Article 1 This regulation was formulated in line with the "Regulations on Safety Supervision for Special Equipment", with a view to ensuring the safety operation of industrial pressure pipe, ensuring the personal and property safety of the people and promoting the economic development.
Article 2 This regulation is applicable to process plants, auxiliary equipments and industrial pressure pipes (hereinafter referred to as "pipes") affiliated to the public works within the battery limit. All the process plants, auxiliary equipments and pipes shall meet all of the following requirements:
(1) Maximum operating pressure is larger than or equal to 0.lMPa (gauge pressure, similarly hereinafter);
(2) Nominal diameter (NOTE 1) is larger than 25mm;
(3) Conveyance medium is gas, steam, liquefied gas, liquid whose maximum operating temperature is higher than or equal to its normal boiling point or combustible, flammable, noxious and corrosive liquid.
Article 3 This regulation is applicable to the following pipe scope:
(1) Pipe elements, including pipe components (NOTE 2) and pipe support parts (NOTE 3);
(2) Joints between pipe elements, the first joint (weld, flange, sealing member and fastener, etc.) connecting the pipe and equipment or device, and joints between the pipes and non-pressure parts;
(3) Safety valves, bursting disc devices, flame arresters, emergency shutoff devices and other safety protection systems used for the pipes. NOTE 1: The nominal diameter is the inside nominal diameter and nominal dimension, the code is usually indicated in DN.
NOTE 2: Pipe components are used to connect or assemble the pressure-bearing and enclosed pipe systems, including pipes, pipe fittings, flanges, sealing members, fasteners, valves, safety protection systems, compensators, flexible joints, pressure hoses, filters (such as Y-shape and T-shape), throttling devices (such as orifice plates) in the pipes and segregators.
NOTE 3: Pipe supporting elements, including steeves, spring supporters and hangers, diagonal bars, balance weights, elastic bolts, support bars, chains, guideways, cradles, bases, rollers, brackets, sliding supports, lifting eyes, hangers, clasps, pipe clips, U-clamps and plywoods. Article 4 The following pipes shall comply with provisions specified in other relevant safety technology regulations:
(1) Pipes whose nominal pressure is above 42MPa;
(2) Non-metallic pipes.
Article 5 This regulation is not applicable to the following pipes:
(1) Pipes special for the electrical equipments and telecommunication;
(2) Power pipes;
(3) Pipes for military equipments and nuclear facilities;
(4) Pipes for offshore installations and pipes down the mine;
(5) Pipes special for mobile equipments like railway locomotives, automotives, ships and aerospace crafts;
(6) Pipes for petroleum, natural gas and terrestrial heat exploration and excavation devices;
(7) Long-distance (oil-gas) pipes and oil/gas field gathering pipes;
(8) Pipes for town and municipal utilities;
(9) Pipes belonged to the body of refrigeration and air conditioning equipments as well as pipes special for heating and ventilation;
(10) Other pipes within the scope specified in "Regulations on Safety Technology for Special Equipment".
1 General Provisions
2 Pipe Elements
2.1 Basic Requirements
2.2 Materials
2.3 Application of Pipe Elements
3 Design
4 Installation
4.1 Basic Requirements
4.2 Welding and Heat Treatment
4.3 Site Manufacture and Installation
4.4 Visual Inspection and Nondestructive Testing of Weld joint
4.5 Withstand Voltage Test and Leak test
5 Application, Reconstruction and Maintenance
5.1 Application
5.2 Reconstruction
5.3 Maintenance and Repair
6 Periodic Inspections
7 Safety protection devices
7.1 Basic Requirements
7.2 Safety Relief Devices (Safety Valve and Bursting Discs Device)
7.3 Flame Arrester and ESV
7.4 Installation
7.5 Inspection and Maintenance
8 Supplementary Provisions
Annex A
Annex B
Annex C
Annex D
Annex E
