mosi dayani, mfff project engineer u.s. department of energy, nnsa presentation to the doe operating...
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![Page 1: Mosi Dayani, MFFF Project Engineer U.S. Department of Energy, NNSA Presentation to the DOE Operating Experience Committee, 2010 ISM Champions Workshop](https://reader033.vdocuments.net/reader033/viewer/2022061306/55148f84550346b2598b522c/html5/thumbnails/1.jpg)
Mosi Dayani, MFFF Project EngineerU.S. Department of Energy, NNSA
Presentation to the DOE Operating Experience Committee, 2010 ISM Champions Workshop
MOX Fuel Fabrication Facility:Leading the Nuclear Renaissance
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• At the end of the Cold War, U.S. and Russia began to cooperate to
prevent the proliferation of weapons of mass destruction
• In 1995 National Academy of Sciences studied and recommended disposal options for Weapons Grade fissile materials– Plutonium: mix with depleted U to produce mixed oxide fuel (MOX
Program)
• In 2000, both countries signed agreement– Each to dispose of 34 metric tons of surplus weapons-grade plutonium
• Enough for thousands of nuclear weapons– Convert to MOX Fuel for power reactors
Pu Disposition Program
Obj. 1
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Pu Disposition Program
Weapons Dismantlement
atPantex Interim Storage
at PantexPit Disassembly
& Conversion at Savannah River
MOX FuelFabrication
(MP)
PlutoniumPits
CleanMetal
Spent fuel is unsuitable and unattractive for use in nuclear
weapons
AqueousPurification (AP)
Capability
Obj. 1
Non-PitPlutonium*
Impure Plutonium
Oxide
Interim Storageat SRS
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MFFF Prime Contract
• MFFF prime contract awarded in 1999 to Duke Cogema Stone & Webster, now Shaw AREVA MOX Services
• Base Contract - Design, Licensing, Reactor Upgrades, Lead Test Assemblies
• Option 1 - Construction and Cold Start-up
• Option 2 - Hot Start-up, Fuel Production Operations, and Irradiation Services
• Option 3 - Deactivation
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MFFF Main Functions
• Aqueous Polishing (AP) - Purify PuO2 to produce a feed stock to suitable for MOX fuel.
• Manufacturing Process (MP) - Blend PuO2 with DUO2, produce fuel pellets, and load into MOX fuel assemblies.
Obj. 2
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Regulatory Requirements
• U.S. Congress mandated (Public Law 105-261, 17 October 1998, Section 3134) the MFFF will be:– Licensed and regulated by the NRC (10 CFR 70)
– Comply with Occupational Safety and Health Administration Act of 1970
• DOE and NRC requirements met for Physical Security
• NRC requirements (10 CFR 74) for Material Control and Accountability
• Supplemented by a selected set of DOE Directives imposed by contract for project management, financial management, record keeping, etc.
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MOX Fuel Fabrication Facility
Irradiate MOX fuel assemblies
Purify plutonium oxide Mix with uranium oxide
Fabricate Pellets
Fabricate
fuel assemblies
MOX Fuel Fabrication Facility Commercial Nuclear Reactors
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MOX Fuel Fabrication Facility
La Hague
Melox
Paris
630 miles
MFFF Design Reference Plants
MELOX - model for the MFFF MP Process
- > 1400 tons MOX fuel produced at MELOX
La Hague – model for the MFFF AP Process
- 20,000 tons of spent fuel reprocessed at La Hague
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MOX Fuel Process Overview
Aqueous Polishing (AP)• used to remove contaminants (primarily Ga, Am, and Cl)
PuO2
Dissolution
PurificationCycle
PuO2
Conversion
Powder Master Blend & Final
Blend
PelletProduction
RodProduction
Fuel Assembly
MOX Process (MP)• process blends UO2 and PuO2 powder into pellets• loads pellets into rods• manufacture of fuel assemblies
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Aqueous Polishing Process
Electrolytic Dissolution of PuO2 Powder into a
Nitric Acid Solution Chemical Purification Steps to Separate Pu from Contaminates
Conversion of Pu in solution to
PuO2 Powder
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Oxide Powder Blending
1 - Primary blending of
Powder to 20% Pu02 mixture
2 - Secondary blending of
Powder to 5% Pu02 mixture
Scrap U02 Pu02 (From AP Process) U02 Primary Blend
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Pellet Prod. & Rod Assembly
1 - Blended PuO2 Powder 2 - Pellet Pressing 3 - Pellet Sintering
4 - Pellet Grinding
5 - Rod Loading
6 - Assembly Fabrication
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MFFF Production Rates
• 3.5 metric tons of Pu per year
• 70 tons of MOX fuel per year production capacity
• 1 Assembly built per day
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MOX Fuel Fabrication Facility
• MFFF Process Building is a 500,000 ft highly secure, seismically-resistant steel reinforced concrete structure
• Construction approved in April 2007
• Began Construction in August 2007
• Baseline
– Total Project Cost $4.86 Billion
– Project Completion, October 2016
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MFFF Design Facts
• Three discrete facilities combined in a single building:– Aqueous Polishing building: 7 levels including underground– Fuel Fabrication building: 3 levels all above ground– Shipping and Receiving building: 3 levels including
underground
• Complex architecture and layout– 598 rooms/cells – 300 glove boxes
• Highly automated systems– 40,000 Control Inputs/Outputs– 80 non-safety Programmable Logic Controllers (PLC)– 13 safety PLCs– Manufacturing Management Information System (MMIS): 2
million lines of code drives the production process
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Safety & Security Design
• Nuclear Material Confinement
• Criticality Prevention
• External Events
• Radiation Protection
• Fire Protection
• Security Functions
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MOX Fuel Fabrication Facility
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MFFF Construction SiteMFFF Construction SiteAugust 2007August 2007
Start of Construction
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MFFF Construction SiteMFFF Construction SiteMay 2010May 2010
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MFFF ConstructionMFFF ConstructionInterior wall rebar installationInterior wall rebar installation
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MFFF ConstructionMFFF ConstructionFloor section ready for concrete placementFloor section ready for concrete placement
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MFFF ConstructionMFFF ConstructionWall Rebar InstallationWall Rebar Installation
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MFFF Construction SiteMFFF Construction SiteRod Storage Room, Aug. 2010Rod Storage Room, Aug. 2010
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Typical AREVA Gloveboxes
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MFFF Construction SiteMFFF Construction SiteSintering Furnace Cooling Water Tank, Aug. 2010Sintering Furnace Cooling Water Tank, Aug. 2010
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Annular Tanks in Process Cell(AREVA Facility)
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Piping Gallery(AREVA Facility)
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MFFF, Aug. 2010MFFF, Aug. 2010Setup of KCB unit gloveboxes for assembly and testSetup of KCB unit gloveboxes for assembly and test
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DOE Experience
• Microcosm of larger nuclear industry No large new nuclear facilities built for
nearly 20 years Emergence of several major projects in recent years Hanford Waste Treatment Plant Mixed Oxide Fuel Fabrication Facility Uranium Processing Facility Chemical and Metallurgical Replacement Pit Disassembly and Conversion Salt Waste Processing Facility
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DOE Experience
• Supplier network not in place to support multiple large projects
• Existing qualified suppliers could only support ongoing operations, maintenance and smaller projects
• New projects have had to address supplier challenges
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Meeting the Challenge
• Sponsor and support vendor workshops to highlight opportunities and requirements for nuclear work
• Develop flexible acquisition strategies that address alternatives when suppliers can’t perform
• Plan for and allocate budget to offset cost and schedule risks of supplier issues
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Meeting the Challenge
• Enhance the technical capabilities and training of federal oversight staff to assess supplier work
• Perform risk-based supplier reviews and assessments against requirements
• Exchange lessons learned and supplier information with other DOE projects
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Obtaining Desired Results
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Lessons Learned
• Construction Approach – Develop Construction Management Plan very early in the project in enough detail so the reader knows the intent and goals of each section, get peer and client buy in, modify as project progresses and assure revisions are disseminated to Eng. QA, Procurement etc. (try and keep everyone on the same page)
• Host Site Integration – Make sure the roles, responsibilities and
protocols are formalized in a document and agreed upon
• Readiness for Construction – Perform a detailed assessment on
all articles and activities necessary to start and maintain construction activities (the results will surprise you)
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Lessons Learned
• Readiness for Construction II – Perform a second detailed assessment to guarantee all findings from the 1st assessment are implemented
• Imbed Construction with Design – During the design phase perform constant
constructability reviews (add disciplines as design matures, and also perform formals constructability reviews at 30, 60, 95 % design complete (otherwise design will never complete)
• Procurements – Vendors with a NQA-1 qualified program are very scarce, fabricators are better but the population is limited, Installation subcontractors with a NQA-1 qualified program are almost extinct because they have not used their programs in many years. Put all installation under one program or the record keeping will become chaotic
- Prequalify as many vendors, fabricators and subcontractors as you can if you intend on bidding the entire project scope
- Increase your lead time on procurements and carefully examine your schedule for long lead procurements
- Develop and qualify your Commercial Grade Dedication program early.- Use the best value approach when subcontracting, it is more work than low
bid technically qualified but allows you to select the best subcontractor
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Lessons Learned
• Concrete Batch Plant – If you are going to establish an onsite batch plant (recommended for large NQA-1 concrete projects) you should- Allow one year to set it up and get it qualified- Qualify all your mix designs during batch plant qualification- Operate the plant yourself and use your QA/QC program for material
qualification and inspection- Evaluate your concrete placement schedule and size the plant
material storage for at least 1 ½ more than the largest pour • Material Receipt - Operate the warehouse and lay down in accordance
with your QA/QC requirements- Establish the program responsibilities i.e. what group is responsible
for inspection, inventory etc- Determine storage parameters and size warehouse appropriately - Determine quality inspection attributes- Quality level 1 material must be controlled in a ‘chain of custody’
• Plan and Execute the construction by procedure and written work plans
that are constantly reviewed for accuracy
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Project Performance Summary
• Project is 46% complete overall
– Facility construction is 32% complete
• Process Building construction continues on schedule and cost
• Project safety continues to be excellent
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MOX Fuel Fabrication Facility:Leading the Nuclear Renaissance
END……….Questions?