Simple Pressure Vessels (Safety) Regulations SI 1991/2749
Schedule 4
Updated: 04/11/2009
Schedule 4 of the Simple Pressure Vessels (Safety) Regulations SI 1991/2749 covers families of vessels.
Vessels form part of the same family if they differ from the prototype only:
- in diameter (provided always that they meet the requirements as to wall thickness);
- in the length of the cylindrical component, provided that
