ML20236N781

From kanterella
Jump to navigation Jump to search
Rev 0 to Procedure Tp 81-09, Scram Air Header Depressurization
ML20236N781
Person / Time
Site: Pilgrim
Issue date: 03/05/1981
From:
BOSTON EDISON CO.
To:
Shared Package
ML20236N770 List:
References
FOIA-87-644 TP-81-09, TP-81-9, NUDOCS 8711170007
Download: ML20236N781 (6)
v • d • e


Text

,

j \ ' \, ,

, { ,

l ~/' s a

3 g

i. t t

.s O  ;

f g-i,

,' ' ,/ '

3OS"ON TIf 14 '+18011 COV 3ANY l i

,I NU V QPERATIONS DEPARTMENT \

\ '

l PILC"dDi NUCJIAR PO'4R STATION <

! f Procedure No. TP 81-09 ,

l 1 SCR.Of AIR HEADER DEPRESSURIZATION_

l .\

List of Effective Pates J

81-09-1 Rev. O 81-09-2 Rev. 0 '

81-06-3 Rev. 6 '

S1-06-4 Rev. 0 t

81-09-5 Rev. 0 ,

$ b 09-6 At'/ O '

Attach =ents 81-09A-1 Rev. O l

l k

j Approved j / >

Deputy Nucl$ar Operations Department Date 3'S'Al 81-09-1 Rev. 0 8711170007 871.112 .-

PDR FOIA SORGIB7-644 FDR

'- - x __ bh/

~

~ ,

i I. DURPOSE The present Temporary Test Procedure (TP) is directed to obtain the following data and information about the PNPS #1 SPVAH:

A. Blowdown (depressurization) rate of the SPVAH by means of the two presently available venting systems: ATWS/ARI & RPS Backup Scram valves.

B. Actuation time for generic CRD units scram inlet and outlet valves, and for the vent and drain valves, after blowdown order is present.

C. Ef fect of the blowdown port site on blowdown race, by actuation of individual ATWS/ARI & Scram backup valves.

D. Comparison between AWS/ARI and Scram Backup valves venting rates, and verification of the operability 'of the entire SPVAH with the new modifications (PDCR -#81-06A and ERS's #79-25-43 & 44) introduced to the SPVAH.

E. Proper operation of SPVAH Pressure Switch PS-302-81 & associated C905 alarm.

F. Verification that no degradation of the Scram Backup valves function is caused by the presence of downstream AWS/ARI SV's.

G. Verification of the effect of the Fisher vent valve 168H on the venting of the SDV isolation pneumatic line.

II. APPLICABILITY )

This temporary TP is applicable to the SPVAH of the PNPS #1 nuclear operating station, after the completion of the scheduled modifications to be implemented by PDCR #81-06A and FRN's #79-2.5-43 and 79-25-44.

III. REFERENCES

'r A . ?DCR #79-25, ATWS/ARI - RPT System vB. PDCR #81-06A C. FRN's #79-25-43, #79-25-44 l ,

D. GEK 32478, CRD Syste=

IV. PREREQUISITES A. Reactor in cold shutdown condition F

B. Reactor Recire. pumps MG-Sets A&B tripped C. Applicable RPS & other plant procedures D. PDCR #81-06A completed E. FRN's #79-59-43 & 44 completed F. QC notified of the context of this temporary test pr:cedure G. Notify the W M h Engineer of the contents f this TP and obtain his authorization to proceed.

Verified by_ / ,

2 Date 5 ~f- 6 /

~ ,

'. i 81-09 Rev. 0 l > )

t:

0 L-

., :1 1

6. .j I

1/. ' PRECAUTIONS-i These tests must-be coordinated weih personnel performing tests or maintenance on CRD Units, CRD drives, RPS or other applicable' systems. .. Serious personnel-injury and equipment damage may result.from an unanticipated scram rignal.

VI. REQUIRED EQUIPMENT A. Gauge pressure transmitter, calibrated to 0-110 psig, with appropriate fittings. J B. One; recorder, calibrated for one analog (pressure transmitter) input and-five on-off (contact) signals.

C. One 24 Vdc power. supply (for; transmitter) ,

l I

D. .Two video-tap recorders and. video cameras, for recording video information' .+

in c'ontrol room panel C905.  ?}7 VII. TEST DESCRIPTIONS h

The. test procedure will be divided in three basic parts:  !

A. Blowdown of the SPVAH'by means of actuation of the ATWS/ARI solenoid' valves, SUB02-26A and 263, energizing'each one separately and recording the'results. J  ;

Also, a blowdown test should be performed with both SV!s ' energized simul- i caneously. y )

B. Blowdown of the SPVAH by. energizing independently each backup scram solenoid valves SV-302-19A and 19B, and recording the~results.

1 I C. Full reactor scram by energizing the RPS scram logic.

The test procedure calls for obtaining the following data:

A. SPVAH pressure vs time recording, by installing'a Pressure. Transmitter at the ,

header, downstream of the ATWS/ARI.SV's with associated recorder. .] .

B. CRD's scran inlet and outlet valves position information (open-closed), at the l Control Room Panel C905, by installing a video camera andLassociated video recording equipment.

C. With means to provide real time information' to synchronize. che video -i information with the blowdown event.

D. SDV Isolation (vent & drain) valve position information (open-closed), by. '

video' recording of the indicating lights in Control Room' Panel C905.

VIII. TEST PROCEDURE LOCATION Basically the locations involved in the TP are: ,

4

- CRD Quadrant, Mezzanine (Rx Building,1El (-) 12'-9") I

) ,

v

- Ex Building, El. 235-0", by ATWS/ARI valves and CRD Units

- Control Room, Panel C905 and RPS Logic ' .

81-09-3 Rev. 0 ,

a i A. Connect t,he PT to the Scram Pilot Valve Air Header (SPVAH) at spare h" block valve (V6, Sici #79-25-13, PDCR #81-06A, 1-\" copper manifold). Open the-block valve 6 verify the appropriate plant tagging procedu'res (this valve should be repositioned at its original position after tests are completed). Wire the necessary power supply and the as-aciated recorder Verified by U N Date 3/ T b /

B. With the SPVAH pressurized to its normal operating pressure (Rods fully inserted, scram reset, SDV drained and fully drained). Verify the operation of the pressure measuring loop, energizing the PT - Recorder System.

C. At Cogt,rJ1 Room Panel C905, install the video cameras and video tape recorders, to h- the CRD Scram (inlet and outlet) valves indicating lights, and on the SDV Vent and drain valves indicating lights (CV-302-21A & B, CV-302-22).

Ru'n 'a test to adjust the equipment to obtain the best possible picture resolution And to verify the timer information. Be aware of possible control room personnel interference during the scramming event.

Verified b'y- /. -. ,. Dace 3/t-h /

l D. Proceed with Part A of the TP, ATWS/ARI blowdown of the SPVAH.

CAUTION: The following test involves generation of a " slow" reactor scram by " insertion" order to all the CRP units and SDV isolation valves

closure.
1. AtPanelC905 concurrent 1hpushbothATWS-pushbuttons$4A6.S4C,to l energize SV302-26A. It will be necessary to hold the pushbuttons until 1 the air header is blown down as indicated by the scram valve indicator lights on C905. The time at which the energiration of SV302-26A occurred

- should be recorded and synchronized to the video recorders timers.

2. At Rx Building, El 23'-0", verify that a pressure recording of the l blowdown event has been obtained at the recorder.
3. Proceed to mark the recorder output with the necessary information (which I l initiating event) for future interpretation of the result.

Verified by [e Date ~5 [P /

l

4. At the Control Room Annunciator in C905, verify that the window for the l SPVAH Low Pressure Alarm was triggered during the blowdown event.

Verified by _

~

Date 3M/ $ /

5. Verify that after the ATWS/ARI Automatic reset, the SPVAH reset to its normal l Verified by - M Date .

SIA/

i l

6. Repeat steps d.1 thru d.4 for the other ATWS/ARI SV (302-263), by actuating I pushbuttons S4B and S4D at C905.

Verified by _ ,

. M, Date 3

@/

, i l

i l

4 81-09-4 hw @

_ . _ - _ a

1

,;4 7 . Repeat steps d.1 thru d.4, actuating both ATWS/ARI SVs at the.same time..

Verified by Date

e. ' Proceed with Part B of the TF, blowdown of the SPVAH us'ing the' backup scram valves. ,
1. At Control Room Panels C915 and C917, identify.rhe Terminal Blocks points CC-64, 66, 67, and fuses SA-F21A (C915) and Sa-tzl3 (at C917). These points feed /25 VDc to both Div. A & Div. B backup scram valve .

' Verified by u .. at /v/o<

/

r ,

2. Proceed to produce a SPVAH blowdown with one of the backup scram valves, SV302-19A,.by jumping at C915 the following terminal block points (energizing SV-302-19A)

--ce 64 to SA-F21 (output side of fuse) ke TT &/DL rrM

--ce 66 to CC 67 CAUTION: this action will assure blowdown of the SPVAH and consequently,-

force CRD's scram (inlet '& outlet) v'alves to open, 'as well as SDV Isolation. (Synchronize the time of energization of SV-302-19A with the video recording of C905 indicating lights).

Verified by r -

k gi Date 3M-/# /

i <

3. As indicated in steps d.2 and d.3 identify the SPVAH pressure recording

,for future use, and verify the actuation of Alarm for SPVAH Low Pressure, Verified by.

c h /

Date2 ' '

h/

\

4. Remove the jumpers across SV302-19A to 'de-energize the b'ackup valve, and - .I verify that the SPVAH returns to its normal e dition.

Verified by_ h a Date9[ /, /

/ t 6

5. Repeat steps e.2 thru e.'4 for the other backup scram valve, SV302-19B, making the following jumpers at C917:
  1. - cc 64 to SA-F21B (output side of fuse)

L/- cc 66 to cc 67 Verffled by .., /# .

- - Date 9 6 /r /

g

6. Proceed to part C of the F , by producing RPS Reactor Scram.- In this. case, the RPS logic will activate both backup scram valves, together with the SDV scram valves (SV-302-20A & B) and the CRD scram solenoids (50-117's and S0- i 118's).

Verified by c. a _ Date //;/9/ j

7. Reset the RPS Scram at C905, and return the system to normal, by removing the test equipment and returning block valve at t 1 " ma ifold (VS) to normal.

Verified by . Date . , /, [

- ,, M. .

8, WWIPV 6bl?T $uf't'AulSak 7%1~ Tc+TI9 CottiNTC' .

81-09-5 Im 0:

- - - --------__l.- . _ _ _ , _ _ _ _ _

. ,s

/X /(< eersn < c <xireec ,

-h $ PV S]l iver DcfAt$v/r!tt 'AY All /),Q /AC W S?:Reff

%llN 0lf),AM0 bO /Mll577'c',v; ,

0) n// Goo &enr wa9 M7vA+Cf) rs pottMe-)/<

c) v earpad how v2luc9 pivernep /'ieci @e/y o ,

'TCST 8A709/7/9 wifb4vT*piscg#fahCtQ 7Cc4plo eit ._ 5 $d/(*

IfCcifY/WC4 Cfd/7?Ril- (YCf vv709 G&Gth CfA. Y __ DA11' .,

t, ar eemv pare tour i,>n as ino in' v~ecewv gg,

\ ( ,_ A 1 B u e 9/1* /A#v'T e

-)

mr.ke+virs saemble /H N%<9 , J ppi

. 1 i

l l

I O

o l .,

f)l*=D h?Y/ .

- - _ - _ _ _ . - _ _ . _ _ _ _ _ . _ - - - . _ _ _ _ _ _ _ - . - _ _ _ _ _ _ - _ - . .

Retrieved from "https://kanterella.com/w/index.php?title=ML20236N781&oldid=3175636"