WASTEWATER CERTIFICATION EXAM 2023 QUESTIONS AND ANSWERS ALREADY PASSED A+

The first step in maintenance staff should take in properly locking and tagging out a piece of equipment is to - CORRECT ANS alert the operator on duty When working in an area with two or more floor coverings, be sure that they are always - CORRECT ANS Secured together When manually lifting any object be sure to - CORRECT ANS 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 - CORRECT ANS 19.5% What provides safety information for potentially hazardous or toxic materials? - CORRECT ANS MSDS Material safety Data Sheet The threshold limit value concentration for chlorine vapor is - CORRECT ANS 0.5 ppm When working in confined spaces where flammable gases may be present, use only tools made of - CORRECT ANS a non-sparking alloy 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? - CORRECT ANS 1 Hearing protection must be made available to all employees exposed to noise levels above - CORRECT ANS 85 decibels, averaged over 8 working hours Recommended personal hygiene practices to minimize the risk of being infected by wastewater pathogens include - CORRECT ANS changing out of your work clothes and showering before leaving work