Document ID: chunk:federal_register_of_legislation:F2019C00042:front:0:p26
Version: federal_register_of_legislation:F2019C00042
Segment Type: other
Provision Reference: 
Character Range: 72139–75061

and not less than the minimum load specified for the item being tested. Difference between breaking strength of the two samples must not exceed 20 per cent of the highest measured breaking strength. For type 1 and type 2 procedures, the breaking strength test shall be carried out on strap samples only (para. 7.4.2.). For type 3 procedure, the breaking strength test shall be carried out on the strap in combination with the metal component involved (para. 7.5.).

         6.4.2.2. The parts of the belt assembly to be subjected to an abrasion procedure are given in the following table and the procedure types which may be appropriate for them are indicated by "x". A new sample shall be used for each procedure.

                         Procedure 1  Procedure 2  Procedure 3
Attachment               -            -            x
Guide or Pulley          -            x            -
Buckle-loop              -            x            x
Adjusting device         x            -            x
Parts sewn to the strap  -            -            x

         7. TESTS

         7.1. Use of samples submitted for approval of a type of belt or restraint system (see Annex 13 to this Regulation)

         7.1.1. Two belts or restraint systems are required for the buckle inspection, the low‑temperature buckle test, the low‑temperature test described in paragraph 7.5.4. below where necessary, the buckle durability test, the belt corrosion test, the retractor operating tests, the dynamic test and the buckle‑opening test after the dynamic test. One of these two samples shall be used for the inspection of the belt or restraint system.

         7.1.2. One belt or restraint system is required for the inspection of the buckle 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