saltstone overview - srs
TRANSCRIPT
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
2
7/26/10
Outline
• Position in the Liquid Waste Flowsheet
• Facility History
• Current Process Overview
• Recent Operations
• Future Mission Requirements
• Summary
3
7/26/10
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
4
7/26/10
Liquid Waste Flowsheet
5
7/26/10
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
6
7/26/10
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
7
7/26/10
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
8
7/26/10
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
9
7/26/10
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
10
7/26/10
Summary
• Saltstone operations fulfills all mission requirements:
– Workforce Safety
– Process Safety
– Environmental Stewardship
– Life Cycle Objectives