This Standard outlines incident investigation and prevention principles and requirements, the purpose of which is to determine causes and to prevent work-related incidents. As used in this Standard, the term incident refers to an occurrence, condition or situation arising in the course of work that resulted in, or could have resulted in, injury, illness, damage to health, or fatality. As used in this Standard, the term data refers to information collected during an incident investigation for reference or analysis. Use of Z is not contingent on an organization having an occupational health and safety management system OHSMS ; however, it does specify a Plan-Do-Check-Act cycle to ensure that management system deficiencies are identified and addressed. When hazards are identified and eliminated, and when risk is assessed and controlled in accordance with the principles in CSA Z, then the number of work- related incidents can be reduced or prevented.

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It supersedes the previous edition published in This Standard specifies requirements concerning management commitment, leadership, and participation, assignment of roles and responsibilities, identification of confined spaces, identification of hazards, risk assessment, selection and application of controls, design considerations, training, monitoring and measurement, emergency response, documentation, internal audits, and management reviews.

CSA acknowledges that the development of this Standard was made possible, in part, by the financial support of federal, provincial, and territorial occupational health and safety government agencies.

Introduction This Standard provides a an overview of the steps an organization needs to take to establish and maintain an effective confined space management program; b safety information for workers entering confined spaces and for persons responsible for ensuring the safety of such workers; and c requirements for confined space emergency preparedness and rescue.

Clause 4 specifies general requirements for a comprehensive confined space management program. Clauses 5 to 8 specify requirements for planning and implementing a confined space management program. Clause 5 specifies roles and responsibilities. Clause 6 specifies requirements for hazard identification and risk assessment, development of entry procedures, emergency response planning, and assessment of worker capability for performing assigned duties within a confined space.

Clause 7 specifies requirements related to training, Clause 8 specifies requirements related to controls, emergency response activities, and documentation. Clauses 9 and 10 specify requirements related to incident investigation and analysis, corrective actions, internal audits, and management reviews. These activities can help ensure worker safety and facilitate continual improvement of a confined space management program.

Scope 1. It is intended to be referenced by other standards as the primary set of requirements for health and safety management of work in confined spaces.

This Standard is designed for voluntary application in Canadian workplaces. However, the principles established in this Standard are based on best practices recognized internationally. As such they can be applied to any workplace. Note: At the time of publication, confined space legislation differs from jurisdiction to jurisdiction in Canada. This Standard does not address safety management of a enclosures or structures designed and constructed for continuous human occupancy; or b underwater enclosures.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative mandatory or informative non-mandatory to define their application. The values given in parentheses are for information and comparison only.


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