UL 19:2013 pdf download.Lined Fire Hose and Hose Assemblies.
10.4,4 The length of the sample between linings is to be measured and recorded to the nearest inch (centimeter). The position of the sample with regard to twist is to be noted. From this point on, neither the sample nor the fittings are to be touched, moved, or interfered with in any way until all measurements and observations have been completed at the final test pressure.
10.4.5 Following measurement of the length at 10 pslg (69 kPa), the pressure in the sample is 10 be increased at a rate of 300— 1000 psag (2070— 6900 kPa) per minute unlil the required proof pressure is reached. While the pressure is being increased, the sample is to be examined for leakage and other defects. The proof pressure is to be maintained for at least 15 seconds, but not more than 1 minute. During the time the test pressure is maintained, the observations and measurements for elongation, twist, warp. arid rise are to be completed.
10.4.6 If the sample warps to any appreciable extent and particularly if the allowable limit of elongahon is approached, the length at proof pressure is to be measured by following the contour of the sample. Fo samples that do not warp to any extent, the measurement is to be taken parallel to the edge of the test surface. For this purpose, an edge of the table Is to be n’iarfced off in feet and inches (meters and centimeters). All measurements are to be taken to the nearest inch (centimeter) from the inside edges of the fittings. The elongation of the sample is to be calculated from the measurement taken at the proof pressure and the measurement taken at 10 psi (69 kPa).
10.4.5 Following measurement of the length at 10 pslg (69 kPa), the pressure in the sample is 10 be increased at a rate of 300— 1000 psag (2070— 6900 kPa) per minute unlil the required proof pressure is reached. While the pressure is being increased, the sample is to be examined for leakage and other defects. The proof pressure is to be maintained for at least 15 seconds, but not more than 1 minute. During the time the test pressure is maintained, the observations and measurements for elongation, twist, warp. arid rise are to be completed.
10.4.6 If the sample warps to any appreciable extent and particularly if the allowable limit of elongahon is approached, the length at proof pressure is to be measured by following the contour of the sample. Fo samples that do not warp to any extent, the measurement is to be taken parallel to the edge of the test surface. For this purpose, an edge of the table Is to be n’iarfced off in feet and inches (meters and centimeters). All measurements are to be taken to the nearest inch (centimeter) from the inside edges of the fittings. The elongation of the sample is to be calculated from the measurement taken at the proof pressure and the measurement taken at 10 psi (69 kPa).
