presentation to the doe hlw corporate board · 2012-11-15 · 3 overview of srs tank closure...
TRANSCRIPT
![Page 1: Presentation to the DOE HLW Corporate Board · 2012-11-15 · 3 Overview of SRS Tank Closure Program Two Tank Farms –F Area and H Area Permitted by SC as Industrial Wastewater Facilities](https://reader035.vdocument.in/reader035/viewer/2022081222/5f7be6023ae3c669ee7ab444/html5/thumbnails/1.jpg)
Tank Closure
Sherri Ross
Waste Removal and Tank Closure
Waste Disposition Project
Programs Division
Savannah River Operations Office
Presentation to the DOEHLW Corporate Board
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Overview and Status of SRS Tank Closure Program
Issues/Challenges
Communications
Schedule Performance
Ceasing Waste Removal
Compliance with SC Water Protection Standards
Questions?
Topics
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Overview of SRS Tank Closure Program
Two Tank Farms – F Area and H Area
Permitted by SC as Industrial Wastewater Facilities under the Pollution Control Act
Three agency Federal Facility Agreement (FFA) DOE, SCDHEC, and EPA
51 Tanks 24 old style tanks (Types I, II and IV)
Do not have full secondary containment
FFA commitments to close by 2022
2 closed in 1997
27 new style tanks (Type III/IIIA)
Full secondary containment
No enforceable closure commitment dates
Following operational closure, Final RCRA/CERCLA closures will occur under the FFA
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Bulk Waste
Removal
Mechanical
Heel Removal
Chemical
Cleaning
Annulus
Cleaning
Final Sampling
and Isolation
Grout Tank
Cooling Coil
Flushing
Tank 4 in active BWR
Tanks 7, 9, 10, 11, 13, 14, & 15
preparation
Tank 8 being prepped for chemical cleaning
And ECC design/real waste testing in progress
Tank 16 in progress
Tanks 5, 6,18 & 19 in
progress
Tanks 17 &
20 closed
Tank Closure Progression and Status
Tank 12 in progress
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Issue/Challenge: Communications
Closure of tanks requires multiple agency involvement (Contractors, DOE, NRC, SCDHEC, EPA, Public)
Communication techniques and initiatives:
Generic and specific technical discussions
Scoping meetings in advance of work product
Regularly scheduled meetings and calls
Minimize travel by using conference calls, Webcast, etc
Joint Agency public presentations
Openly discuss schedule, expectations, needs, upcoming activities regularly
Establishing and maintaining adequate communications is extremely important and challenging
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Regulatory Documentation Path for Closure
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10/1/09 4/1/11 10/1/124/1/10 4/1/1210/1/1110/1/10 4/1/131/1/10 7/1/10 1/1/11 7/1/11 1/1/12 7/1/12 1/1/13
PA Dev
Approve PA
WD Basis Document Dev
DOE-SR Review
DOE-HQ Review
CM Public Comment Period
Approve CM – Tank 18/19
Grout Tanks
Tank 18/19 SA & Tier 2 Dev
FFA Closure Module (CM) Dev – Tank 18/19
Approval Tank 18/19 SA & Tier 2
Tank 18/19 Sample/Analyze
FFA(12/31/12)
Issue PA
RAI’s
Tank 18/19
Operationally
Closed
SCDHEC/EPA Rvw.& Comm. Incorp.
NRC
TER
RAI’s
NRC Consultation
Approve WD/Basis Document
Issue WD / Basis Document
FFA Closure Plan (GCP) Dev – FTF
GCP Public Comment Period
Approve GCP – FTF
DOE remains on
schedule to close
Tanks 18 and 19 in
May 2012
Issue/Challenge: Schedule Performance
Closure of Tanks 18 & 19
SRR Prep.DOE-SR Comm.& Incorp.
SRR Prep.DOE-SR Comm.& Incorp.
Current Date
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Issue/Challenge: Ceasing Waste Removal
Federal Facility Agreement – “DOE, SCDHEC, and EPA shall mutually agree that waste removal activities may cease.”
Agencies agreed to a two part decision: Early, non-binding decision based on qualitative evaluation
DOE present justification to SCDHEC and EPA followed by DOE written request and SCDHEC/EPA written concurrence
Concurrence for Tank 18, 19, 5 and 6 achieved in the last year
Final decision based on full quantitative evaluation in tank specific closure plans
Basis: Justify the selected technologies
Explain how waste removal was performed and why
Demonstrate deminished removal efficiency
Impacts of continued waste removal
Evaluate additional waste removal (worker dose, cost, schedule, system impacts, and potential additional risk reduction)
Visual aides
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-5,000
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
Initial
Waste
MSR
Phase 1
MSR
Phase 2
MSR
Phase 3
MSR
Phase 5
MSR
Phase 6
MSR
Phase 7
CSR
Phase 1
CSR
Phase 2
CSR
Phase 3
Tank 5
MSR II
So
lid
s V
olu
me
(g
al)
Solids Removed
Solids Remaining
Tank 5 Heel Removal History
Best estimate of
~ 2,000 gallons*
of solids remain
* Based on a qualitative estimate of the remaining solids. Final volume determination will be
included in the Closure Module.
MSR – Mechanical Sludge Removal
CSR – Chemical Sludge Removal
MSR II – Mechanical Solids Removal
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Tank 5
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-5,000
0
5,000
10,000
15,000
20,000
25,000
30,000
Initia
l S
lud
ge
Vo
lum
e
MS
R P
ha
se
s 1
an
d 2
MS
R P
ha
se
3
MS
R P
ha
se
4
MS
R P
ha
se
5
MS
R P
ha
se
6
MS
R P
ha
se
7
MS
R P
ha
se
8
MS
R P
ha
se
9
MS
R P
ha
se
10
MS
R P
ha
se
11
CS
R P
ha
se
1
CS
R P
ha
se
2
CS
R P
ha
se
3
Ta
nk 5
MS
R II
Ta
nk 6
MS
R II
So
lid
s V
olu
me (
gal)
Solids Removed
Solids Remaining
Tank 6 Heel Removal History
Best estimate of
~ 2,000 gallons*
of solids remain
* Based on a qualitative estimate of the remaining solids. Final volume determination will be
included in the Closure Module.
MSR – Mechanical Sludge Removal
CSR – Chemical Sludge Removal
MSR II – Mechanical Solids Removal
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Tank 6
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Current Status of Tanks
Tank 5 Tank 6 Total
Total Starting Volume (gal) 730,000 730,000 1,460,000
Total SMP Run Time (hr) 2,466 5,818 8,284
Total Liquid Introduced into the Tank (gal) 2,960,000 3,800,000 6,760,000
Total New Waste Created (gal) 780,000 500,000 1,280,000
Total Solids Removed (gal) 32,000 23,000 55,000
Total Solids Remaining* (gal) 2,000 2,000 4,000
Percent of Total Volume Removed (%) 99.7 99.7 99.7
* Based on a qualitative estimate of the remaining solids. Final volume determination
will be included in the Closure Module.
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Issue/Challenge: Compliance with SC Water Protection
Standards
Tanks 17 and 20 point of compliance was seep lines of two streams ~ 1 mile from F Tank Farm boundary
SCDHEC now requiring all aquifers, even under the tanks comply:
4 mrem/yr dose from beta gamma contaminates
15 pCi/L alpha concentration
Specified chemical maximum concentration limits
Demonstration of compliance will be through groundwater monitoring
SCDHEC and EPA have requested approval of a new Groundwater Monitoring Plan
Under development ~ Spring 2011
F Tank Farm Performance Assessment does not predict MCLs will be met under the tank farm for all aquifers
Does predict compliance at 100 meters from tanks
Strategy is to monitor at perimeter of closure cap (~ 100 meters) and establish Interim RCRA/CERCLA Documents with regulators to limit land use to industrial purposes and prohibit drinking of groundwater.
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Questions?
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Back-up Slides
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FY11 FY12 FY13 FY14 FY15 FY16 FY17 FY18 FY19 FY20 FY21 FY22FY10 FY23 FY24 FY25 FY26 FY27 FY28 FY29 FY30 FY31 FY32
23H
2F3F
24H1F
13H21H
15H22H10H9H
8F11H14H
4F
18F19F5F6F
7F12H
16H
FFA Commitment
LW System Plan — Revision 15
SWPF Delay Impact
LW System Plan — Revision 16
30H31H33F44F47H34F32H45F27F46F36H25F37H48H51H26F42H35H39H49H28F29H38H41H43H40H50H
Type I, II, & IV
Type III/IIIA
Tank Closure Schedule