I. Flanges and Spacers
What is the mandatory condition for Brinell hardness in the RTJ groove concerning gaskets?
Explanation: The Brinell hardness for RTJ groove shall be at least 20 BHN more than that of the corresponding gasket.
II. Dimensions of Spades and Spacers
What standard is followed for the dimensions of Figure 8, Spades, and Spacers up to and including NPS 24?
Explanation: Dimensions of Figure 8, Spades, and Spacers up to and including NPS 24 shall be in accordance with ASME B16.48.
III. Thickness Calculation for Spades and Spacers
How should the thickness of spades and spacers over NPS 24 be calculated?
Explanation: Thickness of spades and spacers over NPS 24 shall be calculated in accordance with Para 304.5.3 of ASME B31.3, and calculations shall be submitted by the Vendor.
IV. Gasket Contact Surface Finish
What is the required surface finish for raised face and full-face flanges, Fig.8, Spades, and Spacers?
Explanation: Gasket contact surface finish for raised face and full-face flanges, Fig.8, Spades, and Spacers shall be in accordance with ASME B16.5 Para 6.4.5.3 and ASME B16.47 Para 6.1.4.2.
V. Surface Finish for Ring Type Joint Grooved Flanges
How should the gasket contact surface finish for Ring Type Joint grooved Flanges, Fig.8, Spades, and Spacers be finished?
Explanation: Gasket contact surface finish for Ring Type Joint grooved Flanges, Fig.8, Spades, and Spacers shall be finished in accordance with ASME B16.5 Para 6.4.5.2 and ASME B16.47 Para 6.1.4.1.
VI. Type of Ring Type Joint Grooved Fig.8, Spades, and Spacers
What type of Ring Type Joint grooved Fig.8, Spades, and Spacers is specified?
Explanation: Ring Type Joint grooved Fig.8, Spades, and Spacers shall be female grooved type.
VII. Flange Face Types
What determines the type of face for flanges, raised face, or ring joint face?
Explanation: All flanges ≤Class 600 shall be supplied as raised face, and class 900 and above shall be ring joint face unless otherwise stated.
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