PA Mining Law - Sections 251-260 (1)
Practice test questions for the PA Mine Officials' Exam


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Question 2 of 16

2.  When checking the Pressure Relief Valve:

Choices:
  1. Sentinel low pressure warning indicates valve failur
  2. Opening pressure should lie between 3 and 6 mbar.
  3. Replace the pressure relief valve if opening pressure lies between 2 and 5 mbar.
  4. Set the test unit to "negative pressure pumping."
  5. None of the above


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