COMDTINST M5100.47D — Safety And Environmental Health Manual

COMDTINST M5100.47D governs the Coast Guard Safety and Environmental Health Program, including safety, health, and environmental practices.

Search COMDTINST M5100.47D

  • Publication number: COMDTINST M5100.47D
  • Title: SAFETY AND ENVIRONMENTAL HEALTH MANUAL
  • Date: 7/27/2021
  • Proponent: CG-113

View COMDTINST M5100.47D on armypubs.army.mil


It covers mishap response, confined-space entry, respiratory protection, hazardous chemicals, thermal stress, motor-vehicle safety, fire safety, and aviation safety. It sets standards for reporting, training, hazard controls, protective equipment, and program implementation.

Topics covered

  • Mishap reporting
  • Confined-space entry
  • Respiratory protection
  • Hazardous chemical labeling
  • Thermal stress
  • Motor-vehicle safety
  • Fire prevention
  • Aviation safety

Questions and answers

What property damage threshold must be reported as a mishap?

Primary changes include: (1) Section B – Changed mishap reportable property damage threshold for all Coast Guard and non-Coast Guard property to $5,000 or greater regardless of community. (paragraph 6)

What training is required before entering a confined space?

Not enter a confined space without having first received documented training on the hazards associated with confined spaces. (paragraph 3)

Who may authorize entry into a confined space?

Not authorize entry (their own or anyone else’s) into a confined space without being designated that authority in writing by their Commanding Officer. (paragraph 3)

What must happen before Coast Guard personnel enter confined spaces aboard commercial vessels?

Coast Guard personnel only enter confined spaces aboard commercial vessels after the space has been certified as “Atmosphere Safe for Workers” by a CMC. (paragraph 6)

What are the seat-belt requirements on Coast Guard installations?

All personnel operating or riding in a motor vehicle on any Coast Guard installation must properly use installed occupant restraints (seat belts), in all seats, at all times. (paragraph 2)

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