Lockout/Tagout Procedures

Policy 303.14

Introduction

This procedure establishes the minimum requirements for the lockout and/or tagout of electrical disconnects, liquid, gas and steam valves, hydraulic/pneumatic systems or other energy sources. It shall be used to ensure that machines or equipment are stopped and isolated from all potentially hazardous energy sources, and locked out and/or tagged out before employees perform any servicing or maintenance activities where the unexpected start-up or release of stored energy could cause injury.

Scope

This procedure applies whenever an employee is servicing or provides maintenance to machinery or equipment in a manner which requires the removal or bypass of guards or other safety devices or in a manner that requires an employee to place any part of his or her body into an area on a machine or piece of equipment where work is actually performed upon the material being processed (point of operation) or where an associated danger zone exists during a machine operating cycle, or in a manner that otherwise exposes the employee to electrical, mechanical, gas, liquid or steam hazards in the event the machinery or equipment or system is accidently re-energized during maintenance or service work. Typical operations covered include, but are not necessarily limited to:

1. Work on electric motors and circuits 2. Work on steam lines and boilers 3. Work on refrigeration and air conditioning equipment 4. Work on LP gas lines 5. Work on permanently wired machinery or equipment including ovens 6. Work on wood planners, radial saws or other shop and laboratory equipment 7. Work on pressurized liquid or chemical lines 8. Work on compressed air or gas (chemical) lines 9. Work on hydraulic/pneumatic systems 10. Work on elevators/hoists

Employees authorized to Lockout and/or Tagout after receiving appropriate training in the appropriate lockout and/or tagout procedures include:

• Art Department Laboratory Manager
• ASU Physical Plant - Mechanical Shop, Electrical Shop, Steam Plant, Telecommunications/Electronics Shop, Carpentry Shop employees
• Housing Department Maintenance employees
• Food Service Maintenance employees
• Student Union Maintenance employees
• Broyhill Inn & Conference Center Maintenance employees
• Technology Department Electronics Technician
• Outside Vendors and Contractors approved and assisted by Physical Plant Employees

Definitions

Affected employee. An employee whose job requires him/her to operate or use a machine or equipment on which servicing or maintenance is being performed under lockout and/or tagout, or whose job requires him/her to work in an area in which such servicing or maintenance is being performed.

Authorized employee. A person who locks out and/or tags out machines or equipment in order to perform servicing or maintenance on that machine or equipment. An affected employee becomes an authorized employee when that employee's duties include performing servicing or maintenance covered under this section.

Capable of being locked out. An energy isolating device is capable of being locked out if it has a hasp or other means of attachment to which, or through which, a lock can be affixed, or it has a locking mechanism built into it. Other energy isolating devices are capable of being locked out, if lockout can be achieved without the need to dismantle, rebuild, or replace the energy isolating device or permanently alter its energy control capability.

Energized. Connected to an energy source or containing residual or stored energy.

Energy isolating device. A mechanical device that physically prevents the transmission or release of energy, including but not limited to the following: A manually operated electrical circuit breaker; a disconnect switch; a manually operated switch by which the conductors of a circuit can be disconnected from all ungrounded supply conductors, and, in addition, no pole can be operated independently; a line valve; a block; and any similar device used to block or isolate energy. Push buttons, selector switches and other control circuit type devices are not energy isolating devices.

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

Hot tap. A procedure used in the repair, maintenance and services activities which involves welding on a piece of equipment (pipelines, vessels or tanks) under pressure, in order to install connections or appurtenances. It is commonly used to replace or add sections of pipeline without the interruption of service for air, gas, water, steam, and petrochemical distribution systems.

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. A device that utilizes a positive means such as a lock, either key or combination type, to hold an energy isolating device in a safe position and prevent the energizing of a machine or equipment. Included are blank flanges and bolted slip blinds.

Normal production operations. The utilization of a machine or equipment to perform its intended production function.

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

Setting up. Any work performed to prepare a machine or equipment to perform its normal production operation.

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. A prominent warning device, such as a tag and a means of attachment, which can be securely fastened to 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.