1

Saltstone Overview

Presented to Citizens Advisory Board Waste Management Committee

July 26, 2010

Steve WilkersonWaste Treatment Manager

Savannah River Remediation

SRR-WTF-2010-00001

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Outline

• Position in the Liquid Waste Flowsheet

• Facility History

• Current Process Overview

• Recent Operations

• Future Mission Requirements

• Summary

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Acronyms

ARP Actinide Removal Process

DDA Deliquification, Dissolution and Adjustment

DSS Decontaminated Salt Solution

ETF Effluent Treatment Facility

HTF H Tank Farm

MCU Modular Caustic Side Solvent Extraction Unit

SCIX Small Column Ion Exchange

SWPF Salt Waste Processing Facility

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Liquid Waste Flowsheet

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Facility History

Key Events

• Radioactive startup authorized in 1990.

• Modified in 2006 to support DDA and ARP/MCU campaigns.

– Design Basis of 0.2 curie/gallon salt feed material

Production Summary

• 1990 to June 2009 ~8 M gallons

• July 2009 to present >1.2 M gallons

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Weigh Hopper

PremixFeedBin

Mixer

“Hopper”

Silo #1

Spare

Silo #2

Flyash

Silo #3

Cement

Silo #4

Slag

A B C D E F

L

Salt FeedTank

From HTF

VAULT #4

KJIHG

Drainwater

GroutPump

AirBlenders

WeighHopper

Current Process Overview

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Recent Operations

• Saltstone production has supported all mission requirements.

• Saltstone capacity greatly exceeds current requirements.

• Saltstone has experienced several extended outages (planned and unplanned) in the past year.

• Operational Improvement Plan has been developed to position the facility to support higher future throughput from SWPF and Supplemental Salt Processes.

Saltstone Processing

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

Jan-0

9

Jan-0

9

Feb-0

9

Feb-0

9

Mar-

09

Mar-

09

Mar-

09

Apr-

09

Apr-

09

May-

09

May-

09

Jun-0

9

Jun-0

9

Jul-09

Jul-09

Aug-0

9

Aug-0

9

Sep-0

9

Sep-0

9

Sep-0

9

Oct

-09

Oct

-09

Nov-

09

Nov-

09

Dec-

09

Dec-

09

Jan-1

0

Jan-1

0

Feb-1

0

Feb-1

0

Mar-

10

Mar-

10

Mar-

10

Apr-

10

Apr-

10

May-

10

May-

10

Jun-1

0

Jun-1

0

Jul-10

Jul-10

Date

Gallo

ns f

rom

Tan

k 5

0

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Mission Requirements

SaltstoneProcessing

Facility

SWPF

SCIX

Tank 50 or Saltstone Feed

Facility

SaltstoneDisposalFacility

Tank Farm

ETF &H Canyon

ARP/MCU

100 kgal DSS / wk

270 kgal DSS / wk

5 kgal DSS / wk

40 kgal DSS / wk

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Planned Improvements

• Performed comprehensive analysis of People, Plant, and Process Requirements to increase Availability, Reliability, and Attainment.

• Short Term– Redesign Grout Hopper – Implement 24 x 7 Operations

• Mid Term– Address Equipment Obsolescence– Improve Spare Equipment Availability

• Long Term– Enhance Process

• Redundant Trains / Alternate Process Flowsheet• Safety Basis Control Optimization

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Summary

• Saltstone operations fulfills all mission requirements:

– Workforce Safety

– Process Safety

– Environmental Stewardship

– Life Cycle Objectives