ML18082A938

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Startup Procedure 90.6,Revision 2, Cooldown Capability of Charging & Letdown.
ML18082A938
Person / Time
Site: Salem PSEG icon.png
Issue date: 08/07/1980
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Public Service Enterprise Group
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ML18082A922 List:
References
90.6, NUDOCS 8008190549
Download: ML18082A938 (15)
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I' STARTUP PROCEDURE 90.6,Rev. 2 UNIT NO. 2 COOLDOWN CAPABILITY OF CHARGING AND LETDOWN SUP 90.6, Rev. 2 Salem Unit 2

STARTUP PROCEDURE 90.6 COOLDOWN 'CAPABIDITY OF CHARGING AND LETDOWN __ _

1.0 OBJECTIVES 1.1 The objective of this test is to determine the capability of the charging and letdown system to cooldown the reactor coolant system with the steam generators isolated and one reactor coolant pump in operation

  • SUP 90.6, Rev. 2 Salem Unit 2
  • REFERENCES 2.1 2.2 FSAR Salem Unit 2 Technical Specifications 2.3 Salem Operating Instructions EI I-4.0, "Safety Injection Initiation", Rev. 1 OI II-1.3.1, "RCP Operation", Rev. 1 OI II-3.3.1, "Establishing Charging, Letdown and Seal Injection Flow", Rev. O.

2.4 Westinghouse Precautions Limitations and Setpoints, Rev. 7, August, 1979.

2.5 SUP 90.0 Special Tests Sequence Document 2.6 SUP 70.5 RCS Flow Measurement.

Salem Unit 2 SUP 90.6, Rev. 2 0 PREREQUISITES

. 3.1 The low power physics testing is complete (SUP's 80.3, 80.4, 80.5, B0.6) 3.2 Brush Recorders are set up to record the plant parameters outlined in paragraph 8.2.

3.3 A trend block containing the address points shown in paragraph 8.3 has been established on the P-250.

3.4 The P-250 is operational with a dedicated analog recorder acting as a saturation meter.

3.5 The test engineer has briefed all personnel involved in the conduct of the test.

3.6 SUP 70.5 RCS Flow Measurement (Ref *. 7.7) has been completed.

3.7 Station QA has been notified of the start of the test.

3.8 The control room has* been cleared of non-essential personnel .

Salem Unit 2 SUP 90.6, Rev. 2 4.0 INITIAL CONDITIONS 4.1 The reactor is shutdown and borated to ensure adequate shutdown margin, with the shutdown banks withdrawn, (Mode 2).

4.2 All four reactor coolant pumps are in operation.

4.3 Steam Generator level being maintained at approximately 33% with the Auxiliary Feedwater System.

4.4 Reactor Coolant System pressure and level ender automatic control at approximately 2235 psig and 22% level.

4. 5 Reactor Coolant System temperature being controlled at approximately 54.7°F by steam dump to the condenser under automatic pressure control, (Steam Generator pressure at approximately 1005 psig) , or alternatively with atmospheric steam dump if the condenser is unavailable.

4.6 Steam Generator chemistry is adjusted within normal specification such that Steam Generator blowdown can be isolated when the steam generators are isolated.

4.7 Normal charging and letdown in service and under automatic control .

  • Salem Unit 2 SUP 90.6, Rev. 2

ENVIRONMENT CONDITIONS

5. l No special environmental conditions are required for the conduct of this te.st.

6.0 ACCEPTANCE CRITERIA 6.l The'effect of charging and letdown variations on Tavg has been determined.

7.0 SPECIAL TEST EQUIPMENT 7.l Three Brush 260 (or equivalent) chart recorders, connected per section 8.0.

Cal. Date' Recorder No.

l 2.

3 SUP 90.6, Rev. 2 Salem Unit 2 DAT1' COLLECTION 8.1 All data acquired as a result of performance of this procedure shall be recorded at the appropriate step, on the Check Off Sheets or affixed as appropriate.

to monitor the 8.2 Two Brush Recorders will be utilized and connected as shown following test parameters.

Inst. Monitorins: Rans:e Recorder 1 RCS Flow Loop 21 0-10%

Channel No. 1 FT 414 RCS Flow Loop 22 0-10%

Channel No. 2 FT 424 RCS Flow Loop 23 0-10%

Channel No. 3 FT 434 RCS Flow Loop 24 o-10%

Channel No. 4 FT 444 Pressurizer Pressure 16-2400 Channel No. 5 PT 474 Pressurizer Level 0-100%

Channel No. 6 LT 461 Recorder 2 Monitorins:

Channel No. 1 RCS Charging Flow Channel No. 2 RCS Letdown Flow 3 Charging Temperature Channel No.

4 Letdown Hx Outlet Temp.

Channel No.

Channel No. 5 Regen. HX Outlet Temp.

Channel No

  • 6
  • 8.3 'rhe reactivity computer chart recorders will be connected as of the.special test program.

8.3.l Recorder #l Channel A Channel B p-computer output in the remainder N-41 excore detector current 8.3.2 Recorder #2 Channel A Loop 21 T c TE 413 B 510-610 Channel B Loop 21 Th TE 413 A 510-610 8.3.3 Recorder #3 Channel A Loop 22 Tc TE 423 B 510-610 Channel B Loop 22 Th TE 423 A 510-610 8.3.4 Recorder #4 Channel A Loop 23 Tc TE 433 B 510-610 Channel B Loop 23 Th TE 433 A 510-610 8.3.5 Recorder lt5 Channel A Loop 24 Tc TE 443 B 510-610 Channel B Loop 24 Th TE 443 A 510-610 SUP 90.6, Rev. 2 Salem Unit 2 B.4 Two P-250 trend blocks will be set up to monitor the following computer points.

(Additional points may be added as required by the test engineer)

~ Address Parameter 1 P0480A Pressurizer Pressure 2 L0480A Pressurizer Level 3 T0400A RCS Loop 21 Avg Temperature 4 F0400A RCS Loop 21 Flow 5 T0420A RCS Loop 22 Avg Temperature 6 F0420A RCS Loop 22 Flow 7 T0440A RCS Loop 23 Avg Temperature 8 F0446A RCS Loop 23 Flow 9 T0460A RCS Loop 24 Avg Temperature 10 F0460A RCS Loop 24 Flow 11 P0400A Steam Generator 21 Pressure 12 L0400A Steam Generator 21 Narrow Range Level 13 P0420A Steam Generator 22 Pressure 14 L0420A Steam Generator 22 Narrow Range Level 15 P0440A Steam Generator 23 Pressure 16 L0440A Steam Generator 23 Narrow Range Level 17 P0460A Steam Generator 24 Pressure 18 L0460A Steam Generator 24 Narrow Range Level 19 N0031A Source Range Channel 1 20 N0032A Source Range Channel 2 21* T0126A Regen Hx Charging Outlet Temperature 22 T0127A Regen Hx Letdown Outlet Temperature 23 T0140A VCT outlet Temperature 24 F0128A Charging Pump Discharge Header Flow 25 F0134A Non-Regen Hx Letdown Outlet Flow 26 T0185A Seal Return Temp 27 F0134A Letdown Flow 28 T0145A Non-regen Hx Letdown Outlet Temp.

29 T0482A Pressurizer Surge Line Temp 30 T0122A Excess Letdown Hx Outlet Temp.

31 P0142A Charging Pump Discharge Pressure 32 P0135A N. Regen. Hx Outlet Pressure 33 P0139A VCT Pressure 34 F0483A(or Y) Pressurizer Spray Flow 35 F0484A(or Y) Pressurizer Spray Flow 36 U0091A Average Incore T/C 8.5 The following data (as applicable) shall be recorded on each strip chart and computer listing.

a) Unit number b) Date c) Procedure number d) Parameter scale and range e) Chart speed f) Name o~ person recording data g) Recorder IO number h) Time mark for start qf test Salem Unit 2 SUP 90.6, Rev. 2

8.6 Record Operator participation in the test on Appendix A.

9.0 PRECAUTIONS 9.1 Before beginning, and while the test is conducted, perform shutdown margin calculations, as directed by the Test Engineer.

9.2 The boron concentration in the pressurizer should not be less than the con-centration in the Reactor Coolant loops by more than 50 ppm. Use pressurizer spray to equalize concentration before the test.

9.3 Both source range channels should be in operation and monitored closely during the conduct of this test, (15 minute intervals) . Any unexplained increase in counts by a factor of*two is grounds for test termination.

9.4 Makeup flow to the .RCS must be at the same boron concentration as that required for shutdown.

9.5 The RCS should be sampled for boron concentration once toward the end of the 30-minute period of maximum letdown and charging and shutdown margin verified.

9.6 Observe the differential. pressures between Steam Generators. and maintain llP

< 100 psid to avoid safety.injection. If it determined that Steam Generator pressure control is unsatisfactory to maintain this limit, then defect the S/G llP input to SI actuation per Appendix A of SUP 90.0 (ref. 2.4).

9.7 Do not use excess letdown unless absolutely necessary.

9.8 When changing charging and letdown*flows, always reverify RCP seal injection flow is about 8 gpm per pump

  • Salem Unit 2 SUP 90.6, Rev. 2

-a-

INSTRUCTIONS 10.l If the reactor coolant system Tavg is above 547°F, reduce it by manually increasing steam dump to the condenser.

10.2 Prepare all charts and computer listing per paragraph 8.4.

10.3 Start chart recorders and intiate P-250 trending.

10.4 Shutdown reactor coolant pumps 21, 22 and 24 in accordance with OI II-1.3.l. Ensure That the pressurizer spray valves are closed and in manual control.

10.5 Isolate all four steam generators by closing main steam isolation valves and Auxiliary Feedwater valves, 21-24AF21 10.6 Isolate Steam Generator blowdown if it is presently in operatio~. by closing valves 21-24 6B-4 10.7 Increase charging flow and letdown to the maximum allowable, (150 gpm letdown}. Start additional charging pumps as ne~essary. Bypass the letdown ion exchangers by directing three-way valve 2CV21 to the VCT.

10.8 Continue maximum letdown and charging for a 30-minute period and then reduce letdown and charging to the minimum, (45 gpm} . Continue recording data, marking this point on chart recorder traces and trend typewriter printout .

  • 10.9 NOTE: Toward the end of the 30-minute period a boron analysis of the RCS should be done to verify adequate shutdown margin.

After running with minimum letdown and charging for a 30-minute period, stop the recorders. Restore the letdown line to normal.

'* NOTE: The test engineer may elect to run longer than 30 minutes if desired to obtain sufficient data.

CAUTION: Perform a shutdown margin calculation at the lowest temperature reach during the test.

10.10 Stop trend printer and recorder.

10.11 Open MSIV bypass valves and then the MSIV's when the steam generator pressure and steam header pressure are approximately equal.

NOTE: Control secondary side pressure using the atmospheric dump valves until all MSIV's are open.

10.12 Start reactor coolant pumps 21, 22 and 14 in accordance with OI II-1.3.l, "RCP Operation". Re-establish steam pressure control using the condenser steam dump if

  • available.

Salem Unit 2 SUP 90.6, Rev. 2 10.13 On Data Sheet 5.1, using recorded data, calculate the average ra~e of temperature change for the 30-minute periods of maximum and minimum letdown and charging. Also record the maximum rate of change observed and the period this rate was sustained.

10.14 Record the names of Unit 2 licensed operators participating in or observing the test in Appendix B, as appropriate.

10.15 Retrieve and attach chart recordings and P-.250 printouts per paragraph 8.1 - 8.3.

10.16 Generate a plot.of temperature vs. time for each of the two cases .

SUP 90.6, Rev. 2 Salem Unit 2 11.0 TEST COMPLETION 11.l Comments 11.2 Changes to SPM 11.3 Signature Date T/C Date S/S QA/QC Date STA Date SUP 90.6, Rev. 2 Salem Unit 2

DATA SHEET 5.1 Maximum Letdown and Charging Charging Flow ______gpm Letdown Flow ______gpm

_ _ _ _ _ _ _ _oF Average Temperature Change over the 30-minute period.

Avg. change ?F Max rate _ _ _ _ _ _ _°F/Hr.

Rate of Temperature Change .5 ------hr observed Sustained _ _ _ _ _ __.:min.

Minimum Letdown and Charging Charging Flow _ _ _ _ _gpm Letdown Flow _ _ _ _ _gpm

  • Average Tempe~ature Change ---..,.----~

OF over the 30-minute period.

Avg. change OF Max rate _ _ _ _ _ _ _°F/Hr.

Rate of Temperature Change .5 -------hr observed

'* Sustained _ _ _ _ _ _....;min.

Calculated by Reviewed by Salem Unit 2 SUP 90.6, Rev. 2

APPENDIX A .

SRO's Participating In Test SRO's Observing Test Salem Unit 2 Page l of 2 SUP 90.6, Rev. 2

APPENDIX A (cont.)

RO's Participation In Test RO's Observing Test Salem Unit 2 Page 2 of 2 SUP 90.6, Rev. 2

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