The version of NFPA 70E standard and probably the future version the CSA Z standard is characterized by an integration with the risk analysis process, a pyramid describing the periodization of corrective actions is illustrated on the main page of this new version fig1. The first step of the process consists of trying to eliminate, at the source, the danger, if the residual risk is not tolerable, then it should be managed by substitution and engineering controls actions, finally, administrative controls tools, awareness and PPE are considered as last resort risk reduction measures. Equivalent to an access to machine danger zone, tasks on electrical installation should be performed after locking out the equipment, however, if a lockout procedure is impractical then, a risk analysis should be undertaken to reduce and evaluate the risk. To date, the version of the CSA Z standards is not published yet, however, links will be made with the NFPA 70E standard, because the Canadian electrical safety standard have always been based on the American standard. In this blog, only the main changes will be treated. The definition of arc flash hazard has been refined and the link to the table
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Accident prevention is a concern when working with electricity. In Canada, it is only in that a standard on occupational electrical safety at work at been created. This standard focuses primarily on arc flash and electrical shock risks and provides preventive measures that should be taken to avoid damages that generally occur when working in hazardous conditions.
This is based on the U. The standard CSA Z specifies the electrical safety requirements in the workplace that are necessary to protect workers during the installation, inspection, use, maintenance and demolition of electrical conductors and electrical equipment, as well as for the work performed close to energized electrical equipment.
The standard also helps organizations to upgrade or implement in-house electrical safety, but also offers benefits to electricians. The compliance of the standard CSA Z could make the difference between winning and losing contracts with customers who have electrical safety programs in place or give priority to the recruitment of vendors that have proven health and safety performances. More specifically, here are a few of the changes found in the edition of the standard CSA Z on electrical safety published in January Apart from the safety approach based on risk, the version of the standard CSA Z on electrical safety provides details on acknowledged methods to identify electrical risks and defines the best safety practices for work on or around electrical equipment.
More specifically:. You need the help of electrical safety experts to make sure your protection program complies with the new requirements of the standard? This new edition is characterised by a risk analysis approach. Moreover, a pyramid describing the periodization of corrective actions is shown on the main page. The first step of the process is trying to eliminate the potential source of danger. If the risk persists, alternatives and technical control measures must be put in place. And lastly, administrative control tools, awareness and PPE are considered last resort risk reduction measures.
Electrical installation tasks must be performed after locking out the equipment. However, if a lockout procedure is impossible, risk analysis is to be conducted to find an alternative.
Significant changes compared to the edition include mainly: A greater clarification of the risk assessment procedures for hazardous electrical systems A control hierarchy applied to risk mitigation Revision of the consideration on the state of the equipment A new requirement for fieldwork audits A new section on human performance and electrical safety More specifically, here are a few of the changes found in the edition of the standard CSA Z on electrical safety published in January The risk assessment procedure has been modified and made mandatory for the advance work planning.
The possibility of human error is now part of the advance work planning process. The planning requirements concerning work safety were modified. The assessment of electric shock risk has been modified to comply with the objective of risk assessment and is a mandatory requirement in the task planning process.
The upper limit in case of arc flash and blast exposure has increased. The arc flash risk assessment has been modified. The chart has been revised for the arc flash risk assessment and probability of occurrence, to be aligned with the risk analysis.
The charts about categories of PPE against arc flash have been modified and renumbered. A number of updates and new definitions were added.
Implement electrically safe work conditions. This clause has been rearranged. Work tasks involving electrical risks have been modified and some requirements were relaxed due to ongoing research on arc flash and the effects on workers. Arc flash studies on PPE have modified the level of safety clothing to be worn. More specifically: Requirements concerning the state of maintenance, periodic inspections and program audits were added to the section on electrical safety programs.
The control hierarchy is now mandatory with this new requirement that makes elimination of dangers the first priority when implementing safe work practices.
The electrical safety programs must now include the investigation of emergency incidents. The minimum threshold of potentially dangerous energy has been reduced from 50V to 30V. The process of electric shock risk assessment is now aligned with the risk assessment process related to arc flash.
Arc flashes are now recognized as a category of electrical risks. The grid about the selection of clothing and other PPE items has been transferred from the Annex H to the risk assessment criteria related to arc flash, which is part of the mandatory requirements.
The grid about the identification of arc flash hazards is now associated with the risk assessment of arc flashes. All requirements for training and audits were transferred to the section 4. Blog Category Blog Confined Space.
CSA Z462 and Risk Assessment
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 critieria for the identification and training of qualified electrical workers and for determination of hazardous work to be performed only by those qualified individuals. The key elements of the CSA Z standard are summarized below. Complete details should be obtained from the standard itself. Employees who may be exposed to electrical hazards must be specifically trained to understand the hazards associated with electrical energy as well as the safety-related work practices and procedures required to provide protection from them. The level of training provided determines the tasks that an employee is qualified to perform. The training requirements include:.
Mind Your Safety
It is based on and was developed in parallel with U. CSA Z is the Canadian standard that addresses electrical safety requirements for employees. It provides guidance on the assessment of electrical hazards and design of safe work spaces around electrical power systems. It stipulates requirements for identifying hazardous equipment and for the development of safe work procedures around this equipment.
CSA Z462: Workplace Electrical Safety Standard
It supersedes the previous editions published in , , and In addition to its initial source, it includes significant revisions by 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. In this 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.
Electrical safety: Changes in the 2018 NFPA 70E/CSA Z462 standard
Written by Terry Becker , P. The CSA Z Workplace electrical safety Standard, both the Edition and now the Edition, require that a mandatory Risk Assessment Procedure be completed for discrete energized electrical work tasks. During training, the information provided to supervisors and Qualified Electrical Workers may not have covered the topic, described what the required risk assessment process is, or explained that the process shall be documented in order to comply with the mandatory CSA Z Risk Assessment Procedure. Risk assessment is not hazard analysis. You need to consider both the potential for injury or damage to health as well as the likelihood of occurrence.