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Maricopa County Subject: OSHA: Control of Hazardous Number: A2224 Policies and Procedures Energy (Lockout/Tagout) Requirements Issue Date: 02/92 RESCINDED: 5/20/2015 C-49-15-059-6-00 Approved: Roy Pederson Initiating Department: Risk Management A. Purpose To describe the control of hazardous energy (lockout/tagout) requirements. B. Policy The Occupational Safety and Health Act (OSHA 29CFR 1910.150 Control of Hazardous Energy Standard) requires that Maricopa County ensure all necessary requirements are being implemented by all affected County agencies or departments. Each department shall be responsible to ensure compliance with the Control of Hazardous Energy Standard (Lockout/Tagout) OSHA 1910.150, develop a program for each energy source as outlined in the standard and train employees in the proper control procedures. C. 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 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 or tags our 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 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, selectors 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, steams, and petrochemical distribution systems. Maricopa County Subject: OSHA: Control of Hazardous Number: A2224 Policies and Procedures Energy (Lockout/Tagout) Requirements Issue Date: 02/92 RESCINDED: 5/20/2015 C-49-15-059-6-00 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 black flanges and bolted slip blinds. Normal production operations: The utilization of a machine or equipment to perform its intended production function. Serving 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. D. Authority and Responsibility Agencies and departments are responsible for compliance with the control of Hazardous Energy (Lockout/Tagout) standard. E. Procedure 1. Elected officials and department heads shall develop, document procedures and techniques to be used for the Control of Hazardous Energy (Lockout/Tagout). 2. Typical minimal lockout procedure. The following simple lockout procedure is provided to assist departments in developing their procedures so they meet the requirements of this standard. When the energy isolating devices are not lockable, tagout may be used, provided the employer complies with the provisions of the standard which requires additional training and more rigorous periodic inspections. When tagout is used and the energy isolating devices are lockable, the employer must provide full employee protection and additional training; additionally more rigorous periodic inspections are required. For more complex systems, more comprehensive procedures may need to be developed, documented and utilized. Page 2 of 4 Maricopa County Subject: OSHA: Control of Hazardous Number: A2224 Policies and Procedures Energy (Lockout/Tagout) Requirements Issue Date: 02/92 RESCINDED: 5/20/2015 C-49-15-059-6-00 SAMPLE Lockout procedure for_______________________________ (Name of department for single procedure or identification of equipment if multiple procedures are used.) Purpose This procedure establishes the minimum requirements for the lockout of energy isolating devices whenever maintenance or servicing is done on machines or equipment. It shall be used to ensure that the machine or equipment is stopped, isolated from all potentially hazardous energy sources and locked out before employees perform any servicing or maintenance where the unexpected energization or start-up of the machine or equipment or release of stored energy could cause injury. Compliance With This Program All employees are required to comply with the restrictions and limitations imposed upon them during the use of lockout. The authorized employees are required to perform the lockout in accordance with this procedure. All employees, upon observing a machine or piece of equipment which is locked out to perform servicing or maintenance shall not attempt to start, energize or use that machine or equipment. Failure to adhere to this policy and procedure may result in disciplinary measure(s) under Maricopa County Merit System Rules. SEQUENCE OF LOCKOUT 1. Notify all affected employees that servicing or maintenance is required on a machine or equipment and that the machine or equipment must be shut down and locked out to perform the servicing or maintenance. 2. The authorized employee shall refer to the manufacturer's manual or operating guide to identify the type and magnitude of the energy that the machine or equipment utilizes, shall understand the hazardous of the energy, and shall know the methods to control the energy. 3. If the machine or equipment is operating, shut it down by the normal stopping procedure (depress stop button, open switch, close valve, etc.) 4. De-activate the energy isolating device(s) so that the machine or equipment is isolated from the energy source(s). 5. Lock out the energy isolating device(s) with assigned individual lock(s). 6. Stored or residual energy (such as that in capacitors, springs, elevated machine members, rotating flywheels, hydraulic systems, and air, gas, steam, or water pressure, etc.) must be dissipated or restrained by methods such as grounding, repositioning, blocking, bleeding down, etc. Page 3 of 4 Maricopa County Subject: OSHA: Control of Hazardous Number: A2224 Policies and Procedures Energy (Lockout/Tagout) Requirements Issue Date: 02/92 RESCINDED: 5/20/2015 C-49-15-059-6-00 7. Ensure that the equipment is disconnected from the energy source(s) by first checking that no personnel are exposed, then verify the isolation of the equipment by operating the push button or other normal operating control(s) or by testing to make certain the equipment will not operate. CAUTION: Return operating control(s) to neutral or "off" position after verifying the isolation of the equipment. 8. The machine or equipment is now locked out. RESTORING EQUIPMENT TO SERVICE When the servicing or maintenance is completed and the machine or equipment is ready to return to normal operating condition, the following steps shall be taken: 1. Check the machine or equipment and the immediate area around the machine or equipment to ensure that nonessential items have been removed and that the machine or equipment components are operationally intact. 2. Check the work area to ensure that all employees have been safely positioned or removed from the area. 3. Verify that the controls are in neutral. 4. Remove the lockout devices and re-energize the machine or equipment. NOTE: The removal of some forms of blocking may require re-energization of the machine before safe removal. 5. Notify affected employees that the serving or maintenance is completed and the machine or equipment is ready for use. Revision History Version Revision Date Description of Revision 1 February 1992 Initial version. Rescinded and replaced by Policy A2234: Injury and 2 20 May 2015 Illness Prevention Plan (C-49-15-059-6-00). Page 4 of 4