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A200: Continuous sources of release [Table of Contents] A400: Secondary sources of release

DNV-OS-A101 Safety Principles and Arrangements

[-] App.A: Categorisation of Sources of Release
[-] A: Categorisation
[-] A300: Primary sources of release

App.A
A 300   Primary sources of release

App.A A
301   Typical primary sources of release:
—instrument and process vent pipes
—relief valves outlets
—pig receivers or launchers
—pump and compressor seals (depending on design)
—packed gland or seal of control valve
—sample points
—regularly used process drains (to open drain tundish)
—flexible pipes and hoses (depending on materials and design)
—ventilation openings from a Zone 1 area
—active mud in open gutters before final degassing
—shale shaker
—vent from drilling mud degasser system.
A200: Continuous sources of release [Table of Contents] A400: Secondary sources of release