Percentages

RT film density limits of welds as compared to the IQI (range)

• -15 to +30%

• -30 to +30%

• -40 to +30%

• -45 to +30%

Mill Tolerance of Seamless Pipe

• -12.5%

• -11.5%

• -10.5%

• -7.5%

% of H2S in process causing pipe to be classified as Class 1 Pipe

• 1%

• 2%

• 2.5%

• 3%

% of welds to VT (visual) when fabricating Normal Service Pipe

• 5%

• 4%

• 3%

• 2%

% of welds to Brinnell after PWHT in furnace (only if BHN are required)

• 10%

• 5%

• 20%

• 15%

% of transducer diameter to overlap when doing a UT scan

• 10%

• 5%

• 15%

• 20%

% of welds to Brinnell after a local PWHT (only if BHN are required)

• 100%

• 110%

• 120%

• 130%

% of RT & Visual required when fabricating Severe Cyclic Pipe

• 100%

• 110%

• 120%

• 110%

Pneumatic test pressure, % of design pressure

• 110%

• 120%

• 130%

• 140%

Leak test pressure of underground pipe, % of operating pressure

• 110%

• 120%

• 130%

• 140%