The difference between confined spaces and restricted spaces

Actually, the meaning is more or less the same; in national standards it is referred to as a confined space, while in everyday usage we often call it a limited space. . Working in confined spaces was previously referred to under the existing safety management systems as tank entry work or equipment entry work; the original terms had certain limitations. What we now refer to as “confined spaces” are enclosed or semi-enclosed facilities and areas in production areas, such as furnaces, towers, kettles, tanks, warehouses, tank trucks, pipelines, flues, tunnels, sewers, ditches, pits, wells, ponds, and culverts. Therefore, the term \"working in a confined space\" is a more scientific description and also reflects the actual situation.

Confined spaces refer to the interiors of various equipment in factories (such as furnaces, tower bottoms, tanks, silos, ponds, tank cars, pipes, flues, etc.), as well as enclosed or semi-enclosed facilities and areas in cities (including factories) such as tunnels, sewers, ditches, pits, wells, ponds, culverts, valve rooms, and sewage treatment facilities. This also includes areas such as ship cabins, underground structures, sealed containers, facilities that are not in use for long periods, or places with poor ventilation. In rural areas, it refers to wells and cellars used for storing sweet potatoes, potatoes, and various vegetables. Poorly ventilated mines should also be regarded as confined spaces. A space is considered a confined space if it meets the following physical conditions (all 3 of the following must be satisfied): a) There is sufficient space for employees to enter and carry out the designated tasks ； b) Access and evacuation are restricted, preventing free entry and exit ； c) It is not designed for employees to work inside for long periods of time. 2. A confined space is defined as such only when all of the following three conditions are met; none of them may be missing: 1. It has a sufficient volume allowing a person to enter completely ； 2. Imports and exports are limited or restricted ； 3. It is not designed to occupy space for a long time.

Usually, some refer to it as work in confined spaces, while others call it work in restricted spaces; no one seems to notice the difference.

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Confined space as specified in national standards: lol