U.S. lists 17 nuclear reactors with parts from forge under probe

[NutmegYankee]

8. If the steam generator wall failed, they would shut down the reactor and add borated water.

The cool borated water, plus other neutron poisons (elements that absorb neutrons due to a large cross section thereby stopping fission) would stop the reactor from fissioning and then the decay heat removal system heat exchanger will be used to reduce the reactor core temperature until it's in cold shutdown. Any steam from a PWR steam generator (secondary loop) is not in direct contact with the core and could be vented without much radiation concern.