Work on Electrical Installations and in premises presenting a fire or explosion hazard
Definitions and concepts:
20. Technical instructions
20.2. Work in the vicinity of live parts
Access to utility areas and enclosures of electrical material
Access to independent areas devoted to electrical utilities or to the carrying out of electrical trials or tests (generating stations, substations, control rooms or laboratories) is restricted to:
- a. Authorised Workers.
- b. Personnel that have been informed previously of the existing risks and the precautions to take and who are to remain under the constant supervision of an Authorised Worker at all times.
When there are no service personnel in the area, the doors are to remain locked so as to impede the entry of unauthorised personnel. The opening of cells, cabinets and other enclosures for electrical material is to be restricted to Authorised Workers.
Accessing the areas and the opening of enclosures by Authorised Workers may only be carried out with the knowledge and consent of the person in charge of the installation and, in the case of our being a subcontractor, also of our Client.
Work and other activities involving the movement or displacement of equipment or materials in the vicinity of overhead or underground power lines or other electrical installations.
To carry out activities in which the movement or displacement of equipment or materials is, or may be, produced in the vicinity of overhead or underground power lines or other electrical installations, the following safety rules must be complied with:
- 1. Before starting work, identify any possible overhead or underground power lines or other electrical installations in the work area or in the vicinity.
- 2. Adopt the preventive measures necessary to avoid entering into Contact with an underground line or any other protected live part, with the subsequent possibility of damaging the insulation.
- 3. If during some phase of the work the presence of overhead lines or of some other unprotected live element supposes an electrical hazard for workers and power cannot be cut-off or the line re-routed (as in the case of the impossibility of disconnecting the power supply or in the cases of manoeuvres, measurements, trials and test, for example: the opening and closing of switches or circuit-breakers, measurement of a current, the carrying out of electrical insulation tests, checking phase concordance), act in accordance with the stipulations of the general procedure for proximity work.
To determine danger and proximity zones and to be able to demarcate the work area and access ways, special attention is to be paid to the following:
- a. The closest unprotected live parts.
- b. Foreseeable movements or displacements (transport, elevation and any other type of movement) of equipment or materials.
Personal Protective Equipment
Basic PPE (safety helmet, footwear and goggles), as well as the Firm’s work clothes.
For preparing jobs in the vicinity of LV installations: basic PPE and a LVW kit.
Kit for jobs with an electrical hazard
