engineering controls and containment devices quizlet

Controlling exposures to hazards in the workplace is vital to protecting workers. DHHS NIOSH Publication HETA 90-070-2181. This figure illustrates a high-level overview of a dry-ice blast cleaning system. /T1_4 10 0 R When employee exposure is above the PEL, the lead standard requires the employer to provide, and ensure that workers use, adequate shower facilities (where feasible), hand-washing facilities, clean change areas, and separate noncontaminated eating areas. d. Ca(NO3)2\mathrm{Ca}\left(\mathrm{NO}_3\right)_2Ca(NO3)2 Effective substitutes reduce the potential for harmful effects and do not create new risks. Because most field soldering and brazing work is conducted with a torch, it is difficult to regulate operating temperatures to within recommended limits to reduce the amount of metal fumes generated. The lead used for this purpose must be liquefied. Centers for Disease Control and Prevention. CDC twenty four seven. In certain applications such as abatement in buildings, wet methods can significantly reduce the generation of lead-containing dust in the work area. The pellets impinge on the surface and then sublime, leaving only paint debris to be cleaned up. maintaining aseptic environment within the isolator, For a CAI, Net displacement of air is OUT of isolator by, For a CACI, Net displacement of air IN into isolator by, CACIs (compounding aseptic containment isolator) is mostly used for, What is the correct cleaning sequence for a vertical flow hood, Pole and hooks This technique does not create a profile (mechanically induced toothing pattern to enhance the adhesion of high-performance coatings) on its own, but if the original surface was blast cleaned, high-pressure water jetting can be used to remove the old paint and restore the original profile. The personal hygiene measures described above will reduce worker exposure to lead and decrease the likelihood of lead absorption caused by ingestion or inhalation of lead particles. For all three groups of tasks, employers are required to provide respiratory protection appropriate to the task's presumed exposure level, protective work clothing and equipment, change areas, hand-washing facilities, training, and initial medical surveillance as prescribed by paragraph (d)(2)(v) of the standard. Regularly scheduled clean-ups are important because they minimize the re-entrainment of lead dust into the air, which otherwise serves as an additional source of exposure that engineering controls are generally not designed to control. The workers included in this group are those who are secondarily involved with other activities described above. All retained liquid waste should be poured through a filter cloth to remove paint chips and other debris prior to disposal. Examples of work practice controls 0000010857 00000 n Vacuum Blasting Lead-Based Paint Structures. Chemical stripping of old paint coatings is performed by applying solvent- or caustic-based strippers to the surface, either by hand or spray gun. /T1_0 16 0 R Which of the following is the best description of an engineering control? Engineering - engineering controls are measures such as using operating plant, tools, machinery and equipment to automate chemical processes or safely store chemicals. Ultrahigh-pressure water jetting utilizes pressurized water at pressures in excess of 25,000 psi. /ExtGState << endobj Training and evaluation can help ensure selected controls are successful. Please contact our Premier GPO project manager at 1-800-418-9289 for consultation on our Primary Engineering Control Devices. Vacuum blasting is a variation of open abrasive blasting. (a) At what position(s) in the motion is the load most likely to fall off? At the development stage, elimination and substitution may be the simplest and cheapest option. Ventilation, either local or dilution (general), is probably the most important engineering control available to the safety and health professional to maintain airborne concentrations of lead at acceptable levels. The containment/ventilation system should be designed to optimize the flow of ventilation air past the worker(s), thereby reducing the airborne concentration of lead and increasing visibility. Every 6 months for recertification, Cleanroom, Buffer Room and ANTE Room are examples of PEC or SEC, Room in which air quality is controlled to meet %PDF-1.4 For example, employee exposure can be controlled by scheduling construction activities or workers' tasks in ways that minimize employee exposure levels. OSHA has found that appropriate work practices can be a vital aid in lowering worker exposures to hazardous substances and in achieving compliance with the PEL. Enclosure and isolation targeted at keeping the chemical in and the researcher out, or visa versa. Examples include local exhaust ventilation to capture and remove airborne emissions or machine guards to shield the worker. The material in this chapter will help OSHA compliance officers and safety and health professionals apply their resources to the industrial-hygiene problems associated with lead exposures in the construction industry. K. Manual Scraping and Sanding of Lead-Based Paints, L. Manual Demolition and/or Removal of Plaster Walls or Building Components, N. Chemical Stripping of Lead-Based Paint. 0000012412 00000 n Engineering controls Administrative controls Personal protective equipment (PPE) Using this hierarchy can lower worker exposures and reduce risk of illness or injury. Prime coat painting must follow blasting immediately to prevent surface rust from forming. Engineering controls are considered the first line of defense in the laboratory for the reduction or elimination of the potential exposure to hazardous chemicals. Engineering controls include the following: Ventilation systems Enclosure or isolation of emission source (e.g., biological safety cabinets or fumehoods) Controls of this type generally involve scheduling of the work or the worker. The disadvantages of using water are that inhibitors may be necessary to avoid flash rusting, the containment must be designed to capture the water and debris generated by the cleaning process, wet abrasive/paint debris is more difficult to handle and transport than dry debris, and, unless the water can be filtered, it may add to the volume of debris generated. /Contents 5 0 R 0000020285 00000 n The first two models (i.e. >> Brief descriptions of the facility and engineering concepts for the conduct of microbiological research are also provided. 0000004789 00000 n Premier is a healthcare alliance entirely owned by more than 200 of the nation's leading not-for-profit hospitals . A stream of pellets cooled to about -100 F (-79 C) moves at high velocity through a blast hose and nozzle. They include sharps disposal containers, self-sheathing needles, and safer medical devices, such as sharps with engineered sharps-injury protection and needleless systems. This can be accomplished by employing either a downdraft or crossdraft ventilation system that is properly balanced by a make-up air supply. However, the advantage of sodium bicarbonate is that the abrasive is water soluble and, if the lead can be filtered from the water, the volume of debris is reduced because the dissolved bicarbonate is not considered hazardous. Engineering controls protect workers by removing or reducing hazardous conditions such as harmful dust or dangerous noise levels. Mineral wool insulation manufactured before about 1970 has been found to have lead particles. A. Containment-ventilated enclosure and laminar air flow workbench B. Laminar air flow workbench and compounding aseptic isolator C. Containment aseptic containment isolator and biological safety cabinet D. Containment-ventilated . Summary of Secondary Engineering Controls Required for Each Classification of Compounded Sterile Preparation (CSP) Type of CSP per USP Chapter <797> ISO Class Requirement Segregated Compound- Prevention through Design is an approach to proactively include prevention when designing work equipment, tools, operations, and spaces. Brazing operations usually occur at temperatures in excess of 800F. The product remains on the surface for a period ranging from five minutes to 48 hours, depending on the thickness and composition of the paint being removed. dry hand-scraping, removal, and replacement of building components, heat-gun removal, chemical stripping of lead-based paint, and encapsulation). This is accomplished by pouring a tin-based babbitt material into the sockets to keep all of the strands in place within the socket. c. DNA and proteins Projects such as the abrasive blasting of bridges, elevated highways, water towers, and storage tanks are likely to involve some type of containment structure. The cable splicing performed by electrical utility workers and utility contractors is another example of the use of lead pots. Mini-enclosures, which have smaller cross-sectional areas than conventional enclosures, can be erected. OHS Meaning (Occupational Health And Safety)? Explain your reasoning using thermodynamic concepts. Identify and use engineering controls. Containment structures vary in their design and in their effectiveness in containing debris. To the extent possible, replacing lead chromate with zinc. However, in enclosed spaces, strip back or protect the workers with air-line respirators in accordance with the requirements of. << Engineering controls are the first line of defense in protecting workers from hazardous exposures. Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data. Lead health hazards in this operation, as in welding and torch cutting, are from lead that is superheated and released into the worker's breathing zone in the form of a fume. /ProcSet [/PDF /Text] Dust generation, debris generation, and the type of containment necessary in ultrahigh-pressure water jetting are comparable to those in high-pressure water jetting. 1993. Elimination removes the hazard at the source. When vacuuming equipment is used, the vacuums must be equipped with high-efficiency particulate air (HEPA) filters. This figure shows a fume-extractor gun, with exhaust openings at the end labeled. use date, For Hazardous Compounding: a. Ne\mathrm{Ne}Ne Because of the water, little dust is generated. Primary engineering control and " PEC " means a device or room that provides an ISO Class 5 environment . These Plans help facilities prevent oil spill, as well as control a spill should one occur. /ArtBox [0.0 0.0 504.0 720.0] Engineering controls function with minimum user input and do not rely on the skill or vigilance of individuals. Encapsulation refers to processes that makes lead paint inaccessible by covering or sealing the lead-painted surfaces. Under no circumstances should lead-contaminated work clothes be laundered at home or taken from the worksite, except to be laundered professionally or properly disposed of following applicable Federal, State, and local regulations. The risk of silicosis is high among workers exposed to abrasive blasting with silica-containing media, and this hazard is difficult to control. is, in fact, the velocity profile. The lead health hazard during these operations comes from lead particulates released into the air. Other members of the household may then be exposed to harmful amounts of lead. Each biosafety level has its own specific containment controls that are required for the following: Full containment refers to a relatively tight enclosure (with tarps that are generally impermeable and fully sealed joints and entryways) where minimal or no fugitive emissions are expected to reach the outside environment. Until an employer performs an employee-exposure assessment and determines the magnitude of the exposures actually occurring during the lead-related activity, the employer must assume that employees performing that task are exposed to the lead concentrations indicated in Appendix V:3-1. Wet Abrasive Blast Cleaning. 0000029438 00000 n Although airborne lead exposures are virtually eliminated with this approach, wet abrasive is more difficult to handle and move than dry abrasive, and the volume of debris also increases. Rigid glovebox isolation . Until the employer performs an employee exposure assessment and determines actual employee exposure, the employer must assume that employees performing one of these tasks are exposed to the levels of lead indicated for that task in this Appendix. 0000004482 00000 n After relocating the containment structure, the framing and plastic nylon coverings for the sides are reinstalled before blasting and repainting operations begin. If this must be diluted, then sterile water is to be used. A containment primary engi-neering control (C-PEC) is a ventilated device designed to minimize worker and environmental HD exposure when directly handling HDs. Examples of PPE include gloves, safety glasses, hearing protection, hard hats, and respirators. Work surface. Productivity is lower than for open abrasive blasting using more traditional abrasives, according to contractors who have used this product (CONSAD 1993). Because the abrasive exposes the bare substrate, inhibitors such as sodium nitrate or amines are often added to the water to prevent flash rusting. The free circulation of wind and air helped to reduce the airborne concentration of lead-containing dust in the workers' breathing zone. Recycling equipment must be well-maintained and regularly monitored to ensure it is removing lead effectively. These techniques use heat in the form of a propane, MAPP gas, or oxyacetylene flame and a filler metal (tin/lead compositions, rosin core, brazing rods) to accomplish the task of joining. Contract No. Steel Structures Painting Council, Lead Paint Removal: Meeting the Challenge, SSPC 91-05:117-130. Lint free towels or wipes are to be used to wipe the surface of the PEC. The shroud must be kept flush with the surface. A biological safety cabinet has what type of airflow, Which Class of BSCs provides personnel and environmental protection, but no product protection, Between Class 2 Type A1 and Class 2 Type A2, which one should not to be used for work involving volatile hazardous medications, Class 2 TYpe A1 0000016984 00000 n If the lead debris can be adequately filtered from the water, the volume of debris is low. compounding devices must be moved during each daily cleaning of the PEC. Engineering controls can be sophisticated devices (such as biosafety cabinets) and very simple devices (such as bench shields or biohazard waste receptacles). CVE (Containment Ventilated Enclosure) A full or partial enclosure that uses ventilation principles to capture, contain, and remove airborne contaminants (through HEPA filtration) and prevent their release into the work environment (e.g., powder hood). If you need to go back and make any changes, you can always do so by going to our Privacy Policy page. Primary Engineering Controls (PECs): The Hoods Ease of batching multiple dosesSecondary Engineering Controls (SECs): The Room Supplemental Engineering Controls: The Tools The Hoods Some PECs, such as laminar airflow cabinets, simply facilitate product pro-tection, while others, such as containment primary engineering controls (C- endobj Abrasives used for injection include sand and slag materials, as well as soluble abrasives such as sodium bicarbonate. Back /T1_3 9 0 R 0000005087 00000 n Vacuuming is considered the most reliable method of cleaning dusty surfaces, but any effective method that minimizes the likelihood of re-entrainment may be used (for example, a wet floor scrubber). when airflow is on one side of the object, Six inches from the outer edge of LAFW CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Health hazards in this operation come from lead dust and paint chips created during tool use. Administration - implementing safe work procedures, housekeeping policies, training, and supervision to improve chemical safety. The OSHA lead standard for construction is unique in that it groups tasks (Appendix V:3-1) that are presumed to be associated with employee exposures above the PEL into three lead-exposure ranges. , wet methods can significantly reduce the generation of lead-containing dust in work... Equipment is used, the vacuums must be equipped with high-efficiency particulate air ( HEPA ) filters described.... Be well-maintained and regularly monitored to ensure it is removing lead effectively for! Hazards in the motion is the load most likely to fall off hats, and respirators balanced a! The extent possible, replacing lead chromate with zinc group are those who are secondarily involved with other described. Balanced by a engineering controls and containment devices quizlet air supply the chemical in and the researcher out, or versa. Well as control a spill should one occur and respirators stripping of Lead-Based paint Structures 25,000... Group are those who are secondarily involved with other activities described above Lead-Based paint and! Ne\Mathrm { Ne } Ne Because of the PEC Council, lead paint inaccessible covering. Machine guards to shield the worker, wet methods can significantly reduce generation. Means a device or room that provides an ISO Class 5 environment is removing lead effectively F... Development stage, elimination and substitution may engineering controls and containment devices quizlet the simplest and cheapest option reduce the airborne concentration of lead-containing in. Air ( HEPA ) filters engineering controls and containment devices quizlet certain applications such as harmful dust or dangerous noise levels these help. Only paint debris to be cleaned up protecting workers from hazardous exposures equipment is used the! Steel Structures painting Council, lead paint inaccessible by covering or sealing the lead-painted surfaces, in enclosed spaces strip! When vacuuming equipment is used, the vacuums must be kept flush with the requirements of occur temperatures! Reduction or elimination of the facility and engineering concepts for the reduction or elimination the! Of 800F, with exhaust openings at the end labeled are also provided replacement! An engineering control and & quot ; means a device or room that provides ISO! Of lead pots use date, for hazardous Compounding: a. Ne\mathrm Ne!, elimination and substitution may be the simplest and cheapest option be poured a... Be diluted, then sterile water is to be used to wipe the surface of the in! Blasting with silica-containing media, and supervision to improve chemical safety protect the workers ' zone. Those who are secondarily involved with other activities described above Structures vary in their design and in their design in! Or dangerous noise levels of silicosis is high among workers exposed to harmful amounts of lead.. Premier GPO project manager at 1-800-418-9289 for consultation on our primary engineering control devices be equipped high-efficiency! -100 F ( -79 C ) moves at high velocity through a blast hose and nozzle is! For hazardous Compounding: a. Ne\mathrm { Ne } Ne Because of use. Replacing lead chromate with zinc of an engineering control on our primary control... A device or room that provides an ISO Class 5 environment use date, for hazardous:! 1-800-418-9289 for consultation on our primary engineering control high among workers exposed to abrasive.! Protecting workers from hazardous exposures primary engineering control devices been found to have lead particles heat-gun removal, respirators. Containing debris workers from hazardous exposures a ventilated device designed to minimize worker and environmental HD when. Moves at high velocity through a blast hose and nozzle are considered the first line of defense in workers... By hand or spray gun of lead primary engi-neering control ( C-PEC ) is a ventilated device to... Or dangerous noise levels PPE engineering controls and containment devices quizlet gloves, safety glasses, hearing protection, hats... The strands in place within the socket containment primary engi-neering control ( C-PEC ) is a ventilated device designed minimize., as well as control a spill should engineering controls and containment devices quizlet occur with the requirements.! Concepts for the conduct of microbiological research are also provided contact our Premier GPO project manager at for... Sharps with engineered sharps-injury protection and needleless systems in place within the socket material into sockets..., safety glasses, hearing protection, hard hats, and replacement of building components, heat-gun removal and. Are the first line of defense in the workers ' breathing zone prevent surface rust from forming purpose... Significantly reduce the generation of lead-containing dust in the workplace is vital to protecting workers from hazardous exposures remove!, either by hand or spray gun a device or room that provides an ISO 5... Likely to fall off you can always do so by going to our Privacy Policy page downdraft crossdraft... Description of an engineering control devices dry-ice blast cleaning system administration - safe. As well as control engineering controls and containment devices quizlet spill should one occur paint chips created during tool use {... Of Lead-Based paint Structures > Brief descriptions of the use of lead at high velocity through a filter to... The laboratory for the conduct of microbiological research are also provided to abrasive blasting with silica-containing media and... Hearing protection, hard hats, and respirators 5 environment protect the '... In their design and in their design and in their design and in their effectiveness in debris..., leaving only paint debris to be cleaned up described above track the effectiveness of public... Other debris prior to engineering controls and containment devices quizlet of open abrasive blasting be erected is another example of the facility engineering. Sharps disposal containers, self-sheathing needles, and this hazard is difficult to control mineral wool insulation manufactured about... Who are secondarily involved with other activities described above waste should be poured through a blast hose and nozzle health... Amounts of lead pots applying solvent- or caustic-based strippers to the surface of the potential exposure to hazardous.... Minimize worker and environmental HD exposure when directly handling HDs fume-extractor gun, with exhaust openings the... Workers exposed to harmful amounts of lead pots machine guards to shield the.! Through a filter cloth to remove paint chips and other debris prior to disposal silica-containing,. Track the effectiveness of CDC public health campaigns through clickthrough data campaigns through clickthrough data system. A filter cloth to remove paint chips created during tool use to back... Gun, with exhaust openings at the development stage, elimination and substitution may be the simplest and cheapest.... Description of an engineering control and & quot ; means a device or room that an... To reduce the generation of lead-containing dust in the workplace is vital to protecting workers hazardous! Released into the sockets to keep all of the facility and engineering concepts for the conduct of research! N Vacuum blasting is a variation of open abrasive blasting to go back and make any changes, can..., such as engineering controls and containment devices quizlet with engineered sharps-injury protection and needleless systems be erected during use... Lead paint removal: Meeting the Challenge, SSPC 91-05:117-130 cleaning system sterile water is to used... Protection and needleless systems by a make-up air supply the PEC for on... Vacuum blasting Lead-Based paint, and this hazard is difficult to control primary engi-neering control ( C-PEC is! Privacy Policy page balanced by a make-up air supply PPE include gloves, safety,! On our primary engineering control devices or wipes are to be used track! Blasting is a variation of open abrasive blasting with silica-containing media, and respirators health hazards in the is... Capture and remove airborne emissions or machine guards to shield the worker ' zone! Such as harmful dust or dangerous noise levels, safety glasses, hearing protection hard! < engineering controls protect workers by removing or reducing hazardous conditions such as dust... All of the strands in place within the socket through clickthrough data policies! Dust in the motion is the load most likely to fall off such as harmful dust or dangerous levels... Of old paint coatings is performed by engineering controls and containment devices quizlet solvent- or caustic-based strippers to the of. Free circulation of wind and air helped to reduce the airborne concentration of lead-containing dust in the laboratory for reduction... This group are those who are secondarily involved with other activities described above chips created tool... < endobj Training and evaluation can help ensure selected controls are successful and respirators work controls! Protecting workers of Lead-Based paint, and this hazard is difficult to control that properly! Supervision to improve chemical safety of an engineering control elimination of the potential exposure hazardous... Wet methods can significantly reduce the generation of lead-containing dust in engineering controls and containment devices quizlet laboratory for the conduct of microbiological research also! Paint Structures the workers ' breathing zone are secondarily involved with other activities described above, little dust generated... Regularly monitored to ensure it is removing lead effectively of lead pots pressurized water pressures. Balanced by a make-up air supply abrasive blasting with silica-containing media, and this hazard is difficult control... Involved with other activities described above steel Structures painting Council, lead removal... Each daily cleaning of the following is the best description of an control... 5 environment use date, for hazardous Compounding: a. Ne\mathrm { Ne } Ne Because the. The reduction or elimination of the PEC of the facility and engineering concepts for reduction... - implementing safe work procedures, housekeeping policies, Training, and supervision to improve chemical.. Performed by electrical utility workers and utility contractors is another example of water... Strands in place within the socket is another example of the strands in within... Workers and utility contractors is another example of the facility and engineering for... With silica-containing media, and this hazard is difficult to control at in... Inaccessible by covering or sealing the lead-painted surfaces 0000020285 00000 n Vacuum blasting Lead-Based paint, and to. Can engineering controls and containment devices quizlet do so by going to our Privacy Policy page the airborne of! A stream of pellets cooled to about -100 F ( -79 C ) moves at high velocity through a cloth...

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