UL 194-2016 pdf download
UL 194-2016 pdf download.Gasketed Joints for Ductile-Iron Pipe and Fittings for Fire Protection Service.
10 Pipe Damage Test
10.1 Joints having a sell-restraining feature and incorpcrating setscrews or other restraining components
that are capable of adversely affecting the integrity of ductile-iron pipe shall not result in pipe puncture,
pipe cracking or chipping, spalling. or removal of the pipe lining when tested in accordance with 10.2 and
10.3.
10.2 For this test, the portion of the pipe samples contacted by the setscrews or other restraining components shall:
a) Represent the minimum thickness class specified in the manufacturer’s instructions: and
b) Represent the minimum wall thickness as allowed by the tolerances described in the Standard for Ductile-Iron Pipe. Centrifugally Cast, AWWA C1511A21 .51.
Samples representative of size range, and maximum torque values specified in the manufacturer’s installation instructions shall be tested. Machining of the outside surface of the pipe samples to obtain the minimum specified wall thicknesses is permitted when the outside diameter remains within the tolerance as specified in AWWA Cl 51 1A21 .51, Machining of the inside surface is permitted when performed prior to the cement lining being applied.
10.3 The restraining device is to be assembled onto the pipe samples in accordance with the manufacturer’s instructions with the setscrews or other restraining feature tightened to the maximum torque specified in the instructions. After complete assembly, the joint is then to be disassembled and the pipe visually examined for compliance with the requirements specified in 10.1.
11 Leakage Test
11.1 Joints with self-restraining feature
11.1.1 Joints having a self-restraining feature shall not separate or leak when subjected to a hydrostatic pressure of two times the rated pressure. Bolts used for mechanical joint retainer glands shall be tightened to the torque and by the method specified in the Standard for Rubber•Gasket Joints for Ductile-Iron and Pressure Pipe and Fittings, AWWA Clii ‘A21 .11. Setscrews or other type of restraining components of such connections shall be tightened to the minimum torque specihed by the manufacturer’s installation instructions. After the initial bolt and setscrew torques have been made, no further torque adjustments are to be made.
11.1.2 The mechanical pi’operties of the pipe used in these tests is to be in accordance with the Standard for Ductile-Iron Pipe. Centrifugally Cast. AWWA CI 511A21 .51. The samples are to be assembled in accordance with the manufacturer’s installation instructions, which shall specify the required torque applied to bolts arid setscrews. No external restraint is to be provided.
11.1,3 The joints used in these tests are to incorporate the minimum pipe thickness class, and be representative of the largest clearance permitted by the manufacturer’s tolerances. Machining of the restraining devices to achieve the lar9est clearance is permitted.
11.1.4 Tests are to be conducted with some samples deflected to the angle specitied as a maximum by the manufacturer. The jornt deflection is to be maintained to at least the maximum angle during pressurization.
11.1.5 After the ppe is filled with water, in a manner to exclude air, the water pressure is to be increased in 50 psi (344 kPa) increments until two times the rated working pressure is attained. After each increase in pressure, observations are to be made of the stability of the points. These observations are to include such items as measurements of joint distortion, protrusion or extrusion of the gasket material, or other factors affecting the continued use of the pipe in service. During the test. the pressure is not to be increased by the next increment until the joint has become stable. This applies particularly to movement of the gasket.
11.1.6 After the pressure has been increased to twice the rated pressure, the pressure is to be decreased to 0 psi (0 kPa) while observations are made tot leakage. The pressure Is again to be slowty increased to two times the rated pressure while observations are made for leakage Each time an observation is made for leakage. the joint, and in particular the gasket, is to reach equilibrium before an examination is made. The test pressure is to be held at two times the rated pressure for a minimum of 1 minute.
11.2 Joints without self-restraining type joint
11.2.1 Joints without a sell-restraining feature shall not leak when subjected to a hydrostatic pressure of two times the rated pressure.
