Since October 1, 2019, the State Administration for Market Regulation has included some explosion-proof electrical equipment in the scope of national mandatory product certification, which applies to those belonging toCCCThe explosion-proof electrical equipment for mandatory product certification adopts the market access method of "type inspection factory review".

Explosion proof electrical3CWhat are the requirements for factory audit certification?

1、 Basic requirements

The factory should be equipped with sufficient inspection and testing instruments and equipment to ensure the capability of the instruments and equipment used in procurement, production, final inspection and testing, and meet the inspection and testing requirements for mass production of certified products. Inspection and testing personnel should be able to use instruments and equipment correctly, master inspection and testing requirements, and effectively implement them.

2、 Calibration and verification

The inspection and testing instruments and equipment used to determine whether the certified products produced meet the specified requirements should be calibrated or verified according to the prescribed cycle. The calibration or verification cycle can be set according to the frequency of use of the instruments and equipment, the previous calibration situation, etc; For internal calibration, the factory should specify calibration methods, acceptance criteria, and calibration cycles, etc; Calibration or verification should be traced back to national or international standards. The calibration or verification status of instruments and equipment should be easily identifiable by users and management personnel; The factory should keep calibration or verification records of instruments and equipment. For calibration or verification activities entrusted to external agencies, the factory should ensure that the capabilities of the external agencies meet the calibration or verification requirements and keep the relevant capability evaluation results.

3、 Explosion proof products require the following inspection equipment:

1. Calipers

2. Micrometer (only necessary for explosion-proof type)

3. Dial gauge (only necessary for explosion-proof type)

4. Blade ruler or flatness testing equipment (only applicable)Explosion proofType essential)

5. feeler gauge (only necessary for explosion-proof type)

6. Roughness sample block or roughness meter (only necessary for explosion-proof type)

7. Thread ring gauge and plug gauge (only necessary for explosion-proof type)

8. Explosion proof shell hydraulic testing machine (only necessary for explosion-proof type)

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