ML20024D195
| ML20024D195 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 07/29/1983 |
| From: | DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML20024D188 | List: |
| References | |
| PROC-830729, NUDOCS 8308030287 | |
| Download: ML20024D195 (18) | |
Text
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DUKE POWER COMPANY McGUIRE NUCLEAR STATION l
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' PUMP AND VALVE INSERVICE TESTING UNIT 1 REVISION #5 l
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DUKE POWER COMPANY MCGUIRE NUCLEAR STATION
, PUMP INSERVICE TESTING PROGRAM ASME SECTION XI, SUBSECTION IWP The inservice testing of ASME Code Class 1, 2, and 3 pumps provided with an emergency power source will be tested as required by Section XI, Subsection IWP, of the ASME Boiler and Pressure Vessel Code 1980 Edition, except where
, specific written relief has been granted by the Commission. A description of the proposed inservice testing program, as well as specific requests for relief from code requirements determined to be impractical, is described by the following.
4 I. The following are specific requests for relief from certain code requirements.
A) IWP-4120 requires the full scale range of each instrument to be three times the reference value or less. This was changed from four times the reference value in the edition of Section XI that was in effect prior to unit licensing. 10CFR, Section 50.55a(s)(4) states that design provisions are excluded from the requirement to upgrade to subsequent editions of Section XI. Since any cases where the three-times reference value criterion is not met would require design changes in instrumentation, we will continue to apply the four-times reference value criterion, as interpreted in B) below, for instrument accuracy evaluation.
B) In several cases, instrumentation does not meet the four times 8 reference value criterion. These cases predominantly involve suction pressure gauges where a larger range is required to accommodate varying conditions at the suction of the pump. In all cases where the four-times reference value criterion cannot be met, an instrument error evaluation is performed to demonstrate that the overall accurac/ of the differential pressure measurement is within the limits established by IWP. These cases are RHR discharge, nuclear service water suction, and control room chilled water suction gages.
c) Table IWP-3100-1 establishes the parameters that are to be measured. The previous edition of Section 11 specified that in a fixed resistance system, either .4P or Q was to be measured, not 4l both. Thecentrifugalchargingpumpsaretestedusingfixedresistancel flow paths, with no flow indication provided. Based on the design 5l change exclusion provided by 10CFR50.55a(g)(4), we will continue to l apply the criterion that it is not required to measure flow in a fixed resistance system. The Residual Heat Removal Pu=ps are in a fixed resistance system that does have a flow gauge available. There is no way to adjust flow in the system and the gauge is not suffi-5 ciently accurate at low flows to provide a precise indication of flow. For these pumps, a flow will be recorded but will not be used for comparison to cny reference values.
D) Table IWP-4110-1 states that vibration measurement should have an 4 accuracy of i 5%. McGuire has no permanently installed vibration instrumentation. The portable instruments used to measure vibration have an uncertainty of i 11%.
McGUIRE - UNIT 1 I.1-1 .
Revision 5
II. The following Safety Class 1, 2, and 3 pumps (See Attachment #1 for specific safety class and available instrumentation) will be tested in accordance with the intent of Subsection IWP of the ASME code:
NUCLEAR SERVICE WATER PUMPS (IA, IB)
CONTAINMENT SPRAY PUMPS (IA, IB)
SAFETY INJECTION PUMPS (IA, IB)
MOTOR-DRIVEN AUX. FEEDWATER PUMPS (IA, IB)
TURBINE-DRIVEN AUX. FEEDWATER PUMP (NO. 1)
C2NTRIFUGAL CHARGING PUMPS (IA, IB)
COMPONENT COOLING PUMPS (IA1, IA2, IB1, IB2)
RESIDUAL HEAT REMOVAL PUMPS (IA, IB)
III. The following Safety Class 1, 2, and 3 pumps (See Attachment #1 for specific safety class and available instrumentation) will be tested in accordance with the intent of Subsection IWP, except for the request for relief for the specific requirements determined to be impractical as described below.
A) PUMP: CONTROL AREA CHILLED WATER PUMPS (CRA-P-1, CRA-P-2)
SAFETY CLASS: 3 FUNCTION: To provide chilled water to air handling units supplying control area air conditioning TEST REQUIREMENTS: 1 Measure pump bearing temperature during inservice testing.
- 2. Annually run pumps until bearing temperatures stabilize.
BASIS FOR RELIEF: There is no instrumentation installed to measure bearing temperature, and no meaningful data can be
( obtained from bearing housing surface temperature
! measurements.
l ALTERNATE TESTING: The inservice testing of the Control Area Chilled Water Pumps will be in accordance with the intent l of Subsection IWP except that bearing temperature I will not be monitored and subsequently the pumps will not be run annually until bearing temperature 4 stabilizes.
IV. The following Safety Class 1, 2, and 3 pumps are provided with insufficient instrumentation to perform any meaningful testing in l
accordance with the intent of Subsection IWP and therefore the following i alternate testing methods, as well as requests for relief from compliance with Subsection IWP, are described by the following.
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McGUIRE - UNIT 1 I.1-2 Revision 4 I
A) ~ PUMP: D/G FUEL OIL TRANSFER PUMPS (IA, IB)
SAFETY CLASS: 3 FUNCTION: Diesel generator auxiliary support TEST REQUIREMENT: Test pumps in accordance with Subsection IWP BASIS FOR RELIEF: Pumps contain insufficient instrumentation (See
' Attachment #1) to perform any meaningful testing in accordance with the intent of Subsection IWP.
ALTERNATE TESTING: Monthly Diesel Generator starting and loading as
' required by McGuire Technical Specifications is sufficient in assessing the hydraulic condition of the subject auxiliary pumps and demonstrating the capability of the individual components to l perform their design function.
The mechanical condition of the subject pumps will be determined from vibration data to be 5l gathered quarterly. Flow will be monitored by I observing level rise in the day tank.
, B) PUMP: D/G ROOM SUMP PUMPS (IA2, IA3, 1B2, IB3)
, SAFETY CLASS: 3 FUNCTION: Water removal from Diesel Generator rooms TEST REQUIREMENT: Test pumps in accordance with Subsection IWP BASIS FOR RELIEF: Pumps contain insufficient instrumentttion (See Attachment #1) to perform any meaningful testing in accordance with Subsection IWP.
ALTERNATE TESTING: Due to the anticipated infrequent normal operation of these pumps, quarterly, each pump will be verified to be capable of performing their design function of removing water from the sump at a rate greater than or equal to 419 gpm.
The time which it takes to pump a known volume 4 from the sump is recorded and converted to a flow rate.
l McGUIRE - UNIT 1 I.1-3 Revision 5
V. The Standby Makeup Pump is not safety related and does not receive emergency power. It is required to be tested by McGuire Technical Specifications.
Therefore, the request for relief and alternate testing method is described below.
PUMP: Standby Makeup Pump (1)
SAFETY CLASS: N/A TEST REQUIREMENT: Test pump in accordance with~IWP (Technical Specification requirement)
BASIS FOR RELIEF: Pump contains insufficient instrumentation (see Attachment #1) to perform any meaningful testing in accordance with Subsection IWP.
ALTERNATE TESTING: Pump will be verified to be capable of performing its design function on a quarterly basis by verifying that with pump in operation in a test loop that design flowrate can be achieved.
The mechanical condition of the pump will be determined from vibration data to be gathered quarterly.
9 McGUIRE - UNIT 1 1.1-3a Revision 5 New Page
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SAFETY RELATED CLASS 1, 3 PUMPS PROVIDED WITH AN o". ,
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- 5 # # E E E 3 # E S Nuclear Service Water Pumps (IA, IB) (RN) 3 QU NR X X X X(1) X X X MC-1574-1.1 i Containment Spray Pumps (IA, IB) (NS) 2 QU NR X X X X(1) X(3) X(2) X MC-1563-1.1 !
4 j 4 l Residual Neat Removal Pumps (IA, IB) (ND) 2 QU NR X X X X(1) X(3) X(2) X HC-1561-1.0 l Safety Injection Pumps (IA, IB) (NI) 2 QU NR X X X X(1) X X X MC-1562-3.0 l M/D Aux. Feedwater Pumps (1A, IB) (CA) 3 MO NR X X X X(1) X X X MC-1592-1.1 I T/D Aux. Feedwater Pump (No. 1) (CA) 3 MO X X X X X(1) X X X MC-1592-1.1 i
Cent. Charging Pumps (IA, IB) (NV) 2 QU NR X X NR X(1) X X X MC-1554-3.1 i
Component Cooling Pumps (IA1, IA2, IB1, 1B2)(KC] 3 QU NR X X X X(1) X X X MC-1573-1.0 4 l Control Area Chilled Water Pumps (CRA-P-1,2)(YC] 3 QU NR X X X X(1) X X(4) X MC-1618-1.0 l D/G Fuel Oil Transfer Pumps (IA, IB) (FD) 3 QU NR - -
X X(1) - -
X MC-1609-3.0 D/G Room Sump Pumps (IA2, IA3, 1B2, IB3)(WN) 3 QU NR - - - - - -
X MC-1609-7.0 ,
j 5 Standby Makeup Pump (1)(NV) NS QU NR - -
X X(1) - - -
MC-1554-1.3 NOTES i 4l 1. Vibration to be measured with portable instrumentation (Accuracy + 11%). l
- 2. Pump contains no bearings, but is close coupled, therefore motor bearing will be monitored.
- 3. Pump is close coupled, therefore motor lubricant level will be observed.
4l 4. No instrumentation is installed to measure bearing temperature.
LEGEND j X - Instrumentation MO - Monthly QU - Quarterly
- - Instrumentation not available NR - Not required for IWP Compliance ( ) - Note 5 lNS-NonSafetyRelated I.1-4 McGUIRE - UNIT 1 Revision 5 i
i
d DEFINITIONS OF TESTING REQUIREMENTS AND ALTERNATIVES Cold Shutdown (CS) Testing will be performed when the unit is in a cold shutdown (Mode 5) whose planned length is of sufficient duration to establish necessary test conditions and to perform the test. In the
' case of frequent shutdowns, the testing will not be performed more than one per three (3) months.
Testing will commence as soon as the cold shut-down condition is achieved but not later than I 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after shutdown, and continue until 4 complete or the plant is ready to return to power. Completion of all valve testing is not a prerequisite to return to power. Any testing
. not completed at one cold shutdown will be per-formed during any subsequent cold shutdowns that may occur before refueling to meet the code-specified testing frequency.
. Cycle and Time (CT) Valve will be tested to verify that its stret.e time is less than the maximum allowable stroke time specified by McGuire Nuclear Station.
- i. Leak Test (LT) Valve will be tested to verify that the seat leakage is limited to a specific maximum amount.
Movement Test (MT) Valve will be tested to verify that the valve is operable and/or the valve moves to the position 1 required to fulfill its purpose. No timing is involved.
Quarterly (Q) Testing will be performed at least once per three (3) months.
Refueling Outage (RF) Testing will be performed when the unit is shut down for refueling (Mode 6). Safety valves will be tested periodically per the testing schedule defined in ASME Subsection IWV-3510.
Refueling Outage (RF*) Valve will normally be tested during refueling outages, however, testing is not required more often than once per 24 months per Appendix J to 10CFR50.
Setpoint (SP) Valve will be tested to verify that it will
' ' relieve pressure at its specified setpoint.
McGUIRE - UNIT 1 II.3-1 Revision 4
GENERAL RELIEF 5l I. TEST REQUIREMENT: Perform trend analyses on category A and B valves as described in IW-3417(a) .
Ol BASIS FOR RELIEF: Trend analyses performed on rapid acting valves does not give reliable indication of valve stroke time deterioration.
TESTING ALTERNATIVE: Trend analyses will not be performed on valves that normally operate with cycle times of less than 5 seconds. Maintenance will be initiated if valve time 4
exceeds max. limit.
II. TEST REQUIREMENT: Measure the full-stroke time for valves requiring cycle time test as defined in IW-3413.
BASIS FOR RELIEF: McGuire's Operator Aid Computer and Portable Valve Timers operate by measuring the time between limit switch operations, rather than from the initiation of the actuating signal. The only way to time the valve using the initiation signal is through some manual means, such as a stopwatch. It is felt that 5
more consistent and repeatable results can be obtained by automated timing of the valve from limit switch to limit switch.
TESTING ALTERNATIVE: Valves will normally be times from limit switch to limit switch. In cases where this is not practical, timing will be manually done from initiating signal.
III. TEST REQUIREMENT: Leak rate test Category A valves in accordance with IW-3420.
BASIS FOR RELIEF: McGuire Tech Specs require leak rate testing in accordance with 10CFR50 Appendix J. The Tech Specs establish the required acceptance criteria, which is more restrictive than that required by IW. In order to eliminate redundant paperwork, all valve leak rate testing will be conducted as per Appendix J.
TESTING ALTERNATIVE: Category A valves will be leak tested in accordance with 10CFR50 Appendix J.
O McGUIRE - UNIT 1 II.4-1 Revision 5
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- j. , MC-1554-1.2.
i MC-1554-1.3' MC-1554-2.0 MC-1554-3.0 MC-1554-3.1 1
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Valve Number Drawing Number A B C D Remarks INV-94A B MC-1554-1.1 J-13 X CT X 10 sec. max. cycle time INV-958 B MC-1554-1.1 H-13 X CT X 10 sec. max. cycle time 4 INV-12 B MC-1554-1.2 F-ll X MT 5 INV-21A A MC-1554-1.2 E-3 X CT X 60 sec. max, cycle time l 4 l INV-22 A MC-1554-1.2 C-3 X MT l
INV-457A B MC-1554-1.2 I-7 X CT Isolation time 515 sec.
INV-458A B HC-1554-1.2 J-7 X CT Isolation time 515 sec.
1NV-459A B MC-1554-1.2 K-7 X CT Isolation time 515 sec.
INV-7B B HC-1554-1.2 J-10 X CT X CS 10 sec. max. cycle time INV-1A A MC-1554-1.2 C-5 X CT X CS 10 sec. max. cycle time 4
INV-2A A MC-1554-1.2 D-5 X CT 10 sec. max. cycle time X CS i_
M RE - UNIT 1 II 9 Revi 5
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INV-1010 B MC-1554-1.3 F-14 X MT X, CS 1
l McCUIRE - UNIT 1 II 9-2a i i
- Revision S 4
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- l VALVE: INV-21A CATEGORY: B CLASS: A FUNCTION: Isolatas Pressurizer Auxiliary Spray TEST REQUIREMENT: Cycle and time every three months BASIS FOR RELIEF: Opening this valve could result in a reactor low i pressure trip ALTERNATE TESTING: Valve will be cycled and timed during e.ald shutdown. <
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McGUIRE - UNIT 1 II.9-6b Revision 5 i New Page
9 MC-1576-1.0 VALVES: IVP-1B, IVP-2A, IVP-3B, IVP-4A, IVP-6B, IVP-7A, IVP-8B, IVP-9A, IVP-10A, IVP-11B, IVP-12A, IVP-13B, IVP-15A, IVP-16B, IVP-17A, IVP-18B, IVP-19A, IVP-20B CATEGORY: A CLASS: B FUNCTION: Provide containment isolation.
TEST REQUIREMENT: Cycle and time valves every three months.
BASIS FOR RELIEF:
5 Technical Specification 3.6.1.9 places severe restrictions on the operational time and alignment permitted for this 4l system during normal operation. IVP-1, IVP-2, IVP-3, and l 5l IVP-4 may be opened for only 250 hours0.00289 days <br />0.0694 hours <br />4.133598e-4 weeks <br />9.5125e-5 months <br /> a year at power. l The rest of the VP valves may not be opened at all during 4 power operation.
ALTERNATE TESTING: Valves will be timed whenever the system is operated or
. 1 O whenever the valves are cycled, and the elapsed time since the previous test has been three months or greater.
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McGUIRE - UNIT 1 II.13-5 Revision 5
r-i SYSTEM: NUCLEAR SERVICE WATER FLOW DIAGRAM 3: MC-1574-1.0 MC-1574-1.1 MC-2574-1.1 i
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m $ % 0 g g Valve Category g 3 g U O $ $ $ Remarks Valve Number Drawing Number A B C D 1RN-279B C MC-1574-1.0 K-2 X CT 60 sec. max. cycle time IRN-64A C HC-1574-1.0 1-2 X CT X CS 60 sec. max. cycle time 4 1RN-63B C HC-1574-1.0 I-2 X CT X CS 60 sec. max. cycle time IRN-296A C HC-1574-1.0 I-1 X CT 60 sec. max. cycle time 5 l ORN-147A,C C MC-1574-1.0 H-2 X CT 60 sec. max. cycle time l C MC-1574-1.0 H-3 X CT 60 sec. max. cycle time l 5lORN-148A 1RN-297B C MC-1574-1.0 G-2 X CT 60 sec. max. cycle time 5lORN-283A,C C HC-1574-1.0 F-2 X CT 60 sec. max. cycle time l
C MC-1574-1.0 F-2 X CT 60 sec. max. cycle time 5lORN-284B l IRE - UNIT 1 Rv i5