Under what conditions must a boiler be constructed in accordance with ASME section 1?

Study for the Massachusetts 3rd Class Engineer Exam. Access flashcards and multiple choice questions with hints and explanations. Prepare for success on your exam!

A boiler must be constructed in accordance with ASME Section I when it operates at pressures of 15 PSIG or greater, or when it has a capacity of more than 3 horsepower. This is important because ASME Section I provides the necessary guidelines for the design and construction of high-pressure steam boilers, ensuring safety, reliability, and efficiency in operation.

Operating at 15 PSIG signifies a pressure level where the risks and potential hazards associated with steam boilers increase. Boilers that operate at this level require careful engineering and construction practices to prevent failures that could lead to catastrophic results. Additionally, the horsepower rating relates to the output capacity of the boiler, and exceeding this rating also requires adherence to these more rigorous standards to ensure safety and operational integrity.

Boilers that function below this threshold, such as those operating at atmospheric pressure or with lower horsepower ratings, do not require compliance with ASME Section I, as they pose significantly less risk of hazardous conditions. Therefore, the specific parameters of pressure and horsepower are critical in determining the necessary compliance with ASME guidelines.

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