Lock out tag out إجراءات العزل الكهربي скачать в хорошем качестве

Lock out tag out إجراءات العزل الكهربي

#safety, #Electrical, #Construction_Safety What is Lockout/Tag out? Lockout is one way to control hazardous energy. See the OSH Answers Hazardous Energy Control Programs for a description of the types of hazardous energy, and steps required in a control program. Tag out is a labelling process that is always used when lockout is required. The process of tagging out a system involves attaching or using an information tag or indicator (usually a standardized label) that includes the following information: Why the lockout/tag out is required (repair, maintenance, etc.). Time of application of the lock/tag. The name of the authorized person who attached the tag and lock to the system. Note: ONLY the authorized individual who placed the lock and tag onto the system is the one who is permitted to remove them. This procedure helps make sure the system cannot be started up without the authorized individual's knowledge. What is the purpose of a lockout/tag out program? A lockout/tag out program will help prevent: Contact with a hazard while performing tasks that require the removal, by-passing, or deactivation of safe guarding devices. The unintended release of hazardous energy (stored energy). The unintended start-up or motion of machinery, equipment, or processes. What does de-energization mean? De-energization is a process that is used to disconnect and isolate a system from a source of energy in order to prevent the release of that energy. By de-energizing the system, you are eliminating the chance that the system could inadvertently, accidentally or unintentionally cause harm to a person through movement, or the release of heat, light, or sound. What details should the lockout procedures and work instructions contain? The written lockout procedures will identify types of hazardous energy covered by the procedures, types of energy-isolating or de-energizing devices, what needs to be done, when it needs to be done, what tools are needed to do it, who is supposed to do it, how the shutdown/de-energization/energization/start-up will occur, who required education and training, and who needs to be notified. As with all programs or procedures, a continuous improvement or auditing step should also occur. What are the basic steps of locking and tagging out a system? Lockout and tag out processes involve more than putting a lock on a switch. They are comprehensive step-by-step processes that involve communication, coordination, and training. Steps of a lockout/tag out program include: 1. Prepare for shutdown This step involves completing sets of specific work instructions that outline what controls and practices are needed to lock and tag out a system before performing any activity. 2. Notify all affected employees The authorized person will communicate the following information to notify affected persons: What is going to be locked/tagged out. Why it is going to be locked/tagged out. For approximately how long will the system be unavailable. Who is responsible for the lockout/tag out. Who to contact for more information. 3. Equipment Shutdown Equipment shutdown involves ensuring controls are in the off position, and verifying that all moving parts such as flywheels, gears, and spindles have come to a complete stop. 4. Isolation of system from hazardous energy Electrical energy - Switch electrical disconnects to the off position. Visually verify that the breaker connections are in the off position. Lock the disconnects into the off position. Electrical lockout 5. Dissipation (removal) of residual or stored energy Electrical energy - To find a specific method to discharge a capacitor for the system in question, contact the manufacturer for guidance. Many systems with electrical components, motors, or switch gears contain capacitors. Capacitors store electrical energy. In some cases, capacitors hold a charge and may release energy very rapidly 6. Lockout/Tag out Each lock should only have one key (no master keys are allowed). There should be as many locks on the system as there are people working on it. For example, if a maintenance job requires 3 workers, then 3 locks should be present - each of the individuals should place their OWN lock on the system. Locks can only be removed by those who installed them, and should only be removed using a specific process 7. Verify Isolation Verify that the system is properly locked out before beginning any work. Verification can take place in several ways: The machine, equipment, or process controls (push buttons, switches, etc.) are engaged or activated and the result is observed. No response means isolation is verified. Return controls to the safe position (off). T8. Perform Maintenance or Service Activity Complete the activity that required the lockout process to be started. 9. Remove Lockout/Tag out devices To remove locks and tags from a system that is now ready to be put back into service, the following general procedure can be used: