16 Va. Admin. Code § 25-50-510
When boilers are replaced or new boilers are installed in either existing or new buildings, a minimum clearance of two feet on all service sides shall be provided. Boilers and pressure vessels having manholes shall have five feet clearance from the manhole opening and any wall, ceiling or piping that will prevent a person from entering the boiler or vessel. All boilers and pressure vessels shall be located so that adequate space will be provided for the proper operation of the boilers and pressure vessels and their appurtenances, for the inspection of all surfaces, tubes, waterwalls, economizers, piping, valves and other equipment, and for their necessary maintenance and repair and replacement of tubes.
16 Va. Admin. Code § 25-50-510
Statutory Authority
§§ 40.1-22 and 40.1-51.5 et seq. of the Code of Virginia.