Actually, I didn't know you could shoot the pipes in the tunnel. Never thought to try, somehow. I just went in, and with some fancy flying, avoided the pipes.
Most of them can be avoided, and if you really have a bad crash, you can wait for yuor shields to recharge in the large room where the workers are setting up a Turbolaser.
If anyone is bored, he can give it a try. I flew that mission over 20 times before I could pull it off without shooting.