GB/T 16507.1-2022Water-tube boilers - Part 1: General requirements (English PDF)

6.2 Rated parameters

6.2.1 The rated parameters of the boiler include rated evaporation (t/h) or rated thermal power (MW), rated pressure (gauge pressure) and rated temperature.

6.2.2 The rated parameters at the outlet of the boiler can be selected according to the following criteria:

a) The rated parameters of fixed hot water boilers for industrial or domestic use are in accordance with GB/T 3166;

b) The rated parameters of industrial stationary steam boilers are in accordance with GB/T 1921;

c) The rated parameters of stationary steam boilers for power generation are in accordance with GB/T 753.

6.3 Pressure rating The boiler pressure rating is:

a) Supercritical boiler: p>=22.1mPa;

b) Subcritical boiler: 16.7MPa<=p< 22.1MPa;

c) Ultra-high pressure boiler: 13.7MPa<=p< 16.7MPa;

d) High pressure boiler: 9.8MPa<=p< 13.7MPa;

e) Sub-high pressure boiler: 5.3MPa<=p< 9.8mPa;

f) Medium pressure boiler: 3.8MPa<=p< 5.3MPa.

g) Low-pressure boiler: p< 3.8MPa.

7.1 Material allowable stress

7.1.1 Pressure element material The metal temperature is determined according to the working fluid temperature, ambient temperature or flue gas temperature of the part where the non-pressure element is located, combined with heat transfer conditions.

7.3 Load

7.3.1 When determining the dimensions (including wall thickness) of pressure elements, the loads caused by the following conditions shall be considered.

a) The internal or external pressure it is subjected to, and the static pressure it is subjected to.

b) When the additional stress generated by the following loads on the element causes the average stress increase to exceed 10% of the allowable stress, its influence shall be included: 1) Under the working conditions of operation and hydrostatic test, the self-weight of components (including those caused by component metal, internal storage medium, heat insulation and insulation layer, dust accumulation and slagging, fluidized bed material layer); 2) Loads borne by structural connections or loads caused by supports.

c) The pressure elements are subjected to the following loads. Additional analysis and calculation shall be carried out using the methods specified in the corresponding standards according to the actual situation: 1) The forces and moment loads formed by the integrally arranged connecting piping system or its thermal expansion, as well as the forces and moments formed by the instantaneously changing temperature difference or the difference in thermal expansion coefficient; 2) The periodic loads caused by rapid and frequent changes in pressure and temperature during normal operation and during start-up or shutdown.

7.3.2 When necessary, the following loads shall also be taken into account:

a) Gravity loads of ancillary equipment, pipes, escalators, platforms;

b) Wind load, earthquake load, snow load;

c) Forces connecting pipes and other components;

d) Shock loads, including shock loads caused by sharp pressure fluctuations and reaction forces caused by fluid shocks;

e) Forces during transport or hoisting.

7.4 Pressure

7.4.1 Working pressure The working pressure of the pressure element includes the rated pressure of the boiler, the flow resistance from the pressure element to the boiler outlet at the maximum flow rate and the static pressure of the water column from the pressure element to the boiler outlet.

7.4.2 Calculation pressure The calculation pressure of the pressure element is determined based on the working pressure of the pressure element.

7.5 Thickness The thickness of the pressure element is calculated according to the strength design. An additional amount of thickness is added. If necessary, it shall also comply with the rigidity of the element and the limitation of the manufacturing process on the minimum thickness and the limitation of the thermal stress on the maximum thickness.

9.1 Manufacture

9.1.1 Boiler pressure parts are manufactured in accordance with the requirements of GB/T 16507.5.

9.1.2 The inspection of boiler pressure parts shall comply with the requirements of GB/T 16507.6.

9.1.3 The boiler steel structure is manufactured in accordance with the requirements of NB/T 47043.

9.1.4 Boiler coating and packaging are in accordance with the requirements of NB/T 47055.

9.2 Installation and operation The installation and operation of the boiler shall comply with the requirements of GB/T 16507.8.

9.3 Performance test The thermal performance test of the boiler is carried out according to the following methods:

10.3 Boiler products

10.3.1 Boiler design and system configuration shall meet the requirements of 8.1.

10.3.2 In addition to meeting the requirements of this document, the boiler design shall also be optimized and reasonably configured. Make the system achieve the best energy- saving effect. Make the energy efficiency indicators of industrial boilers meet the requirements of GB 24500, NB/T 47034 and special product standards. Make the power plant boiler meet the provisions of GB/T 34348 or the requirements of the order contract.

10.3.3 The energy efficiency evaluation and energy utilization efficiency index and classification of industrial boiler systems shall comply with the provisions of NB/T 47035 and NB/T 47061 respectively. The water saving and consumption reduction of the water vapor system of industrial steam boilers shall comply with the provisions of GB/T 29052.

10.3.4 The original nitrogen oxide emission concentration of the boiler shall also meet the specified indicators of the boiler product standard.

10.3.5 The discharge of air pollutants during boiler operation shall meet the following requirements. Otherwise, corresponding dust removal equipment, desulfurization, and denitrification equipment shall be added.

a) For steam boilers of which the output of a single unit is less than or equal to 65t/h, with coal, oil and gas as fuel AND hot water boilers of various capacities, air pollutants such as particulate matter, sulfur dioxide, nitrogen oxides, mercury and its compounds emitted by layer-fired boilers of various capacities and coal thrower furnaces, as well as the blackness of flue gas shall be less than or equal to the limit specified in GB 13271.

b) For coal-fired power generation boilers with a single output greater than 65t/h, except for layer-fired furnaces and coal thrower furnaces, pulverized coal power boilers of various capacities, fuel oil, gas-fired power boilers of which the output of a single unit is greater than 65t/h, boilers for power generation with a single output greater than 65t/h using coal gangue, biomass, oil shale, petroleum coke and other fuels, the emission concentration of air pollutants shall meet the limit value specified in GB 13223.

c) For boilers that use domestic waste as fuel, their emissions shall meet the requirements of GB 18485. Boilers burning other fuels shall meet the emission standards of corresponding products.

Note 1. 2. **Search (Optional).** Enter the keyword '**GB/T 16507.1-2022**' in the search bar, if it is not already shown. 3.

Note 2. 9.

Note 3. 10. **Verification (USD

Notes and Explanations

Note 1:**[GB/T 16507.1-2022](https://