our 5 failproof steps to safe isolation

Introducing a memorable, compliant safe isolation procedure to help electricity-related injuries and fatalities in the workplace.

In creating our “ALIVE” message, we distinguish between good working practice (to complement our complete 12 step approach) and shining a spotlight on the 5 vital steps that absolutely must be carried out for your own protection and to prevent loss of life.


pproved kit


Before starting, make sure your equipment meets all legal safety standards.

Always ensure that the Voltage Indicators (VI) you are using comply with BS EN61243-3, such as Martindale’s VI13800 voltage indicator, which has been specifically designed to meet this standard.

Go to Equipment →


ock Out


Identify the point of isolation – lock it off and place warning tags onto the equipment.

A basic lock-off kit should include a selection of MCB Lock Off
devices, a padlock with a unique key, a hasp if more than one
person is working on a system as well as lock-out tags and
warning labels.


nitial Prove


Test your VI against the proving unit to make sure it is working properly.

It is recommended to use a dedicated proving unit matched to the VI to fully test that all LEDs on all ranges are working. A proving unit is safer than the mains and provides a live source wherever you are working.


oltage Test


Use your VI to check for dangerous voltage levels.

The next step is to test for dangerous voltages on the circuit to be worked on, whether single or three-phase. Verify that the circuit you intend to work on, is the correct circuit which you have safely isolated.




Prove the VI against the proving unit again before starting to
work on the circuit.

Re-test your VI is functioning and working correctly to make
sure that no damage has occurred, or fault appeared on your equipment.


ALIVE Powerpoint slide

Safe Isolation 12 stage flowchart

Safe Isolation webinar

ALIVE poster A3

ALIVE poster A4

ALIVE A5 flyer

ALIVE business card size