Regulation 21 Re-rating
This regulation applies to the re-rating of a transportable gas container, that is the reassessment of its capability to contain compressed gas safely with a view to improving its capacity by means of an increase in the charging pressure (or in the case of liquefied gas, the filling ratio) from that originally assessed and marked on the container at the time of manufacture.
An employer shall ensure that no person employed by him re-rates a transportable gas container at work unless he is competent to do so and does it in accordance with suitable written procedures drawn up by the owner of the container.
No person shall supply a transportable gas container which has been re-rated unless following the re-rating a person or body of persons approved by the Executive for the purposes of regulation 16(2)(a)(i) has certified it as being safe for use.
In this regulation “filling ratio” means the ratio of the volume of liquefied gas in the container to the total volume of the container.