WASTEWATER CERTIFICATION EXAM QUESTIONS AND ANSWERS %
GUARANTEED SUCCESS.
The first step in maintenance staff should take in properly locking and tagging out
a piece of equipment is to answer >>>>>> alert the operator on duty
When working in an area with two or more floor coverings, be sure that they are
always answer >>>>>> Secured together
When manually lifting any object be sure to answer >>>>>> keep it close to your
body and use leg strength
Oxygen deficiency becomes a concern when the oxygen level in a confined space
is less than answer >>>>>> 19.5%
What provides safety information for potentially hazardous or toxic materials?
answer >>>>>> MSDS Material Safety Data Sheet
The threshold limit value concentration for chlorine vapor is answer >>>>>> 0.5
ppm
When working in confined spaces where flammable gases may be present, use
only tools made of answer >>>>>> a non-sparking alloy
, WASTEWATER CERTIFICATION
In addition to the worker entering a confined space, what is the minimum number
of people required to be present during a confined space entry? answer >>>>>>
1
Hearing protection must be made available to all employees exposed to noise
levels above answer >>>>>> 85 decibels, averaged over 8 working hours
Recommended personal hygiene practices to minimize the risk of being infected
by wastewater pathogens include answer >>>>>> changing out of your work
clothes and showering before leaving work
When using protable electric tools in damp areas or around standing water, be
sure to plug them into a answer >>>>>> ground fault circuit interrupter
You are the operator-on-duty. The alarm for the fire detector in the Belt filter
press control room goes off. what type of fire extinguisher would you take to
respond to this alarm? answer >>>>>> Class C`
In confined space entry, LFL stands for answer >>>>>> Lower flammability limit
When mixing dry sodium hydroxide and water in an enclosed vessel or area, be
sure that answer >>>>>> the vessel or area is properly vented
Personnel should not work alone on energized equipment, for example, a
magnetic starter, that operates at or above answer >>>>>> 480 volts. It is
considered lethal any amount about this.