Question 1015 of 234 · California Wastewater Operator Exam
Methane produced in an anaerobic digester is dangerous mainly because it is
Exactly one answer is correct.
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Correct answer to question 1015
- B: explosive when mixed with air in the range of about 5 to 15 percent
Explanation
Digester gas is mostly methane, which is explosive in air between roughly 5 and 15 percent by volume. Sparks, open flame and static electricity must be kept away from digester areas.
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