Licensing ITER

20-12-2010

• Reference• Marbach et al. Fusion Science and Technology

44 (2003) p. 251• Rodriguez-Rodrigo et al. Fusion Engineering

and Design 75-79 (2005) p. 1091• Alejaldre et al. FEC –IEAE 2008. See the pdf

given to you

The licensing procedure• ITER licensing follows the French regulation• Authority: Autorité de Sûreté Nucléaire (ASN)• Law and Decree: Law on transparency and

nuclear safety (TSN) no 2006-686 ( 13 june 2006) and Decree No 2007-1557 ( 02 Nov. 2007)

• ITER is considered as “Installation Nucléaire de Base” (INB) which means a nuclear installation (as a power plant)

• Reasons: Tritium and the level of activation of material ( Cf. Rosanvallon et al., Fusion Engineering &Design 85 (2010) 1788)

References for T

• Cf. Gugla et al. , Fusion Engineering &Design 82 (2007) 472

• Cristescu et al. , Fusion Science and Technology 52, ( 2007) 659

Some notion about T (1)

• Half life time: 12.32 years• Decay mode : decay with maximum energy

18.6 keV and average energy 5.7 keV• Activity: 3.6 1014 Bq.g-1

Some notion about T (2)

• Total natural inventory of T: estimated 3.6 kg (1300 PBq) produced through

14N +n 12C +T14N +n 3 4He + T16O+n 14C +T

Production: 0.15- 0.2 kg (50-70 PBq)

Some notion about T (3)

• Anthropogenic T:Mainly in heavy water fission reactor

(Pressurised heavy water reactor), of CANDU type ( CANadian Deuterium natural Uranium reactor)

Total production : 90 PBq/(Gwe*year) or about 0.3 kg/((Gwe*year) . A PWR produces about 2000 times less T

T and ITER

• During a 400s DT pulse, 0.4g of T is consumed.• About 2-3 kg of T is necessary for operation• 1 kg is in the Long Term Storage from external

source

Characteristics of the process

• Non prescriptive approach • Continuous dialog between the owner of the

INB (here ITER Organisation) and the ASN

The steps

Example: Dialog for 17 MA operation

includes 17 MA

Operation at 15 MA

Where are we?

• Rapport Préliminaire de Sécurité have been updated to answer questions.

• Next Step: Public Enquiry