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The following is a list of glossary terms that you may find useful when navigating through the DEenergize website.

29 CFR 1910.1030 - OSHA Standard Covering Bloodborne Pathogens

The 29 CFR 1910.1030 OSHA standard covers all occupational exposure to blood or other potentially infectious materials.

29 CFR 1910.147 - OSHA Standard Covering the Control of Hazardous Energy (Lockout/Tagout)

The 29 CFR 1910.147 OSHA standard covers the servicing and maintenance of machines and equipment in which the unexpected energization or start up of the machines or equipment, or release of stored energy, could cause injury to employees. The standard establishes minimum performance requirements for the control of such hazardous energy.

Full text of the 29 CFR 1910.147 is available here.

29 CFR 1910.269 - OSHA Standard Covering Electric Power Generation, Transmission, and Distribution

The 29 CFR 1910.269 OSHA standard covers the operation and maintenance of electric power generation, control, transformation, transmission, and distribution lines and equipment.

29 CFR 1910.333 - OSHA Standard Covering Selection and Use of Work Practices

The 29 CFR 1910.333 OSHA standard outlines that safety-related work practices shall be employed to prevent electric shock or other injuries resulting from either direct or indirect electrical contacts when work is performed near or on equipment or circuits which are or may be energized. The specific safety-related work practices shall be consistent with the nature and extent of the associated electrical hazards.

Affected Employee - Affected Employee

An employee who performs the duties of his or her job in an area in which the energy control procedure is implemented and servicing or maintenance operations are performed. An affected employee does not perform servicing or maintenance on machines or equipment and, consequently, is not responsible for implementing the energy control procedure. An affected employee becomes an "authorized" employee whenever he or she performs servicing or maintenance functions on machines or equipment that must be locked or tagged.

Assigned Individual Lock - Individual Lock Issued to an Employee

A padlock or combination lock issued to an employee for which no other person has the key, combination, or means of opening without using destructive force. The lock shall be uniquely identified and shall not be used for any other purpose.

Authorized Employee - Authorized Employee

An employee who performs servicing or maintenance on machines and equipment. Lockout or tagout is used by these employees for their own protection.

Blocked - Blocked Energy

A condition where a mechanical device is inserted into the energy path to physically prevent movement. Most commonly used with mechanical machinery or fluid-filled lines.

Capable of Being Locked Out - An Energy-Isolating Device Capable of Being Locked Out

An energy-isolating device is considered capable of being locked out if it meets one of the following requirements:

  • It is designed with a hasp to which a lock can be attached;
  • It is designed with any other integral part through which a lock can be affixed;
  • It has a locking mechanism built into it; or
  • It can be locked without dismantling, rebuilding, or replacing the energy-isolating device or permanently altering its energy control capability.

Compliance - Regulatory Compliance

Regulatory compliance describes the goal that corporations or public agencies aspire to in their efforts to ensure that personnel are aware of and take steps to comply with relevant laws and regulations.

Contractor - Contract Employees

A person or business which provides goods or services to another entity under terms specified in a contract. Unlike an employee, a contractor does not work regularly for a company. In manufacturing environments the "contractor" typically services machinery/equipment such air handling units, custom machinery, etc.

Control of Hazardous Energy - Lockout/Tagout

See Lockout/Tagout.

Dissipated - Dissipated Energy

A condition where all stored energy has been reduced to a non-hazardous level. Most commonly used with energy-storing devices, such as capacitors, pressure receivers, or springs.

Energized - Energized Machines and Equipment

Machines and equipment are energized when:

  • they are connected to an energy source or
  • they contain residual or stored energy.

Energy Control Procedure - Energy Control Procedure

A written document that contains those items of information an authorized employee needs to know in order to safely control hazardous energy during servicing or maintenance of machines or equipment. Examples of Lockout/Tagout energy control procedures are available here.

Energy Control Program - Energy Control Program

A program intended to prevent the unexpected energizing or the release of stored energy in machines or equipment on which servicing and maintenance is being performed by employees. The program consists of energy control procedure(s), an employee training program, and periodic inspections. Additional information about energy control programs is available here.

Energy Source - Energy Source

Any source of electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or other energy.

Energy-Isolating Device - Energy-Isolating Device

Any mechanical device that physically prevents the transmission or release of energy. These include, but are not limited to, manually operated electrical circuit breakers, disconnect switches, line valves, and blocks.

Hazard Zone - Space Around a Source of Hazardous Energy

The space around a source of hazardous energy where a person could be harmed if the hazardous energy was suddenly or unexpectedly released; such as the unexpected release of stored pressure, the unexpected movement of a machine, or the spray from a hazardous chemical that was unexpectedly released.

Hazardous Energy - Energy with Potential to Cause Injury

Energy that has the potential to cause injury or harm to people if released where the impact would be moderate or greater.

Hazardous Energy Control - Lockout/Tagout

See Lockout/Tagout.

High-Voltage System - More than 600 Volts

Associated electrical conductors and equipment operating at or intended to operate at a sustained voltage of more than 600 volts.

Isolated - Isolated Energy

A condition where all sources of hazardous energy have been controlled by breaking the energy path so that the energy cannot flow to workers. The term "isolated" is commonly used with electrical circuits and fluid lines.

Lockout - Energy Control Lockout

The placement of a lockout device on an energy-isolating device, in accordance with an established procedure, ensuring that the energy-isolating device and the equipment being controlled cannot be operated until the lockout device is removed.

Lockout Device - Energy Control Lockout Device

Any device that uses positive means, such as a lock, either key or combination type, to hold an energy-isolating device in a safe position, thereby preventing the energizing of machinery or equipment. When properly installed, a blank flange or bolted slip blind are considered equivalent to lockout devices.

Lockout/Tagout - Control of Hazardous Energy

Lockout/Tagout, also known as LOTO or lock and tag, refers to specific practices and procedures to safeguard employees from the unexpected energization or startup of machinery and equipment, or the release of hazardous energy during service or maintenance activities.

Lockout/Tagout compliance requirements are defined by the United States Department of Labor under OSHA Lockout/Tagout standard 29 CFR 1910.147.

Low-Voltage System - 600 Volts or Less

Associated electrical conductors and equipment operating at or intended to operate at a sustained voltage of 600 volts or less.

Maintenance - Machine or Equipment Maintenance

Workplace activities such as constructing, installing, setting up, adjusting, inspecting, modifying, maintaining and/or servicing machines or equipment, including lubrication, cleaning or unjamming of machines or equipment, and making adjustments or tool changes, where employees could be exposed to the unexpected energization or startup of the equipment or release of hazardous energy.

NFPA - National Fire Protection Association

NFPA's mission is creating and maintaining minimum standards and requirements for fire prevention and suppression activities, training, and equipment, as well as other life-safety codes and standards. This includes everything from building codes to the personal protective equipment utilized by firefighters while extinguishing a blaze.

OSHA - Occupational Safety and Health Administration

OSHA is a government agency in the US Department of Labor. OSHA's mission is to prevent work-related injuries, illnesses, and deaths. Since the agency was created in 1971, occupational deaths have been cut by 62% and injuries have declined by 42%.

Potential Energy - Potential or Stored Energy

See Stored Energy.

Servicing - Machine or Equipment Servicing

See Maintenance.

Stored Energy - Stored or Potential Energy

The stored energy that can be drawn upon to do work. Examples of stored energy are suspended loads, compressed springs, capacitors, pneumatic or hydraulic accumulators, etc.

Tagout - Energy Control Tagout

The placement of a tagout device on an energy - isolating device, in accordance with an established procedure, to indicate that the energy - isolating device and the equipment being controlled may not be operated until the tagout device is removed.

Tagout device - Energy Control Tagout Device

Any prominent warning device, such as a tag and a means of attachment, that can be securely fastened to an energy-isolating device in accordance with an established procedure. The tag indicates that the machine or equipment to which it is attached is not to be operated until the tagout device is removed in accordance with the energy control procedure.


Title: Glossary
URL: http://www.deenergize.com/?target=Glossary
Printed: Monday December 4th, 2023

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