Nuclear marine propulsion is propulsion of a ship or submarine with heat provided by a nuclear power plant. The power plant heats water, to produce steam and it is this steam that powers the steam turbines and turbo generators. The power is then transferred to a gearbox that reduces the ratio by around 50 to 1 and this powers the propulsor. Naval nuclear propulsion is propulsion that specifically refers to naval warships (see Nuclear navy). Very few experimental civil nuclear ships have been built.
Basic operation of naval ship or submarine
The ship or submarine will be fitted with one nuclear power plant. The plant has two sides port and starboard. These sides provide a safety net should one side be affected by an accident or incident of some kind like for example a fire. The plant uses water to transfer heat generated by the power plant to the steam generators [basically large kettles the heating element uses heat provided by the primary circuit from the power plant]. This heat is around 250 to 300 degrees Celsius. Water will turn to steam at 100 degrees C so the system is pressurised to prevent this from happening. To transfer the heated water there are 2 sets of pumps on each side.
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Preliminary reports of the South Korean ship’s displacement vary from 30,000-40,000 tonnes ... “Port visibility capability was a big factor in the British design, as a big argument for a conventional-powered ship is that a nuclear-powered ship can’t go to many places,” he said, listing as regional examples Japan, New Zealand and Australia.
When I was a kid, the nuclear age had just begun. Nuclear-powered ships were being developed, as was nuclear-power electricity generation, and of course there was the school air raid drills that had us diving under our desks for protection ...Today’s nuclear power generating facilities are far different from those first constructed in the 1960s.
Because of its longstanding nuclear-free policy, New Zealand was recently left out of a new security alliance between the U.S., Britain and Australia ...Udall said he doesn't think New Zealand's stance, which includes a ban on nuclear-powered ships entering its ports, will impede a strengthening of defense ties with the U.S.
China’s nuclear and military buildup raises the risk of conflict in Asia...China versus the United States, each pouring hundreds of billions of dollars into missiles, submarines, warplanes and ships, vying to dominate the Indo-Pacific. Now that race may be going nuclear.
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There also is an urgent need to maintain aging ships, such as the nuclear-powered Nimitz, and fully staff them with trained officers and enlisted personnel ... That year, the Navy had four serious accidents, including two collisions at sea resulting in the deaths of 17 sailors and hundreds of millions of dollars in damage to ships.