SAE J1942:2019 pdf free

SAE J1942:2019 pdf free.Hose and Hose Assemblies for Marine Applications
The test described in 8.2 is becoming the preferred method for qualifying hose assemblies. Manufacturers qualifying hoses to this specification may do so using either test method. Hose assemblies currently listed in SAE J1942-1 were qualified using the existing 2.5 Minute Fire Test (8.1). These hoses will now be identified as SAE J1942 Type“A” hoses.
For hoses 51 mm inside diameter and smaller, three assemblies are to be consecutively tested for fire resistance. For hoses larger than 51 mm inside diameter, one hose assembly shall be tested. Free hose length measured between the fttings shall be 400 to 600 mm. At least one end ftting shall be positioned to be engulfed in the flame. The hose shall be positioned 230 mm above the top edge of an open pan the size of 215 x 355 x 13 mm. Sufficient heptane or other equivalent fuel shall be added to the pan to provide for a 2.5 minute burn.
Thermocouples shall be mounted so as to sense the flame temperature in the same plane and elevation as the hose assembly. The assembly shall be pressurized with water to the maximum working pressure and maintained during the burning portion of the test. Following ignition of the fuel, timing shall begin and the temperature shall be monitored. The temperature shall reach a minimum of 650 °C, but shall not exceed 730°C. (If 650 °C is not reached, the test must be repeated with a new sample. If 730 °C is exceeded, results may be discarded and the test repeated.)
At the end of the 2.5 minutes of fire exposure, the flame shall be extinguished and pressure relieved. Water from a source located 91 5 mm above the specimen shall flow through the assembly. Failure to achieve free flow shall constitute failure. With free flow established, the assembly shall be pressurized to the maximum working pressure for 30 seconds. Leakage during the fire exposure or subsequent pressure test constitutes a failure. See Figures 1 and 2 for Fire Test set-up and test chamber,
NOTE: Hose assemblies may use protective fire sleeves.SAE J1942 pdf free download.