noannoyances doesn't include detpacks and pipes?

[ddm999]

function noannoyances:onexplode( explode_entity ) return EVENT_DISALLOWED end

Put this at the top of your lua script.

By default, it's set to check whether it's a grenade exploding, disallow if it is, but allow if it isn't.

This will make any noannoyances in your map remove all explosions (detpacks, pipes - maybe RPG rockets as well, however).