Presentation on theme: "Lockout/Tagout (Control of Hazardous Energy) Suzanne Reister/Paula Vanderpool North Central ESD 171 509-667-7100/7110."— Presentation transcript:
Lockout/Tagout (Control of Hazardous Energy) Suzanne Reister/Paula Vanderpool North Central ESD /7110
PURPOSE To acquaint you with DOSH’s lockout and tagout rules, WAC , as they apply to school districts.
What will be covered Energy sources LO/TO definitions Lockout devices Energy Control program requirements LO/TO procedures Employee training requirements Required periodic reviews How to use the sample plan
To whom these provisions apply The requirements apply to the service and maintenance of machines and equipment in which the unexpected energization or start up of the machine or equipment or release of stored energy could cause injury to employees. It establishes the requirements to ensure that equipment or systems are isolated from all potentially hazardous energy and are locked out or tagged out before any employees provide any service or maintenance.
1.Electrical Electricity - live or stored Live electrical lines Electrical capacitors 2.Mechanical Moving machinery parts Stored mechanical movement machinery Engines that move machinery parts Springs Energy sources
3. Chemical Chemical in pipelines under pressure or force or gravity 4. Thermal (hot or cold) Stored heat (steam lines or hot liquid) 5. Hydraulic (pressurized liquid) Hydraulic lifts Energy sources
6.Pneumatic (pressurized gas or air) Pneumatic (air pressure) lines 7.Other energy, including gravity Energy sources
What kinds of injuries can happen from hazardous energy Electrocution from live parts Scalding from steam or hot liquids Chemical burns or poisoning From machinery: Deep cuts and gashes, crushing injuries, amputations A man working inside a supermarket cardboard compactor was crushed when the unblocked compactor suddenly came down on top of him.
Definitions Lockout - The placement of a lockout device on an energy isolating device so that the equipment being controlled cannot be operated until the lockout device is removed. Tagout - The placement of a tagout device to an energy isolating device to indicate that the equipment being controlled may not be operated until the tagout device is removed. Note: Lockout must be used if available.
An energy-isolating device A device that physically prevents transmission or release of energy, such as: An electrical circuit breaker A pipeline valve A machine block Anything that positively blocks or isolates energy
Means to control energy Ways to isolate, secure or block machines and equipment from energy sources *Locks*Adapter pins *Tags *Key blocks *Chains*Blind flanges *Wedges*Cribbing *Self-locking fasteners
A lockout device A device that positively: Prevents a machine from being started up or turned on, Prevents a machinery part from moving, Prevents electrical energizing, Blocks a pipeline, steam line or air line Lockout devices must be distinctive in design and durable
Electrical lockout devices Locked out electrical panel (group lockout hasp) Locked out circuit breaker (permanent system) Plug lockout device Note - There is an exemption for electrical cords if always under the control of the servicing employee.
Tagout Tags are warning devices only. They don’t provide the same level of protection as lockout devices. They can only be removed by an authorized person. They must be legible, securely attached and resistant to degradation.
Energy Control Program Must be written Include the scope, purpose, authorization, rules and techniques to control hazardous energy Include specific energy control procedures Designate facility specific lockout and tagout devices Delineate employee training Inform contractors of district’s procedures Annually review effectiveness of lockout and tagout procedures
Energy control procedures Used to protect employees servicing or maintaining equipment from potentially hazardous energy. A lockout system must be used if an energy- isolating device can be locked out. If not, a tagout system must be used. Similar machines and equipment may be covered by a single written procedure if they use the same types of energy, they have similar controls, they are identified by type and location. Order new equipment so it can be locked out.
Energy control procedures Must clearly and specifically outline the scope, purpose, authorization, rules and techniques to control hazardous energy and how you’ll make sure employees follow the procedures. Specify: –When the procedure must be used –What the procedures are for shutting down, isolating, blocking and securing the equipment and for placing, removing, and transferring lockout or tagout devices and who is responsible for them –How to test the equipment to verify effectiveness of lockout/tagout
Energy control procedures - exemption Written energy control procedures are not required if all these are true: The equipment has only one energy source Locking out the single energy source completely deenergizes it There is no stored or residual energy The single energy source can be locked out with a single lockout device The equipment is isolated and locked out during service or maintenance The authorized employee performing the service or maintenance has exclusive control of the lockout device Service or maintenance doesn’t create a hazard for other employees The equipment has never unexpectedly energized or activated during service or maintenance.
School equipment that may require lockout/tagout HVAC equipment, fans and heater Motorized equipment Boilers and pressure vessels Hard-wired electrical lights Pumps and pressurized tanks Hard-wired shop equipment Kitchen equipment Overhead lights and electrical outlets
When someone will be servicing or repairing machinery or equipment AND the unexpected machinery start-up or release of stored energy could cause injury This includes installing, constructing, adjusting, modifying, unjamming, cleaning, lubrication, inspecting, and/or setup. Lockout/tagout is required
Lockout/tagout procedures 1.Notify affected employees that machine or equipment will be shut down and locked/tagged out 2.Shut down the machinery or equipment 3.Isolate energy sources with energy-isolating devices 4.Lockout/tagout energy-isolating devices with assigned locks/tags 5.Release or restrain stored or residual energy 6.Test machinery to make sure it can’t start up before starting work Notify employees 1 Shut down equipment 2 Isolate energy 3 Attach lockout device 4 Release stored energy 5 Verify lockout 6 Then begin work!
Only the authorized employee can do startup All are warned to stay clear Remove all tools, locks and tags Remove, reverse, open or reactivate isolating devices Visually check that all is clear Start up machine, process or line flow Startup procedures ( Removing LO/TO devices)
Considerations for shift changes - Ensure the orderly transfer of LO/TO protection and devices Considerations for employees in groups - Ensure that everyone uses LO/TO, and that a primary authorized employee is responsible for the group Contractor or outside service personnel - Inform outside workers of the district LO/TO procedures and ensure they are followed Other lockout/tagout issues
Authorized employees – People who lock or tag out machines or equipment to perform servicing. They need in-depth training in hazards and protective systems: To understand the purpose and function of the ECP To know energy control procedures To be able to appropriately use lockout/tagout devices For each type of equipment or machine serviced or maintained, to know: – The type and magnitude of energy – The hazards of the energy to be controlled – The methods or means to control the energy Who needs training
Affected employees – People who use machines or equipment on which servicing is performed under lockout/tagout. Other employees – People who work in the area of locked out machinery or equipment. These employees need awareness training that includes: ECP procedures and protective systems being used Prohibition against bypassing lockout/tagout Recognize lockout/tagout devices used Who needs training, continued Note: This awareness training can be done as part of new employee safety orientation
Additional required training for tagout To ensure that employees understand that tags are warning devices only and not as protective as locks How to use tags, which may be placed differently than locks Retrain when needed When new equipment is installed When energy control procedures are revised When employees don’t follow EC procedures Other LO/TO training
*Required at least annually *Done by an authorized employee (not doing LO/TO at the time) *Review of whether employees follow district energy control procedures *Review both lockout and tagout practices *Document reviews (see sample form) Periodic reviews of energy control procedures
How to modify the sample plan ˚Add your school district name (and page numbers may be helpful) ˚Complete “LO/TO Energy Source Determination” forms for all equipment or machines that employees may maintain or service Also: ˚Determine authorized employees ˚Establish employee training (for authorized employees and others) ˚Designate a qualified person to do periodic inspections and annual review