What does the three quality inspection system mean?

Self-inspection, mutual inspection and special inspection

Quality "three inspections" refer to self-inspection, mutual inspection, special inspection or first inspection, patrol inspection and completion inspection. After the production of products is completed, producers are required to "self-check" to check whether their products meet the quality requirements and whether there are quality problems. In the "mutual inspection" between producers, the workshops are basically equipped with full-time quality inspectors, and the final products are "specially inspected" by the quality inspectors to finally determine whether there is any problem with the product quality and whether it is qualified or not, and then the product quality certificate can be issued.

Self-check

Operators must carry out self-inspection in accordance with the quality requirements of corresponding subdivisional work during operation, and can continue construction only after the team leader has passed the acceptance.

The builder shall urge the team leader to conduct self-inspection and create self-inspection conditions for the team (such as providing relevant forms and assisting in solving testing tools, etc.). ), and check the quality of team work in the middle.

Mutual inspection

For mutual inspection between jobs, after the last procedure is completed and before the construction of the next procedure, the team leader should conduct handover inspection and fill in the handover checklist, and the next procedure can be carried out only after both parties sign it.

After the finished product is produced in the previous procedure, the finished product protection formalities shall be handled in the next procedure, and then the unit in the next procedure shall be responsible for the damage, pollution and loss of the finished product.

special inspection

All subdivisional work, concealed inspection and pre-inspection projects must be carried out according to procedures, and special inspectors shall be invited as a working procedure for quality inspection and evaluation.

Key points of implementing the three noes principle

Who did it, who is responsible.

Once the product design and development are completed and the process parameters are clear, the quality fluctuation of the product is a problem in the manufacturing process. Everyone's quality responsibility begins with the acceptance of the qualified products in the previous process. It is the biggest task of employees to standardize the operation and ensure that the product quality in this process meets the requirements. Once defects are found in this process or bad information is received from subsequent processes, employees must immediately stop production, investigate the reasons, take countermeasures and be responsible for product quality.

Who writes who's checks.

The producer of the product is also the inspector of the product, and the inspection of the product is only a link in the production process. Only by checking and confirming that the production is qualified can the qualified products flow into the next working procedure. Through self-inspection, the operator can know more clearly the state of the processed products in this process, which is conducive to the continuous improvement of the processing level and product quality of employees.

Work standardization

From the design and development of products and the setting of process parameters, it is necessary to standardize and standardize all the operation steps and details in the operation process, and make them constantly perfect. Every employee must also strictly carry out standardized operations. Standardization is the best working method in this process and the only way to ensure the consistency of product quality. Otherwise, many defective products can't be found, and the "three noes" can only create confusion, but not quality.