Vehicle environment test. Resistance to degradation by exposure to automotive fluids is determined by the following test.
(a) The inlet and outlet connections of the valve unit are connected or capped in accordance with the manufacturers installation instructions. The external surfaces of the valve unit are exposed for 24 hours at 20 (±5) °C to each of the following fluids:
(i) Sulphuric acid -19 per cent solution by volume in water;
(ii) Sodium hydroxide -25 per cent solution by weight in water;
(iii) Ammonium nitrate -28 per cent by weight in water; and
(iv) Windshield washer fluid (50 per cent by volume methyl alcohol and water). The fluids are replenished as needed to ensure complete exposure for the duration of the test. A distinct test is performed with each of the fluids. One component may be used for exposure to all of the fluids in sequence.
(b) After exposure to each chemical, the component is wiped off and rinsed with water;
(c) The component shall not show signs of physical degradation that could impair the function of the component, specifically: cracking, softening, or swelling. Cosmetic changes such as pitting or staining are not failures. At the conclusion of all exposures, the unit(s) shall comply with the requirements of the ambient temperature leakage test (Annex 4, paragraph 2.2.) and Hydrostatic Strength Test (Annex 4, paragraph 2.1.).
Vehicle environment test. Resistance to degradation by external exposure to automotive fluids is determined by the following test:
(a) The inlet and outlet connections of the TPRD are connected or capped in accordance with the manufacturers installation instructions. The external surfaces of the TPRD are exposed for 24 hours at ambient temperature to each of the following fluids:
(i) Sulphuric acid (19 per cent solution by volume in water);
(ii) Ethanol/gasoline – 10 per cent/90 per cent concentration of E10 fuel; and
(iii) Windshield washer fluid (50 per cent by volume methyl alcohol and water). The fluids are replenished as needed to ensure complete exposure for the duration of the test. A distinct test is performed with each of the fluids. One TPRD shall be used for exposure to all of the fluids in sequence.
(b) After exposure to each fluid, the TPRD is wiped off and rinsed with water;
(c) The TPRD shall not show signs of physical degradation that could impair the function of the TPRD, specifically: cracking, softening, or swelling. Cosmetic changes such as pitting or staining are not failures. At the conclusion of all exposures, the TPRD shall comply with the requirements of the leak test (Annex 4, paragraph 1.8.), bench top activation test (Annex 4, paragraph 1.9.) and flow rate test (Annex 4, paragraph 1.10.).
Vehicle environment test. Resistance to degradation by exposure to automotive fluids is determined by the following test.
(a) The inlet and outlet connections of the valve unit are connected or capped in accordance with the manufacturers installation instructions. The external surfaces of the valve unit are exposed for at least 24 hours at ambient temperature to each of the following fluids:
(i) Sulphuric acid -19 per cent solution by volume in water;
(ii) Ethanol/gasoline – 10 per cent/90 per cent concentration of E10 fuel; and
(iii) Windshield washer fluid (50 per cent by volume methyl alcohol and water). The fluids are replenished as needed to ensure complete exposure for the duration of the test. A distinct test is performed with each of the fluids. One component may be used for exposure to all of the fluids in sequence.
(b) After exposure to each chemical, the component is wiped off and rinsed with water;
(c) The component shall not show signs of physical degradation that could impair the function of the component, specifically: cracking, softening, or swelling. Cosmetic changes such as pitting or staining are not failures. At the conclusion of all exposures, the unit(s) shall comply with the requirements of the leak test (Annex 4, paragraph 2.2.) and hydrostatic strength test (Annex 4, paragraph 2.1.).
