SAE AIR 1377B:2019 pdf free

SAE AIR 1377B:2019 pdf free.Fire Test Equipment for Flexible Hose and Tube Assemblies
The vibrating mechanism is shown in Fig. 5. One end of the hose assembly shall be subjected to a total axial or lateral displacement of not less than 1/16 in. (1.59 mm) on each side of neutral at 2000 cpm. The vibrated end of the hose tube assembly shall be subjected to the flame. The vibrating fixture shall be as light as possible to avoid excessive heat transfer or loss through the fixture.
The hood (see Fig. 5) is 25 in. (635 mm) wide and 25 in. (635 mm) high. The vibrated ftting connection is located 7 in. (178 mm) back of the open front of the hood. The rear end of the hood is ducted to a fan, which draws air through the hood opening at a velocity of 400 fpm (2.03 m/sec) as measured by an Alnor Velometer or equivalent, located at the hose assembly specimen. This air movement aids in keeping the flame horizontal and in exhausting fumes.
The temperature sensing system including the thermocouples and indicator shall have an allowable overall error of +1 % at 2000°F (1090°C). The flame temperature shall be measured 4 in. (101.6 mm) from the end of the burner barrel extension. A sufficient number of the thermocouples shall be used to assure that the specified temperature exists at least along the entire end fiting and the hose or tube for a distance of not less than 5 in. (127 mm) of hose plus the fiting.
The oil circulating and heat equipment consists of an electrically driven oil pump and an oil tank with a thermostatically controlled immersion heater. The plumbing of the oil system also includes pressure relief valves, flow indicators, pressure gages, and control and selector valves.
The ilustration of the apparatus (Fig. 6) shows the layout of the complete assembly. A5 ft(1.52 m) constant head of water above the heat transfer tube and a 2 ft (.62 m) drop to the end of the tailpipe are specified so as to obtain consistent flow conditions. A standard 1/4 in. (6.35 mm) metering valve is attached just before the tailpipe for adjustment of the water flow rate. A gallon measuring container or a container and a weighing scale are also required.SAE AIR 1377B pdf free download.