ML20207N326

Rev 0 to 2L-517 E, Steam Generator a Level Channel Electronics

ML20207N326
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	08/12/1985
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20207N107	List: ML20207N105 ML20207N320 ML20207N326
References
2L-517-E, NUDOCS 8701140131
Download: ML20207N326 (13)

Text

2L-517 E Rev. O o

UNlT 2 STEAM GEN A LEVEL CHANNEL ELECTRONICS 2L-517 E LATEST PAGE REVISIONS PAGE REVISION DATE 1

0 AUG 121985 2

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Appendix A A-1 0

A-3 0

A-4 0

A0G 121985 D

b 0

AMROVED[T DATE Completion reviewed by Date Foreman Completion reviewed by Date Q.C.

OdSKh[h$h[95 PDR r

13001 1

o 2L-517 E Rev. 0 AUG 121985 STEAM GEN. A LEVEL CHANNEL ELECTRONICS COMPUTER I.D. No.

2L**-FW*0517

1.0 PURPOSE

To establish a procedure that allows troubleshooting or calibration of level channel 2L-517 electronics while

>e'isuring that the protective function of the channel

':e performeo and inadvertant reactor trips and safety injections are avoided.

2.0 REFERENCES

2.1 S&L Dwgs. No. 22E-2-4943E, AB f,V'h. )'

2.2 Technical Specifications Se J"

g OTE 7

For purpo Se of satisfying the Tech. Spec.

requirements for refueiing channel calibration both this procedure and 2L-517T must be completed.

3.0 PREREQUISITES

3.1 The plant may be in any Mode to perform this procedure.

4.0 PRECAUTIONS

4.1 Trout'eshooting or calibratior, may not be performed on more than one protection set (I, II, III or IV) at a time, unless the unit is in cold shutdown and the reactor trip breakers are open.

5.0 LIMITATIONS AND ACTIONS:

5.1 This procedure is for work or surveillarce on the electronics only.

For any work or surveillance on the transmitter use 2L-517 T.

5.2 Only one channel may be worked on at a time, unless the unit is in cold shutdown and, the reactor trip breakers are open.

5.3 If any SR or TS component is cut of tolerance, initiate an instrument discrepancy report to document the problem.

13001 2

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2L-517 E Rev. 0 5.4 If, during troubleshooting, a reactor protection channel alert is actuated from another protection set, the work must be terminated and all channels returned to the Normal (untripped) mode, except those tripped under the authority of AGP-9.

NL1E.

The loop must be intact and capable of performing it's protective function or the bistables MAY NOT be untripped.

5.5 Component repairs cannot be made during surveillance testing. A work request must be written and approved prior to doing repair work.

5.6 If working on this loop under a W/R, use appropriate pages of this procedure to document calibration.

5.7 Refer to the attached appendix for calibration data sheets for setpoints and/or scaling.

5.8 Verify calibration date on test equipment is current.

5.9 Rack instrumentation will have to be energ% eg'tQgc 3

least one half hour to achieve s ytB

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6.0 PROCEDURE

6.1 Record the d ing information.

W/R #

Date 5.2 Applicable precautions and prerequisites verified.

6.3 Obtain the Shift Supervisor's permission.

(Sup. sig.)

6.4 Inform the unit NSO that work is conunencing and place the loop cal in progress label on the main control board indicator for this loop.

l 6.5 Reactor trip breakers open.

(circle one) YES/NO i

NOTE If the above response is YES, proceed with Step 6.7, and N/A Step 6.6.

If the response is NO, proceed with Step 6.6.

CAUTION Inform Shift Engineer that reactor trip breakers must remain open during this surveillance if they are open when it was started.

i 13001 3

l

2L-517 E Rev. 0 AUG l' 1985 2

6.6 Verify the following status lights are NOT lit on the MCB.

f l

SG A HI LVL Turbine Trip 2LC-519A SG A HI LVL lurbine Trip 2LC-518A SG A LO-LO LVL Reactor Trip 2LC-519B SG A LO-LO LVL Reactor Trip 2LC-518B SG A LO LVL Reactor Trip 2 LC-518C A ST-FW FLO M/M Reactor Trip 2FC-510B A ST-FW FLO M/M Reactor Trip 2FC-5118 6.7 Enter computer surveillance for loop 517.

6.8 Place the following bistables in the up (tripped) position.

RACK 16 SG A HI LVL Turbine Trip 2BS-517A SG A LO-LO LVL Reactor Trip 2BS-517B SG A LO LVL Reactor Trip 2BS-517C 6.9 Verify the following status lights are LIT on the MCB.

SG A HI LVL Turbine Trip 2LC-517A[..

SG A LO-LO LVL Reactor Trip 1,5{ll SG A LO LVL ReactorTrp,j M

.. f tp p, 6.10 Check for N._.

d.

6.1 C

position.

6.12 Teshoot, repair, or calibrate using the appropriate sections of the attached appendix A to this procedure.

NOTE 2L-517 electronics must be fully operational before continuing with this procedure.

6.13 Place 2CT-517 in the normal position.

6.14 Place the following bistables in the down (normal) position.

RACK 16 SG A HI LVL Turbine Trip 2BS-517A SG A LO-LO LVL Reactor Trip 2BS-517B SG A LO LVL Reactor Trip 2BS-517C 6.15 Verify test sequence violate annunciator is cleared.

(This constitutes second verification of the CT switch) 6.16 S/G A narrow range level between 25% and 70%.

(circle one) YES/No NOTE If the above response is YES, proceed with Step 6.18, and N/A Step 6.17.

If the response is NO, proceed with Step 6.17.

13001 4

2L-517 E Rev. O AUG L 21985 6.17 Perform second verification per the following.

Verification must be performed by a second person, apart in time f rom the initial restoration of the

{

equipment.

a.

Verify the following bistables in the down (normal) position.

RACK 16 SG A HI LVL 2BS-517A SG A LO-LO LVL 28S-517B SG A LO LVL 2BS-517C CAUTION Ensure status lights are working properly by pressing the test push button.

6.18 Record the condition of status lights 2LC-517A, 2LC-5178, 2LC-517C.

If S/G A narrow range level is between 25% and 70% and all three lights are NOT lit, this constitutes second verification for 2BS-517A, 285-5178, and 2BS-517C. Push the lamp test button to prove lights.

2LC-517A LI1/NOT (circle one) 2LC-5178 LIT /NOT (circle one) 2LC-517C LIT /NOT (circle one) 6.19 Exit computer IM surveillance for loop 517.

6.20 Notify Shif t Supervisor and NSO that work on the channel is complete, and remove the loop cal in progress label and return it to the foreman.

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M)pj?J 6.21 Record test and measurement equipment us d 4, sg!

n what it was 3 point checked again 8

i.

c n R U W "

y [d N 5P T&M EauiD. assEf ED V

6.21 Calibration completed by:

/

Technician Date

/

Technician Date 13001 5

~

2L-517 E o

Rev. O

~

AUG 12.995 7.0 ACCEPTANCE CRITERIA:

7.1 The overall loop tolerance for this loop is 2%.

Individual component tolerances are stated in the Zion Station Instrument Tolerance Requirements, j

App. D of the ZIAP.

j 7.2 Record IDR #'s for any components which were found out of tolerance. N/A if none were issued.

l IDR #'s 7.3 The foreman will evaluate the algebraic summation of the "as found" component errors from the sensor to the final trip devices.

If the overall loop tolerance was exceeded a DVR shall be initiated by the foreman.

DVR RE0VIRED

/

yes no pORINICIE ENa*n "OMD!

13001 6

2L-517 E Rev. 0 AUG 121985 Instrument No.

2LM-517 (Isolator)

Location Rack 16 Scaling Check Point 2TP-517-2 (Rack 34)

Remarks:

IMO I'JO p

m l h' i

\\p%

W.

7y ACTUAL REQUIRED AS FOUND AS LEFT p:)

IN IN OUT OV?)8 (f

VDC VOC / VDC VDC VDC

. c:'9 g,ju 1.000 /1.000 g.

2.000 /2.000 fW 3.000 /3.000

.g 4.000 /4.000

.g, 5.000 /5.000 Remarks: Safety Related:

A-1 13001

2L-517 E Rev. 0 AUG 121985 Instrument No.

2LC-517A (Comparator)

Instrument No.

2LC-517B (Comparator) location Rack 16 Location Rack 16 Scaling Scaling Check Point 2TP-517-1 Check Point 2TP-517-1 Remarks: Also check proper oV ration of red bistable Remarks: Also check proper operation of red histable switch light.

switch light.

O 1L&

OUTPUT NO. 1

(

OU1PUI NO. 2

\\c D

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AS FOUND AS LEFT Ii' AS FOUND AS.LEFT

},Y-Tj.

i{Ni.'WP:y,jj VDC VOC

/

VDC VDC VDC

/

VDC Trip 70 3.800

/

F, ',",I I Trip 10 1.400

/

Reset 69 3.760

/

i

'[ Reset 11 1.440

/

I '.Y' fes.3

)t.;,.i C *5

p...a Dial Setting

/

?bn..., Dial Setting

/

G.....)3 l5, s.

Remarks: Safety Related:

. lie' marks :

Safety Related:

A. 2 i,nm

2L-517 E Rev. 0 AUG l 'd 1985 Instrument No.

2LC-517C (Comparator)

Instrument No.

2LI-517 (Indicator)

Location Rack 16 Location MCB Scaling Scaling 4-20 MA=0-100%

Check Point 2TP-517-1 Check Point Visual Remarks: Also check proper operation of red bistable Remarks:

switch light.

ggug i

95

\\

%. Y..

T, OUTPUT NO. 1

'3 ACTUAL REQUIRED AS FOUND AS LEFT

,: u ;)

-C"%

AS FOUND AS LEFT

-37)

IN IN OUT

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,3)

VDC VDC

/

VDC MA

/ %

',,..-m..

' r Trip 25 2.000

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/_0 Reset 26 2.040

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8

/ 25

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,"gy 12 / 50

)

.!SJ 16 / 75 Dial Setting

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20 / 100 i

pe I,o.If

\\*::eu3

.::D

&* UC u&

Test Equip.

Test Equip.

Remarks:

Safety Related:

Remarks:

Not Safety Related:

A3

2L-517 E Rev. 0 AUG luiM5 COMPUTER INPUT TEST Loop 2LD/517 Steam Generator LooD 2A Levei Process Rack #

3.1 Computer Address LO400 Remarks:

Exit computer IM Surveillance INPUT ENG. UNI 15 REQUIRED AS FOUND AS LEFT 1.000 VOC Percent 0

/

2.000 VOC Percent 25 f

3.000 VDC Percent 50

/

4.000 VDC Percent 75

/

5.000 VOC Percent 100

/

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eMi$.m :;.i-M.. ;#

.A ' l 1.g1 g M.. ' : *,,.,,-

6 a :s Perform noise ch VDC applied at 2TJ-517 and measured at 2TP-517-1.

MV P/P FINAL A-4 13001 l

Rev. 8 JUN 101986 9.

Test Of LooD A low Low Steam Generator Level With Level Above The Low

/%

Alarm And loop StoD VaIves Open 4

CAUTION Verify that the bypass breaker is in the operate position and closed for the train being tested as per the initial procedure.

Verify selector switch S-6 is in the block trip position as per the initial procedure.

Also, do not continue with this test section unless step 9A. is satisfied.

NOTE This test section will start motor driven auxiliary feedwater pump B when testing train A and auxiliary feedwater pump C when testing train B.

Train A

B 9A.

Verify:

Following annunciators are de-energized:

1.

Steam Gen. Loop A Level Hi Hi Low Lo Lo 2.

Reactor Coolant Loop A Stop Valves Closed Following test panel test light is energized:

3.

Reactor Trip Breaker white test light Foilowing test paneI light is de-energized.

,f.--

4.

Shunt trip test light L-14.

h Verify:

Aux FW Pp B(C) vented and sampled ~

I

- 9B.

At test panel turn selector switch S-3 to position 5

/

9C.

At. test' panel turn PB-1 to the alternate position 4

verify:

(

Following annunciator energizes:

1.

Steam Gen. Loop A Level Hi Hi Low Lo Lo Following Status light energizes:

2.

SG A Lo Lo Lvl LC5198 following test panel test light energizes:

3.

L-l 90.

At test panel turn PB-2 to a'l' ternate Verify:

Following annunciator energizes:

1.

STM. Gen. Loop A Level Low Low Reactor Trio Following Status light energizes:

2.

SG A Lo lo Lvl LC518B Following sequence of events entry on message / trend typer:

3.

LD 0406 Steam Generator A Lolo level Rx Trip

• Following test panel test lights:

4.

L-2 energizes 5.

Reactor Trip Breaker white test light de-energizes 6.

Shunt trip test light L-14 energizes.

(p}

Verify:

Aux. FW Pump B(C) starts Or if the process computer is inoperable, verify in the aux. elect. rm that the plunger is out on Train A (B) relay AFPl/XA (XB), location D-7, Rx Protection System Cabinet CB30 (31), Channel I.

0042P 34 0024A

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FOR lhFORMAil0N _

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ONLY Traia A

A B

i)

9E.

At test panel return PB-2 to normal Verify:

The five indications of step 9D. change back Following sequence of events entry on message / trend typer:

LD 0406 Stm. Gen. A lo Lo Level cleared **

9F.

At test panel turn PB-3 to alternate Verify:

Following annunciator energizes:

1.

Stm. Gen. Loop A Level Low Low Reactor Trip Following Status light energizes:

2.

SG A Lo Lo Lvl LC517B Following sequence of events entry on message / trend typer:

3.

LD 0406 Stm. Gen. A Lo Lo Levei Rx Trip

• Following test panel test lights:

4.

L-3 energizes 5.

Reactor Trip Breaker white test light de-energizes 6.

Shunt trip test light L-14 energizes.

9G.

At test panel return PB-l to normal Verify:

Following annunciator de-energizes:

1.

Stm. Gen. Loop A Level Low Low Reactor Trip Fdilowing Status light de-energizes:

O,...

2.

SG A Lo Lo Lvl LC5198

. (d)

Following sequence of events entry on message / trend typer:

3.

LD 0406 Stm. Gen. A Lo Lo Level Cleared **

Following test panel test lights:

e 4.

L-l de-energizes 5.

Reactor Trip Breaker white test light energizes 6.

Shunt trip test light L-14 de-energizes.

9H.

At test panel turn PB-2 to alternate Verify:

~

Following annunciator energizes:

1.

Stm. Gen. Loop A LeveI Low Low Reactor Trip Following Status light energizes:

2.

SG A Lo Lo Lvl LC518B Following sequence of events entry on message / trend typer:

3.

LD 0406 Stm. Gen. A Lo Lo Level Rx Trip

• Following test panel test lights:

l 4.

L-2 energizes

~

l 5.

Reactor Trip Breaker white test light de-energizes 6.

Shunt trip test light L-14 energizes.

Or, if the process computer is inoperable, verity in the aux. elect.

rm, that the plunger is out on Train A(B) relay AFPl/XA(XB), location D-7, Rx. Protection System Cabinet CB30 (31), Channel I.

l, Or, verify that the plunger is in on Train A(B) relay AFPl/XA(XB).

0042P 35 0024A

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.Rev. 6 JUNf{$f

~

A B

91.

At test panel depress PB-5 and PB-7 Verify:

Following annunciator de-energizes I.

Stm. Gen. Loop A Level Low Low Reactor Trip Following annunciator energizes:

2.

Loop A Isolation Reactor Trip and Safety Injection Blocked Following sequence of events entry on message / trend typer:

3.

LD 0406 Stm. Gen. A Lo Lo Level Cleared **

Following test panel test light energizes:

4..

Reactor Trip Breaker white test light Following test pcnel test light de-energizes:

5.

Shunt trip test light L-14.

9.1.

At test panel release PB-5 and PB-7 Verify: The four indications of step 9I. change back Foilowing sequence of events entry on message / trend typer:

LD 0406 Stm. Gen. A Lo to level Rx Trip

• 9K.

At test panel return PB-2 and PB-3 to normal Verify:

Following annunciators de-energize:

1.

Steam Gen. Loop A Level Hi Hi Low Lo Lo 2.

Stm. Gen. Loop A Level Low Low Reactor Trip

a. :. Following Status lights de-energize:

3.

SG A lo Lo Lvl LC517B 4.

SG A Lo Lo Lyl LCSIBB Following sequence of event entry on message / trend typer:

.e 5.

LD 0406 Stm. Gen. A Lo to level Cleared **

6.

L-2 and L-3 de-energize

/Q Following test panel test lights:

~

7.

Reactor Trip Breaker white test light energizes 8.

Shunt trip test light L-14 de-energizes.

4 i

9L.

At test panel return selectoi switch S-3 to normal A

yw Train A:

Date Signed b

Train 8:

Date Signed Unit i

NOTE If this is the final test section for this train, return trip breakers to the nonnal position as per concluding procedure section 15, page 52 and return the Aux FW pump B(C) to the stand-by position.

)

Or, if the process computer is inoperable, verify in the aux. elect.' rm.

i g

that the plunger is out on Train A(B) relay AFPl/XA(XB), location D-7, Rx.

. ( ',gff Protection System Cabinet CB30 (31), Channel I.

Or, verify that the plunger is in on Train A(B) relay AFPl/XA(XB).

i d

0042P 36

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0024A

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