The boiler water level begins to fall very slowly due to the sudden failure of a water wall tube. In response to this situation, you should continue the feed water supply and immediately __________.
• Boiler casualty response when a pressure-part (like a water wall tube) suddenly fails • Why maintaining some water level and avoiding overheating/exposing tubes is critical in an emergency • The danger of over-pressurization or making damage worse by the wrong immediate action
• Think about what happens inside the boiler if you suddenly lose water through a tube but keep the same firing rate—does that make the situation safer or worse? • In the first few moments, is it more important to protect the boiler metal (tubes, drum) from overheating, or to protect steam pressure for the plant/load? • Which option could create an additional serious hazard (for example, to safety valves or furnace conditions) rather than stabilizing the situation?
• Identify which choice best reduces heat input to the boiler quickly without creating a new hazard • Eliminate any option that would defeat or interfere with a safety device built to protect from overpressure • Consider which action is consistent with standard emergency boiler casualty procedures for a known tube failure and falling level
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