Three simultaneous occupational hazard factors

1. Pre evaluation stage (feasibility study period) - analogy testing

2. Design phase of protective facilities (preliminary design phase) - current situation inspection
3. Control effect evaluation stage (trial operation period) - on-site inspection
2、 Testing institutions and qualification requirements

• The hazard level determines the depth of detection：

• General ProjectPre evaluation filing, independent acceptance of control effect evaluation;

• Serious projectPre evaluation review+design review+regulatory department organized acceptance, with a higher frequency of testing (such as once every 3 years for current situation evaluation).

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• Change needs to be retested：

• If significant changes in scale or process lead to an escalation of hazard risks, it is necessary toRe evaluate and retest.

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• Key points of data compliance：

• The detection values need to be comparedOccupational Exposure Limits for Hazardous Factors in the Workplace (GBZ 2.1)；

• The report must includeSampling point map, instrument calibration record, detection method standard number.

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phase	Detection Type	core mission	output file	regulatory requirements
Pre evaluation	Analogous detection	Predicting the types and intensities of hazardous factors	Occupational Disease Hazard Pre assessment Report	General project filing, review of heavy/relatively heavy projects
Design of protective facilities	status quo detection	Verify the effectiveness of design protection measures	Special section on protective facility design	Serious projects require review by regulatory authorities
Control effect evaluation	on-site testing	Acceptance of actual operational performance	Control Effect Evaluation Report	Self acceptance of general projects, acceptance by regulatory authorities for heavy/relatively heavy projects




• Process leaving tracesSave sampled videos and raw data for future regulatory audits;

• Integrate the 'three simultaneities'Merge occupational health and safety facility testing to reduce duplicate costs.

  Hazard identification comes first, detection data is centered, and protection is implemented laterThrough standardized testing throughout the entire process, the occupational disease risk chain is blocked from the source, ensuring both project compliance and worker health protection meet the standards.