1, inspection and testing institutions carry out internal audit on the basis of international or national standards applicable to the management system adopted by the organization, as well as internal management systems and norms and applicable laws and regulations.

2. The principles to be followed are:

(1) Pay attention to customers;

(2) leadership;

(3) full participation;

(4) technological method;

(5) Management methods of the system;

(6) continuous improvement;

(7) Decision-making method based on facts;

(8) mutually beneficial relationship with suppliers.

How to improve the effectiveness of internal audit of inspection and testing institutions

1. Good personal qualities of internal auditors are the premise for the smooth development of internal audit work.

Internal auditor plays an important role in internal audit, and plays a supervisory and consulting role in the normal operation and improvement of quality system. High-quality internal auditors are the basis for the success of internal audit. Internal auditors should maintain relative independence, impartiality and integrity, be proficient in quality standards and management conditions, play an exemplary role in the effective implementation of the quality system, and become activists in earnestly implementing and implementing the quality system. In the internal audit, the internal auditor must have a sense of the overall situation and enhance the quality concept. Internal auditors should not only discover the nonconformities or defects in the operation of the quality system in time, but also dig out the inefficiency and potential problems of the quality system. Relying on external training, independent learning and practical participation to continuously improve the quality of internal auditors is a solid foundation for the success of internal audit.

2. The leadership style and methods of managers are the key to ensure the quality of internal audit.

The key to laboratory work is leadership. Internal audit is a continuous internal management behavior. Without the support of managers, internal audit will be difficult to carry out and will not achieve the expected results. Internal audit is also a conscious internal management behavior, not a passive response activity. Therefore, internal audit needs the understanding, support and cooperation of all audited departments. Internal audit is a routine audit work based on the present situation of the system, with the direction of finding problems and the purpose of solving problems. Any system will always have some problems, and any department or activity is no exception. There is no end to quality improvement. Therefore, internal audit is to serve the system, to continuously improve, not to punish mistakes.

3. An internal audit method that conforms to the actual situation of the organization is the prerequisite for the success of internal audit.

Because internal audit is aimed at each organization, and the actual situation of each organization cannot be exactly the same; Even the same organization may have different institutional settings and distributions in different periods and stages; Within the same organization, the branches may not be exactly the same. Therefore, the mode of internal audit must be planned according to the actual situation of the organization, and centralized or rolling internal audit can be selected according to the available time and personnel, and one or more internal audits can also be selected according to the scale of inspection and testing institutions.

4. The improvement of the follow-up work of internal audit is the top priority.

Internal audit is an important and normal information source, foundation and driving force for quality improvement activities of management system. After each internal audit, it should lead to the realization of quality improvement behavior, which is one of the basic signs to measure the actual effect of internal audit. The follow-up work of internal audit includes the implementation of corrective measures for problems found in internal audit by the audited department and the follow-up audit of its implementation by internal auditors. The implementation of these two tasks is directly related to the effectiveness of internal audit work, is an important part of improving the quality system, and is an effective way to improve management level. We must put the internal audit process and the rectification after internal audit in the same important position, give full play to the full effectiveness of internal audit work, and improve the quality management system.

5. "Promoting the improvement of quality management level" is the soul of internal audit.

The work of implementing standards begins with management and ends with management. Internal audit must always take "promoting the improvement of quality management level" as the fundamental starting point and focus. From the planning of internal audit, the internal audit mode to be considered should be able to promote the improvement of management; In the specific audit, we should audit according to such clues. In the overall evaluation of internal audit, we should judge whether it has promoted the improvement of the management level of the audited party. However, it is not easy to urge organizations to pay attention to improving their own management, and it is impossible to meet the standard requirements for a long time.