# The Freight Containers (Safety Convention) Regulations (Northern Ireland) 2025, Paragraph 3: Interpretation

Extent: N.I.

In this Schedule—
“g” means the standard acceleration of gravity; g equals 9.8 m/s²;
“load” when used to describe a physical quantity to which units may be ascribed, signifies “mass”;
“Maximum permissible payload” means the difference between maximum operating gross mass or Rating and the mass of the empty container including permanently affixed ancillary equipment;
“P” means maximum permissible payload; and
“R” means “Rating” which has the same meaning as maximum operating gross mass.

---
Source: https://www.legislation.gov.uk/nisr/2025/90/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/freight-containers-safety-convention-regulations-northern-ireland-2025/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.