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TSG D7006-2020: Pressure Pipe Supervision Inspection Regulation
TSG D7006-2020
TSG
TECHNICAL SPECIFICATION FOR
SAFETY OF SPECIAL EQUIPMENT
Pressure pipe supervision inspection regulation
State Administration for Market Regulation
May 16, 2020
Table of Contents
Foreword ... 2 
1 General ... 5 
2 General requirements ... 8 
3 Supplementary provisions ... 15 
Appendix A Special requirements for manufacturing supervision inspection of
pressure piping components ... 16 
Appendix B Special requirements for supervision inspection of long-distance
pipeline construction ... 24 
Appendix C Special requirements for construction supervision inspection of
public pipelines ... 33 
Appendix D Special requirements for supervision inspection of industrial
pipeline construction ... 41 
Appendix E Special equipment supervision inspection certificate ... 50 
(Manufacturing of pressure piping components) ... 50 
Appendix F Notice on special equipment supervision inspection opinion (1) . 53 
Appendix G Evaluation of implementation status of quality assurance system
... 55 
Appendix H Special equipment supervision inspection liaison form... 58 
Pressure pipe supervision inspection regulation
1 General
1.1 Purpose
In order to standardize the supervision inspection of pressure piping
components manufacturing (supervision and inspection is hereinafter referred
to as supervision inspection) and the supervision inspection of pressure
pipeline installation, modification and major repairs (installation, modification
and major repairs are hereinafter collectively referred to as construction), in
accordance with the "Special Equipment Safety Law of the People's Republic
of China" "Special Equipment Safety Supervision Regulations", this regulation
is hereby formulated.
1.2 Scope of application
1.2.1 Manufacturing supervision inspection
This regulation is applicable to the supervision inspection of the manufacturing
process of the following pressure piping components within the scope as
specified in the "Special Equipment Catalog":
(1) Submerged arc welded steel pipe, polyethylene pipe (Note 1-1);
(2) Gas pressure regulating device, temperature and pressure reducing
device, factory prefabricated pipe segment (Note 1-2), flow meter (shell)
(Note 1-3) in the component assembly device.
Note 1-1: It excludes polyethylene pipes with metal skeletons and fiber-
reinforced polyethylene pipes.
Note 1-2: Factory prefabricated pipe segment refers to the piping component
products manufactured by the manufacturer after welding and assembling
pressure piping components in the factory according to the construction design
drawings. It does not include the piping prefabrication performed by the
installation organization at the construction site.
Note 1-3: The temperature and pressure reducing devices, factory
prefabricated pipe segments, flow meters (shells) used in the pipelines within
the boiler range can be manufactured, supervisory inspected in accordance
with the relevant regulations of the boiler.
construction organization, non-destructive testing organization, etc.
The inspected organization shall do the following work:
(1) Pressure piping component manufacturers, design organizations,
construction organizations, non-destructive testing organizations shall
establish a quality assurance system and maintain its effective
implementation;
(2) Provide necessary working conditions; determine the responsible person
for supervision inspection work; do a good job in cooperation of
supervision inspection;
(3) The pressure piping component manufacturer shall submit a supervision
inspection application to the supervision inspection agency before the
product is manufactured; submit a production plan; provide real and
effective inspection materials in a timely manner (Note 1-5);
(4) The construction organization is responsible for coordinating the
implementation of supervision inspection matters, submitting a
supervision inspection application to the supervision inspection agency or
requesting the construction organization to submit a supervision
inspection application, timely coordinating and solving construction and
supervision inspection related issues;
(5) The construction organization assists the construction organization or
submits a supervision inspection application to the supervision inspection
agency according to its requirements; submits the construction schedule
plan;
(6) The construction organization and the non-destructive testing organization
shall inform the supervision inspection agency of the construction and
testing progress in time; provide true and effective inspection materials
(Note 1-5).
Note 1-5: The inspection documents refer to the technical documents,
inspection records, inspection and testing records, test and testing reports,
qualification lists of welding operators and non-destructive testing personnel
related to the inspected products and construction projects.
1.5 Supervision inspection agencies and supervisory inspectors
(1) The supervision inspection agency undertaking the supervision inspection
of manufacturing (construction) shall obtain the corresponding
qualifications approved by the department responsible for the safety
supervision and management of special equipment (hereinafter referred
to as the special equipment safety supervision department); the inspectors
The supervision inspection procedures generally include acceptance of
applications, preparations for supervision inspections, implementation of
supervision inspections, issuance of supervision inspection certificates.
2.1.1 Acceptance of applications
The pressure piping component manufacturer and building organization (or
construction organization) shall submit the application for the pressure piping
supervision inspection to the supervision inspection agency before
manufacturing or construction.
After the supervision inspection agency accepts the supervision inspection
application, it shall provide the applicant organization with a sample supervision
inspection contract; inform the applicant organization of the list of relevant
materials that need to be provided.
2.1.2 Preparation for supervision inspection
The supervision inspection agency compiles the supervision inspection outline
(plan) according to this Regulation and quality plan (construction program),
combined with the actual situation of manufacturing (construction); forms a
supervision inspection project team; appoints the person responsible for the
supervision inspection project team; allocates necessary supervision
inspections personnel; configures testing equipment, etc.
2.1.3 Implementation of supervision inspection
The supervision inspection agency shall, in accordance with Article 2.2 of this
Regulation as well as the requirements of the "Special requirements for
supervision inspection of pressure piping components manufacturing" (see
Appendix A), "Special requirements for supervision inspection of long-distance
piping construction" (see Appendix B), "Special requirements for supervision
inspection of public pipeline construction" (see Appendix C), "Special
requirements for supervision inspection of industrial pipeline construction" (see
Appendix D), combined with the technical characteristics and actual conditions
of the pressure pipeline, notify the items, contents and requirements of the
supervision inspection to the inspected organization in writing form. For long-
distance pipelines, the supervision inspection agency shall make disclosure of
the supervision inspection plan to the inspected organization in the form of a
meeting.
During supervision inspection, supervisory inspector shall carry out supervision
inspection work in accordance with the supervision inspection outline (plan).
Supervisory inspector can conduct supervision inspections on supervision
inspection items in accordance with safety technical specifications, relevant
standards, design documents through data review, physical inspection, on-site
(2) For physical inspection, supervisory inspector shall re-examine the self-
inspection qualified items of the inspected organization in accordance with
the items and requirements specified in this Regulation; verify whether the
results are true and correct, and whether they meet the requirements of
safety technical specifications and relevant standards;
(3) For on-site supervision, the supervisory inspector shall supervise the
manufacturing (construction) activities on-site in accordance with the
items and requirements specified in this Regulation; supervise whether
the manufacturing (construction) activities meet the requirements of safety
technical specifications, relevant standards, quality assurance system
documents.
If there are clear requirements on the number of sampling-checks in this
Regulation, follow this Regulation; if there is no clear requirement, the number
and methods of sampling-checks shall be specified in the supervision
inspection outline (plan) according to the implementation status of the quality
assurance system of the inspected organization and the types of items to be
inspected.
Supervision inspection work shall be recorded (including relevant meeting
minutes, etc.); the records shall be true, accurate, traceable.
2.2.3 Classification of supervision inspection items
Supervision inspection items are divided into Category A, Category B, Category
C; their requirements are as follows:
(1) Category A item is the key item that has a significant impact on the safety
performance of pressure pipelines. When the manufacturing (construction)
process reaches this type of item, the inspected organization shall notify
the supervisory inspector to arrive at the site in advance; the supervisory
inspector will supervise the implementation of this item on site. After the
result is confirmed by the supervisory inspector and signed on site, the
manufacturing (construction) can be continued;
(2) Category B is a key item that has a great impact on the safety performance
of pressure pipelines. Supervisory inspectors generally conduct on-site
supervision or physical inspection. If they cannot arrive at the site in time,
the inspected organization can continue to carry out the manufacturing
(construction) of the item after passing the self-inspection, then the
supervisory inspector will conduct an on-site inspection on the result of
the manufacturing (construction) item, to confirm whether the item meets
the requirements;
(3) Category C is an inspection item that has an impact on the safety
(3) For component combination devices, products with the same design
documents, the same process documents and the same quality plan can
form a batch.
A2 Supervision inspection items and requirements
A2.1 Production license qualification and type test documents (Category C)
(1) Check whether the manufacturer has the corresponding license
qualification, whether its product has obtained the type test certificate,
and it is within the validity period;
(2) Check whether the type test report (certificate) of the submerged arc
welded steel pipe and polyethylene pipe covers the supervision
inspection products;
(3) Check whether the pressure piping components in the component
assembly device have obtained the pressure piping component
manufacturing license and type test certificate in accordance with the
requirements of the safety technical specifications;
(4) If the design of the component assembly device is outsourced, check
whether it is designed by an organization with the corresponding
pressure piping design qualification, whether the approval procedure of
the design general drawing meets the requirements; if it is designed
according to the pressure vessel or boiler, it shall follow its requirements.
A2.2 Design documents (Category C)
Check the design documents, including the following:
(1) Whether the design document approval procedure complies with the
requirements of the safety technical specifications and quality assurance
system documents;
(2) Whether the external design documents are confirmed in accordance with
the requirements of the quality assurance system;
(3) Whether the safety technical specifications adopted in the design and
related standards, and the pressure piping component material standards
in the component assembly device are current and effective;
(4) Whether the non-destructive testing requirements, heat treatment
requirements, pressure test requirements and leak test requirements
specified in the design documents meet the requirements of safety
technical specifications, relevant standards and contracts, whether the
design drawing approval procedures meet the requirements;
Check whether the original or copy of the material quality certificate is complete
and whether it meets the relevant standards and technical requirements of the
contract; the copy shall be affixed with the official seal of the business
organization and the seal of the person in charge.
A2.5.2 Material marking and traceability (Category B)
Check whether the physical mark of the material meets the material standard
and whether it is consistent with the material quality certificate. Check on-site
whether the material marking method and marking transplantation of the
production site of the manufacturer meets the requirements of the quality
assurance system documents.
A2.5.3 Material acceptance (Category C)
Check whether the material acceptance documents meet the requirements of
the quality assurance system documents.
For the polyethylene pipe, it shall check each batch of mixed ingredients; check
whether the selected mixed ingredients (grades) of the product meet the
requirements of the product design documents and product standards; check
whether the designations of the mixed ingredients meet the requirements of the
process documents.
A2.5.4 Material reinspection
Where product standards and design documents have material re-inspection
requirements, the supervision inspection items ...