CE mark certification of Pressure Equipment Directive 97/23/EC (short for PED) has been compulsorily enforced since May, 29th, 2002. European Community is China’s third largest trading partner after Japan and the USA. Therefore, the instruction’s implementation definitely draws interests of Boiler and Pressure Vessel industry in our country, especially the export enterprises.
In recent years, with the improvement in quality and management level of China’s boiler and pressure vessel industry, especially the quick increase in enterprises assembled with ASME boiler and pressure vessel certificate, more and more foreign manufacturers have targeted their purchasing goals in China. At the same time, domestic enterprises have succeeded in providing high quality products with low price. Since early 2002, in order to meets the needs of European market, many companies have successively conducted PED certification. They are: Shanghai Yangyuan Pressure Vessel Co., Ltd, Pall Corporation (Beijing), Liyang Yunlong Chemical Equipment Group Corp, Shanghai Morimatsu Pressure Vessel Co., Ltd, Nanjing Baose Co., Ltd and Jinxi Chemical Machinery (Group) Co., Ltd.
PED certification mode selection and detailed requirements of enforcement in typical modes
1. Conformity auditing mode of PED certification
1.1. Mode A: Internal production control
Manufacturers should compile technical documents under this mode. Technical documents include: general description of pressure-bearing equipments, design drawings, strength calculating sheet, adopted standards list, detection results and test reports.
1.2. Mode A1: Internal manufacturing detection with final evaluation and surveillance
Apart from the requirements referred in mode A, it is manufacturer that conducts final evaluation (final detection and pressure test). Authorized institutes will carry out nonscheduled surveillance spot check for pressure-bearing equipments being manufactured or are already completed.
Apart from CE mark and conformity announcement, it is authorized institutes’ responsibility to label codes on pressure-bearing equipment.
1.3. Mode B: EC type approval
Representative samples being tested to meet the instruction’s requirements by authorized institutes.
Content of manufacturing process have been added on the basis of mode A’s requirements. Authorized institutes will conduct auditing and certificate inspections issued by material manufacturer focused on the materials do not conform to European coordinative standards or European approval. Welding procedure is permanently ratified. Staff responsible for welding detection and NDT have already been certificated and ratified according to regulations. In the meantime, samples should be detected conforming to technical documents’ regulations.
EC type approval certificate will be issued by authorized institute and the validity term is 10 years.
1.4. Mode B1: EC design approval
It is certificated by authorized institutes that the design of a pressure-bearing equipment conforms to instruction requirements.
Auditing items are the same with mode B except that it is not necessary to detect samples conform to technical documents’ regulations.
EC design ratified certificate will be issued by authorized institute and the validity term is 10 years.
1.5. Mode C1: Type conformity
Manufacturers should guarantee that the pressure-bearing equipment conforms to type stated by EC type ratified certificate and instruction requirements. Authorized institutes will carry out nonscheduled surveillance spot check on pressure-bearing equipment being manufactured or already completed.
1.6. Mode D: Production quality guarantee
Manufacturers should carry out production, final tests and detection according to ratified quality system. Pressure-bearing equipments should be guaranteed to meet the needs of EC type ratified certificate or the type and instruction requirements stated by EC design ratified certificate.
Authorized institute will conduct quality system auditing and decide whether it conforms to relevant requirements. It is a must for authorized institute to carry out periodical auditing on quality system and a comprehensive auditing should be completed in every three years. Nonscheduled surveillance check will be conducted on manufacturers in order to make sure the smooth operation of quality system.
Each product should be labeled with CE mark and identified No. of authorized institute, at the same time, present written conformity announcement.
1.7. Mode D1: Production quality guarantee
Compile technical documents according to mode A. Manufacturers should carry out production, final tests and detection according to ratified quality system and ensure products conform to instruction requirements.
1.8. Mode E: Products quality guarantee
Manufacturers conduct final detection and test according to ratified quality system, at the same time, ensure pressure-bearing equipments conform to type and instruction requirements stated by EC type approved certificate.
Others are the same with mode D.
1.9. Mode E1: Products quality guarantee
Compile technical documents according to mode A. Manufacturers conduct final detection and test according to ratified quality system, at the same time, ensure pressure-bearing equipments conform to instruction requirements.
1.10. Mode F: Products detection
Manufacturers should guarantee pressure-bearing equipments meet the needs of EC type ratified certificate or the type and instruction requirements stated by EC design ratified certificate.
Authorized institute should conduct check and detection on every product to ensure its type conformity and instruction requirements matching. The focus should be concentrated on: verifying the welding and NDT staff has been evaluated and ratified according to regulations; certificate issued by material manufacturer; products’ final test and detection test (pressure test) and check on safety equipments.
Each product should be labeled with CE mark and identified No. of authorized institute, at the same time, present written conformity announcement.
Products conformity certificate issued by authorized institute.
1.11. Mode G: Single validation
Compile technical documents according to mode A.
Authorized institute conducts detection on design and structure on pressure-bearing equipment. In the meantime, conduct detection and tests according to relevant standards during the manufacturing process.
Apart from the items in mode B, the detection items of authorized institute should include final detection and detection test (pressure test) and check on safety equipments.
Equipments check.
Each product should be labeled with CE mark and identified No. of authorized institute, at the same time, present written conformity announcement.
Products conformity certificate issued by authorized institute.
1.12. Mode H: Overall quality guarantee
Manufacturers conduct ratified quality system enforcement include design, manufacturing, final detection and tests. In the meantime, pressure-bearing equipments should be guaranteed conform to instruction requirements.
Quality system auditing, scheduled auditing and nonscheduled surveillance check conducted by authorized institute is the same with mode D.
Each product should be labeled with CE mark and identified No. of authorized institute, at the same time, present written conformity announcement.
1.13. Mode H1: Overall quality guarantee with design ratified and final evaluated surveillance
Apart from the requirements in mode H, the following should be added:
EC design ratified certificate will be issued by authorized institute after a qualified auditing of the design approval application put forward by manufacturers.
Authorized institute will conduct final evaluation (final detection and pressure test) enforcement surveillance detection on manufacturers by nonscheduled auditing.
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