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  • BSI
    BS 855:1990 Specification for welded steel boilers for central heating and indirect hot water supply (rated output 44 kW to 3 MW)
    Edition: 1990
    $569.57
    / user per year

Description of BS 855:1990 1990

1.1.1 This British Standard specifies requirements for the design and construction including materials, workmanship, inspection, testing and marking of welded steel boilers for central heating and indirect hot water supply for which the classification of design pressures, flow temperatures and outputs are given in table 1.

1.1.2 This standard applies to boilers for hot water or low pressure steam (see table 1), with rated heat output between 44 kW and 3 MW and for use with one or more of the following fuels:

  1. smokeless solid fuels, e.g. furnace coke, low temperature coke or anthracite;
  2. bituminous coal fired by means of mechanical stokers;
  3. gaseous fuels of the 2nd and 3rd families (see BS 4947);

and for rated heat output between 300 kW and 3 MW when used with liquid fuels of the classes specified in BS 2869.

This standard also applies to hot water boilers pressurized by steam.

NOTE. The titles of the publications referred to in this standard are listed on page 89.



Requirements for the design and construction including materials, workmanship, inspection, testing and marking of boilers for use with solid, gaseous and liquid fuels.

Standard NumberBS 855:1990
TitleSpecification for welded steel boilers for central heating and indirect hot water supply (rated output 44 kW to 3 MW)
StatusConfirmed
Publication Date1990-05-31
ReplacesBS 855:1976
Partially Replaced ByBS EN 303-4:1999, BS EN 303-1:1999
DescriptorsFire-tube boilers, Dimensions, Stiffeners, Steam boilers, Design, Electrical installations, Thickness, Marking, Hot-water boilers, Hot-water supply systems, Inspection, Boiler stays, Safety measures, Ratings, Installation, Holes, Classification systems, Seatings, Test pressure, Hot-water central heating, Pipes, Cylindrical shape, Stress, Steels, Welding, Equations, Indirect hot-water supply, Boilers, Thermal output, Automatic control systems, Pipe connections, Dished ends, Heating equipment, Temperature
ICS91.140.65 Water heating equipment, 91.140.10 Central heating systems
CommitteeRHE/24
ISBN0 580 17591 X
PublisherBSI
Pages92

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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