Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the...
Transcript of Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the...
![Page 1: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/1.jpg)
Decommissioning of the accelerator park INW
from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert Thierens
Ghent University, Health Physics Department
Sven Boden, Luc Noynaert, Luc Ooms,
SCK•CEN, Dismantling & Decontamination Unit
Karel Strijckmans
Ghent University, Department of Analytical Chemistry
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 2: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/2.jpg)
Introduction
• Decommissioning plan: contains info about inventory,
estimation of amounts of waste,…
→ strategy, total cost assessment
• Important factor : degree of activation
→ radiological characterization
• SCK•CEN, Decommissioning & Decontamination Unit
→ inventory of all metal components
→ radiological characterization of concrete structure
of cyclotron
→ decommissioning plan & safety report
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 3: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/3.jpg)
Accelerator park
• Location of the accelerator park
• Installations to dismantle
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 4: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/4.jpg)
UZ Gent
E17
UGent-INW
AA Gent
Location in Ghent
Schelde
railroad
![Page 5: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/5.jpg)
Bestralingsruimte (IIA)
Afvallokalen kl II
cyclotron (IIA)
LINAC’s en Van de
Graaf
Laboratoria (II en III)
Meetzone (kl II)
D/T generator
N8 N3
N4
Location on the INW-site
![Page 6: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/6.jpg)
1. Cyclotron
Cyclotron CGR type 520
→ polemagnet ᴓ 120 cm, 28 t
→ multiparticle :
• p+ (2,5 - 24 MeV)
• 2H (3 - 14,5 MeV)
• 3He (6 - 32 MeV)
• α (10 - 29 MeV)
Cyclotron
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 7: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/7.jpg)
→ Operational: 1977 – 2006
• 7-10h/day
• 40-45 weeks/year
→ 1977 – 1982 : 3 beamlines
→ 1982 : + 3 beamlines & hotlab
→ Used for research in
radiochemistry
Cyclotron
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 8: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/8.jpg)
Kazemat:
Cyclotron CGR 520
Alveole 1:
1977 – 1982: PET → 11C
1979 – 1984: FNAA
1982 – 2006: CPAA
Alveole 2:
1982 – 2006: PIXE
Alveole 3:
1977 – 1982 (1 beamline): CPAA
1982 – 2006 (3 beamlines): isotope production → 11C, 18F, 15O
BetonBlokken
3,7 m
hoog
BetonBlokken
5,6m hoog
BetonBlokken
2 m hoog
100.046Alveole 1
100.047Alveole 2
100.048Alveole 3
100.038
Alveole 4
100.030Alveole 5
100.054Kazemat
kazemat
Alveole 1
Alveole 2
Alveole 3
Cyclotron
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 9: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/9.jpg)
Alveole 4: Isotope production → 81Rb/81mKr
Alveole 5: Neutron therapy unit
Mostly used for experimental
neutron irradiation.
Hotlab: preparation radiopharma
→ 6 hotcells and 4 fume hoods
BetonBlokken
3,7 m
hoog
BetonBlokken
5,6m hoog
BetonBlokken
2 m hoog
100.046Alveole 1
100.047Alveole 2
100.048Alveole 3
100.038
Alveole 4
100.030Alveole 5
100.054Kazemat
Cyclotron
![Page 10: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/10.jpg)
2006: Final shutdown
Equipment → largely intact and still in place
Only small loose parts
and some peripheral
equipment
→ removed
Cyclotron
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 11: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/11.jpg)
Bestralingsruimte (IIA)
Afvallokalen kl II
cyclotron (IIA)
LINAC’s en Van de
Graaf
Laboratoria (II en III)
Meetzone (kl II)
D/T generator
N3
LINAC’s & Van de Graaff
![Page 12: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/12.jpg)
2. 90 MeV LINAC
→ Operational: 1975 – 1995
• 60 000 h
• 30 – 70 MeV
→ Components:
• electron gun
• 2 accelerator sections
• Positronconvertor
• beam transportsystem
• peripheral equipment
90 MeV LINAC
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 13: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/13.jpg)
→ Used for: Nuclear Physics research
→ Today: disassembled
• (possibly) activated parts
→ stored
• peripheral equipment
→ removed
90 MeV LINAC
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 14: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/14.jpg)
15 MeV LINAC
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
3. 15 MeV LINAC
→ Operational: 1986 – 2008
• 50 000 h
• max 10 MeV
→ Components:
• electron gun
• 2 accelerator sections
• beam transportsystem
• peripheral equipment
![Page 15: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/15.jpg)
15 MeV LINAC
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
→ Used for:
• before ‘97: Fundamental Nuclear Physics
research
• after ’95: Applied multidisciplinary research
→ Today: partially disassembled
• beam transport system → in place
• electron canon + 2 beamline sections →
stored
• peripheral equipment → removed
• shielding → re-used on site
![Page 16: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/16.jpg)
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
4. 2 MeV Van de Graaf accelerator
→ Operational: 03/12/1999
→ 22Na source was damaged
during first start-up of accelerator
→ Decontamination: 04/04/2000
→ Accelerator was never used again
→ Today: disassembled
• contaminated section → stored
• not contaminated parts → donated
to scientific history museum UGent
Van de Graaff
![Page 17: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/17.jpg)
5. Other accelerator parts
→ 2 sections LINAC Rozier (UGent < 1975)
→ 2 sections IRMM
Other parts
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
![Page 18: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/18.jpg)
Bestralingsruimte (IIA)
Afvallokalen kl II
cyclotron (IIA)
LINAC’s en Van de
Graaf
Laboratoria (II en III)
Meetzone (kl II)
D/T generatorN4
D/T generator
![Page 19: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/19.jpg)
6. 14 MeV Neutron generator type J (Sames) 2H particles accelerated up to 150 keV to a 3H target
→ quasi mono-energetic 14 MeV neutrons
Water-cooled 3H target (Nukem, D; 2,8 1011 Bq in 1970)
Neutron flux: 109 n cm-2
→ Operational: 1960 – 1980
→ Today:
• Largely intact
• Stored in place
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht
D/T generator
![Page 20: Decommissioning of the accelerator park INW from the Ghent ...€¦ · Decommissioning of the accelerator park INW from the Ghent University Myriam Monsieurs, Isabelle Meirlaen, Hubert](https://reader033.fdocuments.us/reader033/viewer/2022060606/605c28e7574084164a3d60ed/html5/thumbnails/20.jpg)
Radiological characterization of the UGent
cyclotron in view of its dismantling
Sven Boden & Luc Ooms (Dismantling & Decontamination Unit, SCK•CEN)
[email protected], [email protected]
Isabelle Meirlaen, Myriam Monsieurs, Hubert Thierens & Karel Strijckmans (UGent) [email protected], [email protected], [email protected], [email protected]
Mini-workshop “Radiological Characterization of Cyclotrons for Dismantling”, January 25th, 2016, BEL V, Anderlecht