UL 194:2016 pdf free download – STANDARD FOR SAFETY Gasketed Joints for Ductile-lron Pipe and Fittings for Fire Protection Service.
10 Pipe Damage Test
10.1 Joints having a self-restraining feature and incorporating 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 Cl 51/A21 .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/A21 .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 Cli 1/A21 .11. Setscrews or other type of restraining components of such connections shall be tightened to the minimum torque specified 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 properties of the pipe used in these tests is to be in accordance with the Standard for Ductile-Iron Pipe, Centrifugally Cast, AWWA C151/A21.51. The samples are to be assembled in accordance with the manufacturer’s installation instructions, which shall specify the required torque applied to bolts and 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 largest clearance is permitted.
11.1.4 Tests are to be conducted with some samples deflected to the angle specified as a maximum by the manufacturer. The joint deflection is to be maintained to at least the maximum angle during pressurization.
11.1.5 After the pipe is tilled 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 joints. 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.