Minnesota Special Engineer Boiler License Practice Exam

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What defines a "Low Pressure Boiler"?

  1. Operating at a pressure of 30 psig or less

  2. Operating at a temperature of 150 degrees F or less

  3. Operating at a steam pressure of 15 psig or less

  4. Operating with a hot water pressure of 200 psig or less

The correct answer is: Operating at a steam pressure of 15 psig or less

A "Low Pressure Boiler" is specifically defined by the maximum pressure it operates under, which is crucial for determining compliance with safety regulations and operational protocols. The definition states that a boiler is considered low pressure if it operates at a steam pressure of 15 psig or less. This distinction is important because low pressure boilers are subject to different regulations and safety requirements compared to high pressure boilers, impacting their design, maintenance, and operation. The other distinctions focus either on temperature or other pressure levels that do not align with the technical definition of low pressure for steam boilers. Understanding this distinction is fundamental when preparing for the operation and regulatory requirements of different types of boilers in settings governed by the Minnesota Special Engineer Boiler License.

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