how to control SCR connected back to back using MOC triac ic?

i want to make ac voltage controller using two high power SCR connected in back to back.

using pulse transformer to trigger SCR it works fine.

but how can we control using MOC3052 OPTO TRIAC IC circuit diagram ?

LOAD is highly inductive like induction heating transformer.

below circuit works for some times then MOC ic get damage so SCR firing without giving gate pulse.