ML20079K323

Rev 7 to TR/IRTS-5, Operational Safety Requirements

ML20079K323
Person / Time
Site:	West Valley Demonstration Project
Issue date:	10/11/1991
From:	WEST VALLEY NUCLEAR SERVICES CO., INC.
To:
Shared Package
ML20079K320	List: ML20079K319 ML20079K323
References
REF-PROJ-M-32 TR-IRTS-5, NUDOCS 9110210264
Download: ML20079K323 (8)

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TR/IRTS 5

' Rev. 7

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RECORD OF REVISION

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PROCEDURE.

If there are changes to the procedure, the revision number increases by one.

These. changes are indicated in the left margin of the body by an arrow (>) at- .

the beginning of the paragraph that contains a change.

Example:

> The arrow in the margin indicates a change.

Revision'On

'Rev, No. Description of Changes Page(s) Dated 0 Original Issue All 1 Dated 5/20/88 All-1 Engineering Release N/A 08/88 2 Per ECN No. 2607 6-2607A All 09/88

() 3 Per ECN No, 2845 All 02/89 4 Per ECN No. 2978 All 06/89 5 Per ECN No. 3174 1-3 11/89 6 Fer ECN No. 3354 Page 3 08/91 7- Per ECN No. 4125 All 10/11/91 I

l-WV-1807, Rev. 1 i

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TR/1RTS 5 Rev. 7

- RECORD OF REVISION (CONTI!GATION SHEET)

Revision on Rev.~ No.- . Description of Changes Page(s) t 4-o W-1807, Rev. 1 11 MSS 0678:3RM

TR/lRTS 5 Rev, 7 I \1 TYPE:- TITLE: STS Process Limits IRTS S

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OSR-[~] -l l NUMBER:

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. Tech. Reqmn't. [X)l l I I CRITERIA: .1, Waste produced-shall meet the qualification of the Process Control 1 Plan.

> 2. STS shall meet the Drum Cell acceptance . criterion of less than or equal to 5.5.pci/mL of Cs-137 in LVTS concentrates used to produce the final waste form for storage in the Drum Cell, and a final product TRU

. concentration <68 nC1/g in the final waste form if the waste is to be solidified in the CSS.

'> 5. STS may transfer liquid- from 8D 1 to LWTS for volume reduction if the concentrates are returned to the vaste tank farm (8D 2).

> UNACCEPTABLE EVENTS: 1. Failure of the STS to reduce Cs-137 concentrations in decontaminated supernatant and sludge. wash solutions below levels acceptable for processing by CSS and storage in the Drum Cell.

>' 2. Final product TRU concentration >68 nC1/g.

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I Safety Limit l l Reporting Requirements: l DOE-ID CONTROL 1ED LCO l l l LCS l l l Surveillance Regmn't. l -l l l I I I I I

-Tech. Requirement I X l Critique IDOE WVPO CONTROLLED l l -l l Operating Limit i i IWVNS CONTROLLED IMPLEMENTING PROCEDURES:

l L SOP 5013 l' SOP 50 36 l SOP.50-42 SOP 50 33 S0P 00 13 SOP 50 32 i

SOP $0-44 MSS 0678:3RM l ..

TR/IRTS-5 )

Rev. 7 TECHNICAL REQUIREMENT p) i U SUPERNATANT TREA'INENT SYSTEM PROCESS 1.IMITS APPLICABILITY

> LCO No. 1 applies to the maximum concentrr. tion of Cs 137 permitted in the discharge of the final ion exchanga column in the STS. LCO No, 2 applies to the maximum Cs-137 and alpha TRU concentra' t ion permitted in the transfer of decontaminated supernatant or sludge wash solution from 8D-3 to the LWTS. LCO No. 3 applies to 11guld that is sent to LWTS for volume reduction and 1 3

ultimately returned to the WTF.

L OBJECTIVE

> To assure that the Cs 137 concentrations in decontaminated supernatant or sludge wash solutions transfarred eventually to CSS will not exceed the Drum Cell acceptance criteria of less than or equal to 5.5 yCi/mL in LWTS concentrates,

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V and the final waste form has an alpha TRU content of 568 nCi/g.

DEFINTTIONS

> 1. Decontaminated Supernatant or Sludge Wash Solution - liq'2id from Tank 8D-2 (either diluted or undiluted) that has passed through the STS ion exchange system.

> 2. Decontaminated Supernatant or Sludge Wash Solution plus Flush - a final process step for STS operation which uses liquid from Tank 8D-1, or water, to pash residual supernatant/ sludge wash through the ion exchange columns.

Typically 10,000 gallons of Tank 8D-1 liquid or 6,000 gallons of water is used to flush the columns.

3. Liquid from Tank 8D water condensed from vapor generated in Tank 8D-2 and water generated from various STS operations. This liquid has c. relatively l low salt concentration and a constantly increasing cesium concentration (as l r~'s loaded zeolite is dumped to Tanx 8D-1).

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I TR/IRTS 5 Rev. 7

> 4. TRU Concentration - Concentration of long lived alpha-emitting transuranic

(s radionuclides measured as gross alpha.

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LIMITING CONDITIONS II)R OPFRATICN (140)

> 1. LIQUID RADIATION MONITOR 50RE034 SRALL BE OPERATIONAL AT ALL TIMES TO ANALYZE CONCENTRATIONS OF RADI0 ACTIVE MATERIALS IN DECONTAMINATED SUPERNATANT PRODUCT TRANSFERRED TO TANK 8D 3. TilIS MONITOR SilALL BE CAPAbtE OF BEING CALIBP,ATED TO A LEVEL CORRESPONDING TO 10 PERCENT (OR LESS) 0F Tile Cs 137 TRANSFER LIMIT (I.E. , 50.55 pCi/mL) Tile MONITOR AIARM POINT SHALL BE SET SUFFICIENTLY LOW TO ASSURE TRAT CONCENTRATIONS OF Cs 137 IN EXCESS OF 5.5 pC1/mL BEING TRANSFERRED TO TANK 8D 3 WILL CAUSE AN AIARM. AUDIBLE AND VISUAL ALARMS SilALL BE PROVIDED IN Tile STS CONTROL ROOM.

> 2. FOR TRANSFERS OF DECONTAMINATED SUPERNATANT OR SLUDGE WASil SOLUTIONS OR FLUSH WATER FROM TANK 8D-3 TO LWTS, Tile CONCENTRATIONS OF Cs-137 (pCi/mL) AND ALPilA TRU ( Ci/mL) SilALL NOT EXCEED THE VALUES AS DETEMINED FROM THE FOLLOWING EQUATIONS:

b V EQUATION 1:

> C1 - HAXIMUM Cs-137 CONCENTRATION LIMIT IN 8D 3 (pCi/mL)

> C1 - 0.1 SG f, SG - SPECIFIC CRAVITY f, - WEICllT PERCENT DISSOLVED SOLIDS l.

AND l EQUATION 2:

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> C2 - HAXIMUM CROSS ALPHA CONCENTRATION LIMIT IN 8D 3 (pCi/mL)

L C2 - 0.034 C1 C1 - AS DETERMINED IN EQUATION 1 l > 3. LIQUID FROM TANK 8D-1, AFTEP. PROCESSING TilROUCH STS, HAY BE ROUTED FROM TANK 8D 3 TO THE LWTS FOR VOLUht REDUCTION, Tile CONCENTRATES WILL BE

, RETURNED TO TANK 8D-2. ADMINISTRATIVE CONTROLS SHALL PE USED TO EDSURE TilA1 l

THIS LIQUID IS NOT TRANSFERRED TO CSS. AT NO T7ME MAY Tile ACTIVITY 7-s i CONCENTRATION IN THE VOLUME REDUCED LIQUID EXCEED 50 pCi/mL. Cs-137 OR TRU l

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TR/IRTS-5 Rev. 7 i

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CONCENTRATIONS GREATER THAN EQUATION 1 AND 2 LIMITS SHALL NOT LIMIT TRANSFERS j('"; 0F LIQUID ORIGINATING FROM TANK 8D-1, OR FROM 8D 3, TO LWTS (LCO No 2 0F

\~s/ THIS TR). TR/IRTS-7 DOES NOT APPLY TO 1 ANK 8D-1 LIQUID PROCESSING, '

SURVEILIANCE REQUIREMENISS -

> 1. CALIBRATION OF RADIATION MONITOR 50RE034 SHALL BE PERFORMED EVERY SIX MONTHS TO ENSURE COMPLIANCE WITH LCO 1,

> 2. WHILE OPERATING STS, A SAMPLE OF TANK 8D 3 SHALL BE TAKEN DAILY AND ANALYZED FOR Cs-137 AND GROSS ALPHA TO ESTABLISH COMPLIANCE WITH EQUATIONS 1 AND 2.

> 3. TANK SD-15B SHALL BE SAMPLED AND THE ANALYTICAL RESULTS USED TO CALCULATE THE MAXIMUM VOLUME REDUCTION THAT CAN BE ACHIEVED. VHEN LIQUID FROM TANK 3D 1 IS BEING VOLUME REDUCED, TANK-5D 15A1 OR TANK SD-15A2 SRALL BE SAMPLED TO ENSURE THE CONCENTRATION DOES NOT EXCEED'THE LIMIT IN LCO 3,

, BASIS G

\m / > Satisfactory compliance with Equations 1 and 2 ensures the CSS and Drum cell acceptance criteria of a Cs-137 concentration in LWTS concentrates of

<5.5 pCi/mL and a TRU concentration in CSS product of <68 nCi/ga.

Decontaminated supernatant or sludge wash solution with a Cs 137 concentration in '

excess of the limit in Equation (1) as measured at Tank 8D-3 will be recycled to Tank 8D 2 for rework.

Volume reduc on of Tank 8D-1 liquid may be required as an emergency response to a leak in the vaste tank farm. LWTS is capable of performing this volume reduction,-to an activity limit of 50 pCi/mL (LVIS Design Criteria, WVMS-DC 025, paragraph-2.2.1). WVNS will work to the design criteria limit because of the emergency nature of this action. Decontamination factor calculations-and process control calculations designed to limit the activity concentration of waste sent to the CSS should not be applied to liquid that will be returned to the high level waste storage tanks.

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TR/IRTS-5 Rov, 7 I ATTACl!MENTS

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1. Letter, E. R. Faillace to P. J, Valenti, FB:89:0074 " Transmittal of Calculations to Estimate CS 137 Activity in LWTS Concentrates", dated 04/10/89

2. CSS Process Control Plan, WNS PCP 001.

3. Memo, E. R. Faillace to C. J. Roberts, FB:91:0014, "

Limit or Cs 137 and Alpha Transuranic Concentration in STS Product,"

dated January 17, 1991.

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