CHST Exam Study Set Questions With 100% Correct Answers 2024, Exams of Advanced Education

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CHST Exam Study Set Questions With

100% Correct Answers 2024

What is the purpose of metatarsal Guards? - Correct Answer- Metatarsal guards protect the instep area from impact and compression. Made of aluminum, steel, fiber or plastic these guards maybe strapped to the outside of the shoe. Asbestos fibers and silica dust may cause a what effect in the lung tissue? - Correct Answer-Fibrosis is a condition in which the lung becomes scarred and inflexible, making the lung unable to expand and contract. Respirators are generally divided into which categories? - Correct Answer-Air-purifying and air-supplied. What eye protection would be most appropriate for a worker doing heavy metal grinding? - Correct Answer-A combination of goggles vented or not vented and a face shield provides the best protection from the damaging effects of heavy metal grinding. face shields are also required for any splashing hazards.

A maintenance workstation is located inside a hazard area for a robot, which is the best hazard control action? - Correct Answer-Job redesign by moving the maintenance workstation outside of the hazard area to eliminated exposure risk to the robot hazard while performing duties at the workstation. De energizing or lock out of the robot, light curtains, enclosure are an example of an engineering control. the lock out procedure and training are administrative controls. a full-, face piece supplied air respirator in positive pressure mode has a protection factor of: - Correct Answer-1000 APF- assigned protection factor means the workplace level of respiratory protection that a respirator or class of respirator is expected to provide to employees when the employer implements a continuing effective respiratory protection program as specified. according to an energy control program, it is required to ensure that before any worker performs servicing/maintenance work on a machine or equipment, where the unexpected start up or release of stored energy could occur and cause injury, the machine or equipment shall be isolated from the energy source. This generally requires a physical lock and tag arrangement to meet the intent of the

policy. when it is permissible to only use a tagout system of protection. - Correct Answer-When other protective measures are in place. In the welding environment the term 'GTAW" represents? - Correct Answer-Gas tungsten Arc- Welding. Which is a process that joins metals by heating them with an arc between a tungsten electrode and the work, shielding is obtained from a gas mixture. The process is often called TIG welding. Because of the inherent safety and health hazards involved in the welding process the chst examination may have several questions on the different process and the hazards associated with each. What type of respirator should be used for entry into a confined space? - Correct Answer-Airline with supplied escape bottle. the question does not tell us anything about the atmosphere in the confined space, respirators may not even be required. Without any other detail one must assume that the conditions within the confined space are IDLH and oxygen deficient, in which case the best and safest choice is the airline with an escape supply.

which of the following respirators is an air-purifying type? Gas Mask. SCBA. Airline Respirator. Abrasiveblasting helmet. - Correct Answer-Gas Mask- only the gas mask is an air purifying type of respirator the others are all air supplying. Which of the following is the most correct concerning a rigged load subject to the sudden movement of a hoisting apparatus ( up or down) during a hoisting operation? 1- The load should be padded 2- The load will not be affected. 3-stresses will be increased in the rigging. 4-Safety factors are based on the increased stresses caused by such operations. - Correct Answer-3- Stresses will be increased in the rigging.

the inertia of an object in motion increases when there is an increase or decrease in speed. This change in inertia causes great increases in stress forces placed on the rigging. as a load line starts to move, sudden acceleration can cause as much as twice the stress on the rigging as the actual load. this is why most rigging or hoisting instructions contain warnings or cautions about applying lifting forces in a slow and smooth manner. Osha requires protective equipment for protection from high voltage electrical contact in some instances. These "rubber goods" consist of gloves, matting,blankets,hoods,line hose and sleeves. several standards are available and cover initial/periodic testing and continued care and use of such equipment. Which of the following statements is not correct concerning electrical high- voltage gloves? 1- Gloves must be given an "air" test prior to use. 2- Rubber gloves are often worn with an approved leather outer glove. 3-A metal reinforced outer glove should be worn over the rubber inner glove and the outer glove should be one inch longer than the inner glove.

4-Periodic testing is necessary, the interval of such a testing depends on the use of the glove and the conditiond under which the glove is used. - Correct Answer-3- Rubber gloves, and other rubber goods, are Oten used for protection against contact with high voltage conductors. There are several classes of gloves however most required leather outer gloves for protection. Shown below is a short instruction sheet included with rubber gloves from a major distributor. When placing a standard straight ladder, the horizontal distance from the base to the vertical plane of the support should be approximately ....... ............ the ladder length between supports. - Correct Answer-When setting up a straight ladder the BASE should be one-fourth the ladder length the vertical plane of the top support. Which of the following would be the best use of direct reading instrumentation?

1. To determine the amount of several different hazards.

2. To monitor for sporadic increases in particular contaminate.
3. To provide different generalizations about several gasses.
4. To provide absolute accuracy during the ongoing assessment of confined spaces. - Correct Answer-2- Directing reading instrumentations is a very broad category and ranges from detector tubes to portable gas chromatographs that are capable of detecting just above every chemical one could encounter. Additionally, direct reading instrumentation can be very accurate or, in the case of detector tubes, not so accurate. However, direct reading instrumentation does suffer from one common ailment, almost all of these instruments suffer from interference by other contaminants. A CHST is involved in a monitoring operation within an equipment repair area and is using a carbon monoxide direct reading instrument. The instrument has been reading 35 ppm for 4c hours suddenly without any change in the conditions in the general area the indicator increases rapidly toto 65 ppm and has remained constant for 5 minutes. which of the following in the most appropriate action.
5. Shut down the job site immediately.
6. Quit monitoring.

3. Continue monitoring.
4. Stop and recalibrate instrument. - Correct Answer-4- Based on the statement in the question that there were no changes in plant operation we feel the best course of action would be to stop monitoring and recalibrate the instrumentation. The reading of 65ppm is not life threatening and recalibration should be able to be accomplished in fresh air in a very short time.