CAN/CSA-Z275.1-93 (R2004)
Hyperbaric Facilities
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Preface
This is the third edition of CSA Standard 2275.1, Hyperbaric Facilities. It supersedes the previous editions published in 1974 and 1982.
This Standard was prepared as the result of a formal review of requirements in industry and takes into consideration current thinking and proven practices in the use of hyperbaric chambers for treatment as may be required in diving operations, work under compressed-air conditions, medical treatment, and research. It sets forth the requirements for the design, construction, maintenance, and testing of hyperbaric chambers.
This Standard differs from the first edition in that the Scope has been expanded to include all classes of hyperbaric chambers used in occupational-diving operations and in construction work in compressed air. The types of chambers included in this Standard are the transportable, evacuation, monoplace, and submersible chambers.
The committee acknowledges the assistance received from industry, governments, and institutions, including the Hyperbaric Department of the Toronto General Hospital and the Experimental Diving Unit of the Defence and Civil Institute of Environmental Medicine. The committee also acknowledges the valuable contribution of G.M. Koch to the development of this Standard.
This Standard was prepared by the Subcommittee on Hyperbaric Facilities and was formally approved by the Technical Committee on Diving and Caisson Systems and the Standards Steering Committee on Occupational Health and Safety.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
Scope
1.1 General
1.1.1
This Standard applies to hyperbaric chambers having as their primary function the subjection of humans to pressure environments exceeding 1 atmosphere absolute, such as those required in diving operations, work under compressed air conditions, medical treatment, training, and research.
1.1.2
This Standard establishes minimum requirements for the design, construction, maintenance, and testing of all hyperbaric chambers.
1.2 Classification of Manned Chambers
1.2.1 Class A - Multiple Occupancy
1.2.1.1 Stationary
A multiple-occupancy hyperbaric chamber permanently installed in a vessel, platform, or shore-based facility and fixed to a permanent foundation, this being either the vessel, platform, or building in which it is housed, shall be known as a stationary chamber.
1.2.1.2 Transportable
A multiple-occupancy hyperbaric chamber that can be moved to a diving or caisson site to support on-site operations shall be known as a transportable chamber.
1.2.2 Class B - Portable
1.2.2.1 Evacuation
A single- or multiple-occupancy hyperbaric chamber that has as its primary function the emergency transportation under pressure of an individual at risk of, or suffering from, a pressure-related ailment shall be known as an evacuation chamber.
1.2.2.2 Monoplace
A hyperbaric chamber that is capable of oxygen or air pressurization to a depth not exceeding 20 m (66 ft) for the provision of hyperbaric oxygen therapy, normally for clinical applications only, and located in a health care facility shall be known as a monoplace chamber.
Note: Certain configurations of monoplace chambers allow dual occupancy, though they are essentially identical in construction.
1.2.3 Class C - Submersible Compression Chamber (SCC)
A hyperbaric chamber that is capable of transporting personnel, at elevated pressures, from the surface to an underwater site and vice versa shall be known as a submersible compression chamber (SCC).
1.3 Hazards
In the design, construction, operation, and maintenance of hyperbaric facilities, safety begins with a recognition of the special hazards associated with hyperbaric facilities. (See Appendices A and B for a description of potential hazards.)
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