ML20238E831
| ML20238E831 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 09/01/1987 |
| From: | BOSTON EDISON CO. |
| To: | |
| References | |
| PROC-870901, NUDOCS 8709150236 | |
| Download: ML20238E831 (150) | |
Text
{{#Wiki_filter:' BOSTON EDISON O NUCLEAR OPERATIONS DEPARTMENT PILGRIM NUCLEAR POWER STATION Procedure No. 5.7.4.1.1 i POST ACCIDENT. SAMPLING SYSTEM Small Volume Liquid Sample l From Jet Pump Flow Sensing Line i List of Effective Paces 5.7.4.1.1-1 5.7.4.1.1-2 5.7.4.1.1-3 5.7.4.1.1-4 5.7.4.1.1-5 5.7.4.1.1-6 5.7.4.1.1-7 5.7.4.1.1-8 O 5.7.4.1.1-9 5.7.4.1.1-10 5.7.4.1.1-11 5.7.4.1.1-12 5.7.4.1.1-13 Attachments 5.7.4.1.1A-1 5.7.4.1.1A-2 5.7.4.1.1B-1 Approved Nu ear Operations Manager Date V )
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Safety Evaluation: -fregtt4+ed/Not Required O / gpgggggga 5.7.4.1.1-1 Rev. 5 y;O' N
lI I'. PURPOSE The purpose of this procedure is to provide instructions for the collection m and transport of small volume liquid samples from the jet pump flow sensing L - rd ' lines. II; DISCUSSION This procedure includes information on methods and precautions pertaining to
.the operation of the post accident sample panel in regard to the collection-and transport of a small volume liquid-sample from the jet pump.
'III. APPARATUS A. Small Volume Cask i
B. Sample Vial C. Syringe and Spare Needles (25 and 18 Gauge) D. Syringe Valves FO-16 and F0-17 E. Key, for PASS Main Power Switch (CR-E or CR-F) F. Keys for Chem Lab Access Door (CR-182 or CRA-20) G. Key for Ventilation Control Dampers (# Hi-Hi Rad. Key) IV. REFERENCE MATERIAL i A. PNPS P&ID H-239, Post Accident Sampling and H2 /02 Analyzer System B. PNPS Procedure No. 5.7.4.1 C. PNPS Procedure No. 2.2.132 (PASS Isolation. Valve Operations) D. General Electric Post-Accident Sample Station Operating Manual, NEDC-24889 E. Alpha Electric Refrigeration Company Instruction Manual, Alpha Model PCAQ-20-460 High Temperature Liquid Chiller V. PRERE0VISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and remaining exposures of the personnel involved in obtaining or analyzing samples, discuss stay times, discuss a plan of action in the event of a spill or break, discuss the method of communications, review all the procedures that are used, and discuss the equipment needed to perform the procedures. 5.7.4.1.1-2 Rev. 5 = = = _ _ _ _ _ __
- m. 1 o.
I 4 L' 8.1 .' Hatch Engineersnotified prior 'to initiating this procedure. Obtain permission ~to.open sample station air control outlet damper'(Secondary
, % Containment Penetration)~to establish ventilation flow path from the l ; ;y sample station to the Reactor Building, v;
e, - M As per memo _NED'84-990 the post-accident
.. . sampling system can be tested semi-annually and during training periods' without the system ventilation damper being.open.
V h C. - Request the' Control Room to open the following valves as per Operating. ![' Procedure Number 2.2.132: 1.! PASS Liqui' Return Line to Torus
,- a . SV-50m -71 and 72 for Jet Pump Flow Sensing Line #15
- b. SV-5065-77 and 78 for Jet Pump Flow Sensing Line fS p
M Each of the PASS Isolation Valves Control l .q , Circuits has.a-logic. system which will V " Trip" the valves closed upon receipt of a primary containment isolation signal.
'The operator must override this logic, via a key, in order to operate the above valves.
I D. Request Operations to provide system pressure reading for the make-up demineralized water system. E. Fill'out Attachment A to ensure there is sufficient instrumentation to perform this procedure (For Surveillance Tests Only). Fill out L Attachment B as indicated in procedure. F. Direct access door to Rad. Chem. Lab. should be unlocked and ready to open. G. PASS operator shall be accompanied by C&RP Toch. to monitor radiological conditions. VI.- PRECAUTIONS A. The-indicator for the area radiation detector RI-507 is on the PASS control panel C-228. Its reading should be continually monitored upon initial entry to the sample station and during sampling process.
'M O 5.7.4.1.1-3 Rev. 5 JI:_ __ :- . - :_ -
B. Be alert for increased temperatures by monitoring TI-660 on panel 228 whenever high temperature samples are being circulated through the PASS. If during the sampling of high activity liquid, leakage or a malfunction occurs, and/or if the sample temperature exceeds 150*F,
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- s immediately place HC-626 to the "UF AND OFF" position and request the Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive.
C. The operator should position himself at the front of Panel C-228 whenever possible maintaining a maximum distance from the sample collection station at all times. D. The drain and blow-out sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so may result in damage to an air pump. Sample station alarms and lights will indicate when draining is required The sample staticn operation in progress will be stopped immediately by turning the sump drain system switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will return to the operation previously interrupted, unless other switches were changed in the meantime. E. The PASS Area Radiation Monitor is set to alarm at the following set points: Alert: 450mR/hr. High: 900mR/hr. F. If the PASS Area Radiation Monitor High Alarm alarms, immediately g) notify the RETC for further instructions, VII. LIMITATIONS A. Radiological The sample station enclosure shielding is based on Reg. Guide 1.3 i source terms predicted I hour post-LOCA. The earliest a sample may be ; collected is one (1) hour after an LOCA. l
'1 B. Containment or Torus Atmosphere Samples i
The design pressure of the atmosphere sample circulating pump is 40 psig. The containment or torus cannot be sampled above 40 psig. C. Reactor Coolant Sample (via RHR Pumps) A RHR Coolant Sample cannot be collected above 450 psig Reactor Vessel pressure due to the design limitations of the RHR system. l i D. Cooling Hater Cooling water must be available to E-604 and E-605 prior to purging and collecting a liquid sample above 150*F. l V 5.7.4.1.1-4 Rev. 5 i e j
E. Panel Operaticn To extend the' life of the components in the atmosphere sampling section-
#N of the panel, the exposure to high temperature samples, i.e., normal-V sample temperatures under< accident conditions, should be limited to the extent practical during surveillance and training' operations.
F.. -PASS DHST Ensure Make-Up Demineralized Hater System pressure is <140~ psi prior to utilizing this pressure to operate the. PASS demineralized water storage tank. VII
I. PROCEDURE
A. Chiller ~00eration
- 1. Piping Station Chiller
- a. Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open.
(2) Verify the control panel for the PASS chiller is energized by ensuring that the Heater "0N" indicating lamp is ILLUMINATED on the control panel. (3) Position Chiller Pump Control Switch to "0N, Process
;] Pump "0N," and Power "0N" on the Chiller Control Panel.
- b. Abnormal (1). If the compressor fails, samples may be cooled using water from the fire main.
(2) Attach a 1-1/2 inch hose to the machine shop south wall fire main header. (3) Attach the other end of the fire hose to the hose connection located just outside the cooling unit on the coolant discharge line. (4) Close the chiller unit supply isolation valve. (5) Close the chiller return isolation valve. (6) Open the fire main water supply valve. (7) Remove the pipe cap and open the chiller drain valve to allow fire main water to drain to the floor. I l (8) Open supply valve at machine shop south wall fire main I. header and check for flow at chiller drain. O [ U 5.7.4.1.1-5 Rev. 5 c_ m _ _ _:. r_ _-
coe..ca.....c..ee.....e............................................................. CAUTION-
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'"' 'If the chiller unit supply and. return isolation valves 'are not closed before water from the fire. main-is' turned on,' damage to the chiller unit could
.0 occur. t
**enanmaa****aenamenee*****enaa*************AA*****eme****ena****emenenemaaaamenema-3
- 2. Sample Cabinet Chiller
- a. Check level of Chiller as displayed.on level indicator. Fill as necessary by opening- the Chiller make-up water inlet valves.
B. Drainina the Trao. Sumo and Collector The following is in preparation for the. drain and blow-out sequence which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas' sampling lines, is too high.
- 1. Ensure that all control panel switches are in the Up and Off position. Then insert the control panel key into the control panel main power switch and select either A or B.
- 2. Observe the area radiation monitor (RI-507) on the control panel C-228 and record its readings.
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- 3. The following step should be performed only during an actual emergency and not during training or surveillance testing:
- a. Open the sample station air control inlet damper, located on the upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad. key) and open sample station air control outlet damper. Observe a positive air flow on Meter PI-72b.
This flow ensures adequate ventilation of the sample cabinet. l 5.7.4.1.1-6 Rev. 5 C_ _ _ _ _-- -
L , 4. . Fill the. demineralized water. tank (V-501):
- a. When Make-Up Demin. Mater System is.in service.
{ .(1) Ensure FO-14 Isolate Nitrogen to Tank Valve is CLOSED.
'(2) Open water overflow valve 1013 and release the air 4
pressure. (3) Slowly open-valve 1011 to the demineralized water supply. ,.. (4) Observe overflow from. discharge tube; close F0-13. (5)' Open the nitrogen supply tank. (6) Open PCV-505 downstream of the nitrogen regulator. (7) ~ Adjust regulator to 100 psi. CAUTION Do not exceed 140 psi on the Demin. Tank as indicated on V-501.
- b. When Make-Up Demin. Water System is not in service.
O ci)- onea >ter overrio vaive ro-is >ad reie>se the air pressure. (2) Observe sight glass for water level. HDIE If insufficient level exists, demineralized water must be poured into the tank from another source. (3) Close valve F0-13. (4) Open the nitrogen supply tank. (5) Open PCV-505, downstream of the nitrogen regulator. (6) Back-off the regulator to the nitrogen supply and open the nitrogen supply valve (F0-14) on the top of the tank; adjust regulator to 100 psig. O-5.7.4.1.1-7 Rev. 5 _ _ _ _ _ _ _ _ . . _ _ . _ . . . . _ _ _ -. ~
s 11 . - M h ., N l' oi Demin. Tank. level must be monitored since supply valve will be closed.
- 5. ' Open mineralized water flush -line from storage tank, FO-12.
i l 6. Check the water tank (V-501) pressure gi7Jge and ensure pressure is ,
- l. ' approximately 100 psig. '
- 7. Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627.
p M For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus muit be open; otherwise, the 100 psi nitrogen used for discharging thn collector tank (V-715) will force liquid into the liquid sample loop. This can'be. verified by: i
- a. Turning HC-626 to Position 5 (RHR on by-pns),
d- b. Turn Flush System Switch HC-628-1 counterclockwise to V Position 6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts demineralized water flowing through CV-626 and FCV-627.
- d. Observe that approximately 1 gpm flow is indicated on FI-664 (thus providing a positive indication that the discharge line to the torus is open).
- 9. After being assured that the. discharge line to the torus is open, drain the Collector Tank V-715. Trap T-717 and the sump by turning switch HC-715-1 clockwise thru its eight positions. Pause approximately 5 seconds at each position. As soon as the switch is turned to Position 2, the liquid selection status light and Flush System Mode light adjacent to HC-628-1 will turn off and valves CV-628 and CV-626 will close.
- 10. After the drain and blow-out cycle is completed and switch HC-715-1 is again in the 0FF position, the flush with demineralized water will automatically resume. Stop the flush
. operation by turning HC-700 to the "0FF" position. I O. 5.7.4.1.1-8 Rev. 5
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.11. Turn'HC-626 to the UP and'0FF position..
'12. Turn Flush. System' Switch HC-628-1 clockwise to the UP and 0FF g_ ; position.
M - C.- Obtain'a Small Volume Liauid Samole From Jet Pumo Flow Sensina Line
- 1. - Request the Control Room.to open PASS Liquid Sample-line from. Jet Pump A.
- a. SV-5065-63 and,64 for Jet Pump Flow Sensing Line #15.
i 7 b. - SV-5065-85 and 86:for Jet Pump. Flow Sensing.Line #5. EIE Each of the PASS Isolation. Valves Control circuits.has a. logic system which will " Trip" the valves closed upon receipt of a primary. 1 containment isolation signal. The' operator must override this logic,- via a key, . in
. order to. operate the above valves. _.
-2. Slide the lead shielding drawer out'so that the needles.under the sample. station enclosure are exposed.
q '3. Using'a mirror and flashlight, check that the needles are straight. V ele If the needles have been slightly dul5ed, penetration of the septum will be easier.
- 4. If not already in place, place the small yolume cask positioner on the hooks below the sample station and insert the small volume cask.
5.7.4.1.1-9 Rev. 5 B g4 N
F , . 5 5. Unscrew and remove-the stopper / carrying handle from the small
"~
volume cask. 4 # D
,,s l~ 6. Place a'15 m1 sample ~ bottle with aluminum outer retainer ring and
( L neoprene cap into the small volume cask. i E0lf [ The samp1e bottle must fit snugly in the holder and be aligned vertically. If necessary,' place a small pad of rubber, felt, or other soft gasket material suffi-ciently thick to hold the bottle against F the upper yoke of the holder. Make sure the lifting level is free. 1
- 7. Swing the cask into position under the sample station C-229 and lock the arms of the cask holder. The cask and bottle will now remain in position.
CAUTION Before admitting radioactive liquid into the sample station, proper positioning of the bottle should be verified as follows: (] ............***...**.....****.....** ...*****..****.********.**** ......************
- a. Turn HC-626 to Position 2, " Jet Pump Line".
HQlf I No indicator lights will be activated at this time.
- b. Turn HC-616-1 Small Volume Sample Switch to Position 3 " FLUSH j LOOP." j i
- c. Turn HC-700-1 Liquid / Gas Selector Switch to " LIQUID" mode.
j l l 1 1 b 5.7.4.1.1-10 Rev. 5 l 4-
- u 1 l d.- 'For easier needle penetration, apply a light-coating of 9 silicone grease to the rubber or aluminum top of-the vial.
Raise-the sample bottle into position on the needle by moving the lever on the side of the cask upward. The bottle (c[..
- position status light " LIQ'D BOT'L In" near HC-616-1 on the control panel, will indicate the bottle is in position with-L the needle penetrated thru the neoprene cover. Screw the lift. rod in -to hold the sample bottle in.the correct .
position. If the bottle'doesn't clear the entry hole, lower the bottle.and rotate the small volume cask about 1/8" in-
, either direction.
- e. Turn HC-616 to UP and 0FF position.
- 7. Flush system with liquid to be sampled as follows:
- a. Turn sample selector HC-626 to Position 1. " Jet Pump on Bypass".
- b. Observe FI-664; adjust PCV-627. flow control (N2 Supply to FCV-627) to achieve approximately 1 gpm reading,
- c. Continue bypass flow.for a period long enough to ensure complete purge of lines-(the minimum time required is 15 minutes).
- d. Record flow (FI-664).and purge time on the DATA SHEET.
- e. After purge is complete, turn liquid cadple source selector switch HC-626 to Positicr .2, " Jet Pump Line". This step O. cioses bypass vaive cv-826.
- f. . Flow per FI-664 will be greatly reduced; adjust FCV-627 Flow Control (N2 supply to FCV-627) for a minimum .3 gpm reading.
- g. Record the following on the DATA SHEET: l o Pressure per PI-661 o Temperature per TI-660 o Conductivity per CI-663 o' Radiation'per RI-665-
- 8. Turn the small volume liquid sample selector switch HC-616-1 to the "TAKE SAMPLE" position (1). The supply side valve or CV-625 will close immediately to relieve the pressure on valve CV-616, and, after the time delay set on CR-18, valve CV-616 will rotate and carry the sample into alignment with the line to the sample bottle.
- 9. Record sample time.
- 10. Observe FI-664. Verify that flow is zero. '
O 5.7.4.1.1-11 Rev. 5
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" Ill. : Connect. the syringe onto'the line provided-for it on the front'of n ' theLsample station. 'Open the twol manual valves- FO-16 and:FO-17' S- and press on.the syringe and inject all of'the 10 cc of water into 3 the'line. t,mi ~
.c.
.12. Close the valves opened FO-16 and FO-17. (These-valves are at the g end.of the syringe).
.13. Remove the 10 cc syringe.
r .' 14.~ Fill: a 100 cc: syringe with. air. JAttach to the injection line. Open valves'FO-16 and FO-17 and inject air. ( 15.- Close valves.FO-16 and FO-17, and remove the syringe. 16.; Turn switch HC-616-1 to' FLUSH position (3).. Flush for 2 minutes or'until RI-665 reaches 'a minimum.
- 17. When..the flush is completed', p;rfo'rm the .following:
I a. Turn HC-700-1 to UP and 0FF position.
- b. -Turn HC-616-l'to UP and 0FF position (2).
- c. Turn HC-626-1 to UP and 0FF position (3).
- 18. Unscrew the lift rod and lower the. sample bottle from the needles.
- 19. Unlock.the arms of the cask holder and swing the' cask out.
h 20. Perform and record dose rate.
- 21. Replace the st'opper and. carrying handle of the small volume cask.
- 22. Perform and record dose rate.
- 23. Replace..the'1ead shielding drawer fully back into position to protect:.the needle.
D. Transoort Samole
- 1. Open lab access door.
- 2. Remove the small volume cask from the positioner, carry to the lab access doorway.
- 3. Pass the small volume cask through the doorway, do not go into the 1 lab.
- 4. Secure' access door.
LO- : 5.7.4.1.1-12 Rev. 5
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E .' Return-System To Normal
- 1. Perform a drain of the Trap,' Sump, and Collector per.
g3 - Section VIII.B.9.of this procedure. ";~ U . Ensure that all switches on PASS Control Panel, C-228, are in the -
~
- 2.'
UP-and 0FF position. p 3. Turn off the main' power switch and remove the key.
- 4. - 'Close'the demineralized water tank by closing valves FO-ll and F0-12.
5.' Close the nitrogen supply val've on the top of the nitrogen _ tank.
- 6. . Turn off Piping Station Chiller by turning Power _ switch to 0FF.
- 7. Close and lock _the sample station ventilation air control inlet and outlet dampers.
- 8. Notify the' Control' Room to close the valves on the applicable.RHR Loop and the valves on the sample return line'to the torus (opened in Step V.C).
- 9. ' Notify the Hatch Engineer that the procedure has been completed.
- 10. Egress the sample station by way of the Machine Shop. . ,
- 11. Return to the OSC to review data collected during sampling.
..A V IX. 611AIFRllS A. Instrument Checklist (Surveillance Checklist)
B. Data Sheet SIGNED DATE h 5.7.4.1.1-13 Rev. 5
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h' -, f: ATTACHMENT B-Data Sheet-h- . Record The Data Pertinent To This Procedure M [ L
, 1. ' Area Radiation Monitor RI-507 mR/hr.
]
.2.: Sample-Return F1ow FI-664 GPM
-3. Liquid Sample Press.- PI-661 PSIG.
l .- 4. Liquid Sample Temp. TI-660 *F I ,
- 5. Conductivity Indicator CI-663 /CM
- 6. Liquid Radiation Monitor. RI-665 .R/hr.
7.. . Sample Time
- 8. . Dose Rate on Vial Unshielded mR/hr.
- 9. Dose Rate on Vial: Shielded mR/hr.
10.- Inst ument'and Serial # Remarks: SIGNED DATE l. L ih _ ! 5.7.4.1.18-1 Rev. 5 j
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NUCLEAR' OPERATIONS DEPARTMENT.-
._ PILGRIM NUCLEAR POWER STATION Procedure No. 5.7.4.1.2-y .
POST ACCIDENT-SAMPLING SYSTEM UNDILUTED-LIQUID SAMPLE AND DISSOLVED GAS GRAB SAMPLE FROM' JET PUMP' FLOW SENSING' LINES
. List of Effective Pages
'5.7.4'1.2-1
. 5.7.4.1.2-15' 5.7.4.1.2-2 '5.7.4.1.2 h 5.7.4.1'.2-3 >
lV. 5.7.4.1.2 5.7.4.1.2-5 5.7.4.1'.2-6 5.7.4.1.2-7 5.7.4.1.2-8 5.7.4.1.2-9 5.7.4.1.2-10 5.7 4.1L.2-11
-5.7.4.1.2-12 5.7.4.1.2-13 5.7.4.1.2-14
-Attachments-l j
. 5.7.4.'l .2A-1 5.7.4.1.28-1 l 5.7.4.1.28-2 j
, J Approved #/ M, w I Nu (ar'Oper'itrons Manager l V
Date Vf*$0kl
/ /
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.(] Safety Evaluation: ftegtrived,/Not Required 5.7.4.1.2-1 Rev. 6 i
G - .. . _ . . . . . . j
t I. PURPOSE cu The purpose.of this procedure _is to' provide instructions for the collection T(% .f' and transport of'an undiluted liquid sample and dissolved gas grab sample
'from the jet pump flow sensing lines
'II. DISCUSSION.
'This' procedure includes information'on methods and precautions pertaining to the operation of the' post-accident sample panel in regard to.the collection-and' transport of an undiluted liquid' sample and dissolved gas sample from
- the jet pump flow sensing lines.
III. APPARATUS-t A.- . Undiluted Liquid Sample Cask. B. Sample Vial C.- Syringe and Spare Needles (25 and 18 Gauge) D. Syringe Shield-E. Key, for PASS Main Power Switch (CR-E or CR-F) 6 F. Keys for Chem Lab Access Door.(CR-182 or CRA-20) Ga Key for Ventilation Control Dampers (# Hi-Hi Rad. Key)
;O H. teed u ned syringe cerrier
'IV. REFERENCE MATERIAL A. PNPS P&ID H-239, Post Accident Sampling and H2 /02 Analyzer System j B. PNPS Procedure No. 5.7.4.1 1 C. PNPS Procedure No. 2.2.132 (PASS Isolation Valve Operations) i D. General Electric Post-Accident Sample Station Operating Manual, {
NEDC-24889 ! E. Alpha Electric Refrigeration Company Instruction Manual, Alpha Model PCAQ-20-460 High Temperature Liquid Chiller V. PREREQUISITES , A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and ? I remaining exposures of the personnel involved in obtaining or analyzing samples, discuss stay times, discuss a plan of action in the event of a spill or break, discuss the method of communications, review all the { procedures that are used, and discuss the equipment needed to perform i the procedures. k] _ { 5.7.4.1.2-2 Rev. 6 l
)
- t a B. Watch Engineer; notified prior to. initiating this procedure. 0btain.
L permission to open. sample station air control ~ outlet damper (Secondary W Containment Penetration) to establish ventilation' flow. path from the i)j satple.. station to the Reactor Building. NOTE
'As per memo NED 84-990 the post-accident sampling system can be tested.
semi-annually and during training periods' without'the-system ventilation damper being open. C. Request the Control Room to open the following valves as per Operating Procedure Number 2.2.132:
- 1. PASS Liquid Return Line to Torus
- a. SV-5065-71 and 72 for Jet Pump Flow' Sensing Line #15 b'. .SV-5065-77 and 78 for-Jet Pump Flow Sensing Line #5 i
NOTE [ Each of the PASS Isolation Valves Control Circuits has a logic system which Hill
" Trip" the valves closed upon receipt of a primary containment isolation signal. The
-operator must override this logic, via a key, in order to operate the above valves.
D. Request Operations to provide system pressure reading for the Make-Up ! Demineralized Water System. E. Fill out Attachment A to' ensure there is sufficient instrumentation to perform this procedure (For Surveillance Tests Only). Fill out Attacament A as indicated in procedure. F. Direct access door to Rad. Chem. Lab should be unlocked and ready to open. I- G. PASS operator shall be accompanied by C&RP Tech, to monitor radiological conditions.
'h i 5.7.4.1.2-3 Rev. 6 o _
pc j h' V
. VI '. PRECAUTIONS L q LA. Thezindicator for the' area radiation detector RI-507 is on the PASS F d control panel C-228. Its reading should be continually monitored upon
. initial entry to the sample station and during sampling process.
t B. Be alert for increased temperatures by monitoring TI-660 on panel 228 whenever high temperature samples are being' circulated through.the o PASS. If during the sampling of high activity liquid, leakage or a malfunction occurs, and/or if the sample temperature exceeds 150*F,
- immediately place HC-626 to the "UP AND.0FF" position and request the Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive.
C. The operator should position himself at the front of_ Panel C-228-whenever possible maintaining a maximum' distance from the sample collection station at all times. I D. The drain and blow-out. sequence will take precedence over any other operation and therefore may be performed _at any time. Failure to do'so-may result.in damage to an air pump. Sample station' alarm light will indicate when-draining is required The sample station operation in progress will be stopped immediately by turning the sump' drain system-switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will return to the operation previously interrupted, unless other switches were changed in'the meantime. The PASS Area Radiation Monitor is set to alarr at the following set
.Q-v E.
points: Alert: 450 mR/hr. High: 900 mR/hr.
. F. If the PASS Area Radiation Monitor High Alarm alarms, immediately notify the RETC for further instructions.
VII. LIMITATIONS A. Radiological The sample station enclosure shielding is based on Reg. Guide'l.3 source terms predicted I hour post-LOCA. The earliest a sample may be collected is one (1) hour after an LOCA. B. Containment or Torus Atmosphere Samples The design pressure of the atmosphere sampl~e circulating pump is 40 psig. The containment or torus cannot be sampled above 40 psig.
- = C. Reactor Coolant Sample (via RHR Pumps)
A RHR Coolant Sample cannot be collected above 450 psig Reactor Vessel L pressure due to the design limitations of the RHR system. l O 5.7.4.1.2-4 Rev. 6
E , n I' . , p-
'O. Cooling Water h
Cooling water must be available'to E-604 and E-605 prior:to purging'and qlj. . collecting a liquid sample above 150*F. ?' E. . Panel Operation To~ extend the life of the components in the atmosphere sampling section of the panel, the exposure to high temperature samples, i.e., normali [. sample' temperatures under accident conditions, should be limited to the extent practical during surveillance and training operations. F. PASS DHST Ensure Make-Up Demineralized Water System pressure is <140 psi prior to utilizing this, pressure to operate the PASS Demineralized Hater Storage Tank. VII
I. PROCEDURE
A. ~ Chiller' Operation-
- 1. Piping Station Chiller
, a. Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open.
A (2) Verify the control panel for the PASS chiller is U. j energized by ensuring that the Heater "0N" indicating lamp is ILLUMINATED on the control panel. (3) Position Chiiier Pump Control Switch to "ON, Process Pump "0N," and Power "0N" on the Chiller Control Panel,
- b. Abnormal (1) If the compressor fails, samples may be cooled using j water from the fire main. 4 i
(2) Attach a 1-1/2 inch hose to the machine shop south wall i fire main header. ] (3) Attach the other end of the fire hose to the hose connection located just outside the cooling unit on the coolant discharge line. (4) Close the chiller unit supply isolation valve. f (5) Close the chiller return isolation valve. 1 i (6) Open the fire main water supply valve. O i 1 j 5.7.4.1.2-5 Rev. 6 I i i _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ J
4 c 1 O { (7) Remove the pipe cap and'open the chiller drain valve'to-allow fire main water to drain to'the floor. (8) 'Open supply valve at machine shop south wall fire main-
~ '
header and check for flow at chiller drain. CAUTION l If the' chiller unit supply and return isolation valves are not closed before water from the fire main is turned on, damage'to the chiller unit could occur.
- 2. Sample Cabinet Chiller
- a. Check level of Chiller as displayed on level indicator. Fill ,
as necessary by opening the Chiller make-up water inlet i valves. B. Draining the Trap, Sump and Collector The following is in preparation for the drain and blow-out sequence which must be performed _ routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling lines,.is too high. i nV 1. Ensure that all control panel switches are in the Up and Off position. Then insert the control panel key into the control panel main power switch and select either A or B. I
- 2. Observe the area radiation monitor (RI-507) on the control panel C-228 and record its readings.
- 3. The following step should be performed only during an actual emergency and not during training or surveillance testing (Ref.
VA):
- a. Open the sample station air control inlet damper, located on ,
the upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad. key) and open sample station air control outlet damper. Observe a positive air flow on Meter PI-728. This flow ensures adequate ventilation of the sample cabinet.
- 4. Fill the demineralized water tank (V-501):
- a. When Make-Up Demin. Water System is in service:
l (1) Ensure FO-14 Isolate Nitrogen to Tank Valve is CLOSED. (2) Open water overflow valve F013 and release the air pressure. 1 5.7.4.1.2-6 Rev. 6
m_ (3) Slowly open valve F011 to the demineralized water supply. (4) . Observe overflow from discharge tube; close F0-13.
- )
L7 qq V (5) Open.the Nitrogen Supply Tank ~ (6) Open PCV-505, downstream of.the Nitrogen regulator (7). Adjust regulator to 100 psi. cCAUTION
'Do.not exceed 140 psi on the Demin. Tank as indicated on V-501.
.b. When Make-Up Demin. Water System is not in service:
(1) Open water-overflow valve FO-13 and. release-the air pressure. (2) Observe sight glass for water level. NOTE D.
\- I If insufficient level exists, demineralized water must be poured into the tank from another source.
(3) Close valve F0-13. (4) Open the nitrogen supply tank. (5) Open PCV-505, downstream of the nitrogen regulator. (6) Back-off the regulator to the nitrogen supply and open the nitrogen supply valve (FO-14) on the top of the tank; adjust regulator to 100 psig. NOTE L Demin. Tank level must be monitored since supply valve will be closed. k I 5.7.4.1.2-7 Rev. 6
l;
.4" Open demineralized water flush line from storage tank,;F0-12.
[ l 5'.
/ 6. . Check the water tank (V-501). pressure gauge and ensure pressure'is p
}:
- d' ; approximately 100 psig.
l .
- 7. - Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627.
H < NOTE For FCV-627 to be open, a miniinum ofl3 psi-on the gauge adjacent to PCV-627 is required. o, .
- 8. The discharge line.to the torus must be open; otherwise,-the 100 psi' nitrogen used for discharging the collec. tor tank (V-715) will force 4'
liquid into the liquid sample loop. This can be verified by:
- a. Turning HC-626 to Position 5.(RHR'on by-pass). %;w
- b. Turn Flush System Switch HC-628-1 counterclockwise to .n Position 6.
- c. Turn Liquid / Gas Selector Switch'(HC-700) to Liquid. This starts demineralized water-flowing through CV-626 and ,FCV-627.
h7 d. Observe that approximately 1.gpm flow is. indicated on FI-6641 (thus providing a positive indication that the discharge line
'to the torus is open).
9; After being assured that the discharge line to the torus ishopen,- drain the' Collector. Tank V-715. Trap T-717 and the sinp by turning switch HC-715-1 clockwise thru its eight positions 6 Pause approximately 5 seconds _at each~ position. As soon as the. switch is turned to Position 2, the,11guld selection stat 6s light will turn off and valves CV-628 and CV-626 will close. n
- 10. After the drain and blow-out cycle is completed and switch HC-715-1 is again in the OFF position, the flush with demineralized water will automatically resume. Stop ths flush operation by turning HC-700 to the "0FF" position.
s-
- 11. Turn HC-626 to the UP and 0FF position. ,
< 12. Turn Flush System Switch HC-628-1 clockwise to the UP'and 0FF position.
C. Obtain Undiluted Liauid Sample and/or Dissolved Gas Grab Sample
- 1. Slide the lead shielding drawer out so that the needles under-the sample station enclosure are exposed.
5.7.4.1.2-8 Rev. 6
.m_sm._ . m j
^
Q %:J; , h g kN m" ' , . .
. m . .
- 2. . Using a:miror.and flashlight',. check.that the needles are straight' '
k andwillbecenterhdoverthesamplebottle. H A. D . , , d', [ ,
-NOTE I J .If the needles have been slightly dulled, R as recommended, they will penetrate.the aluminum retainers of the sample bottle pt t J - without.being damaged.
ljfSt M 3. . Remove the' lead' stopper from'the undiluted sample cask and place a 15 ml' sample bottle with an aluminum outer retainer ring and
- p. neoprine cap into the. opening. .Also, a slight coating of silicone grease on the end outer shrface.of the~ cap will make needle
@h.jy penetration easier. 1 . ;]
- N .g J y
- p,
,' NOTE
.g The sample bottle.must fit snugly in its holder and be aligned vertically. If
% necessary, place a small pad of rubber,
, felt or other soft' gasket material sufficiently thick to hold.the bottle
.. p) .
v against the upper yoke of the holder.
..Q . Make sure the lifting lever is free.
. h.( ,
.M 4. With the cask in the fully lowered position, roll it into position under the sample station. 4
**********************ee'ee'***************************e******************************
s r s i CAUTION
- Befor9 idraitting radioactive liquid into thiessmple station, proper positioning of theJottle'shouldbeverified. I neesee,seeWe******eee***eneeeeeee*****e********eeeeee********************************
- s . a b#:i $. Request the Control Room to open PASS Liquid Sample line from Jet H, i Pump.A.
af !SV-5065-63 and 64 for Jet Pump Flow Sensing Line #15. Y .' ) f
.t
- o a
~ : <
1 y S.7.4.1.2-9 Rev. 6 w WQLL:-_ _- . : r_: _ _ 1
I
/ 1
-b. SV-5065-85 and 86 for' Jet. Pump Flow Sensing Line #5.
[ . t NOTE O L Each of the PASS Isolation Valves Control 4 .c ~ Circuits ~has a logic system which will:
" TRIP" the. valves closed upon receipt of a P
primary containment isolation signal. 'The operator must override this logic, via a key, in order to operate the above valves. L
- 6. Check sample bottle position as~follows:
- a. Set HC-616-1 to " FLUSH LOOP" (Position 3).
- b. Set HC-700 to " LIQUID."-
- c. Set HC-626.to " Jet Pump Line" (Position 2)
- d. Depress the plunger which causes the sample bottle to raise out of the cask and onto the two needles. When the' bottle.is in the correct position the " LIQ'D BOT'l IN" light co the control panel will change from red to green.
O NOTE The tolerances are tight; each sample bottle is not exactly the same and the needles are somewhat fragile. If necessary, replace needle (s) when misalignment is suspected. Do not rotate the sample bottle when it is on or near the needles.
- e. Raise undiluted sample cask with hydraulic hand pump. The cask is positioned properly when its top fits into the bottom opening of the sample station.
- f. Stop pumping when the top cask ring is inside the sample station opening and contact has been made between cask and sample station. If necessary, lower and reposition the cask.
- g. Turn HC-616-1 to the "UP AND OFF" position.
- 7. Purge system with fluid from desired source.
.t}
I 5.7.4.1.2-10 Rev. 6 j =m_=-_ __ _ _ _ -- _ -- - - - - - - - - _ _ - - - - - - - - - - - - - - .
y ;p F 4 xw/3 'r . # ,, y 'qs, , W
+
f Turn Sample $ elector,)lC-526 to Jet Pump BYPASG Pdsi cic,n
- a. '
r f s; , ll0, , a NOTE- ,
'When HC-626 6 in JET PUMP BYPASS Position g ~
=#
3 (1) or RHR' BYPASS Position (5), bypass valve
# ;CV.-626;will'be_open."
} ., y ., e .
'; 'T a
('4 b. Mjust PCV-627 Flow Control (N 2. supply to FCV-627) for-1 gpm :
, gtscharge flow as indicated by F1-664.
J i t '. e .
- c. ; Maintain flow for 15 minutes. [ '
r
- 8. Continue 'f,ss,h / I w ..
- a. IfteM15' minutes,turntheLiquidSampWIdurch. Selector,- f Switch FC-626 to "ht Pump Line" Position (2).
- b. Adjust CVf627FlowControlsothattiedischargeflowrate; !
from?CVlu27isapproximately0.3gpm,asthis~willminimize
.6 theffessure drop.
a g
,+< / .>
- c. # Leavesin thes' e positions for at least 20 mi'nutes.
8 In thei Do not pr ieed to Step 10 until 5(v7; f.1intmim,proceedtoStep9.this$0piinutesflushingtime'isccm s n afo ,r , p
;. f '-
- r. ,
- 9. Verify, leak *cightness of Dissolved'Cas W }cction Chambei . ;
+
e J' , N a. Turn the Dissolved Gas and Liqui'd Sample $witen iid :60,1 to- y): +
" START P-7017 and " INSERT NEEDLE" position'l. ,
Do not insert *c
'M needle into'the gas collection' chamber. Observe tDat the P-701 sta m jand valve'C The light on the mimicbaar6willbeon.f-622
!c rotates. i f .
d . l
' , b. When PI-662 is' stable, ttrn Switch HC-601 to "0FF" or I, ' "RELIEVE PRESSURE /TAKE GASiSAr4PLE" position (9).
.e i
- c. Confirm PI-662 does not rise more than 0.05 psia / min., this may I Mica.te high air leak rate into the gas collection chard,ery s s <
y
~
l NOTE 1: 'If PI-662 increises by more than 0.05 o';1a/ min., thir, may indicate high air leak rate into the gas l
,' coflection chamber. Tighten the saptum first and ;l repeat above steps.
t
;(~)
, 1 5.7.4.1.2-11 Rev. 6 f
- j. /"
m
~ '- -
3
- l% QH
.Q I'V
- g ,;. ,
m .
.. NOTE 2: If. tightening the septum still yields high pressure ls*, 1 increases,. replace the septum and repeat above-l L C). : ..;
steps... If replacing the septum still-yields.high pressure increases this indicates a. leak in valve FQM n or fitting.. Problems-with-degassing the liquid
' 4'
- t. "
3
% sample may be encountered unless' repairs are made:
W.' , r , at this time. a ,
. y.
1 / d. Confirm P'I-662 indicates 5.7 psia or lower. %f a. , w m c
' NOTE Nj If Dissolved Gas Collection Chamber cannot
..be evacuated to below 5.7 psia, this usually indicates the vacuum pump P-701 requires rebuild or replacement. .Do not proceed with next' step unless a vacuum is drawn on dissolved
- gas collection chamber.
.. m p% e. Insert an open-ended. needle through the septum via:the needle t- - guide.into the gas collection chamber. This' allows air to. purge into'the collection chamber-and the pressure should
- return to atmospheric' pressure.
N , 1.0L Continue Flush
" ? '
- a. : Turn the Dissolved Gas and Liquid Sample-Switch HC-601-to
" START P-601" Position.(?).
- b. Observe liquid circulation pump P-601 is on by checking for.
the light on the mimic board for P-601 at-the bottom and side of the control panel..
- c. Leave in these positions for approximately 20 minutes.
L d, PeygrdthefollowingontheDATASHEET: l Flow per FI-664 1
' Pressure per PI-661 Conductivity per CI-663 Radiation per RI-665 11 Irclate Sample
- a- Turn switch HC-601 to." CIRC AND SEPARATE GAS" Position (3).
C ' Leave in this' position for approximately 30 seconds.
- b. Turn HC-601 to " REMOVE NEEOLE" Position (4). Remove the needle inserted in Step VII.9.e. Wait untti PI-662 reading j
'i s stabilized and is less than 5.7 psia, j i
L[ Rev. 6 N 5.7.4.1.2-12 g ' l tg e i a' 1
- c. Turn switch HC-601 to " CIRC AND SEPARATE GAS" Position (5);
leave in this position for 3 to 6 seconds. () d. When PI-662 reading is stab'le, record value as P1 on the DATA-SHEET (Attachment A).
- e. Turn switch HC-601 to " COLLECT DISSOLVED GAS" Position (6).
Wait for about 5 seconds. Record pressure of PI-662 on Data Sheet,
- f. Turn switch HC-601 to " CIRCULATE AGAIN" Position (7). Walt for about 10 seconds.
l g. Turn switch HC-601 to " COLLECT DISSOLVED GAS AGAIN" Position l (8). Watt for about 5 seconds. Record pressure of PI-662 on Data Sheet.
- h. Repeat above Steps (f) and (g) at least four times and until the difference between consecutive pressure readings from P-662 is less than 0.15 psia.
- 1. Turn switch HC-601 to " RELIEVE PRESSURE /TAKE GAS SAMPLE" Position (9). Record final pressure of PI-662 as P2 on Data Sheet.
- 12. Take Dissolved Gas Sample CAUTION Place radiation monitor to measure activity of syringe.
- a. Insert long needle on a gas tight syringe through the septum via needle guide into the gas collection chamber.
CAUTION Hand contact with the syringe containing gas sample should not exceed 30 seconds due to high dose rate.
- b. Draw a 2cc gas sample and lock the syringe. DO NOT WITHDRAW NEEDLE.
l O 5.7.4.1.2-13 Rev. 6
i l; i CAUTION If a radiation measurement taken by the H.P. is > at 11 Rem /hr at the syringe, unlock the syringe, and inject the sample back into the gas collection chamber. Turn switch HC-652 to the left to relieve pressure and then remove the needle. Discard the needle and syringe. High dose rate in the syringe indicates water accumulation in the syringe. Repeat operating procedure. I
- c. Record sample time and the dose rate from the syringe,
- d. If PI-662 indicates greater than 15 psia, turn switch HC-652 counter-clockwise to the " RELIEVE PRESSURE" position and hold i in this position to relieve pressure in the gas collection chamber, as indicated by PI-662.
- e. Remove needle and syringe and place in lead lined syringe carrier for transport to Lab.
- 13. Take undiluted liquid sample.
- a. Turn HC-601 to Position 10.
- b. Press pushbutton HC-629-1 and hold for at least 10 seconds.
Liquid from the selected source will be drawn into sample bott'e-O
- c. Turn HC-601 to 0FF.
- d. Record sample time.
- e. Lower the liquid sample bottle into the large cask by pulling l up on the plunger handle.
CAUTION Do not turn the plunger handle while lowering the sample bottle. Any twisting of the bottle with needles inserted will result in bent needles. I
- f. Lower the cask on the cart by relieving the hydraulic oil pressure with the small petcock handle on the hydraulic ;
cylinder. i
- g. Slide the lead shield drawer back into the enclosure to cover the opening for the needles.
,q h. Roll the cask out from under the sample station quickly and U have H.P. personnel take a radiation reading at the top of the cask. Record this reading.
5.7.4.1.2-14 Rev. 6
m; e...............................................................................*...~ CAUTION g 1 V There wil.1 be.a column of radiation above the opening on the top of the cask. Do notLlean over the cask before replacing the lead plug. i
- 1. Put-the lead plug into the top of the' cask, and take another reading. Record this reading.
- 14. Request the ' Control Room to close PASS Liquid Sample line from Jet 1_ ,
Pump #15 or_#5.
- a. SV-5065-63 and 64 for Jet Pump. Flow Sensing Line #15.
- b. SV-5065-85 and 86 for Jet Pump Flow Sensing Line #5.
D. TRANSPORT SAMPLE
- 1. Open lab access door.
- 2. Carefully and slowly roll the cask away from the sample station and over to the lao access doorway.
- 3. Roll the cask through the doorway into the counting room - do NOT go into the counting room from the PASS.
O 4. Secure access door on the e^SS side of the waii. E. Flush Operation for Undiluted Liouid/ Dissolved Gas
- 1. Always perform this section after taking undiluted liquid sample and/pr a dissolved gas sample.
'2. Verify all system switches and valves are "UP" and "0FF" except i Switch HC-626 will be set at " Jet Pump Line" (2) and HC-700 will l be set at " Liquid". Leave this switch at the present position. !
- 3. Turn the flush system Switch HC-628-1 to Position (2) " Start Flush" which will close the inlet lines and start the flush from the demineralized flush water tank (V-501). Observe FI-664 for a positive indication of flow.
- 4. After RI-665 shows radiation levels have decreased significantly turn Switch HC-628-1 to Position 3, " Flush V-610 Loop". Observe Radiation Monitor RI-665.
- 5. When the radiation levels reach a minimum turn switch HC-628-1 to Position 4, " Flush P-601 Loop." Observe Radiation Monitor RI-665.
! 6. When Radiation levels reach a minimum turn Switch HC-628-1 to i Position 5, " Flush P-601 Loop." Observe radiation levels on
-(] Radiation Monitor RI-665.
l 1 5.7.4.1.2-15 Rev. 6
- 7. 'When the radiation levels reach a minimum turn Switch HC-628-1 to Position 6, " Flush Piping Station." The: bypass will be open for this flush and the main flow will-not pass RI-665 Radiation f('v
, ~d. Monitor. 8.. Turn Switch HC-628-1 to Position 7 " Flush CV-622 Loop." Observe Radiation Monitor RI-665. l 9 .' Turn Switch HC-626 to Position "0FF". l 10. Turn Switch HC-628-1 to Position "0FF".
-11. If the Radiation Monitor RI-665 did not indicate an acceptable radiation level at any step of this operation, rereat Steps D.1 thru D.ll.
F.- Return System To Normal'
.l.- Perform a drain of the Trap, Sump, and Collector per-Section VIII.B.9 of this procedure.
2.. Ensure that all switches on PASS Control Panel, C-228, are in the-UP and 0FF position.
- 3. Turn off the main' power switch and remove the key.
-Close'the demineralized water tank by closing valves FO-ll and. l 4.
FO-12. O A' Close the. nitrogen supply' valve on the top of the nitrogen tank. 5.
- 6. Turn off piping station chiller by turning POWER switch to 0FF.
- 7. Close and lock the sample station ventilation air control inlet and outlet dampers.
B. Notify the Control Room to close the valves on the sample return line to the torus (opened in Step V.B).
- 9. Notify the Watch Engineer that the procedure has been completed.
- 10. Egress the sample station by way of the Machine Shop.
- 11. Return to the 0.S.C. to review data collected during sampling.
IX. ATTACHMENTS A. Data Sheet B. Instrument Checklist A' ) j V- j l 5.7.4.1.2-16 Rev. 6
-.'I l' r,
o ATTACHMENT ~A fT Data Sheet T- Record The. Data Pertinant.To This^ Procedure
- 1. Area Radiation Monitor RI-507 mR/hr.
- 2. Sample. Return Flow FI-664 GPM
- 3. Liquid Sample Press. PI-661 PSIG
- 4. Conductivity Indicator- CI-663 US/CM S. Liquid Radiation Monitor-' RI-665 R/hr~.
- 6. Dissolved Gas Press. PI-662 P 1= PSIA P'.
P-P= 2 PSIA
- 7. . Sample Time'for Dissolved Gas Sample
- 8. Dose Rate on the Syringe- R/hr.
- 9. Sample Time for Liquid Sample
- 10. Dose Rate on Vial Unshielded mR/hr..
.11.' Dose Rate on Vial Shielded mR/hr.
, 12. Instrument and Serial #
Remarks:-
~
SIGNED DATE 5.7.4.1.2A-1 Rev. 6
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"..fO,j NUCLEAR 0PERATIONS DEPARTMENT PILGRIM NUCLEAR POWER STATION.
Procedure No. 5.7.4.1.3 POST ACCIDENT SAMPLING SYSTEM SMALL VOLUME LIQUID SAMPLE 'FROM RESIDUAL HEAT REMOVAL SYSTEM List of Effe'ctive Pages
. 5.7.4.1.3-1 5.7.4.1.3-2
- 5.7.4.1.3-3 I
- 5. 7.4.1. 3- 4 5.7.4.1.3 5.7.4.1.3-6
. 5.7.4.1.3-7 q 5.7.4.1.3-8 i j .5.7.4.1.3-9 5.7.4.1.3-10 5.7.4.1.3 . 5.7.4.1.3-12 ,
Attachments 5.7.4.1.3A-1 5.7.4.1.3A-2
- 5. 7 . 4 .1. 3 B-1..
Approved
# /
N ear Operations _ Manager Date V 2- P) 77v Safety Evaluation: 'e' g'd/Not Required I h ) I L~ O 5.7.4.1.3-1 Rev. 7 3 l
.p..g. 6 4
f f
;I,. PURPOSE.
The purpose of this procedure is to provide instructions for the collection f1'. (' and~ transport of.small volume 1iquid samples from the Residual Heat Removal
. System (RHR)- .
< ' II . ' DISCUSSION. This: procedure includes information on methods and precautions pertaining
'to the operation of the post-accident-sample panel in regard to the collection and transport of a small volume liquid sample from RHR.
III. -APPARATUS A; Small Volume Cask-B. . Sample Vial C. > Syringe'and Spare Needles (25 and 18 Gauge) D. Syringe Valves.FO-16 and FO-17 E. Key, for PASS Main Power Switch (CR-E or CR-F) F. Keys for Chem Lab Access Door (CR-182 or CRA-20)
.G. Key for Ventilation Control Dampers (# Hi-Hi Rad. Key)
/7 IV. REFERENCE MATERIAL V PNPS P&ID M-239, Post Accident Sampling and H2 /02 Analyzer System A.
B. PNPS Procedure No. S.7.4.1 C. . PNPS Procedure No. 2.2.132 (PASS I' solation Valve Operations) D. ' General Electric Post-Accident Sample Station Operating Manual, NEDC-24889 E. Alpha Electric Refrigeration Company Instruction Manual Alpha Model PCAQ-20-460 High Temperature Liquid Chiller , V.. PRERE001 SITES t A. A pre-job briefing shall take place with all personnel involved.in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and remaining exposures of the personnel involved in obtaining or analyzing samples, discuss stay times, discuss a plan of action in the event of a spill or break, discuss the method of communications, review all the procedures that are used, and discuss the equipment needed to perform the procedures. h. S.7.4.1.3-2 Rev. 7 L.. ..
B. Watch Engineer notified prior to initiating this procedure. Obtain
. (~; . permission to open sample station' air control outlet damper (Secondary LJ Containment Penetration) to establish ventilation flow path from the f sample station to the Reactor Building. !
4 NOTE ! As per memo NED 84-990 the post-accident sampling system can be tested semi-annually and during training periods without the system ventilation damper being open. 4 C. Ensure the RHR system is lined up in the cooling mode for the requested sample _(Torus or Reactor Coolant). Verify which Loop (A or
- 8) will be placed in service.
D. Request the Control Room to open the following valves as per Operating Procedure Number 2.2.132:
- 1. PASS Liquid Return Line to Torus
- a. SV-5065-71 and 72 for Loop A, or
- b. SV-5065-77 and 78 for Loop B.
/^3 V 2. PASS Liquid Sample Line from applicable RHR Loop in service.
- a. SV-5065-65 and 66 for Loop A, or l
- b. SV-5065-83 and 84 for Loop B NOTE Each of the PASS Isolation Valves Control Circuits has a logic system which will i
" Trip" the valves closed upon receipt of a primary containment isolation signal. The operator must override this logic, via a key, in order to operate the above valves.
E. Request Operations to provide system pressure reading for the make-up domineralizer water system.
)
i l n
.G i
1 5.7.4.1.3-3 Rev. 7 l 1 d
'F. Fill ~out Attachment A'to' ensure there is sufficient instrumentation to P perform this procedure (For, Surveillance Tests.0nly). Fill out P . Attachment B as indicated'in procedure.
E ; Q G. Direct access door to Rad. Chem. Lab. should be, unlocked and ready to-open. H. PASS' operator shall'.be accompanied by C&RP Tech. to monitor radiological ~ conditions. VI. PRECAUTIONS
.A. The indicator for th'e' area radiation detector RI-507 is on the PASS control panel C-228. .Its reading should be continually monitored upon initial entry to the sample station and during sampling process.
B. Be alert for increased temperatures by monitoring TI-660 on panel 228 whenever high. temperature. samples are being circulated'through the PASS. If.during the sampling of high activity liquid, leakage or a malfunction' occurs, and/or-if the sample temperature exceeds 150*F, immediately place HC-626 to the "UP AND OFF" position and request the Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive. C. The operator should position himself at'the front of Panel C-228 whenever possible maintaining a maximum distance from the' sample collection station at all times. D. The drain and blow-out sequence will take precedence over any other-operation and therefore may be performed at any time. Failure to do so may result.in damage to an air. pump. Sample station alarms and lights will' indicate when draining is required The sample station J operation in progress will be stopped immediately by turning the sump-drain system switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will' return to the operation previously interrupted, unless other switches were changed in the meantime. E. The PASS Area Radiation Monitor is set to alarm at the following set points: Alert: 450mR/hr. High: 900mR/hr. F. If the PASS Area Radiation Monitor High Alarm alarms, immediately notify the RETC for further instructions. VII. LIMITATIONS A. Radiological The sample station enclosure shielding is based on Reg. Guide 1.3 source terms predicted I hour post-LOCA. The earliest a sample may be collected is one (1) hour after an LOCA. 5.7.4.1.3-4 Rev. 7
l '%! 7. B. ' Containment orLTorus' Atmosphere Samples s n ~ The. design pressure of the atmosphere: sample circulating pump is 40 W psig. The containment or~ torus cannot be sampled above 40 psig. C. Reactor; Coolant Sample (via RHR Pumps) A RHR Coolant Sample cannot be collected above 450 psig Reactor Vessel
. pressure due to the design-limitations of the RHR system.
D. Cooling Water Cooling water must be available to E-604 and E-605 prior to purging and collecting a liquid sample above 150*F. m E. Panel operation
~
-To extend'the:11fe'of the components in the atmosphere sampling section_of the panel, the exposure to high temperature samples, i.e.,
normal sample temperatures under accident conditions, should be limited to the extent practical during surveillance and training operations. i F. PASS DHST Ensure Make-Up. Demineralized Water System pressure is <l40 psi prior to utilizing this pressure to operate the PASS demineralized water storage tank. O
\/ >VII
I. PROCEDURE
A. Chiller Operation
- 1. . Piping Station Chiller
- a. Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open.
(2) Verify the control panel for the PASS chiller is energized by ensuring that the Heater "0N" indicating i l lamp is ILLUMINATED on the' control panel, (3) Position Chiller Pump Control Switch to "0N, Process Pump "0N," and Power "0N" on the Chiller Control Panel. I
- b. Abnormal )
I (1) If the compressor fails, samples may be cooled using { l-water from the fire main. '] l (2) Attach a 1-1/2 inch hose to the machine shop south wall fire main header, p i: U j h j
- 5. 7 . 4 .1.' 3-5 Rev. 7 i
L .. 1_ . ___:___-____ ____1________________ _ _ _ O
O 1(3) ' Attach the other end of-the fire hose to the hose connection located just outside the ' cooling unit on the MN coolant-discharge line. U '
.(4) Close the chiller unit supply isolation . valves.
(5). Close the chiller return isolation valve. (6) Open the fire main water supply valve. (7) Remove the pipe cap and open.the chiller drain valve to allow fire main water.to drain to the floor.
- 8. Open supply valve at machine shop southwall fire main ~
header and check for flow at chiller drain. CAUTION If the chiller' unit supply and return isolation valves ar6 not closed
-before water from the fire main is turned on, damage.to the chiller unit could occur.
- 2. Sample' Cabinet Chiller
- a. Check level of Chiller as displayed on level indicator.
l(~ 4 Fill as necessary by opening the Chiller make-up water inlet valves. B.- Drainino the Trap. Sump'and Collector
- The_ following is in preparation for the drain and blow-out sequence
-which must be performed routinely before and after each sample is taken, and, whenever the level in' Trap T-717, which removes' water from gas sampling lines, is too high.
- 1. Ensure that all control panel switches are in the Up'and Off )i position.. Then insert the control panel key into the control l panel main power switch and select either A or B.
- 2. Observe the area radiation monitor (RI-507) on the control panel C-228 and record its readings.
The following step should be performed on~1y during an actual .I 3. emergency and not during training or surveillance testing:
- a. Open the sample station air control inlet damper, located on i the upper right side of the gas sample cabinet. Unlock j l
(using Hi-H1 rad key) and open sample station air control outlet damper. Observe a positive air flow on Meter PI-728. This flow ensures adequate ventilation of the sample cabinet. 5.7.4.1.3-6 Rev. 7 l
t ,
, 4. Fill the: demineralized water tank (V-501):
pD)- a. When Hake-Up Demin. Water System is in service. (1) Ensure FO-14. Isolate'N.itrogen to' Tank Valve is CLOSED. (2) Open water overflow valve'F013 and release the air
-pressure.
(3) Slowly open valve F0li to the demineralized water supply. (4) Observe overflow from' discharge tube; close FO 13. (5) Open the nitrogen supply tank.
-(6) Open PCV-505 downstream of the nitrogen regulator.
~(7) Adjust regulator to 100 psi.
-CAUTION Do not exceed 140 psi on the Dcmin. Tank as indicated on V-501.
- b. When Make-Up Demin. Water System is not in service.
h' (1) Opa- water overflow valve F0-13 and release the air pressure. (2) Observe sightglass for water level. NOTE If insufficient level exists demineralized water n1ust be poured into the tank from another source. (3) Close valve F0-13. (4) Open the nitrogen supply tank. (5) Open PCV-505, downstream of the nitrogen regulator. (6) Back-off the regulator to the nitrogen supply and open the nitrogen supply valve (F0-14) on the top of the tank; adjust regulator to 100 psig. I I 5.7.4.1.3-7 Rev. 7 i
i NOTE m Demin. Tank level.must be monitored since 9,j 9, NL
' supply valve will be closed l,
- 5. . Open demineralized water flush line from storage tank, FO-12.
-6. Check the water tank (V-501) pressure gauge and ensure pressure is approximately 100 psig.
- 7. Adjust PCV-627~to obtain 15 psi on gauge adjacent to PCV-627.
NOTE For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus must be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will force liquid into the liquid sample loop. This can be verified by:
- a. Turning HC-626 to Position 5 (RHR on by-pass).
q- b. Turn Flush System Switch HC-628-1 counterclockwise to 1./ Position'6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts demineralized water flowing through CV-626 and FCV-627. ,
l
- d. Observe that approximately 1 gpm flow is indicated on FI-664 (thus providing a positive indication that the discharge line to the torus is open).
4
- 9. After being assured that the discharge line to the torus is open, l drain the Collector Tank V-715., Trap T-717 and the sump by turning switch HC-715-1 clockwise.thru its eight positions.
Pause approximately 5 seconds at each position. As soon as the switch is turned to Position 2, the liquid selection status light ! and Flush System Mode light adjacent to HC-628-1 will turn off and. valves CV-628 and CV-626 will close.
- 10. After the drain and blow-out cycle is completed and switch !
HC-715-1 is again in the OFF position, the flush with ; demineralized water will automatically resume. Stop the flush l operation by turning HC-700 to the "0FF" position. i I !O t 5.7.4.1.3-8 Rev. 7 l l - ~ . _ _ _ _ .
GE
- 11. Turn HC-626 to the Upland 0FF position.
P fs 12. Turn Flush. System Switch HC-628-1 clockwise to the UP and 0FF Q position. C. Obtain a Small Volume Liquid Sample From Residual Heat Removal System
- 1. Slide the lead shielding drawer out so that the needles under the sample station enclosure are exposed.
'2. Using a mirror and flashlight, check..that the needles are straight.
NOTE If the needles have been slightly dulled, penetration of the septum will be easier.
- 3. If not already in place, place the small volume cask positioner on the hooks below the sample station and insert ~the small volume cask.
- 4. Unscrew and' remove the stopper / carrying handle from the small
-volume cask.
- 5. Place a 15 mi sample bottle with aluminum outer retainer ring and neoprene cap into the small volume cask.
NOTE L
-The sample bottle must fit snugly in the holder and be aligned. vertically. If necessary, place a small pad of rubber, felt, or other soft gasket material sufficiently thick to hold the bottle j against the upper yoke of the holder.
Make sure the lifting level is free.
- 6. Swing the cask into position under the sample station C-229 and lock the arms of the cask holder. The cask and bottle will now remain in position.
L i O 5.7.4.1.3-9 Rev. 7 y l
- . L CAUTION Before admitting radioactive liquid into the sample station, proper positioning of the bottle should be verified as.follows:
- a. Turn HC-626'to Position 4, RHR.
NOTE No indicator lights will be activated at
~
this time.
;. b. Turn HC-616-1 Small Volume Sample Switch to Position 3 i " FLUSH LOOP."
- c. Turn HC-700-1 O quid / Gas Selector Switch to " LIQUID" mode,
- d. For easier needle penetration, apply a light coating of
' silicone grease to the rubber or aluminum top of the vial.
Raise-the sample bottle into position on the needle by ' moving the lever on the side of the cask upward. -The bottle position _ status light "Lig'd Bot'l.In" near HC-616-1 on the:
~O -control panel, will indicate the bottle is in position with'
'V' the needle penetrated thru the neoprene cover. Screw the lift rod in to hold the sample bottle in the correct position. -If the bottle does not clear the entry hole, lower the bottle and rotate the small volume cask about 1/8" in either direction,
- e. Turn HC-616-1 to UP and 0FF position.
- 7. Flush system with liquid to be sampled as follows:
i
- a. Turn sample selector HC-626 to Position 5. "RHR On Bypass",
- b. Observe FI-664; adjust PCV-627 flow control (N2 Supply to FCV-627) to achieve approximately I gpm reading.
- c. Continue bypass flow for a period long enough to ensure complete purge of lines (the minimum time required is 15 minutes).
- d. Record flow (FI-664) and purge time on the DATA SHEET.
l e. After purge is complete, turn 11guld sample source selector I switch HC-626 to position 4, "RHR". This step closes bypass l '-
. valve CV-626.
O v 5.7.4.1.3-10 Rev. 7 L - _ ._ -----.-- ____________ _ _
, s
'f. Flow per FI-664 will be greatly reduced; adjust FCV-627 Flow Control (N2supply to FCV-627) for a minimum .3 gpm reading.
I- , , ( g. Record the following on the DATA SHEET: o_ Pressure per PI-661 o Temperature per TI-660 " l o Conductivity per CI-663 o' Radiation per RI-665
- 8. Turn the small volume' liquid sample selector switch HC-616-1 to
'the ."TAKE SAMPLE" position (1). The supply side valve or CV-625 will close immediately to relieve the pressure on valve CV-616, and, after the time delay set on CR-18, valve CV-616 will rotate and carry the' sample.into alignment with the line to the sample bottle.
- 9. Record sample time.
- 10. Observe FI-664. Verify that flow is zero.
- 11. Connect the. syringe onto the line provided for it on the front of the sample station. Open the two manual valves FO-16 and FO-17 and press on the' syringe and inject'all of the 10 cc of water into the'line.
- 12. Close the valves opened FO-16 and F0-17. (These valves are at' the.end of the' syringe).
' d, -
- 13. Remove the 10'cc syringe.
14.. Fill a 100 cc syringe with air. Attach to the injection line. Open valves F0-16 and FO-17 and inject air.
- 15. Close valves FO-16 and FO-17 and remove the syringe.
)
- 16. Turn switch HC-616-1 to FLUSH position (3). Flush for 2 minutes or untti RI-665 reaches a' minimum. -
- 17. When the flush is completed, perform the following:
- a. Turn HC-700-1 to UP and 0FF position.
1
- b. Turn HC-616-1 to UP and 0FF position (2). <
- c. Turn HC-626-1 to UP and 0FF position (3). ]
- 18. Unscrew the lift rod and lower the sample bottle from the needles.
.19. Unlock the arms of the cask holder and swing the cask out. 1 l-
- 20. Perform and record dose rate. l p 1 f 21. Replace the stopper and carrying handle of the small volume cask. l l
5.7.4.1.3-11 Rev. 7 ]
- 22. Perform and record dose rate.
q 23. Replace the lead shielding drawer fully back into position to n,/ protect the needle. D. Transport Sample
- 1. Open lab access door.
- 2. Remove the small volume cask from the positioner, carry to the lab access doorway.
- 3. Pass the small volume cask through the doorway, do not go into the lab.
- 4. Secure access door.
E. Return System To Normal
- 1. Perform a drain of the Trap, Sump, and Collector per Section VIII.B.9 of this procedure.
- 2. Ensure that all switches on PASS Control Panel, C-228, are in the UP and 0FF position.
- 3. Turn off the main power switch and remove the key.
- 4. Close the demineralized water tank by closing valves F0-il and
'T, FO-12. U
- 5. Close the nitrogen supply valve on the top of the nitrogen tank.
- 6. Turn off Piping Station Chiller by turning Power switch to 0FF. ;
- 7. Close and lock the sample station ventilation air control inlet and outlet dampers.
i
- 8. Notify the Control Room to close the valves on the applicable RHR Loop and the valves on the sample return line to the torus j (opened in Step V.C). j
- 9. Notify the Watch Engineer that the procedure has been completed.
- 10. Egress the sample station by way of the Machine Shop.
- 11. Return to the 0.S.C. to review data collected during sampling.
IX. ATTACHMENTS A. Instrument Checklist (Surveillance Checklist) B. Data Sheet (J 5.7.4.1.3-12 Rev. 7
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; Area: Radiation-Monitor: RI-507 - mR/hr.
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'4. Liquid-Sample. Temp. .
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- 6. : Liquid Radiat. ion Monitor
- 7. ; Sample ' Time'-
!~ 8.. : Dose: Rate on Vial Unshielded 'mR/hr. 14 m" . .
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? , 9 . -.. Dose Rate o'n' Vial Shielded 10 : Instrument and Serial #
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'l 5.7.4.1.3B-1 Rev. 7 j i
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BOSTON EDISON r> NUCLEAR OPERATIONS DEPARTMENT PILGRIM NUCLEAR POWER STATION Procedure No. 5.7.4.1.4 POST ACCIDENT SAMPLING SYSTEM. UNDILUTED LIQUID SAMPLE AND DISSOLVED GAS GRAB SAMPLE FROM RESIDUAL HEAT REMOVAL SYSTEM List of Effective Paces-
'5.7.4.1.4-1 5.7.4.1.4-2 5.7.4.1.4-3 5.7.4.1.4-4 5.7.4.1.4-5 5.7.4.1.4-6 i . 5.7.4.1.4-7
' f( . 5.7.4.1.4-8
!5.7;4.1.4-9
' 5.7.4.1.4-10 5.7.4.1.4-11 5.7.4.1.4 5.7.4.1.4-13 5.7.4.1.4-14 5.7.4.1.4-15 5.7.4.1.4-16
. 5.7.4.1.4-17
-&i13thments 5.7.4.1.4A-1 5.7.4.1.48-1 '
5.7.4.1.4B-2 - Approved , o /r fr ~ uclear Operations Manager Date f9 Safety: Dequired/Not Required O 5.7.4.1.4-1 Rev. 5 _m .-_1_.__ __
'I.. PURPOSE The purpose of this procedure is to provide instructions for the callhetion ,
DO and transport of an undiluted liquid sample and dissolved gas grah sample from the Residual Heat Removal System (RHR). l
.II.. DISCUSSION This procedure includes -information on methods and precautions pertaining to i the operation of the post-accident sample panel in regard to the collection ;{
and transport of a small volume liquid sample and dissolved gas sample from RHR. , III. APPARATUS- ") ' A. Undiluted Liquid Sample Cask B. Sample-Vial n' y ~ C. Syringe and Spare Needles (25 and 18 Gauge) ; D. Syringe Shield E. Key, for PASS Main Power Switch CR-E or CR-F i F. ' Keys for Chem Lab Access Door CR-182 or CRA-20 G. Key for Ventilation Control Dampers (# Hi-Hi Rad. Key) ; (] H. Lead lined syringe carr W . N IV. REFERENCE MATERIAL , A. PNPS P&ID M-239, Post Accident Sampling and H2 /02 Analyzer System 3 i B. PNPS Procedure No. 5.7.4.1
.i '
C. PNPS Procedure No. 2.2.132 (PASS Isolation Valve Operations) D. General Electric Post-Accident Sample Station Operating Manual, I NEDC-24889 E. Alpha Electric Refrigeration Company Instruction Manual, Alpha Model i PCAQ-20-460 High Temperature Liquid Chiller l l i V. PREREQUISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this brieft g1 is to perform all the prerequisites possible at this point, discuss acm rates and remaining exposures of the personnel involved in obtaining or analyzing l samples, discuss stay times, discuss a plan of action in rne event of a ! j spill or break, discuss the method of communications, review all the ' procedures that are used, and discuss the equipment needed to perform ' the procedures. 5.7.4.1.4-2 Rev. 5 .r i e . _ _ _ _ _ _ _ _ _ _ _ _ _ ._. .
& kf:. y ik ,.
,, qN- y g. K '
h- "B. : H'atch" Engineer notified prior' to' initiating this procedure. - Obtain permission to openssample station air control outlet damper (Secondary [L l .. Containment Penetratica) to establish ventilation flow path from the
.T .sampi0; station to'the Reactor Building.
L (J : ,
'(
,' 4 M
AspermemoNED84d90thepost-accident sampling' system can be tested . , . ~3 semi-annually and during trainipg perio'ds without the system ventilation damper being open. x
- k. g G
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(C. Ensure thetfHR system is' lined up in the cooling mode for.the requested sairple (Torus or. Reactor Coolant). Verify which Loop (A or B) will be
, placed in service.
~
D . .1 Request the_ Control Room ~to'open the following valves.as per Operating T '" Procedure Number 2.2.132: 1.' PASS Liquid Return Line to. Torus a._ ;SV-5065-71 and.72 for Loop A, or n, 1 b.3 SV-5065-77 and 78 for Loop B. (D.'h 2. FASS Liquid Sample Line from rpplicable RHR Loop in service. yh ' ^ a. SV-5065-65 and.66 for Loop A, or Qt 4 1. b .~ SV-5065-83 and 84 for Loop B .- sj, '
}
a E L] n Q' N Each of the PASS Isciation Valves Control i Circuits has a logic system which will j y' " Trip" the valves closed upon receipt of a ' w'" primary containment isolation signal. The 1 operator must override this logic, via a 1 key, in order'to operate the above valves. ] 1 ) E. Request Operations to provide, system pressure reading for the Make-Up l Demineralized Water System. '
> s
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m , M a.V g
+ 5.7.4.1.4-3 Rev. 5 I
b
---- -..----.___._.n- ~ _ . _ , - . . - - p .,-
F. - Fill cut Attachment B to ensure there is sufficient instrumentation to perform this procedure (For Surveillance Tests Only). Fill out Attachment A as indicated in procedure. 7 V) G. Direct access door to Rad. Chem. Lab should be unlocked and ready to open. H. PASS operator shall be accompanied by C&RP Tech. to monitor radiological conditions. VI.; PRECAUTIONS
-A. The indicator for the area radiation detector RI-507 is on the PASS control panel C-228. Its reading should be continually monitored upon -
initial entry to the sample station and during. sampling process. B. Be alert for increased temperatures by monitoring TI-660 on panel 228 whenever high temperature samples are being circulated through the PASS. If during the sampling of high activity liquid, leakage or a malfunction occurs, and/or if the sample temperature exceeds 150*F, immediately place HC-626 to the "UP AND OFF" position and request the Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive. C. The operator should position himself at the front of Panel C-228 whenever possible maintaining a maximum distance from the sample collection station at all times. D. The drain and blow-out sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so
'(]. may result in damage to an air pump.- Sample station alarms and lights will indicate when draining is required The sample station operation in progress will be stopped immediately by turning the sump drain system switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will return to the operation previously interrupted, unless other switches were changed in the meantime.
E. The PASS Area Radiation Monitor is set to alarm at the following set points: Alert: 450mR/hr. High: 900mR/hr. F. If the PASS Area Radiation Alarm Monitor High Alarm alarms, immediately notify the RETC for further instructions. VII. LIMITATIONS A. Radiological The sample station enclosure shielding is based on Reg. Guide 1.3 source terms predicted I hour post-LOCA. The earliest a sample may be I collected is one (1) hour after an LOCA. ( 5.7.4.1.4-4 Rev. 5 l L-- _ __ _
= -
7- xp y ; w, y s,;
, ... , d
;, i B. . C;ndyinnent.or. Torus Atmosphere Samples-j
+
The design pressure of the atmosphere sample circulating oump is 40'4 '1 psig. The containment or torus cannot be. sampled above 40 psig. Q. C.s Reactor Coolant Sample (v'ia RHR Pumps) - l
; f f
' A RHR Coolant Sample cann'ot'be collected above 450 psig Reactor Vess9[ i
. pressure.due to the design limitations of the RHR system. ; l D. Cooling Water , q s
Cooling l water musYbe available to E-604 and E-605 priorfo.Nirging a6d i collectinghliquf% sample' dove s s f, 150*F. j e j Panel Operatibn j<.a; 9i E. j t i To extend the life of the components M the atmosphere sampling section of the panel, the' exposure to high ter.)erature samples, i.e., normal .
- sample temperatu e's under accident condittpns', should be limited to the extent practical, during surveillance and trlining operations. )
' y' ,
.F. PASS DHST <
+
e Enlure the Make-O DMincralized Water System pressure is <140 psi prh3r to utilizing <this pressure to operate the PASS Demineralized Hater Stor3ge TanM <p PROCEDURk '
) ' '
' ] VIII. A. Chi 11erj 0oeratien f
, .s
- 1. Piping Station ChiH er 1 4 7
- a. $6 mal / .'" '
/
(1) Verifhcooling water supply and return line valves for E-604 and'E-605 ar'e open. <- j ( (2) Verify the control panel for the PASS cht GIr#'is energized by ensuring that the Heater "G" indicating' lamp is. ILLUMINATED on the control paneY'. g (3) Positico Chiller Pump Control Switch to "Oh. Process Pump "0N," and Power "0N" on the Chiller Control Panel, e( ,
- b. ,h6 normal >,, r.
v . l (1)/ Ifthecompresso[ fails,samplesmaybecooledting
' Water from the fire main.
3
- / 1 (2)l Attach a 1-1/2 inch hose to the machine,Uop south' wall L r' fire main header.
l .
/
,' i
' i
,, 5.7.4.1 4-5 Rev. 5 2, [
/ ,
s l b [ . $ ' E__ - cS
p f , i i% ;) i j t 's j (3) Attach the other end cf the fire hose to the hose
- s -
connection located just outside the cooling unit on the i coolant discharge line. m - (4)' Close the chiller unit supply and return isolation Jvalves and open the fire main supply valve at the
- lchiller and drain valve to sump.
j (5) Close the chiller return isolation valve.. (6) Open the fire main water supply valve. k O> / (7) Remove the pipe cap and open the chiller drain valve to 7'j o allow fire main water to drain to the floor.
,i L A *
, f (8) Open supply valve'at machine shop southwall fire main
't - , header and check for flow at chiller drain.
v < ea********************************************************************************** ['4 s CAUTION If the chiller unit supply'and return isolation valves are not closed before water from the' fire main is turned on, damage to the chiller unit could occur. a.e************************* *******************************************************
- 2. Sample Cabinet Chiller
()
- a. Check level of Chiller as displayed on level indicator. Fill as necessary ty. opening Chiller make-up water inlet valves.
B. Drainina the Trao. Sumo and Collector The following is in preparation for the drain and blow-out sequence
'".' which must be performed routinely before and after each s: ample is
~,
taken, and, whensvar the level in Trap T-717, which removes water from gassamplinglings,istoohigh.
, 1. Ensure that all control panel switches are in the Up and Off-position. Then insert the control panel key into the control ranel main power switch and select either A or B.
- 2. Observe the .ared radiation monitor (RI-507) on the control panel .
C-228 and reord its readings.
- 3. The following step should be performed only during an actual emergency and not during training or surveillance testing (Ref.
VA): N a. Open the sample station air control inlet damper, located on
- a. the upp'er right side of the gas sample cabinet. Unlock f- (using Hi-Hi rad. key) and open sample station air control h f- outlet damper. Observe a positive air flow on Meter PI-728.
d This flow ensures adequate ventilation of the sample cabinet. g
- 5.7.4.1.4-6 Rev. 5 l / / ;b ,
- t. ,y nj
. .c
k 4.. Fill.the demineralized water tank (V-501):
- a. When Make-Up Demin. Hater System is in service.
U (1) Ensure FO-14. Isolate Nitrogen to Tank Valve is CLOSED. ( 2)' Open water overflow valve E0.12 and release the air pressure. (3) Slowly open valve EQll to the demineralized water supply. (4) Observe overflow from discharge tube; close F0-13. (5) Open the nitrogen supply tank. (6) Open PCV-505 downstream of the nitrogen regulator. (7) Adjust regulator to 100 psi.
.o***********************************************************************************
CAUTION: Do not exceed 140 psi on the Demin. Tank as indicated on V-501.
- b. .Hhen Make-Up Demin. Water System is not in service.
() (1) Open water overflow valve F0-13 and release the air pressure. (2) Observe sight glass for water level. IIDIE If insufficient level exists, demineralized water must be poured into the tank from another service. (3) Close valve F0-13. (4) Open the nitrogen supply tank. (5). Open PCV-505, downstream of the nitrogen regulator. L j (6) Back-off the regulator to the nitrogen supply and open L the nitrogen supply valve (F0-14) on the top of the tank; adjust regulator to 100 psig. O 5.7.4.1.4-7 Rev. 5 E __ .
. 4
s i fiQIE: Demin. Tank level'must be monitored since < supply valve'will be closed. {.-
- 5. Open demineralized water flush line from storage tank, FO-12.. ,
. Check the water tank (V-501) pressure gauge and ensure pressure is 'I 6.
approximately 100 psig. 7.- Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627. liQIE: For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus muit be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will force liquid into the liquid sample loop. This can be verified by:
- a. Turning HC-626 to Position 5 (RHR on by-pass).
- b. Turn Flush System Switch HC-628-1 counterclockwise to Position 6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts demineralized water flowing through CV-626 and FCV-627.
- d. Observe that approximately 1 gpm flow is indicated on FI-664 (thus providing a positive indication that the discharge line to the torus is open).
9.. After being assured that the discharge line to the torus is open, drain the Collector Tank V-715 Trap T-717 and the sump by turning switch HC-715-1 clockwise'thru its eight positions. Pause approximately 5 seconds at each position. As soon as the switch is turned to Position 2, the liquid selection status light and Flush System Mode light adjacent to HC-628-1 will turn off and valves CV-628 and CV-626 will close. i 1 5.7.4.1.4-8 Rev. 5
- 10. After the drain and blow-out cycle is completed and switch
' HC-715-1 is again in the OFF position, the flush with demineralized water will automatically resume. Stop.the flush operation by turning HC-700 to. the "0FF" position.
- 11. Turn HC-626 to the UP and 0FF. position.
12.. Turn Flush System Switch HC-628-1 clockwise to the UP and 0FF q position. C. . Ob_tain Undiluted Liouid Samole and/or Dissolved Gas Grab Samole
- 1. - Slide the lead shielding drawer out so that the needles under the sample station enclosure are exposed.
- 2. Using a mirror and flashlight, check that the needles are straight and will be centered over the sample bottle.
HQIE: If the needles have been slightly dulled, as recommended, they will penetrate the aluminum retainers of the sample bottle without being damaged. Remove the lead stopper from the undiluted sample cask and. place a
'O 3.
15 mi sample bottle with an aluminum outer retainer ring and neoprine cap into the opening. Also, a slight coating of silicone grease on the end outer surface of the cap will make needle penetration easier. HOID The sample bottle must fit snugly in its holder and be aligned vertically. If necessary, place a small pad of rubber, felt or other soft gasket material sufficiently thick to hold the bottle against the upper yoke of the holder. Make sure the lifting lever is free. l 4. With the cask in the fully lowered position, roll it into position under the sample station. l l l l 5.7.4.1.4-9 Rev. 5
eoeecesoeceoceeoecocoeeeeeeeeeeeeeeecemoceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee CAUTION: 1
.V- /l ' Before admitting radioactive liquid into the sample station, proper q positioning of the bottle should be verified. <
1 l
? 5. ' Check sample bottle position as follows: l
- a. Set HC-616-1 to " FLUSH LOOP" (Position 3).
- b. Set HC-700 to " LIQUID."
- c. Set HC-626 to "RHR" (Position 4).
i
- d. Depress the plunger which causes the sample bottle to raise out of the cask and onto the two needles. When the bottle is in the correct position the." LIQ'D BOT'L IN" light on the control panel will change from red to green. !
H0JE: The tolerances are tight; each sample l bottle is not exactly the same and the needles are somewhat fragile. If pd necessary, replace needle (s) when misalignment is suspected. Do not rotate the sampler bottle when it is on or near the needles.
- e. Raise undiluted sample cask with hydraulic hand pump. The cask is positioned properly when its top fits into the bottom opening of the sample station.
- f. Stop pumping when the top cask ring is inside the sample i station opening and contact has been made between cask and '
sample station. If necessary, lower and reposition the cask.
- g. Turn HC-616-1 to the "UP AND OFF" position.
- 6. Purge system with fluid from desired source.
- a. Turn Sample Selector HC-626 to RHR BYPASS Position (5),
i O 5.7.4.1.4-10 Rev. 5
EQlE: k When HC-626 is in JET PUMP BYPASS Position (~T (1) or RHR BYPASS Position.(5), bypass (/- valve CV-626 will.be open.
- b. Adjust PCV-627 Flow Control (N2 supply to FCV-627) for 1.gpm
-discharge flow as indicated by FI-664.
- c. Maintain flow for 15 minutes.
- 7. Continue Flush
- a. After 15 minutes, turn the Liquid Sample Source Selector Switch HC-626 to "RHR." Position (4).
- b. Adjust PCV-627 Flow Control so that the discharge flow rate from FCV-627_is approximately 0.3 gpm, as this will minimize the pressure drop.
c.- . Leave in these positions for at least 20 minutes. In the interim,' proceed to Step 8. . Do not proceed to Step 9 until this 20 minutes flushing time..is completed.
- 8. Verify leak tightness of Dissolved Gas Collection Chamber.
- a. Turn the Dissolved Gas and Liquid Sample Switch HC-601 to P)
\s '
" START P-701" and " INSERT NEEDLE" position 1. Do not insert needle into the gas collection chamber. Observe that the P-701 starts and valve CV-622 rotates. The light on the mimic board will be on.
- b. When PI-662 is stable, turn Switch HC-601 to "0FF" or l
" RELIEVE PRESSURE /TAKE GAS SAMPLE" position (9).
- c. Confirm PI-662 does not rise more than 0.05 psia / min., this may indicate high air leak rate into the gas collection chamber.
NOTE 1: If PI-662 increases by more than 0.05 l psia / min., this may indicate high air leak i rate into the gas collection chamber. l Tighten the septum first and repeat above { steps. j O 5.7.4.1.4-11 Rev. 5 1 I
NOTE 2: If tightening the septum still yields high M, . pressure increases, replace the septum and
;, L / repeat above steps. If replacing the septum still yields high pressure increases, this indicates a leak in valve or fitting. Problems with degassing the liquid sample may be encountered unless
. repairs are made at this time.:
- d. Confirm PI-662 indicates 5.7 psia or lower.
ROIE: If Dissolved Gas Collection Chamber cannot be evacuated to below 5.7 psia,'this-usually. indicates the. vacuum pump P-701 requires rebuild or replacement. Do not { proceed with next step-unless a vacuum is drawn on dissolved gas collection chamber,
- e. Insert an open-ended' needle through~the septum via the needle
-(' guide into the gas collection chamber. This allows air to d purge into the collection chamber and the pressure should return to atmospheric pressure.
- 9. Continue Flush
- a. . Turn the Dissolved Gas and Liquid Sample Switch HC-601 to
" START P-601" Position (2).
- b. Observe liquid circulation pump P-601 is on by checking for the light on the mimic board for P-601 at the bottom and side of the control panel.
- c. Leave in these positions for approximately 20 minutes.
- d. Record the following on the DATA SHEET:
)
Flow per FI-664 Pressure per PI-661 Conductivity per CI-663 Radiation per RI-665 0,, 5.7.4.1.4-12 Rev. 5
(h ,
- 10. Isolate Sample
- a. Turn switch HC-601 to'" CIRC AND SEPARATE GAS" Position (3).
Leave in this position for approximately 30 seconds. n/- t . i b.- Turn HC-601 to " REMOVE NEEDLE" Position (4). Remove the needle inserted in Step VII.8.e. Hait until PI-662 reading y is stabilized. and is less than 5.7 psia. j
- c. Turn switch HC-601 to " CIRC AND SEPARATE GAS" Position (5);
-leave:in this position for 3 to 6 seconds. 1 1
- d. :When PI-662 reading.is stable, record'value as P1 on.the DATA SHEET (Attachment A).
- e. Turn switch HC-601 to " COLLECT DISSOLVED GAS" Position (6).
Hait for about 5 seconds. ~ Record pressure of PI-662 on. Data Sheet.
' f. Turn switch HC-601 to " CIRCULATE AGAIN" Position (7). Hait-for about 10 seconds.
- g. : Turn switch HC-601 to " COLLECT DISSOLVED GAS AGAIN" Position
.(8). Hait for about 5 seconds. Record pressure of PI-662 on Data Sheet.
- h. Repeat above. Steps (f) and (g) at least four times and until the difference between consecutive pressure readings from P-662 is less than 0.15 psia.
]
A
- i. Turn switch HC-601 to " RELIEVE PRESSURE /TAKE GAS SAMPLE" Position (9).
Sheet. Record final pressure of PI-662 as P2 on Data
- 11. Take Dissolved Gas Sample CAUTION:
Place radiation monitor to measure activity of syringe.
- a. Insert long needle on a gas tight syringe through the septum via needle guide into the gas collection chamber.
CAUTION: Hand contact with the syringe containing gas sample should not exceed 30 _; i seconds due to high dose rate. !
..**.... ***....** .*******.. **...**.....********************.....***.............. l V
o l' 5.7.4.1.4-13 Rev. 5 al__n 1_1_ _ __
- L, b. Draw a'2cc gas sample and lock the syringe. DO NOT HITHDRAW l
NEEDLE. L. [ ?- ca ******** ** ***.*****...*****.************************************************* CAUTION:
.If a radiation measurement taken by the H.P. 'is > 11 Rem /hr at the syringe, unlock.the syringe, and inject tha sample back into the gas collection chamber. Turn switch HC-652 to the left to relieve pressure and then remove the needle. Discard the needle and syringe. High dose rate in'the. syringe.
indicates water accumulation in the syringe. Repeat operating procedure. ' e****** ***......*******...** ...***** ..*******************************************
- c. Record sample time and the dose rate from the syringe.
- d. If PI-662 indicates greater than 15 psia, turn. switch HC-652 counter-clockwise to the " RELIEVE PRESSURE" position and hold in this position to relieve pressure in the gas collection chamber, as indicated by PI-662.
- e. Remove needle and syringe;and place in lead-lined syringe carrier for transport to Lab.
- 11. Take undiluted liquid sample,
- a. Turn HC-601 to Position 10.
G b. Press push-button HC-629-1 and hold for at least 10 seconds. b~ Liquid from the selected source will.be drawn into sample bottle. i
- c. Turn HC-601 to 0FF.
- d. Record sample time. .I
- e. Lower the liquid sample bottle into the large cask by pulling up on the plunger handle. )
CAUTION: Do not turn the plunger handle while lowering the sample bottle. Any twisting of the bottle with needles inserted will result in bent needles.
- f. Lower the cask on the cart by relieving the hydraulic oil pressure with the small petcock handle on the hydraulic cylinder.
1 5.7.4.1.4-14 Rev. 5 j l j i
-._____1------_____________
. Q
- g. Slide the lead. shield drawer back into the enclosure to cover -
the opening for.the needles. l 7 h. Roll the cask out from under the sample station and quickly
- i. A.. and have H.P. personnel take a radiation reading at the. top of the cask. Record this reading.
1e...**...**..************..***** .****e....************** .*****.*******...******.** CAUTION: There will be a column of radiation above the opening on the' top of the
- cask. .Do not' lean over'the cask before replacing the'1ead plug.
l .i. .Put the lead plug into the top of the cask, and take another L reading. Record this reading.
- 12. Request the Control Room to close PASS liquid sample line from applicable:RHR Loop in service.
- a. SV-5065-65 and 66 for Loop A, or
- b. SV-5065-83 and 84 for Loop B.
D. TRANSPORT SAMPLE
- 1. Open lab access door.
p 2. Carefully and slowly roll the cask away from the sample station A._/ and over to the lab access doorway.
- 3. Roll the cask through the doorway into the counting room - do NOT go into the counting room from the PASS.
- 4. Ger.ure access door on the PASS side of the wall.
E. Flush Ooeration for Undiluted Liouid/ Dissolved Gas
- 1. Always perform this section after taking undiluted liquid sample and/or a dissolved. gas sample.
- 2. Verify all system switches and valves are "UP" and "0FF" except Switch HC-626 will be set at "RHR" Position (4) and HC-700 will be set at " Liquid". Leave this switch at the present position.
- 3. Turn-the flush system Switch HC-628-1 to Position (2) " Start Flush" which will close the inlet lines and start the flush from i the demineralized flush water tank (V-501). Observe FI-664 for a positive indication of flow.
- 4. After RI-665 shows radiation levels have decreased significantly turn Switch HC-628-1 to Position 3, " Flush V-610 Loop". Observe Radiation Monitor RI-665.
5.7.4.1.4-15 Rev. 5
h
-5. When the radiaticn levels reacha' minimum turn switch HC-628-1 to Position 4, " Flush P-601 Loop." Observe Radiation Monitor RI-665.
E 6. When Radiation levels. reach a minimum turn Switch HC-628-1 to-f . ' Position 5. . " Flush P-601 Loop."- Observe radiation levels on
' Radiation Monitor RI-665. . 7. .- When the radiation levels' reach'a minimum turn Switch HC-628-1 to L : Position 6. " Flush Piping Station." The bypass.will be open for.
I
-this. flush and the main. flow will not pass RI-665 Radiation
-Monitor.
- 8. Turn Switch HC-628-1.to Position 7 -" Flush CV-622 Loop." Observe l- Radiation MonitorL RI-665.
L L 9. Turn Switch HC-626 to Position "0FF". L - 10. Turn Switch'HC-628-1 to Position "0FF".
- 11. If th'e. Radiation Monitor RI-665 did not indicate an acceptable radiation _ level at any step of this. operation, repeat Steps D.1 thru D.11.
F. Return System to Normal
- 1. Perform a drain of the. Trap,. Sump, and Collector per Section VIII.B.9 of.this procedure.
- 2. Ensure that all switches on PASS Control Panel, C-228, are in the l(] 3.
UP and 0FF position. Turn off the main power. switch and remove the key.
- 4. Close the demineralized water tank by closing valves F0-11 and FO-12.
- 5. Close the nitrogen supply valve on'.the top of the nitrogen tank.
- 6. Turn off the Piping Station Chiller by turning POWER switch to 0FF.
- 7. Close and lock the sample station ventilation air control inlet and outlet dampers.
- 8. Notify the Control Room to close the valves on the applicable RHR loop and the valves on the sample return line to the torus-(opened in Step V.C).
- 9. Notify the Hatch Engineer that the procedure has been completed.
- 10. Egress the sample station by way of the Machine Shop.
- 11. . Return to the 0.S.C. to review data collected during sampi,ing.
i- . O-5.7.4.1.4-16 Rev. 5
IX. ATTACHMENTS A. Data Sheet B. Instrument Checklist i i O I 1 I fO 5.7.4.1.4-17 Rev. 5
.) t ' k' '
ATTACHMENT A j ,V Data' Sheet:
~
Record The Data Pertinent-To This Procedure
- 1. Area Radiation. Monitor RI-507 mR/hr.-
- 2. Sample ~ Return: Flow ' FI-664 GPM
- 3.; -Liquid. Sample-Press.. PI-661' -PSIG
'4L l Conductivity ~ Indicator CI-663 /CM
- 5.1 . Liquid ~ Radiation' Monitor: RI-665 R/hr.
.. 6. . Dissolved Gas Press. PI-662 P1 - PSIA P-P-
-P='
2 PSIA 37.- Sample' Time for Dissolved Gas! Sample' l8. . Dose Rate on the Syringe R/hr
- 9. Sample Time for Liquid Sample
=10. Dose RateLon Vial-' Unshielded mR/hr.
- 11. Dose Rate on Vial Shielded mR/hr.
- 12.,: Instrument and Serial #
Remarks:- SIGNED DATE l f' l-lO: 5.7.4.1.4A-1 Rev. 5 l I I
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c BOSTON EDISON
-NUCLEAR OPERATIONS DEPARTHENT PILGRIM NUCLEAR POWER STATION 4
Procedure No. 5.7.4.1~.9 POST ACCIDENT SAMPLING SYSTEM IODINE / PARTICULATE SAMPLE FROM DRYHELL List of Effective Paaes
- 5. 7. 4.1_. 9-1 !
5.7.4.1.9-2 5.7.4.1.9-3 5.7.4.1.9-4 5.7.4.1.9-5 5.7.4.1.9-6 5.7.4.1.9-7 5.7.4.1.9-8
' 5.7.4.1.9-9 5.7.4.1.9-10 5.7.4.1.9-11 5.7.4.1.9-12' 5.7.4.1.9-13~
5.7.4.1.9-14 Attachments 5.7.4.1.9A-1
.5.7.4.1.98-1 5.7.4.1.98-2 Approved f cleir 0 e(ations Manager
~
Date Y O
/ /
Safety Evaluation: r e; 9 d/Not Required n - l l 5.7.4.1.9-1 Rev. 5
)
b- _ _
I.- LEURPOSE The purpose of this procedure is-to provide instructions for the' collection f .
.and transport of. Iodine / Particulate Samples from the.drywell.
II. DISCUSSION This: procedure includes information'on methods and precautions' pertaining to the. operation of the post accident sample panel in' regard to the collection. and transport of an Iodine / Particulate. Sample from the drywell.
;III. . APPARATUS'
'A; Radiation survey instrument for determining dose rate of. sample.
B. Silver zeolite cartridge (s) for the type of sample (s) to be taken. C. .47mm' particulate filters. D. Long-handled grapple, pole, rope, or other suit'able means to. maintain.a
. distance from. sample.
E.. Keys'- PASS Control. Panel.(CR-E or CR-F) and Chem Lab Acc6ss Door. [ (CR-182 or.CRA-20) F. Key for Ventilation Control Dampers (Hi-Hi Rad. Key)
' IV. REFERENCE MATERIAL
/ - A .' PNPS P&ID M-239 Post Accident Sampling and.H 2 /02 Analyzer System.
B.- PNPS Procedure No. 5.7.4.1. C. PNPS Procedure No. 2.2.132:(PASS Isolation Valve Operation).
' D. General: Electric Post Accident Sample Station Operating Manual,
-NEDC-24889.-
V. PREREQUISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all'the prerequisites possible at this point, discuss dose rates and remaining exposures of the' personnel involved in obtaining or. analyzing . samples, discuss stay. times, discuss a_ plan of action in the event of a spill or break, discuss the method of communications, review all the procedures that are used, and discuss the equipment needed to perform the procedures. c h.. I 5.7.4.1.9-2 Rev. 5 l
.B. Hatch Engineer' notified prior to initiating this procedure. .0btain permission to open sample station air control . outlet damper (Secondary Containment Penetration) to establish ventilation flow path from the (N'- sample station to the: Reactor. Building.
L) . ttoIE
- As per Memo NED 84-990, the Post'-Accident Sampling System can be tested semi-annually and during training periods without the system ventilation damper being open.
C. Request the Control Room to open.the following valves as per Operating Procedure Number 2.2.132:
- 1. PASS Liquid Return .Line.to Torus
- a. SV-5065-71 and 72 for Loop A, or
- b. SV-5065-77 and 78 for Loop B..
- 2. PASS' Sample Line.from applicable 2H /02 train in service (A or B).
- a. .SV-5065-67 and 68 for Train A, and
' '(] SV-5065-24A, 26A, 33A, and 37A
- b. SV-5065-81 and 82 for Train B and SV-5065-138, 208, 24A, and 26A
- c. SV-5065-73 and 74 (Drywell Gas Return -
Loop A) or SV-5065-75 and-76 (Drywell Gas Return - Loop B) HQlE Each of the PASS Isolation Valves Control Circuits has a logic system which will
" Trip" the valves closed upon receipt of a primary containment isolation signal.
The operator must override this logic, via a key, in order to operate the above valves. In addition, the H 2/02 isolations will require an override. O 5.7.4.1.9-3 Rev. 5
.D. Request Operations to check nake-up demineralized water system pressure to determine availability of this system for PASS flush purposes.
V ELTI System pressure should be <140 psi as noted in Step VIII.B.4 of this procedure. E. Fill out Attachment B to ensure there is sufficient instrumentation to perform _this procejure (For Surveillance Tests Only). Fill out Attachment A as noted in procedure. F. Direct access door to Rad. Chem. Lab. should be~ unlocked and ready to open. G. . PASS operator shall be accompanied by C&RP Tech. to monitor radiological conditions. I VI. PRECAUTIONS- I A. The indicator for the area radiation detector RI 507 is on the PASS ! Control Panel C-228. Its reading should be continually monitored upon initial entry.to the sample station and during the sampling process. B. If during the sampling leakage or a malfunction occurs, request the
/ Control Room to close the appropriate isolation valves. Leave the area ~]- if dose rates are prohibitive.
C. The operator should position himself at the front of Panel C-228 whenever.possible maintaining a maximum distance from the sample collection station at all times. D. The drain and blow-out sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so may result in damage to an air pump. Sample station alarms and lights , will indicate when draining is required The sample station operation i in progress will be stopped immediately by turning the sump drain i system switch HC-715-1 from 0FF to any other position. When switch ! HC-715-1 is returned to 0FF, the sample station will return to the operation previously interrupted, unless other switches were changed in 3 the meantime. E. The PASS Area Radiation Monitor is set to alarm at the following set points: Alert: 450mR/hr, High: 900mR/hr. F. If the PASS Area Radiation Monitor High Alarm alarms, immediately l notify the RETC for further instructions. j I h 5.7.4.1.9-4 Rev 5 i
l VII. LIMITATIONS
~
A. Radiological I l O: The sample station enclosure shielding is based on Reg. Guide 1.3 i source terms predicted I hour post-LOCA. The earliest a sample may be
, collected is one (1) hour after an LOCA. l B. Containment or Torus Atmosphere Samples The design pressure of the atmosphere sample circulating pump is 40 psig. The containment or torus cannot be sampled above 40 psig.
j . C. Cooling Hater-Cooling water must be available to E-604 and E-605 prior to purging and collecting a liquid sample above 150*F. l I D. Heat Tracing Heat tracing exterior to the sample panel must be energized for a I minimum of eight (8) hours prior to collecting an atmospheric sample. l l M l i I Applies if system was not in standby condition ; E. Panel Operation To extend the life of the components in the atmosphere sampling section of the panel, the exposure to high temperature samples, i.e., normal sample temperatures under accident conditions, should be limited to the extent practical during surveillance and training operations. F. PASS Demineralized Water Storage Tank (DHST) Ensure make-up demineralized water system pressure is <140 psi prior to utilizing this pressure to operate the PASS DHST. VIII. PROCEDURE A. Chiller Operation
- 1. Pioina Station Chilin
- a. Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open.
O 1 5.7.4.1.9-5 Rev. 5
m (2)' Verify the control panel for the PASS chiller'is
- energized by ensuring that.the Heater "0N" indicating lamp is. ILLUMINATED on the control panel.
- (3) Position Chiller Pump Control Switch to "0N," Process Pump "0N," and Power "0N" on the Chiller Control Panel. ;
- b. Abnormal (1) If the compressor.failsi samples'may be cooled using.
water._from the fire main, i l (2)' Attach a:1-1/2 inch h'seo to the machine shop south: wall fire main header. . (3) Attach the other end of the fire hose to the. hose ! connection located just outside the cooling 7 unit on the
- coolant discharge _line.
(4) Close the chiller supply isolation valve.' i 1 (5) 'Close the chiller return isolation valve. . ! (6) Open the fire water supply valve. (7) Remove the pipe cap and open the chiller drain valve to allow fire water to drain-to the floor. CAUTION If the chiller unit supply and return isolation valves.are not closed before water from the fire main is turned on, damage to the chiller unit could q occur. 1
.)
(8) 0 pen supply valve at machine shop south wall fire main header.
- 2. Sample Cabinet Chiller
- a. Check level of Chiller as displayed on level indicator. Fill as necessary by opening the chiller make-up water inlet -
valves. B. Drainina the Trao. Sumo and Collector The following is in preparation for the. drain and blow-out sequence 1 which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling lines, is too high.
- 1. Ensure that all control panel switches are in the Up and Off !
\ .
position. Then insert the control panel key into the control ' panel main power switch and select either A or B.
- - 5.7.4.1.9-6 Rev. 5 t l I I C__ _ _ _ _ _ _ _ _ _ __ _
n ..). 7 n-c r
- 2. - Observe'the' area radiation monitor (RI-507) on the control panel I
'C-228 and record its readings.
O V 3.- The following step should be performed only during an actual l n emergency and not'during training or. surveillance testing (Ref. t VA):
- a. . Open the. sample station' air control inlet damper, located on the upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad.-key) and open sample station air control
- )- outlet damper... 0bserve.a positive air flow on Meter PI-728.
This. flow ensures adequate ventilation of the sample cabinet,
~
r
- 4. Fill the demineralized water tank'(V-501): 3 1
a.. When Make-Up'Demin. Hater System.is in service.
-(1) . Ensure FO-14, Isolate Nitrogen to Tank Valve is CLOSED.
(2). Open water overflow valve E013 and release the air pressure. (3) Slowly open valve EQll to the demineralized water supply. (4)- Observe overflow from discharge tube; close. F0-13. (5) Open the nitrogen supply tank; adjust regulator to 100 psi. h (6) Open PCV-505 downstream of the nitrogen regulator. CAUTION Do not exceed 140 psi'on the Demin. Tank as indicated on V-501.
- b. When Hake-Up Demin. Water System is not in service.
(1) Open water overflow valve FO-13 and release the air pressure. (2) Observe sight glass for water level. HQlE If insufficient. water level exists, demineralized water must be added to the tank from another source. 5.7.4.1.9-7 Rev. 5
(3)- Close Valve FO-13. (4) Open the. nitrogen supply tank. d (5). Open PCV-505, downstream of the nitrogen regulator. , (6) Back-off the regulator'to the nitrogen-supply and open the nitrogen supply valve (FO-14) on'the top of the tank; adjust regulator to 100 psig. E01E Demin. Tank level must be monitored since supply valve will be closed.
- 5. Open demineralized water.f1'ush line from. storage tank,.F0-12.
r
- 6. Check:the' water tank-(V-501) pressure gauge and ensure pressure is approximately 100 psig.-
- 7. Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627.
.O nott For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627
is required.
- 8. The discharge line to the' torus mnLt be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will force liquid into the liquid sample loop. This can be verified by:
- a. Turning HC-626 to Position 5 (RHR on by-pass). l
- b. Turn Flush System Switch HC-628-1 counterclockwise to l Position 6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts demineralized water flowing through CV-626 and FCV-627.
- d. Observe that approximately 1 gpm flow is indicated on FI-664 i (thus providing a positive indication that the discharge line j to the torus is open). q i
. O.
5.7.4.1.9-8 Rev. 5 l z_ _ -- - _ _ __ _ .
n 7 w , f ?O w , . . After being assured that the discharge line to the torus is open,
- 9. .
% . drain the CollectorcTank V-715. Trap T-717gand~the sump by turning'
>W q, : switch HC-715-l' clockwise thru its eight positions. Pause JWV
- approximately 5' seconds at each. position. As soon as the switch is turned,to Position ~2, the liquid selection status light and
^* '
Flush System Mode light adjacent-to HC-628-1.wi_11 turn off and . valves:CV-628 and CV-626 will'close. 11 0. . After the drain and. blow-out cycle:is' completed and switch?
,1 HC-715-l'is again in the OFF. position ~, the flush with.
demineralized. water will automatically resume. Stop the-flush-operation ~by turning HC-700 to the *0FF" position.
,1
~
- 11. ' Turn'HC-626-1 to the UP and 0FF position.
'I 12. : Turn Flush System Switch HC-628-.1 clockwise to the UP and 0FF.
position. C. Obtain Iodine / Particulate Samole
- 1. PlacetheLiq0id/Gasselectorswitch,HC-700,totheGASposition.
K01E
<1 If sample cylinder is already loaded and in place, go to VIII.C.20.
- 2. At Samp' ling Station, C-229 loosen the T-handle jacking screw on I
~the front of the particulate / cartridge drawer.
f
- 13. Remove the drawer from the station and place it on the floor.
-i
- 4. Loosen'the black knob on the front of the drawer to release the sample <;ylinder contained within.
- 5. Remove the sample cylinder from the drawer.
- 6. Identify the'end of the cylinder which contains the particulate filter-holder, grasp the holder, and pull it out of the cylinder -
put-it aside.
- 7. Place a silver zeolite cartridge in the cylinder with the flow 1 arrow pointina down (printing will be right side up).
- 8. When cartridge settles at the bottom of the cylinder, insert an 'I O-ring on top of it - IMPORTANT - be sure 0-ring lies flat on the cartridge.
i b Before using, always check 0-rings - replace and/or lubricate as necessary, 1 5.7.4.1.9-9 Rev. 5 I i
.l J_?Y? . - - - _ - - -
a
- 9. Repeat step 8 until' four cartridges and 0-rings have been loadedi ,
into the cylinder. j e v3 sat The last item to be inserted should be an 0-ring. .
- 10. Place the cylinder aside, and open the particulate filter- holder '!
(put aside in step 6) by pulling the bottom off.
- 11. Remove the fine-mesh screen.
- 12. Place a'47mm filter into the chamber of'the holder with the rough surface facing the opening.
- 13. Place the' fine-mesh screen on the filter, and close the filter-holder by pushing the bottom into the upper portion. 1
- 14. Mate the particulate filter-holder to the cylinder by pushing it into the void space above the top cartridge.
- 15. Look at the bottom of the cylinder for the critical orifice size, and record'the size on the DATA SHEET.
- 16. Replace the filter / cartridge holder in the drawer with the opening in the particulate section facing the end of the drawer with the Q black knob and T-handle jacking screw.
j
- 17. Tighten the black knob. \
- 18. Insert the drawer back into the sample station. [
- 19. Lock the drawer into place by tightening the T-handle jacking ,
. screw.
- 20. Verify that the drawer is properly positioned by observing the green light, " CART'G IN", on the control panel near the HC-712 selector switch. If the light is not on, reposition the drawer.
CAUTION l Do NOT go any further with this procedure until the light comes on.
............................*......*****..........******* **********..... u.........
l 21. Set timer KC-712 to appropriate time, and note this time setting : on the DATA SHEET. i 5.7.4.1.9-10 'Rev. 5 !
y _ gs <, 4N ,f k 22. Turn the Gas Sample Selector Switch, HC-723'to Position 1,
. Dry w11 ATM."
L; L - (T 23. Tu the' Sample Switch, HC-7)t, to." CIRCULATE GAS" Position 2 and - lgM l lehy9 in this position for atr)past 12. minutes to purge ;the sample
- . line' .
4
/
' '}ff EDIE 9
. Sample purge times. differ for Loop A and
. Loop 8, due to piping configuration.
- 1. Loop A purge time.is 12 minutes
,h ,
. , 2; Loop B purge time is 6 minutes
, .If dose rates.are prohibitive Loop B d" ~s hould be considered for sampling
.$ requirements.
- 24. Verify 'that the. flow' as read by the rotometer through- the sample -
enclo s re window is in the expected range of 20 to 30 SCFH. s
- 25. - On the DATA SHEET, rtcord the following:
- a. FlowFromFf-725 '
- b. Temperature from TI-724
- c. Pressures from PI-726 and PI-727 w' y E01E u
pressure gages 726 and 727 should read the same at this point in time. 4; . ., y :g h-y '
- d. Dose rate from the, Cartridge Radiation Monitor, RI-704.
1 . > i
- 26. At this point, the CMP n. ember of the tum goes to Panel C-228 and a the Operator goes to (or stays at) the Sampling Station, C-229, and:
~" a. When Operator indicates he is ready, the C&RP member turns selector switch HC-712 to " FLOW THRU CARTRIDGE" Position 3, and immediate1v notifies Operator of this act. L s y Q l . F 5.7.4.1.9-11 Rev. 5 3
?
- -___n_- ~ '
- b. .The Operator then quickly observes the readings on PI-726 and PI-727, and records them on the DATA SHEET.
~
v In order for the flow through the filter cartridge to be precisely metered, the pressure drop across the-flow orifice must be critical (sonic velocity). Critical pressure will occur when the pressure downstream of the' orifice is no more than 50% of the upstream pressure, i.e., DP 150%. Always confirm critical flow from the PI-726 and PI-727 pressure readings taken during the timed sample.
- c. After the timer has stopped, the C&RP member turns selector switch HC-712 to " EVACUATE CARTRIDGE" Position 4 (a vacuum will be quickly drawn on the system).
- d. Record sample time.
- 27. After approximately 10 seconds turn HC-712 to Position 5, " FLUSH CARTRIDGE". Nitrogen will be flushed through the filter cartridge to remove Krypton and Xenon gases. This purge should be cor.tinued until RI 704 becomes constant (approximately 20 seconds).
) 28. Rotate'HC-712 clockwise up to its "UP and 0FF" position,
- 29. Turn all other switches to the "UP and 0FF" position.
CAUTION There is no shielding cask provided for the cartridge retainer and filters. Therefore the operator should keep a maximum distance from the sample until it has been surveyed.
............................. **................................................c...
- 30. The C&RP members of the team will now take a contact dose-rate reading on the face of the particulate / cartridge drawer. If this reading is no areater thaD 2.5 R/hr the Operator can:
I
- a. Loosen the T-handle jacking screw.
l 0 l I 5.7.4.1.9-12 Rev. 5 f i
._..u_m_. )
9 'r g -. -3 ,-
- b. SLOHLY ppen the drawer to a point where the C&RP n[ ember can monitorithe dose-rate on the cylinder on contact in the b
,.s vitiintti of, the first charcot.! cartridge. 4 .
g ; e v o..................................**..............a.**.o**,.........'............. CAUTI0ti , a
,y A dose-rate greater than 2.5 R/hr on the face of the drawer for a 10 sec.
collectior. is indicative of a situation much worse than that which was . ,' < calculated fof PhPS in a " worse case" scenario. In such a case, leave the - drawer alone, regorf this information..to the T.S.C., shut the PASS down per Section D, and report back to the,0.S.C'. Vntle this information is being evaluated. , j 1 (,
..................... ............................................../.........,....... . . ,
, [ !
)
- 31. With the C&RP mem6eW helpir.g, remove the drawer from the sampling i station and place it on;the floor.
................e***.***..../.***.......****...****o......**.......,..........**<w..***
I CAUTION , Other th'an at.the front, there is no shielding on the dfawerl Stry Ns'far , away from it as possible while handling. v S n, o f, y, I. ' u ...................................f. ..........................e...... .............
- 32. !
Loosenthtbfckknobonthefrontofthedrawer. ,o ,
- 33. .Using h*long-handled grappling tool or other such implenent, i remove *he particulate / cartridge holder from the drawer, and l quickly transfer it through the access door to the counting' room, 1 plac1997 1t on the floor. -
34d Pushtt M grapple into the room toward the counting room entrance j so hn it can be used by someone entering from the lab to s retrieve the samples. ,
- 35. Close the access door on the PASS side of the ve11. i '
- 36. Place the Amph spare particulate / cartridge Fo yet in the drawer
- 37. TightentheLIcckknobtosecurekheholder ,
/
U; I
- 38. Replace the drawer in the sample station. 1
- 39. Tighten the T-hi.,ndle jatking screw to lock the drawer in place. -
, j 5.7.4.1.9-13 Rev.~5'
)
~l ! {
l'
. 40. . Verification of ptcper drawer positioning is cbtained by lighting
[% ;of> green light,' " CART'G IN", 'on the control panel near the HC-712
- g. 'selectorywitch. If-light does not come on:
I!d;j .
- a. Loosen T-ha9dle jacking screw.
p mic ti f b. . Pull drawer out a little way. y - w .g r 3
- c. Re-insertdrawir.- '
p J~/f r -d. Tighten'T-handle jacking screw;
~
! D. Return System to Normal
.i!
4' ' . r U 'l. Perform a drain of-the Trap, Sump,.and Collector per Section VIII.B 9 of this procedure, f , i . 4 L, 'N in Ensure that all switches on PASS Control Panel, C-228, are in the UP and 0FF position. l ,P
^,
p 3. Turn off the main power switch and-remove the key.
- 4. Close the demineralized water tank by closing valves F0-11 and F0-12.-
i'
- 5. Close the' nitrogen supply valve on the top of the nitrogen tank.
- 6. Close and lock the sample station ventilation air control inlet
.g .Jj ,
and outlet dampers. 7 .' , Securethe$pipingstationchillerby.turningpowerswitchto0FF.
- 8. Notify tho' Control Room to'close the valves on the applicable RHR Loop aqd tLe valves on the sample return line to the torus (opened in Step V.C).
4' 9. Notify'the Hatch Engineer that the procedure has been completed. M. 10 Egress the sample station by way of the machine shop.
- 11. Report back to the 0.S.C. for further instructions.
IX.~ ATTACHMENTS
# '4 3 'A. Data She_et.
y
, e
, B. Instrument" Check 11st
,3 3p ,
J.3 , , ,
'b ( p p ,
L O. 5.7.4.1.9-14 Rev. 5 s b ,[ g
. ATTACHMENT A-7 Data Sheet
%' -)5 Record The. Data Pertinent To This Procedure
..q .
-1. Area Radiation Monitor RI-507 mR/hr..
2.. Orifice Size ~ L/ min.
- 3. Timed Sample Yes or No
- a. Timer Setting KC-712 sec.
- 4. Circulate Gas (not through' cartridge)
- a. Sample Flow. .FI-725 SCFHCl) b.-Gas Sample Temperature TI-724 *F
- c. Gas Sample l Pressure PI-726 PSIG/in.Hg.
.d. E-703 Inlet Pressure PI-727- PSIG/in.Hg 3 fq (Gas Sampler Cooler) x> e. Cartridge Radiation Monitor - RI-704 mR/hr.
5.. Actual Sample (Critical flow thru cartridge)
- a. Gas Sample Pressure PI-726- PSIG/in.Hg
- b. E-703 Inlet Pressure PI-727 PSIG/in.Hg
- c. Sample Time
- 6. Dose Rate on Particulate / Cartridge Drawer mR/hr. !
- 7. Instrument and Serial #
Remarks:- r, 530 (I) Corr. Flow (SCFH)-Flow I-7 [Rotgx P(osio) + 14,1 14.7 460 + T(*F)
! f-? SIGNED DATE O
5.7.4.1.9A-1 Rev. 5 E y-
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i d n l 5 M e r r v l a e a t 0 T P P i F R g S T t 5 n t - d I ~ o - o e e s c n e i r B V a u r r
/ *B' K L C t e
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;s BOSTON EDISON NUCLEAR OPERATIONS DEPARTMENT PILGRIM NUCLEAR POWER STATION Procedure No. 5.7.4.1.11 POST ACCIDENT SAMPLING SYSTEM IODINE / PARTICULATE SAMPLE FROM REACTOR BUILDING v
List of Effective Paaes
- 5.7.4.1.11-1 5.7.4.1.11-2:
5.7.4.1.11-3 5.7.4.1.11-4' 5.7.4.1.11-5'
.. 5.7.4.1.11 5.7.4.1.11-7
.O. 5.~7.4.1.11 5.7.4.1.11 5.7.4.1.11 5.7.4.1.11-11 5.7.4.1.11-12 5.7.4.1.11-13
-5.7.4.1.11-14 Attachments 5.7.4.1.11A-1
- 5.7.4.1.118-1 5.7.4.1.11B-2
///l /n Approved W h & 4e e p -
/uclearOp(ationsManager L Date ,
- f. Safety Evaluation. ,sw o.. w ,..ot Required yLO. !
5.7.4.1.11-1 Rev. 5- I
i i I'. . ~' PURPOSE L /"< - The.purpcie of this procedure is-to provide instructions for t'e h collection ab : and transport of Iodine / Particulate Samples from the Reactor Building. II. DISCUSSION
-This procedure includes information on methods and precautions pertaining to a the operation of the post accident sample panel in regards to the collection and transport of an. Iodine / Particulate Sample from the Reactor Building.
'III. APPARATUS A. Radiation survey instrument for determining dose rate of sample.
B. Silver. zeolite cartridge (s) for the type of. sample (s) to be.taken. C. 47mm particulate filters. D. Long-handled grapple, pole, rope or other suitable meanscto maintain a
-distance from sample.
E. Keys - PASS Control Panel CR-E or CR-F and Chem Lab ' Access Door CR-182 - 6 or-CRA-20. F.. Key for Ventilation Control Dampers (Hi-H1 Rad Key)
. IV. REFERENCE MATERIAL
' A. PNPS P&ID M-239 Post Accident Sampling and H 2 /02 Analyzer System.
B. PNPS Procedure No. 5.7.4.1. C. PNPS Procedure No. 2.2.132 (PASS Isolation Valve Operation). D. General Electric Post Accident Sample Station Operating Manual, ! NEDC-24889. V. PREREQUISITES A. A pre-job briefing shall take place with all. personnel involved in performing this procedure. The ',urpose of. this briefing is to perform all the prerequisites possible Lt this point, discuss dose rates and remaining exposures of the personnel involved in obtaininc or analyzing samples, discuss stay times, discuss a plan of action in .he event of a ! spill'or break, discuss the method of communications, review all the procedures that are used, and discuss the equipment needed to perform the procedures. I B. Hatch Engineer notified prior to initiating this procedure. Obtain I permission to open sample station air control outlet damper (Secondary j Containment Penetration) to establish ventilation flow path from the i sample station to the Reactor Building. 5.7.4.1.11-2 Rev. 5 ( i ____im___.1._.__- _ _ . . . . _ . _ J
i NOTE y'b L
'As'per Memo NED 84-990,:the_ Post-Accident Sampling System can.be tested semi-'-
annually-and during training _ periods
=without..the system ventilation damper-being.open.
- C. Request thel Control Room _to open the following valves as per Operating Procedure' Number 2~.2.132:
-PASS-Liquid Return Line to Torus 1..
.a. SV-5065-71 and 72 for-Loop A, or
- b. SV-5065-77 and 78 for Loop B.
NOTE-Each of the~ PASS Isolation Valves Control Circuits has a logic. system which will
" Trip" the valves closed upon receipt of a :
primary containment isolation signal. The operator must override this. logic, via a o key,--in order to operate the above Jvalves. In' addition, the H2 /02 isolations will require _an override. D. Request Operations to provide system. pressure reading for the Make-Up Demin. Water System. o E. Fiil out Attachment B to ensure there:is sufficient instrumentation to per,orm this procedure (For Surveillance Tests Only).
' Fill out Att;chment A as indicated in= procedure.
F. Direct access door to Rad. Chem. Lab. should be unlocked and ready to open. G. PASS operator shall be accompanied by C&RP Tech. to monitor y radiological conditions. (- I 5.7.4.1.11-3 Rev. 5 e L_ _ _
VI. PRECAUTIONS
~x A. The indicator for the area radiation detector RI-507 is on the PASS V Control Panel C-228. Its reading should be continually monitored upon initial entry to the sample station and during the sampling process.
B. If during the sampling leakage or a malfunction occurs request the Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive. C. The operator should position himself at the front of Panel C-228 whenever possible maintaining a maximum distance from the sample collection station at all times. D. The drain and blow-out sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so may result in damage to an air pump. Sample station alarms and ' lights will indicate when draining is required The sample station operation in progress will be stopped immediately by turning the sump drain system switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will return to the operation previously interrupted, unless other switches were . J changed in the meantime. E. The PASS Area Radiation Monitor is set to alarm at the following set points; Alert: 450 mr/hr High: 900 mr/hr. i J_T ' V F. If the PASS Area Radiation Monitor High Alarm alarms, immediately notify the RETC for further instructions. VII. LIMITATIONS A. Radiological The sample station enclosure shielding is based on Reg. Guide 1.3 ) source terms predicted I hour post-LOCA. The earliest a sample may be collected is one (1) hour after an LOCA. B. Containment or Torus Atmosphere Samples i The design pressure of the atmosphere sample circulating pump is 40 psig. The containment or torus cannot be sampled above 40 psig. l C Cooling Water Cociing water must be available to E-604 and E-605 prior to purging and collecting a liquid sample above 150*F. , D. Heat Tracing Heat tracing exterior to the sample panel must be energized for a j minimum of eight (8) hours prior to collecting an atmospheric sample.
\q
_J l NOTE: Applies if system was not in standby condition. , i l 5.7.4.1.11-4 Rev. 5 )
g -- - _ . _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ g l l E. Panel Operation n To extend the life of the components in the atmosphere sampling section of the panel, the exposure to high temperature samples, i.e., j () normal sample temperatures under accident conditions, should be
-limited to the extent practical during surveillance and training operations. 1 F. PASS DWST
' Ensure Make-Up Demin. Water System pressure is <140 psi prior to utilizing this pressure to operate the PASS DWST.
VIII. PROCEDURE A. Chiller Operation
- 1. Piping Station Chiller
- a. Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open. I (2) Verify the control panel for the PASS chiller is energized by ensuring that the Heater "0N" indicating lamp is ILLUMINATED on the control panel.
(3) Position Chiller Pump Control Switch to "0N," Process
/)
k/ Pump "0N," and Power "0N" on the Chiller Control Panel,
- b. Abnormal (1) If the-compressor fails, samples may be cooled using water from the fire main.
(2) Attach a 1-1/2 inch hose to the machine shop south wall fire main header. (3) Attach the other end of the fire hose to the hose I connection located just outside the cooling unit on the coolant discharge line. (4) Close the chiller unit supply and return isolation valves and open the fire main supply valve at the chiller and drain valve to sump. (5) Close the chiller return isolation valve. (6) Open the fire water supply valve. (7) Remove the pipe cap and open the chiller drain valve to i allow firewater to drain to the floor. () n Rev. 5 5.7.4.1.11-5 >
** ....********4 ...*******......... ******.......***** **** .......................
e'% CAUTION V If-the chiller unit supply and return isolation valves are not closed before water from the' fire main is turned on, damage to the chiller unit could
. Occur, j
(8) Open supply valve at machine shop south wall: fire main header. CAUTION If the sump drain valve is not opened, no sample cooling will occur.
- 2. Sample Cabinet Chiller
- a. Check level of Chiller as displayed on level irdicator. Fill as necessary using the Chiller.make-up demin. water inlet i valves.
Draining the Trap. Sump and Collector
'(')
v B. The.following is in preparation for the drain and blow-out sequence which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling lines, is too high.
- 1. Ensure that all control panel switches are in the Up and Off i position. Then insert the control panel key into the control panel main power switch and select either A or B.
Observe the area radiation monitor (RI-507) on the control panel 2. C-228 and record its readings. A
- 3. The following step should be performed only during an actual emergency and not during training or surveillance testing (Ref. 3 VA):
- a. Open the sample station air control inlet damper, located on the ' upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad. key) and open sample station air control outlet damper. Observe a positive air flow on Meter PI-728.
This flow ensures adequate ventilation of the sample cabinet. l 4. .111 the demineralized water tank (V-501): l () a. When Make-Up Demin. Water System is in service. 5.7.4.1.11-6 Rev. 5 ! ( l u _. .
- m. =-- ,_
U< , j, a i L.
- ( l )' Ensure FO-14, Isolate. Nitrogen to Tank Valve is. CLOSED.
m T/i -(2). Open water overflow valve F013 and. release the air-V i pressure. (3) Slowly open valve F0li to.the demineralized water supply.
-(4) .0bserve overflow from discharge. tube; close F0-13.
~(5) .Open the nitrogen supply tank.
.(6) Open PCV-505 downstream of thel nitrogen regulator. .
(7). Adjust regulator to 100 psi.. l CAUTION Do not exceed 140 psi on the Demin. Tank as-indicated on V-501. c
.b. When Make-Up Demin.' Water-System is not in service.
-(l) Open. water overflow valve FO-13'and release the air.
pressure. () (2) Observe sight glass for water level. NOTE
-If insufficient water level exists, demineralized water must be added to the tank from another source.
(3) Close valve FO-13. (4) -Open the nitrogen supply tank. (5) Open PCV-505, downstream of-the nitrogen regulator. (6) Back-off the regulator to the nitrogen supply and open the nitrogen supply' valve (FO-14) on the top of the ' tank; adjust' regulator to 100 psig. NOTE Demin. Tank level must be monitored since ' supply valve will be closed. h 5.7.4.1.11-7 Rev. 5 __.__-.-_- - , . i
- 5. Open demineralized' water flush line from storage-tank,.FO-12.
- 6. Check the water tank (V-501) pressure gauge and ensure pressure is-q_ approximately 100 psig.
. (f
- 7. Adjust PCV-627 to obtain 15 psi on gauge adjacent to'PCV-627.
r NOTE For FCV-627 to be open, a minimem of 3 psi on the' gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus mutt be open; otherwise, the 100 psi. nitrogen used for discharging the collector tank (V-715) will force liquid into'the liquid sample loop. _This can'be vertfled by:
- a. Turning HC-626 to Position 5 (RHR on'by-pass).
- b. Turn Flush System Switch ~HC-628-1 counterclockwise to Posttion 6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts'demineral_ized water flowing'through CV-626 and FCV-627.
- d. Observe that approximately 1 gpm flow is indicated on FI-664 C.
(thus providing a positive indication that the discharge'line
\ to the torus is open).
- 9. After being assured that the discharge line to the torus is open, drain the Collector Tank V-715, Trap T-717 and the sump by turning switch HC-715-1 clockwise thru its eight positions. Pause approximately 5 seconds at each position. As soon as the switch is turned to Position 2, the 11guld selection status light and Flush System Mode light adjacent to HC-628-1 will turn off and valves CV-628 and CV-626 will close.
10.- After the drain and blow-out cycle is completed _and switch j HC-715-1 is again in the OFF position, the flush with demineralized water will automatically resume. Stop the flush f operation by turning HC-700 to the "0FF" position. j
- 11. Turn HC-626-1 to the UP and 0FF position. ]!
I
- 12. Turn Flush System Switch HC-628-1 clockwise to the UP and 0FF l I
position. C. Obtain Iodine / Particulate Sample
)
I'
- 1. Place the Liquid / Gas selector switch, HC-700, to the GAS position.
[ 5.7.4.1.11-8 Rev. 5 I l
--___L., - I
NOTE { If sample cylinder is already loaded and yv p ltf in place, go to VIII.C.20. U 2. At; Sampling Station, C-229,~ loosen the T-handle jacking. screw on
.the front'of the particulate / cartridge drawer.
- 3. . Remove-the. drawer from the station and place it on the floor.
'4. Loosen the black knob on the front of'the drawer to' release the.
sample cylinder contained.within.
.5. . Remove the sample cylinder from the drawer.
- 6. Identify the end of the cylinder which contains the particulate filter-holder, grasp the nolder, and pull it out'of thel cylinder -
put it.aside.
- 7. Place'a silver' zeolite cartridge in the cylinder with the flow arrow pointina down (printing will be right side up).
8.. When' cartridge settles at the. bottom of the cylinder,-insert an 0-ring on top of it --IMPORTANT - be sure 0-ring lies flat on'the-cartridge. NOTE Before using,.always check 0-rings - i replace and/or lubricate as necessary. 1
'l
- 9. , Repeat step'8 until four cartridges and 0-rings have been loaded into the cylinder. 1 1
.l NOTE The last item to be inserted should be an 0-ring.
- 10. Place the cylinder aside, and open the particulate filter- holder s (put aside in step 6) by pulling the bottom off.
- 11. Remove the fine-mesh screen.
I nV 5.7.4.1.11-9 Rev. 5 l
- 12. Place a 47mm filter into the chamber of the holder with the rough surface facing the opening, im 1._,[ '13., Place the fine-mesh' screen on the filter, and close the:
- filter-holder-by pushing the bottom into the upper portion.
- 14. Mate the particulate filter-holder to. the cylinder by p'Jshing it-
'into the. void' space above the top cartridge.
- 15. Look at the bottom of the cylinder for the critical orifice size, and record the size on the DATA SHEET.
- 16. Replace the filter / cartridge holder in the drawer with the opening in the particulate section facing the end of.the drawer with the black knob and T-handle jacking screw.
- 17. . Tighten the' black knob. ,
- 18. Insert the drawer back into the sample station.
- 19. Lock the drawer-into place by tightening the T-handle jacking screw.
- 20. Verify that the drawer is properly positioned by observing the green light, " CART'G IN", on the' control panel near the HC-712 selector switch. If-the light is not on, reposition the drawer.
?' 'k/ CAUTION 00 NOT.go any further with this procedure _until the light comes on.
- 21. Set timer KC-712 to appropriate time, and note this time. setting on the DATA SHEET. >
- 22. Turn the Gas Sample Selector Switch, HC-723 to Position 3, "SEC CONTAIN". ,
1
- 23. Turn the Sample Switch, HC-712, to " CIRCULATE GAS" Position 2 and :
leave in this position for at least 12 minutes to purge the sample line. NOTE L Sample purge times differ for Loop A and
' Loop B due to piping configuration.
- 1. Loop A purge time is 12 minutes. '
- 2. Loop B purge time is 6 minutes.
If dose rates are prohibitive, Loop B fx should be considered for campling (,,) requirements. 1-l 5.7.4.1.11-10 Rev. 5
m-
+
l 2 4 '. Verify that the flow as read by the rotometer through the sample enclosure window is in the expected range of 20 to 30 SCFH. j1 1 AI -25. ,On the-DATA SHEET, record the following: L Flow from FI-725
~
a. ib. Temperature from TI-724
- c. Pressures from PI-726 and PI-727-NOTE-Pressure gages 726'and.727 should read the same at this point in time.
- d. Dose rate from the Cartridge Radiation Monitor, RI-704.
- 26. At this point the C&RP member of the team goes to Panel C-228 and the Operator goes to (or stays at) the Sampling Station, C-229, and:
- a. WhenOperatorindicatesheisready,theC&RPmember turns selector switch'HC-712 to " FLOW THRU CARTRIDGE" Position 3, and immediately notifies Operator of this act.
- b. The Operator then quickly observes the readings on PI-726 and g -PI-727, and records then on the DATA SHEET.
G. NOTE In order for the flow through the filter cartridge to be precisely metered, the pressure drop across the-flow orifice must
~
be critical (sonic velocity). Critical pressure will occur when the pressure down-stream of the orifice is no more than ! 50% of the upstream pressure, i.e., DP 1 50%. Always confirm critical flow from the PI-726 and PI-727 pressure readings taken during the timed sample,
- c. After the timer has stopped, the C&RP member turns selector switch HC-712 to " EVACUATE CARTRIDGE" Position 4 (a vacuum will be quickly drawn on the system).
- d. Record sample time.
.h t 5.7.4.1.11-11 Rev. 5
_ _ _ _ _ - - - _ _ _ _ . _ - . _ _ _ _ _ _ _ _ _ _ _ . _ - _ - ~
/
- 27. After approximately 10. seconds turn HC-712 to Position 5, " FLUSH CARTRIDGE". . Nitrogen will be flushed through the filter cartridge
% to remove Krypton.and Xenon gases. This purge should be continued
^, ) ~-
. untti RI-704 becomes constant-(approximately 20 seconds)..
- 28. Rotate HC-712 clockwise'up.to its "UP and 0FF"' position.
;29. Turn all- other switches' to the "UP and 0FF" position.
CAUTION There is'no' shielding' cask provided for the cartridge retainer and filters. Therefore.the operator should keep a maximum distance from the sample ~untit-it has been surveyed.
- 30. The C&RP member of the team will now take a contact dose-rate reading on the face of the particulate / cartridge drawer. If this reading is no creater than 2.5 R/hr the Operator can:
- a. Loosen the T-handle jacking screw.
- b. SLOHLY open the drawer to a point where'the C&RP member can monitor the dose-rate on the cylinder on contact in the j_.
vicinity of the first charcoal cartridge. i x -) ..........................................**........................................ CAUTION A dose-rate greater than 2.5 R/hr on the face of the drawer for a 10 sec. ; J collection is indicative of a situation much worseIn than suchthat'which a case, leave was the calculated for PNPS in a " worse case" scenario. drawer alone, report this information to the T.S.C., shut the PASS down per Section D, and report back to the 0.S.C. while this information-is being evaluated.
- 31. With the C&RP member helping, remove the drawer from the sampling station and place it on the floor.
....***......** ....** .***.................**n****...*******.******************....
CAUTION L I Other than at the front, there is no shielding on the drawer. Stay as far away from it as possible while handling. f3 5.7.4.1.11-12 Rev. 5
-( /
L 32. Loosen the. black kn'ob on the front of the drawer. p L,.p. 33.. Using 'a;long-handled grappling tool or:other such implement, l- ; t, f remove the particulate / cartridge holder from the drawer, and; i
~~
quickly.tran'sfer it through the access door to the counting room, i placing it on the floor. l 3 4.. Push the grapple into the room toward the counting room entranc'e
" so that.it can be used by someone entering from the lab to retrieve the samples.
- 35. Close the access door on the PASS side of the wall.
- 36. Place the e g spare particulate / cartridge holder in the drawer. j
'37. ' Tighten the black knob to secure the. holder.
- 38. Replace the drawer in the sample station.
- 39. Tighten the T-handle jacking screw to lock the drawer in place.
- 40. Verification of proper drawer positioning is obtained by lighting of green light, " CART'G IN", on the control panel near the HC-712 selector switch. If light does not come on:
- a. ; Loosen-T-handle jacking screw.
- b. Pull drawer out a little way.
- c. Re-insert drawer.
- d. Tighten.T-handle jacking screw.
D. Return System to Normal
'l. Perform a drain of the Trap, Sump, and Collector'per Section VIII.B.9 of this procedure. l
-1
- 2. Ensure that'all switches on PASS Control Panel, C-228, are in the l UP and 0FF position.
- 3. Turn off the main power switch and remove the key.
- 4. Close the demineralized water tank by closing valves FO-11 and F0-12.
- 5. Secure the Piping Station Chiller by turning Power switch to 0FF.
- 6. Close the nitrogen supply valve on the top of the nitrogen tank.
l
- 7. Close and lock the sample station ventilation air control inlet and outlet dampers. ,
i q
- 8. Notify the Control Room to close the valves on the applicable RHR Loop and the valves on.the sample return line to the torus (opened i in Step V.C).
Notify the Watch Engineer that the procedure has been completed. O-9. 5.7.4.1.11-13 Rev. 5 1 . . . , . . , j
j i
, . ,t S ,.,
- .( J6 '10.- Egress the~' sample' station by.way.of the machine shop.
i, 1 111[ Reportiback to the 0.S.C. for further instructions. IX y ! A_TTACHMcNTS' < .
- A.: .Instfument Checklist (Surveillance Ch'ecklist).
l -: B. . Data Sheet. L l
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r , > ATTACHMENT A p;' , J Data Sheet Record The Data Pertinant To This Procedure
.:].
D. mR/hr. D
'1. -Area Radiation Monitor, RI-507
- 2. Orifice Size L/ Min.
- 3. -Timed: Sample Yes or No H
- a. Timer Setting KC-712 Sec.
- 4. Circulate; gas (not thru cartridge)
- a. . Sample Flow FI-725 SCFH(I)
- b. Gas Sample Temp. TI-724 "F
- c. Gas Sample Press. PI-726 PSIG/in. Hg
- d. E-703' Inlet Pressure (Gas Sample, Cooler) PI-727 PSIG/in. Hg.
- e. Cartridge Radiation Monitor RI-704 mR/hr.
S. Actual Sample (critical flow thru
' cartridge) h a. Gas Samp1'e Press. during Sampling PI-726 _ PSIG/in. Hg-PSIG/in. Hg
- b. E-703 Inlet Press, during Sampling PI-727
- c. Sample Time
- 6. Dose Rate on. Particulate / Cartridge Drawer mR/hr.
- 7. Instrument and Serial #
Remarks: ! (1)' Corr. Flow (SCFH) - Flow (Roto) P(psia) + 14.7 530 FI-725 X 14,7 460 + T (*F)
.]- SIGNED DATE S.7.4.1.11A-1 Rev. 5
= = - . . . .
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< BOSTON EDISON l
NUCLEAR OPERATIONS DEPARTMENT , PILGRIM NUCLEAR POWER ~ STATION Procedure No. 5.7.4.1.12 POST-ACCIDENT SAMPLING SYSTEM 14m1 GAS SAMPLE FROM DRYWELL i List of Effective Pages 5.7.4.1.12 5.7.4.1.12-2 5.7.4.1 12-3
; g 5.7.4.1.12-4 Q 5.7.4.1.12-5 5.7.4.1.12-6 5.7.'4.1.12-7
'5.7.4.1.12-8 5.7.4.1.12-9 5.7.4.1.12-10 5.7.4.1.12 Attachments 5.7.4.1.12A-1 5.7.4.1.12B-1 5.7.4.1.128-2 Approved .
N lear Op,erations Manager Date V/# 0 ff Safety Evaluation: %;"'rd/Not Required 5.7.4.1.12-1 Rev. 5 ____-- --=--_-_-----------__---- - - - - - - - - - - - - __ _ _ _ - - - _ _ _ _ _ _ - - - - 1
vm d' ['j{ I. PURPOSE: The rirpose of this procedure is to provide instructions for the collection
/% and transport of a Drywell Gas Sample during accident conditions, d surveillance testing, and training.
II. DISCUSSION This procedure includes information on methods and precautions pertaining to the operation of the post accident sample panel in regard to the collection and transport of a 14ml Drywell Gas .:mple. III. APPARATUS i A. Gas vial case B. Gas vial (s) C. High Range Radiation monitor D. Keys for PASS Main Power Switch (CR-E or CR-F) and for Chem. Lab. .f access door (CR-182 or CRA-20) E. Needlea (25 and 18 Gauge) F. Key for-Ventilation Control Dampers (# Hi-Hi Rad. Key) IV. REFERENCE MATERIAL A. PNPS P&ID M-239 Post Accident Sampling and H 2 /02 Analyzer System. B. 'PNPS Procedure'No. 5.7.4.1. C. PNPS Procedure No'. 2.2.132 (PASS Isolation Valve Operation). D. General Electric Post Accident Sample Station Operating Manual, NEDC-24889. V. PREREQUISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and remaining exposures of the personnel involved in obtaining or analyzing samples, discuss stay times, discuss a plan of action in the event of a spill or break, discuss the method of communications, review all the procedures that are used, and discuss the equipment needed to perform the procedures. L O
- ..s 5.7.4.1.12-2 Rev. 5 l
c_____:_______________. _-_
_7 7t' a i 4 + B .' Hatch Engineer notified prior. to initiating' this procedure. Obtain
,a permission to open sample station air control outlet damper (Secondary
*- Containment Penetration) to establish ventilation flow path from the D,,, , sample station to the Reactor Building.
HQlE As per. Memo NED 84-990, the Post-Accident
' Sampling System can be tested seoi-annually and during training periods without_the system ventilation damper being open.
C. Request'the Control Room to open the following valves as per Operating Procedure Number 2.2.132: s
- 1. PASS Liquid Return Line to Torus
- a. SV-5065-71 and 72 for Loop A, or b.. SV-5065-77 and 78 for Loop B.
- 2. PASS Sample Line from applicable2 H2/0 ' train in service (A or B)..
- a. SV-5065-67 and 68 for Train A and SV-5065-24A, 26A,~33A and
-37A
.0
- b. SV-56 5-81 and 82 for Train B and SV-5065-13B, 20B, 24A, and 26A
- c. SV-5065-73 and 74 (Torus Gas Return-Loop 'A') or SV-5065-75 and 76 (Torus Gas Return-Loop 'B')
HQIf Each of the PASS Isolation Valves Control Circuits has a logic system which will
" Trip" the valves closed upon receipt of a primary containment isolation signal.
The operator must override this logic, via a key, in order to operate the'above valves. In addition, the H2 /02 isolations will require an override. f D. Request Operations to provide system pressure reading for the Make-Up l Demin. Water System. j l; 5.7.4.1.12-3 Rev. 5 w x ___:__ _ _ -
u, . mm r
;EL ! Fill out Attachment B to' ensure :there is sufficient instrumentation:to.
~
X j
;"fi e
' perform this. procedure (For Surveillance Tests Only). Fill out Attachment A as indicated in the procedure..
p w
- F. Direct access door to Rad. Chem. Lab.-should be unlocked and ready to-open.
4,M 4 G. . PASS _ operator.shall be accompanied by C&RP Tech.Lto'monit'or' U'# I
' radiological conditions.-- * *
, VI .3 < PRECAUTIONS:
$e A. .The indicator for the area radiation detector RI-507'is on:the PASS '
Control Panel:C-228. 'Its reading should be continually monitored upon initial entry to the sample. station and during the sampling' process.-
'Bi If during the sampling leakage or a malfunction' occurs request thel Control Room to close the appropriate isolation valves. Leave the area
'if dose rates are prohibitive.
- The operator'should position himself at the front of Panel C-228 C.
whenever possible maintaining a maximum distance from the sample G' collection station'.at all times. *[ < D. The drain and blow-out s'equence will_;take precedence over any other operation and therefore may be performed at;any time.__ Failure to do sol may result in damage tofan air pump.- Sample: stationLalarms and: lights 4" will indicate.when draining is required The sample station operation- dq :.t
; in progress will be stopped immediately by turning the sump drain .
system switch HC-715 from 0FF to any other position.. A WhenswitchHC-715-1isreturnedto0FF,thesamplestatio'nd511'returni to the operation previously interrupted, uniess other switches % ret
,O 'I .., "s changed;in the meantime. ;
-4
'. E. The PASS Area Radiation Monitor is set to alarm at the following' set 6 points: Alert: '450 mr/hr.- sN' 900 mr/hr. High: { F. 'If the PASS Area Radiation Monitor High Alarm alarms, immediately 'j notify the RETC for further instructions. 1 VII. LIMITATIONS ' l Radiological A. The' sample station enc'osure shielding is based on Reg. Guide 1.3 . , source terms predicted I hour post-LOCA. The earliest a sample s:re.y bc l I u, collected is one (1) hour after an LOCA. i V d 1 O i i 5.7.4.1.12-4 Re'v. 5 l l i L _. a
y ,fp 7 m g).- O : p m j. i' yi
- Containment or: Torus Atmosphere Samples
- x Cc ' *
, ~
-The. design' pressure of the. atmosphere sample circulating pump is 40
@ s < W 4;~' % jpdg.c The containment or-torus cannot be sampled above 40'psig.
1 r /ij 3 'd ' f. y"bligHater s .
- C. Co n ,
Cooling water must be available to E-604 and E-605 prior to purging and af , collecting a liquid sample above 150*F.
. DEg.m Heat .m Tracing >
. Ndat' tracing exterior to the sample panel must be. energized for a minimum of eight (8) hours prior tol:011ecting an atmospheric sample.
T HDlf U Applies if system was not in s;andby s-condition i v. E.. Panel' Operation-
.. To extend the life of the components in the. atmosphere sampling section.
'of the panel, th'y exposure to high temperature samples, i.e., normi
{4}' - simple temperatt res under accident conditions, should be limited to the
'ektent'practica during surveillance and training operations.
i F. PASSDHSk Ensure Make-Up'Demin. Water System pressure is <140. psi prior to utilizing this pressure to operate the PASS DHST. VIII. PROCEEBE j 'A. Chiller Ooeration. ,
- 1. Piping Station Chiller '
- a. ^
Normal (1) Verify cooling water supply and return line valves for i, E-604 and E-605 are open. (2) Verify the control panel for the PASS chiller is ) energized by ensuring that the Heater "0N" indicating i lamp is ILLUMINATED on the control panel. L (3) Position Chiller Pump Control Switch to "0N," Process 1 Pump "0N," and Power "0N" on the Chiller Control Panel. 5.7.4.1.12-5 Rev. 5 s j i lJL k 4o
- .% . a _
_ s _&
.b. Abnormal (1) If the compressor fails, samples may be cooled using
/_; water from the fire main.
(/ (2) Attach a 1-1/2 inch hose to the machine shop south wall fire main header. (3) Attach the other.end of the fire hose to the hose connection located just outside the cooling unit on the
. coolant. discharge line. !
(4) Close the chiller. supply isolation valve. 1 (5) Close the chiller return isolation valve. (6) Open the fire water supply valve. (7) Remove the pipe cap and open the chiller drain valve to allow fire water to drain to the floor. CAUTION ~ If the chiller unit supply and return isolation valves are not closed befoie - water from the fire main is turned on, damage to the chiller unit could occur.
.%.h
'(8)' Open supply valve at machine shop south wall fire main header.
- 2. Sample Cabinet Chiller
- a. Check level of Chiller as displayed on level indicator. Fill as necessary using'the Chiller make-up demin, water inlet valves.
B. Drainina the Trao. Sumo and Collector The following is in preparation for the drain and blow-out sequence which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling lines, is too high.
- 1. Ensure that all control panel switches are in the Up and Off position. Then insert the control panel key into the control panel main power switch and select either A or B.
I 1 O.' 5.7.4.1.12-6 Rev. 5
7 .
+ y , . , -
'\ >
. 2. Observethearearadiationmonittpr-{RI-50)onthecontrolpanel' C-228'and record its readings.
p
?~ -' 3. . The following step should be performed Aiilh during an actuhl-
-emergency and not during training or surveillance testing (Ref.
~
.VA): :1-
- a. - Open the sample' station air control inlet damper,' located on
'the upper right side of the L gas sample cabinet. Unlock' i (using Hi-Hi rad. key)'and open sample station air: control outlet. damper. ' Observe a positive air flow on Meter PI-728.
.This flow ensures adequate: ventilation:of the sample cabinet.
4.- Fill:the demineralized' water tank (V-501):-
- a. When'Make-Up Demin. Water System is-in service.
(1)' Ensure FO-14', Isolate Nitrogen to Tank Valve is CLOSED.
'(2) Open water overflow valve EQL1 and release the' air pressure.
(3) Slowly open valve EQll to the demineralized water supply.
-(4) Observe overflow from discharge tube; close F0-13.
(5) Open the nitrogen supply tank.
~
-(6) Open PCV-505. downstream of the nitrogen regulator.
G
'kJ (7) Adjust regulator to 100 psi.
CAUTION Do not' exceed 140-psi on the Demin. Tank as indicated on V-501.
- b. When Make-Up Demin. Hater System is not in service.
(D Open water overflow valve FO-13 and release the air pressure. (2) Observe sight glass for water level. O 5.7.4.1.12-7 Rev. 5
~-
9; salt L
] , If: insufficient water level exists,.
(," 3r ' demineralized water must be added to the tank from another source. n
-(3). Close Valve-F0-13.
-(4) Open the nitrogen supply tank.
(5) Open PCV-505, downstream of the nitrogen regulator. (6) Back-off the regulator.to the nitrogen supply and open
-the nitrogen supply valve (F0-14) on the top of the tank; adjust regulator.to 100 psig.
RQlE Demin. Tank level must be monitored since supply valve will be closed.
- 5. Open demineralized water. flush line from storage-tank, F0-12.
V 6. Check the water tank (V-501) pressure gauge and ensure pressure is approximately 100 psig.
- 7. Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627.
EQlE For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus muit be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will L
force liquid into the liquid sample loop. This can be verified by:
- a. Turning HC-626 to Position 5 (RHR on by-pass).
- b. Turn Flush System Switch HC-628-1 counterclockwise to Position 6.
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This
{} starts demineralized water flowing through CV-626 and FCV-627. l 5.7.4.1.12-8 Rev. 5
)
i
- d. Observe that approximately 1 gpm flow is indicated on FI-664 (thus providing a positive indication that the discharge line to the torus is open).
- 9. After being assured that the discharge line to the torus is open, drain the Collector Tank V-71!.. Trap T-717 and the sump by turning switch HC-715-1 clockwise thru its eight positions. Pause 4 approximately 5 seconds at each position. As ,oon as the switch is turned to Position 2, the liquid selection status light and Flush System Hode light adjheent to HC-628-1 will turn off and valves CV-628 and CV-626 will close.
- 10. After. the drain and blow-out cycle is completed and switch HC-715-1 is again in the OFF position, the flush with demineralized water will automatically resume. Stop the flush operation by turning HC-700 to the "0FF" position. ,
- 11. Turn HC-626-1 .to the UP and 0FF position.
- 12. Turn Flush System Switch HC-628-1 clockwise to the UP and 0FF I position. l C. Obtain Samole
- 1. Place Liquid / Gas Selector HC-700 in the " GAS" position.
- 2. Verify the gas filter drawer is in place. Verify green light labeled " CART'G IN" on the control panel at the left of HC-712 m Selector Switch is on. If not reposition the gas filter drawer.
~~)
- 3. Flush system with gas to be sampled, select source as follows:
- a. Turn the Gas Sample Selector HC-723 to Position 1.
- b. Place a standard 14 milliliter off-gas vial into the gas vial ,
positioner. (A light coating of silicone grease will aid the , needle penetration.) Slide the positioner into the gas port i on that portion of the sample station and turn it to lock in place. Observe that the bottle status light changes from red to green, j
- c. Turn the 14 HL Gas Sample Switch HC-705 to Position 2 and
" CIRCULATE GAS" for a period of 12 minutes, j lWlE Sample purge times differ for Loop A and Loop B due to piping configuration:
- 1. Loop A purge time is 12 minutes. l
- 2. Loop B purge time is 6 minutes.
~N If dose rates are prohibitive, Loop (d B should be considered for sampling {
1 requirements. 5.7.4.1.12-9 Rev. 5 l
d.. Verify that the-flow as read by the rotometer (FI-725) through the sample enclosure window is in the expected range of 20 to 30 SCFH. Record. flow and flush duration on the DATA SHEET. l]
- 4. Turn HC-705 to Position 3 and " EVACUATE" the off-gas vial; Record the pressure of the' evacuated vial (PI-708) on the DATA SHEET.
- 9. Make sure the vacupr in the. gas vial reaches a stable minimum reading, as indicated byfa. pressure drop at PI-708.
- 5. Take Gas Sample s
- a. Turn HC-705 to Position 4 "TAKE SAMPLE" 1***********************************************************************************
CAUTION Observe the pressure reading on PI-708; a change would indicate a system leak. If this happens, abort sampling, turn HC-705 to Position 5 (Flush System). Maintain this position'until the Radiation Monitor (RI-704)~ indicates a safe level. Turn HC-723 to the SPARE position. Remove vial positioner and inspect for faulty vial cap or needle. Use special T-han'dle tool to remove faulty needles. After corrective action is taken, re-insert
. positioner with vial. _. 0bserve that the bottle status light changes from red to, green. Repeat Steps VIII.C.3.c through 5.
6.*******************************************er-************************************* OV b. Press button HC-720 " PRESS FOR SAMPLE" and hold'until a. steady pressure.is indicated on PI-708 (approximately 5 seconds.
- c. Record the sample pressure and temperature of PI-708 and TI-724 respectively on the Data Sheet.
HQlE This pressure will correspond to the actual sample pressure,
- d. Record time the sample was taken. l i
- 6. Flush System j
- i
- a. Turn HC-705 to Position 5 " FLUSH SYSTEM" and flush for !
l approximately 1 minute or until the area radiation monitor I (RI-507) located on the sample station reaches a minimum.
- b. Turn HC-705 clockwise to Position 6,7, and 8 then straight up m to "0FF" 5.7.4.1.12-10 Rev. 5 l l
l l l
17 .-- Position gas vial cask to facilitate quick insertion of-sample.
- 8. Turn'to unlock and withdraw gas vial positioner. Slowly remove
. (~1 positioner and have C&RP Technician.take a radiation survey.
V . Place the gas vial into the vial;casc with the positioner and have. C&RP. Tech. survey vial in the case. Record readings for future 3 use. D. TRANSPORT SAMPLE
- 1. Open lab access door.
- 2. Use the vial carrying device and other means as required _to transport the sample to the. direct access doorway.
3.- Pass the sample through the lab access doorway into the counting
, room - do NOT go into the counting room from PASS.
- 4. Secure access door on the PASS side of the wall.
E. Return System to Normal-
- 1. Perform a drain of the trap, sump, and collector per Section !
VIII.B.9 of this procedure. 2.. Ensure that all switches on PASS Control Panel, C-228, are in the a UP and 0FF position.
- 3. Turn off the' main power switch and' remove the' key.
- 4. Close the nitrogen supply valve on the top of the nitrogen-tank.
- 5. Turn off Piping Station Chiller by turning POWER to 0FF.
- 6. Close and lock'the sample station ventilation air control dampers.
- 7. Request the Control Room to close the valves on the Drywell Gas Sample lines and.the valves on the sample return line to the torus (opened in Step V.B).
- 8. Notify the Hatch Engineer that the procedure has been completed.
- 9. Egress the sample stations by way of the Machine Shop.
- 10. Report back to the 0.S.C. to review data collected.
IX. ATTACHMENTS A. Data Sheet i B. Instrument Checklist 1 I I Loa 5.7.4.1.12-11 Rev. 5 [ ; l Li- _-- - - - - - - _ _ l
p,' e
,,1 h *' > T l
b ATTACHMENT A-k Data' Sheet Record The Data Pertinent To This Procedure i
- 1. Area Radiation Monitor RI-507 mR/hr.
- i. 2. Gas. Sample Flow FI-725- SCFH(l)
- - 3.- Sample Purge Time _ -Min.
.'4.. Evacuated Vial Pressure: PI-708- PSIG/in.Hg ,
~
- 5. Sample Gas Pressure' 'PI-708 PSIG/in.Hg t
TI-724
- 6. Gas' Sample Temp.
Gas Sample Pressure PI-726
*F
-PSIG/in. Hg
]
E-703 Inlet' Pressure PI-727 PSIG/in.Hg (Gas Sample ~ Cooler) O. '7. Sample Time
- 8. Dose Rate on Vial Uns'hielded- mR/hr.
- 9. Dose Rate on Vial Shielded mR/hr.
- 10. Instrument and Serial # l Remarks:
(I) Corr. Flow (SCFH) - Flow (Roto) x P(psig) + 14.7 530 FI-725 14.7 460 + T(*F) i f l-a' - SIGNED DATE 5.7.4.1.12A-1 Rev. 5 i l _ _ _ _ _ . _ ___ __ ____ _ __ _____J
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,' '90STON EDISON L l(~y NUCLEAR OPERATIONS. DEPARTMENT.
PILGRIM NUCLEAR POWER STATION Procedure No. 5.7.4;1.13 POST-ACCIDENT SAMPLING SYSTEM-
.14m1 GAS' SAMPLE FROM TORUS' List of Effective Pages -
- 5.7.4.1.13-1
.5.7.4.1.13-2
.5.7.4.1.13-3 5.7.4.1.13-4~
-5.7.4.1.13-5 5.7.4.1.13-6 5.7.4.1.13-7' L(]=5.7.4.1.13-8 5.7.4.1.13-9'
.S'.7.4.1.13-10 5.7.4.1.13 5.7.4.1'.13-12 Attachments 5.7.4.1.13A-1 5.7.4.'1.13B-1 5.7.4.1.13B-2 Approved Ylear Op Vations Manager Date f f~7 7/.
Safety Evaluation: 4irquirM /Not Required 5.7.4.1.13-1 Rev. 8
'I., PURPOSE
- 1. The'purt 3se of this procedure is to provide instructions 'for the. collection.
and trancoort of a Torus Gas Sample during accident conditions, surveillance testing, and training. II. DISCUSSION: This procedure includes information on methods and precautions pertaining to the operation of the post accident sample panel in regard to the collection and transport of a 14m1 Torus Gas Sample.
. III'. APPARATUS A. Gas. vial case ,
.. l B. Gas vial (s) l C. High Range Radiation monitor D. Keys for PASS Main Power Switch (CR-E or CR-F) and'for Chem. Lab. I access door (CR-182 or CRA-20)
E .- Needles (25 and 18 Gauge) F. Key for Vent?'ation Control Dampers (# Hi-Hi Rad. Key) IV. REFERENCE MATERIAL h A. PNPS P&ID H-239 Post Accident Sampling and H 2 /02 Analyzer System. B.- PNPS Procedure No. 5.7.4.1. C. PNPS Procedure No. 2.2.132 (PASS Isolation Valve Operation). D. General Electric Post Accident Sample Station Operating Manual, NEDC-24889. V. PRERE0VISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and remaining exposures of the personnel involved in obtaining or ar,alyzing samples, discuss stay times, discuss a plan of action in the event of a spill or break, discuss the method of communications, review all the- , procedures that are used, and discuss the equipment needed to perform the procedures. B. Hatch Engineer notified prior to initiating this procedure. Obtain l permission to open sample station air control outlet damper (Secondary l
- r. Containment Penetration) to establish ventilation flow path from the '
l sample station to the Reactor Building. L lO 5.7.4.1.13-2 Rev. 8 L 1.u. __ .__
M O As per Memo NED 84-990, the Post-Accident Sampling System can be tested semi-annually and during training periods without the system ventilation damper being open. C.- Request the Control Room to open the following valves as per Operating Procedure Number 2.2.132: l
- 1. PASS Liquid Return Line to Torus
- a. SV-5065-71 and 72 for Loop A, or
! b. SV-5065-77 and 78 for Loop B.
- 2. PASS Sample Line from applicable2 H /02 train in service (A or B).
- a. SV-5065-69 and 70 for Train A and SV-5065-11A, 18A, 258, and 27B
- b. SV-5065-79 and 80 for Train B and SV-5065-158, 22B, 25B, and 27B
- c. SV-5065 75 and 76 (Torus Gas Return)
Each of the PASS I'olation Valves Control Circuits has a logic system which will
" Trip" the valves closed upon receipt of a primary containment isolation signal. The operator must override this logic, via a key, in order to operate the above valves. In addition, the H2/02 isolations will require an override.
D. Request Operations to provide system pressure reading for the Make-Up Demin. Hater System. E. Fill out Attachment B to ensure there is sufficient instrumentation to perform this procedure (For Surveillance Tests Only). O 5.7.4.1.13-3 Rev. 8
l F. Direct access door to Rad. Chem. Lab. should be unlocked and ready to p open. i .. l G.- PASS operator shall be accompanied by C&RP Tech. to monitor [d~') . radiological conditions.
'. VI . PRECAUTIONS A; The' indicator for the area radiation detector RI-507 is on the' PASS Control Panel C-228. Its reading should be continually monitored upon initial entry to the sample station and during the sampling process.
B .' If during the. sampling leakage or a malfunction occurs request the Control Room.to close the appropriate isolation valves. Leave the area
'if dose. rates are prohibitive.
.C. The operator sh'ould position himself at the front of Panel C-228 whenever possible maintaining a maximum distance from the sample collection station at all times.
D.. The drain' and blow-out sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so may result in damage to an air pump. . Sample station alarms and lights will indicate when draining is required The sample station operation in progress will be stopped immediately by. turning the sump drain system switch HC-715-1 from 0FF to any other position. When switch HC-715-1 is returned to 0FF, the sample station will return to the operation'previously interrupted, unless other switches were
;] changed in the meantime.
E. The PASS Area Radiation Monitor is set to alarm at the following set Alert: 450 mR/hr. High: 900 mR/hr. F. If the PASS Area Radiation Monitor High Alarm alarms, immediately notify the RETC for further instructions. 1 VII. LIMITATIONS i A. Radiological
~ The sample station enclosure shielding is based on Reg. Guide 1.3 source terms. predicted I hour post-LOCA. The earliest a sample may be collected is one (1) hour after an LOCA.
B. Containment or Torus Atmosphere Samples 1 The design pressure of the atmosphere sample circulating pump is 40 psig. The containment or torus cannot be sampled above 40 psig. O 5.7.4.1.13-4 Rev. 8 l i
~. + ~ ___ _ _ _ - - _ _ _ _ _ _ _ - _ _ _ - - _ - _ _ _ _
; X
; C.- Cooling Hater-
. . . . Cooling water must:be available to E-604 and E-605 prior _to purging and O i, collecting.a liquid sample above 150*F.
A.j ; D. . .HeatTracingf I Heat . tracing exterior to .the sample panel must be' energized for a. minimum of eight (8) hours prior to collecting an atmospheric sample. ( l EQlE Applies _if system wa's:not in standby condition E. Panel Operation To extend the. life'of the components in the. atmosphere sampling section.
- of the panel,'the exposure to high temperature samples,ii.e... normal; sample temperatures under accident conditions, should be limited to the
- extent practical during. surveillance.and training operations.
- F. PASS DHST Ensure Make-Up Demin. Water System pressure is <140 psi prior to
-utilizing.this pressure.to operate the PASS DWST.
]'VIII~. PROCEDURE A. Chil'1'er Ooeration-
- 1. Piping. Station Chiller a .= Normal (1) Verify cooling water supply and return line valves for E-604 and E-605 are open.
- (2) Verify the control panel for the PASS chiller is i energized by ensuring that the Heater "0N" indicating lamp is ILLUMINATED on the control panel.
(3) Position Chiller Pump Control Switch to "0N," Process Pump "0N," and Power "0N" on the Chiller Control Panel, q- ! i i
'5.7.4.1.13-5 Rev. 8 c _ _ __ _- _ _ _ _ _ _ _ - _ _ - - _ _ _ _ _ _ _ - _ _ _ _ _ _
i..
-b.. Abnor' mal
.. '(1)- If-the compressor fails, samples may be cooled using j water.from the fire main.
l l (2)-. Attach a 1-1/2 inch hose to the machine' shop south wall f l fire main' header, i i (3)- Attach the other.end of the fire hose to the hose . connection located just outside the cooling unit on the ,
-coolant discharge line. [
(4) Close the~ chiller-supply-isolation valve. .j (5) Close the chiller return isolation valve. (6) Open_the fire water. supply valve. (7) Remove the pipe cap and open the chiller drain valve to allow fire water to drain to the floor. l CAUTION. If the chiller unit supply and. return isolation valves are not closed before water from the fire main-is turned on . damage to the chiller unit could occur, a******************************************************************************
~
(8) .0 pen supply valve at machine shop south wall fire main _ header.
- 2. Sample Cabinet Chiller o
- a. Check level of Chiller as displayed on level indicator. Fill as necessary using the Chiller make-up demin, water inlet valves.
B. .Drainina the Tran. Sumo and Collector The following is in preparation for the drain and blow-out sequence which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling-lines, is too high.
- 1. Insure that all control panel switches are in the Up and Off position. Then insert the control panel key into the control panel main power switch and select either A or B.
- 2. Observe the area radiation monitor (RI-507) on the control panel C-228 and record its readings. .
0 1 5.7.4.1.13-6 Rev. 8
h' The following step should be performed only during an actua: 3. )
' emergency and not during training or surveillance testing (Ref.
.VA):
q
- a. .Open the sample' station air control inlet damper, located on the upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad. key) and open sample station air control' i outlet damper. Observe a positive air flow on Meter PI-728.
This flow ensures adequate ventilation of the sample cabinet. L 4. Fill the demineralized water tank-(V-501):
- a. When Make-Up Demin. Hater System is in service.
(1) Ensure F0-14. Isolate Nitrogen to Tank Valve is' CLOSED. (2) Open water overflow valve EQ11 and release the air pressure. (3) Slowly open valve E0ll to the demineralized water supply. (4). Observe overflow from discharge tube; close FO-13. (5) Open the nitrogen supply tank. (6) Open PCV-505 downstream of the nitrogen regulator. (7) Adjust regulator to 100 psi. []...**...******...**......**********...****...***********....***.....******** CAUTION: Do not exceed 140 psi on the Demin. Tank as indicated on V-501.
- b. When Make-Up Demin. Water System is not in service.
(1) Open water overflow valve F0-13 and release the air j pressure. j (2) Observe sight glass for water level. j i I
)
1 l 5.7.4.1.13-7 Rev. 8 l l l
r 1 ,
, :i '
y v:s-c .
" f" If insufficient water level exists, demineralized water must be added to the
< tank;from another source.
i
'(3) 'Close Valve'F0-13..
- (4) Open the altrogen supply tank.-
'(5)- Open PCV-505,. downstream of the' nitrogen. regulator'.
1 (6) Back-off the regulator to.the nitrogen supplyLand open the nitrogen 'upply s valve (F0-14) on the top of the. tank; adjust regulator.to-100;psig. m
.Demin'. Tank level must be monitored since supply' valve will be closed.=
- 5. ' Open' demineralized water flush.line from storage tank, F0-12.
- 6. Check the water tank (V-501) pressure gauge and ensure pressure is-at approximately.100.psig.. .
- 7. - Adjust PCV-627 to obtain 15 psi on gauge' adjacent to PCV-627.
ROIE For FCV-627 to be open,,a minimum of 3 psi on.the gauge adjacent to PCV-627 is required.
- 8. The discharge.line to the torus muit be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will i force liquid into the li~ quid sample loop. This.can be verified by:
- a. Turning HC-626 to' Position 5 (RHR on by-pass).
7 1 l-i (;Ol ; 5.7.4.1.13-8 Rev. 8 , i
- b. Turn Flush System Switch HC-628-1 counterclockwise to Position 6.
[1 t
- c. Turn Liquid / Gas Selector Switch (HC-700) to Liquid. This starts demineralized water flowing _through CV-626 and FCV-627.
- d. Observe.that approximately I gpm flow is' indicated on FI-664'
-(thus providing a positive indication that the discharge line to the torus is open).
9.. After being assured that the discharge line to the torus' is open,. drain the Collector Tank V-715, Trap T-717 and the: sump by turning: switch HC-715-1 clockwise thru its cight positions. Pause approximately 5 seconds at each position. As soon as the switch is turned to Position 2, the liquid selection status. light and
' Flush System Mode light adjacent to HC-628-1 will turn off and valves CV-628 and CV-626 will close.
- 10. After the drain and blow-out cycle is completed and switch
.9C-7i5-1 is again in the 0FF position, the flush with
. demineralized water will automatically resume. Stop the flush operation'by turning HC-700 to the "0FF" position.
- 11. Turn HC-626-1 to the UP and 0FF position.
- 12. Turn Flush System Switch HC-628-1 clockwise to the UP and 0FF position. 1 7 C. Obtain Samole
^') .
(
- l. Place Liquid / Gas Selector HC-700 in the " GAS" position.
- 2. . Verify the gas filter drawer is in place. Verify green light {
labeled " CART'G IN" on the control panel at the left of HC-712 Selector Switch is on. If not reposition the gas filter drawer. 3.- Flush system with gas to be sampled, select source as follows: ' , t
- a. Turn the Gas Sample Selector HC-723 to Position 2.
- b. Place a standard 14 milliliter off-gas vial into the gas vial ;
positioner. (A light coating of silicone grease will aid the needle penetration.) Slide the positioner into the gas port on that portion of the-sample station and turn it to lock in , place. Observe that the bottle status light changes from red ! to green.
- c. Turn the 14 HL Gas Sample Switch HC-705 to Position 2 and
" CIRCULATE GAS" for at least 12 minutes. l O
5.7.4.1.13-9 Rev. 8 i l
RQlE j Sample purge times differ for Loop A and Loop B due to piping configuration.
- 1. Loop A purge time is 12 minutes
- 2. Loop B purge time is 6 minutes If dose rates are prohibitive, Loop B should be_ considered for sampling requirements.
- d. Verify that the flow as read by the rotometer (FI-725) through the sample enclosure window is in the expected range of 20 to 30 SCFH. Record flow and flush duration on the DATA SHEET.
- 4. Turn HC-705 to Position 3 and " EVACUATE" the off-gas vial. Record the pressure of the evacuated vial (PI-708) on the DATA SHEET.
Make sure the vacuum in the gas vial reaches a stable minimum reading, as indicated by a pressure drop at PI-708.
- 5. Take Gas Sample
- a. Turn HC-705 to Position 4 "TAKE SAMPLE" i *****************....**.....***......*******..********. ...********************
(~'1 Q, CAUTION Observe the pressure reading on PI-708; a change would indicate a system leak. If this happens, abort sampling, turn HC-705 to Position 5 (Flush System). Maintain this position until the Radiation Monitor (RI-704) indicates a safe level. Turn HC-723 to the SPARE position. Remove vial positioner and inspect for faulty vial cap or needle. Use special T-handle tool to remove faulty needles. After corrective action is taken, re-insert positioner with vial. Observe that the bottle status light changes from red to green. Repeat Steps VIII.C.3.c through 5.
- b. Press button HC-720 " PRESS FOR SAMPLE" and hold until a steady pressure is indicated on PI-708 (approximately 5 seconds.
- c. Record the sample pressure and temperature of PI-708 and TI-724 respectively on the Data Sheet.
n V 5.7.4.1.13-10 Rev. 8 i
E0lf E) This pressure will correspond to the actual sample pressure.
- d. Record the time the sample was taken.
- 6. Flush System
- a. Turn HC-705 to Position 5 " FLUSH SYSTEM" and flush for approximately 1 minute or until the area radiation monitor (RI-507) 'lotated on the sample station reaches a minimum. j
- b. Turn HC-705 clockwise to Position 6,7, and 8 and then straight up to "0FF"
- 7. Position gas vial cask to facilitate quick insertion of sample.
- 8. Turn to unlock and withdraw gas vial positioner. Slowly remove positioner and have C&RP Technician take a radiation survey.
Place the gas vial into the vial case with the positioner and have C&RP Tech. survey vial in the case. Record readings for future use. D. TRANSPORT SAMPLE C 1. Open lab access door. !
- 2. Use the vial carrying device and other means as required to I transport the sample to the direct access doorway. )
- 3. Pass the sample through the lab access doorway into the counting room - do NOT go into the counting room from PASS. l
- 4. Secure access door on the PASS side of the wall. ;
E. Return System to Normal ! J
- 1. Perform a drain of the trap, sump, and collector per Section VIII.B.9 of this procedure. )
)
- 2. Ensure that all switches on PASS Control Panel, C-228, are in the 1' UP and 0FF position.
- 3. Turn off the main power switch and remove the key.
- 4. Close the nitrogen supply valve on the top of the nitrogen tank. ;
1 I l i l (~') v 5.7.4.1.13-11 Rev. 8 l l j
e 5 .' - Close and lock the sample station-ventilation air contro.1 dampers. p,
- 6. Turn off Piping Station Chiller by turning Power switch to 0FF.
n . S' M 7.-
~
Request-the Contro1 Room to close the valves on the Torus Gas Sample. lines and-the valves on the sample return line to the, torus-
"(opened in Step V.B).
- 8. Notify the Hatch Engineer that the procedure has been completed.
- 9. Egress.the sample station by way of the Machine Shop.
'10. Report back.to the 0.S.C. to review data collected.
IX. ' ATTACLMMIS A. - Data Sheet B. . Instrument Checklist i 0; i i i i l i 1
- 1 O ,
5.7.4.1.13-12 Rev 8 1 i
ATTACHMENT A ; Data Sheet Record The Data. Pertinent To This Procedure
- 1. Area Radiation Monitor RI-507 mR/hr. 1
- 2. ' Gas Sample Flow FI-725 SCFHCl)
- 3. Sample Purge Time Hin. j
.' 4 . Evacuated Vial Pressure PI-708 PSIG/in.Hg )
- 5. Sample Gas Pressure PI-708 PSIG/in.Hg
- 6. Gas Sample Temperature TI-724 'F Gas Sample Pressure PI-726 PSIG/in.Hg E-703 Inlet Pressure PI-727 PSIG/in.Hg (Gas Sampler Cooler)
- 7. Sample Time
- 8. Dose Rate on Vial Unshielded mR/hr.
- 9. Dose Rate on Vial Shielded mR/hr.
- 10. Instrument and Serial #
Remarks:
\ /
(l) Corr. Flow (SCFH) - Flow (Roto) x P(osia) + 14.7 530 F1-725 14.7 460 + T(*F) SIGNED DATE
,em, I.
5.7.4.1.13A-1 Rev. 8
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r i. BOSTON EDISON NUCLEAR OPERATIONS DEPARTMENT PILGRIM NUCLEAR POWER STATION ProcedureN'o. 5.7.4'.1.14 POST ACCIDENT SAMPLING SYSTEM
.14m1 GAS SAMPLE FROM RX BUILDING List of Effective Paces 5.7.4.1.14-1 5.7.4.1.14-2 5.7.4.1;14-3
. A 5.7.4.1.14-4 V 5.7.4.1.14-5 5.7.4.1.14 l5.7.4.1.14-7 5.7.4.1.14-8 5.7.4.1.14-9
, 5.7.4.1.14-10 5.7.4.1.14-11 Attachments 5.7.4.1.14A-1 5.7.4.1.14B-1 5.7.4.1.14B-2 I
Approved l.- clear 0 erations Manager Date V/ / N
// /
Safety Evaluation: W /Not Required
.]
5.7.4.1.14-1 Rev. 5
)
l L
cc , 4 I.- : PURPUSE-
. The purpose of.this, procedure is to provide instructions for.the collection
' Of and transport of;a Rx Building Gas Sample during accident conditions, l
, , surveillance testing, and training.
'II. ' DISCUSSION L This' procedure' includes information on methods and precautions pertaining to i the operation of the post accident sample panel in regard' to the collection l and transport of a 14m1 Rx' Bldg. Gas Sample.
'III. -APPARATUS-A. Gas vial case B. Gas vial (s)
! C. .High Range Radiation monitor D. Keys!for. PASS Main Power Switch (CR-E or CR-F) and for Chem. Lab. access door (CR-182 or CRA-20) E. Needles (25 and 18 Gauge) F. Key for Ventilation Control Dampers (# Hi-Hi Rad. Key) IV. REFERENCE MATERIAL O A. eNeS euD s-239 eest ucident Sarpung and ag0 2Anaiyzer System. B. PNPS Procedure No. 5.7.4.1. C. PNPS Procedure No. 2.2.132 (PASS Isolation Valve Operation). D. General. Electric Post Accident Sample Station Operating Manual. NEOC-24889. V .' PREREQUISITES A. A pre-job briefing shall take place with all personnel involved in performing this procedure. The purpose of this briefing is to perform all the prerequisites possible at this point, discuss dose rates and remaining exposures of the personnel involved in obtaining or analyzing samples, discuss stay times, discuss a plan of action in the event of a i spill or break, discuss the method of communications, review all the i procedures that are used, and discuss the equipment needed to perform 1 the precedures. { B. Hatch Engineer notified prior to initiating this procedure. Obtain permission to open sample station air control outlet damper (Secondary i Containment Penetration) to establish ventilation flow path from the 1 sample station to the Reactor Building. [ LO l 5.7.4.1.14-2 Rev. 5 l _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ l
i ; s q V \ , h 10lf j As per Memo NED'84-990, the Post-Accident
- Sampling System can Le tested semi-annually ]
and during training periods without the ' l system ventilation damper being open. C. Request the Control Room to open the following valves-as per Operating Procedure Number 2.2.132: 1.- .PAEG Liquid Return Line to Torus
- a. SV-5065-71 and 72 for Loop A, or
]
- b. SV-5065-77 and 78 for Loop B.
D. Request Operations to provide system pressure reading for the'ndke-up demineralized water system. E. Fill out Attachment B to ensure there is sufficient instrumentation t'o perform this procedure (For Surveillance Tests Only). Fill out Attachment ~A as indicated in procedure. F. Direct access door to Rad. Chem. Lab. should be unlocked and ready.to 0 oPea. G. PASS operator shall be accompanied by'C&RP Tech. to monitor radiological conditions. VI. PRECAUTIONS A. The indicator for the area radiation detector RI-50' is on the PASS Control Panel C-228. Its reading should be continually monitored upon initial entry to the sample station and during-the sampling process. B. If during the sampling leakage or a malfunction occurs request the ! Control Room to close the appropriate isolation valves. Leave the area if dose rates are prohibitive. C. The operator should position himself at the front of Panel C-228 whenever possible maintaining a maximum distance from the sample colleciion station at all times. D. The drain and blow-cut sequence will take precedence over any other operation and therefore may be performed at any time. Failure to do so may result in damage to an air pump. Sample station alarms and lights will indicate when draining is required The sample station operation in progress will be stopped immediately by turning the sump drain system switch HC-715-1 from 0FF to any other position. When switch
& HC-715-1 is returned to 0FF, the sample station will return to the 4 operation previously interrupted, unless other switches were changed in the meantime.
5.7.4.1.14-3 Rev. 5 l ____._._z______.___ _ . . _ _ _ _ _ _ _ __
I ; < a
;gfi E. The PASS Area Radiation Monitor is set to: alarm at the following set points: ' ' . ,.3 Alert: 450 mR/hr.
(). High:' 900 mR/hr.
': F. If the PASS-Area Radiation Monitor High Alarm alarms, immediately
^ notify the RE1C for further instructions.
p VII. . LIMITATIONS A. Radiological The sample. station enclosure shielding is based on Reg. Guide 1.3 source terms predicted I hour post-LOCA. The earliest a sample may be collected is one (1) hour after ar> LOCA. B. Containment or Torus Atmosphere Samples
' The. design pressure of the atmosphere sample circulating pump is 40-psig. Tho containment or torus cannot be sampled above 40 psig.
% y3 L' I C. Cooling-Hater Cooling water must be available to E-604 and E-605 prior to purging and y collecting a liquid sample above 150*F. D. Heat Tracing g Heat tracing exterior to the sample panel must be energized for a (y minimda of eight (8) hours prior to collecting an atmospheric sample. HDlE Applies if system was not in standby conditior; y E. Panel Operation To extend the life of the components in the atmosphere sampling section of the panel, the exposure to high temperature samples, i.e., normal sample temperatures under accident conditions, should be limited to the extent practical during surveillance and training operations. F. PASS DHST Ensure make-up demin. water system pressure is <140 psi prior to utilizing this pressure to operate the PASS DHST. 1 i 5.7.4.1.14-4 Rev. 5 - 4
VIII. ERQCEDUkE A. Chiller Ooeration
- 1. Piping Station Chiller
- a. Normal
- 1. Ver fy cooling water supply and return line valves for E-604 and E-605 are open.
- 2. Verify the control panel for the PASS chiller is energized by ensuring that the Heater "0N" indicating lamp is ILLUMINATED on the control panel.
- 3. Position Chiller Pump control Switch to "0N," Process Pump "0N," and Power "0N" on the Chiller Control Panel,
- b. Abnormal
- 1. If the compressor fails, samples may be cooled using water from the fire main.
- 2. Attach a 1-1/2 inch hose to the machine shop south wall fire main header.
- 3. Attach the other end of the fire hose to the hose connection located just outside the cooling unit on the
,, coolant discharge line.
\'~') Close the chiller supply isolation valve.
4.
- 5. Close the chiller return isolation valve.
- 6. Open the fire water supply valve.
- 7. Remove the pipe cap and open the chiller drain valve to allow fire water to drain to the floor.
CAUTION If the chiller unit supply and return isola-tion valves are not closed before water from the fire main is turned on, damage to the chiller unit could occur.
....................****....................... ****..**................... 2.......
B. Open supply valve at machine shop south wall fire main header. 5.7.4.1.14-5 Rev. 5 l
1 p
- 2. Sample Cabinet Chiller
., a. Check Ir. vel of Chiller as displayed on level indicator. Fill l )' as necessary using the Chiller make-up water inlet valves.
B. Drainina the Trao. Sumo and Collerint The'following is in preparation for the drain and blow-out sequence which must be performed routinely before and after each sample is taken, and, whenever the level in Trap T-717, which removes water from gas sampling lines, is too high.
- 1. Ensure that all control panel switches'are in the Up and Off position. Then insert the control panel key into the control panel main power switch and select either A or B.
2.- -Observe the area radiation monitor (RI-507) on the control panel C-228 and record its readings.
- 3. The following step should be performed only during an actual emergency and not during training or surveillance _ testing (Ref.
VA):
- a. Open the sample station air control inlet damper, located.on the upper right side of the gas sample cabinet. Unlock (using Hi-Hi rad. key) ano open sample station air control outlet damper. Observe a positive air flow on Meter PI-728.
This flow ensures adequate ventilation of the sample cabinet h 4. Fill the demineralized water tank (V-501): When Make-Up Demin. Water System is in service. a. (1) Ensure F0-14, Isolate Nitrogen to Tank Valve is CLOSED. (2) Open water overflow valve Tall and release the air pressure. (3) Slowly open valve E0ll to the demineralized water supply. (4) Observe overflow from discharge tube; close FO-13. (5) Open the nitrogen supply tank. l (6) Open PCV-505 downstream of the nitrogen regulator. (7) Adjust regulator to 100 psi.
.....................**. *******.**.... ************************** ..****a.. *******
CAUTION Do nat exceed 140 psi on the Demin. Tank as indicated on V-501. O*- 5.7.4.1.14-6 Rev. 5
l l b. When Hake-Up Demin. Hater System is not in service. (1) Open water overflow valve FO-13 and release air pressure. [) (2) Observe sight glass for water level. , M If insufficient water level exists, demineralized water must be added to the tank from another source. (3) Close Valve FO-13. (4) Open the nitrogen supply tank. (5) Open PCV-505, downstream of the nitrogen regulator. (6) Back-off the regulator to the nitrogen supply and open the nitrogen supply valve (FO-14) on the top of the . tank; adjust regulator to 100 psig. n () M Demin. Tank level must be monitored since , supply valve will be closed. -1
- 5. Open demineralized water flush line from storage tank, '0-12..
- 6. Check the water tank (V-501) pressure gauge and ensure pressure is approximately 100 psig.
- 7. Adjust PCV-627 to obtain 15 psi on gauge adjacent to PCV-627.
HQlE For FCV-627 to be open, a minimum of 3 psi on the gauge adjacent to PCV-627 is required.
- 8. The discharge line to the torus muit be open; otherwise, the 100 psi nitrogen used for discharging the collector tank (V-715) will Q force liquid into the liquid sample loop. This can be vrrified by: "
v 5.7.4.1.14-7 Rev. 5 i i
' ~
l S a. Turning HC-626 to Position 5 (RHR on by-pass). t-
- p. b. Turn Flush System Switch HC-628-1 counterclockwise to Position 6.
l L)- ' c.. Turn Liquid / Gas Selector' Switch (HC-700)' to Liquid. This starts demineralized water flowing through CV-626 and FCV-627. l
- d. Observe that approximately 1 gpm' flow is indicated on FI-664 (thus providing a positive indication that the discharge line to the torus is open).- ' "
- 9. . 'After being assureo that the discharge'line to the torus.is-open, drain the Collecter Tank V-715, Trap T-717 and the sump by turning' switch HC-715-1 clockwise thru its eight positions. Pause approximately 5 seconds at each position. As soon as the switch 1
.is turned to Position 2, the liquid selection status light and- ,
Flush System Mode light adjacent to HC-628-1 will turn off and { valves td-628 und CV-626 will : lose. I
- 10. After the drain'and blow-out cycle is completed and switch HC-715-1 is again in the OFF position, the flush with .
demineralized water will automatically resume'. Stop the flush 5 operation by turning HC-700 to the "0FF" position. '
- 11. Turn HC-626-l'te the UP and 0FF position.
- 12. Turn Flush System Switch HC-628-1 clockwise to the UP and 0FF q position.-
U ! C. Obtain Samnie 1, Place Liquid / Gas Selector HC-700 in the " GAS" position.
- 2. Verify the gas filter drawer is in place. Verify green light labeled " CART'G IN" on the control panel at the left of HC-712 Selector Switch is on. If not reposition the gas filter drawer.
- 3. Flush system with gas to be sampled, select source as follows:
- a. Turn the Gas Sample Selector HC-723 to Position 3.
.b. Place a standard 14 milliliter off-gas vial into the gas vial positioner. (A light coating of silicone grease will aid the i needle penetration.) Slide the positioner into the gas port {
on that portion of the sample station and turn it to lock'in i place. Observe that the bottle status light changes from red { to green,
- c. Turn the 14 ML Gas Sample Switch HC-705 to Position 2 and
" CIRCULATE GAS" for at least 12 minutes.
1 1 1 5.7.4.1.14-8 Rev. 5 l
L f L L V l V, - li0lf Sample purge times differ for Loop A and Loop B, due to piping configuration.
- 1. Loop A purge time is 12 minutes
- 2. Loop B purge time is 6 minutes If dose rates are prohibitive, Loop B should be considered for sampling
' requirements.
- d. Verify that the flow as read by the rotometer (FI-725) through the sample enclosure window is in the expected range of 20 to 30 SCFH. Record flow and flush duration on the DATA SHEET.
- 4. ' Turn HC-705 to Position 3 and " EVACUATE" the off-gas vial. Record the pressure of the evacuated vial (PI-708) on Oe DATA SHEET.
Make sure the vacuum in the gas vial reaches a stable minimum ') reading, as indicated by a pressure drop at PI-708.
- 5. Take Gas Sample g
CJ a. Turn HC-705 to Position 4 "TAKE SAMPLE" o**...****.....********** ...********** ........**.<.*****.*************.************ CAUTION Observe the pressure reading on PI-708; a change I would indicate a system leak. If this happens, abort sampling, turn HC-705 to Position 5 (Flush System). Maintain this position until the Radiation Monitor (RI-704) indicates a safe level. l Turn HC-723 to the SPARE position. Remove vial j positioner and inspect for faulty vial cap or '
. needle. Use special T-handle tool to remove j faulty needles. After corrective action is taken. l re-insert positioner with vial. Observe that the bottle status light changes from red to green.
Repeat Steps VIII.C.3.c through 5.
.......****c.;......e*****........********* .....****.....**....***...............**
l
- b. Press button HC-720 " PRESS FOR SAMPLE" and hold until a !
l steady pressure is indicated on PI-708 (approximately j l 5 seconds. ex lU 5.7.4.1.14-9 Rev. 5 i
- c. Record the sample pressure and temperature of PI-708 and TI-724 respectively on the Data Sheet. .
fh 4,.d EDIE This pressure will. correspond to the y actual sample pressure. d.- Record time the sample was taken. 6.- Flush System
- a. Turn HC-705 to Position 5 '" FLUSH SYSTEM" and flush' for-approximately 1 minute or until the area radiation monitor (RI-507) located on the sample station reaches a minimum.
- b. . Turn HC-705 clockwise to Position 6,7, and 8 then straight up to "0FF"
- 7. Position gas ' vial cask to facilitate quick insertion of sample.
- 8. Turn to unlock and withdraw gas vial-positioner. Slowly remove positioner and have C&RP Technician take a radiation survey.
Place ~the gas ~ vial into the vial case with the positioner and have j h C&RP Tech. survey vial in the. case. Record readings for future U' use. 1 D. TRANSPORT SAMELE
- 1. Open lab access (oor. -
- 2. Use the vial carrying device and other means as required to J transport the sample to the direct access doorway. )
- 3. Pass the sample through the lab access doorway into the counting !
room - do NOT go into the counting room from PASS. ]
- 4. Secure access door on the PASS side of the wall.
E. Return System to Normal q l
- 1. Perform a drain of the trap, sump, and collector per Section i VIII.B.9 of this procedure. I
- 2. Ensure that all switches on PASS Control Panel, C-228, are in the !
UP and 0FF position.
- 3. Turn off the main power switch and remove the key.
l 4. Close the nitrogen supply valve on the top of the nitrogen tank. ! O l' i 5.7.4.1.14-10_ Rev. 5 { u___
- 5. Turn off'th'e Piping Station-Ch111er by turning Power switch to 0FF.
- 6. Close and lock the sample station ventilation' air control dampers.
IO. M
- 7. Request the Control. Room to close the valves on the sample return.
l , line to the torus (opened in Step V.B).
- 8. Notify the Hatch Engineer that,the procedure has been comp 1'eted.
- 9. Egress the: sample _ station by way of the Machine Shop.
- 10. Report back to the 0.S.C. to review data collected.
IX. ATTACHMENTS A. -Data Sheet B. ~ Instrument Checklist O ! 4 l I i l O l 5.7.4.1.14-11 Rev. 5 l l 1
, l
i-L s -ATTACHMENT A m k'.) . i Data Sheet Record The Data Pertinent To This Proct 'ure
- 1. LArea Radiation Monitor RI-507 mR/hr.
'l2... Gas Sample Flow 'FI-725 SCFH(I)
- 3. Sample Purge Time. Min.
- 4. Evacuated. Vial Pressure PI-708 PSIG/in'.Hg
- 5. Sample Gas Pressure PI-708 PSIG/in.Hg
- 6. Gas' Sample Temperature TI-724 'F Gas Sample Pressure PI-726 --- PSIG/in.Hg E-703 Inlet. Pressure PI-727 PSIG/in.Hg
'(Gas Sampler Cooler)
- 7. .Samp1e. Time
- 8. Dose Rate on Vial Unshielded mR/hr.
- 9. Dose Rate on Vial Shielded mR/hr.
-10. Instrument and Serial # .l 1
Remarks:
-i 4
(I) Corr. Flow (SCFH) - Flow go g x P(osia) + 14.7 14.7 530 460 + T (*F)
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