What Is Often Overlooked During Orifice Flange Fabrication?

1.	What Is Often Overlooked During Orifice Flange Fabrication?
Answer» Inside surface of welded joints at @ orifice flanges shall be ground & machined smooth (JERES-L-350 Para 10.4.2). Orientation of taps is as per JERES-J-0001. All parallel pipe lines with adjacent orifice fittings shall have a MIN spacing of 300 mm (12 in) between flanges outside diameters if horizontal taps are required. Where this spacing is not PRACTICAL follow JERSEY-J-0001. Orifice flanges in adjacent lines shal be staggered so that no two pairs of orifice flanges are LESS than 1 m (3ft) APART. Orifice flanges in adjacent lines shal be staggered so that no two pairs of orifice flanges are less than 1 m (3ft) apart.

Answer»

Inside surface of welded joints at @ orifice flanges shall be ground & machined smooth (JERES-L-350 Para 10.4.2).
Orientation of taps is as per JERES-J-0001.
All parallel pipe lines with adjacent orifice fittings shall have a MIN spacing of 300 mm (12 in) between flanges outside diameters if horizontal taps are required. Where this spacing is not PRACTICAL follow JERSEY-J-0001.

Orifice flanges in adjacent lines shal be staggered so that no two pairs of orifice flanges are LESS than 1 m (3ft) APART.

Orifice flanges in adjacent lines shal be staggered so that no two pairs of orifice flanges are less than 1 m (3ft) apart.

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