18858770469+8618858770469cnsn_linder or linder@cnntele.cn linder@cnntele.cn
You are here: Home » News

Lockout-tagout (LOTO) or lock and tag is a safety procedure which is used in industry and research settings to ensure that dangerous machines are properly shut off and not able to be started up again prior to the completion of maintenance or servicing work. It requires that hazardous energy sources be "isolated and rendered inoperative" before work is started on the equipment in question. The isolated power sources are then locked and a tag is placed on the lock identifying the worker who has placed it. The worker then holds the key for the lock ensuring that only he or she can start the machine. This prevents accidental startup of a machine while it is in a hazardous state or while a worker is in direct contact with it. Lockout-tagout is used across industries as a safe method of working on hazardous equipment and is mandated by law in some countries. Group lockout When two or more workers are working on different parts of a larger overall system, the locked-out device is first secured with a folding scissors clamp that has many padlock holes capable of keeping it closed. Each worker applies their own padlock to the clamp. The locked-out device cannot be activated until all workers have signed off on their portion of the project and removed their padlock from the clamp. Compliance If employees service or maintain machines where the unexpected startup, energization, or the release of stored energy could cause injury, the OSHA standard applies, unless an equivalent level of protection can be proven. Equivalent level of protection may be achieved in some cases through SOP (standard operating procedures) and custom machine guarding solutions that are combined to establish machine control to protect the worker for specific tasks. The standard applies to all sources of energy, including, but not limited to: mechanical, electrical, hydraulic, pneumatic, chemical, and thermal energy.


Safety padlocks serve to lockout a specific piece of equipment or machinery, or even an entire area during preventive maintenance or repair. They are an integral part of industrial safety measures and are of equal importance in any environment housing heavy machinery or electrical installations. Safety padlocks are hard to get past, and prove more effective in restricting access than safety tags and other purely visual indications, which may go unnoticed. Here are some factors that can help with the selection.

OSHA Lockout/Tagout Facts
OSHA Lockout/Tagout Facts2017-02-20

What is the OSHA standard for control of hazardous energy sources? The OSHA standard for The Control of Hazardous Energy (Lockout/Tagout), Title 29 Code of Federal Regulations (CFR) Part 1910.147, addresses the practices and procedures necessary to disable machinery or equipment, thereby preventing the release of hazardous energy while employees perform Servicing and Maintenance activities. The standard outlines measures for controlling hazardous energies - electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and other energy sources. In addition, 29 CFR 1910.333 sets forth requirements to protect employees working on electric circuits and equipment. This section requires workers to use safe work practices, including Lockout and tagging procedures. These provisions apply when employees are exposed to electrical hazards while working on, near, or with conductors or systems that use electric energy. Why is controlling hazardous energy sources important? Employees Servicing or maintaining machines or equipment may be exposed to serious physical harm or death if Hazardous Energy is not properly controlled. Craft workers, machine operators, and laborers are among the 3 million workers who service equipment and face the greatest risk. Compliance with the Lockout/ Tagout standard prevents an estimated 120 fatalities and 50,000 injuries each year. Workers injured on the job from exposure to hazardous energy lose an average of 24 workdays for recuperation. How can you protect workers? The Lockout/Tagout standard establishes the employer's responsibility to protect employees from Hazardous Energy sources on machines and equipment during service and Maintenance. The standard gives each employer the flexibility to develop an Energy Control Program suited to the needs of the particular workplace and the types of machines and equipment being maintained or serviced. This is generally done by affixing the appropriate Lockout or Tagout devices to energy-isolating devices and by deenergizing machines and equipment. The standard outlines the steps required to do this. What do employees need to know? Employees need to be trained to ensure that they know, understand, and follow the applicable provisions of the Hazardous Energy control procedures. The training must cover at least three areas: aspects of the employer's Energy Control Program; elements of the Energy Control Procedure relevant to the employee's duties or assignment; and the various requirements of theOSHA standards related to Lockout/Tagout. What must employers do to protect employees? The standards establish requirements that employers must follow when employees are exposed to Hazardous Energy whileServicing and maintaining equipment and machinery. Some of the most critical requirements from these standards are outlined below: Develop, implement, and enforce an energy control program. Use lockout devices for equipment that can be locked out. Tagout devices may be used in lieu of lockout devices only if the tagout program provides employee protection equivalent to that provided through a lockout program. Ensure that new or overhauled equipment is capable of being locked out. Develop, implement, and enforce an effective tagout program if machines or equipment are not capable of being locked out. Develop, document, implement, and enforce energy control procedures. [See the note to 29 CFR 1910.147(c)(4)(i) for an exception to the documentation requirements.] Use only lockout/tagout devices authorized for the particular equipment or machinery and ensure that they are durable, standardized, and substantial. Ensure that lockout/tagout devices identify the individual users. Establish a policy that permits only the employee who applied a lockout/tagout device to remove it. [See 29 CFR 1910.147(e)(3) for exception. Inspect energy control procedures at least annually. Provide effective training as mandated for all employees covered by the standard. Comply with the additional energy control provisions in OSHA standards when machines or equipment must be tested or repositioned, when outside contractors work at the site, in group lockout situations, and during shift or personnel changes

Why use Lockout Tagout?
Why use Lockout Tagout?2017-02-20

Lockout/Tagout standards and equipment are used to protect employees from hazardous energy sources on machines and equipment during service and maintenance. With ever increasing safety legislation, assuring the safety of workers working on electrical machines and valves is extremely important. A huge number of today’s industrial accidents are caused by the uncontrolled release of energy or by the unexpected start up of machines or equipment. The main Lockout / Tagout injuries also known as the ‘fatal five’ are: • Not stopping the Equipment • Not disconnecting from the power source • Not dissipating residual energy • Restarting of equipment accidentally • Not clearing work area before restarting Energy Control Program Every workplace requires having an effective energy control program in place, this program should be specific to the types of machines and equipment being maintained. Many Hazardous energy source accidents can be avoided by making sure that proper Lockout/Tagout procedures along with the use of high quality lockout tagout equipment is used. To perform service or maintenance work on industrial equipment safely, it is imperative that the workers undertaking the task fully understand the importance of energy control and know how to apply energy isolation and Lockout Tagout correctly. An effective energy control program will contain the following: • High Quality, durable and reliable lockout devices that will cover all mechanical and electrical applications • A tailored Lockout/Tagout solution that will aid in developing and implementing your Lockout/Tagout program in an efficient manner • Appropriate, documented and tailored Lockout/Tagout procedures which are all OSHA compliant • Employees should be trained in both the classroom and “on the floor” environments to ensure that they gain a full understanding of the Control of Hazardous Energy • Lock out Tag out Audits should be run regularly. Equipment Identification and Cataloguing, Energy Control Tags and Lockout Tagout Signage should also be implemented.

 What is Lockout Tagout?
What is Lockout Tagout?2016-12-13

Lockout Tagout (LOTO) is a safety method enforced by putting the appropriate lockout or tagout devices to energy-isolating devices, 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.