CSA N290.19:18

Introduction

0.1 General
Risk-informed decision making (RIDM) is a process that provides a formalized, rational, and systematic methodology for identifying, assessing, and communicating the various factors that support making a risk-informed decision. It helps ensure consistency from one decision to the next, helps ensure that important considerations are not overlooked, and provides a framework for the comprehensive documentation of the basis on which decisions are made.

0.2 Overview
The objective of this Standard is to provide a systematic approach to assist in decision making at nuclear power plants (NPPs) using a RIDM process.
This Standard describes the application of RIDM, the bases for risk-informed decisions, the key steps in the RIDM process, and management of the RIDM process.
This Standard is intended specifically to address matters of concern that have potential safety implications as well as those that have an adverse impact on operations of NPPs.

0.3 Users
This Standard is primarily intended for use by designers, operators, regulators, and individuals or organizations providing support to regulators and utilities.