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Safety for Confined Space Entry

DANGER Confined Space (Espacio Limitado)
Safety for Confined Space Entry
Knowing the dangers of confined spaces – and the safety precautions to take before entering them – could save a life.
Learn more below:
View Confined Space Safety Products
What is a confined space?
A confined space is defined as an area that:
• is large enough for a person to occupy
• is difficult to get in and out of
• is designed for only short-term work
Why confined spaces
are dangerous
Unlike other hazards workers are faced with, the concern about a confined space is not an injury from which a worker can recover, but a fatality. Confined spaces contain hazards that will not only injure a worker, but will often take his or her life. This is why precautionary measures such as gas monitoring and ventilating the space should be taken.
Confined spaces can be found in
many places on agricultural or
horticultural operations, such as:
• Silos, grain bins and manure pits
• Well shafts and deep trenches
• Agricultural chemical tanks
• Cold storage rooms
• Hopper rail cars and tank trucks
Some of the steps you should take in
protecting yourselves and others
in confined spaces are to:
Confined spaces are dangerous because:
• Certain gases such as
  methane may be produced in
  confined spaces. Many of
  these gases displace oxygen
  in the air you breathe.
• Cold storage rooms often have
  the oxygen pumped out of
  them to help preserve foods.
• Gases such as carbon
  monoxide, methane and
  hydrogen sulfide may build
  up to toxic levels.
• Some of these gases are
  odorless, so you won't even
  know they are there.
• The buildup of these gases
  can easily be ignited, causing
  a fire or an explosion.
• Confined spaces also have
  many physical hazards. These
  include falling objects, wet
  surfaces, sloping sides and
  loose material that can break
  under your weight.
• Determine what harmful contaminants are present in
  the confined space. Many confined spaces have
  multiple harmful gases.
• Monitor the space for harmful gases and vapors
  before you decide to go in.
• If harmful gases are present, ventilate the space,
  then monitor again.
• Monitor continuously any time someone is in the
  confined space.
• Always wear the appropriate personal protective
• Always turn off, tag and "lockout" any energy sources
  such as augers or mixing blades so that no one can
  restart the equipment and injure a worker.
• Have appropriate rescue procedures in place
  should something go wrong.
• Have workers who enter the space wear a full-body
  harness and lifeline so he or she can be easily
  rescued from the space without another person
  having to enter and risk injury.
• If a rescuer does have to enter, make sure he or she
  has appropriate respiratory protection like a SCBA
  (self-contained breathing apparatus).
• Have an attendant outside any time someone
  has entered the space.