 Yes removal pump 1RH0lPB Residual heat 2 M-62 No Yes Yes Yes PR-1 PR-2 Yes removal pump l ISI0lPA Safety injection 2 M-61-1 No Yes Yes Yes PR-1 Yes Yes l PmP ISI0lPB Safety injection 2 M-61-1 No Yes Yes Yes PR-1 Yes Yes pump ISX0lPA Essential service 3 M-42-1 No Yes Yes Yes PR-1 Yes Yes water pump ISX0lPB Essential service 3 M-42-1 No Yes Yes Yes PR-1 Yes Yes water pump OSX02PA Essential service 3 M-42-6 Yes PR-3 Yes Yes PR-1 PR-2 Yes water makeup pump (Diesel)
OSX02PB Essential service 3 M-42-6 Yes PR-3 Yes Yes PR-1 PR-2 Yes water makeup pump (Diesel)
ID00lPA Diesel Oil Transfer 3 M-50-1 No Yes Yes Yes PR-1 PR-2 do j Pump j ID00lPB Diesel Oil Transfer 3 M-50-1 No Yes Yes Yes PR-1 PR-2 No Pump ID00lPC Diesel Oil Transfer 3 M-50-1 No Yes 'Yes Yes PR-1 PR-2 No Pump ID00lPD Diesel Oil Transfer 3 M-50-1 No Yes Yes Yes PR-1 PR-2 No Pump t
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. i PRESERVICE TESTINC PR0 CRAM PLAN UNIT-1 CU.SS 1, 2, & 3 PUMP BYRON NUCLEAR POWER STATION REVISION - DATE PAGE
O 1-25-82 3 of 3 TEST PARAMETERS LUBRI-P & ID AND INLET DIFF FLOW BEARING TEST CATION PLMi> N!MBER PINP NAME COORDINATES SPEED PRES PRES RATE VIBRATION TEMP IfGERVAL LEVEL REMARKS QW001PA ' '. Control Room 3 M-118-1 No Yes Yes Ye s PR-1 PR-2 Yes m illed Wter OWOO1PB Control Room 3 M-118-1 No Yes Yes Yes PR-1 PR-2 Yes milled Wter l
a SECTION 1.3 RELIEF REQUESTS FOR PRE-SERVICE PUMP TESTING PROGRAM i
RELIEF REQUEST NO. PR-1 i 1. PUMP NUMBER: All pumps in program plan.
- 2. NUMBER OF ITEMS: 23 pumps.
l 3. ASME CODE CLASS: 2&3 l
I 4. ASME CODE, SECTION XI: (Detection of mechanical change per IWP-1700 l
l and table 2WP-1700 3100-2) .
I The requirements for which relief is being requested are the measurement and allowable ranges of vibration in mils dis-placement.
- 5. BASIS FOR RELIEF: Pump vibration is required to be measured to detect any changes in the mechanical characteristic of a pump.
This is to detect developing problems so repairs can be initiated prior to a pump becoming inoperable (i.e. , unable to perform its function).
- 6. ALTERNATE TESTING: The ASME Code minimem standards require measure-j ment of the vibration amplitude in mils, (displacement),
i Byron Station proposes an alternate program of measuring i
vibration velocity (inches per second) which is more com-prehensive than that required by section XI. This technique is an industry-accepted method which is much more meaningful and sensitive to small changes that are indicative of devel-oping mechanical problems. These velocity measurements detect not only high amplitude vibrations that indicate a major mechanical problem but also the equally harmful low amplitude high frequency due to misalignment, imbalance, or bearing wear that usually go undetected by simple displace-ments.
The " General Machinery Vibration Severity Chart" published by IRD Mechanalysis, Inc. , (see attached) will be used as an alternate to the " Allowable Ranges of Test Quantities" in ASME table IWP-3100-2 for vibration. The " Alert Range" will be .314 in/sec <('.628in/sec. The required action range will be V g .628 in/sec. Evaluation of data, to assign equipment to the alert or action ranges, will be done within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> (per IWP-3220 of Section XI). This will be done using industry accepted vibration analysis equipment, such as a full spectrum analyzer.
1 GENERAL MACHINERY VIBRATION SEVERITY CHART For vs. es a GUIDE in indeing vibestion es e warning of ia' pend.ng trouble.
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Columbus, Ohio
- 7. JUSTIFICATION: Measurements of vibration in mils displacement are not sensitive to small changes that are indicative of developing mechanical problems. Therefore, the proposed alternate of measuring vibration amplitude provides added assurance of the continued operability of the pumps.
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RELIEF REQUEST NO. PR-2
- 1. PUMP NUMBER: 0AB03P, IAB03P, 1RH01PA, IRH01PB, OSX02PA, OSX02PB, ID001PA, ID001PB, 0W001PA, 0 WOO 1PB
- 2. NUMBER OF ITEMS: 10 pumps
- 3. ASME CODE CLASS: 2&3
- 4. ASME CODE, SECTION XI REQUIREMENTS: (Detection of mechanical change per IWP-1700)
Pump bearing temperatures are required to be measured to detect any changes in the mechanical character-istics of the pumps' bearings. IWP-3500(b) requires three successive readings taken at ten minute intervals that do not vary more than 3%.
- 5. BASIS FOR RELIEF:
- 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 requires that the bearings in question be seriously degraded.
- c. Measurement of housing temperature on many of these pumps does not provide information on bearing condition or degra-dation. For example, Essential Service Water pumps (0SX02PA, OSX02PB) and Diesel Oil Transfer Pumps (ID001PA, ID001PB, ID001PC, ID001PD) are cooled by pumped fluid and Residual Heat Removal Pumps (IRH01PA, IRH01PB) are cooled by external cooling systems.
i Therefore, any heat generated by degraded bearings is carried away by the cooling fluid and would not be directly measured at the bearing housing. l
- 6. ALTERNATE TESTING: No direct alternate test is proposed for bearing temperatures. However, measurement of hydraulic parameters and vibration readings do provide a more positive method of monitoring pump condition and bearing degradation.
- 7. JUSTIFICATION: By measuring pump hydraulic parameters and vibration velocity, (as described in PR-1), pump operability, and trending of mechanical degradation is assured. Also, since these parameters (i.e., Hydraulic parameters and vibration) are measured monthly, the pump mechanical condition will be more accurately determined than would be possible by measuring bearing temperature on a yearly basis.
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F RELIEF REQUEST NO. PR-3
- 1. PUMP NUMBER: OSX02PA, OSX02PB
- 2. NUMBER OF ITEMS: 2 pumps
- 3. ASME CODE CLASS: 3
- 4. ASME CODE, SECTION XI REQUIREMENT: (IWP-3100 measurement of inlet pressure per table IWP-3100-1) .
- 5. BASIS FOR RELIEF: It is impractical to measure the inlet pressures of these pumps. Instrumentation for directly measuring the inlet pressure for these pumps does not exist. These pumps take a suction from the river.
- 6. ALTERNATE TESTING: These pumps will be evaluated using pump discharge pressure. Additionally, delta level across the traveling screens will be measured to assure adequate suction level.
There is dif ferential level instrumentation provided, which indicates the difference in level between the river height and the reservoir height in inches. This delta level will be recorded in lieu of inlet pressure for the pumps.
- 7. JUSTIFICATION: The level of plant safety is not affected by not tak-ing suction pressure data on vertical well type pumps.
These pumps cannot suf fer from cavitation as long as their impellers are submersed in the pumped fluid reservoir.
Recording the delta level across the traveling screens ensures that the pumps will be submersed in the river since no other possible obstructions between the river and pump bays exist.
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