Simple pressure vessels

Manufacturers of compressed air cylinders for breathing air shall perform hydrostatic pressure tests of the compressed air cylinders. The month and year of the hydrostatic pressure test shall be marked on the compressed air cylinder. (§ 5-1) 

Disclaimer

The body of Norwegian legislation is constantly evolving. However, we  cannot guarantee that technical rules is updated at all times. Therefore it is the responsibility of the economic operators to ensure conformity with all relevant legislation.

Reference to... 

• Regulations No 1359 of December 6 2011 concerning the construction, design and production of work equipment and chemicals (the Producer Responsibility Regulations) Chapter 5
• Unofficial translation of the Norwegian version of the Regulation Legal authenticity remains with the Norwegian version as published in Norsk Lovtidend. In the event of any inconsistency, the Norwegian version shall prevail.