Section 18(3)(iii) in The Static And Mobile Pressure Vessels (Unfired) Rules, 1981

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Union of India - Subsection

Section 18(3)(iii) in The Static And Mobile Pressure Vessels (Unfired) Rules, 1981

(iii)where the emergency shut-off valve is of the excess flow type, its closing rate of flow shall be below the rate which is likely to result from a fracture of the line it is protecting, calculated under the most adverse weather conditions likely to be experienced. Excess-flow valves shall have a rated flow capacity sufficiently above normal flow requirements to prevent valve chatter.

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Union of India - Subsection

Section 18(3)(iii) in The Static And Mobile Pressure Vessels (Unfired) Rules, 1981