DNV DNV-RU-SHIPS PART 4 CHAPTER 7 PDF

Application

Pressure equipment according to these rules are components subject to gaseous or liquid fluids with a design pressure above 0.5 bar. Pressure equipment may consist of more than one pressurized compartment.

The term pressure equipment in this section applies to the following components:

— pressure vessels necessary for performing the main functions listed in Pt.1 Ch.1 Sec.1 [1.2]

— other pressure vessels containing:

— harmful fluids (toxic or corrosive)

— fluids with flash point below 100°C

— fluids with temperature above 220°C

— fluids with pressure above 40 bar

— compressed gases where

p_d × V ≥1500 bar ltr

— boilers and hot water generators, including equipment, valves and fittings

— thermal-oil heaters, including equipment, valves and fittings

— oil or gas burners and oil or gas firing equipment.

p_d = design pressure

V = volume.

Pressure equipment according to [1.1.2] are subject to certification by the Society.

The control and monitoring systems shall be certified according to Ch.9 for the following:

— electrically heated pressure vessels

— boilers

— thermal-oil heaters

— hot and warm water generators

— oil or gas burners and oil or gas firing equipment.