ML20154Q552

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Rev 0 to Station Procedure 44.403.10, Drywell Cooler Drain Flow Rate Functional Test
ML20154Q552
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 07/24/1985
From:
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20154Q544 List:
References
44.403.10, NUDOCS 8603210192
Download: ML20154Q552 (6)


Text

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MC-1 SP Number 44.403.10

. Revision O Ef f Date 9/ty/yf Signature Date Section Head /C A 8/ 4-t u a 7/23//3 ' TPC No. Date Eff Date Expr Quality Control , 7 >

Div. Mgr . [ 48 Plant Mgr. //~w 2I DRYWELL COOLER DRAIN FL0k' RATE FUNCTIONAL TEST 1.0 PURPOSE To provide a detailed instruction for station personnel to perfom a functional )

test of the Drywell Cooler Drain Flow Switches 1T47-FS029A and B to satisfy the requirements of Reference 11.1.

2.0 RESPONSIBILITY The I6C Engineer shall be responsible for ensuring the proper implementation of this procedure.

1 SR2-1021.400-6.421 m l

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JUL 241985 0603210192 860318 PDR ADOCK 05000322 P PDR

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3.0 DISCUSSION

, \ 3.1 Flow switches IT47-FS029A and B measure the volume of water condensed in

\ the Drywell by unit coolers IT47-UC017A and B. A high flow through these >

{ flow switches is indicative of high drywell humidity which may be the \

. i result of a primary nuclear process barrier leak. Alarms are provided on panel IH11*PNL-VC2 in the Main Control Room to provide early indication of g a small steam leak in the Primary Containment.

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\ 3.2 Flow switches 1T47-FS029A and B are Magnetrol flow sensitive disk type

} instruments. Fluid flow displaces a piston and that movement is }

proportional to the rate of fluid flow. Magnetic interaction with the

{ piston stem actuates the alam switch.

3.3 The following annunciators, located on panel lHil*PNL-VC2, alarm during

/ the performance of this procedure:

l j Annunciator No. Description l

3055 (C-1 on 2B) DRYWELL UNIT CLR-17A FLOW HI 3056 (C-2 on 2B) DRYWELL UNIT CLR-17B FLOW HI 3.4 The fluid used in the performance of this procedure will eventually drain into the Drywell Floor Drain Tank, IG11*TK057. Because of this the following annunciators may alarm during the performance of this procedure:

Annunciator No. Description Location ,

0012 (D-7 on A7) DW FLOOR DRN TK lH11*PNL602 0423 (E-10 on 209C) RW SUMPS TROUBLE lHil*MCB01

( 4826 (A-2 on ZC) DRYWELL FLOOR DRAIN TK LEVEL HI IGil-PNL47

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3.5  !

Table of Contents.

'N- 8.1 Functional Test of Flow Switch IT47-FS029A

\ 8.2 Functional Test of Flow Switch IT47-FS029B N-- _ - - -

4.0 PRECAUTIONS .

4.1 Steps indicated in this procedure for each instrument shall be performed in sequence.

l 4.2 The Watch Engineer shall be notified whenever a procedural step cannot be completed as stated, or if any other problem develops during the test.

l 4.3 The use of portable radio frequency generating communications equipment in the Main Control Room, Radwaste Control Room, Relay Room, Emergency Switchgear Room, and Diesel Generator Room is prohibited.

SP 44.403.10 Rev. O Page 2

  • 5.0 *PREREOUISITES 5.1 Obtain approval to perform this procedure from the Watch Engineer in accordance with the Surveillance Program, SP 12.016.01.

5.2 Coordinate testing with the NSO.

5.3 Obtain an RWP, if required.

5.4 This procedure may be performed during all plant operating conditions.

However this procedure is not required to be performed when the Drywell is inerted.

6.0 LIMITATIONS AND ACTIONS 6.1 If the instrumentation being tested does not respond as specified in this procedure, then the LCOs of Reference 11.2 apply.

7.0 MATERIALS OR TEST EQUIPMENT 7.1 Polyethylene tubing (tygon) or equivalent.

7.2 Demineralized water source.

8.0 PROCEDURE INITIALS /DATE 8.1 Functional Test of Flow Switch IT47-FS029A.

8.1.1 Verify that all prerequisites have been satisfied.

7 8.1.2 Establish communications between flow switch IT47-FS029A, located on elevation 63 feet in the drywell, aid the main control room.

7 8.1.3 Inform the NSO of the intent to perform a functional test of flow switch IT47-FS029A. j 8.1.4 Record the present time. The time is recorded to help determine the length of time the instrument was out of service, j

Time 8.1.5 At the IT47-UC17A (CLC-6D) drip tray, locate the drain hole to the flow switch and insert about one foot of polyethylene tubing into the drain. Drain is inside the door adjacent to FNilA.

j 8.1.6 Connect the demineralized water source to the polyethylene tubing.

j 8.1.7 Verify that annunciator no. 3053 (C-1 on 2B),

DRYWELL UNIT CLR-17A FLOW HI, located on panel IH11*PNL-VC2, is clear.

/

SP 4).403.10 Rev. O Page 3

NOTE: Allow the flow sw!tch at least 3 minutes to respond to changes in flow.

. 8.1.8 Allow the demineralized water to flow into flow

.. switch IT47-FS029A until annunciator no. 3055 (C-1 on 2B), DRYWELL UNIT CLR-17A FLOW HI, located on panel lHil*PNL-VC2, alams. The flow should be at a rate sufficient enough to trip the flow switch.

(The flow switch should trip at approximately 1.3 CPM.) j 8.1.9 Isolate the demineralized water source. j 8.1.10 After at least three minutes verify annunciator no.

3055 (C-1 on 2B), DRYWELL UNIT CLR-17A FLOW HI, located on panel IH11*PNL-VC2, is clear. j 8.1.11 Disconnect the demineralized water source and the polyethylene tubing from the drip tray of IT47-UC17A (CLC-6D) . j 8.1.12 Record the present time. The time is recorded to help determine the length of time the instrument was out of service.

7 Time 8.1.13 Inform the NSO that testing of flow switch IT47-FS029A is complete. j 8.2 Functional Test of Flow Switch IT47-FS029B. ,

8.2.1 Verify that all prerequisites have been satisfied.

j 8.2.2 Establish communications bcts.r- f:. switch '

IT47-FS029B, located on ele h tion 63 feet in the drywell, and the main control room.

j 8.2.3 Inform the NSO of the intent to perform a functional test of flow switch IT47-FS029B. j 8.2.4 Record the present time. The time is recorded to help determine the length of time the instrument was cut of service.

j Time

.J 8.2.5 At the IT47-UC17B (CLC-7B) drip tray, ' locate the drain hole to the flow switch and insert about one foot of polyethylene tubing into the drain. Drain is inside the door adjacent to FN12A.

j SP 44.403.10 Rev. O Page 4

8.2.6 Connect the demineralized water source to the polyer.hylene tubing.

7 8.2.7 Verify that annunciator no. 3056 (C-2 on 2B),

'. DRYWELL UNIT CLR-17B FLOW HI, located on panel lHil*PNL-VC2, is clear.

f NOTE: Allow the flow switch at least 3 minutes to respond to changes in flow.

8.2.8 Allow the demineralized water to flow into flow switch IT47-FS029B until annunciator no. 3056 (C-2 on 2B), DRYWELL UNIT CLR-17B FLOW HI, located on panel IHil*PNL-VC2, alarms. The flow should be at a rate sufficient enough to trip the flow switch.

(The flow switch should trip at approximately 1.3 CPM.) 7 8.2.9 Isolate the demineralizd. water source.

f 8.2.10 After at least three minutes verify annunciator no.

3056 (C-2 on 2B), DRYWELL UNIT CLR-17B FLOW HI, located on panel 1H11*PNL-VC2, is clear.

7 8.2.11 Disconnect the demineralized water source and the polyethylene tubing from the drip tray of IT47-UC17B (CLC-7B). j 8.2.12 Record the present time. The time is recorded to help determine the length of time the instrument was out of service. j Time 8.2.13 Inform the NSO that testing of flow switch IT47-FS029B is complete.

f 9.0 ACCEPTANCE CRITERIA 9.1 The flow switches and annunciators trip and reset as noted in the procedure.

10.0 FINAL CONDITIONS 10.1 Submit all test results in accordance with the Surveillance Program, SP 12.016.01.

11.0 REFERENCES

11.1 Technical Specifications, Section 4.4.3.1.C.

11.2 Technical Specifications, Section 3.4.3.1.C.

SP 44.403.10 Rev. O Page 5 l

lg.

h 11.3 FB-23B, Flow Diagram System IT47 Primary Containment Air Cooling System.

, 11.4 ESK-10ANV03, S&W Elementary Diagram, lH11*PNL-VC2 Annunciators.

. 11.5 Magnetrol Flow Switch Instruction Manual, Model F503-A, SR2 No. 1472-1.

12.0 APPENDICES N/A 4

SP 44.403.10 Rev. O Page 6

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