ML19309E974

Ecopac Sys Procedure for Onsite Solification of Low Level Radioactive Waste at Sequoyah Nuclear Plant & Addl Info Re Process Control Program

ML19309E974
Person / Time
Site:	Sequoyah
Issue date:	01/31/1980
From:	ANEFCO, INC.
To:
Shared Package
ML19309E971	List: ML19309E970 ML19309E974
References
PROC-800131-01, NUDOCS 8004280235
Download: ML19309E974 (26)

Text

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h ENCLOSURE 2

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ANEFCO INC. ECOPAC SYSTEM PROCEDURE FOR ON-SITE SOLIDIFICATION OF LOW-:;EVEL RADIOACTIVE WASTE AT SEQUOYAH NUCLEAR PLANT CONTRACT 80P68-1619S7 ANEFCO CODE B-123 This Procedure describes general operation of the ECOPAC system and the necessary interfacing with Sequoyah Nucipar plapt systems.

" COURTESY COPY" '

1/31/80 Rev.

0

/

9004280 7 2-%5

3.4 wipe tests (i.e. smearable loose contamination) will be performed prior to work and at the finish of the job to establish that this area is within the linits as prescribed by the applicable regulation.

3.5 waste transfer piping and hose will be blown free when transfer is completed to prevent subsequent plug'ging, contamination buildup within the lines, and to reduce area background radiation levels.

3.6 All ECOPAC co.inecting hoses will be disconnected and stored when operations are completed.

1 OPERATIONAL PROCEDURE (Utilize 4.0 thru 4.8 for both Resin and Boric Acid solidification) 4.0 Position cask with empty disposable liner inside auxiliary building access bay alongside the ANEFCO ECOPAC solidification system.

4.1 Attach ECOPAC loading arm to the liner 2" male dry-break connector.

Verify that the ultra-sonig level detector fits properly into liner port and seal OPW quick disconnpct.

Connect the loading arm acid line to the liner 1/q!l male dry-4.2 break connector; Connect the dowatering system hose to the pCOPAC gyptem air 4.3 compressor outlet.

Connect two air hoses from plant seryicp Dir to the ECOPAC 4.4 system.

4.5 Connect both electrical supplies to ECOPAC system.

(110 VAC, 60 hz; 220 VAC 3 phase, 60 hz).

Couple U-F tank to the 1 1/2" Sandpiper pump using 4' double 4.6 l

OPW female quick-disconnect hose.

e Couple U-P Sandpiper pump to ECOPAC system using 25' double 4.7 OPW female quick-disconnect hose.

Attach air supply from ECOPAC system outlet to the U-F 4.8 Sandpiper pump.

RESIN. SOLIDIFICATION 5.0 Slide hose containment over resin-transfer hose prior to attaching hose to SNP discharge fitting FCV-77-226.

5.0.1 Tape hose containnent to hose, add (3) three absorbant pads into the containment, then tape and seal the containment to SMP pipe (re Fcc to drawing SNP-1).

5.1 Connect the SMP resin outlet hose to the catch tank top inlet quick-disconnect and contain per drawing SNP-1.

5.2 Conr ect the resin catch tank discharge pump outlet (Moyno) to the ECOPAC system utilizing the 25' female quick disconnect flanged hose and contain per drawing SNP-1.

5.3 Connect the resin catch tank well point to the dewatering pump and contain per drauing SNP-1.

5.4 Attach dewatering pump discharge hose to SNP valve FCV-77-227.

5.5 AMEFCO will indicate when 1 complete batch of resin can be pumped by SNP to the catch tank.

5.6 SNP should flush / clear resin' hose prior to step 5,7 to lower the dose rate as low as reasonably achievable.

Supply 110 vac to the dewatering pump and dewater resin through 5.7 Mater recovered by dewatering system from SNP valve FGT-77-227 catch tank will be pumped to SNP receiving line.

5.8 Supply 220 vac, 3 phase 60 hz. to resin forwarding Moyno pump from ECOPAC system.

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lo 5.9 Connect air sparge hose from ECOPAC system to resin catch tank and sparge for a minimum of 30 minutes prior to transfer for solidification.

5.10 ANEFCO personnel to solidify the dewatered resin according to the ANEFCO ECOPAC process control plan.

When resin solidification is completed, disconnect the SNP ' resin outlet hose to the catch tank top inlet and contain per drawing SUP-1.

Store hose in assigned location.

5.11 Disconnect the catch tank discharge pump (Moyno) outlet hose to the ECOPAC system and contain per drawing SNP-1.

Store hose in proper location.

5.12 Disconnect loading arm waste dry-break connector, acid dry-break connector, and ultra-sonic level detector.

Contain opening with safety drip bags.

5.13 Health Physics Technician will monitor radiation levels and condition of solidified waste in the liners, 5.14 Seal full liners.

Paint one liner cap'with temporary sealed cap for indentification at burial site for subsequent inspection.

Seal other liner caps with lock-cement (permanent).

5.15 Seal cask cover.

BORIC ACID / EVAPORATOR BOTTOMS (Liquid Wastes) 6.0 Slide hose containment over boric acid-transfer hose prior to attaching hose to SNP discharge line number Tape hose containment to hose, add (3) three absorbant pads 6.1 into the containment then tape and seal the containment to SNP pipe (refer. to drawing SNP-1).

i Connect the boric acid transfer hose to the ECOPAC syster 6.2

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waste inlet and contain per drawing SNP-1.

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s

e ANEFCO will notify SNP when ECOPAC system is ready to receive 6.3

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liquid wastes.

6.4 SNP to open valve FCV-77-226 for transfer of waste to ECOPAC sy s t.c m.

6.5 ANEFCO personnel will solidify the liquid wastes according to the ANEFCO ECOPAC Process Control Program.

ANEFCO will verbally notify SilP upon receipt of one complete 6.6 batch of boric acid so that SNP can terminate pumping waste by closing valve rcV-77-226.

After notifying St1P operator, ANEFCO will flush ECOPAC system 6.7 using SIIP domin water through SNP valve FCV-77-227.

Disconnect the boric acid transfer hose from both the ECOPAC G.8 waste inlet and the SNP discharge line valve FCV-77-226 using the containment method illustrated in drawing St1P-1 Store hoses in proper location.

Disconnect loading arm waste dry-break connector, acid' dry-6.9 Contain break connector, and ultra-sonic level detector.

openings with safety drip bags.

llealth Physics technician will monitor radiation levels.

6.10 6.11 Seal full liners.

Paint one liner cap with temporary seal for identification at the burial site for subsequent inspection.

Seal other liner caps with lock-ccment (permanent).

6.12 Seal cask cover.

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Dato Prepared by:

C h eta i c a 1 Acceptanec J'

,1. 0 A-Set Test and acceptance criteria check and sign when acceptabic.-

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!!yd rom e t e r tout results:

Spccific Gravity.

The acceptance criteria is betwoon the range 700 and 1400 Cps.

If unacceptabic, refer to PCP Section 4.3.3.

1.2 A-Set Ph test results:

Ph.

The acceptance criteria is between 'the range 7.4'and 7.7.

' M-If unacceptable, refer to PCP S e c t i'o n 4.3.3.

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1.3 Acid (Catalyut) Ph test results: _the range and P h..

The acceptance criteria is between If unacceptable, refer to PCP Section 4.3.3.

1.4 Acid Visual Color test results:

signature date 2.0 Verify the solidification of at least one representative test

.uample from at least every tenth batch of each type of wet radioactive waste.

Check one below.and show date and batch 5/

HMRS # of each of up to 10 batches.

Pilter sludg Date Batch #/RMRS#

Batch 8/Rt1RSD 2.1 2.2 Spent Rcsin Date Batch #/RMRSH Batch 8/RHRS# _

2.3 1:vap rator Bo t to:a s Date Batch 4/RMRS#_

Batch #/RMRSN 2.4 Boric Acid Solutionu Date Batch #/RMRSN B a t c h # / Ril,RS 8 2.5 Sodiun Sulfate Solutions D a t e,,,_,,

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BatchW/RMRSS signature date l

3.O Sample Collection Samples" i

hefer to PCP Section 3.2 " Collecting 3.1 Obtain Sample (

1 liter) from valve V-6.

3.2 Obtain sam'ples~f' rom va'1ve V-7'duri'ng multi-transfers.

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3. 3 preparc a composite sample from effuents obtained.in..3.2. ~ ' -- -

Multiple Transfers of waste.

Rcfer to PCP.Section 3.2.4.." Sample,

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. below, 4.1 he c c> r d lab results reauired 4.1.1. I'h of U.i n t e

if s 2 refer to PCP Section 4.1.2 and fill out Section 4.1.1.

4.1.2 sami>1e volume or Type / volume of caustic added 4.1.3 Wauto oil content i f ? l t, refer to PCP Section 4.1.4.

4.1.4 w a n t e / U r r a t io ___...__

4.1.5 Uv/ Acid Ratio _

date signature 5.0 Teut Solidification Prerequisite:

All previous section 1-4 must b.c completed and proper signature atfixed to this forn.

5.1 v.lume of waste (3 400ml) 5.2 volume of U.F.

5.3 volume of Acid 5.4 Total Volume signature date 6.0 Free Standing Water 6.1 Free standing water of sample refer to PCP Section 4.2.7 and 4.2.8 6.2 Volume of decanted water Volume of sample (taken from SQNP-PCP Section 95).

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f free standing water.

6.4 signature date 7.0 Solidification AcceptabillLy Refer to PCP Section 4.3 7.1 6.4 above must be less than 1%.

If 6.4 is greater than it, refet-to PCP Section 4.3.3.

7.2 Visual physical appearance:

Verify that the soli ? '. f l e'd wa s t e will maintain its shape when rcraoved.f rom the. container.

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s ENCLOSURE 3 EXPERIMENTAL SIMULATIONS OF RADIOACTIVE WASTF. AND A-SET RESIN

• FORMULAT.T.ONS '

formulations for the solidification of selected Mx pe r i.non t al simulated wastes with A-Set Rosin has been determined.

based on laboratory trials, attapt t;o Thene.for mulations, a relatively maximum quantity of waste while incorporate Solidified products consist ently producing a solidified product. tested although some difficulties were obtained for all waste typesto solidification agent ratios for were encountered at high wasteThe addition of sufficient acid catalyst sulfate wastes to UF.

to waste-UF mixtures to achieve a pli of 1.5t 0.5 was found to rapid and consiste nt polymerization and also permits produce a more a higher waste to UP ratio for most wastes. Care should bee >

free from foreign matter and cured Mixing equipment must be kept adhesive build-up.

free standing water in simulated wastes solidified with UF was measured and found to vary from zero to 25.4 wt.%.

Adjustment of The the waste to UP mixture pH to 1.5 0.5 by the addition 'of su f ficient reduction in the quantity acid catalyst resulted in a significantfree standing water was found to The of free standing water. that of the water to UF mixture after have a pil approximating iddition of the catalyst.

The polymerization reaction is acid catalyzed and is both ternp.et;atureLow waste to and pH dependent.

A pH temperature decrease the time required for solidification.

the 0.5 in the waste-UF mixture is desirable; however, of 1.St annount of catalyst needed must be determined for each t'/paa mate.

Euch mixtures will begin to gel in several minutes and are generally well soTidified within thirty minutes.

' Dilute solutions of strong the pH of. highly buffered waste-UF acids maybe used to adjustThe use of strong acid solutions must be done with care

mixturcs, to avoid premature gelling of the mixture.

Concentrat ed soduim sulfate wastes-may cause erratic setting in UF.

Additions of less than ten weight percent sodium sulfate or small 1

emounts of calcium chloride are reported to eliminate this problem.

sodium The addition of 2 wt.% calcium chloride to UF containing and Riches, J.W., Waste Solidification-Cement or I

l cacock, H.W.

American. Society of Hechanical Engineers, li Ureaformalden_yde, l

74-WA/NE-9, 1974.

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fourid to increase the permissible waste /A-set Resin sulfate wastes was The addition of sufficient cataly'qt to produce a pH of ratio.0.5 in the waste-UF mixture allows an' increase in the

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waste /UF ratio for most wastes.

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TABLE 1 h

Experimental Program

,Siinulated Waste Types Included in t e n-

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1.

Bead Resin Waste 2.

BWR Precoat Filter Cake Powdered Resin a.

b.

Diatomaccous Earth Forced Recirculation Evaporator Concentrates 3.

a.

BWR Chemical Regenerative Waste b.

PWR Chemical Regenerative Waste c.

Boric Acid Waste d.

Decontamination Waste 4.

Thin Film Evaporator Concentrates BWR Chemical Regenerative Waste a.

b.

PWR Chemical Regenerative Waste c.

Bor.ic Xcid Waste d.

Decontamination Waste 4

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TABLE 2 Simulat ed Waste Formulations 1.' BEAD hESIN WASTE Material Weip t Percent, %_

50.

water 50.

Bead Resin (IRN-150)a 0

70 T Temptrature 7

pH 7a.

BWR PRECOAT FILTER CAKE (WITH POWDERED RESIN)

Weight Percent.

in Filter Cakis, T Material

4. _

a 50, 4

Wa'er Anion Powdered Ecsin (PAO)b 20,

n t

Cation Fowdered Eesin (PCH)b pg,

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4 CnadC Sodium Chloride d

n 70 4 0py; Teznperature 7

? V; pH 4;

2b.

BWR FRI: COAT FILTER CAXE (WITH DIA7W.AfEOUS EARTH).-

Weight Percent in Filter Cake, s Material 50 Water 40.

Diaton.aceous Earth 10.

CrudC 0

70 F Tesnperature 7

pH BWR CHF.MICAL hEGENERATIVE WASTE OF A TORCED RECIRCULATION EVAPOM70R 3a.

Weight Percent in Evaoorator Bottons, t Material 75.

Water 22.9 Sodium Sulfate 2.0 Sodium chloride 0.1 CrudC 170T Ten.perature pH l

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ION EVAPORA1CR Phk Citt>41CA1, REGLUERATJVC WASTE OF A FOHCED RECJECUJAT 1 13.

Weight Percent

,3,_ Evaporator Bottoms d 1n

[!atyr i, al, 73.4 Wa ((* r 14.9 Sodium Sulfate 9.6 h..a.ontura Sul f ate 2.0 Sodium Chloride 0.1 Civde 170*F Trn. pen at ur e 2.5 to 4.0 pH CED Kt_:CIfC,UIAT3ON EVAPOM70R

_l$ORIC_ A_CID J'AS'IT_OP_A FOR 3c.

Weight Percent in INaporator Bottoms, 4

paterial, 87.9 Water 12.0 Foric AcM 0.1 C

0 Ciud 270 T Temperature

• 3.5 pH OR DECONTAMII;ATION WASTE OF A TORCED RECIRCUIATJON_WAPOM'I 3d.

Keight Percent 7: ate rial _

in Evaporator Bottoras, 4-4s: _i

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80.'.

.. g? -

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Water g,9

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4 NUTEK-700 5..

b..

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is Citric Acid 4

0.3, 3 31;-

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C Crud 93

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Hydaaulic Oil No. 2 93 Lubrica,ing Oil No. 20

}70 f 7/

t 0

M Tenperature 5

pH 0R EWR CHEMICA1, REGE! ERAThvE WASTE OF A THIN TIIM EVAPORA1 4a.

Weight Percent t_

_in Evaporator Bottoes, 2:aterial 50.

Water 45.8 Sodium Sulfate 4.0 Sodium Chloride 0,2 0

Crude 150 to 250 r Tenperature' 6

pH s

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PhH CHFJ11 CAL RECENEJtAT3VE WASTE OF A 1H1H FILM EVAPORA1CR 4b.

' Weight Percep$

. In Evaporator Bottosns, 4

~~ Material ~

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-(f 50

?*1 Water 29.

'O Sodium Sulfate 5

Jtzenoniusa Sulfate 16.8 d

sodima Chloride 40 Cmdc o,g 150 to 2500F Tem 1waature 1.c 'o 4.0 pH 4c.

HORIC ACID WASTE OF A 11tIH FILM EVAPORA1VR Weight Percent Material in Evgorator Bottoms,.

50.

Water 49.8 Boric Acid C

0.2 Cmd 0

150 to 250 F Terape rat ure

. 2.5 to 3.5 pH 4d.

DECONTAMIRATION WASTE OF A TH1H FI!>t EVAPORA10R Weight Percent

_Ma t_e r i al

_in Evaporator Lottorns,J 50.

Water d

20.

hTTEK-700 9.8 EDTA Citric Acid 19.

Cnade 0.2 0.5 Hydraulic Oil No. 2 Lubricating Oil No. 20 0.5 0

150 to 250 f T wperature

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pH a Folan ar.d Haas Co., Philadelphia, Pa. 19105 b Ecodyne Corp., Union. N.J. 07083

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C fine air cleaner test dust s.o. 1543094, N~

Motors Corp., Flint, Nhhlgan 48556 coipound for the dissolution of calciuo sulfats;scelgj Nuclear Tec3,tology a

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Corp., Amston, Conn. 062n

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TABLE 4 e

Forraulations for the Soldification of BWR and PWR Wastes Using 25 Vt.Z Sodium. Bisulfate (Anhydrous)

A-Set Resin.

i Ajueous _Cata11st Solution Added_to 2.0 Volucie 1 of the Waste-UF Mixture c

i 1

Veight F.atio Approximate Coments Vaste to A Set Solidification Time W st e Type, e

1.

Ersd Resin 2.2 15 minutes V,3 W:

s i.

2.

BWR Precoat 3.'

i Filter Cake a

a.

Tovdered Resin 2.0 35 minutes a

b.

Diatocaceous Earth 2.0 30 minutes U

3.

Forced Reefeculation Evaporator Concentrates a.

BWR Jimulcal 1.2

'25 minutes Ec;,enerat ive Vaste b.

PVR Chemical 1.2 20 minutes Regenerative Vaste c.

Eoric Acid Vaste 1.0 15 minutes d.

Decontamination Waste 1.1 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> 4.

Thin Film Evaporator Concentrates a.

INR Chemical 1.0 30 erinutes 1.2 30 minutes 2 ut.% CaC12 added Regencr ative t.'aste b.

FWR Che.cical 0.7 30 minutes 1.5 30 minutes 2 ut.% CaC12 added Regenerative Vaste 30 minutes 1.0 1

c.

Eoric Acid Waste d.

Decontamination vaste 1.5 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> i.'

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Aqurous Catalyst Solution Added to Achievey H = 1.$to.5 in the Vaste-UF Hixture Aipioxir. ate Volume I Weight Ratio l

L'p s t e_ Type V.e st e t o UF Solidification Time 1:aHSO4 Solution Added 1.

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b.

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Technich,1 Service R port t

Data and Discussion:

Tabics 1 through 3 as described below show the raw data obtained in these catalyst ' studies of A-Set Resi{ 2 as well their conversion to a curvilinear fit in graphing.

au Table 1:

pil Measurements by mis, of Catalyst for 200 ml. Slurrics of IJater/CASCO-RESIN 2 Table 2:

700 and 90 F. Cel Times by pit of Water / A-Set.W. sin 2 Slurries Catalyzed with 25% Sodium Bisulfate and 900F. Cel Times by pH of' Water /A-Set Resin 2 Slurries Tabic 3:

70 Catalyzed with 3N Sulfuric Acid Figures 1 through 3 attached are graphical portrayals of Tables 1 through 3 and need no further description.

(

e e

e

)

g 9

e 9

I

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g 3

=,..w e -

m

Technical Service Report pil !!casurenents by mis, of Catalyst for Table 1:

200 ml. Slurries of Water /A-Set Besin 2 e

Y

, X Hl. of 25% wt.

0 Estimated pH Sodiu:n Bisidfate

-p!! of Sierry 0 70 F.,

y,.

2.4 2,4 s

2 17

~

1.7 9

4 1,5 1.5 6

l'.4 1.4 8

13 l

1.3 10 Shown in Figure 1.

Equation for curvilinear fit of raw data.

Y - 1.02522 + (.0415589X)

Index of Determination a.99724 Y

X pH of Slurry 0 70 F.

Estimated pH 111. of 3N 11,S04 2.7 2.7 1

1*9 1.9 2

1.6 1.6 3

1.5 1.4 4

1.3

1. 4' 6

1.2 10

l. 2-Shown in Figure 1.

Equation' for curvilinear fit of raw data.

Y - 1.05443 + (1.64827/X)

Index of Determination =.99304 S

3 e

e 6

l j.

s

-,t Y.

M, '.

d O

e 8

e

Technical Service Report Tabic 2.

700 and 90 F. Cel Times by pl! of 'yater/A-Set Rosin 2 Slurries Catalyzed with 25% Sodium' Bisulfate

~

Y X

Slurry hit 0 70 F.

Usitig 25% wt.

Gel Time 0 70 F.

Estimated 0

Cel Time G 70 F.

Sodium Eisulfate Solutio _n (mins.)

2.4 19 19.4 11 93 1.7 5.7 1.5 5

1.4 4

5.0 1.3 4

a.5 Shown in Figure J.,.

Equation. for curvilinear fit of rav data.

Y = -15.2101 + (14.4304X)' Index of Determinat%9n ".97226 r,,

X Y

Slurry pli G 70 F.

Using 25% wt.

Gel Time 0 90 F.

Estimated 0

0 j

Sodium Bisulfate Solution (mins.)

Cel Time 9_90 F.

s 16 15.3 2.4 6.8 5

1.7 3.8 1.5

,3 3.2 1.4

,4 3

1.9 1.3 Shown in Figure 2.

Equation for curvilinear fit of raw data.

Y = -13.8506 + (12.1519X)

Index of Determination =.94999 6

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