Waste Water Certification Exam With Latest Updated Solutions 2024

Waste Water Certification Exam With Latest Updated Solutions 2024 The first step in maintenance staff should take in properly locking and tagging out a piece of equipment is to - correct the operator on duty When working in an area with two or more floor coverings, be sure that they are always - correct answer.Secured together When manually lifting any object be sure to - correct 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 answer.19.5% What provides safety information for potentially hazardous or toxic materials? - correct answer.MSDS Material safety Data Sheet The threshold limit value concentration for chlorine vapor is - correct answer.0.5 ppm When working in confined spaces where flammable gases may be present, use only tools made of - correct answer.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 answer.1 Hearing protection must be made available to all employees exposed to noise levels above - correct answer.85 decibels, averaged over 8 working hours Recommended personal hygiene practices to minimize the risk of being infected by wastewater pathogens include - correct ing 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 - correct d 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? - correct answer.Class C` In confined space entry, LFL stands for - correct answer.Lower flammability limit When mixing dry sodium hydroxide and water in an enclosed vessel or area, be sure that - correct vessel or area is properly vented Personnel should not work alone on energized equipment, for example, a magnetic starter, that operates at or above - correct answer.480 volts. It is considered lethal any amount about this. Which of the following hazardous chemicals in a hydrocarbon? Methane. Phosphoric acid. Sodium hydroxide. Ferric chloride. - correct answer.Methane. Pulmonary capacity tests are required before operators can be cleared for using respiratory equipment. These tests should be performed at a minimum of once every - correct answer.3 years According to article 250 of the U.S. National Electric Code (NEC), what color should green wires be? - correct answer.Green. If your 910 kg (1 ton) chlorine cylander is leaking, what type of chlorine institute repair kit should be used? - correct answer.Type A is for 70 kg (150 lbs) Type B is for 1 ton Type C is for rail cars