1, first factory inspection

Before factory inspection, the following documents shall be prepared for inspection:

Organization chart of the company

Quality control flow chart

flow chart

Product change flow chart or document

Training records of quality control personnel and personnel in key positions

Incoming inspection related documents (such as standards, work instructions, etc. )

Process (production) inspection related documents

Documents related to shipment inspection

Equipment management related documents (such as calibration memory, equipment account, etc.). )

Basic production equipment (such as high-voltage instruments, etc.). )

Unqualified product control

At that time, UL engineers will check the documents and the site and communicate with your company.

2. Annual factory inspection

The materials and procedures to be prepared for the annual factory inspection are basically the same as those for the first factory inspection, but the annual factory inspection needs to submit the documents required for consistency inspection. Please refer to the factory inspection user manual for specific requirements.

Second, the factory inspection content:

1, organization and quality system

The position, responsibility and work of quality department in the factory

Personnel situation (actual cognition and operation of QC personnel and key stations)

2. Incoming inspection

Inspection conditions (environment, equipment, measurement/calibration, personnel)

Stacking and identification of items to be inspected, qualified products and waste products

Implementation of incoming inspection (work instruction: including sampling standard, AQL level, inspection method and judgment, test record, judgment and release, etc. )

Audit of suppliers:

3. Warehouse

Warehouse conditions (complete machine and parts)

Storage and identification of parts and finished products, storage and delivery of finished products.

The process of picking and delivery, and the control documents of picking and delivery.

Check BOM file (parts list)

4. Production process

Product identification and traceability

Disposal of nonconforming products in production process

Work instructions and original records of inspectors

5. Routine inspection

Job description, operating conditions and test records

Measurement/approval and daily function test records of safety test equipment

6. Sampling inspection before shipment (final inspection)

Working instruction for sampling inspection (sampling standard: AQL level and inspection method)

Sampling record

7. Equipment inspection

Security test equipment account

Approval methods and records of major equipment

Internal approval methods and records

8. Compliance inspection of certified products (applicable to annual inspection)

Whether to save and provide the supporting documents, photos and copies issued by UL,

Whether to keep and provide records of factory consistency inspection,

Arrange the production of certified products or keep pre-produced certified products in the warehouse.

UL inspectors check whether there is any discrepancy or violation of safety between structural data and photo data.