Poorly Wired MID

Poorly Wired MID

HSSEHealth, Safety, Security and Environment. This describes the code, policies and standards that the industry must follow to maintain health and safety on the job and for the environment. BulletinBulletins highlight issues that will be experienced throughout the industry, and prove a useful tool to encourage the raising of standards and awareness of health and safety issues industry wide. No 593
09 November 2017

Poorly Wired MIDMain Identity Sign - The big Price sign on a petrol forecourt, sometimes referred to as Totem, Gantry, PID, Pole.

Please see enclosed safety alert regarding a poorly wired MID shared with us by BP.

Unfortunately, poorly wired circuits on site are common, and this is the second most common category of potential incident reports we receive.  We have recorded 370 electrical PIs related to poor electrical condition, 20 PI’s just this year.   In 36 of those PI’s this resulted in the equipment having no earth, and 24 resulted in exposed live parts.

Before working on any equipment always isolate the energy source (LOTO), and test the circuit to ensure it is dead.  However beware that circuits are regularly min-labelled and automatic switching can mean circuits are switched on without warning, this can result in you inadvertently isolating the wrong circuit and testing a circuit that is only dead due to the light levels being good.  Always test a cable you think is dead immediately before touching it.  If possible, avoid touching any exposed conductor.

If you see any poorly installed electrical equipment, always report it – you may be saving somebodies life.

If you are in doubt as to which circuit needs to be isolated, contact your line manager so an electrician can investigate.

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