A lot of incidents happen when communications are poor.
Jobs that span a shift change or multiple days of work have an increased risk of an accident occurring.
Listen carefully, pay close attention, and you’ll make it through just fine.
And one last thing… never assume anything, when it comes to electrical safety!
Electrical safety program - this is the game plan your company or organization has for electrical safety. I covers all the policies, procedures and strategies used to make sure that every worker understands how to stay safe around electricity in your workplace.
Electrical safety programs a documented but most importantly need to be acted upon… taking this training is only a small part of having an effective electrical safety program.
Resources required for this scenario
Temporary protective grounds
When de-energizing high voltage systems you cannot consider it a zero energy state until temporary protective grounds have been installed.
The most important considerations for the selection of temporary protective grounds is the withstand rating and the length.
Withstand rating is the amount of current the grounds can handle for a certain period of time.
As an example, a 2/0 ground can withstand 27,000 amps for 0.25 seconds and 20,000 amps for 0.5 seconds.
A “contractor kit” is really just all the required arc-flash protection in one easily accessible package.
Nowadays, you can get these kits in almost any incident energy rating, but the most common are:
Cat 2 Kit - Arc rating of 8 ATPV
Cat 4 Kit - Arc rating of 40 ATPV
They should also come with a set of rubber insulated gloves and leather protectors.
Non-contact high voltage detector
Critical for high voltage work, the non-contact detector is the difference between life and death.
Every time you are working on or near exposed conductors you need to verify absence of voltage prior to starting the work (unless you are working energized… but we will get to that later).
As opposed to low voltage testing you are unable to verify phase-to-phase and phase-to-ground with the use of a non-contact detector… so along with this, temporary protective grounding needs to be employed to ensure the system is at zero energy!