Occupational Health and Safety

This Standard applies to new or unused wheeled or tyred, self-propelled, non-rail-bound, mobile machines for use in underground mines.

This Standard describes the technical aspects and procedures necessary for the design, performance, and testing of core design and safety requirements.

This Standard covers general requirements only. Requirements common to a variety of underground mining mobile equipment are grouped in this Standard. The remaining Standards in the series state requirements for braking and specific types of power trains. See Annex DA for additional information on how to apply the CSA M424 series of Standards.

For utility / service / support machines, this Standard only includes provisions to address the risks associated with the mobility (movement of the whole machine from one location to another). Risks for the additional functions (e.g., scaling, concrete spraying, bolting, charging drilling attachment) are not covered in this Standard.

1.1 General

This Standard describes minimum performance criteria for the service braking system, secondary braking system, and parking system for rubber-tired, self-propelled underground mining machines.

This Standard provides minimum braking system performance for rubber-tired, self-propelled underground machines, and test criteria by which machine braking system performance may be verified.

These requirements are in addition to the requirements for braking systems and performance testing specified in CSA M424.0.

Notes:

1)     Additional requirements for brake systems on machines used in coal and gassy underground mines are found in CSA M424.1.

2)     Additional requirements for dynamic and continuous retarding systems for electrically driven mobile machines are found in CSA M424.4.

1.2 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 (nonmandatory) to define their application.

1.1 Inclusions

This Standard applies to eye and face protectors used in all general occupational, educational, operations or processes and facilities involving hazards or contaminants to the eyes or face.

Notes:

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. For guidance, refer to CSA Z94.3.1- Guideline for selection, use, and care of eye and face protectors.

This Standard sets minimum performance requirements in the tests described herein.

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.

1.2 Exclusions

The Standard does not apply to certain hazards such as bioaerosols, biohazards, X-rays, gamma rays, high-energy particulate radiation, radioactive materials, or masers and factors of design such as

a)    comfort;

b)    service life; or

c)    appearance.

Note:

Refer to CSA Z94.4-26 Selection, use, and care of respirators for protection against infectious bioaerosols (See Clause 7.3.4.3 in CSA Z94.4).

The standard also does not apply to laser protective eyewear

Note: For information on laser protective eyewear, see ANSI Z136.1, American National Standard for the Safe Use of Lasers and other standards in the ANSI Z136 series.

1.3 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.

1.4 Units of measure

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.

1.1 General

1.1.1

This Standard applies to occupational diving operations conducted in connection with all types of work and employment, and describes the requirements for occupational safety.

Note: It is recognized that certain underwater tasks might require specialized standards of practice and/or operational techniques that differ from the requirements of this Standard yet may be acceptable to the authority having jurisdiction. Users should consult applicable provincial and federal occupational safety and health regulations to determine whether they impose safety requirements additional to or more stringent than those of this Standard.

1.1.2

This Standard addresses the minimum equipment requirements and operational procedures for the following diving systems and work environments:

a)     SCUBA diving systems (see Clause 7);

b)     surface-supplied diving systems (see Clause 8);

c)     deep diving systems (see Clause 9);

d)     one-atmosphere diving systems (see Clause 10); and

e)     diving in contaminated environments (see Clause 11).

f)      nitrox diving (see Clause 12)

g)     unexploded explosive ordnance (UXO), munitions, and police explosive diving (see Clause 13)

Note: The information relating to unexploded explosive ordnance (UXO), munitions, and police explosive diving was previously contained in standard Z275.6. Competencies for this work are still contained in Z275.6 until incorporated into Z275.4.

1.2 Limitations

1.2.1

This Standard does not apply to scientific diving as defined in Clause 3. However, for clarification, diving that is conducted outside of the Definition in Clause 3 does fall under this Standard.

1.2.2

This Standard does not apply to diving operations performed solely for sport or recreation.

1.2.3

This Standard does not include work techniques associated with underwater diving operations.

1.3 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.

1.4 Units of measurement

The values given in SI units are the units of record for the purposes of this Standard. Where values are given in parentheses, they are for information and comparison only.