Lock Out / Tag Out Safety (LOTO)

LOTO Safety


The "Lockout/Tagout (LOTO)" procedure is a safety protocol used to prevent accidental or unintended startup of machinery and equipment during maintenance or servicing activities. The guidelines for electrical safety under LOTO include the following:

  Authorized personnel: Only trained and authorized employees should perform LOTO procedures.
  Locks and tags: Locks and tags should be used to physically prevent the activation of energy isolating devices.
  Energy isolation: All sources of hazardous energy must be identified and isolated before maintenance or servicing activities are performed.
  Verification of isolation: Before work begins, authorized employees must verify that the equipment is properly isolated and de-energized.
  Written procedures: A written LOTO procedure should be in place and followed by all authorized personnel.
  Group LOTO: In some cases, multiple workers may need to work on the same equipment. In these cases, a "group LOTO" procedure should be established to ensure the safety of all workers.
  Regular review: The LOTO procedure should be reviewed regularly to ensure its effectiveness and to identify areas for improvement



NPSINST 6055.1 NPS Hazardous Energy Control Program

29 CFR 1910.147, The Control of Hazardous Energy (lockout/tagout)

OPNAVINST 5100.23 Chapter 24, The Control of Hazardous Energy

FE types




The Types of Fire Extinguishers


Class A extinguishers are for use on fires that contain ordinary combustibles such as paper, wood, cloth plastics, etc.


Class B extinguishers are for use on fires containing flammable liquids like oil, gasoline


Class C extinguishers are for fires involving electrical equipment such as tools or appliances.


Class D extinguishers are for use on combustible metals. This type of extinguisher is generally only found in factories that work with these particular metals.