UL 1384-2017 pdf download

UL 1384-2017 pdf download.ANSI/CAN/UL/ULC 1384:2017,Water-Based Automatic Extinguisher Units.
42.4 At least 1 inch of heptane is to be placed m the pan, ignited and bum freely for at least 120 s.
42.5 Following fire exposure, the flexible hose assemblies shall be subjected to representative Flow Distribution Tests. Section 32. and the Hydrostatic Pressure Test, Section 33.
43 Pneumatic Operation Test
43.1 A valve or other component intended to be pneumatically operated by a master valve or other pneumatic means shall operate as intended after being tested as specified in 43.2. A primary means of actuation that is intended to discharge multiple cylinder/valve assemblies shall result in the operation of all the connected cylinder/valve assemblies to occur within a 1 s maximum time interval between operation of the first cylinder/valve assembly and the last cylinder/valve assembly.
43.2 A master vaNe and cylinder or remote actuator are to be filled and pressurized to their operating pressure at 21°C (70°F) and then conditioned at their minimum operating temperature for at least 16 Ii. The maximum number of vaNes or other devices, and the maximum amount and size of tubing or piping intended to be operated by the master valve or remote actuator are then to be installed and pressunzed (when applicable) to the operating pressure that corresponds to the pressure
44 Pressure Relief Tests
44.1 The frangible disc 01 an automatic extinguisher unit shall comply with the requirements specified in 44.2 and 44.3. A pressure-relief device other than a frangible disc shall comply with the requirements
specified In 44.3.
44.2 Each of 30 frangible discs are to be subjected to a pressure that is increased at a rate of approximately 2.1 MPa (300 psig) per mm to a value of 85 percent of the rated bursting pressure, maintained at that pressure for at least 30 s, and then increased at a rate of no greater than 689 kPa (100 psig) per mm until the disc breaks. The mean bursting pressure of the discs plus two standard deviations shall not exceed the proof test pressure of the cylinder.
44.3 A pressure relief device shall prevent a cylinder and valve assembly from exploding when subjected to the fire exposure test specified Iii the Procedures for Fire Testing of DOT Cylinder Safety Relief Device Systems. CGA Pamphlet C-14. Three cylinder and valve assemblies, charged to their maximum intended operating pressure at 21°C (70°F), are to be tested.
Exception: The fire exposure test is not required to be conducted when the pressure relief device is constructed and sized to comply with the flow capacity requirements as specified by the formulae in the Safety Relief Device Standards Cylinders for Compressed Gases.
45 Elastomerlc Parts Test
45,1 An elastonieric part used to Provide a seal shall have the following properties when tested as specified in the Standard for Gaskets and Seals. UL 157:
a) For silicone rubber (having poly-organo-siloxane as its constituent characteristic), a minimum tensile strength of 3.4 MPa (500 psi) and a minimum ultimate elongation of 100 perceni
b) For fluoroelastomers, a minimum tensile strength of 6.9 MPa (1000 psi) and a minimum ultimate elongation of 150 percent.
C) For natural rubber and synthetic rubber other than silicone rubber or fluoroelastomers. a
minimum tensile strength of 8.3 MPa (1200 psi) and minimum ultimate elongation of 150
percent.
d) Those properties relating to maximum tensile set; minimum tensile strength and elongation after oven aging; and hardness after oven aging, all as specified In UL 157. The maximum service temperature used to determine the oven time and temperature for oven aging is 60°C
(140°F).
e) For parts continuously exposed to the extinguishing agent under pressure during intended service, after exposure to the extinguishing agent as specified in UL 157, a minimum tensile strength and minimum ultimate elongation of 60 percent of the original.
45.2 The Standard for Gaskets and Seals. UL 157, provides for testing to either finished elastomeric parts or sheet or slab material. Sheet or slab material is to be tested when the elastomeric parts are 0-rings having diameters of less than 30.4 mm (1 inch). The material tested is to be the same as that used in the product, regardless of whether finished elastomeric parts or sheet or slab material is tested.