Can you tell me the solution on this map?

[BIr4]

MAP: EXU2-BI08-FrostclawOutpost

It's an EXU2 map in a water treatment base and I put 3 double rockets that came out of the ground and 3 queen spiders appeared. but I don't know how to activate the emergency elevator. I took a break there, if you know how the reactor explodes let me know. Tried shooting the pipes but they won't break.

[UTNerd24]

It takes a certain power of explosions to break the pipes. When in doubt, just spam secondary/thrown flares everywhere. Be sure to run first though.

[BIr4]

It takes a certain power of explosions to break the pipes. When in doubt, just spam secondary/thrown flares everywhere. Be sure to run first though.

It worked, I used several shots with the hyperflakker, I needed a few shots. I had thought that one would be enough. But after another try and persistence it worked. (like 6 shots with the gun)