Watts Bar Nuclear Plant - Engineering Assignment Help

Assignment Task

The plant site, consisting of approximately 1,770 acres, is located in southeastern Tennessee on the west shore of Chickamauga Lake, about 50 miles northeast of Chattanooga and 31 miles northeast of Sequoyah Nuclear Plant site. The NSSS (Nuclear Stam Supply System) consists of a reactor and four closed reactor coolant loops connected parallel to the reactor vessel. Each loop contains a reactor coolant pump, a steam generator, loop piping, and instrumentation. The NSSS also includes an electrically heated pressurizer and specific auxiliary systems. High-pressure water circulates through the reactor core to remove the heat generated by the nuclear chain reaction. The heated water exits the reactor vessel and passes via the coolant loop piping to the steam generators. Here it gives its heat to the feedwater to generate steam for the turbine generator. The cycle is completed when the water is pumped back to the reactor vessel. The inherent design of the pressurized water, closed-cycle reactor minimizes the quantities of fission products released to the atmosphere. Three barriers exist between fission product accumulation and the environment. These are the fuel cladding, the reactor vessel and coolant loops, and the reactor containment. The consequences of a breach of the fuel cladding are significantly reduced by the ability of the uranium dioxide lattice to retain fission products. Escape of fission products through fuel cladding defects would be contained within the pressure vessel, loops, and auxiliary systems. Breach of these systems or equipment would release the fission products to the reactor containment, where they would be retained.

The reactor containment is designed to adequately retain these fission products under the most severe accident conditions. NSSS power level is 3,425 MW which includes 14 MW from the reactor coolant pumps. Operation at the core design rating of 3,411 MW. With its related control and protection system, the reactor core is designed to function throughout its design lifetime without exceeding the acceptable fuel damage limits.

With the process and residual heat removal systems, the core design provides for this capability under expected conditions of normal operations with appropriate margins for uncertainties and anticipated transient situations. The reactor coolant pumps are Westinghouse vertical, single-stage, mixed flow pumps of the shaft-seal type. The power supply system to the pumps is designed so that adequate coolant flow is maintained to cool the reactor core under credible circumstances. Reactor protection is achieved by defining a region of reactor power and coolant conditions allowed by the principal tripping functions. Additional tripping functions such as a high-pressurizer pressure trip, low-pressurizer pressure trip, high-pressurizer water-level trip, low reactor coolant flow trip, reactor coolant pump under-voltage and frequency trips, steam generator low-low water-level trip, turbine trip, safety injection trip, nuclear source and intermediate-range trips, neutron flux rate trips, and manual trip are provided to support the principal tripping functions for specific accident conditions and mechanical failures. The fuel handling system is divided into two areas; the reactor cavity, flooded for refueling, and the Auxiliary Building, external to the reactor containment and is always accessible to plant personnel. The two areas are connected by the fuel transfer system, which carries the fuel through an opening in the reactor containment.

The fuel handling equipment is designed to handle the new and spent fuel from the time it enters the site. The waste processing systems, including both liquid and gas, are designed to ensure that the quantities of radioactive releases from the entire plant to the surrounding environment will not exceed the 10 CFR 20 limits and are as low as reasonably achievable. The system is designed to convert the heat produced in the reactor to electrical energy by converting a portion of the point. The internal environments of the various buildings of the plant are controlled within acceptable limits for safety, comfort, and equipment protection by several heating, cooling, and ventilating systems. Filtration is provided in exhaust systems as required to reduce contaminants.

This Engineering Assignment has been solved by our Engineering experts at My Uni Paper. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing style.
Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turnitin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.