Document ID: chunk:federal_register_of_legislation:F2016L00407:body:0:p26
Version: federal_register_of_legislation:F2016L00407
Segment Type: other
Provision Reference: 
Character Range: 68015–70985

point of isolation should be under the control of the person
who is carrying out the work on the isolated conductors.
Tagging systems should also be used at the point(s) of isolation where possible for general information.
The isolation should be secured by locking off and tagging the electrical equipment as follows.

Instruction, information, training and supervision
Appropriate instruction, information, training and supervision must be provided to ensure that electrical equipment that has been de-energised to allow electrical work to be carried out is not inadvertently re-energised. This includes appropriate instruction, information and training on isolation procedures to everyone who may be affected at the workplace.

Locking off
Isolation points should be fitted with control mechanisms that prevent the electrical equipment from being inadvertently re-energised. The control mechanism should require a deliberate action to engage or disengage the device. It should be able to withstand conditions that could lead to the isolation failing, for example vibration.
This may include switches with a built-in lock and lock-outs for switches, circuit breakers, fuses
and safety lock-out jaws (sometimes called 'hasps').
All circuit breakers, switches and combined fuse switch units should be locked off to secure the isolation where possible. See
Figure 5 for examples of locking-off methods incorporating danger tags.
Alternative controls may include an additional component, for example a clip, screw, bolt or pin that can be inserted to prevent a switch from being operated. These types of controls should be used in conjunction with additional control measures, such as danger tags and permit systems.
If more than one person is working on the same de-energised electrical installation, individuals should ensure their own personal lock is applied to the isolation point, otherwise the principles
of tagging apply (see below).
No-one should operate an isolator or knowingly use equipment where the isolator has a control mechanism attached.
In situations where isolation points are accessible by other persons at the workplace ensure,
 so far as is reasonably practicable, that the isolation method or system is not able to be inadvertently or easily compromised.

Figure 5: Locking off methods incorporating danger tags

Danger tagged locking off hasp  Danger tagged circuit breaker locking off devices

Tagging systems

Danger tags
Isolation involves using suitable warning or safety signs as well as locks or other controls to secure the isolation.
Where possible, a tag should be attached to normal locks (as shown in
Figure 5) at all points of isolation used to de-energise electrical equipment from its electricity supply.
A tag does not perform the isolation function.
Danger tags are not required when using dedicated personal isolation locks.
Danger tags are used for the duration of the electrical work to warn persons at the workplace that:
    *