1

Saltstone Enhancements

Presentation to the Citizens Advisory Board

January 24, 2012

Karthik Subramanian

Chief Technology Officer

Savannah River Remediation

2

Agenda

• Salt Waste Processing Flowsheet

• Current Saltstone Process

• Saltstone Enhancements

• Current Status

3

Salt Waste Processing

Saltstone has begun the facility transformation that will enable the continued fulfillment of all mission requirements:

• Workforce Safety

• Process Safety

• Environmental Stewardship

• Life Cycle Objectives

SaltstoneProcessing

Facility

SWPF

SCIX

Tank 50 or Saltstone Feed

Facility

SaltstoneDisposalFacility

Tank Farm

ARP/MCU

ETF & H Canyon

~100 kgal DSS / wk

~270 kgal DSS / wk

~5 kgal DSS / wk

~40 kgal DSS / wk

Legend

Current

Future

4

Current Saltstone Process

Mixer

“Hopper”

Grout Pump

Clean Cap BatchTank

Salt Feed Tank

Drainwater

VAULT #4

A B C E F

LKIHG

D

J

From HTF/ETP

Premix

WeighHopperWeigh Hopper

AirBlenders

FeedBin

Silo #1Spare

Silo #2

Flyash

Silo #3

Cement

Silo #4

Slag

Phased upgrades are planned to address risks due to

aging equipment and existing system capabilities.

• Enhanced Low Activity Waste Disposition (ELAWD)

• Saltstone Disposal Unit #2

• Salt Solution Receipt Tanks

5

Current Outage – Phase I

Mixer

“Hopper”

Grout Pump

Clean Cap BatchTank

Drainwater

VAULT #4

A B C E F

LKIHG

D

J

Premix

WeighHopperWeigh Hopper

AirBlenders

FeedBin

Silo #1Spare

Silo #2

Flyash

Silo #3

Cement

Silo #4

Slag

Salt Feed Tank

From HTF/ETP

Scope

1. Installing a redesigned grout hopper (Increased operating margin)2. Replacing the mixer (End of life)3. Installing a redesigned mixer chute to incorporate dry feed buildup

monitoring (Enhanced process monitoring)4. Installing redesigned process piping with optimum slopes,

minimization of elbows, etc. (Improved maintainability)5. Installing a redesigned high pressure flush system (Improved

maintainability)6. Connecting new Saltstone Disposal Units (Required capacity, State

of the Art facility)

SDU#2

Cell 2A Cell 2B

Salt Disposal

Unit #2

Mixing &

Transfer

System

6

2013 Modifications – Phase II

Mixer

“Hopper”

Grout Pump

Clean Cap BatchTank

Drainwater

VAULT #4

A B C E F

LKIHG

D

J

SDU#2

Cell 2A Cell 2B

Scope

1. Replacing screw feeders (Obsolete equipment)2. Installing additional dust collectors (Increased

operating margin)3. Enhancing dry feed equipment (Obsolete

equipment, Increased operating margin, Improved maintainability)

4. Installing larger Salt Solution Receipt Tanks (Increased operating margin)

5. Improving balance of plant equipment (Obsolete equipment, Increased operating margin, Improved maintainability)

Premix

WeighHopperWeigh Hopper

AirBlenders

FeedBin

Silo #1Spare

Silo #2

Flyash

Silo #3

Cement

Silo #4

Slag

Dry Feeds

System

From HTF/ETP

Salt Feed Tank

SSRT#1Tank

SSRT#2Tank

From HTF/ETP

Salt Solution

Receipt Tanks

Salt Feed Tank

Drainwater

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24/7 Modifications

Mixer

“Hopper”

Grout Pump

Clean Cap BatchTank

Drainwater

VAULT #4

A B C E F

LKIHG

D

J

SDU#2

Cell 2A Cell 2B

SSRT#1Tank

SSRT#2Tank

From HTF/ETP

Salt Feed Tank

Drainwater

Premix

WeighHopperWeigh Hopper

AirBlenders

FeedBin

Silo #1Spare

Silo #2

Flyash

Silo #3

Cement

Silo #4

Slag

Scope

1. Infrastructure for 24/7 operation support facilities (Required capacity)

2. Safety Basis documentation change to operate on a 24/7 shift (Required capacity, Increased operating margin)

3. Acquire and train personnel for 24/7 operations (Required capacity)

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As of Nov 30, 2011

Data (gallons—end of month) Oct-11 Nov-11 Dec-11 Jan-12 Feb-12 Mar-12 Apr-12 May-12 Jun-12 Jul-12 Aug-12 Sep-12

Actual Tank 50 Processed (Cumulative) 381,676 812,437 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A

ELAWD Outage700 kgal

1,200 kgal

-

250

500

750

1,000

1,250

1,500

thousa

nds

of

gall

ons

Actual Tank 50Processed

(Cumulative)

Forecast Tank 50Processed(Cumulative)

ProductionMilestone

Current Status

• Vault 4 Cell B Successfully Filled

• Phase I Outage In Progress and On Schedule

Note - Concurrent MCU Life Extension Outage Planned

• FY2012 Processing Operations On Schedule

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Acronyms

ARP – Actinide Removal Process

DSS – Decontaminated Salt Solution

DWPF – Defense Waste Processing Facility

ELAWD - Enhanced Low Activity Waste Disposal

ETF – Effluent Treatment Facility

HTF – H Tank Farm

MCU – Modular Caustic Side Solvent Extraction Unit

SCIX – Small Column Ion Exchange

SDU – Saltstone Disposal Unit

SSRT – Salt Solution Receipt Tank

SWPF – Salt Waste Processing Facility