COHE: LOTO

Control of

Hazardous Energies

Lock-Out/Tag-Out

RULE 1412.03: Electrical (OSHS)

Before

construction

Prevent

electrocution

During

construction

Barriers to

avoid contact/

or making

apparatus

electrically dead

RULE 1412.04: Machine Guarding (OSHS)

All moving parts

of machinery

Shall be

guarded

To prevent

physical contact

with persons or

objects not part

of it

RULE 1412.08: Pipelines (OSHS)

Pipelines under

pressure

Release the pressure Blocked-off the line

pressure

What is a hazardous energy?

Any form of energy, in an

uncontrolled state, which

presents a POTENTIAL

for injury to person/s or

damage to property/ies.

Types of Hazardous Energies

Electrical: voltage, current, static electrical potentials,

RF

Chemical: reaction, fire, explosion

Mechanical: shearing, rolling, crushing, pinching

Thermal: hotter than 113°F/45°C, colder than 39°F/4°C

Potential or stored energy: batteries, springs,

capacitors

Other: laser, ionizing & non-ionizing radiation,

pneumatic, hydraulic, gravitational, pressure

Lockout (LO): The placement of a physical

restraining energy isolating device, which ensures

that the system cannot be operated or cannot

release a hazardous energy.

Tagout (TO): The placement of a warning/

identification tag on an energy isolating device to

indicate that the system must not be operated. It

also identifies the person who applied the lock/tag,

and how to contact that person.

Terms and Definitions

Various Types of Padlocks

Lockout Identifier Labels

Hazardous Waste Tag

Transmission Line Tags

Situations Requiring

Lockout/Tagout (LOTO)

• Servicing, maintaining, or repairing any equipment

where hazardous energies are present. (Moving parts

may create a safety hazard.)

• Working on pipe lines that carry hazardous

chemicals, in gas and liquid forms, which are high-

pressure, toxic, corrosive, etc.

• Working on electrical circuits and systems to prevent

the risk of electrical shock, flash, or blast.

• Working near other hazardous energies that could

result in the unintentional release of stored energy,

causing injury.

LOTO PROCEDURES

1. Locate equipment to be de-energized. Notify

supervisors and operators. Contact electrician

to identify the starter or main switch.

2. Shutdown machinery or equipment by normal

stopping procedure.

3. Neutralize all stored energy.

4. Lockout devices shall be affixed to the energy

isolating device in the off position by authorize

employee.

LOTO PROCEDURES

5. Sign, date and attach a lockout tag to the

disconnected switch, valves and other similar

devices. NEVER RELY ON TAGS ALONE.

They should be used to record information.

6. After locking out equipment, attempt to re-start

using the starting controls.

7. After testing, return operating controls to

“neutral or off “ position. The equipment is now

locked out.

Machine Padlock Lockout Station

Circuit Breaker Lockout Kit

Cable Plug

Wall Switch

Lockout

Valve Lockout Kits

Round Valve Lockout

Ball Valve Lockout

Ball Valve Lockout Kits

RED - Fire quenching materials; YELLOW - Materials

inherently hazardous; BLUE - Gases of inherently low

hazard; GREEN - Liquids of inherently low hazard.

What A Typical Lockout/Tagout Looks

Like With a Personal Protection Lock.

What A Typical Lockout/Tagout Looks

Like With a Contractor & Personal

Protection Lock.

Valve Tag

Occasionally You May See a Yellow

Tag Without a Lock On a Piece of

Equipment That is Out of Service.

This machine is Tagged Out

because it Will Not Run.

The Tag Will Tell You What

Is Wrong With The

Equipment .

Never Attempt To Operate

Equipment That Has

Been Tagged .