Following a SCRAM, C.4-A actions have been completed and the SCRAM was reset. If the MSIVs are open, but the bypass valves failed closed, can you control pressure 900-1056# using Lo-Lo Set? Why or why not?
No. With the bypass valves closed, you need Lo-Lo Set. However, Lo-Lo Set needs a SCRAM signal. With the SCRAM reset, Lo-Lo Set is unavailable.