What does OSHA say about confined spaces?

confined space: A space that has limited or restricted means of entry, is not designed for continuous occupancy, and is large enough and configured so that a person can enter the space and maneuver well enough to perform tasks.

What are the 3 criteria for something to be considered a confined space?

In order for a work area to be defined as a confined space it must meet all three of the following criteria:

  • Limited Openings for Entry and Exit.
  • The Space is not Intended for Continuous Human Occupancy.
  • The Space is Large Enough for You to Enter and Conduct Work.

What are 3 different types of hazards in confined spaces?

The hazards associated confined spaces include:

  • Toxic Atmosphere. A toxic atmosphere may cause various acute effects, including impairment of judgement, unconsciousness and death.
  • Oxygen Deficiency.
  • Oxygen Enrichment.
  • Flammable or Explosive Atmospheres.
  • Flowing Liquid or Free Flowing Solids.
  • Excessive Heat.

What are 3 examples of confined space?

Examples of potential confined spaces:

  • storage tanks, tank cars.
  • process vessels, pressure vessels.
  • silos.
  • pits and degreasers.
  • pipes, sewers, sewer pump stations.
  • wet and dry wells, shafts and tunnels.
  • ship cargo tanks, ballast or oil tanks, and void spaces.

Who is responsible for knowing who is in the confined space?

This is typically the person who knows the most about the confined spaces on a job site. The Supervisor has many duties including knowledge of the hazards: not only what hazards might be faced in the PRCS, but also signs and symptoms of exposure, and the likely consequences of that contact.

Why is an inspection pit a confined space?

Fire or Asphyxiation due to Gases, Vapours or Fuel Release in the Pit. Due to the confined space of inspection pits, they are likely to have poor natural ventilation. This combined with the release of any high flash point substance could cause a fire, explosion or asphyxiation risk.

Is a submarine a confined space?

Living conditions on a submarine are unique because the crew works, eats, and sleeps in a confined space that is beneath the sea. Through the 1920s, submarine crews were packed into tight spaces with equipment, machinery, weapons, and provisions.

What are the four main dangers of a confined space?

A recent study identified four main causes of confined space accidents that lead to injuries, namely:

  • Toxic atmospheric hazards.
  • Flammable atmospheric hazards.
  • Engulfment.
  • Physical hazards.

What is the most common hazard found in a confined space?

What are the hazards associated with confined spaces? An excess of oxygen, in the presence of combustible materials, results in an increased risk of fire and explosion. Some materials, which do not burn in air, may burn vigorously or even spontaneously in an enriched oxygen atmosphere.

Who might be harmed in confined space?

If a flammable atmosphere inside a confined space ignites, an explosion may occur, resulting in the expulsion of hot gases and the disintegration of the structure. Liquids or solids can flow into the confined space causing drowning, suffocation, burns and other injuries.

Are NFPA labels required by OSHA?

OSHA has adopted the labeling standards from the NFPA when it comes to identifying hazardous materials. They require that companies use this labeling system whenever hazardous materials are being transported, stored, or used in a facility.