Just started on site on option A contract, client has specified a material that now has a long lead time due to manufacturers being bought out. Is this a compensation event? Lead time at tender was 2 weeks, lead time now is 10 weeks.
The only one it could possibly fall under is clause 60.1 (19) and this assumes that, as well as satisfying the last 3 bullets, it stops you achieving the Completion Date. I.e. the delay is so significant that it uses up all your terminal float and time risk allowance.
Good luck !!!