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Chapter 4: Problem 21

The initial causes of serious accidents at nuclear power plants have not so far been flaws in the advanced-technology portion of the plants. Rather, the initial causes have been attributed to human error, as when a worker at the Browns Mills reactor in the United States dropped a candle and started a fire, or to flaws in the plumbing, exemplified in a recent incident in Japan. Such everyday events cannot be thought unlikely to occur over the long run. Which one of the following is most strongly supported by the statements above? (A) Now that nuclear power generation has become a part of everyday life, an ever-increasing yearly incidence of serious accidents at the plants can be expected. (B) If nuclear power plants continue in operation, a serious accident at such a plant is not improbable. (C) The likelihood of human error at the operating consoles of nuclear power generators cannot be lessened by thoughtful design of dials. switches, and displays. (D) The design of nuclear power plants attempts to compensate for possible failures of the materials used in their construction. (E) No serious accident will be caused in the future by some flaw in the advanced-technology portion of a nuclear power plant.

Short Answer

Expert verified
(B) If nuclear power plants continue in operation, a serious accident at such a plant is not improbable.

Step by step solution

01

Understand the Premise

The passage states that the initial causes of serious accidents in nuclear power plants have been due to human error or plumbing issues, not flaws in advanced technology. These causes are considered likely over a long period.
02

Analyze the Conclusion Options

Evaluate each answer choice to see if it aligns with the premise: (A) suggests increasing accidents, which isn't directly supported; (B) states a serious accident is not improbable, matching the premise of likely causes; (C) discusses human error reduction by design, not directly addressed in the premise; (D) touches on design compensating for material failures, which isn't the main focus; (E) claims no future accidents from technology flaws, which isn't supported as it addresses future occurrences rather than existing evidence.
03

Evaluate the Best Match

Option (B) is selected as it directly correlates with the idea that human error or everyday problems like plumbing may lead to serious accidents, making such events, therefore, not improbable if operations continue.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Human Error
In the context of nuclear power plants, human error refers to mistakes made by individuals working within a facility. These errors can range from minor oversights to serious blunders that might lead to significant problems. Human error can occur at various stages: during operations, maintenance, or even while performing routine checks. Errors made by people are often because of inadequate training, distraction, fatigue, or miscommunication.

It's crucial to note that human error is not about incompetence alone. It also includes well-intentioned actions that unintentionally bypass safety protocols, sometimes due to pressure or lack of resources. This is why human errors are a vital consideration in nuclear plant safety discussions.

Understanding human error is key to preventing accidents. It involves recognizing the capability limits of workers and ensuring proper procedures are in place to minimize possible mistakes. This might include comprehensive training programs, clear operational protocols, and ensuring appropriate staffing levels to manage workload effectively.
Nuclear Plant Safety
Nuclear plant safety is a paramount concern due to the potential severity of accidents. Safety in these plants revolves around ensuring that reactors are properly contained and that radioactive materials do not escape into the environment. Nuclear plants are designed with multiple layers of safety features and systems intended to withstand both natural disasters and man-made errors.

Critical safety components include:
  • Robust containment structures: Built to prevent the escape of radioactive materials.
  • Sophisticated cooling systems: To remove heat from the reactor and prevent meltdown.
  • Redundant power supplies: Ensuring critical systems remain operational even if the main power supply fails.
  • Monitoring systems: For continuous oversight and quick detection of anomalies.

Safety isn't just about the design and technology of the plants. It also involves maintaining a culture that prioritizes safety over production goals. This includes regular safety drills, strict adherence to protocols, and fostering an environment where staff can report potential safety issues without fear of repercussions.
Accident Prevention Strategies
Accident prevention strategies in nuclear power plants aim to eliminate or mitigate the risks associated with those factors that can lead to accidents. These strategies focus not only on enhancing the safety of technology and design but also on human elements, operational practices, and emergency response capabilities.

Some key accident prevention strategies include:
  • Rigorous training programs: Educating employees about potential risks, proper procedures, and emergency protocols.
  • Enhanced communication systems: Ensuring clear, concise, and accurate information exchange among staff, especially in emergencies.
  • Regular maintenance and inspections: Keeping equipment in top condition to prevent failure.
  • Implementation of automated systems: To reduce dependency on human intervention for critical safety functions.

Additionally, the establishment of a "safety culture" is essential, where every employee, from top management to operators, shares responsibility for safety. This involves not only complying with established procedures but also promoting proactive thinking about unforeseen scenarios and potential hazards.

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