Document ID: chunk:federal_register_of_legislation:F2012C00357:front:0:p25
Version: federal_register_of_legislation:F2012C00357
Segment Type: other
Provision Reference: 
Character Range: 68230–70825

and the strength test on the buckle, the attachment mountings, the belt adjusting devices and, where necessary, the retractors.

           7.1.3. Two belts or restraint systems are required for the inspection of the buckle, the micro‑slip test and the abrasion test.  The belt adjusting device operating test shall be conducted on one of these two samples.

           7.1.4. The sample of strap shall be used for testing the breaking strength of the strap.  Part of this sample shall be preserved so long as the approval remains valid.

7.2. Corrosion test

           7.2.1. A complete safety-belt assembly shall be positioned in a test chamber as prescribed in Annex 12 to this Regulation.  In the case of an assembly incorporating a retractor, the strap shall be unwound to full length less 300 + 3 mm.  Except for short interruptions that may be necessary, for example, to check and replenish the salt solution, the exposure test shall proceed continuously for a period of 50 hours.

           7.2.2. On completion of the exposure test the assembly shall be gently washed, or dipped in clean running water with a temperature not higher than 38 °C to remove any salt deposit that may have formed and then allowed to dry at room temperature for 24 hours before inspection in accordance with paragraph 6.2.1.2. above.

7.3. Micro‑slip test (see Annex 11, figure 3 to this Regulation)

           7.3.1. The samples to be submitted to the micro‑slip test shall be kept for a minimum of 24 hours in an atmosphere having a temperature of 20 + 5 °C and a relative humidity of 65 + 5 per cent.  The test shall be carried out at a temperature between 15 and 30 °C.

           7.3.2. It shall be ensured that the free section of the adjusting device points either up or down on the test bench, as in the vehicle.

           7.3.3. A 5 daN load shall be attached to the lower end of the section of strap.  The other end shall be subjected to a back and forth motion, the total amplitude being 300 + 20 mm (see figure).

           7.3.4. If there is a free end serving as reserve strap, it must in no way be fastened or clipped to the section under load.

           7.3.5. It shall be ensured that on the test bench the strap, in the slack position, descends in a concave curve from the adjusting device, as in the vehicle.  The 5 daN load applied on the test bench shall be guided vertically in such a way as to prevent the load swaying and the belt twisting.  The attachment shall be fixed to the 5 daN load as in the vehicle.

           7.3.6. Before the actual start of the test, a series of