How does Huilin ensure safety and compliance in equipment production?

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Accepted Answer

Huilin has specialized in PSA nitrogen and oxygen equipment since 2009. Across the full production process of our nitrogen and oxygen generators, we implement safety and compliance through eight dimensions:

1. Quality management system: a complete QMS with a designated management representative and a standardized CAPA process closes the loop on deviations, non-conforming products and customer feedback.

2. Design-stage compliance: vessels follow GB150 and other pressure vessel standards; export projects match rules such as ASME, ISO 8010 and SABER. Pipelines use stainless or aluminum alloy; the PLC applies safety-redundant logic with interlocks for over-pressure, over-temperature and similar conditions.

3. Incoming material control: pressure-bearing plates, valves, adsorbents, instruments and PLC components are checked against certificates and third-party reports; non-qualified sources for key parts are rejected, and non-conforming items quarantined and returned.

4. Manufacturing safety control: pressure-bearing welding follows the WPS (Welding Procedure Specification) by certified welders with complete procedure qualification. Special operations such as hot work and lifting need permits; tooling is calibrated; in-process inspection blocks non-conforming work.

5. Inspection and testing: vessels undergo NDT and hydrostatic testing; machines run air-tightness, pressure commissioning, purity and interlock tests; instruments such as pressure gauges and flow meters are calibrated periodically.

6. Documentation: each unit ships with P\&IDs, installation and electrical drawings, conformity and material certificates, welding and test records, pressure-vessel documents, operation and safety manuals and other documents; export units add matching certification under one-file-per-unit traceability.

7. Personnel: welding, NDT, inspection, quality management and similar positions are staffed by certified personnel with regular training; safety duties are assigned to individuals.

8. After-sales: HUILIN provides operation training and collects site feedback; quality or safety hazards trigger CAPA to trace root causes and prevent recurrence.