Customer Service:
Mon - Fri: 8:30 am - 6 pm EST

CSA: Canadian Standards Association

CSA Group is a global organization dedicated to safety, social good, and sustainability. CSA Group is a leader in Standards Development and in Testing, Inspection and Certification around the world, including Canada, the U.S., Europe, and Asia. The mission of CSA Group’s not-for-profit Standards Development Organization is to enhance the lives of people through the advancement of standards in the public and private sectors.  The technical and management standards developed with more than 10,000 CSA Group volunteer members help improve safety, health, the environment, and economic efficiency. CSA Group is also a major educator in the application of standards, offering instructor-led training (in-person or virtual), self-paced online courses, personnel certification, and other learning products to meet the needs of standards users. Standards from CSA are available both individually, directly through the ANSI webstore, and as part of a Standards Subscription. If you or your organization are interested in easy, managed, online access to standards that can be shared, a Standards Subscription may be what you need - please contact us at: [email protected] or 1-212-642-4980 or Request Proposal Price.

Below are CSA's best-selling standards. To find additional standards, please use the search bar above.

 Back to All Publishers Home

CSA/ANSI B149.6-2020

Code for digester gas, landfill gas, and biogas generation and utilization

Preface This is the second edition of CSA/ANSI B149.6, Code for digester gas, landfill gas, and biogas generation and utilization. It supersedes the previous edition published in 2015. The major changes to this edition include the following: • The Scope was amended to clarify code coverage and exclusions. • Several definitions were added, e.g., qualified personnel, relief device, safe location (for venting of gas), and valve proving system (VPS). • Several definitions were clarified, e.g., biogas (removed the heating content reference), hazardous area (harmonized with applicable codes), sludge holding tank, stand-alone membrane gasholder, tank-mounted membrane gasholders, and test firing (firing valve). • Compliance with the requirements of this Code for the installation at landfills upstream of the main inlet valve on the vacuum side of the blower has been removed from the scope of this Code. • Flexible metallic hose was allowed to be used to connect piping to other than appliances. • The requirement for a lock-up positive shut-off pressure regulator upstream of an appliance valve train was removed from Code. • The requirement for a flame arrester upstream of the relief valve on a gas storage container that is designed to store gas at a pressure above 100 kPag (14.5 psig)has been removed. • Examples for hazardous area were expanded to include odour control, equipment, components open-type gas compressors, or blowers. • Requirement of having an automatic safety shut-off valve certified to ANSI Z21.21/CSA 6.5 and marked C/I to shut-off the landfill gas supply to a waste gas burner that is not equipped with safety shut-off valve(s) was added to the Code. • Landfill pipe slope percentage was removed from the Code. • Testing method for membrane gasholders used in biogas installation has been modified. • Some of the revisions in Annexes include revised requirements for pressure test point (Clause D.2.8), manual shutoff valves (Clause D.2.11.1), and valve proving system (Clause D.2.16), clarified requirements when a test firing valve (Clause D.2.11.9) or a check valve (Clause D.3.4) might not be required, etc. This Code 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. This Code has been approved by the American National Standards Institute (ANSI) as an American National Standard. Scope 1.1 General 1.1.1 This Code applies to the installation of systems for the production, handling, storage, and utilization of digester gas in newly constructed wastewater treatment plants, as well as additions to and upgrading of existing systems. 1.1.2 This Code applies to the installation of systems for the production, handling, and utilization of landfill gas in newly constructed landfill gas systems, as well as additions to and upgrading of existing systems and temporary systems. 1.1.3 This Code does not apply to any infrastructure of a landfill upstream of the main inlet valve on the vacuum side of the blower. 1.1.4 This Code applies to the installation of systems for the production, handling, storage, and utilization of biogas in newly constructed biogas systems, as well as additions to and upgrading of existing systems. 1.1.5 This Code applies to piping systems in which the maximum operating pressures for piping used in digester systems, landfill gas systems, or biogas systems do not exceed 860 kPag (125 psig) for piping installed outdoors or 450 kPag (65 psig) for piping installed indoors. 1.1.6 This Code applies to the safety aspects of the operation and maintenance for handling, storage, and utilization of digester gas in wastewater treatment plants or landfill gas at landfill sites or biogas in biogas systems. Note: This Code does not apply to substrate storage, long-term digestate storage, or pilot scale and research digesters in biogas systems. 1.1.7 This Code applies to existing digester gas and landfill gas systems where, in the opinion of the authority having jurisdiction, a hazard or potential hazard exists. 1.1.8 Within the scope of Clauses 1.1.1to 1.1.6, there might be provisions not covered in this Code, in which case the applicable provisions of the authority having jurisdiction are to apply. 1.1.9 Renewable natural gas is excluded from this Code. 1.2 Summary Annex G gives a clause-by-clause summary of this Code. 1.3 Terminology In this Code, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; "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 Code. 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. 1.4 Dual dimensions 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.


CSA/ANSI B149.6-2020

Code for digester gas, landfill gas, and biogas generation and utilization

Preface This is the second edition of CSA/ANSI B149.6, Code for digester gas, landfill gas, and biogas generation and utilization. It supersedes the previous edition published in 2015. The major changes to this edition include the following: • The Scope was amended to clarify code coverage and exclusions. • Several definitions were added, e.g., qualified personnel, relief device, safe location (for venting of gas), and valve proving system (VPS). • Several definitions were clarified, e.g., biogas (removed the heating content reference), hazardous area (harmonized with applicable codes), sludge holding tank, stand-alone membrane gasholder, tank-mounted membrane gasholders, and test firing (firing valve). • Compliance with the requirements of this Code for the installation at landfills upstream of the main inlet valve on the vacuum side of the blower has been removed from the scope of this Code. • Flexible metallic hose was allowed to be used to connect piping to other than appliances. • The requirement for a lock-up positive shut-off pressure regulator upstream of an appliance valve train was removed from Code. • The requirement for a flame arrester upstream of the relief valve on a gas storage container that is designed to store gas at a pressure above 100 kPag (14.5 psig)has been removed. • Examples for hazardous area were expanded to include odour control, equipment, components open-type gas compressors, or blowers. • Requirement of having an automatic safety shut-off valve certified to ANSI Z21.21/CSA 6.5 and marked C/I to shut-off the landfill gas supply to a waste gas burner that is not equipped with safety shut-off valve(s) was added to the Code. • Landfill pipe slope percentage was removed from the Code. • Testing method for membrane gasholders used in biogas installation has been modified. • Some of the revisions in Annexes include revised requirements for pressure test point (Clause D.2.8), manual shutoff valves (Clause D.2.11.1), and valve proving system (Clause D.2.16), clarified requirements when a test firing valve (Clause D.2.11.9) or a check valve (Clause D.3.4) might not be required, etc. This Code 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. This Code has been approved by the American National Standards Institute (ANSI) as an American National Standard. Scope 1.1 General 1.1.1 This Code applies to the installation of systems for the production, handling, storage, and utilization of digester gas in newly constructed wastewater treatment plants, as well as additions to and upgrading of existing systems. 1.1.2 This Code applies to the installation of systems for the production, handling, and utilization of landfill gas in newly constructed landfill gas systems, as well as additions to and upgrading of existing systems and temporary systems. 1.1.3 This Code does not apply to any infrastructure of a landfill upstream of the main inlet valve on the vacuum side of the blower. 1.1.4 This Code applies to the installation of systems for the production, handling, storage, and utilization of biogas in newly constructed biogas systems, as well as additions to and upgrading of existing systems. 1.1.5 This Code applies to piping systems in which the maximum operating pressures for piping used in digester systems, landfill gas systems, or biogas systems do not exceed 860 kPag (125 psig) for piping installed outdoors or 450 kPag (65 psig) for piping installed indoors. 1.1.6 This Code applies to the safety aspects of the operation and maintenance for handling, storage, and utilization of digester gas in wastewater treatment plants or landfill gas at landfill sites or biogas in biogas systems. Note: This Code does not apply to substrate storage, long-term digestate storage, or pilot scale and research digesters in biogas systems. 1.1.7 This Code applies to existing digester gas and landfill gas systems where, in the opinion of the authority having jurisdiction, a hazard or potential hazard exists. 1.1.8 Within the scope of Clauses 1.1.1to 1.1.6, there might be provisions not covered in this Code, in which case the applicable provisions of the authority having jurisdiction are to apply. 1.1.9 Renewable natural gas is excluded from this Code. 1.2 Summary Annex G gives a clause-by-clause summary of this Code. 1.3 Terminology In this Code, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; "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 Code. 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. 1.4 Dual dimensions 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.


CSA Z462-2021

Workplace electrical safety

Preface This is the fifth edition of CSA Z462, Workplace electrical safety . It supersedes the previous editions published in 2018, 2015, 2012, and 2008. This Standard is based on NFPA 70E, Standard for Electrical Safety for the Workplace, and has been harmonized with Parts I, II, and III of the Canadian Electrical Code; CSA Z460, Control of hazardous energy — Lockout and other methods; and CSA M421, Use of electricity in mines. This revised edition of CSA Z462 has been developed by CSA Group from the original edition as promulgated by the National Fire Protection Association. In addition to its initial source, it includes significant revisions by CSA Group. This Standard is fully the responsibility of CSA Group. The NFPA, holder of the copyright in this edition, takes no responsibility for any portion thereof. This Standard specifies requirements for and provides guidance on safety management systems, safe work procedures, and selection of personal protective equipment and other safety devices for persons exposed to hazards associated with energized electrical equipment. In addition, this Standard sets out criteria for the identification and training of qualified electrical workers and for determination of hazardous work to be performed only by those qualified individuals. By permission of the National Fire Protection Association, many of the clauses, tables, and figures in this Standard have been copied from NFPA 70E. CSA Group wishes to thank the NFPA for its support throughout the development of this Standard. The following is an overview of the major revisions to the 2021 edition: a) definitions for "normal operation", "policy", "procedure", "process", and "program" have been added (Clause 3); b) a requirement for employers to create and document an electrical safety policy has been added (Clause 4.1.5); c) Several organizational changes were made, including i) relocation of content into Clause 4.1 to create a more complete listing of the general requirements for electrical-safety related work practices (Clauses 4.1.6, 4.1.7.8.4, 4.1.11.4, and 4.1.12.1) ii) relocation of content in Clause 4.3 to create a more logical flow; d) the term "normal operating condition" and its meaning have been modified. The term now appears as "normal equipment condition" (Clause 4.1.7.8.4, and definition of "normal operation" in Clause 3); e) additional means of training were added to recognize that training may be achieved by any of several method provided that it achieves specific measurable outcomes (Clause 4.1.8.1.5); f) the minimum threshold for potentially-hazardous energy was changed from 30 V to 30 V ac or 60 V dc (Clauses 4.1.6.1, 4.1.6.2.3, 4.1.11.5, and 4.3.7.4.8); g) a new method for selecting arc-flash PPE for ac voltages has been added (Clauses 4.3.5.5, 4.3.5.7, 4.3.7.3.15.2, 4.3.7.3.15.4, B.2, H.1, and H.2, Annex V, and Tables 6C and H.1); h) added guidance on methods that may be used to reduce likelihood of occurrence of an arcing event or the severity of exposure when incident energy is greater than the arc rating of commercially available arc-rated PPE (Clause 4.3.7.3.1); i) added Table 4A, which provides voltage ratings for various classes of rubber insulating gloves. The previous Table 4 is now Table 4B; j) Table 6A has been modified with several changes to the equipment categories and a change to the associated arc flash PPE category for 600 V switchgear; k) Table 6C has been modified with additions of high-visibility apparel and hand protection methods and a new arc flash PPE category 5 has been added for arc-rated clothing up to 75 cal/cm2; l) Clause 5 has been completely rewritten; m) Table A.1 has been completely rewritten; n) an example of a job safety planning checklist has been added in Annex I (Figure I.2); o) Annex O has been largely rewritten to increase clarity, provide more methods to reduce incident energy, and provide further options for safety by design; p) Annex P has been added to provide guidance on electrical switching and isolation; and q) Annex T has been added to provide guidance on temporary protective grounding. 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 This Standard specifies requirements for workplace electrical safety necessary for the practical safeguarding of workers during activities such as the installation, removal, inspection, operation, maintenance, and demolition of electric conductors and electric equipment, as well as work in proximity of energized electrical equipment. 1.2 Application While it can be applied by organizations of any type or size, this Standard does not cover: a) installations in ships, watercraft other than floating buildings, railway rolling stock, aircraft, and automotive vehicles other than mobile homes and recreational vehicles; b) installations of railways for the generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signalling and communications; c) installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations; and d) installations under the exclusive control of an electric utility when such installations i) consist of service drops or service laterals, and associated metering; ii) are located in legally established easements or rights-of-way designated or recognized by public service commissions, utility commissions, or other regulatory agencies having jurisdiction for such installations; or iii) are on property owned or leased by the electric utility for communications or for metering, generation, control, transformation, transmission, or distribution of electric energy. 1.3 Suitability It is the responsibility of the users of this Standard to judge its suitability for their particular purpose (see Note 2 to the Preface). 1.4 Use with related standards and regulations This Standard is intended for use with Parts I, II, and III of the Canadian Electrical Code and other related Canadian workplace electrical safety standards (e.g., CSA M421 and CSA Z460), and should be used with such standards. In addition, users of this Standard should always refer to provincial, territorial, and federal safety regulations that have jurisdiction over their work facility, contract job site, or profession. 1.5 Organization of this Standard The requirements of this Standard are organized in three main clauses and one Annex, as shown in Figure 1. Annexes A to U, W, and X do not specify requirements and are included for information only. 1.6 Measurements 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. 1.7 Terminology 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.


CSA C22.1-2021

Canadian Electrical Code, Part I (25th Edition), Safety Standard for Electrical Installations

Preface This twenty-fifth edition of the Canadian Electrical Code, Part I , was approved by the Committee on the Canadian Electrical Code, Part I, and by the Regulatory Authority Committee at their June 2020 meetings. This twenty-fifth edition supersedes the previous editions, published in 2018, 2015, 2012, 2009, 2006, 2002, 1998, 1994, 1990, 1986, 1982, 1978, 1975, 1972, 1969, 1966, 1962, 1958, 1953, 1947, 1939, 1935, 1930, and 1927. This edition contains important revisions to many Sections. Section 64 features a new Subsection governing installation of energy storage systems and Rules for functionally-grounded renewable energy systems. Several important changes appear in Section 26, including a new requirement for ground fault circuit interrupter protection for all 15 A and 20 A receptacles located outdoors within 2.5 m of grade. New requirements in support of climate change adaptation appear in several Sections of the Code. Section 22 now contains a new Subsection for farm buildings housing livestock, as well as revised Rules for equipment in Category 1 and 2 locations. Other significant revisions in this edition include the following: • redundant or out-of-date requirements, such as the Rules for open wiring, have been removed; • the definition for "Voltage — Low voltage" has been revised in Section 0; • clarification has been provided on impedance grounded system operation under fault condition in Section 10; • new requirements for electrical equipment installed near roof decking systems have been added in Section 12; • load calculations and equipment layout for recreational vehicle lots have been updated in Section 72; • Table 19 has been completely reorganized, simplified, and shortened; • Annexes A.1 and A.2 of Appendix A have been removed and are now hosted online; • Appendix E has been deleted; and • the Index has been deleted in conformance with CSA Group’s drafting and editorial requirements. Many of the changes in this edition were developed by cross-functional working groups. Their work is gratefully acknowledged. This Code 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 This Code applies to all electrical work and electrical equipment operating or intended to operate at all voltages in electrical installations for buildings, structures, and premises, including factory-built relocatable and non-relocatable structures, and self-propelled marine vessels stationary for periods exceeding five months and connected to a shore supply of electricity continuously or from time to time, with the following exceptions: a) installations or equipment employed by an electric, communication, or community antenna distribution system utility in the exercise of its function as a utility, as recognized by the regulatory authority having jurisdiction, and located outdoors or in buildings or sections of buildings used for that purpose; b) equipment and facilities that are used in the operation of an electric railway and are supplied exclusively from circuits that supply the motive power; c) installations or equipment used for railway signalling and railway communication purposes, and located outdoors or in buildings or sections of buildings used exclusively for such installations; d) aircraft; and e) electrical systems in ships that are regulated under Transport Canada. For mines and quarry applications, see also CSA M421. This Code and any standards referenced in it do not make or imply any assurance or guarantee by the authority adopting this Code with respect to life expectancy, durability, or operating performance of equipment and materials so referenced.


CSA C22.2 No. 286-2017

C22.2 NO. 286-17 - Industrial control panels and assemblies

Preface

This is the second edition of C22.2 No. 286, Industrial control panels and assemblies, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code, Part I. It supersedes the previous edition published in 2015.

This edition incorporates a new clause for electrical spacings and a new clause for testing requirements that addresses temperature, dielectric strength, and impact testing. Table 11 has been significantly expanded and new Tables 16 through 20 have been added. In addition, numerous edits have been performed throughout the document to provide additional information and to clarify certain requirements.

For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0, General Requirements - Canadian Electrical Code, Part II.

Scope

1.1
This Standard applies to industrial control panels and assemblies rated at not more than 1500 V, intended to be installed and used in non-hazardous locations in accordance with the rules of the Canadian Electrical Code, Part I.

Notes:

1) Examples of industrial control panels and assemblies covered by this Standard include motor control panels, process control equipment panels, heating panels, programmable control panels, heating and cooling equipment control panels, etc.

2) The term control as used throughout this Standard applies to both starters and controllers.

3) Electrical instruments that can be included as part of control equipment such as meters, are not covered by this Standard.

1.2
The industrial control panels and assemblies covered by this Standard are intended for use in an ambient temperature of 0 to 40 C. Additional investigation of the equipment will be required when equipment is to be used in an ambient temperature outside of this range.

1.3
This Standard does not apply to equipment or modifications to equipment covered by other CSA Standards, such as:

a) power supplies;

b) automatic transfer switches;

c) elevator equipment;

d) enclosed switches;

e) switchgear;

f) line isolation monitors;

g) panelboards and custom panelboards;

h) hazardous location equipment;

i) hydro-massage equipment;

j) power factor correction capacitor banks;

k) fire pump controllers;

l) assemblies of equipment intended solely for the distribution of power; and

m) motor control centre sections.

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.


CSA B51-2019

B51-14 - Boiler, pressure vessel, and pressure piping code

Preface This is the nineteenth edition of CSA B51, Boiler, pressure vessel, and pressure piping code. It supersedes the previous editions published in 2014, 2009, 2003, 1997, 1995, 1991, 1986, 1981, 1975, 1972, 1969, 1965, 1960, 1957, 1955, 1951, 1945, and 1939. In keeping with CSA Group’s goal of harmonizing its standards with those of other countries to the greatest extent possible, CSA’s Technical Committee on Boilers and Pressure Vessels and its Subcommittees have, in the course of developing this Standard, worked closely with the National Board of Boiler and Pressure Vessel Inspectors in the United States and with the American Society of Mechanical Engineers (ASME) committees responsible for producing the National Board Inspection Code and ASME’s Boiler and Pressure Vessel Code. There are three parts to this Standard: a) Part 1 contains requirements for boilers, pressure vessels, pressure piping, and fittings. It is intended mainly to fulfill two objectives: first, to promote safe design, construction, installation, operation, inspection, testing, and repair practices; and second, to facilitate adoption of uniform requirements by Canadian jurisdictions. b) Part 2 contains requirements for high-pressure cylinders for the on-board storage of natural gas, blends of natural gas and hydrogen (hydrogen blends), and hydrogen as fuels for automotive vehicles. It has been harmonized with International Organization for Standardization (ISO) Standard 11439:2013, Gas cylinders — High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles. In addition, the CSA Subcommittee responsible for developing Part 2 has consulted with the American National Standards Institute (ANSI) committees responsible for developing CSA/ANSI NGV 2-2016, Compressed natural gas vehicle fuel containers, and CSA/ANSI HGV 2-2014, Compressed hydrogen gas vehicle fuel containers. The members of these two committees are dedicated to harmonizing their standards as far as circumstances allow. c) Part 3 contains requirements for compressed natural gas and hydrogen refuelling station pressure piping systems and ground storage vessels. These requirements have been allotted a separate part of the Standard to emphasize the differences between them and the requirements in Part 1, thereby facilitating their application. This Standard has undergone substantial technical and editorial revisions since the previous edition in 2014. Significant changes to Part 1 include the following: • addition of the following definitions in Clause 3: – "high-energy steam (HES) piping systems"; and – "mechanical joint"; • addition of Clause 4.3.5 on Canadian Registration Numbers (CRNs); • revision of Clause 4.6 on manufacturer’s data reports, including a revised Clause 4.6.1 and a new Clause 4.6.6; • revision of Clause 4.8.2 on fabrication inspection; • deletion of Clause 4.15.1 on general requirements for piping; • revision of Clause 5.1.1 on nameplate stamping; • addition of Clause 6.3.4.7 on boiler installation clearances; • addition of Clause 6.3.6 on boiler loadings; • revision of Clause 6.6 on thermal fluid heaters and piping; • addition of Clause 7.1.5 on the use of Part 5 of Section VIII, Division 2, of the ASME Code; • addition of Clause 7.8 on pressure vessels designed and constructed using cold-stretch technology; • revision of Clause 8 on piping and fittings, including the addition of Clauses 8.6 and 8.7; • addition of Clause 12.1.1 on general requirements for pressure relief devices; • revision of Clause 12.2.2 on the installation of pressure relief devices; • revision of Clause 12.5.3 on periodic visual inspection of pressure relief devices; • revision of Clause 12.7 on servicing of reclosing pressure relief devices, including the addition of Clauses 12.7.2.2 on ANSI/UL 132 pressure relief valves (PRVs) and 12.7.3.2 on testing after servicing is complete; • addition of Clause 12.11 on CSA B149 series propane service pressure relief valves (PRVs); • addition of Clause 13.4 on high-energy steam (HES) piping systems; • revision of Table 5 on maximum in-service testing and service intervals; • revision of Annex C on guidelines for safety valve, relief valve, and safety relief valve repair organizations; • revision of Annex D sample forms; • revision of Annex G on automotive propane vessel standards; • revision of Annex I on historical boilers; • revision of Annex J on requirements regarding the use of finite element analysis (FEA) to support a pressure equipment design submission, including Clause J.3 on special design equipment and Clause J.6.3 on turn angles; • addition of Annex K on requirements for pressure vessels designed and constructed using cold- stretch technology; and • addition of Annex L on condition assessments for high-energy steam (HES) piping systems. Significant changes to Part 2 include the following: • revision of Clause 6.3.2.3 on tensile tests for steel excluding than stainless steel; • revision of Clause 6.3.6 on plastic liners; • revision of Clause 7.3.1 on general requirements for manufacturing and production tests; • revision of Clause 7.4.1 on material tests; • deletion of Clause 8.6.8 on high-temperature creep test; • deletion of Clause 10.7.4 on boss torque test; • revision of Clause 14.13 on ambient temperature pressure-cycling test; • revision of Clause 14.14 on extreme-temperature pressure-cycling test; • revision of Clause 14.16 on penetration test; • revision of Clause 14.17 on flaw tolerance test; • deletion of Clause 14.18 on high-temperature creep test; • revision of renumbered Clause 14.18 on accelerated stress rupture test; • revision of Clause 14.19 on drop test; • revision of Clause 14.21.4 on pressure cycle and pressure hold; and • deletion of Clause 14.24 on boss torque test. The users of this Standard should note that it is a recommendatory document only and does not have the force of law except where it has been officially adopted by a Canadian jurisdiction. Users should also note that adoption does not necessarily mean that the Standard has been adopted unchanged. For example, a jurisdiction may decide to make an informative annex normative. In addition, owners and users of cylinders designed to the requirements of Part 2 should note that the safe operation of such cylinders requires, first, compliance with the service conditions specified by the manufacturer, and second, use of the cylinders only during the service life specified by the manufacturer. Each cylinder is marked with an expiry date, and owners and users are responsible for ensuring that a cylinder is not used after that date. The Technical Committee intends to meet periodically to review this Standard and, if necessary, to revise it to meet changing conditions and maintain uniformity of practice throughout Canada. The Technical Committee supports the use of the National Board Inspection Code. It is the responsibility of users of this Standard to be aware that applicable local regulations can take precedence over the requirements of that Code. 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. -------------------------------------------------------------------------------------------------------------------------------- B51-19, Part 1 - General requirements for boilers, pressure vessels, and pressure piping Scope 1.1 Except as indicated in Clause 1.2, Part 1 of this Standard applies to all boilers, pressure vessels, pressure piping, and fittings, as provided for by the Act (as defined in Clause 3) and identified in Part 1 of this Standard. Notes: 1) It is possible that the size limitations specified in provincial or territorial statutes or regulations will differ from those specified in Part 1 of this Standard. The applicable regulatory authority should be consulted. 2) The pressures specified in Part 1 of this Standard are gauge pressures above atmospheric pressure. 3) This Standard applies to all boilers, pressure vessels, pressure piping, and fittings installed subsequent to its adoption. 1.2 Requirements for compressed natural gas cylinders and refuelling station pressure piping systems and containers are covered in Parts 2 and 3 of this Standard. 1.3 This Standard does not apply to a) pressure-retaining components in hydraulic elevators; b) pressure-containment devices for gas-filled switchgear and controlgear; and c) pressure vessels for the transportation of dangerous goods regulated by Transport Canada. 1.4 Where a clause in Part 1 of this Standard is at variance with a code or standard referenced in Part 1 of this Standard, the requirements of Part 1 of this Standard govern. 1.5 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. 1.6 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. Nominal pipe sizes are expressed in non- dimensional terms. -------------------------------------------------------------------------------------------------------------------------------- B51-19, Part 2 - High-pressure cylinders for the on-board storage of natural gas and hydrogen as fuels for automotive vehicles Scope 1.1 Part 2 of this Standard specifies minimum requirements for serially produced lightweight refillable gas cylinders, both original equipment and conversions, having a water capacity exceeding 20 L (0.71 ft3) but not exceeding 1000 L (35.3 ft3). Part 2 of this Standard applies only to cylinders for the on-board storage of high-pressure compressed natural gas and/or compressed hydrogen as fuels for automotive vehicles to which the cylinders are to be fixed. Cylinders may be of any material (steel, aluminum, or non-metallic) and constructed in accordance with any design or method of manufacture suitable for the specified service conditions. 1.2 The cylinders covered by Part 2 of this Standard are designated as follows: a) Type 1 — metal; b) Type 2 — metal liner reinforced with resin-impregnated continuous filament (hoop-wrapped); c) Type 3 — metal liner reinforced with resin-impregnated continuous filament (fully wrapped); and d) Type 4 — non-metallic liner with resin-impregnated continuous filament (all-composite). 1.3 The service conditions to which the cylinders are subjected are specified in Clause 4. Part 2 of this Standard is based on a working pressure settled at 15 °C (59°F), with a maximum filling pressure of 1.25 times the working pressure. The service life of a cylinder is defined by the manufacturer and can vary with different applications. This Standard’s definition of service life is based on filling a cylinder 750 times a year. The maximum service life of Type 2, Type 3, and Type 4 cylinders is 20 years. For all cylinders, a "safe life" design principle is used. For metal and metal-lined cylinders, the cylinder life is based on the rate of fatigue crack growth. Ultrasonic or equivalent inspection of each cylinder or liner is necessary to ensure that there are no flaws that exceed the maximum allowable size determined by fracture mechanics. This approach optimizes the design and manufacture of lightweight cylinders for natural gas vehicle service. For all-composite cylinders with non-metallic non-load-bearing liners, safe life is ensured by appropriate design methods, design qualification testing, and manufacturing controls. 1.4 Part 2 of this Standard does not cover Type 1 or Type 2 welded metal cylinders or liners. 1.5 Where a clause in Part 2 of this Standard is at variance with codes or standards referenced in Part 2 of this Standard, the requirements of Part 2 of this Standard govern. 1.6 Type 1 steel cylinders may be requalified for further service in accordance with the procedure described in Annex B. 1.7 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. 1.8 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. -------------------------------------------------------------------------------------------------------------------------------- B51-19, Part 3 - Compressed natural gas and hydrogen refuelling station pressure piping systems and ground storage vessels Scope 1.1 1.1.1 The pressure piping systems covered in Part 3 of this Standard are systems used in compressed natural gas (CNG) and hydrogen refueling stations a) between the termination of the utility’s piping, usually at the meter, and the inlet to the compressor assembly if the design pressure exceeds 414 kPa (60 psi); and b) from the inlet to the compressor assembly through to the dispenser nozzle, except for the mechanical parts of the compressor and any subsystems designed for 414 kPa (60 psi) or less. 1.1.2 The ground storage vessels covered in Part 3 of this Standard are pressure vessels that are installed at CNG and hydrogen refueling stations and intended to store CNG or hydrogen at pressure for delivery to vehicle fuel tanks. 1.2 Where a clause in Part 3 of this Standard is at variance with codes or standards referenced in Part 3 of this Standard, the requirements of Part 3 of this Standard govern. 1.3 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. 1.4 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.


AAMA/WDMA/CSA 101/I.S.2/A440-2017

North American Fenestration Standard / Specification for windows, doors, and skylights

Preface

This is the fourth edition of AAMA/WDMA/CSA 101/I.S.2/A440 — North American Fenestration Standard/Specification for windows, doors, and skylights. It supersedes the previous edition published in 2011 under the same title. It is jointly published and maintained by the American Architectural Manufacturers Association (AAMA), the Window & Door Manufacturers Association (WDMA), and CSA Group.

The following significant changes from the previous edition of this Standard/Specification have been made:

a) User Guide to AAMA/WDMA/CSA 101/I.S.2/A440 has been integrated into this Standard/ Specification.

b) Labels have been added to clause titles to indicate the type of performance requirement addressed by the clause.

This Standard/Specification was developed as an advisory document and is published as a public service. AAMA, WDMA, CSA Group, the individual members of the CSA Technical Committee on Performance Standard for Windows, and the U.S.A./Canada Joint Document Management Group (JDMG) disclaim all liability for the use, application, or adaptation of the material published in this Standard/Specification.

Intended users of this Standard/Specification include building officials, manufacturers, architects, engineers, consumers, builders, contractors, trade associations, test laboratories, specifiers, product evaluation and certification agencies, and government agencies. Two fundamental applications for this Standard/Specification are product comparison and code compliance. AAMA, WDMA and CSA Group intend for this Standard/Specification to be referenced in U.S. International Building Codes and in the National Building Code of Canada. This Standard/Specification presents provisions addressing fenestration product requirements, under the control of the unit manufacturer, contained in those codes.

CSA A440S1 Canadian Supplement to AAMA/WDMA/CSA 101/I.S.2/A440, NAFS — North American Standard/Specification for windows, doors, and skylights provides additional requirements to this Standard/Specification for compliance in Canada. The Canadian Supplement is considered suitable for use for conformity assessment within the stated scope of the Standard/Specification. The Canadian Supplement was prepared by the CSA Group Technical Committee on the Performance Standard for Windows, under the jurisdiction of the Strategic Steering Committee on Building Products and Systems, and has been formally approved by the Technical Committee.

Scope

1.1 General

This fenestration Standard/Specification applies to both operating and fixed, new construction and replacement windows, doors, SSPs, TDDs, roof windows, and unit skylights installed into exterior building envelopes. This fenestration Standard/Specification establishes material-neutral, minimum, and optional performance requirements for windows, doors, SSPs, TDDs, roof windows, and unit skylights. This Standard/Specification concerns itself with the determination of Performance Grade (PG), design pressure (DP), and related performance ratings for windows, doors, SSPs, TDDs, roof windows, and unit skylights.

Performance requirements are used in this Standard/Specification when possible. Prescriptive requirements are used when necessary. When products are tested to the gateway requirements, or to the gateway and optional requirements, a rating is determined and a test report may be issued.

Certification procedures are not part of this Standard/Specification. This Standard/Specification applies to testing and rating products. The tested rating applies to products of identical construction, with width and height less than or equal to the tested size.

1.2 Outside of scope

Various systems have been developed or are proposed for determining a product energy rating based on such factors as U-factor, solar heat gain coefficient, condensation resistance, and visible transmittance (visible light transmission). These rating systems are beyond the scope of this Standard/Specification.

Fenestration products excluded from the scope of this Standard/Specification include

a) interior windows, interior accessory windows (IAWs), and interior doors;

b) vehicular-access doors (garage doors) (see ANSI/DASMA 105, ANSI/DASMA 108, ANSI/DASMA 109, ANSI/DASMA 115, or other applicable DASMA Specifications);

c) roof-mounted smoke and heat-relief vents (see FM 4430);

d) sloped glazing (other than unit skylights or roof windows) (see AAMA TIR A7);

e) curtain walls and storefronts (see AAMA MCWM-1);

f) commercial entrance systems (see AAMA SFM-1);

g) sunrooms (see AAMA/NPEA/NSA 2100);

h) revolving doors; and

i) commercial steel doors rated per ANSI/SDI A250.8.

1.3 Terminology

In this Standard/Specification, 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/Specification; should is used to express a recommendation or that which is advised but not required; shall be permitted to be is used to express an option or that which is permissible within the limits of the Standard/Specification; and can is used to express possibility or capability.

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 shall be permitted to be written as requirements. Legends to equations and figures are considered requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

The Preface, Clause 0, commentary and any notes not attached to figures and tables are non-mandatory.

1.4 Units of measurement

The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

1.5 Clause labels

For the convenience of the user, clauses are labelled to indicate the type of performance requirement addressed by the clause.


CSA SPE-1000-2013

SPE-1000-13 - Model code for the field evaluation of electrical equipment

Preface

This is the fourth edition of SPE-1000, Model Code for the field evaluation of electrical equipment. It supersedes previous editions published in 2009, 1999, and 1994.

Significant changes in this edition include new requirements for the field evaluation of energy usage metering devices, high-voltage equipment, photovoltaic modules, wind turbines, inverters, and industrial control equipment.

This Model Code is based upon guidelines for special inspections. These guidelines have been in effect for many years with a good safety record. The Canadian Advisory Council on Electrical Safety strongly supports the continuation of special inspections of electrical equipment, with the stipulation that the requirements be formally published.

Scope

1.1

1.1.1
This Model Code provides marking and test/construction requirements for the field evaluation of electrical equipment by an inspection body, where certification of that equipment is impracticable or otherwise unavailable.

1.1.2
Field-evaluated equipment found to be in conformity with the requirements of this Model Code is considered to be acceptable to the AHJ.

1.1.3
Notwithstanding the requirements of Clauses 1.1.1 and 1.1.2, field evaluation is not intended to serve as a substitute for certification.
1.2
The following are examples of where this Model Code applies:
a) custom-built equipment for special applications;
b) equipment manufactured on a non-repetitive basis;
c) equipment sold in quantities of not more than 500 on a national basis, per model, per year, per inspection body;
d) equipment not obtainable as certified under a regular certification program;
e) equipment already installed or ready for use on-site and awaiting acceptance by the AHJ;
f) complete systems or subassemblies that are all available for examination and testing during the evaluation process; and
g) other electrical equipment as determined by the AHJ.

Note: Where it is unclear or there is uncertainty as to whether the electrical equipment is to be field evaluated under the classifications of this Clause, the AHJ should be consulted for clarification.

1.3
This Model Code applies where the requirements are supplemented by requirements of particular equipment Standards, where referenced, and the installation requirements of the Canadian Electrical Code, Part I, as applicable.

1.4
This Model Code applies to equipment that may be evaluated at a client's facilities or at other specified locations, including the location of equipment installation.

1.5
This Model Code is not intended to apply to the re-evaluation of equipment that has been rejected due to the results of a previous evaluation conducted by a certification organization through any other existing certification service.

1.6
This Model Code does not apply to the field evaluation of
a) wire and cable products;
b) wiring devices;
c) equipment for use in hazardous locations;
d) medical electrical equipment and systems;
e) components* that will require further evaluation as part of a complete assembly, such as switches, relays, and timers;
f) equipment connected to line voltage in excess of 46 kV;
g) manlifts, elevators, climb assists and similar systems (other than their associated control panels); and
h) any equipment that is not permitted to be field evaluated as directed by an AHJ (such as air-cleaning equipment that intentionally produces ozone).

* Special inspection/field evaluation only applies to equipment that is capable of being connected to the supply in accordance with the Canadian Electrical Code, Part I.

1.7
General requirements applicable to this Model Code are given in CAN/CSA-C22.2 No. 0, General Requirements - Canadian Electrical Code, Part II.

1.8
In this Model Code, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with this Model Code; 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 this Model Code.

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.

1.9
In accordance with Clause 1.8, this Model Code has been written in mandatory language to facilitate its adoption where users of the Model Code or regulatory authority wish to do so.


CSA B149.3-2020

Code for the field approval of fuel-burning appliances and equipment

Preface This is the sixth edition of CSA B149.3, Code for the field approval of fuel-burning appliances and equipment. It supersedes the previous editions published in 2015, 2010, 2005, and 2000 by CSA Group (CSA) as CSA B149.3, and in 1989 by the Canadian Gas Association (CGA) as CAN/CGA-B149.3. This Code brings together for the convenience of users the applicable requirements for appliances and equipment, originally published as part of the CSA B149.1 and CSA B149.2 Codes. The major changes to this edition include the following: • title changed from "Code for the Field Approval of Fuel-Related Components on Appliances and Equipment" to "Code for the field approval of fuel-burning appliances and equipment"; • updated Scope (Clauses 1.2, 1.5, and 1.9); • updated reference publications (Clause 2); • updated definitions (Clause 3); • updated requirements and restructured pressure regulators clause (Clause 4); • updated requirements and restructured pilot supply clause (Clause 5); • updated requirements and restructured manual shut-off valves, manual isolation valves, and test firing valves clause (Clause 6); • updated requirements and restructured pilot burners clause (Clauses 7.2 and 7.3); • updated requirements for additional requirements for liquid propane valve trains (Clauses 9.1, 9.5, 9.7, 9.8, and 9.9); • updated requirements for applications, added section for multi-fuel burners (Clauses 10.1.6, 10.1.7, 10.1.8, 10.2, 10.3.1, 10.4, 10.9.3, 10.9.4, and 10.11); • updated requirements for safety controls (Clauses 12.1.4, 12.1.5, 12.4.1, 12.5.5, and 12.7.2.3); • updated requirements for rating plate (Clause 14); • updated requirements for "Additional requirements for process ovens, process furnaces, and atmosphere generators" (Clause 16.1); • added new Clause 17 for "Generators, compressors/pressure boosters, engines and turbines"; • added new Clause 18 for "Flare pilot", removed Annex, "Guidelines for flare pilot systems"; • added new Clause 19 for "Appliances in a complex and integrated facility"; • added new Clause 20 for "Additional requirements for portable appliances and equipment"; • revised recommended procedure for initial start-up of high input equipment (Clauses A.2, A.5, and A.6); • revised guidelines for electronic-type fuel air-ratio control (FARC) systems (Clause D.2); • added new Annex I for "Risk-based program for determining requirements for an appliance in a complex and integrated facility"; • added new Annex J for "Mobile outdoor food service unit"; and • added new Annex K for "Recommended requirements for automatic safety shutoff valves and automatic vent valves installed on gas turbines having capacities greater than 12.5 MMBtu/h (3.66 MW) and inlet pressures greater than 150 psi". This Code 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 Code contains the requirements for fuel-related components and accessories and their assembly on an appliance utilizing gas, downstream of the manual shut-off valve specified in Clause 6.18.2 of CSA B149.1. Clause 16 of this Code contains additional requirements for process ovens, including bakery ovens, process furnaces, and atmosphere generators operating at approximately atmospheric pressure and used by industry for the processing of materials. Recommended requirements for liquid and solid fuel-burning appliances are located in Annex G (liquids) and Annex H (solids). 1.2 This Code does not apply to a) installations in marine pipeline terminals; b) gas where used as a feedstock in petroleum refineries or chemical plants; c) gas designated for storage or handling, or both, at propane gas bulk plants; d) gas where used for natural gas for vehicles; e) a new appliance for which there is an approved Standard; f) a manually operated appliance with an input not exceeding 20 000 Btu/h (6 kW) used for industrial applications; and g) other fuels not covered in this Code and used in combination with gas. 1.3 When another fuel is used in the installation and in combination with gas, the safe operation of that fuel shall be approved. 1.4 Requirements contained herein apply only to that portion of an appliance using gas as defined in Clause 1.7, atmosphere gas, and reaction gas. 1.5 The requirements contained in this Code apply a) to new non-certified appliances and equipment of all inputs for which there is no approved Standard; b) when the upgrading, conversion or changes to the control system of a certified or non-certified appliance is required, unless a certified conversion kit for that appliance is utilized; and c) to programmable logic controllers or microprocessor-based controls used for flame safety and fuel/air ratio control. 1.6 The requirements contained in this Code may be used to replace or supplement an approved Standard with the permission of the authority having jurisdiction. 1.7 When the term "gas" is used, the requirements of this Code include, and apply equally to, any of the following gases or mixtures of them: natural gas, manufactured gas, propane, propane air, propylene, butane (normal butane or isobutane), and butylene. 1.8 The values given in yard/pound units are the standard. The values given in parentheses are for information only. 1.9 When using digester gas, landfill gas or biogas, this Code is to be used in conjunction with CSA B149.6. 1.10 In this Code, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; "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 Code. 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.


CSA/ANSI HGV 2-2021

Compressed hydrogen gas vehicle fuel containers

Preface This is the second edition of CSA/ANSI HGV 2, Compressed hydrogen gas vehicle fuel containers . It supersedes the previous edition published in 2014. The major changes to this edition include the following: a) distinction between category A and B containers; b) inclusion of conformable container requirements; and c) addition of mechanical tests. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada. 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. This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Scope 1.1 General This Standard contains requirements for the material, design, manufacture, marking, and testing of serially produced, refillable Type HGV2 containers intended only for the storage of compressed hydrogen gas for on-road vehicle operation. These containers a) are to be permanently attached to the vehicle; b) have a capacity of up to 1000 L (35.4 ft3) water capacity; and c) have a nominal working pressure that does not exceed 70 MPa. 1.2 Container type 1.2.1 Type HGV 2 containers are designated as follows: a) Type 1: metal; b) Type 2: resin-impregnated continuous filament with metal liner with a minimum burst pressure of 125% of service pressure. The container is hoop-wrapped; c) Type 3: resin-impregnated continuous filament with metal liner. The container is full-wrapped; and d) Type 4: resin-impregnated continuous filament with a nonmetallic liner. 1.2.2 Conformable container types are designated as follows: a) CT1: container or assembly of a non-axisymmetric shape without a protective shell (i.e., outside wall containing gas pressure); b) CT2: container or assembly of non-axisymmetric shape within a full or partial protective shell that is acting as a shield and not directly assisting the pressure containing elements with containing gas pressure; and c) CT3: container or assembly of non-axisymmetric shape within a conformable protective shell that is acting as a shield and directly assisting the pressure containing elements with containing gas pressure. Note: The conformable container types are an additional identifier that is used in combination with the container type. A conformable tank is designated based on the design as a Type 1 (metal) to Type 4 (resin-impregnated continuous filament with a nonmetallic liner) with the additional conformable type identifier. For example, a Type 4 CT2 container would be required to meet the criteria for a Type 4 container as well as the criteria specified for a CT2 container. 1.3 Alternative construction or materials The construction of the containers, whether specifically covered by the various provisions of this Standard or not, is to be in accordance with reasonable concepts of safety, performance, and durability. All specifications as to construction set forth herein are to be satisfied by the construction actually prescribed or such other construction as will provide at least equivalent performance. 1.4 Units of measurement 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. 1.5 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user shall 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.


ANSI Logo

As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

CUSTOMER SERVICE
NEW YORK OFFICE
ANSI HEADQUARTERS