One Person, One Lock Control of Hazardous Energy H&S Program - - PowerPoint PPT Presentation

One Person, One Lock

Control of Hazardous Energy H&S Program Standard 7-45 Course Code 600009

TRACCESS Module - 2017

Control of Hazardous Energy Training

BU Specific “Group Lockout” “Group Lockout” “Personal Lockout” “One Person / One Lock” “Control of Hazardous Energy Principles”

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BASIC Intermediate Advanced BU Competency

Increasing Competency

Contents

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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During this training module you will learn to;

• 1. Know the different types of hazardous energy
• 2. Understand the difference between primary and stored energy
• 3. Explain the term “danger zone”
• 4. Describe the two ways of controlling hazardous energy
• 5. Understand the 4-step isolation process
• 6. Describe the concept of “one person, one lock”
• 7. Understand how to apply your personal lock to a single device
• 8. Know the steps of applying your personal lock to a group lockbox
• 9. Understand a “control reliable interrupt” safety circuit and how to

apply your personal safety lock

What are our Learning Objectives

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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Why Control Hazardous Energy?

Hazardous energy must be controlled in order to keep people safe. We maintain control by locking out equipment. Your personal safety lock will protect you from these types of hazardous energy.

• chemical energy
• electrical energy
• hydraulic energy
• pneumatic energy
• thermal energy
• radiation
• kinetic energy/stored energy
• potential energy (gravity)
• mechanical energy

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Two Forms of Hazardous Energy

• 1. Primary energy is the energy (e.g. electricity) which

flows into a system from outside.

• 2. Stored energy is energy that (remains) build up in

system and is present even after primary energy sources have been isolated.

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• A danger zone is the area around a machine or process

(i.e., front, back, sides, top and bottom) where a hazard is created by the motion of the machine components, or by energized equipment or by stored energy.

• Access to the danger zone may be required to complete

specific repetitive operational tasks, during maintenance tasks, inspection, or when guards must be removed for the completion of a task.

What’s a Danger Zone?

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Two Ways of Controlling Hazardous Energy

There are two ways to control hazardous energy to make a danger zone safe for entry: 1. Isolation: uses a mechanical isolating device to physically prevent the energy flow (e.g. circuit breaker, disconnect switch, valve, block, pin, or blanking flange). A lock is applied to the isolating device. 2. Control reliable interrupt: uses control power to interrupt the flow of energy to a process, equipment, machine or device. A personal lock is applied to a switch or interlocked access gate mechanical latch device.

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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• Every employee who is required to lock out will be issued at least one

personal safety lock.

• YOU will NOT personally isolate any live equipment.
• All isolations will be performed by trained and

competent employees.

• No employee will work on equipment or enter an

area secured with another person’s lock. Personal safety locks must be:

• Individually keyed or keyed alike;
• Supplied with one unique key;
• Long shanked;
• Identified with name of user and either

their department or perm number on the lock or on a tag, and;

• Used only by person identified on the tag

One Person – One Lock Principle

Using a Personal Safety Lock

Your personal safety lock could be used to lock out:

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QMB Switch Electrical Breaker CRI Rotary Switch Lock Box Gate/Globe Valve Vent/Drain Valve Line Blind Blocking Device

Our “RULE”

“You must lock out, when required” is one of Dofasco’s four mandatory “Rules” protecting employees from “Life Threatening Situations”.

• STOP. CHALLENGE. CHOOSE.

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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4-Step Isolation Process

An isolation is achieved only when the following four steps are complete:

Step 1 Isolation Step 2 Locking Step 3 Dissipation Step 4 Verification

Isolating applicable components of the machine from all power sources Locking the device in the isolated (safe) position Dissipating or restraining any stored energy Verifying isolation effectiveness (i.e., checking or testing that all hazardous energy is eliminated or controlled).

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Lock Box Isolation (Multiple Isolation Devices) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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Personal Lock Applications

Equipment Isolation (single devices) Lock Box Isolation (multiple isolation devices) Controlled Reliable Interrupt (CRI) You will use your personal safety lock on any of these 3 personal lock applications.

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Single Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

Single Devices

(Simulation staged in L&D workshop)

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You may be required to apply your personal safety lock directly to an isolation device. Example: This electrical disconnect switch is used to isolate electrical energy to equipment. A trained and competent employee will perform the isolation (isolating the device in the designated ‘safe’ isolated position). They first check the ID tag to ensure this is the correct isolation device.

Step 1 Isolation

Here the electrical disconnect switch is placed in the “Safe”

• r “Off” position (open).

Single Devices

(Simulation staged in L&D workshop)

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You can now attach your personal safety lock to the isolation device. Step 2 Locking

Single Devices

(Simulation staged in L&D workshop)

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The procedure indicates there is no stored energy and no requirements to control or restrain this equipment. Step 3 Dissipation

Single Devices

(Simulation staged in L&D workshop)

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They test the isolation by pushing the “Start” button. The competent person will demonstrate how to test the isolation. Here they check inside the window to see that the knife blades are fully separated. With your lock on the isolation device, you are now safe to work. Tips of knife switch blades visible (painted red for demonstration purposes only)

Step 4 Verification

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

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Group Isolations (Use of Lock Box)

This is a lock box with many personal safety locks attached. This is used when there are multiple devices in the field which need to be locked out.

Lock Box Process

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The Lock Affixer follows an approved isolation procedure and isolates all devices... Then a “Lock Verifier” repeats the steps checking that all isolations are complete. In group isolations, a “Lock Affixer” and a “Lock Verifier” (who must be trained and competent), perform multiple isolation device lock outs using the 4 steps of isolation. Both the “Lock Affixer” and “Lock Verifier” complete an ELOR “Equipment Lock Out Report” documenting all steps and then sign and date it.

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Lock Box Process

(Simulation staged in L&D workshop) Once the isolation is complete, the ELOR and the key(s) to the multiple lock set are handed off to the person designated to be the “LOCK BOX CONTROLLER”. The key(s) are placed inside a designated lock box … … and the completed, signed and dated ELOR is also placed inside the lockbox so it is easily readable. The lock box is closed and the Lock Box Controller places their personal safety lock on the box. A best practice is to put the Lock Box Controller lock in the ‘red zone’. This is always the first lock on the box and will be the last lock off. No one will be able to access the key(s) inside the box until a Lock Box Controller removes this lock.

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Lock Box Isolations – YOUR ROLE

Lock Box Controller’s Lock on Lock Box Check the ELOR to ensure the isolation device for YOUR task is included Check that ELOR has been completed and signed by a Lock Affixer and Lock Verifier Now you can attach YOUR personal safety lock to the box. Key visible and identifiable inside the Lock Box.

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YOUR Personal Safety Lock

If YOU are going to perform work under the approved isolation procedure, you must check the ELOR to ensure that the isolation device(s) in YOUR procedure matches the device(s) listed on the ELOR. You must also verify that the lock set key is visible and identifiable inside the lock box … Once this is done, you can attach your personal safety lock to the lock box. YOU are now safe to start working. … and that the Lock Box Controller lock has been applied.

ELOR (Equipment Lockout Report)

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You are now safe to work

The lockbox now cannot be opened and the key(s) to the multiple lock set(s) cannot be removed until ALL personnel and the Lock Box Controller have removed their locks from the lockbox. If a lock box is found unlocked with the key(s) inside, the isolation is “void”. Work MUST stop and an accident investigation conducted.

• Stop. Challenge. Choose.

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

What is a ‘Control Reliable Interrupt’?

• A control reliable interrupt uses an engineered system to isolate control

power to control the sources of hazardous energy of a system, equipment, machine or device (e.g. light switch).

• These engineered safety circuits are used when frequent access is

required into a “danger zone” to perform regular, repetitive tasks. A standard isolation may be impractical or time consuming.

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Control Reliable Interrupts (CRI’s)

(Simulation staged in L&D workshop)

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To enter the danger zone, the “Request to Enter” position is selected. Once all hazardous energy has been controlled, the “Safe to Enter” light will come on … … and the gate will automatically unlock (green LED on the lock will turn on) The mechanical latch on the gate can now be opened

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To enter the ‘danger zone’, you must first apply your personal safety lock … either On the safety gate mechanism … OR … on the “Request to Enter” switch on the panel You are now safe to enter the area and begin work

Control Reliable Interrupts

(Simulation staged in L&D workshop)

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Control of Hazardous Energy One Person / One Lock Principle – YOUR Role 4-Step Isolation Process Individual Devices Group Isolations (Use of Lock Box) Control Reliable Interrupt (CRI) Remove Your Lock Test Questions Personal Lock Applications

Remove Your Lock !!!!!!

• At the completion of the job, or at the completion
• f your shift (if the job lasts longer than one shift),

remember to remove your lock.

• Personal safety locks shall NOT be removed other

than by the person named on the lock.

• If you forget to remove your lock and it is absolutely necessary that

the equipment be used, local Leadership will attempt to contact you to return to work to remove your safety lock.

• If you are unable to return to work and remove your safety lock, a

special written “Lock Removal Process” must be followed. Approval from appropriate levels of the local Leadership is required before a personal safety lock may be cut off.

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After this training module you should be able to;

• 1. Give examples of the different types of hazardous energy
• 2. Understand the difference between primary and stored energy
• 3. Explain the term “danger zone”
• 4. Describe the two ways of controlling hazardous energy
• 5. Understand the 4-step isolation process
• 6. Describe the concept of “one person, one lock”
• 7. Understand how to apply your personal lock to a single device
• 8. Know the steps of applying your personal lock to a group lockbox
• 9. Understand a “control reliable interrupt” safety circuit and how to

apply your personal safety lock

Any Questions or Concerns???

Review of our Learning Objectives