SIST EN 16662-3:2026

SIST EN 16662-3:2026 is the Slovenian adoption of EN 16662-3:2026 from CEN. It specifies general audit and quality system requirements for the production of supplementary grip devices (SGD) for tyres of passenger cars and light duty vehicles, so manufacturers, testing bodies and inspection bodies can check production control and surveillance in a consistent way.

What does SIST EN 16662-3:2026 specify?

SIST EN 16662-3:2026 covers the production-side conformity assessment for SGD. It sets out how quality is shown through initial testing and continuous factory production control, and how third-party surveillance is carried out.

The scope is limited to general audit and quality system requirements for production. The document is organized around the path from initial testing to ongoing control and surveillance, so a reader can see what must be proven before a product is marked as conforming and how that status is maintained.

What are the key requirements of SIST EN 16662-3:2026?

SIST EN 16662-3:2026 requires both initial testing and ongoing production control for SGD. In practice, that means conformity is not based on one test alone - the manufacturer must also control production over time and be ready for external surveillance.

Initial testing and proof of conformity

Clause 4.1 states that quality proof comes from initial testing according to EN 16662-2 and from continuous factory production control. Clause 4.2 says a product intended to conform with the EN 16662 series must undergo prior testing covering the relevant specifications, and the test report from an accredited testing body is the basis for marking or placing the product on the market. For a manufacturer, this means the first conformity claim depends on documented test results, not only on internal checks.

Information that must accompany testing

Clause 4.3 requires the test reports for EN 16662-1 and EN 16662-2 to be provided in a language agreed by the inspection body. The applicant must supply the producer’s name and address, production site details, type designation and size of the SGD, and technical specifications such as drawings and dimensions. The testing body must identify itself and its accreditation number and provide the relevant audit reports. In practice, this gives the inspection body enough traceability to connect the tested sample with the product being controlled.

Production control in manufacture

Clause 4.4 defines production control as continuous or short-interval examination by the manufacturer of products and/or the production process. It covers dimensions according to the envelope classes in EN 16662-1 and the properties tested in EN 16662-2. The frequency is to be set using statistical methods based on production and delivery volumes, within an internal quality assurance system. This means the manufacturer must plan checks according to actual output, document them, and keep records available for audit.

Third-party surveillance and follow-up

Clause 4.5 requires third-party surveillance at least once every 2 years. The inspection body reviews documentation and factory production control results, and it checks test results on sufficient components or product samples from ongoing production, including all tests defined in EN 16662-2. Changes to the SGD must be reported to the testing body, and only safety-relevant modifications trigger new initial testing. If deviations are found, they must be corrected within 3 months; if they cannot be corrected, national authorities and the testing body are informed without delay.

Surveillance report

Clause 4.6 requires the inspection body to prepare a surveillance report covering the reviewed documentation and the sample tests performed. If deviations remain unresolved, they are recorded in the report, and the applicant can no longer claim compliance of the concerned products with EN 16662-1.

What terms does SIST EN 16662-3:2026 define?

SIST EN 16662-3:2026 uses the terms and definitions from EN 16662-1. Key terms include:

• Supplementary grip device (SGD) - the product category covered by the EN 16662 series, used on tyres of passenger cars and light duty vehicles.
• Factory production control - the manufacturer’s ongoing checking of product and process characteristics during production.
• Initial testing - the first set of tests used to show that the product meets the relevant requirements before conformity is claimed.
• Testing body - the body that performs testing and issues the test report used for conformity assessment.
• Inspection body - the body that carries out surveillance and reviews production control and sample testing.
• Applicant - the party seeking conformity recognition or market placement for the SGD.
• Third party - an independent body involved in surveillance.

Who uses SIST EN 16662-3:2026?

SIST EN 16662-3:2026 is used by SGD manufacturers who need to set up production control and prepare for surveillance. It is also used by accredited testing bodies and inspection bodies that review test results, factory production control and product samples.

Quality managers and buyers use it to understand what evidence must exist before a product can be marked as conforming to the EN 16662 series. National authorities may also rely on the documented surveillance process when reviewing negative findings.

Which standards are used with SIST EN 16662-3:2026?

• EN 16662-1 - provides the general safety and performance requirements and the envelope classes referenced for production control checks.
• EN 16662-2 - provides the specific test procedures used for initial testing and for surveillance checks.
• EN ISO/IEC 17000 - gives conformity assessment vocabulary and general principles in the bibliography.
• EN ISO/IEC 17020 - gives requirements for bodies performing inspection in the bibliography.
• EN ISO/IEC 17025 - gives requirements for the competence of testing and calibration laboratories in the bibliography.

What does the SIST EN 16662-3:2026 document contain?

SIST EN 16662-3:2026 contains a procedure-based framework for proving production quality of SGD. It includes the information needed for initial testing, the responsibilities of the applicant and testing body, and the way surveillance findings are reported.

The core content is practical rather than formula-based: it tells the reader what must be checked, documented and reported in production control and third-party surveillance. It also links those checks to EN 16662-1 and EN 16662-2, so the production system stays aligned with the product requirements and test methods used for conformity assessment.