Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:1:p36
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 1 (pt 36/43)
Character Range: 241254–244489

4.2.2. of this annex, except that the test piece temperature is -18 °C ± 2 °C.

              4.3.3. Interpretation of results as in paragraph 4.2.3. of this annex.

              5. Test of resistance to the environment

              5.1. Test of resistance to simulated weathering

              5.1.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 6.4. shall apply. The total ultraviolet radiant exposure with the long arc xenon lamp shall be 500 MJ/m2. During irradiation the test pieces shall be exposed to water spray in continuous cycles. During a cycle of 120 minutes the test pieces are exposed to light without water spray for 102 minutes and to light with water spray for 18 minutes.

              5.1.1.1. Other methods giving equivalent results shall be allowed.

              5.1.2. Number of test pieces

               Three flat test pieces 130 mm x 40 mm cut from a flat sheet sample shall be subjected to testing.

              5.1.3. Interpretation of results

               The resistance to the simulated weathering test shall be considered to have given a satisfactory result if:

              5.1.3.1. The light transmittance measured in accordance with Annex 3, paragraph 9.1. does not fall below 95 per cent of the pre-weathering value. Additionally, for windows which are required for driver visibility the value shall not fall below 70 per cent.

              5.1.3.2. No bubbles or other visible decompositions, discolorations, milkiness or crazing shall occur during weathering.

              5.1.4. A set of test pieces or samples submitted for approval shall be considered satisfactory from the point of view of the resistance to simulated weathering if one of the following conditions is met:

              5.1.4.1. All test pieces have given a satisfactory result.

              5.1.4.2. One test piece having given an unsatisfactory result, a further series of tests carried out on a new set of test pieces or samples gives satisfactory results.

              6. Optical qualities

               The requirements of Annex 3, paragraph 9.1. shall apply for products which are requisite for driver visibility.

              6.1. Interpretation of results

               A set of samples shall be considered as satisfactory if one of the following conditions is met:

              6.1.1. All samples have given satisfactory results.

              6.1.2. One sample having given an unsatisfactory result, a further set of test pieces gives satisfactory results.

              7. Fire resistance test

              7.1. Indices of difficulty and test method

               The requirements of Annex 3, paragraph 10., shall apply.

              7.2. Interpretation of results

               The fire-resistance test shall be considered to have given a satisfactory result if the burning rate is less than 110 mm/min.

              7.2.1. For the purpose of approval a set of samples will be considered satisfactory if one of the following conditions is met:

              7.2.1.1. All samples give a satisfactory result.

              7.2.1.2. One sample having given an unsatisfactory result a second set of samples gives satisfactory