ML18082A936

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Startup Procedure 90.3,Revision 2, Natural Circulation W/ Loss of Pressurizer Heaters.
ML18082A936
Person / Time
Site: Salem PSEG icon.png
Issue date: 08/07/1980
From:
Public Service Enterprise Group
To:
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ML18082A922 List:
References
90.3, NUDOCS 8008190539
Download: ML18082A936 (20)
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Text

STARTUP PROCEDURE 90.3 UNIT NO. 2 NATURAL CIRCULATION WITH LOSS OF PRESSURIZER HEATERS

  • 800819 053~

suP 90.3 Rev. 2 Salem Unit 2

STARTUP PROCEDURE 90.3 Rev. 1 NATURAL CIRCULATION WITH LOSS OF PRESSURIZER HEATERS l.O OBJECTIVES l.l Verify the ability to maintain natural circulation and adequate saturation margin with the loss of the pressurizer heaters.

l.2 Determine the RCS depressurization rate after the RCP's and pressurizer heaters are tripped.

l.3 Verify that saturation margin can be controlled through the use of primary charging flow and secondary steam flow.

l.4 To provide operator experience with Natural Circulation operations .

SUP 90.3 Salem Unit 2 Rev. 2

2.0 REFERENCES

2.1 Westinghouse precautions limitations and setpoints, Rev. 7 , August 1979.

2.2 SUP 90.0, Special Tests Sequence Document 2.3 Operating Instructions 2.3.l OI II-1.3.l "RCP operation" 2.3.2 EI I-4.9 "Blackout"

\

SUP 90.3 Salem Unit 2 Rev. 2

3.0 PREREQU~~

3.1 The low power physics measurement program (SUP's 80.3, 80.4, 80.5, and 80.6) is complete.

3.2 Brush recorders are connected per section 8.0.

3.3 The P-250 computer T/W trend is monitoring the parameters listed in Appendix A.

3.4 The reactivity computer/recorders are operating recording flux reactivity, and all loop wide-range Tc and Th attached in paragraph 8.3.

3.5 Automatic actuation of Safety Injection has been blocked per SUP 90.0, App. A (ref. 2.2]_

3.6 The input logic of steam line ~PS.I. actuation has been blocked per SUP 90.0~

App. A (ref. 2.2) 3.7 The input logic of high steam flow, coincident with low steam line pressure or low-low Tav is modified per reference 2.2.

3.a The test engineer has conducted briefings for all personnel involved in the

<. conduct of the test.

3.9 The special operator instructions given in SUP 90.0, section 9.1.4 are po~ted conspicuously in the control room.

3.10 Station QA has been notified of the start of this test.

3.11 The S/G lo-lo and lo level reactor trip setpoints have been reset to 5%.

App. A, SUP 90.0 (and step 10.9)

. 3.12 The NIS power ranges high level, low-range reactor trip setpoint (normally 25%)

has been reset to the equivalent of 7% RTP .

SUP 90. 3 Salem Unit 2 Rev, 2

  • -- ----- ~

INITIAL CONDITIONS 4.1 The reactor is *critical at approximately 3% power as determined by the incore flux mapping system.

4.2 The rod control system is in Manual (in Bank D Select) with control Bank D approx. 160 steps or as specified by the Test Engineer.

4.3 All four RCP'3 are in operation. lNOTE: if the branching option from SUP 90.l is used, this paragraph is N/A) 4.4 Steam Generator level is maintained at approximately 33% (N.R.) using Auxiliary Feed-water Pumps.

4.5 Pressurizer pressure is maintained at 2235 psig with heaters and spray in Automatic.

4.6 Pressurizer Level is approximately 26% with charging flow controlled manually.

(34% if branching from SUP 90.1 in natural circulation) 4.7 RCS average temperature Tave is 547°F + 1°F. (NOTE: if branching, Tav will be about 570°F) 4.8 Ste";ID Generator pressure is being maintained at about 1005 psig by steam dump to the condenser* in the steam pressure mode of control (preferable) or by atmospheric steam dump (alternate)

SUP 90.3 Salem Unit 2 Rev. 2

5.0 ENVIRONMENTAL CONDITIONS 5.1 Atmospheric steam dump may be required during the performance of this procedure.

6.0 ACCEPTANCE CRITERIA 6.1 Natural Circulation is established and maintained in all four reactor coolant loops.

6.2 The maintenance criteria of SUP 90.0, section 9.1.4.l are met throughout this test.

6.3 The maximum RCS depressurization rate should not exceed the equivalent of 200°F per hour in the pressurizer, nor be so great as to necessitate an RCS cooldown rate in excess of l00°F/hour

  • 6.4 As many SRO's and *Ro's as practical participate in, or observe this test.

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

Recorder No. Cal. Date l

2 3

7.2 Westinghouse reactivity computer Recorder u Recorder #2 Recorder #3 Recorder #4 Recorder ts SUP 90.3 Salem Unit 2 -s- Rev. 2

  • 7.3 Chronometer or stopwatch a.a DATA COLLECTION 8.1 All data acquired as a result of performance of this procedure shall be recorded at the appropriate step, on attached data sheets, or affixed as appropriate.

8.2 Brush recorder data point. Mark each chco.rt with test No., Date, Time, Recorder Number, Chart Speed.

Recorder No. 1 Inst. Parameter Range 8.2.1 Channel No. 1 FT-414 RCS Loop Flow 21 0-10% flow Channel No. 2 FT-424 RCS LOop Flow 22 0-10% flow

  • Channel No. 3 FT-434 RCS LO op Flow 23 0-10% flow Channel -No. 4 FT-444 RCS Loop Flow 24 0-10% flow Channel No. 5 PT-474 Pressurizer Pressure 1600-2400 psig Channel No. 6 LT-461 Pressurizer Level 0-100%

Recorder No. 2 Inst. Parameter Range 8.2.2 Channel No. 1 FA-1087 Auxiliary Feedwater flow o- 300 gpm to S/G 21 LT-517 S/G 21 Level 0-100%

Channel No. 2 Channel No. 3 PT-516 S/G 21 Pressure 700-1200 psig Channel No. 4 FA-1091 Auxiliary Feedwater flow 0-300 gpm to S/G 22 Channel No. 5 LT-527 S/G 22 Level 0-100%

Channel No. 6 PT-526 S/G 22 Pressure 700-1200 psig Recorder No. 3 Inst. Parameter Range 8.2.3 Channel No. 1 FA-1095 Auxiliary Feedwater flow 0-300 gpm to S/G 23 Channel No. 2 LT-537 S/G 23 Level 0-100%

Channel No. 3 PT-536 S/G 23 Pressure 700-1200 psig Channel No. 4 FA-1097 Auxiliary Feedwater flow 0-300 gpm to S/G 24 Channel No. 5 LT-547 S/G 24 Level 0-100%

Channel No. 6 PT-546 S/G 24 Pressure 7.00-1200 psig SUP 90.3 Rev. 2 Salem Unit 2 8.3 Reactivity Computer Chart Recorders 8.3.1 Recorder #1 Channel A p-computer output Channel B N-41 excore detector current 8.3.2 Recorder #2 Channel A Loop 21 Tc 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 T TE 433 B 510-610 c

Channel B Loop 23 Th TE 433 A 510-610 8.3.5 Recorder #5 Channel A Loop 24 Tc TE 443 B 510-610 Channel B Loop 24 Th TE 443 A 510-610 8.4 Copies of the reactivity computer trace and saturation meter recorder will be marked and attached as data.

8.5 P-250 trend typewriter data covering the duration of this test will be attached.

  • 8.6 (see Appendix A for data points)

P-250 computer printouts of the incore thermocouple maps taken during the performance of the test will be attached.

8.7 P-250 computer printouts of the single pass partial core maps used during the test for core power determination will be attached as data.

8.8 A record of licensed operators participating and observing this test is attached as Appendix B.

8.9 Data acquisition steps need not be repeated for multiple test performance done for training proposes. Inscribe NA-TRANG on the initial lines for these steps.

However, flux map and incore T/C map printouts shall be taken during training runs, and shall be marked as training runs. It is recommended that the test engineer leave all other data acquisition systems (e.g. reactivity computer recorder) operative during the training runs as well.

SUP 90.3 Salem Unit 2 Rev. 2

/

9.0 PRECAUTIONS 9.1 Observe the precautions, limitations, and special operator instructions given SUP 90.0, sections 9.3 and 10.3. (ref. 2.2) 9.2 When RCS pressure drops below P-11 (1915 psig) manually block SI or the reactor will trip when the setpoint (1765 psig) is reached.

9. 3 Aux. spray should not be used during the measurement portion of this' test.

9.4 When RCS temperature is reduced to maintain the saturation margin, maintain Tc above 531°F.

9.5 This test should be performed concurrently with SUP 90.5 (natural circulation at reduced pressure), and they should be performed as few times as practical.

This limitation is imposed because of the reduced saturation temperature margin_

  • 9.6 experienced during these tests.

Maintain the operating parameters within the limits of the special operator instructions posted per SUP 90.0.

9.7 Should a reactor trip take place during the performance of this test, restart at least one reactor coolant pump (#23) prior to closing the reactor trip breakers .

SUP 90.3 Salem Unit 2 Rev. 2

INSTRUCTIONS 10.1 Start the P-250 T/W trend printing the points specified in Appendix A.

10.2 Start the Brush Recorders on high speed (125 I1Un/min}.

10.3 Turn off the pressurizer heater control group, by depressing the OFF pushbutton on its bezel at the main control board. Adjust pressure to 2100 psig.

10.4 Stop all four Reactor Coolant Pumps simultaneously. (Leave oil lift pumps running}

10.5 Verify Natural Circulation is established.

NOTE Expected plant *response is as follows:

Wide Range TH Increase to approximate 590°F Wide Range Tc Approximately constant or slight decrease (5-10°F)

Incore T/C's Increase to approximate 590°F Pressurizer Level Increase to approximate 35%

Natural Circulation will be stable when:

Incore thermocouples and loop Wide Range TH are stable and approximately equal.

~T between Wide Range TH.and '.!'.c is constant Steam Generator Levels are steady or varying slowly with constant feed.

10.6 Secure the pressurizer back-up heater groups 21 and 22 by pressing the MAN pushbutton and OFF pushbuttons on their respective bezels at the main control console. If branching from SUP 90.1, turn off control heater group, as well.

10.7 Maintain pressurizer level approximately constant after equilibrium conditions are reached by adjusting charging flow to match letdown and seal leakoff.

NOTE Maintain RCP seal injection flow per Operation Instruction OI II-1.3.l, "RCP Operation". See also SUP 90.0, para. 9.1.2 10.8 Once equilibrium is established adjust Brush Chart Recorder speeds as directed by the Test Engineer.

10.9 Begin obtaining short form incore T/C and SUilllnary flux maps periodically at instruction of the T/E for power level and distribution determination. Use P-250 test 41 for display of location of hottest incore T/C.

  • NOTE If SUP 90.5 is being run concurrently, begin recording required data for that SUP.

SUP 90.3 Salem Unit 2 Rev. 2

Depressurization is sensitive to RCS Temp.

When Tc+ Pressurizer Temp.+ due to insurge, increasing the depressurization rate.

10.10 Monitor RCS pressure to determine the rate of depressurization. Record the highest rate observed.

Pressurizer cooldown ____ °F/hr.

depressurization _ _ __,psi/hr.

(expected depressurization is 40-50 psi/hr.)

10.11 Observe the saturation meter when the saturation margin approaches 20°F increase steam dump or' charging flow, as specified by the Test Engineer.

NOTE Charging must be increased to maintain pressurizer level and pressure, when reducing Tc 10.12 Continue the depressurization and cooldown. Block low-pressure SI when pressure reaches the P-11 setpoint (1915 psig) to prevent tripping the reactor if the low pressure SI setpoint is reached. Close the PORV block valves 2PR6 and 2PR7.

10.13 When the test engineer is satisfied that sufficient data has been recorded to meet the requirements of this test (and those of SUP 90.5, if run concurrently), increase the saturation margin, by using charging flow and/or steam dump.

Do not allow pressurizer level to go above 70%.

_ _10.14 Once saturation margin is increased or pressurizer level reaches 70%, reactivate pressurizer heaters to increase RCS pressure back to 2235 psig.

NOTE Avoid overpressurizing, use auxiliary spray if necessary.

10.15 Verify pressurizer pressure control in AUTO (return heaters to AUTO). Reopen the PORV block valves closed in step 10.12.

10.16 Shutdown the reactor by inserting control bank D to zero steps using Manual Rod Control, in Bank D Select.

10.17 Restart all four reactor coolant pumps in accordance with Operating Instruction II-l.3.1, "RCP Operation" (reference 2.3.l), beginning with loop 23.

SUP 90.3 Rev. 2 Salem Unit 2 I

  • 10.18 Return pressurizer level to approximately 22% and restore charging flow control to AUTO.

10.19 Restore to normal the reactor protection system modifications made in prerequisites 3.5, 3.6, and 3.7, unless further testing is required. In this case, N/A the step and proceed to establish initial conditions for the next test.

10.20 Record the names of all licensed operators participating in or observing the test in Appendix B, as appropriate.

10.21 Retrieve and attach chart recordings and P-250 printouts per paragraph 8.2-8.6 (see also paragraph 8.8)

SUP 90.3 Rev. 2 Salem Unit 2 0

11. 0 TEST COMPLETION 11.l Comments 11.2 Changes to SPM
11. 3 Signature Test Engineer Date
  • Senior Shift/Shift Supervisor Date Quality Assurance Date Shift Technical Advisor Date
  • SUP 90.3

-12_ Rev. 2 Salem Unit 2

APPENDIX A The following parameters will be monitored during this test using the plant computer system.

Parameter Computer Point Pressurizer Pressure Channel 1 P0480A Pressurizer Level Channel 1 L0480A RCS Loop i:U Hot.Leg Temperature T0419A RCS Loop 21 Cold Leg Temperature T0406A RCS Loop 22 Hot Leg Temperature T0439A RCS Loop 22 C~ld Leg Temperature T0426A RCS Loop 23 Hot Leg Temperature T0459A RCS Loop 23 Cold Leg Temperature T0446A RCS Loop 24 Hot Leg Temperature T0479A RCS Loop 24 Cold Leg Temperature T0466A Steam Generator 21 Pressure P0400A

~

Power Range Channel 2 (Quadrant 2) NOOSOA Power Range Channel 3 (Quadrant 3) NOOSlA Power Range Channel 4 (Quadrant 4) N0052A Hottest Incore Therinocouple U0090A Pressurizer Surge Line Temperature T0482A NOTE: A redundant computer point may be substituted where available at the dis-cretion of the Test Engineer *

  • SUP 90.3 Salem Unit 2 Rev. 2

Appendix B SRO's Participating In Test SRO's Observing Test

  • SUP 90.3 Rev. 2 Salem Unit 2 Page l of 2

Appendix B (cont.)

RO's Participation In Test RO's Observing Test QA Review ~~--------------------------~

  • SUP 90.3 Rev. 2 Salem Unit 2 Page 2 of 2

DATA SHEET #1 INITIALS ACTION TAKEN SUP 90~7, Rev. 2 Salem Unit 2 DATA SHEET #2 Record the following temperatures at .the indicated intervals.

Main Control Time Auxiliary Room F.P. Room Control Area El. 100 After TriJ2 15 mins.

30 mins.

45 mins.

60 mins.

75 rnins.

90 mins.

105 mins.

120 mins.

Data By:

SUP 90.7, Rev. 2 Salem Unit 2

DATA SHEET 5.2 125-V Vital Battery and 120 vac Vital Instrument Power N (Battery Output ~~ltage) 2A Battery 2B Battery 2C Battery 28V Battery 120vac Vital 120vac Vital 120vac Vital 120vac Vital Inst Inst Inst Inst 125-V 125-V 125-V 2A 2B 2A Volts ..2B Volts 2C Volts 2D Volts Initial Conditions Immediately -

Followina B.O(T)

T + 10 min.

T + 20 min.

T + 30 min.

T + 40 min.

~-*

I T + 50 min.

T + 60 min.

T + 70 min.

T + 80 min.

T + 90 min.

T + 100 min.

T + 110 min.

T + 120 min.

Data by:

l.D NO

[/)

Pl I-'

(!)

a DATA SHEET 5.2 c

s.....  :

125-V Vi~al Battery Room Temperatures & H Level rt 2 125-V Vital Battery 125-V Vital Battery 125-V Vital Battery Room 2A Room 2B Room 2C Temp "2 * % of Temp "2 * % of ,Temp "2 * % of Initial Condition Scale Scale Scale T + 10 min.

T + 20 min.

T + 30 min.

T + 40 min.

T + 50 min.

I I-'

O'\

I T + 60 min.

T + 70 min.

T + 80 min.

T + 90 min.

T + 100 min.

T + 110 min.

T + 120 min.

CAUTION: If H approaches 50% of scale 8 (2% H ) turn exhaust fans on.

2 2 Remarks:

~ C/)

(!) c

<: Id Data by

\D No Reviewed by

.......

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