Question 1018 of 229 · California Water Distribution Operator Exam
Chlorine gas is heavier than air. Where should an operator expect leaking gas to collect?
Exactly one answer is correct.
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Correct answer to question 1018
- C: In low areas such as pits and floor level
Explanation
Cl2 is about 2.5 times heavier than air, so exhaust and gas detectors are placed near the floor. Operators should leave a leak area uphill and upwind.
More questions: Disinfection
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- 1021What chlorine to ammonia-nitrogen ratio, by weight, is typically targeted when making chloramines?
- 1022Which is an advantage of using chloramines instead of free chlorine in a distribution system?
- 1023Which problem is specific to chloraminated distribution systems?
- 1024Water that will be used for kidney dialysis or fish tanks needs special treatment when the system uses chloramines. Why?