________ hours of schooling credit are required to acquire a new class II wastewater collection
operator license - ANS-Sixty
A centrifugal pump has no impeller - ANS-False
A drop manhole is one with an intense alternate in pipe elevation - ANS-True
A shock load can have poisonous effect on a treatment plan? - ANS-True
A worker should never input a manhole with out the following - ANS-An attendant
Personal safety tools
Ventilation
Atmosphere reveal
Answer: all the above
According to OSHA an excavation _____ or more intensive need to be blanketed from a give
way - ANS-five feet
According to the TCQ when laying pipe bedding fabric should be no much less than _____
inches beneath the pipe and preliminary backfill ought to be as a minimum ____ inches -
ANS-6,12
An effective means of finding illegal hookups and defects in service strains is - ANS-Tv
inspection
Dry well and manhole air flow equipment need to provide at least ___ air alternate per ____
underneath continuous operation - ANS-6/ hour
Excessive general power utilized by a pump can be as a result of - ANS-A worn impeller
Misalignment
Tight packing
High pump rate due to low discharge head
Answer: any of the above
Fresh sewage has a pH of about - ANS-7.Four
Hydrogen sulfide is lighter than air - ANS-False