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Title: Pressurized Worksites
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Goal: this task will increase the success of the goal to apply Cal/OSHA safety suggestions.
John Mitchell published this Cognitive Task at under Industry | Construction
Doers: 1 | Form: Cognitive Task | Phase: Engagement | Type: Pre-Event | Level: 1 | Code:
Start: Jan 25, 2020 | When: | Duration: 5 Minute(s)
  • The next Steps cover Cal/OSHA safety regulations for Pressurized Worksites. Where appropriate, we have referenced the code from Title 8 of the California Code of Regulations.

    The topics we will cover in this isoBlog are:

    -What is a Pressurized Worksite?
    -Required Notification
    -Regulatory Requirements

    After each of the next Steps, select the 'successful' response to indicate that you have read and understand the Step.

    Select 'successful' now and proceed.
  • What is a Pressurized Worksite?

    Pressurized worksites (also known as compressed-air worksites) are sites where employees perform duties in a pressurized environment, such as a caisson.

    Employees working on pressurized worksites may be exposed to some specific health and safety hazards due to compression and decompression. These hazards are similar to hazards found in diving operations, pressurized tunneling operations, and in confined spaces.

    Employees may develop decompression sickness (bends) from exposure to decompression. The symptoms of decompression sickness include headache, unusual tiredness, rash, pain in
    one or more joints, tingling in the arms or legs, muscular weakness or paralysis, breathing difficulties, shock, unconsciousness or death.

    Also, in a pressurized work environment structural failures or blowouts may occur. This may lead to the work area becoming inundated with mud and water causing drowning and asphyxia.
  • Required Notification

    Cal/OSHA must receive written notification at least seven days before the work is started. 6075
  • Regulatory Requirements

    Regulatory requirements for pressurized (hyperbaric) work environments include:

    -Following the guidelines for proper compression of employees as per 6080(a)

    -Not subjecting employees to pressure exceeding 50 pounds per square inch. 6080(b)

    -Not allowing employees working in compressed air to pass from the working chamber to atmospheric pressure until after decompression, in accordance with 6085, 6090
    Exception: the requirements above do not apply in an emergency.

    -Controlling decompression of employees as discussed in 6085.

    -Decompression of employees in accordance with the specified decompression tables of the U.S. Navy Diving Manual, Volume 2, Chapter 9, 2008
    Exception: the last two requirements do not apply in an emergency provided that employees are decompressed in accordance with decompression tables and procedures recommended by the supervising physician.

    -Temperature, illumination, sanitation, and ventilation as per 6100. Ventilation in the locks and chambers, with the exception of the medical chamber, shall be such that the air quality meets the requirement of Section 5144(i). Ventilating air shall be not less than 30 cubic feet per minute per person. 6100

    -Providing forced ventilation during decompression to ensure a source of fresh air. 6100(f)

    -Taking one, or both, of the following steps when an oxygen breathing gas system is used during decompression, to ensure that the concentration of oxygen inside the chamber or lock does not exceed twenty five percent (25%) by volume:
    a. The oxygen breathing gas system shall capture the oxygen that is not consumed by the user and directly exhaust it to a well-ventilated area outside of the lock or chamber.
    b. An oxygen meter shall be used to continuously monitor the oxygen concentration inside the chamber or lock.

    -The employer retaining a supervising physician who shall be available at all times while pressurized work is in progress in order to provide medical supervision of employees employed in compressed air work

    -Following fire prevention and oxygen safety requirements as specified in 6115
  • Training

    Employees who are exposed to or control the exposure of others to hyperbaric conditions shall be trained in hyperbaric related physics and physiology, recognition of pressure related injuries, and how to avoid discomfort during compression. 6075
  • How much did this isoBlog help you to understand the Cal/OSHA safety regulations for Pressurized Worksites, including:

    -What is a Pressurized Worksite?
    -Required Notification
    -Regulatory Requirements

    Select your response below.
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