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Lockout verification steps: 9 cited checks

WrenchQuarry Editorial Team · Published · 11 min read

Nine cited checks cover shutdown, isolation, residual energy relief, and continued verification until servicing or maintenance is completed.

Key takeaways for lockout tagout verification steps for field equipment

  • Clear the area: Before testing, ensure that all other workers are clear of the hazards and that no hazard will be created if the process isn’t effective, according to WorkSafeBC.
  • Define the sequence: Your procedure must include the steps for shutting down, isolating, blocking, securing, and relieving stored or residual energy, as outlined by CCOHS.
  • State the purpose: Document why the lockout/tag out is required, such as for repair or maintenance, following the guidance from CCOHS.
  • Manage devices: Include the specific steps for placing and removing all lockout devices in your written procedure, as specified by CCOHS.

Lockout tagout verification ensures energy isolation is complete

Lockout tagout verification confirms that hazardous energy is controlled before a technician touches equipment. This procedure establishes the minimum requirements for the lockout of energy isolating devices whenever maintenance or servicing is done on machines or equipment, according to Legal Information Institute. The standard applies to the control of energy during servicing and/or maintenance of machines and equipment, as stated by Legal Information Institute.

The nine steps cover the full scope of isolation. Step 1 identifies shutdown steps. Step 2 clears workers from the area. Step 3 selects a verification method. Step 4 documents the isolation reason. Step 5 places the isolation device. Step 6 notifies the area. Step 7 relieves residual energy. Step 8 checks for reaccumulation. Step 9 states that the standard applies to energy control during servicing and/or maintenance. Each step addresses a specific part of the energy control process.

Team leads must ensure their procedures match these minimum requirements. The procedure covers the lockout of energy isolating devices. It applies whenever maintenance or servicing is done on machines or equipment. The standard focuses on the control of energy during these activities.

These steps form the core of your verification process. They address the minimum requirements for lockout. They apply to the control of energy during maintenance. Use them to build a reliable checklist for your team. This helps ensure safe equipment service.

Read Field Service Work Order Checklist for Dispatch Handoffs.

Identify hazardous energy sources and shutdown steps

The first four verification steps focus on defining the shutdown process, ensuring worker safety, selecting a proper verification method, and documenting the reason for the lockout. These initial actions form the foundation for safe equipment service in field environments.

1. Shutdown steps Begin by establishing the specific sequence for stopping the equipment. CCOHS defines the core actions as "The steps for shutting down, isolating, blocking, securing, and relieving stored or residual energy." according to CCOHS. Your team lead must map these actions to the specific machine before any physical work begins. This definition covers the full range of energy states, not just the initial power cut. The procedure must account for blocking and securing mechanisms that prevent accidental restart.

2. Worker clearance Before any testing occurs, you must verify the physical safety of the surrounding area. WorkSafeBC states that you must "ensure that all other workers are clear of the hazards and that no hazard will be created if the process isn’t effective." according to WorkSafeBC. This step requires a visual check of the work zone. If a verification test fails, the resulting energy release must not endanger anyone nearby. Team leads should confirm that non-essential personnel have left the immediate vicinity of the equipment.

3. Verification method Selecting the right tool or technique to prove isolation is critical. CCOHS advises to "Choose the method that will make sure that the energy to the system has been isolated without creating other hazards during the verification." according to CCOHS. The method chosen must be safe for the specific energy type involved. For example, using a meter on a live circuit creates a different risk profile than checking a pressure gauge. The verification step itself must not introduce a new danger to the technician performing it.

4. Isolation reason Documenting why the lockout is happening is part of the verification record. CCOHS lists why the lockout/tag out is required, such as repair or maintenance, as a necessary component according to CCOHS. This entry clarifies the scope of the work. It helps distinguish between a full maintenance shutdown and a temporary isolation for a specific repair. Keeping this reason clear helps other team members understand the status of the equipment.

These four steps set the stage for the physical isolation and residual energy relief covered in the next section.

A filled reference table for lockout verification

The table below collects nine cited statements and names each publisher.

StepRequirementPublisher
1. Shutdown stepsThe steps for shutting down, isolating, blocking, securing, and relieving stored or residual energy.CCOHS
2. Worker clearanceBefore testing, ensure that all other workers are clear of the hazards and that no hazard will be created if the process isn’t effective.WorkSafeBC
3. Verification methodChoose the method that will make sure that the energy to the system has been isolated without creating other hazards during the verification.CCOHS
4. Isolation reasonWhy the lockout/tag out is required, such as repair or maintenance.CCOHS
5. Device placementThe steps for placing and removing all lockout devices.CCOHS
6. Area notificationHow others in the area will be informed of the lockout and the return to service.CCOHS
7. Residual reliefFollowing the application of lockout or tagout devices to energy isolating devices, all potentially hazardous stored or residual energy shall be relieved, disconnected, restrained, and otherwise rendered safe.Legal Information Institute
8. Reaccumulation checkIf there is a possibility of reaccumulation of stored energy to a hazardous level, verification of isolation shall be continued until the servicing or maintenance is completed, or until the possibility of such accumulation no longer exists.Legal Information Institute
9. Scope definitionApplies to control of energy during servicing and/or maintenance of machines and equipment.Legal Information Institute

Illustrative example of nine isolation checks

Picture one machine with two energy sources. These figures are illustrative. Step 1 writes the shutdown order. Step 2 confirms three other workers are clear. Step 3 uses one verification method. Step 4 records maintenance as the reason. Step 5 places two lockout devices. Step 6 tells four nearby workers about the lockout and the return to service. Step 7 relieves stored energy. Step 8 keeps the isolation check going until the work ends. Step 9 stays within servicing and maintenance.

Isolate, verify, and relieve residual energy safely

After identifying the energy sources and executing the shutdown, the procedure requires physical control of the isolation points. The specific actions for placing and removing all lockout devices are defined in the written procedure, according to CCOHS. This step involves securing the energy isolating devices with locks and tags to prevent accidental re-energization. The placement must be precise, ensuring that the correct devices are engaged for the specific equipment being serviced.

Read Lockout checks before equipment is opened: 6.

Once the devices are in place, the focus shifts to the people working nearby. The procedure must specify how others in the area will be informed of the lockout and the return to service, according to CCOHS. This notification ensures that personnel who might attempt to operate the equipment or nearby machinery are aware that the system is secured for maintenance. Clear communication prevents unauthorized attempts to bypass the isolation measures.

Following the application of lockout or tagout devices to energy isolating devices, all potentially hazardous stored or residual energy shall be relieved, disconnected, restrained, and otherwise rendered safe, according to Legal Information Institute. This requirement addresses energy that remains in the system even after the primary power source is cut. Examples include capacitors, springs, or hydraulic pressure. The technician must actively manage this residual energy to bring it to a safe state before beginning work.

If there is a possibility of reaccumulation of stored energy to a hazardous level, verification of isolation shall be continued until the servicing or maintenance is completed, or until the possibility of such accumulation no longer exists, according to Legal Information Institute. This ongoing check is critical for systems where energy might build up again during the maintenance process. The technician must monitor the isolation status throughout the job, not just at the start. This continuous verification ensures that the work area remains safe for the duration of the task.

Servicing tasks that can release hazardous energy

The Legal Information Institute identifies covered activities that trigger lockout procedures, including lubrication, cleaning, or unjamming of machines and equipment, as well as making adjustments or tool changes, where an employee may be exposed to the unexpected energization or startup of the equipment or release of hazardous energy, according to Legal Information Institute.

Notify workers and document the return to service

CCOHS defines the area notification element as how others in the area will be informed of the lockout and the return to service according to CCOHS. This requirement covers both the initial isolation event and the subsequent restoration of power. Your team's procedure must specify who receives this notification and how the message is delivered.

The notification process should identify the specific individuals who need to know the equipment is locked out. These are typically workers in the immediate vicinity who might interact with the machine or its controls. The method of informing them can vary based on your site's layout and communication protocols. Common approaches include verbal warnings, visual signage, or radio announcements.

When the maintenance work is complete and the lockout device is removed, the same notification process applies to the return to service. Workers must be informed that the energy source is re-energized and the equipment is operational. This prevents accidental contact with moving parts or live electrical components during the transition back to normal operation.

Documentation of this notification is part of the overall lockout tagout procedure. While the specific format of the record may vary, the key is that the information flow is tracked. This ensures that the right people are aware of the status change at both the start and end of the maintenance window.

Review your team's lockout procedure to ensure it includes steps for relieving residual energy and verifying isolation.

FAQ: lockout tagout verification steps for field equipment

What steps are required for shutting down and isolating energy?

The procedure involves shutting down the equipment, isolating the energy sources, and securing them with locks or tags. You must also block, secure, and relieve any stored or residual energy that remains after the initial isolation. CCOHS names the steps for shutting down, isolating, blocking, securing, and relieving stored or residual energy, according to CCOHS.

How do you verify that energy isolation is effective?

You must choose a verification method that confirms the energy to the system has been isolated. The selected method must not create other hazards during the verification process. This approach ensures that the isolation is effective without introducing new risks according to CCOHS.

Which work does the lockout standard cover?

The standard specifically applies to the control of energy during the servicing and/or maintenance of machines and equipment, according to Legal Information Institute.

What activities trigger the need for lockout or tagout?

Lubrication, cleaning, or unjamming of machines or equipment, and making adjustments or tool changes, are included where the employee may be exposed to the unexpected energization or startup of the equipment or release of hazardous energy. Making adjustments or tool changes also triggers these requirements if the employee may be exposed to unexpected energization. The goal is to prevent startup or the release of hazardous energy during these tasks according to Legal Information Institute.

How should stored or residual energy be handled after isolation?

After applying lockout or tagout devices to energy isolating devices, all potentially hazardous stored or residual energy must be relieved. This energy must also be disconnected, restrained, and otherwise rendered safe. This step is required to ensure the equipment is fully safe for servicing according to Legal Information Institute.

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