Compliance inSight Consulting Inc.
, Compliance inSight Consulting Inc.
An elec­tri­cal rotary dis­con­nect under lockout 

Haz­ardous Ener­gy Con­trol Pro­ce­dures, or HECP, are also called Lock­out Pro­ce­dures or in the US, Lockout/Tagout. HECP is one of the admin­is­tra­tive con­trol mea­sures falling in the fourth lev­el of the Risk Reduc­tion Hier­ar­chy, after Elimination/Substitution, Engi­neer­ing Con­trols and Infor­ma­tion for Use.

Elim­i­nat­ing ener­gy relat­ed haz­ards by block­ing or iso­lat­ing the source of ener­gy is one of the most basic means of risk reduc­tion for per­son­nel involved in main­tain­ing and ser­vic­ing equipment.



, Compliance inSight Consulting Inc.
A typ­i­cal lock­out station

In Cana­da, most of the Provinces and Ter­ri­to­ries have leg­is­la­tion that requires that haz­ards be “blocked” or pre­vent­ed from mov­ing by some effec­tive means when work­ers are required to enter the dan­ger zone. Up until recent­ly, there was no clear guid­ance on how this should be done, and many employ­ers ref­er­enced the US OSHA reg­u­la­tions and ANSI stan­dards on the subject.

In 2005, CSA pub­lished CSA Z460, Con­trol of Haz­ardous Ener­gy — Lock­out and Oth­er Meth­ods. This stan­dard pro­vides the guid­ance that employ­ers and machine builders require on lock­out. Note that the use of tags alone (tagout) is not explic­it­ly pre­vent­ed in Cana­da, but it is not gen­er­al­ly con­sid­ered to be ade­quate pro­tec­tion in most situations.


In the USA, OSHA has long pub­lished require­ments for Lockout/Tagout, 29 CFR 1910.147. This stan­dard was sup­ple­ment­ed by ANSI when they pub­lished ANSI Z244.1, Con­trol of Haz­ardous Ener­gy — Lockout/Tagout and Alter­na­tive Meth­ods.


The EU does not have a stan­dard that is direct­ly equiv­a­lent to CSA Z460 0r ANSI Z244.1. CEN pub­lished stan­dard EN 1037, Safe­ty of machin­ery — Pre­ven­tion of unex­pect­ed start-up, in 1995 and have since amend­ed it with Amend­ment A1 in 2008. This stan­dard has a sim­i­lar scope and con­tent to ISO 14118 (see below), but stays with the machine design aspects of haz­ardous ener­gy con­trol, mak­ing no ref­er­ences to the pro­ce­dur­al aspects of haz­ardous ener­gy control.

It’s also worth not­ing that the use of the con­trol sys­tem for pre­vent­ing unex­pect­ed start-up of the machin­ery is antic­i­pat­ed under this stan­dard. Sec­tion 6 of the stan­dard deals specif­i­cal­ly with this aspect. This is gen­er­al­ly not per­mit­ted under the North Amer­i­can standards.


ISO 14118, Safe­ty of machin­ery — Pre­ven­tion of unex­pect­ed start-up, is the inter­na­tion­al stan­dard deal­ing with haz­ardous ener­gy con­trol. It goes beyond the Cana­di­an and US stan­dards to deal with fail­ures in the con­trol sys­tems of machin­ery as well. These require­ments may extend to oper­at­ing modes or con­di­tions beyond what is nor­mal­ly con­sid­ered to be the bounds of the usu­al LOTO or HECP.

This stan­dard also antic­i­pates the use of the con­trol sys­tem for pre­ven­tion of unex­pect­ed start-up, a con­di­tion which is gen­er­al­ly not per­mit­ted under the North Amer­i­can standards.


We pro­vide you with every­thing from an audit of an exist­ing lock­out pro­ce­dure, through full turn-key devel­op­ment of an HEC pol­i­cy and pro­ce­dures for spe­cif­ic machines.