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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 C22.1-2018 Canadian Electrical Code

2018 Canadian Electrical Code, Part I (24th edition), Safety Standard for Electrical Installations

Preface

This twenty-fourth 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 2017 meetings in Halifax, Nova Scotia. This twenty-fourth edition supersedes the previous editions, published in 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 features important revisions to many Sections. Section 26 now mandates the use of tamper-resistant receptacles in additional areas where children may be present. Section 62 now requires ground fault circuit interrupter protection for heating devices and controls in proximity to tubs, sinks, and shower stalls.

Section 10 has been updated, reorganized, and significantly reduced in length. Requirements for power over ethernet systems have been added to Section 16, and requirements for marinas, wharves, and similar facilities have been substantially updated and reorganized in Section 78.

To address the increasing use of electric vehicles, Section 8 now formally recognizes energy management systems as a method of reducing the load on building services. Because lighting control devices associated with energy management or home automation require power to operate, Section 4 now requires that an identified conductor be provided for all devices controlling permanently installed luminaires.

Other revisions in this edition include the following:

ò in Section 26, Rules 26-400 to 26-726 have been reorganized and renumbered in order to group related concepts together and provide a more logical flow for the requirements;

ò in many Sections, the redundant use of the term ôapprovedö has been eliminated;

ò clarification has been provided on arc-fault circuit interrupter protection for bathrooms, washrooms, existing circuits, and circuits supplying carbon monoxide or smoke alarms;

ò requirements for dining area and refrigerator circuits have been clarified;

ò The terms ôjacketedö, ôinsulatedö, and ôcoveredö as applied to conductors have been clarified through a new definition of the term ôjacketö and a revised definition of the term ôconductorö in Section 0. As a result, the term ôconductorö has been replaced with ôinsulated conductorö in many Sections of the Code; and

ò Section 82 has been deleted as it covered a technology that is no longer in use.

Many of the changes in this edition were developed by cross-functional working groups. Their work is gratefully acknowledged.

General arrangement

The Code is divided into numbered Sections, each covering some main division of the work. Sections 0 to 16 and 26 are considered general sections, and the other sections supplement or amend the general sections. The Sections are divided into numbered Rules, with captions for easy reference, as follows:
  1. Numbering system - With the exception of Section 38, even numbers have been used throughout to identify Sections and Rules. Rule numbers consist of the Section number separated by a hyphen from the 3- or 4-digit figure. The intention in general is that odd numbers may be used for new Rules required by interim revisions. Due to the introduction of some new Rules and the deletion of some existing Rules during the revision of each edition, the Rule numbers for any particular requirement are not always the same in successive editions.

  2. Subdivision of Rules - Rules are subdivided in the manner illustrated by Rules 8-204 and 8-206, and the subdivisions are identified as follows:

    00-000     |   Rule

    (1)            |   Subrule

       (a)         |   Item

           (i)      |   item

             (A)   |   item

  3. Reference to other Rules, etc. - Where reference is made to two or more Rules (e.g., Rules 10-200 to 10-206), the first and last Rules mentioned are included in the reference. Where reference is made to a Subrule or Item in the same Rule, only the Subrule number and/or Item letter and the word ôSubruleö or ôItemö need be mentioned. If the reference is to another Rule or Section, then the Rule number and the word ôRuleö shall be stated (e.g., ôRule 10-200(3)ö and not ôSubrule (3) of Rule 10-200ö).
The principal changes that have been made between the 2015 edition of the Canadian Electrical Code, Part I, and this new edition, published in 2018, are marked in the text of the Code by the symbol delta in the margin. Users of the Code are advised that the change markers in the text are not intended to be all-inclusive and are provided as a convenience only; such markers cannot constitute a comprehensive guide to the reorganization or revision of the Code. Global revisions that improve the overall consistency and precision of Code language without affecting the interpretation of any specific Rule are not identified. Care must therefore be taken not to rely on the change markers to determine the current requirements of the Code. As always, users of the Code must consider the entire Code and any local amendments or interpretations.

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

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 Z462-2018

Workplace electrical safety

Preface

This is the fourth edition of CSA Z462, Workplace electrical safety. It supersedes the previous editions published in 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 ù 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.

In this 2018 edition, where a major change or addition to the previous edition of this Standard has been made, the clause, table, or figure affected is identified by the symbol delta in the margin. Users of this Standard are advised that the change markers in the text are not intended to be all-inclusive and are provided as a convenience only; such markers cannot constitute a comprehensive guide to the revisions made to this Standard. Care must therefore be taken not to rely on the change markers to determine the current requirements of this Standard. As always, users of this Standard must consider the entire Standard.

The following is an overview of the major revisions to the 2018 edition:

a) the definitions of arc flash hazard and shock hazard have been aligned with the definition of hazard (Clause 3);

b) Clause 4.1.4 includes a new general requirement that hazard elimination be the first priority in the implementation of safety-related work practices;

c) Clause 4.1.6 has several new electrical safety program requirements:

    i) the requirement to inspect newly installed or modified equipment has been added to Clause 4.1.6.2;

    ii) risk assessment has been revised in Clause 4.1.6.8.3 to include human error;

    iii) the hierarchy of risk control in Clause 4.1.6.8.4 has been moved into mandatory text;

    iv) the requirement to perform and document job safety planning has been added to Clause 4.1.6.9; and

    v) the requirement to investigate electrical incidents has been added to Clause 4.1.6.10;
d) the minimum threshold for potentially-hazardous energy has been reduced from 50 V to 30 V (Clauses 4.1.9.1, 4.1.9.5, 4.3.2.1, 4.3.2.2.3, 4.3.4.6, 4.3.6.1, 4.3.6.3.2, 4.3.6.6, and 4.3.6.7);

e) Clause 4.2 has been totally reorganized, including relocating all training and auditing requirements to Clause 4.1;

f) in Clause 4.3.4, shock risk assessment has been aligned with the arc flash risk assessment in Clause 4.3.5;

g) Table 2 (previously Table 4A) has been relocated from the arc flash PPE category method to the arc flash risk assessment in Clause 4.3.5;

h) Table 3 (previously Table H.2) has been relocated from Annex H to Clause 4.3.5 (arc flash risk assessment);

i) Annex F has been completely rewritten; and

j) Annex K has been updated.

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 divided into three main clauses, as shown in Figure 1. Annexes A to W 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 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.


ASME A112.18.2-2015/CSA B125.2-2015

ASME A112.18.2-2015/CSA B125.2-15 - Plumbing waste fittings

Preface

This is the third edition of ASME A112.18.2/CSA B125.2, Plumbing waste fittings. It supersedes the previous edition, published in 2011.

Together with ASME A112.18.1/CSA B125.1, Plumbing supply fittings, CSA B125.3, Plumbing fittings, and ASME A112.18.6/CSA B125.6, Flexible water connectors, this Standard forms a series to cover plumbing fittings.

Scope

1.1
This Standard covers plumbing waste fittings of sizes NPS-2 and smaller.

1.2
This Standard does not cover

(a) plumbing supply fittings, which are covered by ASME A112.18.1/CSA B125.1;

(b) other devices (e.g., temperature-actuated in-line mixing valves), which are covered by CSA B125.3 or other plumbing product standards; and

(c) flexible water connectors under continuous pressure, which are covered by ASME A112.18.6/CSA B125.6.

1.3
This Standard does not cover pipes and tubes or pipe and tube fittings that are downstream of the trap.

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 (nonmandatory) to define their application.

1.5
SI units are the units of record in Canada. In this Standard, the inch/pound units are shown in parentheses.

The values stated in each measurement system are equivalent in application; however, each system is to be used independently. Combining values from the two measurement systems can result in non-conformance with this Standard.

All references to gallons are to U.S. gallons.

For information on the conversion criteria used in this Standard, see Annex A.


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.


CSA B45.5-2017/IAPMO Z124-2017

CSA B45.5-17/IAPMO Z124-2017 - Plastic plumbing fixtures

Preface

This is the second edition of CSA B45.5/IAPMO Z124, Plastic plumbing fixtures. It supersedes the previous edition published in 2011.

This Standard replaces

a) CAN/CSA-B45.5-02, Plastic plumbing fixtures;

b) IAPMO/ANSI Z124.1.2-2005, Plastic Bathtub and Shower Units;

c) IAPMO/ANSI Z124.3-2005, Plastic Lavatories;

d) IAPMO/ANSI Z124.4-2006, Plastic Water Closet Bowls and Tanks;

e) IAPMO/ANSI Z124.6-2007, Plastic Sinks; and

f) IAPMO/ANSI Z124.9-2004, Plastic Urinal Fixtures.

Scope

1.1
This Standard covers plastic plumbing fixtures and specifies requirements for materials, construction, performance, testing, and markings.

1.2
This Standard covers the following plumbing fixtures:

a) bathtubs and combination tub/showers;

b) lavatories;

c) shower bases and shower stalls;

d) sinks:

    i) bar sinks;

    ii) kitchen sinks;

    iii) laundry sinks; and

    iv) service sinks;
e) urinals; and

f) water closets.

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
SI units are the units of record in Canada. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application; however, each system is to be used independently. Combining values from the two measurement systems can result in non-conformance with this Standard.

All references to gallons are to U.S. gallons.

For information on the conversion criteria used in this Standard, see Annex A.


CSA B651-2018

Accessible design for the built environment

Preface This is the fifth edition of CSA B651, Accessible design for the built environment. It supersedes the previous editions published in 2012 and 2004 under the same title, and the 1995 and 1990 editions published under the title, Barrier-free design. This edition of the Standard has been reformatted without the informative Commentary. The Commentary is now available in CSA B651HB-18, Accessible design for the built environment – Implementation Handbook. The technical requirements in this Standard are minimum levels. They represent a consensus of the Technical Committee members, who represent a broad spectrum of interests. The members are helped and encouraged by the public comments received as a result of the wide distribution of a draft at the public review stage. The Technical Committee on Accessibility has also produced two related Standards, CSA B651.1, Accessible design for automated banking machines, and CAN/CSA-B651.2, Accessible design for self-service interactive devices. The Technical Committee has also developed other Standards, including a) CSA B480, Customer service standard for people with disabilities; b) CSA B659, Inclusive design for an aging population; and c) the adoption, CAN/CSA-ISO IWA 18, Framework for integrated community-based life-long health and care services in aged societies. Significant changes to this edition include the following: a) expansion of requirements to accommodate the full range of wheeled mobility devices, including manual and powered wheelchairs, and scooters; b) updates to dimensions based on current data from anthropometric research; c) alignment of design requirements with the accessible design section of the National Building Code of Canada; d) updated requirements for exterior environments; and e) a new informative annex on trails and beach access routes. 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 Purpose This Standard specifies technical requirements on how to make buildings and the exterior built environment accessible and safely usable by persons with physical, sensory, or cognitive disabilities. 1.2 Application This Standard describes technical requirements that can be used in the design and construction of new facilities or exterior environments, or in modifications to existing facilities. This Standard does not address the application of the technical requirements. The extent to which these requirements have to be applied is the responsibility of other authorities having jurisdiction. 1.3 Dimensions This Standard contains minimum requirements based on adult dimensions. Dimensions are given in SI (metric) units (typically in millimetres) and, where converted from foot/ pound (imperial) units, have been rounded off with respect to critical dimensions. All dimensions in figures are given in millimetres and are measured to the centerline, unless otherwise specified. 1.4 Figures Figures are included for explanatory or illustrative purposes only and are not a mandatory part of the Standard. Figures are not to scale. If there is any difference between the text and figure (where provided), the text shall take precedence. 1.5 Annexes Annexes A to C provide additional information on topics considered in the Standard. Annex D provides guidance for the design of outdoor trails and beach access routes. Annex E contains references for accessible outdoor recreational environments, to supplement the information and guidance provided in Annex D. 1.6 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 s advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Text accompanying 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. 1.7 Large print Consistent with the recommendations of the CSA B651 series of standards, and for ease of reading the information and universal accessibility, this Standard has been printed in a 14 point font size.


CSA Z94.3-2020

Eye and face protectors

Preface This is the ninth edition of CSA Z94.3, Eye and face protectors. It supersedes the previous editions, published in 2015, 2007, 2002, 1999, 1992, 1988, 1982, and 1969. Major changes to this edition include the following: • ignition resistance requirements for plano eyewear have been clarified and refined (Clause 6.2); • the flammability requirements and testing were deleted (Clause 6.2); • revised automatic darkening welding filter requirements (Clause 6.5.4); • added guidance for aftermarket components or accessories(Clause 6.7); • revised the minimum frontal coverage for plano eyewear (Clause 6.8); • revised side protection requirements for plano eyewear (Clause 6.9); • added cover lenses and cover plates for Class 2 protectors (Clause 8.7); • revised speed of steel balls for impact resistance testing (Clause 12.2.1.3); • revised the procedure for angular dependence of luminous transmittance test for automatic welding filter lenses (Clause 12.15.3); • revised marking and user information for plano eyewear (Clause 13.1); • revised markings for prescription protective eyewear (Clause 15.6); • added design and testing requirements for photochromic and polarized lenses for eyewear providing sun protection (Clauses 16.2.5, 16.2.6, and 16.3.5); • increased the number of prescription lens configurations presumed compliant (Table 5); • added a figure with measurement locations to Figure 9; and • updated the references (Clause 2) and definitions (Clause 3). As introduced in the 2002 edition, the basic performance requirements apply to all protectors covered in this Standard, whereas the test procedures specified differ for prescription eyewear and nonprescription eyewear. As in previous editions, for non-prescription protectors, specified testing procedures are to be conducted using the whole assembled product (not individual components). In contrast, for Class 1 protectors having prescription lenses, performance criteria and test procedures are applied to lenses and frames separately. This Standard sets out requirements for the manufacture of these protectors (e.g., quality assurance). In addition, special allowance has been made in this edition for the role of ophthalmic professionals in adjusting and modifying spectacles to fit the individual wearer. When taken together, these requirements provide a basis for conformity assessment of protective spectacles with prescription lenses. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of the Canadian Association of Administrators of Labour Law – Occupational Safety and Health (CAALL-OSH), including Provincial and Territorial Governments, as well as the Government of Canada. CSA Group is solely responsible for the content of this Standard, and CSA Group and the funding bodies disclaim any liability in connection with the use of the information contained herein. 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 eye and face protectors used in all occupational and educational operations or processes involving hazards to the eyes or face. Typical hazards include flying objects and particles, splashing liquids, molten metal, and ultraviolet, visible, and infrared radiation, but do not include X-rays, gamma rays, high-energy particulate radiation, radioactive materials, or masers. Note: The guidelines for protection outlined in Table A.1 should be followed when similar potentially hazardous activities are conducted in the home, at leisure, and in recreational environments. For certain sports activities, other Standards should be consulted (e.g., CSA Z262.2). 1.2 This Standard sets minimum performance requirements in the tests described herein but does not cover factors of design such as comfort, service life, or appearance. Note: The conformance of protectors with these requirements does not imply equality of performance, nor should it be interpreted to mean that protectors are capable of affording greater protection than is specified in this Standard. 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.


CSA B51-2014

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

A safety bulletin exists for this standard. Click here to download your free copy today.

Preface

This is the eighteenth edition of CSA B51, Boiler, pressure vessel, and pressure piping code. It supersedes the previous editions published in 2009, 2003, 1997, 1995, 1991, 1986, 1981, 1975, 1972, 1969, 1965, 1960, 1957, 1955, 1951, 1945, and 1939.

In keeping with CSA'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:

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.

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) committee responsible for developing ANSI Standard NGV 2-2007, Compressed Natural Gas Vehicle Fuel Containers, and the draft American National Standard/CSA Standard for Compressed Hydrogen Gas Vehicle (HGV) Fuel Containers. The members of these two committees are dedicated to harmonizing their standards as far as circumstances allow.

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 2009. Significant changes to Part 1 include the following:

(a) The following definitions have been added to Clause 3:

     (i) air heater coil;

     (ii) historical steam boiler;

     (iii) owner;

     (iv) pressure relief device (PRD); and

     (v) thermal expansion relief valve.

(b) General requirements: Clauses 4.1.1, 4.1.4, 4.2.4, 4.2.8, 4.6.5, 4.7.1, 4.7.2 Note 1, 4.8.2, 4.8.3, 4.9.3 Note, and 4.10 have been updated, and Clauses 4.1.9, 4.1.10, 4.2.5, and 4.2.6 have been added.

(c) Boilers and related components: Clauses 6.2.1 and 6.7 have been updated, and Clauses 6.2.2 and 6.5.1 Note 3 have been added.

(d) Pressure vessels - applicable codes and standards: Clauses 7.1.2 and 7.1.4 have been added.

(e) Piping and fittings: Clause 8.1(c) has been updated.

(f) Repairs and alterations: Clause 11.5 has been added.

(g) Pressure relief devices: Clause 12 has been added.

(h) In-service inspection: Clause 13 has been added.

(i) Categories of fittings: Table 1 Note 2 has been updated.

(j) Maximum servicing intervals: Table 5 has been added.

(k) The sample forms in Annex D have been updated to include cast aluminum.

(l) Requirements for a crush test for manifold vessels have been added to Annex G (Clause G.3.7).

(m) Provisions applicable to overpressure protection devices have been revised (Annex H).

(n) Requirements for historical boilers have been added (Annex I).

(o) Requirements regarding the use of finite elements analysis (FEA) to support a pressure equipment design submission have been added (Annex J).

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 the user of this standard to be aware that applicable local regulations can take precedence over the requirements of that Code.

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B51-14, 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 (nonmandatory) to define their application.

1.6
The values given in SI (metric) units are the standard. The values given in parentheses are for information only. Nominal pipe sizes are expressed in non-dimensional terms.

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B51-14, Part 2 - High-pressure cylinders for the on-board storage of natural gas and hydrogen as fuels for automotive vehicles

0 Introduction

Part 2 of this Standard concerns 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. The use of gas cylinders is governed by the Act. Users and manufacturers should note the need to apply to the applicable regulatory authorities for approval of gas cylinders.

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 (nonmandatory) to define their application.

1.8
The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

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B51-14, 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 refuelling 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 refuelling 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 (nonmandatory) to define their application.

1.4
The values given in SI (metric) units are the standard. The values given in parentheses are for information only.


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