Energy Control Procedure
Is 'Energy Control Procedure' the same as lockout/tagout?
In practice, yes in broad terms, but the procedure is the written control method, while lockout/tagout is the mechanism used to execute it. WorkSafeBC emphasizes de-energization plus lockout as the default control method.
Why must verification be performed after lockout?
Because isolation alone does not guarantee zero energy; verification confirms the machine cannot start and no hazardous energy remains available.
Can a generic procedure be used for all machines?
Not for higher-risk machinery under OSHA-style requirements; the written procedure must be specific to each machine or piece of equipment and describe its exact shutdown and isolation steps.
What is the regulatory logic behind using the main power circuit rather than control power?
WorkSafeBC states energy-isolating devices must be applied on the main power circuit, because control circuits may not fully prevent transmission or release of hazardous energy.
What triggers the need for an energy control procedure?
Any servicing or maintenance where unexpected energization, startup, or release of stored energy could cause injury.
How does this relate to machine safeguarding?
Machine safeguarding protects workers during normal operation, while the energy control procedure protects workers during servicing, maintenance, and similar non-routine tasks when safeguards may be removed or bypassed.
What would an auditor look for?
A machine-specific written procedure, correct identification of all energy sources, proper isolation devices, personal lock control, stored-energy release steps, documented verification, and annual or periodic inspections/training where required.
An Energy Control Procedure is a written, machine-specific hazardous energy control procedure used to isolate and verify zero energy before servicing or maintenance, preventing unexpected energization, startup, or release of stored energy that could injure workers. It identifies all energy sources, isolation points, shutdown sequence, lock application, stored energy dissipation, and zero-energy verification.
On a manufacturing shop floor, the Energy Control Procedure is applied step-by-step: the authorized worker identifies the machine, notifies affected workers, shuts down using normal controls, isolates all hazardous energy sources at the main energy-isolating device, applies personal locks, releases stored energy (e.g., bleeding air or hydraulic lines, discharging capacitors), and verifies zero energy by attempting to start the machine or testing gauges. Work proceeds only after the machine is proven inoperable. This ensures safety during servicing, maintenance, cleaning, or unjamming tasks.
Locking out the wrong point: using a control circuit or pushbutton instead of the required main energy-isolating device, which is a compliance failure under WorkSafeBC guidance.
Incomplete energy identification: failing to account for secondary sources or stored energy such as hydraulic pressure, gravity, capacitors, springs, or residual pressure, leaving the machine unsafe even if the primary disconnect is locked out.
No machine-specific written procedure or no verification step: relying on a generic or verbal process instead of a written, specific procedure with verification testing, which is a common violation under OSHA-style rules.