Nuclear power engineering: Reactor type used at Tarapur Atomic Power Station (TAPS) Tarapur nuclear power station at Boisar, Maharashtra (India) — identify the type of reactor installed in the original units. Choose the correct option.

Concept
Tarapur Atomic Power Station Units 1 & 2 (the original units) are classic GE Boiling Water Reactors (BWRs). In BWRs, water boils directly in the reactor vessel to produce steam that drives the turbine.

Why other options are incorrect
Pressurized water reactors keep water under pressure so it does not boil in the core.Gas-cooled and liquid-metal cooled are different designs not used in the original TAPS units.

Final Answer
Boiling water