适用范围：This code is applicable to the design of new substations（switching station）and those to be renovated and expanded with a rated AC voltage of 220kV-750kV.

适用范围：This Part is applicable to the construction quality acceptance and engineering quality evaluation of I&C device for newly-built,extended and rebuilt thermal power generation projects with unit capacity 300MW -1000MW. The unit capacity construction quality acceptance and evaluation of I&C device for thermal power generation project with unit capacity under 300MW may comply with this Part by reference.

适用范围：This Specification is applicable to the design for control room， central control room (CCR)，local control room and field auxiliary room（FAR）of instruments and control engineering in grassroots，expansion or revamp petrochemical project，and it is also applicable to the design for the control room of instruments and control engineering in coal chemical industry where coal is used as the feedstock to produce fuels and chemical products.

适用范围：This Part of DL 5190 is applicable to the construction and acceptance of boiler units with evaporation capacity between 400t/ h-3150t/ h，and the main steam pressure between 9MPa-28MPa as well as the main steam temperature between 540℃-610℃.

适用范围：This specification is applicable to the electric equipment installation of the power electricity project both for single unit of capacity of 200MW and above，and the substation of 110kV and above.This set of specifications can be refered to the imported electric devices，electricity generation projects with the single unit of capacity below 200MW，and the installation of substation capacity below 110kV.

适用范围：This Specification is applicable to metallic piping layout，such as carbon steel，alloy steel and stainless steel piping for grassroots，revamp and expansion projects in petrochemical industry，but it is not applicable to layout of non-metallic piping and underground water supply and drainage piping.

适用范围：This Specification is applicable to layout design for grassroots,revamp or expansion process plant in petrochemical industry.

适用范围：This Specification is applicable to the design for HVAC systems of production buildings and auxiliary buildings in grassroots，expansion and revamp petrochemical plants.

适用范围：This Specification is applicableto the design for water supply and drainage piping in petrochemical industry.

适用范围：This Specification is applicable to the management of construction technical documentation in grassroots，revamp，expansion，turnaround maintenance or modification project.