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Pipe joints, including welds, shall be left exposed for examination during the test.
Exception: Covered or concealed pipe end joints that have been previously tested in accordance with this code.
G2417.3.1 (406.3.1) Expansion Joints
Expansion joints shall be provided with temporary restraints, if required, for the additional thrust load under test.
G2417.3.2 (406.3.2) Appliance and Equipment Isolation
Appliances and equipment that are not to be included in the test shall be either disconnected from the piping or isolated by blanks, blind flanges or caps.
G2417.3.3 (406.3.3) Appliance and Equipment Disconnection
Where the piping system is connected to appliances or equipment designed for operating pressures of less than the test pressure, such appliances or equipment shall be isolated from the piping system by disconnecting them and capping the outlet(s).
G2417.3.4 (406.3.4) Valve Isolation
Where the piping system is connected to appliances or equipment designed for operating pressures equal to or greater than the test pressure, such appliances or equipment shall be isolated from the piping system by closing the individual appliance or equipment shutoff valve(s).
G2417.3.5 (406.3.5) Testing Precautions
Testing of piping systems shall be performed in a manner that protects the safety of employees and the public during the test.

Related Code Sections

G2417.3 Fuel Gas, (406.3) Test Preparation
Pipe joints, including welds, shall be left exposed for examination during the test. Exception: Covered or concealed pipe end joints that have ...
G2417.3 Fuel Gas, (406.3) Test Preparation
Pipe joints, including welds, shall be left exposed for examination during the test. Exception: Covered or concealed pipe end joints that have been ...
G2417.3.2 Fuel Gas, (406.3.2) Appliance and Equipment Isolation
Appliances and equipment that are not to be included in the test shall be either disconnected from the piping or isolated by blanks, blind flanges ...