Attribute of a system that provides grounds for having confidence that the system operates such that the system security policy is enforced.

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard


The cumulative outcome of processes, including assessments, audits, performance reporting, benchmarking, reviews and learning. The processes provide confidence and confirmation that an OMS (or any part of an OMS) is achieving its purpose and expected performance.

Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global Standards

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