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TSG D0001-2009: Pressure pipe safety technology supervision regulation for industrial pressure pipe
TSG D0001-2009
Safety Technology Regulation for Special Equipment
Pressure Pipe Safety Technology Supervision Regulation for
Industrial Pressure Pipe
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
May 8, 2009
Table of Contents
1 General Provisions ... 5 
2 Pipe Elements ... 8 
2.1 Basic Requirements ... 8 
2.2 Materials ... 9 
2.3 Application of Pipe Elements ... 10 
3 Design ... 14 
4 Installation ... 19 
4.1 Basic Requirements ... 19 
4.2 Welding and Heat Treatment ... 20 
4.3 Site Manufacture and Installation ... 22 
4.4 Visual Inspection and Non-destructive Testing of Welding Joint ... 23 
4.5 Pressure Test and Leak Test ... 24 
5 Application, Reconstruction and Maintenance ... 28 
5.1 Application ... 28 
5.2 Reconstruction ... 31 
5.3 Maintenance and Repair ... 31 
6 Periodic Inspections ... 32 
7 Safety protection devices ... 34 
7.1 Basic Requirements ... 34 
7.2 Safety Relief Devices (Safety Valve and Bursting Disc Device) ... 36 
7.3 Flame Arrester and ESV ... 37 
7.4 Installation ... 39 
7.5 Inspection and Maintenance ... 41 
8 Supplementary Provisions ... 42 
Annex A Gradation for Industrial Pressure Pipe and Classification of the
Toxicity, Corrosivity and Fire Hazard of its Medium ... 43 
Annex B Quality Certificate of Pressure Pipe Elements ... 47 
Annex C Design Documents of Pressure Pipes ... 48 
Annex D Installation Quality Certificate of Pressure Pipes ... 51 
Annex E Calculation of Safety Relief Devices ... 53 
Pressure Pipe Safety Technology Supervision Regulation for
Industrial Pressure Pipe
1 General Provisions
Article 1 This regulation is 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 equipment and industrial
pressure pipes (hereinafter referred to as "pipes") affiliated to the public works within the
battery limit. All the process plants, auxiliary equipment and pipes shall meet all of the
following requirements:
(1) Highest operating pressure is greater than or equal to 0.lMPa (gauge pressure, the
same below);
(2) Nominal diameter (NOTE 1) is greater than 25mm;
(3) Conveyance medium is gas, steam, liquefied gas, liquid whose highest operating
temperature is higher than or equal to its normal boiling point or combustible,
explosive, 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 support parts, 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 equipment and telecommunication;
(2) Power pipes;
(3) Pipes for military equipment and nuclear facilities;
(4) Pipes for offshore installations and pipes down the mine;
(5) Pipes special for mobile equipment 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 belonging to the body of refrigeration and air conditioning equipment as well as
pipes special for heating and ventilation;
(10) Other pipes within the scope specified in "Regulations on Safety Technology for
Special Equipment".
Article 6 Manufacturing of the pipe elements and the design, installation (including the field
fabrication, the same below), reconstruction, maintenance, application and inspection/testing
shall be in accordance with this regulation.
The quality and technical supervision departments (hereinafter referred to as "quality
inspection departments") at all levels are responsible for the safety supervision of pipes and
for the supervision of the implementation of this regulation.
Article 7 This regulation specifies basic safety requirements for the pipes, other provisions
(such as technical standards and internal enterprise provisions) shall not be lower than the
requirements of this regulation.
Safety management personnel and operators of pipes shall obtain corresponding "Special
Equipment Operator Certificate".
2 Pipe Elements
2.1 Basic Requirements
Article 14 The design pressure of standard parts of the pipe elements shall be in accordance
with the requirements specified in the relevant safety technology regulations and their
corresponding standards. Non-standard pipe elements shall also be provided with design
calculations and drawings.
Article 15 Manufacturing organizations of pipe elements shall obtain "Manufacture License
for Special Equipment" and shall accept the supervision and inspection for their product
manufacturing process by the special equipment inspection and testing institutions in light of
the relevant safety technology regulations.
Article 16 Manufacturing of the pipe elements shall be provided with design (technical)
documents and manufacturing process documents and also shall meet the requirements in the
relevant safety technology regulations and their corresponding standards.
Article 17 Manufacturing of the pipe components shall be in accordance with provisions
specified in the relevant safety technology regulations and their corresponding standards. As
for the welding (including the repair welding) in the manufacturing process, welding
procedure qualified through assessment shall be adopted and welders with qualification
certificate shall be responsible for the welding. Welding procedure qualification and welder
performance qualification tests shall be in accordance with the requirements specified in the
relevant safety technology regulations and their corresponding standards.
Article 18 Manufacturing organizations of pipe elements shall provide product quality
certificate documents stamped with their quality inspection seals according to the supply
batches of the pipe elements. As for those pipe elements supervised and inspected, they still
shall be provided with supervision and testing certificate issued by the special equipment
inspection and testing institutions.
Quality certificate documents of the pipe components include product qualification certificate
and quality certificate. Product qualification certificate usually covers the product name, serial
number, specification type and voluntary standards, etc. (for specific format, see Annex B).
The quality certificate usually includes the following contents except for those contents
included in the product qualification certificate:
(1) Chemical compositions of the materials;
(2) Mechanical properties of the materials and welding joints;
(3) Heat treatment state;
(4) Results of non-destructive testing;
(5) Pressure test results (applicable to the relevant safety technology regulations and their
corresponding standards or those specified in the contract);
(6) Type test results (applicable to those requiring type test);
(7) Other inspection items specified in the product standards or contract;
(8) Quality certificates of outsourced semi-finished products or finished products.
Pipe support parts shall be provided with product quality certificate documents according to
the provisions stipulated in the relevant safety technology regulations and their corresponding
standards.
Product qualification certificates and quality certificates shall be stamped by quality
inspection personnel and quality assurance engineer of the manufacturing organization.
Article 19 Pipe components shall be signed and marked piece by piece. The marking contents
generally include code or brand of the manufacturing organization, license sign, material
(grade, specification and furnace batch number), and product code. In addition, they also shall
be in accordance with the requirements specified in the relevant safety technology regulations
and their corresponding standards. If the product specification is too small to mark all
contents, then labels may be adopted or partial contents may be omitted in terms of
corresponding requirements. It shall be able to trace back to the product quality certificate
document from the product markings.
Article 20 As for valves for the pipes, not only the requirements stipulated in this regulation,
but also those in other safety technology regulations shall be complied with.
2.2 Materials
Article 21 Selection of materials for pipe components shall meet the following basic
requirements and in the design, appropriate materials shall be selected according to specific
working conditions and media:
(1) Be in line with the provisions stated in the corresponding material standards; in the
application aspect, it shall be in line with the provisions in the relevant pipe safety
technology regulations;
(2) Elongation of metal materials shall not be lower than 14% and materials shall be
provided with sufficient anti-brittle failure capability at the lowest service
temperature. When metal materials whose elongation is lower than 14% must be
applied on grounds of specific causes, necessary protective measures must be able to
be taken;
NOTE 4: Definition of severe cyclic condition is specified in GB/T 20801.3-2006 "Pressure Piping Code - Industrial
Piping - Part 3: Design and Calculation".
(2) Service temperature of spherical-graphite cast iron shall be higher than -20℃ and be
lower than or equal to 350℃.
Article 25 Gray cast iron and malleable cast iron pipe components may be applied in the
following conditions. However, safety protection measures against superheat, thermal shock,
vibration and misoperation must be adopted;
(1) Service temperature of gray cast iron shall be higher than or equal to -10℃, but shall
be lower than or equal to 230℃. The design pressure shall be less than or equal to
2.0MPa;
(2) Service temperature of malleable cast iron shall be higher than -20℃ and be lower
than or equal to 300℃. The design pressure shall be less than or equal to 2.0MPa;
(3) When the gray cast iron and malleable cast iron are used for combustible medium,
their service temperature shall be higher than or equal to 150℃ and the design
pressure shall be less than or equal to 1.0MPa.
Article 26 As for the application of carbon structural steel pipe components (pressure parts),
not only those provisions stipulated in Article 27 of this regulation, but also those specified
below shall be met:
(1) Carbon structural steels shall not be applied to class GC1 pipes;
(2) Boiling steel and semi-killed steel shall not be applied to noxious and combustible
medium pipes; their design pressure shall be less than or equal to 1.6MPa and service
temperature shall be lower than or equal to 200℃ but shall not be lower than 0℃;
(3) Q215A, Q235A and other class A killed steels shall not be applied to noxious and
combustible medium pipes; their design pressure shall be less than or equal to
1.6MPa and service temperature shall be lower than or equal to 350℃. The lowest
service temperature shall be in accordance with those specified in GB/T
20801.1-2006 "Pressure Piping Code - Industrial Piping - Part 1: General";
(4) Q215B, Q235B and other class B killed steels shall not be applied to utmost and
highly imperil and noxious medium pipes; their design pressure shall be less than or
equal to 3.0MPa and service temperature shall be lower than or equal to 350℃. The
lowest service temperature shall be in accordance with those specified in GB/T
20801.1.
Article 27 As for carbon structural steels applied to pipe components, their welding thickness
shall meet the following requirements:
(1) Requirements for pipe material grade table, antiseptic treatment and heat insulation as
well as for sweeping and cleaning, and pipe painting;
(2) Technical requirements for pipe elements;
(3) When pipe elements are adopted in the engineering design, requirements for
engineering design service life shall be considered;
(4) Technical requirements for manufacture and installation (including welding) of pipes;
(5) Testing and inspection requirements.
Article 38 Pipe drawing list and pipe layout shall be sealed with design license stamp of the
design organization.
Article 39 Pipe data sheet, pipe material grade table, equipment layout, pipe layout, strength
calculation and pipe stress analysis calculation as well as other major design drawings and
documents shall be provided with three step signatures, namely, designer, checker and
examiner. In addition, the pipe material grade table and pipe stress analysis calcula...