The following are some key points about manhole specifications:
Size requirements:
The manhole of specific equipment should be 200mm wider than each side of the equipment outline. The standard size of the personnel access port is 600mm x 600mm, and 400mm x 400mm, or even 300mm x 300mm, if it is not necessary to pass people.
Standard purpose:
The manhole standard aims to ensure the normal operation, safety and reliability of equipment, improve work efficiency, reduce accident risk, and provide a basis for the replacement and maintenance of equipment components.
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