Lock Out Tag Out (LOTO). Outline. Importance of Lock Out/Tag Out (LOTO) OSHA’s Control of Hazardous Energy standard. Why is LOTO important?.
Importance of Lock Out/Tag Out (LOTO)
OSHA’s Control of Hazardous Energy standard
The Lock Out/Tag Out procedure prevents the unexpected start up or release of stored energy that could cause injury to employees by placing a lock and/or warning tag on an energy isolation device.
Federal: Occupational Safety and Health Administration (OSHA)
State: Montana Occupational Safety & Health Bureau (MOSHB)
Mechanical (i.e. motors, drive belts)
Chemical (i.e. natural gas, propane)
Coordinate the LOTO program;
Training & assistance with annual inspections;
Maintain copies of equipment specific lock out procedures, annual inspections & training records; and
Update & evaluate the LOTO program annually.
Notify contractors to bring their LOTO program to preconstruction meeting; and
Include LOTO as an agenda item & allow contractors & Employees to discuss
Contractor & on-site employer must exchange LOTO info
On-site employees must understand & comply with the contractor’s rules.
Employees must be alert & aware of any new types of LOTO devices.
Must be singularly identified;
Must be the ONLY devices for controlling energy; and
Must NOT be used for any other purposes.
Lock Out devices must be durable & withstand the environment to which they are exposed. Tag out devices must be constructed & printed so they do not deteriorate or become illegible;
LO/TO devices must be standardized by color, shape or size;
LO/TO devices must be substantial enoughto prevent early or accidental removal and removal without excessive force.
Lock out will be accomplished using a lock and key. Chains, or other hardware, may be used in conjunction with the lock to isolate the energy source.
One key will be issued to the authorized employee applying the lock.
Tag Out devices must include a legend such as: DO NOT START, DO NOT OPEN, DO NOT CLOSE, DO NOT ENERGIZE, DO NOT OPERATE, etc.
Tag Out devices must have standardized print and format.
An approved warning tag should accompany all lockouts.
The warning tag should be attached directly to the lockout device by a nylon tie.
Preparation for shutdown
Shutting down the equipment
Application of LOTO devices
Release of stored energy
Verifying equipment isolation
Know the types and amounts of energy that power specific equipment
Know the hazards of that energy
Know how the energy can be controlled – review equipment specific procedures if necessary
Direct any questions to immediate supervisor
Lock Out / Tag Out energy isolating sources with assigned locks and tags. Usually requires locking out electrical disconnect.
Be sure to isolate ALL energy sources (secondary as well as primary).
Use valve covers, plug locks, etc. if the lock can’t be placed directly on the energy control.
When Lock Out is used, every employee in the work crew must attach their own personal lock.
A Tag Out system alone is not acceptable at any time unless the equipment is not capable of being locked out.
The tag must be placed at the same location that the lockout device would have been attached, and additional measures must be taken to ensure the level of safety is equivalent to that obtained by using a lock.
This includes: blocking of a controlling switch, removal of an isolating circuit element, opening of an extra disconnect device, or removal of a valve handle ONLY.
Inspect the system to make sure all parts have stopped moving.
Disperse stored energy (springs, hydraulic systems, air, gas, water pressure, or steam).
If stored energy can build up again, monitor it to make certain it stays below hazardous levels.
Make certain all dangerous areas are clear of personnel.
Verify that the equipment cannot be turned to the “on” position.
Press all “start” buttons and activating controls on the equipment.
Return all controls to the “off” position after certain that Lock Out is effective.
Work on cord & plug equipment IF it is unplugged, the plug remains within arms reach during servicing and authorized employee has exclusive control of the plug.
If guards aren’t removed or bypassed & are effective in preventing worker exposure to hazards created by the unexpected energization or start up of machines or equipment, or the release of energy.
Occupational Safety and Health Administration
Montana Occupational Safety and Health Bureau