Changes in Standard CSA Z460:20
An update to standard CSA Z460 on lockout and other energy control methods was published in August 2020. The following previously published blogs address various aspects of lockout that are still relevant and may also be of use to you.
Lockout of Mobile Equipment
Energy Control Method Other Than Lockout
Tips on Electrical Zero Energy Verification
Elements of a Lockout Procedure
Individually Keyed Lock and Information Tag
The 2020 version of standard CSA Z460 contains a few notable additions over the previous version. The points listed below address the main changes made, the most significant of which are in the annexes of the standard.
184.108.40.206 Hazardous energy control procedures
The term “lockout sheet” is replaced by “energy control procedure” or “lockout procedure” in the 2020 version of the standard. This term therefore becomes standardized with the Regulation respecting occupational health and safety (RROHS or RSST).
7.3.9 Remote locations
By way of clarification of what is considered to be a remote location, it is specified that each organization should establish what it considers to be a remote location with as an example “a work area away from a control center.” These can be pipeline networks, who pumping stations are far apart from each other; or gas and electricity distribution networks.
In these cases, the people doing the work are not the ones applying lockout. Therefore, communication challenges are high and “documented procedures must be followed in conjunction with the obtainment of written authorizations.”
In addition, a suggestion is made in the 2020 version to have the lockout verified, if possible, by a second authorized person, in the case of remote locations.
Annex D: Templates for lockout program and policy, general lockout procedure (individual) and approved energy control procedure
The formatting has changed but the content remains the same except for the addition of an individual lockout process flowchart that details all the steps from task assignment to completion, including the affixing of a supervisory padlock in case of postponement of work.
Annex E: Lockout signs, flow diagrams and nomenclature standards (formerly, Annex E: Lockout sheets)
The main addition to Annex E is part E.1 which is an example of a nomenclature standard. This part can be very useful for organizations that want to set up a new identification of cut-off points which should all have a unique identifier easily visible in place.
The rest of Annex E uses the same examples of signs and lockout procedure (sheets), formatted differently.
Annex F: Group lockout procedure template
This is Annex G of the previous version with some modifications (formatting, images, etc.). In particular, two flowcharts are added: a flowchart of the individual lockout process and a flowchart of the group lockout process. They present the completion of a complete lockout procedure. There is also a testing flowchart. Testing being the partial or complete energy reset during the intervention for tests or other needs before resetting to zero energy and continuing.
Section F.2 explains the use of an auxiliary lockout box in the context of group lockout involving a large number of authorized workers. This process involves the use of a supervisory lock and allow for faster lockout and termination.
Annex I: Advice on construction sites
This is an addition to the 2020 version of the standard. Construction sites are the scene of many more or less complex activities carried out simultaneously by many companies. This Annex states that “the host user’s hazardous energy control program be used to coordinate all external services and external contractor programs.” It also lists 18 points guiding compliance with this requirement. For example, the use of zonal isolation methods is recommended when energizing the electrical network of a construction site.
Annex M: Information on mobile equipment and machinery
Section M.4 is an addition to the 2020 version. It emphasizes the following 4 points concerning vehicles with internal combustion engines:
– The risks associated with starting internal combustion engines that are not equipped with a lockable energy isolation device that prevent starting;
– The energy isolation devices on mobile equipment;
– The potential and residual sources of hazardous energy, which are frequent on mobile equipment.
These additions help to identify the potential sources of dangers on mobile equipment and the measures to be put in place to control energy.
Annex N: Control method for other energy systems
This new annex aims to identify the risks and measures to be taken specific to energy systems such as wind turbines and solar panels. These are two examples of the application of the concept of energy control in the environment around the intervention area. For example, one can isolate the source of electrical energy supplying the systems, but the wind turbine or the electrical panel themselves produce electricity and therefore become another source of energy to be controlled.
Annex S: Example of the decision-making process for other control methods
This new annex notably contains a table with many examples of tasks compared to the selection criteria to figure out whether these tasks can be performed using a method other than lockout. It is the purpose of this annex, as well as to help identify a method of controlling the energy.
Appendix T: Consideration of human performance factors
Behind the notion of human performance is the notion of human errors or of human factors in the occurrence of incidents or accidents. As the application of energy management methods is human-based, this addition to the standard makes it possible to tackle the management of human errors in order to limit them as much as possible and thus improve the efficiency of work methods.
Lockout of mobile machines
Did you know that mobile equipment is subject to the same regulatory requirements as any other type of equipment or industrial machine where lockout is concerned? Articles 188.1 to 188.13 of RROHS apply to all “machines”. This means, among other things, that mobile equipment should be included in your lockout program and that a lockout procedure (lockout card) should be available for each device. The inclusion of mobile equipment is also provided for in standards such as CSA Z460-13.
Energy control method other than lockout
For access to a danger zone during maintenance activities or assembly and installation activities, lockout or, in absence of lockout, any other energy control method that ensures equivalent safety must be applied, according to RROHS article 188.2. These other energy control methods are sometimes called ‘’alternative methods to lockout.’’
Eletrical zero energy verification aid
With the CSA Z460 standard and the regulatory changes in Quebec, the aim is to find the most reliable method for validating the absence of electrical energy.
Lockout program, what is it? Also called Hazardous Energy Control Program, it is a written document ultimately aimed at eliminating or reducing as far as possible the risks related to hazardous energies on equipment during maintenance work.
Lockout procedure elements
Non-compliance of lockout procedure is on of the main causes of lockout – related accidents…
Individually keyed lock and information tag
With several types of locks and different uses, locks management should be considered as an essential task to reach an optimal efficiency of a lockout program.
Industrial machinery are often associated with a multitude of risks and hazards (ISO 12100, 2010; CSA Z432, 2014; ANSI B11-TR3, 2000; Bluff, 2014). When workers intervene on a machine, during all its life cycle stages , they are exposed to many kinds of hazardous situations.
Rules and Standards Related to Lockout
In 2016, the Commission des normes, de l’équité, de la santé et de la sécurité du travail (CNESST) revealed that an average of four deaths and 1,000 accidents annually are related to gaps in lockout/tagout procedure during maintenance tasks.
Intervention Prévention Inc.
Intervention Prévention concentrates its operations in the field of work safety, offering specialized services following Standards CSA Z462 – Workplace Electrical Safety, CSA Z460 – Control of Hazardous Energy: Lock-out and Other Methods, and CSA Z432 – Safeguarding of Machinery.
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