ML20245D066

Rev 4 to Surveillance Instruction SI-673, RCS Level Verification Using Sight Glass or Tygon Hose

ML20245D066
Person / Time
Site:	05000000, Sequoyah
Issue date:	09/15/1987
From:	Anthony J TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML082490787	List: ML20245D056 ML20245D059 ML20245D066 ML20245D071 ML20245D085
References
SI-673, NUDOCS 8711040345
Download: ML20245D066 (10)

Text

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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR, PLANT SURVEILLANCE INSTRUCTION SI-673 REACTOR COOLANT SYSTEM LEVEL

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VERIFICATION USING SIGHT GLASS OR TYGON HOSE Units 1 & 2 REVISION 4 PREPARED BY:

J. M. Anthony

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RESPONSIBLE SECTION:

Operations l

REVISED BY:

Spencer Childers

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SUBMITTED BY:

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Rf ~ nsibli Section Supervisor PORC REVIEW DATE.

SEP 151987 2

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1 APPROVED BY:

4 Plant Manager

-l DATE APPROVED:

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Reason for revision (include all Instruction Change Form Nos.):

Revised to add Radiochem Lab sampling requirement per CCTS NCO 870077005.

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l The last page of this instruction is number:

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I 8711040345 871002 PDR ADOCK 05000327 4

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SEQUOYAH NUCLEAR PLANT I.

l PLANT INSTRUCTION REVISIONJ0G r

SURVEILLANCE INSTRUCTION SI-673 REVISION Dati Pages REASONFORREVISIONkINCLUDECOMMITMENTSAND

,l LEVEL App.oved Affected ALL ICF FORM NUMBERS) j 0

06/29/81 ALL Title Chg I

1 10/12/84 ALL b

Revised to increase minimum reactor coolant system water level during filling and draining 2

08/29/86 All to el 695' 6" when RHR pumo(s) running I

Revised to expand scope to include flushing of sightglass, completed references, add Appendix A 3

04/24/87 All instructions for flushino sightolass.

I SEP 1 5 Lc8/ 1,3,5,6 ment per CCTS NCO 870077005.

Revised to add Radiochem Lab sam,pling require-4 s

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.I in The purpose is to visually verify the reanter coolant syw;m level 2;

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.I 695 feet 6 inches to prevent the loss of suction pressure'to runt:ing

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RHR pump (s) and to docu;nent the reactor coolant system water level i I

during filling and draining of,the, reactor coolant systec $<h during i

modes 5' and 6 'oparation. Appendir,A'will. provide in(structWgs for flushingofthes.yhkiasslqlordertoensurethesightgl61tsbes.not get plugged up, thug thsiii 1.xacchrate level indication. MWoched j

Lab will. sample the fluid i.adlyze debris from the sight glass 3

flush.

This'SI does not f Itt11 any Tech. Spec. surveillance s

requirements.-

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2.0 REFERENCES

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2.1 S01-70.1C W

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2.3 SOI-6818 2.4 SON 68.Ir i

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2.5 AOI-14G N

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3.0 PRERE0QISITES y' "

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y 3.1 i$1ght glass and/or tygon hose for indicating RCS lovel is

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inservice per SOI-68.1C.

a 4.0 PRECAUTIONS 4.1 Do not drain below el 695 feet 6 inches ; th RHR 6Mp(

running.

4.2 Remove sight glass and/or tygon hose from'servied hen pressu,12er cold calibration level is indicating 51. and Jd.rvWpc to wold 3

over-fli,ving sight glass (close 68-551). (M[ximumsightJ1 ass E-indication is el 705-5 13/16".)

9-When flooding refueling cavtry, remove sight glass and/<d 'tyy,n nu 4.3 tr g

hose per 501-74.10.

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4.4 When fill,ing,RCS, remove sight glass and/or tygon hose from i bq

.l service per S0I,68.18.

4. c.,

Caserve applicabig radiation protection instructions when j.

~E performing RCS sig]it glass and/or tygon host, levei indicatio,p,

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locally.

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4.6 If RHR pump (s) lose suction, refer to A01-14G.

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5.0 SPELIAL TEST E M PJ @ {

6.0 INSTRUCTIU'S 3

- 6.' Y3 During period of time sight glass and/or tygon hose is in service

,q complete Data Sheet 1 at least once per 30 minutes.

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6.2 If' suction to'RHR pump (s) is lost, refer to AOI-14 section G.

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1. - '63 Perform flushing of sightglass per Appendix A once per week.

I;!5, o : 7.0 -ACCEPTANCE CRITERIA h

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?e 7.1 Reector vessel level is maintained.)_695' 6" el.

Immediately ss _

. notify the SRO and UO if level decreases below 695' 6".

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SI-673 Page 3 f

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Revision 4 i

DATA PACKAGE COVER SHEET Page 1 of.1 REACTOR COOLANT SYSTEM LEVEL VERIFICATION USING SIGHT GLASS OR TYGON HOSE Unit Performed By Date Time Started Date Time Completed (AU0 U0)

List of data sheets attached.

i Instruction No.

Data Sheet No.,,

No. of Pages t

NOTE:

Refer to data sheet for, evaluation of data acceptance' criteria.

Were Acceptance Criteria satisfied?

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No s

Verified by Signature / Title I

NOTE:

If Acceptance Criteria were not satisfied, notify Senior Reactor l

Operator (SRO).

I Remarks:

Reason for test:

Plant condition (explain)

Other (explain) i Review and Approval of Test Results SR0 date Review of Test Results STA Date Remarks:

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SI-673 J

Page 4 Revision 3

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' DATA SHEET 1 Page 1 of 1 REACTOR COOLANT SYSTEM LEVEL VERIFICATION USING SIGHT GLASS OR TYGON HOSE i

SRO Approval SRO l

Filling Level Observed at:

Unit Draining 5,,,

(1) Sight Glass Date 4

Refueling (2) Tygon Hose Sheet of j.

(3) Aligned per 50I-68.lC Observethefollowingguidelinesfor[evels:

NOTE:

Minimum level with RHR pump (s) on el 695' 6" Maximum level when S/G manways are open 696' 4" (overflow will occur at el 696' 8".)

Maximum level for Sea.1 Table work or RCP seal work el 699' (RCP flange 699' 3", Seal Table 702' 1 1/2".)

IF ANY of these levels are exceeded IMMEDIATELY notify the SR0/SE.

Time /Date Elevation Initial Time /Date Elevation Initial

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SI-673 Page 5 Revision 4 Appendix A Page 1 of.3 HEEKLY FLUSHING OF SIGHTGLASS Caution: Coordinate work with Lead UO and Radiochem Lab.

I Note: Phone near tygon bose connection (6354) l Note: Doubl.e person verification is required.

Note: Radio: hem Lab support required.

at Radiochem Lab. Analyst g

SR0 approval SRO 1.0

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Verify RCDT is not full and pressure is less than 4 psi.

2.0

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Open valve 68-550, flush for approx. 2 minutes.

3.0

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Verify RCDT level increases l

4.0

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Close valve 68-550 5.0

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Isolate tygon hose valve and V-2 l

4 6.0

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Disconnect and drain tygon hose to bucket or floor drain.

7.0

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Verify valve 68-549'open 8.0

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Verify valve 68-551 open 9.0

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Ensure Radiochem Lab personnel ready to obtain sample and open valve V-2 and flush to bucket or floor drain.

1 Radiochem Lab personnel will obtain sample while Flush is in progress.

(This will flush piping from Lp #1 crossunder drain piping.)

10.0

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Close valve V-2 11.0

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Close valve 68-551 12.0

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Open valve V-2 (This will drain the sight glass).

13.0

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Close vi'Ive V-2 I

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Appendix A Page 2 of. 3 WEEKLY FLUSHING OF SIGHTGLASS 14.0-

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Open valve 68-551-(This will refill sight glass)-

15.0-

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Close valvo 68-551

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Open valve V-2 (Drain sightglass) and assure Radiochem l

Lab obtains second sample Note:.This completes flushing of Sightglass.

i Note: ;The following. steps will place the Sightglass back in service.

-17.0

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Close valve.Vi2 and attach tygon hose. '

'18.0

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_Open valve 68-551

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Verify level in sight glass

'20.0

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Open valve V-2 and Tygon hose valve, compare level in tygon hose with sight glass level-(UO to verify).

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Ensure air bubbles are not trapped in tygon hose and j

21.0 sightglass is free of, obstructions.

22.0

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Close valve V-2.and tygon hose valve (This takes.the tygon out of service) j 23.0

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Ensure Caution Order is on the Tygon Hose Valve.

j' Acceptance criteria:

The piping from the RCS Lp #1 Crossunder leg is free of debris i

and the sightglass has no visible obstructions.

If not, immediately notify the UO and/or SE/SRO.

L' Radlochem Lab will analyze the sample obtainedsto determine i

content of any debris and particulate.

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Aopendix A PEge 3 of 3

'SI-673 Page 7

• 85 3 3 WEEKLY FLUSHDIG OF SIGHTGLASS I

ELE 7ia I

( c: 705 '-9")

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(= 693'-6")

V-3

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ELE 693 l

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INSIDE POLAR CRANE WALL RCS CROSS UNDER LCOP 1 I

68-549 63 550 x

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TO RCDT I

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r CCUPLING FOR 68-551 V-2 I

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3 ATTACliMENT S l

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