ML20206T776

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Rev 11 to Surveillance Procedure 6.3.8.4, Standby Liquid Control Manual Initiation Test Tank to Reactor Vessel
ML20206T776
Person / Time
Site: Cooper Entergy icon.png
Issue date: 08/18/1985
From: Brungardt R, Salisbury J
NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20206T643 List:
References
6.3.8.4, TAC-54682, NUDOCS 8607080224
Download: ML20206T776 (10)
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Text

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uuur t.n . . o u i. c.n n si,.aava ve r.nn a tuas ruu.oni-SURYEILLANCE PROCEDURE SLC MANUAL ISLTIATION IEST TANK TO REACTUh 6.3.8.4 VESSEL I. PURFOSE A.

To provide a detailed instruction for station personnel to check the SLC pump flow rate to the reactor vessel.

II. DISCUSSION A.

The SLC pump flow rate is verified during this test by using the SLC test tank.

The flow path during this test is from the SLC test tank, which is filled with demineralized water, through one pump and one squib valve to the reactor vessel. The' system is initiated from the Control Room to fire one squib valve.

III. REFERENCE MATERIAL A. USAR. .

1. Volume I,Section III, Subsection 9.0.

B. Flow Diagrams.

1.

B & R Drawing 2045; Core Spray and Standby Liquid Control System.

2.

B & R Drawing 2038; Reactor Building Floor and Roof Drain Systems.

3. B & R Drawing 2029; Demineralized Water System.

C. Vendor Manuals.

1.

G.E. Operations and Maintenance Instruction Volume III, Part II, Standby Liquid Control System. *

2. G.E.

Operations and Maintenance Instruction Volume IX, Part I, Standby Liquid Control System.

3.

Instruction Manual, Union Pump Company E-66-31-8; Standby Liquid Control Pump and Motor Data Book.

4.

Instruction Manual, Greer Products E-66-31-25; Nitrogen Accumulator.

D. Electrical Diagrams.

1.

B & R Drawing 3006; Auxiliary One Line Diagram.

2.

B & R Drawing 3139; Reactor Building Lighting Panels.

~

8607080224 860630 PDR P ADOCK 05000298' PDR Rsvised By/Date Reviewed by/Date p Rev Procedure gy&yrgyedBy/Date

, tj f w & c= ~ , Page 1 Of J. Ss11sbury 8/7/85 .R. Brungardt 8/18/85 f-//-p f 11 6.3.8.4 7- Pages

3. B'& R Drawing 3010; Vital One Line Diagram.
4. G.E. Drawing 920D225; Functional Control Diagram.
5. G.E. Drawing 791E262; Elementary Control Diagram. ,

D. Miscellaneous.

1. CNS Inservice Testing Program.

IV. PREREOUISITES-A. Plant air system in Mervice for the storage tank level indication.

B.

Demineralized water storage and transfer system available for a water supply to the storage tank.

C.

SLC actuation keylock control switch,in the STOP (center) position and-key removed.

D.

Special tools and nitrogen gas charging unit with pressure gauge available for charging the accumulators, as required.

E.

Pump discharge piping nitrogen accumulators charged to greater than 450 psig.

V. LIMITATIONS A.

Surveillance Requirements - Technical Specification Sections 4.4.A.2.c. ,

4.4.A.2.d...and 4.6.G. (IST).

1.

The operability of the SLC system shall be shown by the performance of the following tests:

a. At least once during each operating cycle, manually initiate one of'the SLC system pumps and pump demineralized water into the reactor vessel from the test tank. These tests check the ~

actuation of the explosive charge of the tested, loop,-proper operation of the valves, and pump operability. The replacement charges to be-installed will be selected from the same manu-factured batch as the tested charge. 'Both systems, including both explosive valves, shall be tested in the' course of two operating cycles. *-

B. Administrative Limits.  ;

1.

All discrepancies 'shall be . recorded in the' Shif t Supervisor's log. l

2. Attachment "B" shall be' used to record the test and filed as part .

of the station records.

13.

l' All testing shall be coordinated with the Control Room Operator.

w -

Proczdure Number' 6.3.8.4 1

-Date- f,~ l f, 713

_ Revision-11 Page 2 Of- . 7 Pages; i-

_.a.-- - - - . _ . . . . -.u_--_ .... _ - . - - - _ _ - - . - -

4. Any valve seals broken must be reported to the Shif t Supervisor who must enter status in the Valve Seals Log as per Conduct of Operations Procedure 2.0.2, Operations Logs And Reports. When the valve is returned to its normal positien, it must be resealed using numbered lead se,a1 and reported to the Shift Supervisor.

VI. PRECAUTIONS A. During pump operation check that piston seal leakoff is sufficient to prevent overheating the packing - glands. If excessive, notify the Maintenance Department to adjust.

B.

The SLC test tank should have a sufficient demineralized water level to prevent the SLC pump from losing suction.

C. Pump suction block valve SLC-10 from the SLC tank must not be' opened until after the fired squib valve has been replaced., Opening the valve before this would allow sodium pentaborate to gravity feed to the reactor when at zero pressure. ,

D.

The electrical leads on one squib have to'be removed to prevent firing both squib valves. -

E. Do not open SLC-23 wide open prior'to'the SLC pump start, during test tank recirculation, due to possible damage to the flow meter. However, SLC-23 must be at least three turns open to prevent chattering and cycling of SLC-RV-10RV and SLC-RV-11RV. Chattering and cycling reducer relief valve performance and reliability.

F. Be aware that the RWCU system will isolate on SLC initiation.

G. Sodium pentaborate concentration, in the SLC system demineralized water, must be less than 5 ppm before inj ecting into the reactor vessel.

VII. TEST EQUIPMENT A. Sufficient number of barrels to hold flush water from piping and to drain the test tank upon completion of the test.

VII

I. PROCEDURE

NOTE: For Inservice Testing, the SLC-CV-12 and SLC-CV-13 check valves shall have been exercised upon a successful surveillance test. A successful test is one which has no discrepancies.

NOTE: Recording of the exercised check valves (IST Review) shall be recorded at least once per cycle.

NOTE: Section A. prepares the system for the injection test and Section B.

completes the injection test and returns the system to ' standby status.

Prcetdure Number 6.3.8.4 Date  %. \%.95 Revision __1[, Page 3 Of; Pages 7

A. SLC System Flush.

1. Obtain permission and signature from the Shift Supervisor before starting the test.
a. Obtain the key from the Shift Supervisor for the keylocked local control pump switches (key number 40). *
2. Notify the Control Room Operator of the intent to perform the test.
3. Establish communications between the Control Room and SLC Pump Area.
4. Place the SLC system in TEST cn the safety system status panel.
5. Close and tag SLC-10, pump suction' block, from the SLC tank and return the broken seal to the Shift Supervisor.
6. Check closed SLC-25, SLC tank recirculation valve.

a.

Verify SLC-23 is three turns open..

Note: It is important to verify SLC-23 is at least three turns open in order to minimize SLC-RV-10RV or SLC-RV-11RV chattering and cycling. Chattering and valve cycling greatly reduces valve performance and reliability.

7. Open SLC-28, test tank suction valve.
8. Open SLC-26, test tank recirculation valve, and return the broken seal to the Shift Supervisor.
9. Verify the test tank level is approximately 6" from the top of the test tank (demineralized water).
10. With the key inserted in SLC Pump A (B) local control switch start SLC Pump A (B).

11.

Verify 1215 psig is indicated on the local rack pressure gauge.

Throttle SLC-23 as necessary. The Technical Specifications require greater than or equal to 38.2 gpm at 1215 psig.

12. Circulate water approximately 3 minutes and place the' local control switch for SLC Pump A (B) to the OFF position.
13. Repeat Steps 6. through 12. for SLC Pump B (A).

14.

Open RW-50, segregated drains to drain piping, test tank, and pumps to 55 gallon barrels located in the Reactor Building, 903'.

Note: -One barrel will not hold all of the drains. Coordination l between levels 903' and 976' may be required to prevent flooding the floor on level 976' while changing the barrels. l 1

-Procxdure Number 6.3.8.4 Date 5t ' 2 5 Revision 11 Page '4 Of 7 Pages- I

15. Open SLC-19 and SLC-20, SLC pump discharge piping drains, and SLC-29, test tank drain.
16. Close SLC-19, SLC-20, and SLC-29 when drainir.g is complete.
17. Close RW-50. -
18. Close SLC-28.
19. Open DW-199, demineralized water supply to fill SLC pumps, piping, and test tank.
20. When the test tank is about 1/2 full, open SLC-28.
21. Close DW-199 when the test tank is full.
22. With the. key inserted in.SLC Pump A (B) local co,ntrol switch, start SLC Pump A (B).
23. Circulate the water approximately 1" minute and place the 16 cal control switch for SLC Pump A (B) . to the OFF position.
24. Repeat Steps 22. and 23. for SLC, Pump B (A).
25. Have Chemistry sample the test tank for sodium pentaborate concen-tration, must be less than 5 ppm to proceed with test.

Note: If concentration is NOT less than 5 ppm the system will need more recirculation and flushing.

26. Close SLC-26.
27. Perform independent (Licensed Operator) verification that SLC-26 is closed and install a new seal as issued by the Shif t Supervisor.
28. Close SLC-23.
29. Return the key to the locked local pump switches to the' Shift Supervisor.'

B. SLC Manual Initiation - Test Tank To Reactor.

1. Notify the Electrician to remove the electrical leads from the squib valve not being fired.
2. Measure the test tank level and verify the level to be within 6" of the top of the tank.
3. Check open SLC-28.
4. Check closed SLC-10.

s

~

Proc; dure Number- 6.3.8.4 Date f~s Revision 'll Page 5 Of 7 Pages L

5. Check closed SLC-23.
6. Check closed SLC-25.
7. Notify the Control Room Operator to secure the .RK'CU system. .
8. Notify the Control Room to initiate the SLC system that is being tested.

Note: Alternate the systems and squib valves every operating cycle to ensure proper operation of both SLC pumps, i.e. system A pump and squib valve A should be operated together.

9. Record data on Attachment "B".
10. After the pump has run 1 minute and flow has been verified through the squib valve that was-fired, notify the Control Room to stop the SLC system.
11. Measure the level from the top of the test tank and compute the

~

pump flow rate for the I minute run. Enter the data on Attachment "B".

12. Close SLC-28.
13. Perform independent (Licensed Operator) verification that SLC-28 is closed. '
14. Notify the Electrician to replace electrical lead to the squib valve that was not fired.
15. Replace the fired squib valve as per Maintenance Procedure 7.2.2'5.

Caution: Ensure that the fired squib valve has been replaced before opening SLC-10, see Precaution C.

16. Open SLC-10.
17. Perform independent (Licensed Operator) verification that SLC-10 is open and install new valve seal as issued by the Shift Supervisor.
18. Open SLC-23 three turns.
19. Return the system to standby status as per System Operating Proce-dure 2.2.74,Section VII.B.
20. _ Notify the Control Room Operator that the test has been completed.
21. Return the safety system status panel to normal.
22. Notify the Shift Supervisor that,the test has been completed.

Prsecdure Number. 6.3.8.4 Date Q lR 1$ Revision 11 Page 6 Of 7 Pages

IX. ATTACHMEh"IS A. Not applicable.

B. SLC Valve Initiation Test Tank To Reactor Vessel Data. Sheets.

. i i

\

Percedure-Number 6.3.8.4

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Date Q . \ 9. 9,5 Revision , 1I Page 7 Of -7 Pages

. . . . . . . . . ~ ~ . . -......o.....-..., . - . . . - . . -

i ATTACHMENT "B" SLC MANUAL INITIATION TEST TANK YO REACTORl SURVEILLANCE PROCEDURE 6.3.8.4 UESSEL FUNCTIONAL TEST NOTE: For Inservice Testing, check valves SLC-CV-12 and SLC-CV-13 shall have been exercised upon a successful surveillance test. A successful test is one which has no discrepancies.

Recording of the exercised check valves (IST Review) shall be recorded at least once per cycle.

3 e

PROCEDURE A. SLC System Flush. DATACllECK_l.

XXXXXXXXXX

1. Obtained permission and signature from Shift. Supervisor. '
a. Obtained key number 40 from Shift Supervisor key -

XXXXXXXXXX locker. .

2. Notified Control Room Operator of intent to perform test.'
3. Established communications between Control Room and SLC - ----

XXXXXXXXXX Pump Area. ~

, 4. Placed SLC system in TEST on safety system status panel.

5. Closed and tagged SLC-10; returned broken valve seal to -

_-- XXXXXXXXXX Shif t Supervisor. ,

6. Checked closed SLC-25. ~
a. Verified SLC-23 three turns open. - , - - --
7. Opened SLC-28.
8. Opened SLC-26; returned broken seal to Shift Supervisor.
9. Verified test tank 1,evel S 6" from top of tank. --- -- ------- -

i 10. Started SLC Pump A (B) with local control switch.

11. Verified > 38.2 gpm at 1215 psig pump discharge pressure.
12. Circulated water
  • 3 minutes and stopped Pump A (B). ------------- ---
13. Repeated Steps 6. through 12. for SLC Pump B (A).
14. Opened RW-50 to 55 gallon barrel.
15. Opened SLC-19, SLC-20, and SLC-29. ------ - -----
16. Closed SLC-19, SLC-20, and SLC-29 when draining is completed.
17. Closed RW-50.
18. Closed SLC-28. ---- ----- -- -----------
19. Opened DW-199 to test tank.
20. Opened SLC-28 when test tank is about 1/2 full.
21. Closed DV-199 when test tank is full. -- --------------------- ---
22. Started SLC Pump A (B) with local control switch.
23. Circulated water about I minute and stopped Pump A (B).

, 24. Repeated Steps 22. and 23. for SLC Pump B (A). -- --------------

25. Had Chemistry sample tank tank: ppm.
26. Closed SLC-26.
27. Performed independent (Licensed Operator) verification that --------------- XXXXXXXXXX SLC-26 is closed and installed,new valve seal as issued by XXXXXXXXXX Shift Supervisor.
28. Closed SLC-23. =
29. Returned key to Shift Supervisor (key number 40).

+

i Procedure Number 6.3.8.4 Date 2-if-1!T Revision Page Of 11 1 3 Pages

4 .

SLC MANUAL INITIATION TEST TANK TO REACTOR ATTACHMENT "5" SURVEILLANCE PROCEDURE 6.3.8.4 VESSEL l

i FUNCTIONAL TEST 4

h PROCEDURE DATA CHECK ;

B. SLC Manual Initiation - Test Tank 'lo Reactor. -

XXXXXXXXXX

1. Notified Electrician to remove electrical leads from squib XXXXXXXXXX valve not being fired. - - - ----- - ----
2. Measured test tank level and verified level to be within XXXXXXXXXX 6" of top of tank.
3. Checked open SLC-28. --- -

= - - - - - - -------------

4. Checked closed SLC-10,
5. Checked closed SLC-23.
6. Checked closed SLC-25. -- - =-- -- -
7. Notified Control Room Operator to secure RWCU. system.

i 8. Notified Control Room to initiate SLC system being tested; ,

XXXXXXXXXX System: . -

9. Recorded data. *
10. Verified SLC system off.
11. Measured test tank and computed flow rate. ---- -------------

1

12. Closed SLC-28.
13. Performed independent (Licensed Operator) verification that XXXXXXXXXX SLC-28 is closed. -- - - - - - - - - - - - - - -- -- -----------
14. Replaced electrical leads on unfired squib9'alve.
15. Replaced fired squib valve.
16. Opened SLC-10. --- -

i 17. Performed independent (Licensed Operator) verification that __

XXXXXXXXXX SLC-10 is open and installed new valve seal as issued by X%XXXXXXXX Shift Supervisor. ------- -- ------ -----------------------

! 18. Opened SLC-23 three turns.

19. Returned system to standby status.
20. Notified Control Room Operator test is completed. --- - ----- ---
21. Returned safety system status panel to normal.

4

22. Notified Shif t Supervisor test has been completed.

l PUMP A DATA PUMP B DATA I

Test Tank Level-Stop Test Tank Level Stop Test Tank Level Start Test Tank Level Start Level Decrease Level Decrease GPM Pump Flow CPM Pump Flow Pump Discharge Pressure Pump Discharge Pressure NOTE: 1" level in SLC Test Tank equals.4.4 gallons.  ;

Technical Specifications required 1 38.2 gpm flow rate.at 1 1215 psig pump discharge pressure.

i l

Procedure Number 6.3.8.4 Date 9- 19 -3!$ Revision 11' Page 2 Of 3 Pages l

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. . ~ . . ...~...........v....u......., ..n..u..-

SLC MANUAL INITIATIOS IEST TANK 10 REACTOR ATTACHMENT "B" SURVEILLANCE PROCEDURE 6.3.8.4 VESSEL FUNCTIONAL TEST Discrepancies:

Oparator /

Date Shift Supervisor / Permission To' Start Date ,

Shift Supervisor / Test Complete And Reviewed Date Shift Supervisor / NCR Written If Required Date Work Item (s) Initiated If Required IST Review. / Satisfactory Completion Date Raviewed By /

Date Preccdure Number 6.3.8.4 Date C.*I<'~ Revision 11 Page 3 Of' 3 Pages

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