1.1 Purpose
With a view to strengthening safety supervision of boilers, preventing and minimizing accidents, guaranteeing life and property safety of the masses and promoting the economic development, this regulation is formulated according to the relevant requirements of "Regulation on Safety Supervision of Special Equipment".
1.2 Application scope
This regulation is applicable to the stationary pressure-bearing steam boiler (Note 1-1), pressure-bearing hot-water boiler, organic heat transfer material boiler as well as flue boiler and flue-shell composite waste heat boiler, both of which take the waste heat utilization as the fundamental purpose.
Note 1-1: the stationary boiler means that the boiler is fixed during the service period.
1.2.1 Boiler body
The integral that is composed of boiler drum, heating surface and the header & connecting pipeline, furnace, combustion equipment and air preheater (including flue and air duct), structure (including platform and staircase), furnace wall and slag removal equipment.
1.2.2 Boiler external piping
(1) Power station boiler, including main feed water pipeline, main steam pipe and reheat steam pipe;
(2) Boilers beyond power station boilers are divided into the boiler with steam (waster/oil) manifold (Note 1-2) and without it; the former includes the pressure pipe [including steam (waster/oil) manifold) in the first pass of circumferential weld connected between the boiler feed water (oil) pump & steam (waster/oil) manifold outlet and the external pipe while the latter includes the pressure pipe in the boiler feed water (oil) pump outlet and boiler main steam (water and oil) outlet valve.
Note 1-2: the steam (waster/oil) manifold shall meet the relevant requirements of the header in this regulation.
1.2.3 Boiler safety accessories and instruments
Boiler safety accessories and instruments includes safety valve, pressure measuring device, water level meter and indicator, temperature measuring device, blowdown and drainage device as well as safety protection devices and relevant instruments.
1.2.4 Bolier accessory and system
Bolier accessory and system includes the fuel preparation, steam-water and water treatment equipment and systems.
1.3 Inapplicable scope
This regulation is not applicable to the following equipment:
(1) Steam boiler with the normal design water volume less than 30L;
(2) Hot-water boiler with the rated water-delivery pressure or rated thermal power less than 0.1MPa or 0.1MW respectively;
(3) Heat exchanger required for equipment and process flow cooling.
