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What is the required temperature range for water during a hydrostatic test?

  1. 50 F to 70 F

  2. 70 F to 120 F

  3. 60 F to 100 F

  4. 80 F to 140 F

The correct answer is: 70 F to 120 F

The correct temperature range for water during a hydrostatic test is essential for ensuring the accuracy and safety of the test. The range of 70°F to 120°F is ideal because at these temperatures, water achieves appropriate viscosity and density, which are crucial for identifying leaks and assessing the integrity of the boiler or pressure vessel being tested. When the water is too cold, it may not provide adequate pressure or could freeze, potentially causing damage or inaccurate results. Conversely, if the water is too hot, it could increase vapor pressure and lead to risks of scalding or erratic testing results. The specified range ensures that the hydrostatic test can be conducted safely and effectively, allowing for the reliable evaluation of the equipment’s condition under pressure.