Greetings,
I am running Long Arm of the Hutt this weekend, and a bunch of my players stocked up on grenades, so I know this will come up. On page 155 of the core rule book, it describes the blast quality as,
..If the attack is successful and Blast activates, each character(friend or foe) Engaged with the original target suffers wounds equal to the weapon's Blast rating(plus additional wounds per success).
If the Blast quality doesn't activate, the ordnance still detonates...the explosion may not catch anyone else in the radius. However, the user may still trigger Blast by spending (3 advantage). In this case the original target and every target engaged with the original target suffers damage equal to the Blast rating on the weapon.
So my question is... how does Blast activate normally? Is it triggered on a successful attack(hit)? Because the second part seems to suggest you can still hit the original target but not cause Blast(AoE) damage to additional targets.