Tech was out today to pressure test lines of pool at new house I have just purchased. He checked both lines empty with no water at 120 psi air pressure. The lines were both 2" pvc and they are fairly old. Both lines held no pressure. When I saw what pressure he was using I questioned him. He told me that he usually used a lower pressure and didn't know why it was set so high. Is there a chance he blew my pipes?