DNV DNV-RU-INV PART 4 CHAPTER 3 PDF

The following requirements apply to pressure vessels for the operation of the main propulsion plant and its auxiliary machinery. They also apply to pressure vessels and equipment necessary for the operation of the inland waterway vessel and to independent cargo tanks if these are subjected to internal or external pressure in service.

Cargo tanks and containers with design temperatures of < 0°C are subject to Pt.6 Ch.1 Sec.3.

These requirements do not apply to pressure vessels with permitted working pressures of up to 1.0 bar and with a total capacity, without deducting the volume of internal fittings, of not more than 1000 litres, nor to pressure vessels with working pressures of > 1 bar where the product of pressure [bar] times capacity [litres] is ≤ 200.

Manufacture and inspection of these pressure vessels are subject to the engineering practice.

Pressure vessels manufactured to recognized standards can be accepted if they have been subjected in the manufacturer’s works to tests conforming to the standard.