Wormald—200 bar Inergen gas cylinders

PRA No.

2007/9367

Date published

3 Jul 2007

Product description

The affected cylinders are "Worthington" 80 litre cylinders.
They are readily identified as they are approximately 90mm shorter than the 200 Inergen cylinders previously supplied. They also have a unique cylinder number stamped on the cylinder neck in 10mm high number just below the tranport cap.
The cylinders were filled between 1 May 2006 and 13 July 2006.

Identifying features

Cylinder Numbers:
ALA-TY 06690 - ALA-TY 06737
ALA-TY 06770 - ALA-TY 06785
ALA-TY 06883 - ALA-TY 06898
ALA-TY 06946 - ALA-TY 6961
ALA-TY 06978 - ALA-TY 07041
ALA-TY 07122 - ALA-TY 07137
ALA-TY 07362 - ALA-TY 07393
ALA-TY 07427 - ALA-TY 07473
ALA-TY 07522 - ALA-TY 07537
ALA-TY 07554 - ALA-TY 07569
ALA-TY 07586 - ALA-TY 07617

What are the defects?

During filling of new 200 bar cylinders, several crates of cylinders were inadvertently contaminated prior to filling as water was permitted to enter the cylinder through an open fill adaptor fitted to the Inergen CV98 valve.
The water in the cylinder could, after several months, corrode the Safety Burst Disc on the valve giving rise to the potential for premature rupture of the disk at normal ambient temperatures.