HAZWOPER 40 Exam Prep - Site Control, Decontamination, Medical Surveillance & Air Monitoring (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A

HAZWOPER 40 Exam Prep - Site Control, Decontamination, Medical Surveillance & Air Monitoring (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Site Control Q: Lesson Description Answer: This lesson, Site Control, explains how to set up a site control program designed to reduce worker and public exposure to chemical, physical, biological, and safety hazards at hazardous waste sites. It discusses why and how to create safety zones (i.e., Exclusion Zone, Contamination Reduction Zone, and Support Zone) to ensure a safe environment for support staff and to fight against cross-contamination from those entering/exiting hot zones. Finally, it reviews the importance of having effective site security procedures to keep unauthorized outsiders who are most often not protected, away from exposure. Q: Learning Objectives At the completion of this lesson, you will be able to: Answer: List the three objectives that a hazard work zone should ensure. Describe the three most commonly used areas of a hazard work site. Summarize the distinctive characteristics and purpose of a Contamination Reduction Zone (CRZ). Name five functions of tasks associated with a support zone. Explain four reasons for establishing effective internal communication. Q: Introduction Answer: Most activities in a hazard area should be restricted to a few key workers who perform collectively in line-of-sight communication with a command post. Zones within the site are created to meet operation and safety objectives, and site maps designate characteristics of the site itself and of the surrounding community. The primary focus is that nothing unauthorized comes in or out. Q: Lesson Focus This lesson focuses on the following topics: Answer: Site Control Program Site Work Zones Site Security Q: Site Control Program Site control regulations listed in 29 CFR 1910.120 are intended to reduce worker and public exposure to chemical, physical, biological, radiological, and safety hazards. Site control is especially important in emergency situations. Answer: The level of site control needed depends on: Site characteristics Site size Surrounding community Q: Site Maps Answer: The site map is an essential piece of the site control program. The map serves as a central source of information about the site and can help personnel plan and organize activities. By using the map, issues are identified, such as access and evacuation routes and areas requiring the use of personal protective equipment (PPE). This makes the site map an excellent resource and supplement for daily safety/health briefings of field teams. The site map should be developed prior to the initial site entry using information from the preliminary evaluation. Q: Site Preparation Answer: The preparation of a site for clean-up activity is just as critical as the cleanup itself. Proper preparation is necessary to ensure that emergency response operations go smoothly and that workers are protected. If site preparation is not conducted properly, the health of those doing the preparation as well as those doing the cleanup can be endangered. Some major steps in site preparation include: The construction of roadways The elimination of physical hazards Installing skid resistant strips on slippery surfaces Q: Site Work Zones Answer: To reduce the spread of hazardous substances in a contaminated area, work zones should be established. As many work zones can be established as are needed to meet operational and safety objectives. Separate zones are created to distinguish different levels of personal protective equipment, or PPE. To prevent cross-contamination, workers and equipment should not be transferred between zones. Establishing work zones ensures: Personnel are properly protected against hazards specific to the area where they are working. Contamination is confined to the designated areas. Personnel can be located and evacuated in an emergency. There is no specific rule on the number of zones that should be created per work site except to create as many as are needed to meet operational and safety objectives. Separate zones are usually created when the hazards vary from location to location, creating a need for differing types of PPE. The three most commonly used zones are: Exclusion Zone - The contaminated area. Contamination Reduction Zone (CRZ) - The area where decontamination takes place. Support Zone - The uncontaminated area where workers should NOT be exposed to hazardous conditions. Each boundary line within these zones has specific names including: Hot Line - The outer boundary of the Exclusion zone. Contamination Reduction Corridor - Passageway between the Exclusion Zone and the Support Zone used for the decontamination process. Zone designation should be based on the types of operations to occur on-site, the flow of personnel and equipment desired, sampling and monitoring results, and the evaluation of the potential routes and amount of contamination dispersion in the event of a release. To prevent cross-contamination from contaminated areas into clean areas, movement of personnel and equipment between these zones Q: The Exclusion Zone Answer: The Exclusion Zone is the contaminated area where the clean-up work is performed. It's also sometimes referred to as the Hot Zone. The hot line is the outer boundary of the Exclusion Zone. Some activities performed in the Exclusion Zone include site characterization and cleanup. Most activities in hazard areas should be performed with a buddy, or performed in line-of-sight contact or communications contact with the command post supervisor in the Support Zone. Sometimes, such as during asbestos cleanups, the exclusion zone may be sealed off with plastic and put under negative air pressure so that no contaminants can escape the immediate area Q: The Buddy System Most activities in hazardous areas should be conducted with a buddy who is able to: