ML20204H533

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Rev 6 to Procedure OI-29, Waste Polishing Demineralizer Resin Flush & Recharge T108A & (T108B)
ML20204H533
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 11/18/1983
From:
WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20204H448 List:
References
OI-29, NUDOCS 8411120312
Download: ML20204H533 (6)


Text

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Date 01-29 OPS Supervisor MINOR

(_ Chem Lab Records- Revision 6 Updated 11-18-83 OPS Office Records Updated t

WASTE POLISHING DEMINERALIZER RESIN FLUSH & RECHARGE T108A (T108B) j- 1.0 PURPOSE 1.1 To sluice the spent resin out of the polishing demineralizer T108A or B.

1.2 To recharge the demineralizer with fresh resin.

2.0 PRECAUTIONS & LIMITATIONS 2.1 Have Health Physics monitor the de'mineralizer (contact and general area) prior to start of sluice. It should ready very low, however, if it is reading high, monitor El. 26' & El. 8' level after completion of the sluice.

2.2 Resin storage tank T112 relief valve is set at 150 psig. Monitor the

( cask continuously during flushing operation. Do not exceed 125 psig on resin storage tank pressure gauge.

2.3 Line up monitor tank pump to reactor makeup water header, throttle pump recire valve to maintain 100 psig on the reactor makeup water header. (PI-1069 through 1072 are only 0-100 psig) 2.4 If resin storage tank T112 pressure increases to 100 psig and holds, back flushing of the resin retention element on the vent line may be required.

3.0 INITIAL CONDITIONS 3.1 Verify the following:

3.1.1 Verify the storage tank resin inlet and storage tank vent camlock connections are properly mated and securely wired into place.

3.1.2 Camlock female cap installed on the resin storage tank T112

, rinse line (center penetration) with padlock installed.

3.1.3 Resin storage tank T112 discharge valve shut (WS-34) and 4

padlock installed.

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3.2 Perform the following valve lineup: Position Initials WL-1827 Polishing demin filter vent ... *S WL-1828 Polishing demin filter drain . . S WL-1830 Polishing demin filter outlet .. S WL-1826 Polishing demin filter inlet .. O WL-1809 (1810) "A"("B") polishing demin inlet . . S WL-1815 (1916) "A"("B") polishing demin resin fill S WL-1813 (1814) "A"("B") polishing demin vent . . S WL-1811 (1812) "A"("B") polishing demin outlet . S WL-1811A (1812A) "A"("B") polishing demin outlet (filter bypassed) ... .... S WL-1680 Spent resin to storage tank ... O WL-1681 RMW to storage tank vent connection S WL-1697 Storage tank vent to WHUT .... O WL-1682 SA to storage tank resin inlet connection . . .... . .... S WL-1823 (1824) RMW to T108A (T108B) outlet ... S WD-1825 RMW to resin flush line . ... . S

WL-1817 Ion exchanger alternate inlet .. S _

WL-1818 Ion exchanger alternate inlet .. S WL-1821 (1822) "A"("B") series operation / flushing isolation ........... S

( 1CV-390A RMW to ion exchanger . . . . . . . 0 1CV-390B RMW to ion exchanger . . . . . . . O WL-1841 Polishing demin series operation /

flushing root isolation .... 0

, Record demineralizer to be flushed 3.3 Health Physics perform a survey of ion exchanger to be dumped to get initial readings.

Contact General Area 3.3.1 Permission to sluice resin to storage tank obtained from radioactive waste e.>ordinator who was advised of the above contact reading.

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Initials 3.4 If the resin being dumped is routed to the resin storage tank via the south dump header, a contact reading of the north header should be taken in the overhead of the north passageway before dumping. After dumping, an increased contact reading at this same location is indicative that

. the north header also needs flushing due to resin carrying on past resin storage tank.

If dumping via north header, take contact reading on south header as explained above.

Opposite dump header contact readings:

Before dumping After dumping ,_

4.0 PROCEDURE 4.1 Pressurize the reactor makeup water header (reference Step 2.3).

4.2 Open WL-1819 (1820) condensate polishing demineralizer

[ resin dump line valve.

CAUTION: AT THIS POINT THE RESIN IS FREE TO FALL BY GRAVITY TOWARDS THE RESIN CASK. THE RADIATION LEVEL SHOULD BE LOW, BUT CHECK IT.

4.3 open valve 1821 (1822), reactor makeup water to polishing condensate domineralizer bed inlet line slowly to a flow rate of about 7-15 gpm. Monitor storage tank pressure while flushing. Do not exceed 125 psig at resin storage tank.

CAUTION: THE RESIN RETENTION ELEHENT ON THE VENT LINE IS LOCATED AT THE TOP OF THE RESIN STORAGE TANK PROVIDINC A HININUH AIR SPACE. USE CAUTION WHILE FLUSHING WITH HIGH FLOW RATES TO PREVENT OVERPRESSURIZATION AND LIFTING THE TANK INTERNAL RELIEF VALVE.

4.4 Vary the flow rate as required because of radiation levels.

4.5 When the demineralizer is empty, shut 1821 (1822), reactor makeup water to demineralizer, and 1819 (1820), resin dump valve. Then lock resin dump valve 1819 (1820).

Lock #

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Initials I 4.6 Flush spent resin line (do not exceed 125 psig on resin storage tank).

4.6.1 Open WL-1840 and WD-1825 to flush. Shut WL-1840; shut and lock WD-1825.

Lock #

4.6.2 In primary domineralizer valve gallery (NW),

open 1CV-372 to flush. Shut and lock 1cV-372.

Lock n 4.6.3 At 1U12C, south evaporator feed demineralizer, open BS-1167A to flush. Shut and lock BS-1167A.

Lock #

4.7 Survey all resin dump lines for radiation; if there is any present, flush as necessary.

4.8 Perform the following valve lineup:

WL-1680 Spent resin to storage tank ... S WL-1697 Storage tank vent to WHUT . .. . 0 1CV-390A RMW to the domineralizers ... . S ICV-3908 RMW to the domineralizers . .. . S WL-1841 RMW flushing root isolation .. . S WL-1830 Polishing domin filter outlet . . 0 4.9 Obtain required resin volume and lot number from Chemistry laboratory.

Volume ft3 Lot #

Chem. Supvr.

4.10 Recharge the domineralizer in the following manner.

Do steps in order indicated.

4.10.1 Shut WL-1830, polishing domineralizer filter outlet.

> 4.10.2 Open WL-1811 (WL-1812) "A" ("B") domineralizer service outlet.

NOTE: PERFORM STEPS 4.10.3 & 4.10.4 WHEN HEALTH PHYSICS IS PRESENT TO TAKE A GRAB SAMPLE AND LOW VOLUME AIR PARTICUI.4TE.

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i Initials

, 4.10.3 open WL-1813 (WL-1814) "A" ("B") domineralizer l

vent (hose to floor drain).

4.10.4 Open WL-1827 to drain domineralizer (hose to floor drain).

  • l 4.10.5 After 2-3 minutes, open then reclose the selected
domineralizer resin fill valve WL-1815 (WL-1816)
ngu (ngn),

l f 4.10.6 Remove resin fill connection flange and bolt recharge funnel into place.

4.10.7 open WL-1815 (WL-1816) "A" ("B") demineralizer

[ resin fill. Use domineralized water and begin recharging domineralizer.

l l CAUTION: INSURE ALL PERS000fEL INVOLVED IN RECHARGING OPERATIONS HAVE POCKETS TAPED, GLASSES SECURED, ETC.

i l 4.10.8 After sluicing approximately two-thirds of the l

[ required resin into the domineralizer, shut j

WL-1827.

4.10.9 Sluice the remaining resin into the domineralizer

- and then shut WL-1813 (WL-1814) "A" ("B"),

domineralizer vent.

4.10.10 Fill the balance of the domineraliser tank volume from El. 46' until until water is visable just above the resin fill valve.

4.10.11 Shut WL-1815 (WL-1816) "A" ("B"), domineralizer resin fill.

l 4.10.12 Remove the recharge funnel and reinsta.". the blank flange utilizing a new flexitallic

gasket.

l 4.10.13 Align the domineralizer per instructions of l the Duty Shift Superintendent.

i 4.11 Place the reactor makeup water supply to the condition j required by the Duty Shift Superintendent.

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