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The Coloured Books are widely regarded as the standard for consequence and risk analysis for industrial applications. They serve as how-to guidelines and are extensively used as a reference in the global safety community.

• Yellow Book: Methods for the calculation of physical effects due to releases of hazardous materials (liquids and gases).

• Green Book: Methods for the determination of possible damage to people and objects resulting from releases of hazardous materials.

• Purple Book: Guidelines for quantitative risk assessment.

• Red Book: Methods for determining and processing probabilities.