Nuclear Research Ship: Japanese Learn Nuclear Techniques at Sea
…reactor power and steam flow change quickly but in small increments. In a following sea, reactor power variations of 5 percent or more are common with a constant propeller rotation rate. The changes that occur in a following sea are due to the effects of surfing and climbing waves. The reactor also has an automatic system to adjust control rods to keep the average coolant temperature in a narrow control band of 273 +/-1.2 C. (523 +/- 2.2 F). The…