Regulatory Scenario for the Acceptance of Uncertainty Analysis Methodologies for the LB-LOCA and the Brazilian Approach

Table 1

Angra 2 NPP LB-LOCA Review.

Activity		Date
Submission of FSAR with the LOCA analysis		1998
CNEN’s Preliminary Safety Assessment		1998
GRS Expert Mission-FSAR LBLOCA Analysis and Uncertainty Method revision		1998
IAEA Expert Mission/Pisa Uni-FSAR LBLOCA Analysis and Uncertainty Method revision		1999
Issuance of CNEN Preliminary SER with 27 RAI		1999
GRS Expert Follow-up Mission		1999
Answers to the request of additional information		1999
Licensing meeting: Utility, Siemens, CNEN, GRS and Pisa University		1999
Submission of Generic Thermal Mechanics Analysis of Fuel Failures after a LOCA		1999
Submission of Angra 2 Specific Thermal Mechanics Analysis of Fuel Failures after a LOCA		1999
Emission of CNEN SER about ECCS Technical Specification		2000
Pisa University Technical Consultancy to CNEN-Regulatory audit analysis		2001
Issuance of CNEN SER: additional RAI on core nodalization and uncertainty quantification		2001
Independent LB-LOCA calculation used to check the request of a temporary 6% power uprate		2002