Environmental Protection Equipment: Biogas Fermentation Equipment EAC Certification (CUTR Certification)  
I. Mandatory Nature and Scope of Certification  
Legal Basis  
Biogas fermentation equipment falls under the category of environmental protection machinery and pressure equipment combination products, and must comply with the mandatory requirements of the Eurasian Economic Union (EAEU) and Customs Union Technical Regulations (TR CU). Products without EAC certification cannot clear customs in EAEU member states and are prohibited from being sold in local markets (for reference).
Scope of Applicable Products  
Core Equipment: Biogas fermentation tanks (anaerobic reactors), mixing systems (mechanical/hydraulic mixers), gas collection devices (gas hoods, pipes);  
Supporting Equipment: Gas storage tanks (low-pressure/high-pressure), desulphurisation towers (dry/wet desulphurisation), biogas generators (if integrated);  
Control Systems: Electrical control cabinets, sensors (temperature/pressure/liquid level).
II. Core Technical Regulations and Corresponding Components
Biogas fermentation equipment must comply with multiple technical regulations across various fields, as detailed below:
Regulation Number    Regulation Name    Applicable Components    Key Requirements
TR CU 010/2011    Machinery Safety    Mixing systems, fermentation tank supports    Structural strength, protection of moving parts, environmental adaptability (-30°C to +50°C)
TR CU 032/2013    Pressure Equipment Safety    Gas Storage Tanks, High-Pressure Fermentation Tanks    Pressure Testing (1.5 times rated pressure), Material Certification (Stainless Steel/Pressure Vessel Steel)
TR CU 004/2011    Low Voltage Equipment Safety    Electrical Control Cabinets, Sensors    Insulation Resistance, Grounding Protection, Overload Protection (Suitable for Humid Environments)
TR CU 020/2011    Electromagnetic compatibility (EMC)    Control systems, biogas generators    Electromagnetic interference resistance, radiation disturbance limits
TR CU 041/2017    Chemical product safety    Desulphurisation agents (e.g. iron oxide)    Chemical substance migration limits, toxicity testing
TR CU 005/2011    Food contact material safety (optional)    Fermentation tanks (if used for producing biofertilisers)    Materials with no harmful migration (e.g. stainless steel 304)
III. Certification Process and Required Documents
1. Selection of Certification Mode
EAC Certificate of Conformity: Applicable to batch-produced biogas equipment (e.g. gas storage tanks, fermentation tanks), requiring factory audit (to verify production line consistency), valid for 1-5 years;
EAC Declaration of Conformity: Applicable to single batches or small-scale equipment (e.g., desulphurisation towers, sensors), no factory audit required, but a third-party test report must be provided.  
2. Specific Process (Example for Mass Production)  
A[Submit Application Form] --> B[Confirm Product Customs Code (HS Code)] 
B --> C[Certification body determines regulatory combination (e.g., TR CU 010+032+004)] 
C --> D[Submit technical documents + samples]
D --> E[Laboratory testing (mechanical/pressure/electrical/EMC)]
E --> F[Factory audit (if required)] 
F --> G[Modify documents/rectify (if testing fails)] 
G --> H[Issue EAC Certificate]  
H --> I[Affix EAC Mark + Clear Customs]  

Timeline: Standard equipment requires 4-6 weeks (including testing and factory audit); complex pressure equipment (e.g., high-pressure gas cylinders) requires 8-12 weeks.  
3. Required Document Checklist  
Basic Documents: Application Form, Business License, ISO 9001 Quality Management System Certificate (if applicable);
Technical Documents: Product drawings (fermentation tank structure, electrical schematic diagrams), Russian-language user manual (including safety warnings), material certificates (pressure vessel steel/stainless steel);
Test Reports: Mechanical strength testing (TR CU 010), pressure testing (TR CU 032), electrical safety testing (TR CU 004), EMC testing (TR CU 020);
Other: EAEU import agreement (for customs clearance), desulphurisation agent chemical safety report (TR CU 041).

4. Key technical requirements and testing priorities
1. Pressure equipment (gas storage tanks/fermentation tanks)
Material requirements: Pressure vessel steel compliant with GOST standards (e.g., 16MnDR) or food-grade stainless steel (304/316) must be used, with material certificates provided;
Pressure Testing: Conduct a hydrostatic test at 1.5 times the rated pressure in accordance with TR CU 032/2013, with no leakage or deformation;
Safety Accessories: Pressure gauges and safety valves (compliant with GOST 12.2.085-2002) must be installed and calibrated regularly.
2. Mechanical Systems (Mixers/Fermenters)
Structural Strength: The stirrer shaft must pass a torsional strength test (Appendix of TR CU 010/2011) to prevent breakage during operation;  
Protective Design: Moving parts (such as stirrer blades) must be equipped with protective covers to prevent operator contact;  
Environmental Adaptability: Must pass a -30°C low-temperature startup test (for the northern markets of Russia and Kazakhstan).  
3. Electrical and EMC
Insulation Resistance: Electrical components must have an insulation resistance of ≥2MΩ in a humid environment (relative humidity 90%) (TR CU 004/2011);
EMC Testing: The control system must pass radiation disturbance (≤30dBμV/m) and immunity (static discharge ±8kV) tests (TR CU 020/2011).

V. Common Risks and Mitigation Recommendations
Non-compliance with pressure equipment material standards:
Risk: Using ordinary carbon steel instead of pressure vessel steel, resulting in failure of pressure testing;
Mitigation: Provide material certificates in advance and select suppliers compliant with GOST standards (e.g., pressure vessel steel from Baosteel or Ansteel).
Electrical EMC non-compliance:
Risk: The control system lacks shielding design, leading to excessive electromagnetic interference;
Mitigation: Install electromagnetic shielding layers inside electrical control cabinets and use interference-resistant cables (e.g., RVVP shielded cables).  
Incomplete technical documentation:  
Risk: Russian-language manuals lacking safety warnings (e.g., ‘High-pressure hazard’), leading to certification delays;  
Mitigation: Commission a professional translation agency to translate manuals, ensuring they include all safety information required by the EAEU (refer to 9).
6. Recommended Certification Bodies  
Select EAEU-authorised certification bodies to ensure certificates are valid within member states:  
Russian Certification Centre (GOST R): Official background, specialising in pressure equipment and mechanical certification, with high recognition;  
Shanghai Jinghe Industrial Equipment Testing Co., Ltd.: Russian Union institution's office in China, offering one-stop testing and certification services, an experienced third-party institution supporting multi-regulation combination certification for biogas equipment.
7. Reference Cases
Case 1: A biogas fermentation tank manufacturer in Jiangsu Province
Product: 1,000 m³ anaerobic fermentation tank (pressure-rated);
Certification: Certified under TR CU 010/2011 + TR CU 032/2013;
Key Improvements: Upgraded the fermentation tank material from Q235 steel to 16MnDR pressure vessel steel, passing a 1.5-times pressure test.
Case 2: A desulphurisation tower manufacturing company in Shandong Province  
Product: Dry desulphurisation tower (using iron oxide desulphurisation agent);  
Certification: Passed TR CU 041/2017 + TR CU 010/2011 certification;  
Key improvements: Provided a chemical safety report for the desulphurisation agent, proving no harmful migration.
Certification body: Shanghai Jinghe Industrial Equipment Testing Co., Ltd., specialising in product certification and testing for Russia and Eurasian Economic Union countries, is the Chinese representative office of the Russian Testing and Certification Group.