Preface
This is the twelfth edition of CSA International’s B149.1, Natural Gas and Propane Installation Code. It supersedes previous editions, published in 1995, 1991, 1986, 1980, 1978, 1976, and 1974 by the Canadian Gas Association and in 1971, 1966, 1962, and 1958 by the Canadian Standards Association.
In 1958, the Canadian Standards Association published the first edition of CSA Standard B149, Installation Code for Gas Burning Appliances and Equipment. It was superseded by later editions in 1962, 1966, and 1971.
Following the publication of the 1966 edition, the decision was made to split the Code into two parts: the first part, to be designated B149.1, would deal with the installation requirements for appliances and equipment burning natural gas; the second part, to be designated B149.2, would deal with the installation of appliances and equipment burning propane. As a first step it was decided to prepare B149.2, which was first published in 1969.
The Canadian Gas Association was accredited by the Standards Council of Canada as the standards development organization responsible for preparing standards for gas-burning appliances and equipment, and in this connection took over responsibility for the B149 Code in 1974. New editions of the Code were subsequently published in 1974, 1976, 1978, 1980, 1986, 1991, and 1995.
On 30 June 1997 the Canadian Standards Association (CSA) acquired International Approval Services (IAS), which was until then a joint venture of the American Gas Association (AGA) and the Canadian Gas Association (CGA). Under this agreement CSA acquired the complete range of IAS standards administration, certification, and registration products and services for appliances and accessories fuelled by natural and liquefied petroleum gases. In 1998 the CSA B149 Installation Code Committee agreed to publish a Natural Gas and Propane Installation Code that would amalgamate the first seven sections of CAN/CGA-B149.1 and CAN/CGA-B149.2 to become CSA B149.1. This amalgamation was in response to the trend among the authorities having jurisdiction of combining licensing and training for natural gas and propane. The remaining sections 8 to 14 of CAN/CGA-B149.2 would become CSA B149.2, Propane Storage and Handling Code.
The CSA B149 Installation Code Committee, which is responsible for preparing this Code, consists of members of the provincial gas inspection authorities, natural gas utilities, propane distributors, appliance, equipment, and accessory manufacturers, certification organizations, and representatives from the Heating, Refrigeration and Air Conditioning Institute, the Mechanical Contractors Association of Canada, and federal government departments. This Code has been approved by the CSA B149 Installation Code Committee and accepted by the Interprovincial Gas Advisory Council. It will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.
Scope
1.1
This Code applies to
(a) the installation of appliances, equipment, components, and accessories where gas is to be used for fuel purposes;
(b) the installation of piping and tubing systems extending from the termination of the utility installation for natural gas or from the distributor's propane tank; and
(c) the installation of vehicle-refuelling appliances and associated equipment meeting the requirements of a general purpose appliance to fill a natural-gas-fuelled vehicle.
1.2
This Code does not apply to
(a) marine or pipeline terminals;
(b) petroleum refineries;
(c) gas where used as a feedstock in chemical plants;
(d) utility pipeline distribution and transmission pipelines;
(e) storage and handling of liquefied natural gas or underground reservoirs for natural gas;
(f) the installation of NGV fuel systems, containers, and refuelling stations;
(g) the storage and utilization of compressed natural gas on boats;
(h) the installation of vehicle-refuelling appliances when NGV storage containers are installed as part of the system;
(i) refrigerated storage or underground reservoirs for propane;
(j) propane used on boats;
(k) propane used as a propellent in aerosol containers;
(l) butane fuel cylinders of 250 g capacity or less; and
(m) the installation of containers and equipment to be used for propane in distribution locations and filling plants and on tank trucks, tank trailers, and cargo liners.
1.3
Where the term gas is used, the requirements of this Code apply equally to and include any of the following gases or mixtures of them: natural gas, manufactured gas, or mixtures of propane gas and air, propane, propylene, butanes (normal butane or isobutane), and butylenes.
1.4
For the purpose of this Code, the requirements contained in CGSB Standard CAN/CGSB-3.14 for propane or CAN/CGSB-3.13 for butane apply.
1.5
The values given in yard-pound units are the standard. The values given in parentheses are for information only.
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