ML20063K325
| ML20063K325 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 12/23/1993 |
| From: | Jordan J HOUSTON LIGHTING & POWER CO. |
| To: | |
| Shared Package | |
| ML20063K315 | List: |
| References | |
| 1PEP07-CH-0002, 1PEP7-CH-2, NUDOCS 9402280456 | |
| Download: ML20063K325 (68) | |
Text
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ATTACHMENT 1
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I PROCEDURE 1 PEP 07-CH-0002 v
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i liOUSTON LIGHTING AND POWER COMPANY SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION PLANT PROCEDURES MANUAL
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l DEPARTMENT PROCEDURE -
S AFETY-RELATED (O) 300 Ton Essential Chiller Dynass IPEP07-CH-0002 Modification Verification Test Rev.0 Page1 of 45 APPROVED:
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R/23h3 M/Z783 Fy[eds Ing'incering Manager IIate' Approved Date Effective PROCEDURE USE CONTROL: REFERENCE Table of Contents Pace
1.0 Purpose and Scope
3 2.0 Definitions 3
3.0 Responsibilities 4
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4.0 Prerequisites
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5.0 Precautions 6
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6.0 Procedure h
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7.0 Acceptance Criteria 22 Qg/A7 to ))'
s 8.0 References
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9.0 Support Documents 23 9.1 Addendum 1, A Train Essential Chilled Water Flow Balancing 24 9.2 Addendum 2, B Train Essential Chilled Water Flow Balancing 26 9.3 Addendum 3, C Train Essential Chilled Water Flow Balancing 28 k
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E 300 Ton Essential Chiller Dynass IPEP07-CH-0002 Modification Verification Test Rev.O Page 2 of 45 Table of Contents (Continued) pgge 9.4 Addendum 4, Psychrometric Chart 30 9.5 Addendum 5, Data Logger Setup
'31' 9.6 Data Package Cover Sheet (-1) 32 9.7 Test Verification Data Sheet (-2) 33 9.8 A Train CH Balancing Data Sheet (-3) 42 9.9 B Train CH Balancing Data Sheet (-4) 43 9.10 C Train CH Balancing Data Sheet (-5) 44 9.11 Chronological Test Log Data Sheet (-6) 45
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300 Ton Essential Chiller Bynass IPEP07-CH-0002 -
Modification Verification Test Rev.O Page 3 of 45
1.0 Purpose and Scope
1.1 This procedure gathers data to determine if the Essential Chilled Water System will function as required and specified by Modification 93049 during cold weather conditions. The testing configurations consist of 4 special lineups specified by Modification 93049 to simulate Chiller operation during cold-weather. The first test will simulate a single 300 Ton Idle Chiller Safety Injection Start during cold weather conditions. The second lineup will simulate a single 300 Ton Chiller Starting in LOOP cold weather conditions. The third will simulate two 300 Ton Chillers Operating in Steady State cold weather conditions. The fourth lineup will simulate a single 150 Ton Idle Chiller Safety Injection Start during cold weather conditions.
1.2 This procedure is applicable to the following equipmenti 1.2.1 Unit 1300 Ton Essential Chillers 3VillVCH004 AT 10' EL. MAB (Chiller 12A) 3Vil1VCH005 AT 10' EL. MAB (Chiller 12B) 3V11IVCH006 AT 10' EL. MAB (Chiller 12C)
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l.2.2 Unit 1 150 Ton Essential Chillers 3V111VCH001 AT 10' EL. MAB (Chiller ll A) 3V111VCH002 AT 10' EL. MAB (Chiller 11B) 3V111VCH003 AT 10' EL. MAB (Chiller 11C) 1.3 This procedure obtains various pressure, temperature, and amperage readings while operating the Essential Chillers with the specified simulated condition and configured for cold weather operation as specified by Modification 93049.
1.4 This procedure shall be performed in the sequence written unless otherwise f
specified.
1.5 Performance of this test requires the train of Essential Chilled Water being tested and associated 300 and 150 ton chillers be declared inoperable and the LCO action statements of 3.7.14 entered.
2.0 Definitions 2.1 DOUBLE ASTERISK ("): Denotes steps within this procedure that shall be independently verified on Data Sheet (-2).
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L 300 Ton Essential Chiller Dynass IPEP07-CII-0002 Modification Verification Test Rev.0
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Page 4 of 45 2.2 This procedure is written to allow testing in whichever trains are available at the time of the test. When equipment.or instrument numbers are specified, the A train will be first, B train next and C train will follow (Example: Essential Chiller 12A (12B)(12C)).
2.3 For cold weather operation the inoperable chiller ECW outlet bypass valve position was specified by Design Engineering as 5-10% open. From actual valve stroke a 7%% setting was determined for the 150 and 300 ton chillers which was % turn open in both cases.
3.0 Responsibilities 3.1 The Test Coordinator is responsible for:
3.1.1 Notifying other departments of the support requirements for this test.
l 3.1.2 Coordinating test sequence and support activities with Plant Operations.
3.1.3 Directing non-operations personnel performing test-related activities.
f 3.1.4 Coordinating evaluation and resolution of test deficiencies.
3.1.5 Notifying Plant Operations of test completion and test results.
3.1.6 Ensuring test package completeness, legibility, and accuracy before transmittal to RMS.
4.0 Prereaufsites 4.1 This procedure is applicable for Unit 1, in modes 5 and 6 only.
4.2 Open the Chronologicai Text Log, Data Sheet (-6) and maintain testing status through the completion of the test.
4.3 OBTAIN permission to start the test from the Shift Supervisor on Data Sheet (-1).
4.4 ENTER the Equipment Number (TagfrPNS) of the chillers to be tested on Data Package Cover Sheet (-1):
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300 Ton Essential Chiller Bypass IPEP07-Cil-0002 Modi 6 cation Verineation Test Rev.O Page 5 of 45 4.5 When a blank (__.) precedes a step, T11EN ENTER a check mark (4) in the blank when the step is completed. If a conditional step is not required, enter N/A in the blank. Enterjustification in the Chronological Test Log, on Data Sheet (-6), if the basis for use of N/A* is not apparent, or otherwise documented in the procedure.
4.6 Obtain the following test equipment and RECORD the Description, STPEGS 1.D. Number, and Calibration Duc Date in the M&TE RECORD on Data Sheet (-2), as applicable.
4.6.1 Two (2) pressure transmitters,0-50 Psia, accurate to 0.2% full scale, or equivalent.
4.6.2 One (1) pressure transmitter,0-50 Psig, accurate to 0.2% full scale, or equivalent.
4.6.3 Six (6) RTD's,32 - 100 *F, accurate to 0.2 *F, or equivalent.
4.6.4 Two (2) RTD 32-230*F, accurate to 0.2*F or equivalent.
4.6.5 Thl e (3) Differential Pressure gauges. 0-30" WC. accurate to 2% full scale, or equivalent.
1 (0-50" WC Differential Pressure gauges Inay be os substituted, if required) g 4.6.6 One (1) sling psychrometer, Bacharach model 12-7012, accurate to 2 "F, or equivalent.
NOTE Readi6p,s from parameters riionitored from the data logger will be transferred and stored in a laptop computer during the performance of the test.
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,3 4 0 {"n 4.6.7 One (1) Data Logger, Fluke Model 2280 or equivalent.
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4.6.80nc (1)Controllotron Model 990 or equivalent with 2% FS accuracy.
g 4.7 Request operations align or verify alignment of the chilled cter system for i
operation per OPOP02-CH-0001 for the two trains being tested.
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300 Ton Essential Chiller Bypass.
I PEP 07-CH-0002 Modification Verification Test Rev.O Page 6 of 45 4.8 Test Coordinator shall conduct pretest briefing with Test and Operations personnel AND initial on Data Sheet (-2).
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5.0 Precautions e
5.1 If at any time during this procedure any Essential Chiller in the Train 2E or Trains being tested trips, suspend the test and evaluat'e the condition M
before resuming the test. Record the test status in the Chronological Log, Data Sheet (-6).
5.2 Shift turnover for the test shall be performed with the permission of the Shift Supervisor under the coordination of the Test Coordinator, AND documented in the Chronological Test Log, Data Sheet (-6). Oncoming test personnel SHALL sign onto the Test Chronological Log Sheet (-6).
5.3 Insure during the perfonnance of this test adequate Essential Chilled Water System Chillers remain in operation to support plant cooling requirements.
CAUTION i
Notify Operations prior to performing any of the following actions as they will require the respective Essential Chilled Water system to be declared INOPERABLE: -
1.
Changing the position of any Essential Chilled Water System valve from its position defined in OPOP02-CH-0001, Essential Chilled Water System.
2.
Changing the position of any Essential Cooling Water System valve from its
. position d'efined in OPOP02-EW-000), Essential Cooling Water System.
3.
' Resetting the 300 Ton Chiller Chilled Water Temperature Control Module AICHTC9603, BICHTC9604, or CICHTC9605 for the applicable train..
6.0 Procedure 6.1 Test #1. 300 Ton Chiller Test for MOD 93049 6.1.1 Notify the Shift Supervisor that Test #1 will commence and to declare the affected Essential Chilled Water train inoperable, AND initial on Data Sheet (-2).
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300 Ton Essential Chiller Bypass IPEP07-CH-0002 Modification Verification Test -
Rev.O Page 7 of 45 6.1.2 Verify prerequisites have been completed and precautions have been read AND initial on Data Sheet ( 2).
6.1.3 Request Operation place the 300 Ton Essential Chiller I?A(12B)(12C) handswitch in Pull to Lock for the train to be tested.
NOTE At the discretion of the test coordinator Steps 6.1.4,6.1.7 and 6.1.8 may be performed out of sequence. Substeps shall be performed in the order written.
6.1.4 Install the following test equipment on the applicable 300 Ton Chiller to be tested at the location listr '
l connect each instrument to the
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data logger.
6.1.4.1 Pressure indicator / transducer,0-50 psia, at CONDENSER SERVICE VALVE AND initial on Data Sheet (-2).
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6.1.4.1.1 Open Condenser Service Isolation Valve AND 4
initial on Data Sheet (-2).
6.1.4.2 Pressure indicator / transducer,0-50 psia, at EVAPORATOR SERVICE VALVE AND initial on Data Sheet (-2).
6.1.4.2.1 Open Evaporator Service Isolation Valve AND initial on Data Sheet (-2).
6.1.4.3 RTD at Chiller Condenser ECW inlet thermowell EW-T,W-6904A (6905A) (6906A) for the train being tested.
(Range of 32-100*F), AND initial on Data Sheet (-2).
6.1.4.4 RTD at Chiller Condenser ECW outlet thermowell EW-TW-6904B (6905B) (6905B) for the train being tested.
(Range of 32-100*F), AND initial on Data Sheet (-2).
6.1.4.5 RTD at Chiller Evaporator CH inlet thermowell CH-TI-9502 (9508) (9514) [ Remove existing temperature indicator] for the train being tested AND for the train to be tested in Test
- 3. (Range of 32-100*F), AND initial on Data Sheet (-2).
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q 300 Ton Essential Chiller Bvnass 1 PEP 07-CH-0002 Modification Verification Test Rev.O i
Page 8 of 45 6.1.4.6 RTD at Chiller Evaporator CH outlet thermowell CH-TI-9502A (9508A) (9514A) [ Remove existing temperature indicator] for the train being tested AND for the train to be tested in Test #3. (Range of 32-100*F), AND initial on Data Sheet (-2).
6.1.4.7 RTD at chiller compressor discharge thermowell, located in the compressor discharge volute (not labeled) for the train being tested AND for the train to be tested in Test #3.
(Range of 32-230 F), AND initial on Data Sheet (-2).
6.1.5 Install the 0-50 PSIG pre
- transmitter on the Chiller Oil Pressure Indicator Nianifold on the 300 Ton chiller being tested AND initial on Data Sheet (-2), as follows:
6.1.5.1 Open the door to the local Chiller Control Panel on the chiller to be tested.
6.1.5.2 Close Chiller Oil Pressure Gauge Service Isolation Valve
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CH-1318 (1321) (1324) on the Chiller to be tested.
6.1.5.3 At the Oil Pressure Gauge disconnect tubing running to the Oil Pressure Gauge.
6.1.5.4 Install an instrument test tee on the tubing going to the oil pressure gauge. Reconnect oil pressure gauge tubing to the tee.
6.1.5.5 Connect the test instrument tubing to the open port on the test tee AtLD initial on Data Sheet (-2).
6.1.5.6 Request Operations place the Aux Oil Pump Handswitch in Manual for the chiller to be vented.
6.1.5.7 Vent air from all affected lines as necessary by cracking open the oil pressure gauge service valve CH1318(1321)(1324) for the chiller to be tested.
6.1.5.8 Reque'st Operations place the Aux Oil Pump Handswitch in Auto for the chiller vented.
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300 Ton Essential Chiller Dynass IPEP07-CII-0002 Modification verifiestion Test Rev.O Page 9 ef 45 6.1.5.9 Fully open Od!!cr Oil Pressure Gauge Service Isolation Valve Cill3tE(1321)(1324) for the c!dlier to be tested, AND initial on Data Sheet (-2).
6.1.6 Connect instrumentation lamited in Step 6.1.4 and 6.1.5 to the Data Logger ANQ initial on Data Sheet (-2).
CAITITON If using 0-50' WC differential pressure gauge, the range of the gauge shall not be more than 3 times the irx!!cated reading.
6.1.7 Install a 0-30' WC (or 0-50' WC) differential pressure gauge on the F
300 Ton Odlier Odlied Water flow element FE-9502 (FE 9503) (FE-9514) for the train tested, AND for the chiller to be tested in Test #3.
AND initial on Data Sheet (-2).
6.1.7.1 Request operations open or verify open FE-9502 (9508)
(9514) instrument isolMon valves CH-0887 and CH-OSS8 (CIM889 and Cil-0890) (CH-0891 and CH-0892) for the 4
train being tested and for the chiller to be tested in Test #3
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AND initial on Data Sheet (.2).
I 6.1.8 Install Controllotron Flow Meter on the ESF Pump Room AHU Outlet ~
piping 2' CHI 133WA3 (Cill227WA3) (CH1333WA3) for the train being tested, AliQ initial on Data Sheet (-2).
- l 6.1.8.1 Install a 030" WC ( or 040" WC) di2erential pressure gauge on the 150 Ton j
Qulled Water flow element FE-9473 (FE.9483) or a Contro11otron Flow 4
Computer by FE.9493 for the train to be tested AND initial on Data Sheet (.2).
@D 6.1.8.1.1 Request Operations open or verify open FE-9473 (FE.9483) bstrument isolation valves CH.0881 and CH-0882 (010883
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and 010884) for the train being tested ( train C requires no valves epen ) AND initial on Data Sheet ( 2) 6.1.9 Request Electrical Maintenance or PED reset the 300. Ton Cidtler Temperature Control Modules AICliTC9603 (DICitTC9604)
(CICilTC9605) to 484/.l*F, for the chiller being tested, as follows:
6.1.9.1 If chilled water outlet temperature is less than 48'F operate chilled water pump with the eldlier secured to allow chilled water outlet temperature to increase to >48'F.
6.1.9.2 Raise the setting of the 300 Ton Essemial Chiller Outlet Temperature Control Module by turning the Temperature Control Point dial on the fare of the module clockwise
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several increments. (Each increment is approximately l'F.)
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t 300 Ton Esocal Chiller Hvnass IPEP07-CII-0002 Modification Veri 0 cation Test Rev.0 Page 10 of 45 6.1.9.3 Request Operations restart the chiller previously secured AND Observe discharge water temperature with the chiller in operation using installed M&TE.
6.1.9.4 Continue to adjust the Temperature Control Point dial on the l
Temperature Current Module until chilled water discharge temperature is stable at approximately 48+/-I*F, AN_Q record final temperatures on Data Sheet (-2).
6.1.10 Rebalance the Essential Chilled Water, System for the train being tested i
per Addendum 1, (2), (3), AND record on Data Sheets (-3), (-4), (-5) as applicable.
6.1.11 Verify ECW Pump Discharge temperature is s 69 'F using NIEWTI6883 (6888) (6893) located on CP-002, AND record on Data Sheet (-2).
6.1.12 Request Operations secure the 300 Ton Essential Chiller 12A(12B)(12C) for the chiller to be tested AND place handswitch to Fuii R Led:
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6.1.13 Request Operations close or verify closed the 300 Ton Chiller ECW t
outlet valve EW-PV-6904 (6905) (6906).
6.1.14 Request Operations establish flow through the 300 Ton Chiller ECW outlet bypass valve EW-3013 (EW-3019) (EW-3025) to 240 GPM as' indicated on local flow indicator FI-6904C (6905C) (6906C).
1 6.1.15 Request Operations place 150 Essential Chiller 11A (1IB) (llc) handswitch on CP022 to PULL TO LOCK for the train being tested.
t 6.1.16 Request Operations close or verify closed the 150 Ton Chiller ECW outlet valve EW-PV-6854 (6864) (6874).
6.1.17 R.equest Operations reposition the 150 Ton Chiller ECW Outlet Bypass Valve EW-3010 (3016) (3022) to 3/4 hand wheel turn open.
6.1.18 Request Operations place Essential Chilled Water Pump 11A (llB)
(11C) handswitch to PULL TO LOCK for the train being tested.
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300 Ton Essential Chiller Bypass IPEP07-CH-0002 Modi 0 cation Verineation Test Rev.0.
Page 11 of 45 A
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-+n 6.1.19 Request Operations secure Essential Cooling Water Pump 1A d
(IB)(IC) for the train being tested.
k 6.1.20 Wait 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> maintaining this line-up. RECORD start of 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> g
holding period on Data Sheet (-2).
gg 6.1.21 When the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> has passed, THEN verify the Essential n
y Cooling Water Pump secured in step 6.1.19 has not run in v
o the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and record the completion time on Data 8 i Sheet (-2).
6.1.22 Verify ECW Pump Discharge temperature is still's 69'F using NIEWTI6883 (6888) (6893) located on CP-002 AND record on Data Sheet (-2).
6.1.23 Request Operations to place EAB-AND Control Room ventilation systems are in operation for the train of Essential Chilled Water being tested.
6.1.24 Request Operations place the Control Room AND EAB Main area Chilled Water temperature modulating valve handswitches TV-9476A/B (TV-9486A/B) (TV-9496A/B) and TV-9477A/B (TV-9487A/B) (TV-9497A/B) in bypass closed position for the train being tested.
6.1.25 Request Operations start or verify Essential Chiller Supplemental Cooler 11 A (1IB) (11C) is in operation for the train being tested.
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t 300 Ton Essential Chiller Dvoass IPEP07-CH-0002 Modification Verification Test Rev.O s
Page 12 of 45 CAUTION To insure satisfactory data collection Step 6.1.26 and substeps must be performed in the order and time sequence written. Ensure Operations and Test Personnel are fully briefed before proceeding 6.1.26 Perform the following substeps within the specified time restrictions to ensure satisfactory data collection during the chiller start.
6.1.26.1 Configure data logger to record temperature and pressure l
readings at once per second.
6.1.26.2 Request Operations START the ECW Pump 1 A (IB)(IC)for the train being tested.
6.1.26.3 10 seconds after the start of the ECW Pump, request Operations START the Essential Chilled Water Pump for the train being tested.
k 6.1.26.4 START the data logger concurrent with the ECW pump start.
6.1.26.5 Request Operations IMMEDIATELY (within' 5 seconds of starting the chilled water pump) start the 300 Ton Essential Chiller 12A (12B) (12C) for the train being tested.
6.1.27 RECORD Essential Chilled Water differential pressure through the 300 Ton Chiller Evaporator at FE-9502 (9508) (9514) for the train being tested on Data Sheet (-2).
6.1.28 RECORD 300 Ton Chiller Condenser ECW bypass flow using FI-6904C (6905C) (6906C) for the train tested on Data Sheet (-2).
6.1.29 Continue data collection on the data logger for at least 30 minutes OR until Essential Chilled Water outlet temperature reaches 48 F for the train being tested.
6.1.30 TURN OFF the data logger.
300 Ton Essential Chiller Ilynass IPEP07-CH-0002 Modification Verification Test Rev.O i
Page 13 of 45 4
6.1.31 IECORD Essential Chilled Water differential pressure through the 300 Ton Chiller Evaporator at FE-9502 (9508) (9514) for the train being tested on Data Sheet (-2).
6.1.32 RECORD 300 Ton Chiller Condenser ECW bypass flow using FI-6904C (6905C) (6906C) for the train being tested on Data Sheet (-2).
6.2 Test #2. 300 Ton Chiller Test for MOD 93049 6.2.1 After operation of the 300 ton chiller for at least one hour RECORD Chiller ECW pump discharge temperature using NIEWTI6883(6888)(6893) AHI2 Essential Chilled Water outlet temperatures using installed RTD's on Data Sheet (-2).
6.2.2 Request Operations secure the 300 Ton Essential Chiller 12A (12B)
(12C) being tested.
t 6.2.3 Request Operations secure ECW Pump 1 A (IB) (IC) for the train being test.
NOTE CR/EAB ventilation fans may be utilized as required to enhance chilled water
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system heat up.
6.2.4 Continue operation of the Chilled Water pump in a closed loop heatup of the chilled water system being tested.
j 6.2.5 Request Operations start or stop CR/EAB ventilation fans as required to assist the heat up of the Essential Chilled Water System.
6.2.6 Continue running the Essential Chilled Water Pump until Essential l
Chilled Water temperature, as measured by the RTDs mounted in the chiller evaporator outlet thermowell is at least 25" greater than ECW
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Pump discharge Temperature as measured at NIEWTI6883 (6888)
(6893) located on CP002.
i 6.2.7 RECORD Chiller ECW Pump discharge temperature and Essential Chilled Water outlet temperatures on Data Sheet (-2) AND verify at least 25"AT.
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300 Ton Essential Chiller B_ypass IPEP07-CH-0002 Modification Verification Test Rev.O Page 14 of 45 6.2.8 Request Operations secure the Essential Chilled Water Pump N
ll A(llB)(llc) for the train being tuted.
R CAUTION M
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R To ensure satisfactory data collection, Step 6.2.'l must be performed in the order and timed sequence as written. Ensure Operations and Test Personnel are fully briefed before gk proceeding.
6.2.9 Perform the following substeps within the specified time restrictions to ensure satisfactory data collection during the chiller start.
6.2.9.1 Configure data logger to record temperature and pressure -
readings once per second.
6.2.9.2 Request Operations START the ECW Pump 1 A (1B)(1C) l for the train being tested.
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1-6.2.9.3 START the data logger concurrent with the ECW Pump start.
6.2.9.4 After 31/2 minutes, request Operations START the Essential Chilled Water Pump 11 A (11B) (11C) for the train being i
tested.
t 6.2.9.5 Request operations IMMEDIATELY (within 5 seconds of Essential Chilled Water Pump stan) START the 300 Ton 1
Essential Chiller 12A (128) (12C) for the train being tested.
6.2.10 Continue to take data on the data logger until the chiller outlet Essential Chilled Water temperature reaches 48 *F for the train being tested.
.i 6.2.11 TURN OFF the data logger.
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I 300 Ton Essential Chiller Bynass 1 PEP 07-CH.0002 Modification Verification Test Rev.O Page 15 of 45 6.3 Test #3. 300 Ton Chiller Test for MOD 93049 6.3.1 Notify the Shift Supervisor that Test #3 will commence and to declare the SECOND affected Essential Chilled Water train inoperable AND -
initial on Data Sheet (-2).
6.3.2 Request Electrical Maintenance QR PED reset the 300 Ton Chiller Temperature Control Modules AICHTC9603 (BICHTC9604)
(ClCHTC9605) to 48+/-l*F as follows:
6.3.2.1 If Chilled Water Temperature Outlet is less than 48'F as read on test RTD's request operations secure the chiller if not
,g already secured. Operate Chilled Water Pump to allow g
o, chilled water temperature to increase to >48'F by continuing to operate the chilled water pump, otherwise proceed to step f!
6.3.2.2.
2*E 6.3.2.2 Raise the setting of the 300 Ton Essential Chiller Temperature Current Module by turning the Temperature
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Control Point dial clockwise several increments. (Each increment is approximately l'F).
3 6.3.2.3 Request Operations start the chiller if previously secured AND observe chilled water discharge temperature as read on test RTD's using installed M&TE.
6.3.2.4 Continue to adjust the Temperature Control Point dial on the-Temperature Current Module until chilled water discharge y
temperature is stable at approximately 48+/-l'F, AND record % $
final temperature on Data Sheet (-2).
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4 6.3.3 Remove the cor'itrollotron installed on the ESF Pump Room AHU the train tested in Test #1.
6.3.4 Install and remove the Controllotron Flowmeter at C train 150 Ton 3m Chiller piping 4" CH1301WA3 or ot' theESF Pump Rooni AHU Outlet piping 2" CH1133WA3 (CH'A227WA3) (CH1333WA3) as l {
required to perform the flow balance per step 6.3.5 for the second y
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train being tested.
6.3.5 Rebalance the Essential Chilled Water System for the second train
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being tested per Addendum 1, (2), (3) record on Data Sheet (-3), (-4), (-5) as applicable.
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l 300 Ton Essential Chiller Hvoass IPEP07-CII-0002 I
Modification Verification Test Rev.0 Page 16 of 45 6.3.6 Request Operations stop the SECOND 300 Ton Essential Chiller 12A(12B)(12C) being tested.
6.3.7 Verify ECW Pump Discharge temperature is s 69 "F using NIEWTI6883 (6888) (6893) located on CP-002 M record on Data Sheet (-2).
6.3.8 Request Operations close or verify closed 300 Ton Chiller ECW outlet valve EW-PV-6904 (6905) (6906) for the second chiller being tested.
6.3.9 Request Operations establish flow through the 300 Ton Chiller ECW outlet bypass valve EW-3013 (EW-3019) (EW-3025) to 240 GPM as indicated on local flow indicator FI-6904C (6905C) (6906C) for the second chiller being tested.
6.3.10 Request Operations place the 150 Ton Essential Chiller 11 A (1IB)
(llc) handswitch on CP022 to PULL TO LOCK for the second train being tested.
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6.3.11 Request Operations close or verify closed the 150 Ton Chiller ECW outlet valve EW-PV-6854 (6864) (6874) for the second train being tested..
6.3.12 Request Operations reposition the 150 Ton Chiller ECkOutlet Bypass Valve EW-3010 (3016) (3022) to 3/4 hand wheel turn open for the second train being tested.
6.3.13 Request operations verify the EAB Main Area ventilation is in operation for each of the two trains of Essential Chilled Water being tested.
6.3.14 Request operations verify that Control Room ventilation is in operation i
for ONLY ONE of the two trains of Essential Chilled Water being tested.
6.3.15 For the second train being tested, request Operations verify the Control Room M EAB Main area chilled water temperature modulating valve handswitches TV-9476A/B (TV9486A/B) (TV9496A/B) and TV9477A/B (TV9487A/B) (TV9497A/B) are in bypass closed position.-
6.3.16 Request Operations start and/or verify the two 300 Ton Essential Chillers 12A (12B) (12C) being tested are in operation.
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f 300 Ton Essential Chiller Bynass -
IPEP07-CH-0002 i
Modification Verification Test Rev.O Page 17 of 45 6.3.17 Verify Chillers have been in service for at least I hour AND record on Data Sheet (-2).
6.3.18 Configure the Data Logger to record data for both 300 ton chillers at 10 minute intervals for I hour:
6.3.18.1 Essential Chilled Water inlet temperatures.
6.3.18.2 Essential Chilled Water outlet temperatures.
6.3.18.3 Essential Chiller Compressor Discharge temperatures.
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6.3.19 START data logger.
6.3.20 RECORD Essential Chilled Water flows through the 300 ton chillers at 10 minute intervals on Data Sheet (-2).
6.3.21 Record the following information on Data Sheet (-2) at least once during the test:
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6.3.21.1 Outside air dry bulb and wet bulb temperatures.
6.3.21.2 Outside air % relative Humidity.
6.3.21.3 Approximate Prerotation Vane percent open position for both chillers being tested.
6.3.21.4 Approximate Hot Gas Bypass Valv percent open position for both chillers being tested.
6.3.21.5 Motor amps for both the 300 Ton Essential Chillers being tested using the ammeter at load center EI A cubicle 4 (ElB cubicle 9) (EIC cubicle 9).
6.3.22 TURN OFF data logger.
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l 300 Ton Essential Chiller Bynass IPEP07-CH-0002 '
I Modification Verification Test Rev.0 Page 18 of 45 i
NOTE Restoration steps 63.23 through 63.29 may be performed in parallel with Test #4.
f 63.23 Request Operations restore the second Essential Chilled Water trains j
~
being tested as follows AND record on Data Sheet (-2) the train to be restored.
63.23.1 Request operations secure the 300 Ton Essential Chiller 12A (12B) (12C) in the train being restored, per step 63.23.
63.23.2 Realign Essential Chilled Water System per OPOP02-CH-0001.
63.233 Realign Essential Cooling Water System per OPOP02-EW-0001.
i 63.23.4 Return Temperature Control Point dial on the Temperature Current Module to the fully counterclockwise position.
63.23.5 Request operations close FE 9502 (9508) (9514) instrument isolation valves CH0887 and CH0888 (CH0889 and CH0890) l (CH0891 and CH0892) for the train being restored per Step 6 3.23.
63.24 Notify the Shift Supervisor that testing of the second Essential Chilled Water train is complete and that the train may be returned to service, record on Data Sheet (-2).
63.25 Close Condensgr Service Isolation Valve AND initial on Data Sheet (-2) for the train tested in Test #1.
63.26 Close Evaporator Service Isolation Valve AND initial on Data Sheet (-2) for the train tested in Test #1.
1 63.27 Request operation close FE9502(9508)(9514) instrument isolation valves CH0887 and CH0888(CH0889 and CH0890)(CH0891 and CH0892) for the train tested in Test #1.
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E 6.3.27.1-Request Operadons close or verify closed FE-9473 (FE-9483) instrument isolation valves 01-0881 and CH-0882 (CH-0883 4
and CH0884) for the train tested in Test #1 ( train C requires no valves closed ).
300 Ton Essential Chiller Bynass IPEP07-CH-0002 Modification Verification Test Rev.O Page 19 of 45
.)
63.28 Remove the 0-50 PSIG pressure transmitter on the Chiller Oil Pressure Indicator Manifold previously installed for Tests #1 and #2 as follows:
t 63.28.1 Open the door to the local Chiller Control Panel.
i 63.28.2 Close Chiller Oil Pressure Gauge Service Isolation Valve CH-1318 (1321) (1324) on the Chiller.
63.283 Disconnect and remove instrument test tee on the tubing to oil pressure gauge. Reconnect oil pressure gauge tubing to the oil pressure gauge valve, AND initial on Data Sheet (-2).
63.28.4 Request Operations place the Aux Oil Pump handswitch in Manual for the chiller to be vented.
63.28.5 Vent air from all affected lines as necessary by cracking open the oil pressure gauge service isolation valve CH-1318(1321)(1324).
63.28.6 Request operations place the Aux Oil Pump Handswitch in Auto for the chiller vented.
od 63.28.7 Open Chiller Oil Pressure Gauge Service Isolation Valve f.
CH1318(1321)(1324) AND initial on Data Sheet (-2).
63.29 Remove all M&TE previously installed in steps 6.1.4,6.1.7,6.1.8, g
a 63.4, and record on Data Sheet (-2).
g 6.4 Test #4,150 Ton Chiller Test for MOD 93049 6.4.1 Verify the train to be tested is not the train that was selected for return to service in Step 63.23 AND record Tag /fPNS of chiller to be tested I
on Data Sheet (-2).
l i
6.4.2 Verify ECW Pump Discharge temperature is s 69 'F using NIEWTI6883 (6888)(6893) located on CP-002 AND record on Data Sheet (-2).
-1 6.43 Request Operations place the 300 Ton Essential Chiller 12A (12B)
(12C) handswitch on CP022 to PULL TO LOCK for the train being i
tested.
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300 Ton Essential Chiller BYnass I PEP 07-CII-0002 Modification Verification Test Rev.O Page 20 of 45 6.4.4 - Request Operations reposition 300 Ton Chiller ECW Outlet Bypass Valve EW-3013 (3019) (3025) to 3/4 hand wheel turn open.
6.4.5 Request Operations establish flow through the 150 Ton Chiller ECW outlet bypass valve EW-3010 (EW-3016) (EW-3022) to 120 GPM as indicated on local flow indicator FI-6854C (6864C) (6874C).
6.4.6 Request Operations place Essential Chilled. Water Pump ll A (llB)
(llc) handswitch on CP022 to PULL TO LOCK for the train being tested.
m 7fr m
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5 6.w.7 Request Operations secure Essential Cooling Water Pump 1A
(
l (IB)(IC) for the train being tested.
6.4.8 Request Operations insure the 150 Ton Essential Chiller ll'A (llB)
(llc) handswitch on CP022 is in PULL TO LOCK for the train being m-When the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> has passed, THEN verify the Essential Co w
~
tested.
y 6.4.9 Water Pump secured in step 6.4.7 has not run in the past 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />sy y
)
and" record the completion time on Data Sheet (-2).
f 6.4.10 WHEN the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> has passed, THEN record completion time on Data Sheet (-2).
6.4.11 Request Operations place EAB AND Control Room ventilation systems in operation for the train of Chilled Water to be tested.
6.4.12 Request Operations ensure Control Room AND EAB Main area
~
Chilled Water temperature modulating valve handswitches TV9476A/B (TV9486A/B) (TV-9496A/B) and TV-9477A/B (TV9487A/B)
(TV9497A/B) are in bypass closed position for the train being tested.
6.4.13 Request Operations START the ECW Pump 1 A (IB) (IC) for the train being tested.
[
e 300 Ton Essential Chiller Bypass 1 PEP 07-CH-0002 i-Modification Verification Test Rev.O i
Page 21 of 45 6.4.14 WHEN 31/2 minutes have elapsed, THEN request operations start Essential Chilled Water Pump 11 A (1IB) (llc) for the train being tested.
6.4.15 IMMEDIATELY (within 5 seconds of CH Pump start) request Operations start the 150 Ton Essential Chiller ll A (1IB) (1IC) for the train being tested.
6.4.16 5 minutes and again 30 minutes after the 150 Ton Essential Chiller start, RECORD the following parameters for the 150 ton chiller being tested using installed plant instrumentation on Data Sheet (-2).
6.4.16.1 Chiller condenser pressure 6.4.16.2 Chiller evaporator pressure 6.4.16.3 Chiller oil pressure 6.4.16.4 Chilled Water inlet temperature i
6.4.16.5 Chilled Water outlet temperature 6.4.17 Notify Shift Supervisor testing is complete.
6.4.18 Request Operations restore the Essential Chilled Water train being tested as follows ANLD record on Data Sheet (-2).
'l 6.4.18.1 Realign Essential Chilled Water System per OPOP02-CH-0001.
1 6.4.18.2 Realign Essential Cooling Water System per OPOP02-EW-0001.
6.4.18.3 Return temperature control dial on the Temperature Control Module fully counterclockwise.
)
6.5 Attach data logger data to Data Sheet (-2) 6.6 Test Coordinator shall sign, date and record the time on Data Package Cover Sheet (-1) indicating all M&TE is removed and Shift Supervisor has been informed of test completion.
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2 300 Ton Essential Chiller Bypass 1 PEP 07-CII-0002 -
Modification Verification Test Rev.O Page 22 of 45 6.7 Test Coordinator shall evaluate the test results against the Section 7.0 Acc ptance Criteria for acceptability and record on Data Sheet (-1).
6.8 Forward documentation to Design Engineering for review.
6.9 Design Engineering shall evaluate the test results against the Section 7.0 Acceptance Criteria for acceptability and record on Data Sheet (-1) AND return to the Cognizant System Engineer. Additional sheets used to perform.
the test evaluation shall be attached to this package.
4 6.10 Cognizant System Engineer shall review and forward to the Records Management System for storage as a permanent plant record.
7.0 Acceptance Criteria 7.1 Test #1 i
7.1.1 Chiller starts and operates successfully for the duration of the test.
7.1.2 Design Engineering evaluation is required for acceptance of the I
following:
7.1.2.1 Peak condenser pressure is less than 24 psig..
7.1.2.2 Peak load on the chiller condenser is less than 6.4 x 10' BTU /IIR 7.2 Test #2 7.2.1 Chiller starts and operates successfully for the duration of the test.
7.3 Test #3 7.3.1 Chiller starts and operates successfully for the duration of the test.
i 7.4 Test #4 7.4.1 Chiller starts and operates successfully for the duration of the test.
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100 Ton Essential Chiller Bynass IPEP07-CH-0002 Modification Verification Test Rev.O Page 23 of 45 i
8.0 References 8.1 Technical Specification 3.7.14 8.2 OPOP02-CH-0001, Essential Chilled Water System 8.3 Plant Modification 93049 8.4 OPOP02-EW-0001, Essential Cooling Water System 9.0 Sunnort Documents 9.1 Addendum 1, A Train Essential Chilled Water Flow Balancing 9.2 Addendum 2, B Train Essential Chilled Water Flow Balancing 9.3 Addendum 3, C Train Essential Chilled Water Flow Balancing 9.4 Addendum 4, Psychrometric Chart t
9.5 Addendum 5, Data Logger Setup 9.6 Data Package Cover Sheet (-1) 9.7 Test Verification Data Sheet (-2) 9.8 A Train CH Balancing Data Sheet (-3) 9.9 B Train CH Balancing Data Sheet (-4) 9.10 C Train CH Balancing pata Sheet (-5) 9.11 Chronological Test Log Data Sheet (-6)
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300 Ton Essential Chiller Bvnass IPEP07-CII-0002 Modification Verification Test Rev.O Page 24 of 45 ADDENDUM 1 A TRAIN ESSENTIAL CIHLLED WATER FLOW BALANCING (Page 1 of 2)
COMPONENT DESCRIPTION INITIAL MOD 93049 MEASUREMENT NUMBER SETTING CHANGED LOCATION / DEVICE SETTING 3V111VCH001 (11 A Chiller) 303 GPM 300 -0/+60 GPM FE-9473 AP " Gauge 3V111VCH004 (12A Chiller) 607 GPM 600 -0/+60 GPM FE-9502 AP " Gauge 3V111VHX026 (Elect Pen CC Space) 3.8 PSID CH0943,0944 AP Gauge 3V111VHX016 (Cont Rm CC) 7.5 PSID CH0956,1448 AP Gauge 3V111VHX007A (EAB Mn Area CC 13.3 PSID CH1477,1478 AP Gauge 3V111VHX0078 (EAB Mn Area CC) 13.0 PSID CH1476,1479 AP Gauge 3V101VAH012 (Rm Mu AHU WTR AHU) 1.8 PSID CH10' 9,1048 4
AP Gauge 3V101VAH019 (Ess Chlr AHU) 2.5 PSID CH1037,1036 AP Gauge 3V101VAH008 (BA Pump Rm AHU) 2.0 PSID CH1041,1040 AP Gauge 3V101VAH010 (Rom 033 CVCS AHU) 1.0 PSID CH1045,1044 AP Gauge 3V101VAH016 (Radwaste CR CC) 31 GPM 0GPM N/A
[
3V101VAH022 (Rad Montr. Rm AHU) 0.9 PSID CH1057,1056 AP Gauge 3V121VHX012 (ESF Pump Rm CC) 62.5 GPM 4013 GPM Controllotron Flow Element 3V121VAH012 (FHB IVC AHU) 1.8 PSID CH1025,1024 AP Gauge 3V111VCH001 11A Chiller N/A CH1519,1462 AP Gauge 3V111VCH004 12A Chiller N/A CH1428,1429 AP Gauge
- MOD 93049 has no specified change in design flow rates. Readings will be taken for comparison only (no acceptance criteria) to initial flow settings.
- Flows on the Essential Chiller can be computed from annular flow equation on Data Sheet (-3).
1
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300 Ton Essential Chiller Bynass I PEP 07-CH-0002 Modification Veri 6 cation Test Rev.O Page 25 of 45 ADDENDUM 1 A TRAIN ESSENTIAL CHILLED WATER FLOW BALANCING (Page 2 of 2)
Balancing Sequence 1.
Record initial as found flow readings on Essential Chillers 11 A,12A and ESF Pump Rm AHU on Data Sheet (-3).
2.
Valve out the Radwaste Control Room AHU by closing valves CH0673 and CH0674.
3.
Set flow on Essential chillers 11 A (CH0289),12A (CH0589) and record flows on Data -
Sheet (-3)".
4.
Set flow on ESF Pump Rm AHU (CH0735) and Record on Data Sheet (-3).
5.
Repeat steps 3 & 4 as many times as needed to set all flows in required ranges.
6.
Take AP readings on remaining components for comparison only (No Acceptance Criteria). Also take AP readings on Essential Chillers 11 A,12A. Record results in Data Sheet ( 3).
i 4
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300 Ton Essential Chiller Bvnass I PEP 07-Cil-0002 Modification Verification Test Rev.O Page 26 of 45 ADDENDUM 2 B TRAIN ESSENTIAL, CHILI ED WATER FLOW BAl.ANCING (Page 1 of 2) 4 I
I COMPONENT DESCRIPTION INITIA1.
MOD 93049 MEASUREMENT l4 NUMBER SETTING CHANGED LOCATION / DEVICE SETTING k
'4 3V111VCH002 (118 Chiller) 293 GPM 300-10/+60 GPM FE-9483 AP ** Gauge 3V111VCH005 (128 Chitler) 587 GPM 600-10/+60 GPM FE-9508 AP ** Gauge 3V111VHX025 (Elect Pen Space CC) 6.5 PSID CH0948,0947 AP Gauge 3V111VHX017 (Cont Rm CC) 7.0 PSID CH0960,1452 AP Gauge 3V111VHX010A (EAB Mn Area CC) 13.1 PSID CH1481.1482 AP Gauge 3V111VHX010B (EAB Mn Area CC) 12.9 PSID CH1480.1483 AP Gauge 3V101VAH013 (Rx M/u Pap Rm AHU) 2.2 PSID CH1069,1068 AP Gauge 3V101VAH026 (Essen Chlr AHU) 3.3 PSID CH1061,1060 AP Gauge 3V101VAH011 (Rm 33 CVCS AHU) 0,95 PSID CH1065,1064 g
g$
3V101VAH014 (Rrn 226 CVCS AHU) 0.9 PSID CH1073,1072 3
4T 3V121VAH010 (SFP Pump AHU) 2,0 PSID CH1017,1619 d
AP Gauge j k 3V121Vio(013 (ESF Pump Rrn CC) 62.5 GPM 40 + 3 GPM Controllotron Flow Y:
Element 3V121VAH013 (FHB IVC AHU) 1.6 PSID CH1029,1028 AP Gauge j
3V111VCH002 118 Chiller N/A CH1520.1463 AP Gauge
~
3V111VCH005 120 Chiller N/A CH1431,1430 AP Gauge
- MOD 93049 has no specified change in design flow rates. Readings will be taken for comparison w
only (no acceptance criteria) to initial flow settings.
- f e
Flows on the Essential Chiller can be computed from the flow equation on Data Sheet (-4).
]
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l 300 Ton Essential Chijler Dynass.
IPEP07 CH-0002 Modi 6 cation Verification Test Rev.O Page 27 of 45 ADDENDUM 2 B TRAIN ESSENTIAL CHILLED WATER FLOW BALANCING (Page 2 of 2) j Balancing Sequence l.
Record initial as found flow readings on Essential Chillers 11B,12B and ESF Pump Rm AHU on Data Sheet (-4).
2.
Set flow on Essential Chillers 11B (CH0298),12B (CH0598) and record flows on Data Sheet (-4)**.
3.
Set flow on ESF Pump Rm AHU (CH0752) and Record on Data Sheet (-4).
4.
Repeat steps 2 & 3 as many times as needed to set all flows in required ranges.
l 5.
Take AP readings on remaining components for comparison only (No Acceptance Criteria). Also take AP readings on Essential Chillers llB,128. Record results in Data Sheet (-4).
4 v-9 f
i
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300 Ton Essential Chiller Bvnass 1 PEP 07-Cll-0002 ModiGention veriGcation Test Rev.O Page 28 of 45 L\\DDENDUM 3 C TRAIN ESSENTIAL CHILLED WATER FI.OW BALANCING (Page I of 2)
COMPONENT DESCRIPTION INITIAL MOD 93049 MEASUREMENT 4
a ao Jw5 NUMBER SETTING CHANGED LOCATION / DEVICE m
SETTING I
80 9
- ~ '
+7 3V111VCH003 (11C Chilter) 318 GPM 300 -15/+60 GPM Controllotron Flow Meter v [
4%
os 3V111VCH00G (12C Chiller) 63S GPM 600 -10/+60 GPM FE-9514 AP " Gauge b
3Viel VAH009 (BA Pump Rm AHU) 2.0 PSID CH1080.1081 P
AP Gauge 3V111VHXO18 (Cont Rm CC) 7.2 PSID CH1456.0964 AP Gauge 3V111VHX013A (EAB Mn Area CC) 12.5 PSID CH1485.1486 LP Gauge 3V111VHX0138 (EAD Mn Area CC) 12.5 PSID CH1484,1487 AP Gauge 3V101VAH021 (Essen Chlt AHU) 2.75 PSID CH1077,1076 AP Gauge
(
3V101VAH007 (Rm 44 CVCS AHU) 1.0 PSID CH1085,1084 AP Gauge 3V101VAH015 (Rm 226 CVCS AHU) 0.2 PSID CH1089,1088 g
3V101VAH018' (Radwaste CR AHU) 31 GPM 0GPM N/A k
3V101VAH023 (Rad Montr. Rm AHU)
.075 PSID CH1097, CH1096 QT.
3V111VHx 024 (Elect Pen Sp CC) 8.25 PSID CH952, 951 3
3V121VAH014 (FHB IVC AHU) 1.0 PSID CH1033,1032 AP Gauge
}
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A 3V121VAH011 (SFP Pump AHU) 2.0 PSID CH1021,1622 AP Gauge 3V121VMX 014 (ESF Pump Rm CC) 63 GPM 4013 GPM Controllotron Flow j$h&
Element C
5-e 4.
3V111VCH003 11C Chiller N/A CH1524,1454 AP Gauge 3V111VCH006 12C Chiller N/A CH1433,1432 AP Gauge
- MOD 93049 has no speciGed change in design now rates. Readings will bc taken for comparison only (no acceptance criteria) to initial Dow settings.
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h0
" Flows on the Essential Chiller can be computed from the flow equation on Data Sheet (-5).
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m
300 Ton Essential Chiller Bvoass IPEP07-CH-0002 Modification Verification Test Rev.O Page 29 of 45 ADDENDUM 3 C TRAIN ESSENTIAL CHILLED WATER FLOW BALANCING (Page 2 of 2)
Balancing Sequence 7
1.
Record initial As Found flow readings on Essential Chillers 1IC,12C and Train C ESF Pump Rm sn AHU on Data Sheet (-5).
2 2,
Valve out the. Train C Radwaste Control Room AHU by closing valves CH00722 and CH0723.
O 3.
Set flow on Essential Chillers llc (CH0307),12c.(CH0607) and record flows on Data jg Sheet (-5).**
g 4.
Set flow on Train C ESF Pump Rm AHU (CH0768) and record on Data Sheet (-5).
5.
Repeat steps 3 & 4 above as needed to set all flows in required ranges.
l 6.
Take AP readings on remaining components for comparison only (no acceptance criteria). Also take AP readings on Essential Chillers llc,12C. Record results in Data Sheet (-5).
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1 300 Ton Essential Chiller Bypass IPEP07-CII-0002 i
i Modification Verification Test Rev.O Page 30 of 45 ADDENDUM 4 PSYCHROMETRIC CHART
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(Page1ofI)
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300 Ton Essential Chiller Bynass IPEP07-Cll-0002 Modification Verificgien Test Rev.0
.i Page 31 of 45 -
l I
ADDENDUM 5 DATA LOGGER SETUP l
(Page 1 of 1)
+
CIIANNEL DESCRIPTION.
l
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C0 300 Ton Chiller Chilled Water Inlet Temperature l
(First chilled water train tested)
C1 300 Ton Chiller Chilled Water Outlet Temperature I
(First chilled water train tested)
C2 300 Ton Chiller ECW Inlet Temperature (First chilled water train tested) i C3 300 Ton Chiller ECW Outlet Temperature (First chilled water train tested)
~
C5 300 Ton Chiller Compressor Discharge Temperature (First chilled water train tested)
C6 300 Ton Cid!!er Chilled Water Inlet Temperature (Second chilled water trdin tested) (Test #3 only)
(
C7 300 Ton Chiller Chilled Water Outlet Temperature (Second chilled water train tested) (Test #3 only)
C8 300 Ton Chiller Compressor Discharge Temperature (Second chilled water train tested) (Test #3 only)
C20 300 Ton Chiller Evaporator Pressure (First chilled water train tested)
C21 300 Ton Chiller Condenser Pressure (First chilled water train tested)
C22 300 Ton Chiller Compressor Oil Pressure l
(First chilled water train tested) h l
i
i 300 Ton Essential Chiller Bypass IPEP07-Cli-0002 Modification Verification Test Rev, 0
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Page 32 of 45 DATA PACKAGE COVER SHEET 1 PEP 07-CH-0002-1 (Page1of1) i NOTE For this Data Package to be complete, the Data Sheet (-2), (.6) and any two of Data Sheets (-3),
(-4), (-5) must be attached.
EQUIPMENT NUMBER (S):
TECil SPEC REFERENCE (S):
TEST INTERVAL:
UNIT NUMBER:
WORK Post Modification Test AUTHORIZATION NO.:
3.7.14 Once for MOD 93049 1
REASON FOR TEST: Post Modification Test for MOD 93049 PERMISSION TO START THE TEST SilIFT SUPERVISOR TIME DATE.
M&TE REMOVED AND SHIFT I-SUPERVISOR INFORMED OF
~IEST COMPLETION:
TEST COORDINATOR TIME DATE TEST RESULTS:
[] ACCEPTABLE (ALL ACCEPTANCE CRITERIA MET).
[] UNACCEPTABLE (ANY ACCEPTANCE CRITERIA NOT MET)
REVIEW FOR COMPLETENESS:
TEST COORDINATOR TIME DATE TEST RESULTS:
[ ] ACCEPTABLE (ALL ACCEPTANCE CRITERIA MET) '
[ ] UNACCEPTABLE (ANY ACCEPTANCE CRITERIA NOT MET) i REVIEW FOR COMPLETENESS:
)
DESIGN ENGINEERING ENGINEER TIME DATE REMARKS:
5 1
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This FORM, when completed, shall be retained for the life of the plant.
)
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l 300 Ton Essential Chiller Bypass IPEP07-Cil.0002 J
Modification Verification Test Rev.O g.
Page 33 of 45 -
j g O
TEST VERIFICATION DATA SIIEET h?
IPEP07-CH-0002-2 ld 1 (Page 1 of 9)
G 4.6 M&TE RECORD DESCRIPTION STPEGS 1.D. NO.
CAllBRATION DUE DATE PRESSURE TRANSMITTER O-50 psia PRESSURE TRANSMITTER O-50 psia PRESSURE TRANSMITTER 0-50 psig RTD,32-100 'F RTD,32-100 'F RTD.32-100 *F RTD,32-100 'F RTD,32-100 'F
(
RTD,32-100 'F RTD 32-230*F RTD 32-230*F DIFFEREtmAL PRESSURE GAUGE, 0-30'WC (or 0-50"WC)
DIFFERENTIAL PRESSURE GAUGE, 0-30"WC (or 0-50"WC)
SLING PSYCHROMETER O
DATA LOGGER 8$
- f O
DIFFERENTIAL PRESS. GAUGE, f
C 030' WC ( or 0-50" WC )
g g
'k This FORM, when completed, shall be retained for the life of the plant.
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7 300 Ton Essential Chiller Bynass IPEP07-CII-0002
- Modification Verification Teg Rev.0 i
Page 34 of 45 -
'I Q o O TEST VERIFICATION DATA SIIEET hY I
IPEP07-CII-0002-2
% 5 l
(Page 2 of 9)
Q PERFORMED BY VERIFIED BY INITIAUDATE INIT1AllDATE.
4.8 Pretest briefog conducted TEST 1 6.1.1 Notify Shift Supervisor that test one is commencing and train will be inoperable 6.1.2 Verify prerequisites comptete..
. ]
6.1.4.1 0-50 psia gauge installed on Condenser Service Valve l
6.1.4.1.1 Condenser Service Isolation Valve opened l
6,1.4.2 0-50 psia gauge installed on l
Evaporator Service Valve l
(
6.1.4.2.1 Evaporator Service Isolation Valve l
opened l
6.1 A.3 RTD at chiller Condenser EWinlet
)
thermowell EW-T1-6904A (6905A)
(6906A) 6.1.4.4 RTD at Chiller Condenser EW outlet thermowell EWT16904B (69058),
j 69068) j G.1.4.5 RTD at Chiller Evaporator CH inlet thermowell CH-119502 (9508) (9514) for chiller tested in Test #1. Existing Temperature Indicators removed.
6.1.4.5 RTD at Chiller Evaporatorinlet thermowell CH-TI-9502 (9508) (9514) for the second chiller tested (Test #3).
Existing Temperature Indicator removed.
l 9
-r,
-r
300 Ton Essential Cidlice livn.n3 II'El*07-Cll 0002 ModiGcation veriGcation Tesi Itev. O k
w%
Pacc 35 of 15 o
O TEST VERIFICATION DATA SliEET h?
I PEP 07-CH-0002,7 g
(Page 3 of 9)
PERFORMEO BY VERIFIEO OY STEP INITIAtJDATE INITIAt>DAT E
.L
_1 f
I -
l G.I.4.6 RTO st Chirier Evaporator CH outlet tacamowett CH.Tl 9502A (950BA)
(5514A) for cistter tested in Test *1 Existing Temperature Indkators removed.
G.1.4.6 RTO at Cisner Evaporator CH outlet thermowen CH-Tl 9502A (9508A)
(9514A) for second dduer tested (Test #3). Exis6ng Temperature Indicators removed.
6.1.4.7 RTO at Ctstter Compressor Discharge Temperature thermowen for cid!!er train tested in Test #1 G.1.4.7 RTO at Cidner Compressor Discharge Temperature thermowen for ctduer tra' tested in Test *3.
e (E
6.O.$
O-50 Ps'ag Gauge instaued on oII pressure gauge rnardfold G.1.5.9 O;t pressure gauge isotat'e valve opened 6.1.6 lastruments connected to Data Logger.
6.1.7 0-30 or 0-50 WC diff pressure gauge instaned on chiner train tested in Test #1
,J G.1.7.1 0-30 or O'50 WC gauge instrument
[a
%[
d isea6en va,ves a -,c a a.,<.
s for t k ir*h l><***1 1ts t<A **d (*! + L<-
ff _ w.
R d.:ller f b< l<sl<d 1 Tes} d5
=,.,--m--
y n r.
G.1.8 Contronotron flow meter instatted on.
ESF Pump Room AHU outlet piping on train being tested.
6.1.8.1 0-30* or 0-50 WC diff pressure gauge instaned on / Sob chili <r //.o
.l elamf af t<,.h b<:n f<slsl er G.,froll.ften l>y ihs flaa eIs..f a
I
- 4. t.8.1. I o.30 or O 50~ WC gauge instrument (Qi@,MQ74}
0' isolation valves opencJ o : ver'f.J,eu g,gggg;;gJg, c r
f.e fran b<:nz f uVA (ls.;^ C.
l A[
N
,< p -.us 1. u.,..x.
an
~__ wm. ~%
G.1.9.4 Chiner outlet temperature seset to fMW 48*F.
b---
300 Ton Essential Chiller Bvnass I PEP 07-CH-0002 Modification Verification T.eg Rev.O Page 36 of 45
$w 8%
TEST VERIFICATION DATA SHEET
[b bl4 IPEP07-CH-0002-2 o
(Page 4 of 9) l PERFORMED BY VERIFIED BY INITIAUDATE INITIAt1DATE 6.1.11 Verify and record ECW Pump discharge temperature is s 69'F.
ECW temp
'F.
6.1.20 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> hold start time recorded.
Start Time:
6.1.21 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> hold time completion time recorded Completion Time 6.1.22 Verify and record ECW Pump discharge temperature is s 69'F.
ECW temp
'F.
(
6.1.27 300 Ton Chiller Evaporator AP recorded AP in. W C 6.1.28 300 Ton Chitler condenser flow recorded Condenser flow GPM 6.1.31 300 To. Chiller Evaporator AP recorded AP in. WC 6.1.32 300 Ton Chiilcr condenser fkiw recorded Condenser flow GPM
====:r e I
i
~
l
a
?
I 300 Ton Essential Chiller Bypass I PEP 07-CII-0002 Modification Verification Test Rev.0 Page 37 of 45 yQ o o TEST VERIFICATION DATA SHEET
.gl[(w 8
lPEP07-CH-0002-2 (Page 5 of 9)
- t PERFORMED BY VERIFIED BY -
STEP INITIAUDATE INITIAUDATE TEST 2 6.2.1 Chilled Water outlet and ECW supply temperatures recorded.
ECW Supply Temp
'F.
Chi!!ed Water Outlet Temp
'F 62.7 Chitled Water outlet and ECW Pump Discharge temperatures recorded.
ECW Temp
'F,.
Chilled Water Outlet Temp ~'
'F
[
TEST 3 i
6.3.1 Shift Supervisor notified Test #3 will commence and a second chilled water
(,
train will be inoperable.
6.3.2.4 300 Ton Chiller outlet temp for second p
train reset to 48'F.
p 6.3.3 Controllotron removed from the ESF M
Pump Room AHU in the frain tested in I Q Test #1.
Y4 g
l 6.3.7 Record and verify ECW Pump Discharge Temperature is :s 69'F k
ECW Temp.
'F 6.3.17 Both 300 Ton Chillers have been in operation 2: 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
6.320 300 Ton Essential Chiller #
chilled water flow'(1st Train) (10 min data)
AP in. W C 6.3.20 300 Ton Essential Chiller #
chi!!cd water flow (2nd Train) (10 min data)
AP in. W C
,m---
~ - -
1 m
j i
300 Ton Ese!.stial_ Chiller Bvoass IPEP07-CH-0002
/
Modification Voau%n Test Rev.O m
Page 38 of 45 3 Q ho TEST VERIFICATION DATA SHEET
- ?
h 1 1 PEP 07-CH-0002-2 (Page 6 of 9)
.g PERFORMED BY VERIFIED BY l
INITIAtJDATE INITIAUDATE l
6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. W C (1st Train) (20 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. W C (2nd Train) (20 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. W C (1st Train) (30 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. WC t
(2nd Train) (30 min data) 6.3.20 300 Ton Essential Chirer #
chilled
(,
water flow AP in. WC i
(1st Train) (40 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. W C i
(2nd Train) (40 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. WC i
(1st Train) (50 min data) 4 6.3.20 300 Ton Essential Chiller #
chi!!ed water flow AP in. WC (2nd Train) (50 min data) 6.3.20 300 Ton Essential Chiller #__
chilled water flow AP in. W C (1st Train) (60 min data) 6.3.20 300 Ton Essential Chiller #
chilled water flow AP in. WC (2nd Train) (60 min data) 6.3.21.1 Record outside air
'F dry bulb temperature and wet bulb temperature
'F 6.3.21.2 Record outside air relative humidity
% Rel. Hum. (See Addendum 4 l
for Psychrometric Chart) j 6.3.21.3 Record Approximate Prerotation Valve Position (PRV)(1st Train Tested)
Chiller # '
__PRV
%open 6.3.21.3 Record Approximate Prerotation Valve Position (PRV) (2nd Train Tested)
Chiiter #
PRV
%open i
1
1 300 Ton Essential Chiller Bypass I PEP 07-CH-0002 Modification Verification Test Rev.O g
Page 39 of 45 gm O D TEST VERIFICATION DATA SHEET hh
$lE 1 PEP 07-CH-0002-2 (Page 7 of 9) g PERFORMED BY VERIFIED BY STEP INITIAUDATE INITIAt/DATE 6.3.21.4 Record Approximate Hot Gas Bypass (HGBP) Position. (1st Train Tested)
Chiller #
HGBP
%open 6.3.21.4 Record Approximate Hot Gas Bypass (HGBP) Position. (2nd Train Tested)
Chiller #
HGBP
%open 6
6.3.21.5 Record 300 Ton Chiller amperage (1st Train Tested)
Chiller #
Amperage AMPS 6.3.21.5 Record 300 Ton Chi!!er amperage (2nd Train Tested)
Chiller #
Amperage AMPS 6.3.23 Verify operations restoration activities are complete and record train being
(
restored.
Train 6.3.24 Shift Supervisor notified second train of chi!!er water tested is restored and the train may be retumed to service.
6.3.25 Condenser Service isolation Valve closed.
l 6.3.26 Evaporator Service isolation Valve l
closed.
l j
I 6.3.28.3-Oil pressure gaoge and test Tee i
l remove 6.3.28.7 Oii pressura gauge Service isolation l
Valve open l
6.3.29 Condenser pressure l
indicatorf.ransducer removed.
l 6.3.29 Evaporator Pressure l
Indicator / transducer removed.
l 6.3.29 RTD at Condenser ECW inlet removed.
l 6.3.29 RTD at Condenser ECW outlet I
removed.
I
.I l
i
}
l l
300 Ton Essential Chiller Bypass I PEP 07-CH-0002 Modification Verification Test Rev.O g
)
g*
Page 40 of 45 o? O TEST VERIFICATION DATA SHEET IE
- o. g^
lPEP07-Cl1-0002-2 (Page 8 of 9) l PERFCRMED BY VERIFIED BY STEP INITIAUDATE INITIA11DATE w
l1 gayg RTD at evaporator CH inlet removed and permanent temperature indicator reinstalled for the first chiller O.
tested in Test #1.
G.3.29 GTD at evaporator CH inlet removed and permanent temperature indicator reinstaDed for the second chiller tested in Test #3.
6.329 RTD at evaporator CH outlet remoced and permanent temperature ind'cator reinstaDed for the first chiller tested in Test #1.
(
G.3.29 RTD at evaporator CH outlet removed
\\
and permanent temperature ind'cator reinstaRed for the second chi!!cr tested in Test #3.
G.329 RTD at Chiller Compressor discharge thermowen removed for the first chiller tested in Test #1.
6.2 29 RTD at Chi!!er, Compressor discharge thermowc5 removed for the second chi!!cr tested in Tc;st #3.
G.3.29 0-30" or 0-50 Diff Pressure Water Gauge removed for the first chiller tested in Test #1.
G.3.29 0-30* or 0-50" Diff Pressure Water Gauge removed for the second chiller tested in Test #3.
G.329 Controllotron Flow meter removed, train tested in Test #3.
G.3.29 O W.c 0 So*.D:f( Prus"rc. skbe' f
sma. re wulf.c iso r. cl.:stec Q
p.s.Jan f.Ip.:.b.:3 ulu!.e s
i GkIlok by4l > ek f FE 1MS T
re m ad, y
nwwwwsw.a G.4.1 Verify train tested was not retumed to bs"<5e746gmifiiEiE
(-
service and recorded tested chiller.
=
==
\\,,
TagfTPNS.
$$7d"%2rLC l
1 4
- n...
f 300 Ton Essential Chiller Bypass IPEP07-Cll.0002 Modification Verification Test Rev.O Page 41 of 45
@Q 8o TEST VERIFICATION DATA SHEET
$9 glE 1 PEP 07-CII-0002-2 (Page 9 of 9)
{
i PERFORMED BY VERIFIED BY l
8 INITIAUDATE INITIAUDATE I-1 TEST 4 l
6.4.2 Record and verify ECW Pump Discharge Temperature is s 69'F ECW temp.
- F 6.4.9 Start of 24 Holding Period f
Start Time 6.4.9 Completion of 24 Holding Period Completion Tirne t
6.4.16.1 150 Ton Chiller Condenser Pressure 1
(5 min data) osig/in Hg l
4 6.4.162 150 Ton Chiller Evaporator pressure l
(5 min data) in Hg 6.4.16.3 150 Ton Chmer Oil Pressure
]
-(,
(5 min data) osig 6.4.16.4 150 Ton Chiller Chilled Water inlet Temperature
]
(5 min data)
- F "l
6.4.16.5 150 Ton Chiller Chilled Water Outlet Temperaturo
]
(5 min data)
- F 6.4.16.1 150 Ton Chiller Condenser Pressure (30 min data) usiglin Hg 6.4.16.2 150 Ton Chiller Evaporator Pressure
- 1 (30 min data) in Hg 6.4.16.3 150 Ton Chiner Oil Pressure (30 rnin data) osig 6.4.16.4 150 Ton Chiller Chined Water inlet Temperature (30 min data)
- F.
6.4.16.5 150 Ton Chi!!er Chilled Water Outlet Temperature (30 min data)
- F.
6.4.17 Shift Supervisor notified testing is complete.
6.4.18 Verify operations restoration activities are complete.
/
6.5 Data logger tape attached j
a
300 Ton Essential Chiller Bypass I PEP 07-Cli-0002 hiodification Verification Test Rev.O Page 42 of 45 A TRAIN Cil BALANCING DATA SHEET 1 PEP 07-Cli-0002-3 (Page 1 of 1)
COMPONENT DESCRIPTION AS FOUND VALUE FINAL AS LEFT AS LEFT CHANGED NUMBER VALUE VALVE POSITION 3V111VCH001 (11A Chi!!er)
Ap in WC Ap in WC CH-0289 Flow
- GPM Flow
- GPM Position 3V111VCH004 (12A Chiller) op in WC Ap in WC CH-0589 Flow "
GPM Flow "
GPM Position 3V111VHX026 (Elect Pen CC Space) $l# E i4 PSID $3MNEM$$
3V111VHX016 (Cont Rm CC)
U ' '. ' 5 l~Is PSID Ek f W~? " ? l d 3V111VHX007 (EAD Mn Area CC SNU o ' -
1NAC 2 A
D
- R L'.-M PSID hh?
Y:Is
%N'i
- O E 3V111VHXOO7 (EAB Mn Area CC)
MS
~W PSID B
' 'iM MM
-' NS 3V101VAH012 (Rm Mu AHU WTR
{7f jQ PSID
$f
[.f6}@
AHU) i t,a n
3V101VAH019 (Ess Chir AHU)
.[.
4
[' ((j PS!D (a
y
.--...,..,e y.....m........._.y77p.
q 3V101VAH008 (BA Pump Rm AHU) f,........ f l
PSID i '
7 i
3V101VAH010 (Rom 033 CVCS AHU) l PSID h~1:E'
. 'l= 4 3
{
3V101VAH016 (Radwaste CR CC)
N?
Y $*$l @$$lMM[d8 0
3V101VAH022 (Rad Montr. Rm AHU) ?M PSID I 3V121VtiX012 (ESF Pump Rm CC)
GPM
'GPM CH-0735 N
Valve Position M
3V121VAH012 (FHB IVC AHU)
$$$$$@$$1 PSID @$1fys$$$N@
s.
3V111VCH001 11A Chiller 3$ 8 5 5 $ M I8j @ $
PSID $$5@M$MMM 3V111VCH004 12A Chiller Mij@@M$jfd PSID INI Ni,%$$$$@ Q Flow for essential chiller 11A can be determined from the following:
FLOW (GPM) - 68.2 Ja(inWC)
Flow for essential chi!!er 12A can be determined from the following:
FLOW (GPM) = 137.2
- Ja(inWC)
(.
4 I
300 Ton Essential Chiller Bynass 11'EP07-Cll-0002 Modification Verification Test Rev.0
(
Page 43 of 45 B TRAIN CH BALANCING DATA SHEET g
i PEP 07-CH-0002-4
?
(Page I of I) d 0
COMPONENT DESCRIPTION AS FOUND VALUE FINAL AS LEFT AS LEFT CHANGE g'
NUMBER VALLIE VALVE POSITION s
i.
b 3V111VCil002 (110 Chiller)
Ap in WC Ap in WC CH-0298 Flow
- GPM Flow
- GPM Valve Position 3V111VCH005 (128 Chiner) ap in WC Ap in WC CH-0598 k
Flow ~
GPM Flow "
GPM Valve Position 3V111VHX025 (Elect Pen Space CC) I8/$MYMN66I4 PSID Ed@((R$!@@@l-3V111VHX017 (Cont Rm CC) fMDd$$N$f$EEh PSID $[EN$M3i!d!!MI 3V111VHX010A (EAB Mn Area CC) 8.25@M.$@$MC PSID $$$$$$Y8$h P 1378hk$l$$d@@
PSID IM D $ $i3 @ $ M
[
3V111VHX0108 (EAB Mn Area CC) 3V101VAH013 FNu Pap Rm i
PSID
}
3V101VAH020 (Essen Chlr AHU)
)$$($d[MMfM PSID r)$Tjy(@gyJ@@
3V101VAH011 (Rm 33 CVCS AHU) $@d SlM[$
PSID @@$$M@ME3 0 1
3V101VAH014 (Rm 226 CVCS AHU) MMMNMM PSID $M@Mi$jd 3V121VAH010 (SFP Pump AHU)
MMM@Edd3fd}
PSID N%MA7/@Pi!@@
N 3V121VitX013 (ESF Pump Rm CC)
GPM GPM CH-0752
' [h Valve Position 3V121VAH013 (FHB IVC AHU)
$d$$$$@jMM PSID M$d$$[M7?dM$ %
3V111VCH002 118 Chiner dip 2MEs%E[$$7ti[I PSID N@(9$$%@@ {
3V111VCH005 128 Chiller
@ M ih! @ $f M R PSID i 1MNkM@NI h Flow for essential chiner 110 can be determined from the following:
FLOW (GPM) = 68.2
- Jh(inWC)
Flow for essential chiller 128 can be determined from the following:
FLOW (GPM) = 137.2 < /b(inWC)
.TOO Ton lisscnii:il Chiller livmsy I PEP 07-Cll-0002 Modification Verification Test Rev.O Page 44 of 45 C TRAIN Cil 13ALANCING DATA SIIEl?T I PEP 07-CH-0002-5 (PageIof1) l COMPONENT I DESCRIPTION AS FOUND VALUE FINAL AS LEFT AS LEFT CHANGE l
NUMBER l
VALUE VALVE POSITION -
3V111VCH003 (11C Chitler)
Ap in WC ap in WC CH-0307 Flow -
GPM Flow -
GPM Valve 9
Position y
3V111VCH006 (12C Chater) op in WC ap in WC CH-0607 E
Flow "
GPM Flow ~
GPM Valve
(
Position s
3 Viol VAH009 (BA Pump Rm AHU)
Mf/$dMdM$$
PSID $$NEENTy 3V111VHX018 (Cont Rm CC)
MO[
PSID [2f[k I ~~
7 j
3V111VHX013A (EA8 Mn Area CC)
Ekvk.
L h6$}[
PSID k--
- 3V111VHX0138 (EAS Mn Area CC) fh?6[ Y7M;3 PSID M PSID N I
3V101VAH021 (Essen Chir AHU)
{j.
' '. [..,],,,,
4 3V101VAH007 (Rm 44 CVCS AHU) lj.; 1
.j PSID g
g n
(
'?
PSID 30
=. = =...,
..:.xu n--
as.
..._._.i...... hddNMM E
3V101VAH018 (Radwaste CR AHU)
C.
p y
3V101VAH023 (Rad Montr. Rm AHU)
- 1....
- 1 PSID si-3V111VHX024 (Elect Pen Sp CC)
~ ($%[-
6.:N;.
PSID h$M...
..Ik j 3V121VAH014 (FHB IVC AHU)
Ikk M
PSID kpeshi4$
!%MMMhh$
PSID h3i!h Mf 3V121VilX 014 (ESF Pump Rm CC)
GPM GPM CH-0768 -
Valve Position G
3V111VCH003 11C Chirier MMdk}@kdfh PSID $$hkbNhMk s
[P[hhkhhfhEk((M NhhkkIh[fE 3V111VCH00G 12C Chiller PSID k
Fknv for Essential Chaler 11C can be determined from the fotlowing:
FLOW (GPM) = 68.2 - Jb(iniVC)
-l Flow for essential chiner 12C can be determined from the following' l
FLOW (GPM) = 131.2. Js(iniVC)
(
....,,,... ~.......
300 Ton Essential Chiller Bypass IPEP07-CH.0002 Modification Verification Test Rev.O Page 45 of 45
,w CHRONOLOGICAL TEST LOG DATA SHEET (TYPICAL) y Ij IPEP07-CH-0002-6 '
y (Page1of1) g Chronotonical Test Lon TIME LOG ENTRY-J e
i R
9 v
e.
e, o
+
y n..
n s
Plant Procedures OPGP03-ZA-0002 h
Rev.23 Page 55 of 61
\\
EIELD CHANGE FORM OPGP03-ZA-0002-4 (Page1of1)
N/A ANY FIELDS NOT NEELLD FC NO.
94-Ar,/ 4g
'5 Dj NO
[] YES One-Time-Only FC?
@ NO
[] YES Typed prior to the Section B approval?
l I
e>
. we SECTION A-DESCRIPTION; s s..
Procedure No. //gjo ;r- /> #_ oog2 Rev No. o g
l Procedufe Title
.500 & Essa.,ddl'Alfer Evwv flerf,fe_ Aw Vedd'u1% Yist SAFETY CLASSIFICATION:
SAFETY RELATED*
O NON-SAFETY RELATED QUALilY CLASSIFICATION:
QUALITY-RELATED NON QUALITY-RELATED APPROVAL CLASSIFICATION:
STATION O DEPARTMENT 9f.q Description of Change (s): _ f..c,ro m /, J. - 1 u?,.b /., MWr_ m Mr 9#-oo3p4t.4/94
/
94-co46, /.94-oo# iA ds Fd.. na.,4 nRh1LL dea:dae wW An M
,ob u rum 6e sw a2 $ /Nr. CJee /Adf'.' nd f aGuederres. MUk An a M.
' eason for' Change (s). h/n.-oes ertaLAs de e)~r$'L 'fe's Itzt.) J a e
R 2nna '
i onorJs. mUma +Uf,. Yt%t'aL.y Ac k :na ~4' re 's.
)
'- M 1 Fc L,;tt n far fe's 44-r,oxs. 94-oo43. i.94'-eo14. i'es-oo48 1
This is th88 a ainst this current revision, other than one-time-only.
O Affected/ Additional Pages SA,lf,lS,/9,20,Mo,28,29,3},3C35,3?o,37,38,39AO,4!$.45 Prepared by (Signature)
Mm 4 JmF Date
< //z/S9
-[.
Prepared by (Print)
' F 4/.,5 u u r l
z i
- j ff JECTION B APPROVAL c::
Recornmend L f///gW-Date /-/2 -9V w
Approval
/~ [ Technical Reviewer 1
Approved b
Date
/~/.3-
' ~ ' '
1 o
Authormed Individual W
C=
- An SRO signature is required for Safety-Related Procedures.
O YES is this FC a minor change to correct an obvious typographical, editorial or drafting error? If YES. provide explanationfjustification in the
- Reason for
(
Change" above and the LCR Form and Technical and Surveillance Procedure Review Checidists are not required.
I SECTIONLCEEINAL REVIEW lANDl APPROVAL!OFJTYPED COPY -
4 NOTE: Cognizant DM Review SHAlt. be completed within 21 calendar days of effective date.
Satisfactory O NO O YES Station Problem Report No.
Revision Required O NO O YES Tracking No:
l f'
is a change required to the other unit's and/or trains
- procedures?
O NO O YES O N/A Tracking No.(s) e N_? %
Training required O NO O YES
,f
'\\
M 9
mugm 1
" Reviewed by Date 4
- 21 TP I
! j}
Cognizant DM
- Approved by Date i
! M 13 99^'
Plant Manager or Cog DM 0 i G/C0 j l/
(
u COPY jr
)
\\
" This signature not required for Department Procedures.
,;g
- Plant Manager signature required for Station Procedures, Wn
,y Cognizant DM signature required for Department Procedures.
%hMg:/
This FORM, when comp!cted. SHAtt. be retained for the life of the plant.
\\
4 b
t Plant Procedures OPGP03-ZA-0002 Rev.23 S
\\
Page 55 of 61 FIELD CHANGE FORM OPGP03-ZA-0002-4 (Page1of1) md-j N/ ANY FIELDS NOT NEEDED FC NO.
[ NO
[] YES One-Time-Only FC7
[,rNO
[] YES Typed prior to the Section B approval?
&wgs/#PMSECTI.O N !AM DESCRIP, TION!haPRdvX @A k Procedure No. JM/b7<fl-coo 2,
. Rev No.
,O Procedure Title 300 'T~mt fue.dn] f,lalk.* 6'/t%M fisk;Rhh'.,s L'RO,r %
SAF CLASSIFICAT10N:
SAFETY RELATED*
NON-SAFETY RELATED QUALITY CLASSIFICATION:
QUALITY-RELATED 0 NON OUALITY-RELATED APPROVAL CLASSIFICATION:
STATION
[ DEPARTMENT Des o h ge(s): /M racM]Jir.t
&lm
.,.4 su
-/8,, 15p -fL AfrM aire,h M A b b A,,o l
Reason for Change (s):
This is the _[ FC against this current revision other than one-time-only.
(
~
Affected/ Additional Pages
$~, 9, //J,.35M fD g
Prepared by (Signature)
' AN /##/64 Date / h-M Prepared by { Print)
/As,-J,(fJfnoWff*
n., 5 ~
~ ' %< MSEC 710NA * ~APPROVALn W^'r'*
D Recommer,d
&k 4 kJ/
Date ///, /94 C
Approval ichn' I Rdviewer Approved N,
/Ms~v Date /
NV
[
huthorized Individual C
L' 8
- An SRO signature is required for Safety-Related Procedures.
CE:
NO O YES is this FC a minor change to correct an obvious typographical, editorial or drafting error? If YES, provide explanation / justification in the " Reason for Change" above and the LCR Form and Technical and Survei!!ance Procedure Review Chcc. ists are not rvw1uired.
_J Mm 6SECTIONICMEINAlfREVIEW/ANSMPROVAliOFaTYRED;COPXe NOTE: Cognizant DM Review SHAR be completed within 21 calendar days of effective date.
Satisfactory O NO O YES Station Problem Report No.
l Revision Required O NO O YES Tracking No:
Is a change required to the other unit's and/or trains' procedures?
5h O NO O YES O N/A Tracking No.(s) f
' ~%,g ).
Training required O NO O YES j?
V11 L'-, _i s
g!h
" Reviewed by Date//
I Cognizant DM (i
I JAN 13 M94
- Approved by Dateh W _ _.: /
Plant Manager or Cog DM
\\;
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//
.,% /
" This signature not required for Department Procedures.
', 4Jrg rgKf
- Plant Manager signature required for Station Procedures,
%==:7 Cognizant DM signature required for Department Procedures.
i This FORM, when completed, SHALL be retained for the life of the plant.
I
Plant Procedures OPGP03-ZA-0002 O
Rev.23 Page 55 of 61 l
FIELD CHANGE FORM OPGP03-ZA-0002-4 (Page1of1)
N/A ANY FIELDS NOT NEEDED
- FC NO.
9'/-00'/S
[t.y@iO O
[] YES One-Time-Only FC7
[t.}4
[] YES Typed prior to the Section B approval?
2SECTION A.- DESCRIPTION d d 7-C @ @ 2, Rev No.
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Procedure No. //2 O Procedure Title E% Aw,4A/ Of,7///- MJmer Mhhbh
//b1Rcnlien ~ 7W
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SAFETY CLASS!FIC ATION:
[ AFETY RELATED*
NON-SAFETY RELATED QUALITY CLASSIFICATION:
w OUALITY-RELATED 0 NON QUALITY-RELATED APPROVAL CLASSIFICATION:
STATION DEPARTMENT Despription of Chanpe(s): /durs Adh dun, 1 //tt tj,'//s) smL.fA,w M m es
~)o Ern -10//*tA Reason for Change /s); MJ,//,r._r -.[rr //> //C elfYu e'5 E m /m aus' S //>
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Affected/Adddional Pages g6
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' Z/A /%#am
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Date r/se/fr/
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Approved bc St/taus Date / -/0 - f'/
.5 Authorized Individual
- An SRO signature is required for Safety-Related Procedures.
Ls ?
p[NO O YES is this FC a minor change to correct an obvious typographical, editorial or c:::
drafting error? If YES, provide explanation / justification in the " Reason for Change" above and the LCR Form and Technical and Surveillance Procedure Review Checklists are not required.
-SECTION CsEINAllREVIEW'AND APPROVAL OFc'iYPED COPY -
NOTE: Cognizant DM Review SHAlt. be completed within 21 calendar days of effective date.
Satisfactory 0 NO [TTVES Station Problem Report No.
Revision Required GFNO O YES Tracking No:
l is a change required to the other unit's and/or trains' procedures?
gf9"6G' '%
O NO O YES GT'N/A Tracking No.(s)
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Training required (D'NO O YES y,
pg I
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.. Reviewed by
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Date Cogndant DM JAN 13 1994 i
- Approved by Date $
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i ff Plant Manager or Cog DM t
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N.=.=>gf
" This signature not required for Department Procedures.
N gg g j
- Plant Manager signature required for Station Procedures,
. Cognizant DM signature required for Department Procedures.
This FORM, when completed SHAlt. be retained for the life of the plant.
.i Plant Procedures OPGP03-7.A-0002 4
Rev.23-
[
Page 55 of 61 FIEl.D CHANGE FORM OPGP03 ZA-0002-4 (Page 1 of I) 4 00 %
N/A NY FIELDS NOT NEEDED FC NO.
4p
[ ] YES One-Time-Only FC7
[ $O
[] YES Typed prior to the Section B approval?
[t}
SECTION A-DESCRIPTION Procedure No. /MJ-/7//-/yW2,.
. Rev No. Of Procepure {Tjtli Rtn TEA / &v.ba/A1/ Odifbr LLAcc A4/ilth'ns k'e>,
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SAFE:TY CLASSIFICATION:
[ AFETY RELATED*
NON-SAFETY RELATED QUALITY CLASSIFICATION:
QUALITY-RELATED NON QUALITY-RELATED APPROVAL CLASSIFICATION: O STATION b DEPARTMENT Description of Change (s): Af-res,-r 34,erwotA6ht// pant-s. Avd - c.kw,. fb.
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>T. NO O YES is this FC a minor change to correct an obvious typographical, editorial or i IL:-
drafting error? If YES, provide explanation / justification in the Reason for Change" above and the LCR Form and Technical and Surveillance Procedure Review Checklists are not required.
SECTION C'- FINAL REVIEW:AND> APPROVAL OF TYPED COPY NOTE: Cognizant DM eview SHALL be completed within 21 calendar days of effective date.
Satisfactory 0 NO ES Station Problem Report No.
Revision Required O O YES Tracking No:
l 1s a change required to the other unit's and/or trains
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/pyg:r.g O NO O YES S N/A Tracking No.(s)
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This FORM, when completed, SHAll be retained for the life of the plant.
Plant Procedures OPGP03-7_.A. coo 2
+
f Rev.23 l
M Page 55 of 61 0
FIELD CHANGE FORM OPGP03-ZA-0002-4 (Page1ofI)
N/A ANY FIELDS NOT NEEDED FC NO.
94-N45 0() NO
{] YES One-Time-Only FC?
QJ NO
[] YES Typed prior to the Section B appro' al?
v SECTION A-DESCRIPTION
]
Procedure No.
I PEPO 4 -C H-oco7_
Rev No. O Procedure Titic 300 % Eva.J.J cki/ler % Pass JAediHeaf'c,~ tier 'h'edw pg
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SAFETY CLASSIFICATION:
SAFETY REf ATED*
NON-SAFEW RELATED QUALITY CLASSIFICATION:
QUALITY-RELATED NON OUALITY-RELATED APPROVAL CLASSIFICATION: O STATION DEPARTMENT o,,
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Description of Change (s): Rwls._ den 6. /. /9 per ec c, add Dwdr'n-s /o.cl.we Ecv R a IM*8 Yod L ).rdQthe +L 4Ltl Th'LoeL". clkah ch 'S. I +/!J- %sti,;ll be-su ' Jd ;F dhe ;r k.sf kk Mis edhe A.,. Ifw Kswhf PL4fv Jebs. Cemil frmmy k. fern.
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Reason for Change'(s)! ~ d<Elel,A, ei / Q w f..sf/[ q nsr"
p This is the hC against this current revision, other than one-time-only.
Affected/Additioaal Pages /,,//,20,)9l.,28,3M4,38,.$t*,3/,,37,36,39 40, f 4/
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Prepared by (Signature) g<, h / d. J' " 'N N Date / ///M-sc Prepared by (Print)
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- An SRO signature is required for Safety-Related Procedures.
O DR(.NO O YES is this FC a minor change to correct an obvious typographical, editorial or drafting error? If YES, provide explanation / justification in the " Reason for Change
- above and the LCR Form and Technical and Surveillance Procedure Review Checklists are not required.
SECTION C - FINAL REVIEW AND APPROVAL OF TYPED COPY NOTE: Cognizant DJMeview SHAlt, be completed within 21 calendar days of effective date.
Satisfactory O NO a YES Station Problem Report No.
l Revision Required (D'No O YES Tracking No:
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Is a change requi the other unit's and/or trains
- procedures?
O NO O YES Tracking No.(s)
Training required O O YES y,
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- Approved by i
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- Plant Manager signature required for Station Procedures,
" This signature not required for Department Procedures.
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Cognizant DM signature required for Department Procedures.
This FORM, when completed, SHAlt. be retained for the life of the plant.
.- l
J i
Plant Procedures OPGP03-ZA-0002 b
Rev.23 4
Page 55 of 61 9
s i
FIELD CHANGE FORM OPGP03-ZA-0002-4 (Page 1 of 1)
N/A ANY FIELDS NOT NEEDED FC NO.
O3b N NO
[] YES One-Time-Only FC7 b( NO
[] YES Typed prict to the Swtion B approval?
j SECTION A - DESCRIPTION. -
Procedure No.
//E/o7-cA m o E Rev No. O Procedure Title 3co 7% Eue.ekJ Lich-sS,/./wa 4/acPAme. s RrJuzA. T,41 SAFETY CLASSIFICATION:
SAFETY RELATED*
NON-SAFETY RELATED QUALITY CLASSIFICATION:
[OUALITY-RELATED NON OUALITY-RELATED APPROVAL CLASSIFICATION:
STATION
[ DEPARTMENT Description of Change (s): __Adh n amW feluw J -e w El,.u-,,, A th nod Zws W eL%
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Reason for Change (s): Mun-Flw e m h s f L. o l :n L d:auu,*~ u1R 01 %As
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2 Affected/ Additional Pages 14, th/h YL '/3, dF/
j E
Prepared by (Signature)
A% LW Date /-7-9e/
-(
Prepared by (Print) blJ' Ele w
o 1-
,, SECT!ON B fAPPROVAL z
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//7/9#
App'roval
/
sffechnIc'al Re 'dwer 7
m Date /!7!Y Approved g
" AIJthorized Individual d
- An SRO signature is required for Safety-Related Procedures.
=
M NO O YES is this FC a minor change to correct an obvious typographical, editorial or drafting error? If YES, provide explanation / justification in the " Reason for
- Change" above and the LCR Form and Technical and Surveillance Procedure Review Checklists are not required.
SECTION1CVFINAL REVIEW AND APPROVAL OF TYPED COPY NOTE: Cognizant DM Review SHALL be completed within 21 calendar days of effective date.
Satisfactory O NO O YES Station Problem Report No.
Revision Required O NO O YES Tracking No:
l Is a change required to the other unit's and/or trains' procedures?
xF O NO O YES O N/A Tracking No.(s) 6 4
Training required O NO O YES f/
- r g-g e
- Reviewed by Date //
.i 1 Cognizant Du li
, JAN 13 1994 i
- Approved by Date Yi 9(Z i
Plant Manager or Cog DM rt
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A et y
- This signature not requirca for Department Procedures.
3df94/4 / rf3*b j
- Plant Manager signature required for Station Procedures,
%%d;#
Cognizant DM signature required for Department Procedures.
This FORM, when completed, SHALL be retained for the life of the plant.
I i
Plant Procedures OPGP03-ZA-0002 Rev.23 P ge 55 of 61 b
b FIEl.D CIIANGE FORM OPGP03-ZA-0002-4 (Page 1 of 1)
N/, ANY FIELDS NOT NEEDED FC NO.
9 dSd
[ p!O
[] YES One-Time-Only FC7
[(NO
[] YES Typed prior to the Section B approval?
L SECTION A - DESCRIPTION Eocedure No.
- preo7 - cd-coo 2 Rev No. o Procedure Title 3o0 % t'sM'd Ch' iller 73v syss Wxt&<iM son L#" Ure;hOm Tesi.
SAFETY CLASSIFICATION:
[ SAFETY RELATED*
NON-SAFETY RELATED QUALITY CLASSIFICATION:
OUALITY-RELATED NON QUALITY-RELATED APPROVAL CLASSIFICATION:
STATION d DEPARTMENT Description of Change (s):
'N W cr de sJ 4,
<.oe cJ c,wb tic 4 %
.Lol
__:A p con J &
u<., J siLLI e~4ee,ilerlvow 4 tolau e& cidf(rA
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Al e'a de A csform.b hehacia This is the 2_"'A_ FC against this current revision, ott.er gg.rg-time-only.
Affected/ Additional Pages #4, f, /5*, 33, 37, sy,(t,
Prepared by (Signature) 63f/ WJ4 9 * "" M Date
/-6-f9'
(
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Recommend d {-- 3 1.Tl L B f Qbo-tod Date r-4 -9/
Approval
~ T(chnidal iewer Approved Date /-6 N r.:
Authorized Individual
- s. ~
l E
- An SRO signature is required for Safety-Related Procedures.
h,..
Ed O O YES is this FC a rninor change to correct an obvious typographical, editorial or tc _:
drafting error? If YES, provide explanationTjustification in the " Reason for D
Change" above and the LCR Form and Technical and Surveillance Procedure Review Checklists are not required.
SECTION CFFINALsREVIEW AND-APPROVAL 10FoTYPED COPY,
.j NOTE: Cognizant DM eview SHALL be completed within 21 calendar days of effective date.
Satisfactory 0 NO YES Station Problem Report No.
l Revision Required NO O YES Tracking No:
1R=w Is a change requireg.to the other unit's and/or trains' procedures?
O NO O YES 5 N/A Tracking No.(s) i Training required [EfNO O YES n?
" Reviewed by
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- Approved by M
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" This signature not required for Department Procedures.
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- Plant Manager signature required for Station Procedures, Cognizant DM signature required for Department Procedures.
j This FORM, when completed, SHALL be retained for the life of the plant.
J haw w
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A
-A A
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ATTACHMENT 2 I
a UNREVIEWED SAFETY QUESTION EVALUATION #93-0036 i
l 1
1 l
Misc-94\\94-046.co2
DOC. NO.
PAG E.__ OF ___
rnmamm SOUTII TEXAS PROJECT ELECTRIC GENERATING STATION arr4cer we UNREVIEWED SAFETY QUESTION EVALUATION FORM (TYPICAL)
PAGE 1 OF 3 Unreviewed Safety Question Evaluation # 9A0036 Revision No: 1_
ORIGINATING DOCUh1ENT:
51odifications 91049 and 9A050.
REY. NO. _
NOTE: Attach 10CFR50.59 Screening Form or License Compliance Review Form to this USQE.
NOTE: Use additional sheets as necessary to provide the bases.
A.1 1
Does the subject of this evaluation increase the probability of occurrence of an accident previously evaluated in the Safety Analysis Report?
O YES E NO Bases: The Essential Cooling Water (ECW) and the Essential Chilled Water (Cll) Systems either directly or indirectly provide cooling water for removing heat from safety related components either during or after 1)
Loss of Offsite Power,2) less of Coolant Accident,3) Safe shutdown Earthquake,4) hiain Steam Line Break,5)
Feedwater Line Break, and 6) Steam Generator Tube Rupture. These systems are designed for mitigation of these accidents. The design of the bypass valves, piping and instrumentation are of the same Quality Class as the balance of the ECW system. The construction of the modification meets the codes and standards and seismic requirements specified for ECW. Additionally, the bypass system flow rate is designed to meet flow rate requirements to mitigate the above accident during acute cold ECW inlet temperatures. Therefore, this modification will not increase the probability of occurrence of accident previously evaluated in the SAR.
II Does the subject of this evaluation increase the consequences of an accident pr(viously evaluated in the Safety Analysis Report?
O YES E NO Bases: The modification of installing a bypass line does not increase the consequences of any accident previously evaluated in the SAR, listed above, since the design function of the system is not changed and the accident / consequences are bounded by those evaluations including the single failure of a train of ECW or CII system.
Ill 1)oes the subject of this evaluation increase the probability of occurrence of a malfunction of equipment important to safety previously evaluated in the Safety Analysis Report?
O YES B NO Bases: This modification does not increase the probability of occurrence of a malfunction of equipment important to safety previously evaluated in the SAR. Per the analyses contained within Calculation htC 6429, a single cold (69'F to 42*F) ECW flow setting of 240 gpm will ensure that previously operating oc previously idle 300 ton chillers will start and run following receipt of an SI signat Furthermore, with ECW temperature 69'F to 42*F, operator intervention will not be required to readjust the flow settings for several hours post-DBA.
3 i
For an ECW temperature range of 41*F to 37'F (reference calculation AIC 6429), operation of the 300 ton chillers will require c<mtinuous local operator monitoring of both running and idle chillers. The running chillers (s) will be monitored for the appropriate range of condenser pressures and the ECW bypass flow will be adjusted as required.
1
1 DOC. NO.
PAGE _ OF__
SOUTil TEXAS PROJECT EL.ECTRIC GENERATING STATION Anacawun rr.wo.a su monum UNREVIEWED SAFETY QUESTION EVALUATION FORM (TYPICAL)
Evaluation No.
93-0036 Revision I i
PAGE 2 OF 3 The idle chiller (s) will have ECW isolated. Upon receipt of an SI start signal and subsequent start of a previously idle chiller, the operator will begin throttling ECW flow through the chiller using condensing pressure as the monitored parameter.
j If the ECW temperature drops below 37'F while in modes 1 through 4 (reference calculation MC 6429), the Essential Ch1Ders must be declared inoperable. (Reference calculation MC 6429)
In the event of a Derign Eas!s Loss cf Coolant Accidert, cperaters local ta the chillers would receive a conservatively estimated radiation exposure of 5.8 Rem over the first eight (8) hours following accident initiation. (Reference calculation MC 6429) This dose is within the once in a lifetime emergency dose for radiation workers of 25 Rem I
l referenced in 10CFR100.
IV Does the subject of this evaluation increase the consequences of malfunction of equipment important to safety previously evaluated in the Safety Analysis Report?
O YES a NO I
Bases: The consequences of a malfunction of equipment important to safety previously evaluated in the SAR is not increased. The manual throttling capability enhanced by this modification ensures that a specific flow setting for cold ECW will allow previously operating and previously idle 300 ton Essential Chillers to start and run following a receipt of an SI signal. Local operator control of the throttling valves when ECW is in the temperature range of 41 *F to 37 *F will ensure that previously operating or previously idle 300 ton chiller will start and run following receipt of an SI signal Therefore, no common mode failures have been intmduced and the capabilities of ECW and CII systems to perform their safety functions with a sinele failure remain unchanged. Note that the analyses performed in calculation MC 6412 provide details of Essential Chiller performance with a limiting single failure.
The design of the bypass valves, piping and instrumentation are of the same Quality Class as the balance of the ECW system. The construction of the modification meets the codes and standards and seismic requirements specified for ECW. Austenitic stainless steel is utilized in the bypass piping and valves. This material is utilized satisfactorily within other portions of the ECW system where flow is maintained. A small ECW flow will be maintained through the new bypass valves at the 150 ton chillers when they are not in use. The idle 300 ton chillers must be completely isolated from ECW when the ECW temperature is between 41'F and 37'F and the chillers are locally monitored by operators.
Ilowever, such operation is expected to be infrequent and of sufficiently short duration to preclude damage to the stainless steel components. Additionally, the stainless and alumismm bronze piping is galvanically isolated with insulating kits at the connecting flanges.
A.2 1
Does the subject of this evaluation create the possibility of an accident of a different type than any previously evaluated in the Safety Analysis Report?
O YES E NO 3
l 11ases: The possibility of an accident of a di!Ierent type than previously evaluated in the Safety l
Analysis Report, such as LOCA mitigation with a complete loss of essential environmental or habitability controlis not I
increased by enhancing the manual throttling capability of the ECW system through the Essential Chiller condensers.
Analyses performed within calculation MC 6429 indicate the capability of the Essential Chillers to start and run upon receipt of an SI signal with cold ECW throttled to 240 gpm (for ECW 69*F to 42'F) and with local operator control when the ECW temperature is in the range of 41*F to 37'F.
Il Ibes the subject of this evaluation create the possibility of a j
different type of malfunction of equipment important to safety than any previously evaluated in the Safety Analysis Report?
O YES E NO
DOC. NO.
PA G E.__ O F __,
rrr wo m=
SOUTII TEXAS PROJECT ELECDtIC GENERATING STATION ATTACHMFM IP DeQ.3 UNREVIEWED SAFFTY QUESTION EVALUATION FORM (TYPICAL)
Evaluation No. 93-00 %
Revision No.
1 PAGE 3 OF 3 llases: No new malfunctions of a different type than previously analyzed for the ECW system nr the Essential Chillers have been introduced. The current ECW line break and flooding scenarios envelope the addition of the new bypass lines. A single failurt due to operator error in mispositioning a new throttling valve is compensated by existing single failure analyses for loss of either ECW or Cil train. The analyses performed within calculation MC 6429 show that tripping of all 300 ton chillers upon an attempt to start or restart, following an Si signal with cold (69 'F to 42 *F) ECW conditions is not a credible event. Additionally, with the ability of the chillers to start / restart and run with cold ECW without operator intervention post.DBA, the reliable operation of Essential Chillers is enhanced. When local operator action is required with 41 'F to 37 *F ECW, the improved control capability provided by the new bypass valve enhance the cold ECW performance of the chiller over the previous use of large bore butterfly valve for throttling.
A.3 I
Does the subject of this evaluation reduce the margin of safety as defined in the basis for any Technical Specifications?
O YFE IE N O Bases: The margin of safety as defined in the basis for Technical Specification 3.7.14 is qualitative in that the capacity of Fssential Chilled Water system is adequate to satisfy assumptions in the safety analyses with a single failure. ' Die analyses performed in calculation MC 6412 best identifies the system DBA and LOOP loads and margins for both summer and winter conditions including various and limiting single failures. The 240 gpm condensing water flow to support chiller operation with cold (69 "F to 42 'F) ECW and the flow setting selected by local operator for 41 'F to 37 *F ECW (reference calculation MC 6429) will support the chiller capacity requirements specified in calculation MC 6412. Therefore, the margin of safety implied by this Technical Specification basis is not reduced. The Essential Chillers shall be declared inoperable if the ECW temperature drop below 37 *F while the unit is in modes 1 through 4.
B.
1.
M All of the above questions were answered NO, therefore, the originating document does not involve an Unreviewed Safety Question.
2.
O One or more of the above questions were marked YES, therefore, the originating document involves an Unreviewed Safety Question. The originating document, as presented shall NOT be implemented without prior approval of the NRC. Provide a recommendation for disposition of the Unreviewed Safety Question below. Refer to IP-L19Q for processing licensing amendments. Further processing of this form to PORC, Plant M.mger, and NSB is n_ot required.
j RECOMMENDED DISPOSITION:
Prepared by:
O. N.
M
/
6 Y
l fle Approved by: M
/
V
- y DEPARTMENT MANAGER DATE Approved by:
M fo)lz) /Y/ h p
/
/ / 9/
V/
[
PLANT MANAGER
/
DATE PORC Meeting No.:
% 00%
/
'kfi DATE REM A RKS:
4 STP 68) A (WS2)
$0tJTH TEXAS PROJECT ELECTRIC GENERATING STATION ATTACHMENT TP-3.20Q2 10CFR50.59 SCREENING FORM (TYPICAL)
PAGE 1 OF 1 UNIT #1
[] [ ] PROCEDURE
[X] PLANT MODIFICATION [ ] ECNP
[ ] DCN UNIT #2
[]
UOTil
[ ] OTIIER ORIGINATING DOCUMENT NO.: MODS 93449 & 93-050.
REV. NO.
3 DESCRII' TION OF CIIANGE: INSTALL A BYPASS ASSEMBLY AROUND TIIE ECW OUTLET VALVES OF TIIE ESSENTIAL CIIILLERS FOR IMPROVED CONTROL OF ECW FLOW DURING COLD WEATIIER CONDITIONS. '
REASON FOR CIIANGE:
DURING COLD WEATIIER, WIIEN ECW POND WATER TEMPERATURE GOES BELOW 60*F, TIIE ESSENTIAL CIIILLER CONDENSER PRESSURES BECOME AFFECTED RESULTING IN A CONDITION TIIAT COULD POSSIBLY TRIP AN ESSENTIAL CIIILLER OET-LINE. TIIEREFORE, TIIE ECW FLOW TIIROUGII TIIE ESSENTIAL CIIILLERS SIIOULD BE REDUCED DURING COLD WEATIIER CONDITIONS.
PRELIMINARY SCREENING YES NO 1.
Does the proposed change represent a change to the plant Technical Specifications?
[]
[X]
2.
If an Unreviewed Safety Question is known to be associated with the subject change, then further screening is not required; refer to IP-1-19Q.
Does the proposed change represent YES NO 3.
A change to correct a typographical, editorial or drafting error?
[]
[X]
4.
A change which is identical to and addressed in its entirety by an existing approved
[]
[X]
10CFR50.59 Screening /USQE7 5.
A procedure change in which the fortnat or text changed without changing actions
[]
[X]
or intent?
6.
A spare or replacement part/ component change with an equivalent part/ component
[]
[X]
(see Section 3.16 for a definition of equivalent).
If all answers to the above questions are "No" perform the final screening and mark N/A in the approval blocks below.
If the answer to any question (3) through (6) is "Yes" a final screening is not necessary. Sign the approval blocks below and discard pages 2 through 4.
Provide an explanationfjustification and references if iterns (3) through (6) are answered "Yes."
Prepared by:
N/A Date Approved by:
N/A Section Supervisor Date
STP 681 A (07N2)
$0tml TEXA9 PROJECT EIICTIUC GENERA 11NO STATION A1TACIIMENT TP-3 20Q 2 10CFR50.59 SCREENING FORM l
(TWICAL)
PAGE 2 OF 6 ORIGINATING DOCUMENT: MODS 93 049 & 93-050 FINAL SCREENLNG In response to the questions below, if the change involves something that is not described in the SAR and is not part of the licensing basis as shown by a review of NRC-published documents, then "No" is appropriate. However, this decision must be clearly documented with adequate technical justification. The phrase "not part of the liccasing basis" implies tiat the subject was not used by the NRC to issue or maintain the operating license or amendments; and is determined by examination of the Licensing Docket and the following (as applicable):
Safety Analysis Report Training and Qualification Program Environnental Report Final Environmental Statement Pire Hazards Analysis Report Safety Evaluation Report Physical Security Plan Standard Review Plan
[
Safeguards Contingency Plan Correspondence Operations Quality Assurance Plan Emergency Plan Previously Approved USQ Evaluations YES NO 1.
Does the subject of this review involve a change to the facility as described in the
[X]
[]
Safety Analysis Report?
2.
Does the subject of this review involve a change to the procedures as described in
[]
[X]
the Safety Analysis Report?
3.
Does the subject of this review propose the conduct of tests or experiments not
[]
[X]
described in the Safety Analysis Report?
4.
Does the proposed change affect the conditions or bases assumed in the Safety
[]
[X]
Analysis Report or safety-related functions of equipment / systems, even though the proposed change does not entail any physical change it, existing structures, systems, or procedures as described in the SAR?
j If any answer is affirmative, complete the screening form and perform an Unreviewed Safety Question Evaluation.
If all answers are negative, no Unreviewed Safety Question Evaluation is required.
All questions require adequate technical justification.
-l 1
TIP 681 A (U7/92)
SOUUI TEXAS PROJECT IIICTRIC GENDtAUNO STATION ATTACHMENT TP-3.20Q 2 10CFR50.59 SCREENING FORM
~
(TYPICAL)
PAGE _3_ OF.6_
ORIGINATING DOCUME!TT: MODS93-049 & 93-050 TECHNICAL JUSTIFICATION SHOULD INCLUDE THE SAFETY IMPLICATIONS OF THE CHANGE AND OTHER INFORMATION SUPPORTING ALL ANSWERS.
'ECIINICAL JUSTIFICATION OF THE CilANGE:
De Essential Cooling Water System (ECW) provides cooling water for removing heat from safety related components and transfers the her.t to the Essential Cooling Pond (ECP), which acts as the ultimate heat sink, during all modes of plant operation.
The ECP temperature fluctuates with the outside weather conditions and the components which it services which are therefore also affected by these varying temperature changes. As the temperature in the ECP drops below 60*F (Calculation MC 6429) the operation of the Essential Chillers become unstable and could result in an Essential Chiller trip. De original design used electro-hydraulic controlled ECW Essential Chiller outlet valves to throttle ECW flow through the Essential Chiller. The colder q.
the water, the more the flow was throttled. However, due to excessive maintenance and control problems the electro-bydraulic,
}-
the valve actuators were removed and replaced with manual operator under Temporary Modifications TI-EW-89-0063,0064, and 0065 for Unit 1, and T2-EW-89-0041,0042, and 0043 for Unit 2. Modifications 88-0167 and 88-0168 are being implemented to document and convert temporary modifications into permanent modifications. Currently, these valves are manually positioned to throttle flow during cold weather conditions. Since these outlet valv::s are relatively large (6" and 8" butterfly valves) and the control using a butterfly valve is fairly crude. an operator is required to be present to continuously monitor conditions and adjust flow when ECW supply drops below 45'F including after a design basis LOCA which is an ALARA concem. This is an l
undesirable situation. A better means of control is necessary since the main valves cannot effectively control in that flow range J
and the range of the flow measuring instrumentation does not give accurate readings at such low flow conditions. Deref xe, 7
tnodificatioris 93049 for Unit I and 93050 for Unit 2 were developed to install a bypass assembly including an appropriate flow instmmentation around the outlet valves to provide precise flow control during acute cold ECW supply temperatures. When water temperature drops below 60*F. the main outlet valves are to be closed and flow is then limited to the bypass line. Re local flow instruments will provide accurate indication insuring better control. Since this bypass assembly will be set at one flow rate, continual adjustments by operations will not be required when ECW supply temperatures fall to and including 42 'F. These modi 5 cations also abandon the Radwaste air handLng unit inplace inaddition to providing instructions for testing and procedure changes to accommodate the supporting calculations.
After installation of this modification, the following features and configurations will be implemented:
a.
" Cold ECW" operation is entered from a range of conditions defined as follows:
Above ECW supply temperature of 69*F only normal ECW and Essential Chilled Water system operation is allowed.
Below an ECW supply temperature of 60'F, only " cold ECW" operation is allowed.
Procedural entry to and exit from " cold
- ECW chiller operation may occur at any temperature from 60*F through 69'F.
b.
%e 300 Ton Essential Chillers will start and operate successfully during " cold" ECW conditions, without operator intervention. following a design basis accident, with ECW flow rates manually set at 240 gpm. In modes I through 4 this conclusion is valid with ECW supply temperatures down to and including 42*F. When the ECW supply temperature is between 41 'F and 37 'F, operator actions are required to maintain chiller operability. When the ECW supply temperature falls below 37 'F. the chillers are inoperable, in modes 5 and 6 or "defueled" mode. appropriate operator actions are required to maintain chiller operability (150 and 300 ton) when ECW supply temperature falls between 42 'F and 32 *F.
The ECW system pressure boundary has been analyzed for temperature down to 32 'F.
i j
l STP 6Al A (07s2)
SOUT11 TEXAS PROJIET IILCTRIC GENERATING STATION ATTACl[MDrT TP-3.20Q-2 i
10CFR50.59 SCREENING FORM j
(TYPICAL)
PAGE 1 OF 1 ORIGINATING DOCUMENT: MODS93-049 & 93-050 c.
In modes 1 through 4 with " cold" ECW, the 150 Ton Chillers will be locked out electrically, the ECW flow through the 150 Ton Chiller is limited to 5 to 10% (position) open of the bypass valve. Ris is required to prevent " free cooling" when ECW temperatures are very cold and " free heating" when ECW temperatures are above chilled water temperatures.
d.
Starting an idle chiller can involve heat transfer loads on the evaporator and condenser considerably in excess of the rated chiller load. He 300 Ton Essential Chiller could operate at or near rated loads with lower ECW flow rates, which would also allow operation at minimum load with lower ECW temperatures, provided the current limiter setpoint for the 300 Ton Essential Chillers is set at 48 *F to nummize the load during startup.
If the main header outlet valves are left closed and only the bypass valves remained open with corresponding flow of 240 gpm the Essential Chiller operation would operate until the ECP temperature reaches approximately 69'F. At that temperature and flow the Essential Chillers would be experiencing high condenser pressure which might cause the Essential Chillers to trip. His change occurs over an extended time, allowing ample time for operators to increase flow.
The ECW and Cil system designs are affected by this modification in that the snethod of cold weather control is different but i
the intent is the same as the original design. Regulating the ECW flow through the Essential Chiller, was part of the origina' design and does not change the ECW or Cil system designs. The Essential Chillers performance was evaluated (ref. calculation MC-6412 and MC-6429) by including the affects of the bypass assembly around the ECW Essential Chiller outlet valves. His reduction in flow during cold weather was also part of the original design. It was determmed that the ECW and CII systems will maintain and meet their original design and performance requirements with the exception that the minimum ECW temperature for 300 ton Essential Chiller operability is established at 37'F. In modes 5 and 6 or "defueled" mode, appropriate operator actions are required to maintain chiller operability (150 and 300 ton) when ECW supply tempesature falls between 42 *F and 32 *F.
This modification provides for the installation of a bypass assembly around the ECW system outlet valve from each of the Essential Chillers. Each bypass assembly consists of two aluminum bronze weld-o-lets with tie-in flanges, two stainless stee!
1 isolation / control valves, a stainless steel flow orifice for flow indication, associated flow instrumentation, and stainless steel piping. The new isolation valves are manually operated and will be classified as non-active valves, however the pressure retainmg r
parts will be ASME 111 Class 3. The bypass assembly material transitions from aluminum bronze to stainless steel (ref.
SLOl9PSOM ISpe Spec. "WT" and "WB"). The aluminum bmaze to stainless steel connection points will be galvanically insulated by the use of insulating kits. %e bypass assemblies meet stress allowable values and is and found acceptable. The calculated stresses are low and are within ASME code allowable limits. ne concern for microbiologicalinduced corrosion (MIC) is being limited by maintaining flow, using stainless steel material and by the addition of a chlorine / bromine solution to control water chemistry. It should be noted that stainless steel is aheady being used in the EW system without detrimental MIC affects.
I I
STP 681 A (07192)
SOUni1TXAS PROJECT EtICIRIC GENERATING STATION ATTACHMENT TP.3.20Q-2 10CFR50.59 SCIEENING FORM (TYPICAL)
PAGE 5 OF 6 ORIGINATING DOCUMENT: MODS93-049 & 93050 TECHNICAL JUSTIFICATION SHOULD INCLUDE Ti!E SAFETY IMPLICATIONS OF THE CHANGE AND OTHER INFORMATION SUPPORTING ALL ANSWERS.
'IECHNICAL JUSTIFICATION OF TifE CIIANGE: (CONT'D) 1.
He ECW and CH Systems are discussed and shown in the UFSAR. %e addition of the bypass line does revise and affect the descriptions, assumptions, or bases for the UFSAR. Therefore,it is considerext to be a change to the facility as described in the UFSAR.
2.
His is not a change to a procedure as described in the UFSAR or SER.
3.
This is not a test or experiment as described in the UFSAR or SEP.
4.
The installation of a bypass assembly does not adversely affect the function or quality of the ECW or CH Systems.
There is no adverse effect on fire hazard analysis, seismic II/I, HEIEA, MELBA. EQ or any other item or activity as described in the UFSAR.
Interdiscipline Coordination Required?
[X] Yes
[ ] No U
If "Yes," obtain appropriate Concurrence.
[ ] Risk and Reliability Analysis
[ ] Hermal Hydraulics _
[ ] Reactor Engr.
.0 6 W f
[X] CivilW
[ ] Mech
[ ] Elect _ [X]I&
[ ] EQ _ [X] Other STRESS GP h4-et
$MW Prepared by:
h.N.
t[6 /9$
an1 Cong H. Pham Date fC1h Approved by:
I a
n D%artisent Manager Date
-<h.
6-e STP 681 A (tWM)
SOUTil TEXAS PROHCT ELECTR]C OENERATING STATION ATTACIIMENT TP.3.20Q.2 l
10CFR50.59 SCREENING FORM (TYPICAL)
PAGE 6 OF 6 1
)
ORIGINATING DOCUMENT: MODS93-049 & 93-050.
1 The following documents / attributes have been reviewed as part of the 10CFR50.59 final screening process.
Documents Sections Reviewed UFSAR 2.4.11, 9.2.1.2. 9.2.5 Table 3.9-1.2. 9.4.1, Table 9.4-5.1 i
Technical Specifications 3/4.7.4, 3/4.7.5, 3/4.7.14 Safety Evaluation Report (SER) 2.4.11. 9.2.1.2, 9.2.5. 9.4.1 Fire Protection (FIIAR)
N/A j
Environmental Report N/A Security Plan N/A Emergency Plan N/A Offsite Dose Calculation Manual (ODCM)
N/A Final Environmental Staternent N/A Core Operating Limits Report (COLR)
N/A Operations Quality Assurance Plan N/A Other DBD ECW System SR289MB1006 Other DBD CII System 5V369VB0120 4;
Attributes Check if Reviewed Environmental Qualification....
Seismic Design........
v' Personnel Radiation Protection Missile Protection..........
Containment Integrity.....
Single Failure Criteria j
Electrical Separation (RG 1.75)
Heavy Loads........
IIELB A........................
Contml Room liabitability..............
Plant Clemistry.....
Iluman Factors Probabilistic Safety Assessment...
Other...
l pi Note: If Attributes are identified in the originating document, this section need not be completed.
i i
>~,
ATTACHMENT 3
P CORRESPONDENCE FROM HOUSTON LIGHTING & POWER TO YORK INTERNATIONAL, DATED FEBRUARY 1, 1994 l
l t
k l
s e
9 h
i t
i i
l Mtsc 94\\94.c46.ce2
The Light company uth *iewas Projut Electric Generating Station P. o. Box 289 Wadswortb, Texas 77483 llouston Lighting & Power February 1, 1994 ST-HS-XX-17104 File.: M08.ll'.01 York International Corp.
P.O.
Box 1592 York, PA. 17405 Attention:
Mr. Herm Paetow, Director of Contracts Engineering The purpose of this letter is to confirm and document discussions and agreements between York International (principally by Tony Shanko) and Houston Lighting & Power (principally by Victor Starks & Phil3ip Pieknik) regarding the analysis of essential chiller operation contained in HL&P calculation number MC-6429, Rev.
O.
The modification to the 300 ton chiller involves resetting the chilled water control setpoint from 42
- F to 48
'F (applies to all operating modes), addition of a manun3 bypass valve around the original condenser cooling water flow control vi 've, and changes to operati 7rocedures to divert condenser ooling water flow through the b
-s line and set flow at 240 Spa before condene.er cooling wt.-.ar temperature drops below 60 *F (between 60
& 59
- F).
In normal operation, in the cold condenser cooling water alignment, the 150 ton chiller in each' train will be intentionally disabled, to increase the load available to the 300 ton chiller.
The same modifications apply to the 150 ton chiller except the flow is 120 gpm, and the 150 ton chiller would be used in the cold condenser cooling water lineup only in cold shutdown and refueling modes of unit operation.
York and HL&P jointly ran several specific cases analyzed in 1
calculation MC-6429 Rev.
O.
A comparison of the results'is included as an attachment to this letter.
The MC-6429 results either were in close agreement with the York computer results (for the low load, low temperature case) or were conservative relative to the York computer results.
Discussions regarding differences in compressor shaft horsepower between the HL&P model and York model led to an agreement to reset the 300 ton chiller current limiter based on the expected bus voltage of 4160 volts, instead of the motor rated voltage of 4000 volts.
mgD05.017 Pudut Managn on Echalf of the Participants in the South Teus Project
i 1
g,;
Ilesuston Lighting & Power Company South Texas Project Elecinc Generating Station York confirmed that effective chiller capacity of the 300 ton
'j chiller increases with increasing chilled water outlet j
temperature, and provided a graph showing maximum predicted i
capacity versus chilled water outlet temperature, for-chilled water outlet temperatures from 42 to 60
- F, entering condenser water temperatures of 100 and 107.9
- F, and flows per the original design.
HL&P understands the assumption within.the York computer model of optimum refrigerant charge at each point, so actual field results could vary depending on whether the refrigerant charge has been optimized for that' condition.
j ii York provided compressor maps for both the 150 ton and 300 ton essential chillers and described the design process leading to the selection of compressor speed.
This has given HL&P insight into how seemingly small differences in condenser cooling water inlet temperature specified, fouling factor, and/ n flow rate would have resulted in a significant reduction in.ompressor j
speed and a more flexible operating range.
i York concurs with the method of operating the essential chillers with condenser cooling water temperatures below the 60-69
- F i
i range, with the following points of discussion noted-i The output predicted by the York computer model assumes the refrigerant charge is tailored for the. conditions analyzed.
l The results of post-modification testing showed chiller; output exceeded 300 tons during pulldown when chilled water outlet reached 48
- F.
This proves the actual ~ refrigerant charge is acceptable for the revised chilled water temperature control setpoint.
The margin of available capacity over required capacity makes it unnecessary to optimize the refrigerant charge for the new conditions.
)
The rate of tube fouling increase significantly with the' lower condenser cooling watcc flow.
This is recognized and i
acknowledged in MC-6429.
The new program'of condenser performance testing will be capable of detecting tube j
- fouling, j
t The compressor operating point for the 100 ton, 40.7
- F cooling water case is below the region of the compressor map supported by factory test data or York field experience.
This point is virtually equivalent to the same load, with a condenser cooling water flow of 1100 gpm and-inlet temperature of 54
- F.
The latter was allowed by previous operating procedures.
The 300 ton chillers have probably operated under conditions very similar to the 100 ton load, 40.7
- F case, but such operation has not been documented.
Observation of chiller operation as condenser cooling water temperature drops he'9 :en 50 and 42
- F, when this next occurs, will provide sufficient evidence of post-accident operability.
d-V Ilouston Lighting & Power bompany i
South Texas Project Elecnic Generating Station York had expressed a concern for potential oil foaming during the restart of an operating 300 ton chiller during diesel loading.
Starting the Emergency Cooling Water P.mp several minutes before starting the chiller compressor is one of the circumstances which can lead to a chiller trip.
during startup, due to oil foaming.
Oil foaming is a phenomenon normally associated with a chilled water train which has been idle for an extended period of time.-
The condition described would allow the chiller to be idle for I
only about 4 minutes, so there is a very limited time for' refrigerant to be absorbed in the oil.
HL&P described the method and results of the post modification testing.recently completed, especially Test #2.
This test' simulated'the restart sequence, with the exception of the extended period s
of time (roughly 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />) needed to warm the chilled water system up the specified temperature difference.
Bearing oil i
pressure was recorded at 1 second intervals..
The test results show a temporary depression in oil pressure such as would be caused by oil foaming, but the minimum oil pressure remained well above the low oil pressure trip setpoint..
York agreed this was a more severe case tran the post LOCA restart because of the much longer time available to absorb refrigerant during the test.
In summary, it is York International's opinion that the 300 ton chiller will operate successfully under the conditions described' in MC-6429, Rev.
O.
~N O f --
Anthony Shanko,' Nork Int., Contract Engineer Date 014 w - Ou9e'Q 1/t I n l
P.
W. Picknik, HL&P STPEGS Design Engineer
-Date t 1 '/N t(3./.,[$ b Victor Starks, HL&P STPEGS Desigru Engineer Date
~
Yours very truly, t
S. E. Thomas 1
Department Manager, Design Engineering PWP/hg Attachment i
1 mn005.017 4
e<w a ATTACHMENT 1.
York run #1 = Appendix 8.b of MC-6429 Input:
Load = 100 tons Condenser flow = 240 gpm Condenser water entering temperature = 40.7
- F Results:
York MC-6429 4
6 6
Condenser Load 1.46 x 10 Btu /hr 1.50 x 10 Btu /hr Tsat in Condenser 53.6
- F 53.7
- F Hand calculations confirmed adequate differential pressure between condenser and evaporator to achieve adequate refrigerant flow through the float valve.
2.
York run #2 = MC-6429 Max. Transient (App. 1 & App. 3.d)
Input:
Condenser flow = 240 gpm Condenser water entering temperature = 69
- F Load limited to 447 shp (York) or 484 shp (MC6429)
Results:
York MC-6429 i
Chiller load 380 tons 431 tons Condenser load 5.68 x 10 Btu /hr 6.41 x 10 Btu /hr I
6 6
Tsat in Condenser 119.1
- F 125.8
- F 3.
York run #3 = MC-6429 Max. Load 9 48
- F chilled water j
(App. 1 and App. 3.b)
Input:
Condenser flow = 240 gpm Condenser water entering temperature = 69
- F Load limited to 447 shp (York) or 484 shp (MC6429)
Results:
York "MC-6429 Chiller load 348 tons 379 tons 6
6 Condenser load 5.32 x 10 Btu /hr 5.78 x 10 Btu /hr Tsat in Condenser 115.8
- F 121.5
- F en9 05.017 0
.