Section 10 Requirements for valves
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Linkspans, July 2022 - Part 4 Engineering Systems - Chapter 4 Piping and Pressure Vessel Design Requirements - Section 10 Requirements for valves

Section 10 Requirements for valves

Parent topic: Chapter 4 Piping and Pressure Vessel Design Requirements

10.1 General

10.1.1 All valves are to be so constructed as to prevent the possibility of valve covers or glands being slackened back or loosened when the valves are operated.

10.1.2 All valves are to be arranged to shut with a right-hand (clockwise) motion of the wheels and are to be provided with indicators showing whether they are open or shut unless this is readily obvious.

10.1.3 Valves and cocks are to be fitted with legible nameplates and, except for submerged valves in ballast systems, are to be fitted in places where they are at all times readily accessible.

10.1.4 Shell valves are to be fitted in accessible positions and are to be capable of being operated from positions which are readily accessible in case of influx of water to the compartment.

10.1.5 Valve hand wheels and cock handles are to be suitably retained on the spindles.

10.1.6 Shell valves are to be hydraulically tested before installation in accordance with Pt 4, Ch 4, 12 Hydraulic tests on pipes and fittings.

10.1.7 All valves which are provided with remote control are to be arranged for local manual operation, independent of the remote operating mechanism.

10.1.8 Valves having isolation or sealing components sensitive to heat are not to be used in spaces where leakage or failure caused by fire could result in fire spread, flooding or the loss of an essential service.

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