National Board’s position on “intervening stop valves” in Relief systems
In 2017, the NBIC was restructured into four (4) parts, adding a new Part 4, Pressure Relief Devices. This purpose of this restructuring was to provide one distinct integrated part for pressure relief devices compiled from all PRD information referenced in Part 1, Installation; Part 2, Inspection; and Part 3, Repairs and Alterations. And in […]
