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Enterprises that operate the integral core products of mining conveyor belts can apply for CMAC certification.
First, the implementation of standards.
MT T317-2019 Conveyor belt integral core for coal mines
Second, the authentication mode.
Product inspection + factory inspection + post-certification supervision.
Third, the division of certification units.
1.Elements are divided according to the radial nominal tensile strength interval.
2.The radial nominal tensile strength is divided into 3 sections according to M680 M1000, M1250 M1600 and M1800 M3400.
Fourth, the certification process.
Certification application, preliminary examination and acceptance, product inspection, factory inspection, certificate issuance, post-certification supervision.
V. Application Requirements.
1) The business license is within the validity period, and the applied product is within the scope of business;
2) Have the production and operation premises and technical capabilities suitable for the applied products;
3) Have a quality management system suitable for the applied product, and operate effectively;
4) Have the production conditions suitable for the applied products, and the equipment and ability to meet the requirements of process control and factory inspection;
5) Have a production process that meets the requirements and carry out effective control.
6. Documents should be prepared.
1.Application.
2.License.
3.Technical Documentation.
a.The product implements a standard or technical condition.
b.Product drawings.
c.Instruction manual for the product.
d.Products**.
e.Other. 4.Relevant supporting materials.
7. Product technical parameters.
The radial nominal tensile strength of the core is n mm
Core material. The number of layers with cores.
The width of the core is mm
8. Factory inspection items.
Appearance quality. Width.
Length. Number of layers.
Cotton content. Tensile strength and tensile elongation at break.
Overall tensile strength.
9. Sample inspection.
10. Review content.
1) Document review.
The inspection team leader is responsible for the implementation of document review of the factory's quality assurance capability management documents and related materials, and the completion of the "Document Audit Report". When the documents submitted are not sufficient to meet the requirements, the inspection team leader shall request supplementary materials from the certification applicant.
If the applicant's quality management system certification includes the application for product manufacturing or obtaining the safety mark of mining products, the document review may not be carried out after confirmation by the inspection team.
2) On-site inspection.
1) Conduct factory quality assurance capability inspection in accordance with the "CMAC Product Certification Rules Factory Quality Assurance Capability Requirements" and Annex 3;
2) Product consistency check.
During the factory inspection, the consistency of the products applying for certification should be checked at the production site, and at least one specification and model of the certified products should be selected for consistency inspection.
Focus on checking the following:
a.The identification of the certified product, the model and the type test report or the certification body of the testing agency confirm whether the product description is consistent;
b.Whether the structure of the certified product (mainly the structure involving safety performance, including design, process, etc.) is consistent with the sample during the type test;
c.Whether the main raw materials used in the certified products are consistent with those declared during the type test and confirmed by the certification body;
d.The verification of factory inspection and testing capabilities and inspectors' abilities can be carried out in the form of on-site designated tests or witness tests, and the test content is to confirm all the factory inspection items required by the technical documents.
Ten. 1. Review time.
100 people and less 4 people per day.
101-300 people 5 person-days.
301 people and above 6 person-days.
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