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CSA Z316.5-2020

Fume hoods and associated exhaust systems

Preface This is the fourth edition of CSA Z316.5, Fume hoods and associated exhaust systems . It supersedes the previous editions published in 2015, 2004, and 1994. The major changes to this edition include the following: • the addition of ductless fume hoods to the scope; • new requirements for selection criteria and risk assessment of fume hood types; • new requirements for ductless fume hoods; • new guidance on exhaust snorkels and canopy hoods; and • expanded requirements for training and safe operating practices for fume hood users and maintenance staff. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of the governments of Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan, and Yukon, as administered by the Canadian Agency for Drugs and Technologies in Health (CADTH). 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 This Standard applies to all types of laboratory fume hoods, including ductless fume hoods. The following clauses are not relevant to ductless fume hoods: 4.3.6, 4.3.7, 4.3.8, 4.4, 5.3.5.1, 7.2, and 10.3.2.4l) to p). Note: Ductless fume hoods should not be considered acceptable substitutes for ducted fume hoods. They may be suitable alternatives provided there is an application-specific review (i.e., risk assessment) and written approval by the manufacturer. Some jurisdictions prohibit the use of ductless fume hoods with certain chemicals. 1.2 This Standard specifies a) safety requirements for fume hoods, their users, and service personnel; b) requirements for fume hood and exhaust system design and construction; c) requirements for fume hood placement; d) test methods for assessing fume hood performance; e) requirements for the selection, use, and maintenance of fume hoods; f) requirements for the education and training of fume hood users and maintenance personnel; g) requirements regarding information to be exchanged between suppliers and users of fume hoods to ensure that installation, function, and maintenance are compatible with the intended use; and h) requirements for commissioning. Notes: 1) Users of this Standard should note that fume hood requirements are also established by authorities having jurisdiction. 2) Other fume hood requirements can be found in, e.g., the National Building Code of Canada, the National Fire Code of Canada, the Canadian Environmental Protection Act, and the Nuclear Safety and Control Act. 1.3 This Standard does not address detailed design considerations, such as hood design, fan selection, and duct/stack velocities. This Standard does not apply to biological safety cabinets. Notes: 1) Requirements applicable to the installation and field testing of biological safety cabinets are found in NSF/ ANSI 49. 2) This Standard is not intended to be used by manufacturers for the certification of their fume hoods. 1.4 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. 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. 1.5 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.


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CSA America, Inc. [CSA]


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