UL 15027-3:2020 free download

UL 15027-3:2020 free download STANDARD FOR SAFETY Immersion Suits – Part 3: Test Methods (ISO 15027-3:2012)
3.3.6 Pass/fail criteria All samples shall pass all objective tests for the entire device to meet the requirements of ISO 15027- 1:2012 or ISO 15027-2:2012. However, due to the high variability between human test subjects and the difficulty in assessing some subjective measures, it is permitted that a device does not completely meet the requirements of the following subjective tests 1 in a single sample and in no more than one human test subject. In these circumstances, two other human test subjects within the same weight category and with the same gender, wearing the same size of suit should be subjected to the same test and before the same test panel as at 3.10.3. If this additional test is still not clearly passed as required in ISO 15027-1:2012 or ISO 15027-2:2012, then the device shall be deemed to have failed, whilst if it is clearly passed by the additional two subjects, the test panel may deem that the device has passed the test overall.
3.4 Fuel resistance test Place three samples each of all exterior fabrics, typical seams, apertures and components in a suitable container and submerge them under a 100 mm head of diesel according to EN 590 at a temperature of (20 ± 2) °C for 24 h. After removal from the container, remove the surface oil by wiping. Subject the samples to a hydrostatic test according to ISO 811 with a speed of 10 cm/min until 1 000 mm water head and then carry out a tensile seam strength test according to ISO 13935-2.
3.4DV D2 Modification ofClause 3.4 byreplacing with Clause 3.4DV.1 to 3.4DV.1.3:
3.4DV.1 Oil resistance test
3.4DV.1.1 Sampling
One suit or suit system shall be subjected to the oil resistance test.
3.4DV.1.2 Procedure
A suit shall be immersed under a (100 ± 10) mm head of diesel oil for 24 hours at room temperature. Before immersion, all apertures shall be sealed.
At the conclusion of the 24 hours, any surface oil should be wiped off and the suit shall be turned inside out. The suit shall then be placed on surface that is suitable for collecting and draining of water. The suit shall then be filled water to the neck level which shall be (300 ± 20) mm above the surface. The suit shall be left in this position for 1 h. At the conclusion of the test, the leakage of any water from the suit shall be measured and recorded.
3.4DV.1.3 Results
At the conclusion of the test, the leakage of any water from the suit shall be measured and recorded.