ML23283A024
| ML23283A024 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 10/09/2023 |
| From: | DTE Electric Company |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML23283A021 | List: |
| References | |
| NRC-23-0063 | |
| Download: ML23283A024 (6) | |
Text
Total Page Count (6 pages)
FERMI 2 INSERVICE TESTING PROGRAM FOR PUMPS AND VALVES FERMI 2 FOURTH 10 YEAR INTERVAL - START DATE 02/17/2020 PART 2: 1ST Pump Testing Program (Revision 3)
Revision Summary: Revised per LCR 19-036-ISI to support the 1ST Program 4th Interval Update.
Due to the extensive changes, no revision bars are used.
Prepared: ~O-A,...l...~v.l'.J.1. Datc:2.-<Z.-u, IST rogram M'-ager OUAL PE-03 ~
Date:
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Reviewed:
(TMIS~/ ~tJtJt.;/) Date:
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Supervisor, Performance Engineering Approved: ___
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NIA ngmeermg INFORMATION AND PROCEDURES Rev:
3 Date:
DSN: IST Pump Testing Program DTC: TMPLAN File:
1715.04 Recipient: _____ _
Date Approved: ______ _
Release authorized by: ________ _
IST PROGRAM PLAN PART 2 Page 1 2/17/2020
1.0 INSERVICE TESTING PLAN FOR PUMPS 1.1 Pump Inservice Testing Plan Description This testing program for pumps meets the requirements of the ASME OM Code 2012 Edition, Section ISTB "Inservice Testing of Pumps in Light-Water Reactor Nuclear Power Plants" and Mandatory Appendix V "Pump Periodic Verification Test Program".
Where determined necessary, Relief Requests were submitted to the NRC. NRC approvals of these relief requests are documented in IST Program Plan Prut 7.
1.2 Pump Plan Table Description The pumps included in the Fermi 2 IST Program scope are listed in Part 3 (IST Pump Scope table) of the IST Program Plan. The information contained within this table identifies those pumps which ru*e to be tested to the requirements of Subsection ISTB of the ASME OM Code 2012 Edition, the testing parameters and frequencies, and any associated relief requests. The key headings for the pump tables are delineated below.
Pump PIS:
Function:
Drawing:
Class:
Group:
~
Variable:
Actual Speed:
The pumps unique plant identification number.
The descriptive name of the pump The associated piping and instrumentation drawing number.
The ASME classification of the component.
The pump category as defined in ISTB-2000 Cat A Continuous or routinely operated pumps Cat B Standby pumps not operated routinely Identifies the style of pump - centrifugal or positive displacement Identifies if the pump speed is fixed or variable.
Identifies the pump speed.
IST PROGRAM PLAN PART 2 Page2
1.2 Pump Plan Table Description (continued)
Test Requirement:
The test designators are as follows:
Frequency:
Procedures:
Notes:
Parameter Fe1mi Fenni Pump Surveillance Table Code Code Differential DP dP Pressure Speed SPEED N
Discharge DISPR p
Pressure Inlet (suction)
INLPR NIA tLJ Pressure Flow Rate FLOW Q
Vibration OVV(xx)
V Static Inlet INLPS NIA tL)
Pressure (I)
Motor Running AMPS NIA tLJ Current (I)
Note 1: These parameters are not required IST parameters but are recorded as additional information for component health monitoring in the Surveillances.
Note 2: These parameters are recorded in the surveillance but not needed for trending in the Iddeal database.
The frequency of testing each pump. The following test designators are used:
OP (Q) 2Y Once every 92 days (Quarterly)
Once every two years (Biemtlal)
Note: The Iddeal Software uses the code Q for quarterly tests.
Lists the surveillance procedure numbers used for pump testing Lists any approved relief requests applicable to the pump.
1ST PROGRAM PLAN PART 2 Page 3
1.3 Measurement of Test Quantities Speed Per ASME OM Code ISTB-3530, rotational speed measurement of variable speed pumps shall be taken by a method which meets the requirements of paragraph ISTB-3510. Speed measurements must be accurate to within+/- 2% per table ISTB-3510-1.
Differential Pressure Differential pressure will be calculated from inlet and discharge pressure measurements or by direct differential pressure measurement.
Pressure Flow Rate Vibration Pump suction and/or discharge pressure must be measured to within the accuracy requirements of Table ISTB-3 510-1.
Flow rate will be measured using a rate or quantity meter installed in the pump test circuit. Flow measurements must be accurate to
+/-2% per table ISTB-3510-1.
Pump vibration will be measured with a digital vibration meter in accordance with the applicable section of ASME OM Code ISTB-3540. Vibration measurements must be accurate to+/- 5% of full scale per table ISTB-3510-1.
1.4 Allowable Ranges of Test Quantities The applicable allowable ranges specified in ASME OM Code ISTB-5100 will be used for differential pressure, flow and vibration measurements for a Comprehensive Pump Test. ISTB-5000 allows a Comprehensive Pump Test to be perfmmed in lieu of Group A or B Pump Tests. Fe1mi may elect to set more restrictive ranges as deemed necessary.
Should a measured test quantity fall outside the allowable range, con*ective action per ASME OM Code ISTB-6200 shall be followed and records maintained in accordance with ASME OM Code ISTB-9000.
IST PROGRAM PLAN PART 2 Page4
1.5 Instrument Accuracy Allowable instrument accuracies are provided in ASME OM Code ISTB Table ISTB-3 510-1. If the accuracies of the station's pe1manently installed instruments do not meet the requirements of this table/section, temporary instruments meeting those requirements will be used or approved relief shall be in place.
1.6 Reference Values Reference values will be established and maintained following the ASME OM Code Sections ISTB-3300 and ISTB-5100 for a Comprehensive Pump Test. ISTB-5000 allows a Comprehensive Pump Test to be perfmmed in lieu of Group A or B Pump Tests. Fermi may elect to set more restrictive ranges as deemed necessary.
ASME OM Code ISTB requires that reference conditions be established ptior to data collection. Maintaining a reference value over the life of the component is essential for identification of trends in the variable data. Changing the reference value at which testing is perfonned will only be done when absolutely necessary. Any previously noted degree of lifetime degradation shall be applied conservatively when dete1mining new acceptance criteria for a changed reference. It is possible for pumps to experience a drop in performance over a short timeframe following replacement or major rework. This is caused by initial wear-in when the tolerances between the impeller(s) and the casing or the wear rings are extremely small. These tolerances "open up" slightly due to high flow velocity during the first several runs of the equipment. If a pump exhibits this short term (first 4 - 5 exams) apparent degradation followed by stable pe1formance over the next 5 -
10 tests it is acceptable to re-establish a new baseline value.
The following is an excerpt from the Summary of Public Workshops Held in NRC Regions on Inspection Procedure 73756, "Inservice Testing of Pumps and Valves," And Answers to Panel Questions on Inservice Testing Issues report issued July 18, 1997.
113.6.3 Following pump replacement or major maintenance which could affect pump perf01mance, why is the first test data required to be used as the basis for new reference values? With nonstandby pumps ( e.g., service water, component cooling) there is no allowance given for break-in or run-in time during which hydraulic parameters can 11settle in.
Part 6, Paragraph 4.4, requires a new reference value(s) be determined or the previous set reconfirmed by an inservice test run prior to declaring the pump operable. Licensees may allow the pumps to settle in before ta1dng data, and then declare the pumps operable. Licensees may also run a series of tests to confirm repeatability prior to declaring a pump operable. The requirements of Paragraph 4.3, which state that the reference values shall be determined from the results of the preservice tests or the first inservice test, would not apply if the reference values were affected by repair, replacement, or maintenance. Paragraph 4.4 applies."
1ST PROGRAM PLAN PART 2 Page5
- 1. 7 Applicable Code Cases OMN-16 Revision 1 allows a pump curve methodology to be used in lieu of a fixed refel'ence point. This methodology is currently used for the Core Spray Pumps, EECW Pumps, and RHR Pumps. Code case OMN-9 and OMN-16 (Revision 1) is conditionally approved through the 2012 edition of the ASME OM Code and Regulatory Guide 1.192 (Revision 1 ).
1.8 Mandatory Appendix V Mandatory Appendix V establishes the requirements for implementing a pump periodic verification test. This Mandatory Appendix is required per ISTB-1400. The intent of the pump periodic verification test is to confirm that an applicable pump can meet the required differential pressure or discharge pressure at its highest design basis accident flow rate.
OM Code Appendix V Paragraph V-3000(a) Requirement: The Owner shall (a) identify those ce1iain applicable pumps with specific design basis accident flow rates in the Owner's credited safety analysis (e.g., technical specifications, technical requirements program, or updated safety analysis report) for inclusion in this program. Scoping and compliance requirements for Mandatory Appendix V are listed in the pump basis documentation.
IST PROGRAM PLAN PART 2 Page6