GERT8000-HB8 Iss 8

A new requirement has been introduced at section 2.4 to allow a lock-out device to be used as a means of additional protection. 

A new requirement has been added at section 2.6 to permit the use of a remotely-activated T-COD as a means of additional protection. 

As a result of the introduction of new sections 2.4 and 2.6, cross references in section 2.2 have been revised and sections 2.4 to 2.7 in issue 7 have been renumbered in issue 8.  

A full description of what is meant by detonator protection for a line blockage has been included at section 2.8 (previously section 2.6). 

Section 5.1 has been amended to make it clear that a T-COD must be removed before a line blockage is given up, and to refer to the use of remotely-activated T-CODs.