MT 3 - TC 81/MT 3

Provides methods for the evaluation of the effectiveness of shielding measures against LEMP for structures with information equipment such as electronic systems in case of direct and nearby lightning strikes. In addition it provides rules for bonding measures inside structures and for earthing methods relating to LEMP.

Gives guidelines for protection of information technology equipment (ITE) against lightning magnetic impulse (LEMP) effects in existing structures and includes methods suitable for new structures. A checklist helps to address specific points and to select the most economical measures for the hardening of equipment against LEMP. The checklist facilitates risk analysis and selection of the most suitable counter measures.

Gives information for the design, installation, inspection, maintenance and testing of an effective lighning protection system for information systems in or on a structure.