Assertion: containment | /r/HasProperty | fourth and final barrier
Facets:
value: to radioactive release
type: TRANSITIVE-OBJECT
Source sentences:
text: The containment is the fourth and final barrier to radioactive release (part of a nuclear reactor's defence in depth strategy), the first being the fuel ceramic itself, the second being the metal fuel cladding tubes, the third being the reactor vessel and coolant system.