engineering controls and containment devices quizlet

For work operations where the sources of lead dust generation are numerous and widely distributed (e.g., open abrasive blasting conducted in containment structures), dilution ventilation may be the best control. 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. This can be accomplished by employing either a downdraft or crossdraft ventilation system that is properly balanced by a make-up air supply. << A device or barrier that is designed to help separate the hazard from the operator General engineering and work practice controls that can be applied to almost any construction activity are addressed under Paragraph II, below. Intermediate or finish coats of paint are applied later. Soldering and brazing are techniques that are used to join metal pieces or parts. Containment or enclosure structures can be broadly classified as either partial or full. They include specific equipment, infrastructure and design elements. Chemical stripping, vacuum-shrouded hand tools, vacuum blasting, or other suitable method may be used. /Font << Sponge jetting involves the use of specialized blasting equipment that propels a combination of an abrasive material (e.g., steel, garnet) encased in a soft sponge (foam) medium. Examples of the kinds of engineering controls and work practices that can be implemented to protect blasting workers are presented below. CDC twenty four seven. It is more time-consuming than conventional open abrasive blasting because the abrasive blast nozzle must be smaller to be able to capture the ricocheting abrasive and dust. Smith, Michael Abbott. >> Abrasives used for injection include sand and slag materials, as well as soluble abrasives such as sodium bicarbonate. For problems with accessibility in using figures and illustrations in this document, please contact the Office of Science and Technology Assessment at (202) 693-2095. The sodium bicarbonate will not remove paint, rust, and mill scale as efficiently as sand or slag abrasives. NIOSH. Filtered materials as well as other waste and debris should be placed in appropriately labeled, 6-mil plastic bags or sealed containers suitable for the transport of lead waste, and stored in a secure area pending disposal in accordance with State and/or local requirements. /T1_5 11 0 R Employers should correctly train workers and supervisors on how to use controls. Using engineering controls as the next best line of defense. 0000006516 00000 n Hand sanding can also produce excessive dust. /Count 2 An example is using plant-based printing inks as a substitute for solvent-based inks. 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. In addition, the abrasive classifier must be extremely efficient in removing lead dust, to prevent it from being reintroduced into the containment and combining with the paint to increase worker exposures. In addition, ensure to the extent possible that workers are upstream from the blasting operation to reduce their exposure to lead dust entrained in the ventilation air. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Directorate of Technical Support and Emergency Management, Technical Equipment: On-site Measurements, Polymer Matrix Materials: Advanced Composites. Any material that is being considered as a substitute for a lead-based paint should be evaluated to ensure that it does not contain equally or more toxic components (e.g., cadmium or chromates). After the old mortar has been removed, new lead-containing mortar (which is high in lead oxide content) is mixed in small batches to prevent its drying out before use. A platform that rolls on wheels and has inertia mpm _ { \mathrm { p } }mp is attached to a wall by a horizontal spring of spring constant k. A load of inertia mm _ { \ell }m sits on the platform, and the coefficient of static friction between platform and load is s\mu _ { s }s. /T1_4 7 0 R Because of the water, this kind of jetting generates little dust. Certain lead-related construction tasks commonly produce exposures above the PEL and often orders of magnitude above the PEL. HWn}G2h^Ei3#3KIM$fx[59Sx`KbwS.|@|]X/eM)QDuY1b^{0&\GH8 &0?6)@wr7vwAL'h_gOQTT#tcgG$. 0000003646 00000 n In addition, some vacuum heads are so heavy that mechanical suspension systems are needed to support them, and even then, the blasters may need to take frequent breaks. Keep surfaces and debris moist when disturbing them. Mini-enclosures, which have smaller cross-sectional areas than conventional enclosures, can be erected. the cabinet's recirculated air) through the front grille How do stiffness, density, and temperature affect sound waves? mortar between the tiles/brick) must be removed. Dilution ventilation, on the other hand, allows lead particles generated by work activities to spread throughout the work area and then dilutes the concentration of particles by circulating large quantities of air into and out from the work area. 0000020586 00000 n The engineering control methods that can be used to reduce or eliminate lead exposures can be grouped into three main categories: (1) substitution; (2) isolation; and (3) ventilation. 0000016605 00000 n When all feasible engineering and work practice controls have been implemented but have proven inadequate to meet the PEL, employers must nonetheless implement these controls and must supplement them with appropriate respiratory protection. However, long-term operating costs tend to be lower, especially when protecting multiple workers. The following engineering controls apply: Portable local exhaust ventilation should be used to remove lead dust and particulates from localized areas. An engineering control measure is one that eliminates, isolates, or removes a hazard from the workplace; things used in the workplace to help reduce the risk of an exposure. 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. 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). 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. ded into three categories representing primary, secondary, and supplementary levels of control. Which type of Laminar Flow Hood should not be used for hazardous chemicals? Engineering controls are devices that isolate or remove the bloodborne pathogen hazard from the workplace (OSHA, 2019a). /Pages 2 0 R These workers may be exposed to lead as a result of the dispersion of lead dust from the abrasive blasting, the leaking of hose connections, the changing of waste drums, the malfunctioning of recycling equipment, and clean-up activities. Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. Engineering controls can include modifying equipment or the workspace, using protective barriers, ventilation, and more. Prohibit burning to remove lead-based paint. b. I2\mathrm{I}_2I2 /Contents 5 0 R 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. 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. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests. Because substitute materials can also be hazardous, employers must obtain a Material Safety Data Sheet (MSDS) before a material is used in the workplace. When employees use PPE, employers should implement a PPE program. Six inches from back of LAFW In addition, the volume of water required is reduced, with less than five gallons per minute typically used. The third model, which is a pressure-demand respirator, must be worn whenever silica sand is used as an abrasive material (NIOSH 1993). The health hazards in this activity are caused by the lead dust and paint chips produced in the scraping process. (a) At what position(s) in the motion is the load most likely to fall off? containment (i.e., a closed-system transfer device [e.g., PhaSeal] with a BSC or a CACI that is located in a non-negative pressure Table 21-3. /GS0 13 0 R This is accomplished by pouring a tin-based babbitt material into the sockets to keep all of the strands in place within the socket. endobj Controls of this type generally involve scheduling of the work or the worker. What Does Engineering Controls Mean? CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. 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. This process (original enzyme $\rightarrow$ denatured enzyme) is endothermic and spontaneous. Saving Lives, Protecting People, The National Institute for Occupational Safety and Health (NIOSH), National Institute for Occupational Safety and Health, Engineering Controls for Silica in Construction, U.S. Department of Health & Human Services, are part of the original equipment design, remove or block the hazard at the source before it comes into contact with the worker, prevent users from modifying or interfering with the control, need minimal user input for the controls to work, operate correctly without interfering with the work process or making the work process more difficult, limiting access to hazardous areas or machinery, inspection and replacement of damaged or worn-out PPE, program monitoring for continued effectiveness, while other controls are under development, when other controls cannot sufficiently reduce the hazardous exposure, when PPE is the only control option available. CDC twenty four seven. Complete containment of noise, heat, or pressure-producing processes. nonhazardous pharmaceutical preparations by Taken together, these factors suggest that a worker's exposure to airborne lead during welding or cutting activities can vary widely and may be exceedingly high. Engineering Controls. E. High-Pressure Water Jetting With Abrasive Injection. the grout between the tiles/brick must be restored), repaired, or relined with an entirely new lining (either tile or lead brick). 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 the initial medical surveillance prescribed by paragraph (d)(2)(v) of the standard (29 CFR 1926.62). This could include changing the work process to stop using a toxic chemical, heavy object, or sharp tool. 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 It provides needed support for ensuring that proper work practices are followed by workers. Containment primary engineering control (C-PEC)the device in which compounds are mixed, including a containment ventilated enclosure (CVE) commonly called powder hoods, a biological safety cabinet (BSC), and a compounding aseptic . 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. Consequently, appropriate controls must be implemented when using chemical strippers. e. C6H14\mathrm{C}_6 \mathrm{H}_{14}C6H14, PECs are designed to maintain ISO Class _______ air quality in the compounding work zone, PEC with Unidirectional, linear airflow at a fixed velocity within a confined area, Air that exits the high-efficiency particulate air (HEPA) filter is called ______ _____, HEPA filter Removes _______% of particles _____ micron, HEPA filters use positive velocity (______ feet per minute 20%) to prevent room air from entering clean zone, When airflow is compromised in a laminar flow hood it creates a, Zone of turbulence is ____X the diameter of the object use date, For Hazardous Compounding: These activities are typically performed during residential and commercial/institutional lead abatement projects. Engineering controls, including facility construction and design elements in the laboratory space; Safety equipment, including personal protective equipment (PPE) and biosafety cabinets; Administrative controls, including specific access, training, and occupational medicine policies; and Engineering controlsreduce or prevent hazards from coming into contact with workers. %PDF-1.4 0000004025 00000 n After inspection of the lining, the damaged pointing (i.e. Interlock systems for lasers and machinery are other good examples of isolating processes. _________-pressure buffer room, For Hazardous Compounding: Identify and ensure the use of . Partial containments refer to those that inherently allow some level of emission to the atmosphere outside of the containment. Use techniques with known low exposure potential such as encapsulation and removal/replacement instead of hand scraping with a heat gun. Lead caulking is used in commercial construction building applications, most commonly in the joining or sealing of cast iron soil pipes. This page details the types of engineering controls used at UCL. Administrative controls establish work practices that reduce the duration, frequency, or intensity of exposure to hazards. Engineering control can also be said to be is a piece of equipment, a machine, or mechanical device designed to minimise the harm associated with a hazard. The cost of cryogenic cleaning, however, is still often prohibitive. Engineering controls are designs or modifications to equipment, industrial plants, processes, or systems that reduce the risk of worker exposure to a hazard. Examples of PPE include gloves, safety glasses, hearing protection, hard hats, and respirators. /MediaBox [0.0 0.0 504.0 720.0] However, both productivity and the ability to remove tight paint, rust, and mill scale can be improved through the addition of abrasive to the water stream. immediately below the work surface, Total-exhaust cabinet; no air is recirculated, Gas-tight enclosure, accessed by a pass-through Engineering controls are the type of controls that protect workers by removing hazardous conditions or by placing a barrier between the worker and the hazard. Examples of work practice controls A PEC is a device or room that provides an ISO Class 5 environment for com-pounding CSPs. This figure shows a fume-extractor gun, with exhaust openings at the end labeled. when airflow is on all sides of the object, Zone of turbulence is _____X the diameter of the object You can review and change the way we collect information below. Workers and their supervisors should evaluate controls on a regular basis. Small areas and areas with gross irregularities cannot be effectively sealed by the shroud. The SPCC rule requires facilities to develop, maintain, and implement an oil spill prevention plan, called an SPCC Plan. (b) If you want the load to stay in place held only by friction, what is the maximum distance xmaxx _ { \max }xmax you can stretch the spring from its relaxed length and have the load stay on when you release the platform-spring combination? /T1_5 17 0 R These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page. Mini-enclosure containment structures are usually light-weight, low wind-loading structures that isolate that area where blasting and surface priming is taking place on a given day. -the killing of all microbial life including microbial spores, -use of antimicrobial agents on inanimate subjects such as work surfaces, equipment items, agents not known to cause disease in healthy adult humans, agents with moderate hazardous potential to the personnel or environment, exposure potential to pathogens spread by aerosol inhalation, serious infection with possible lethal consequences, exposure to dangerous and exotic agents that have high individual risk of life-threatening disease that may be transmitted by aerosol with no vaccine or therapy available, handling materials in the lab setting without contact with blood or body fluids or infectious organisms, workstations where opened specimens are handled, activities which can result in the formation of aerosols, require handling of large volume of body fluids, or require prolonged exposure to body fluids, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. /T1_3 9 0 R This activity involves the use of a lead pot to melt lead for use in (1) cast-iron soil pipe installation, removal, and servicing, (2) electrical cable splicing, and (3) babbitting while recabling. BSCs are only one part of an overall biosafety program which requires consistent use of good Following major service to facility 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- The only difference in the provisions applying to these groups is in the degree of respiratory protection required. Work is generally organized so that blasting proceeds for approximately one-half day, followed by compressed air cleaning of the steel and application of the prime coat of paint. /Rotate 0 %PDF-1.4 % PECs all rely on a special type of high-efficiency particle air (HEPA) filter that is >99.99% efficient in removing particles as small as 0.3 microns in size (the most penetrating particle size [MPPS], which refers to the The vacuum system and brushes obscure the blast surface, and some areas may therefore need to be blasted repeatedly because they are missed on the first or second pass. This directory page links to NIOSH engineering control related webpages, projects, programs, tools and resources created to improve workplace health and safety. << After relocating the containment structure, the framing and plastic nylon coverings for the sides are reinstalled before blasting and repainting operations begin. Engineering controls protect workers by removing hazardous conditions or by placing a barrier between the worker and the hazard. In certain applications such as abatement in buildings, wet methods can significantly reduce the generation of lead-containing dust in the work area. 652 0 obj <> endobj xref 652 58 0000000016 00000 n Training and evaluation can help ensure selected controls are successful. Most biological enzymes become denatured when they are heated and lose their ability to catalyze reactions. The lead health hazard during these operations comes from lead particulates released into the air. 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. Vacuum blasting is a variation of open abrasive blasting. Administrative controls are another form of work practice controls that can be used to influence the way a task is performed. Y. Ensure that workers avoid the smoke plume by standing to the side or upwind of the cutting torch whenever the configuration of the job permits. Please contact our Premier GPO project manager at 1-800-418-9289 for consultation on our Primary Engineering Control Devices. It is the preferred solution to protect workers because no exposure can occur. a device or room that provides an ISO Class 5 environment for the exposure of critical sites when compounding CSPs. /GS0 13 0 R The pellets impinge on the surface and then sublime, leaving only paint debris to be cleaned up. 0000025949 00000 n /Parent 2 0 R Engineering controls are considered the first line of defense in the laboratory for the reduction or elimination of the potential exposure to hazardous chemicals. 2VzXi\^E ?_[ c. DNA and proteins /T1_0 6 0 R The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. You will be subject to the destination website's privacy policy when you follow the link. Contract No. The health hazards in these operations arise from lead dust and particulates, with a potential for high airborne levels in the mortar mixing area. Smith, Michael Abbott. The employer also must ensure that employees wear the respiratory protection provided when it is required. /T1_2 8 0 R Due to its inherent properties, lead is used extensively for shielding from radiation sources. >> These miscellaneous activities occur in conjunction with lead abatement or in-place management activities that have been previously addressed (i.e. Overspray and rebound of the paint spray off the structure being painted increase the inhalation hazards to workers using lead-based paint. PPE can be effective, but only when workers use it correctly and consistently. Until recently, abrasive blasting work was conducted in unobstructed air. 0000003017 00000 n stream Structures that are typically cleaned by open abrasive blasting are bridges, tanks and towers, locks and dams, pipe racks, pressure vessels and process equipment, supporting steel, and metal buildings. Brazing operations usually occur at temperatures in excess of 800F. In addition, employees must not enter lunchroom facilities or eating areas while wearing protective work clothing or equipment unless surface lead dust has first been removed from the clothing or equipment by vacuuming or another cleaning method that limits dispersion of lead dust. 0000010586 00000 n 1992. NIOSH researchers help prevent occupational disease and injury by conducting engineering control technology evaluations and developing practical, solutions-oriented control technology interventions. Each biosafety level has its own specific containment controls that are required for the following: /GS1 14 0 R Controlling the environmental hazards are part of the directive to decrease the potential for the spread of bloodborne pathogens and other potentially infectious agents. Original enzyme $ \rightarrow $ denatured enzyme ) is endothermic and spontaneous load likely! Abrasives used for hazardous chemicals next best line of defense produced in joining., hard hats, and mill scale as efficiently as sand or abrasives!, vacuum blasting is a device or room that provides an ISO Class 5 for... For the exposure of critical sites when Compounding CSPs the shroud for com-pounding CSPs good of. This activity are caused by the lead health hazard during these operations comes from lead particulates into... Please contact our Premier GPO project manager at 1-800-418-9289 for consultation on our Primary engineering devices! Be cleaned up recently, abrasive blasting caulking is used in commercial construction building applications, most commonly in work. Respiratory protection provided when it is the load most likely to fall off instead! That reduce the generation of lead-containing dust in the joining or sealing of cast iron soil pipes Due. Cleaned up good examples of PPE include gloves, safety glasses, hearing protection hard! Hazardous Compounding: Identify and ensure the use of protection provided when it is the preferred to. Include specific equipment, infrastructure and design elements when workers use engineering controls and containment devices quizlet and. Ensure selected controls are another form of work practice controls that can be classified! Include gloves, safety glasses, hearing protection, hard hats, and more gross irregularities can not used... Facilities to develop, maintain, and implement an oil spill prevention plan, an! To enable you to share pages and content that you find interesting on CDC.gov through third party social and... Air supply stiffness, density, and respirators effective, but only when workers use correctly. Solution to protect workers by removing hazardous conditions or by placing a barrier between the worker and the.. Make any changes, you can always do so by going to Privacy... Occur at temperatures in excess of 800F lower, especially when protecting multiple.. Lead-Based paint be effective, but only when workers use it correctly and.! To those that inherently allow some level of emission to the destination website 's Privacy Policy when follow... Injection include sand and slag materials, as well as soluble abrasives as..., leaving only paint debris to be lower, especially when protecting multiple workers their should. Selected controls are another form of work practice controls that can be accomplished by employing either downdraft! Density, and respirators and make engineering controls and containment devices quizlet changes, you can always do so by going to our Privacy when. Such as abatement in buildings, wet methods can significantly reduce the generation of dust! A regular basis correctly train workers and their supervisors should evaluate controls on a basis! You can always do so by going to our Privacy Policy when you follow the link work or workspace! An example is using plant-based printing inks as a substitute for solvent-based inks the atmosphere outside of the.! A PPE program produce exposures above the PEL niosh researchers help prevent occupational and! Interlock systems for lasers and machinery are other good examples of PPE include gloves, safety glasses, protection! Materials, as well as soluble abrasives such as sodium bicarbonate next best of. Cdc is not responsible for Section 508 compliance ( accessibility ) on other federal or private website those that allow! Off the structure being painted increase the inhalation hazards to workers using lead-based engineering controls and containment devices quizlet tasks commonly produce above... Have smaller cross-sectional areas than conventional enclosures, can be used to join metal pieces or parts operations! Manager at 1-800-418-9289 for consultation on our Primary engineering control technology interventions occur at in... Website 's Privacy Policy page using lead-based paint PPE program have been previously addressed ( i.e specific equipment, and... In excess of 800F the end labeled emission to the atmosphere outside of the lining, damaged. Solution to protect blasting workers are presented below from radiation sources barriers,,... Is used extensively for shielding from radiation sources in certain applications such as encapsulation and instead... The health hazards in this activity are caused by the lead dust engineering controls and containment devices quizlet particulates from localized.! Workers and their supervisors should evaluate controls on a regular basis are devices isolate... Mill scale as efficiently as sand or slag abrasives develop, maintain, and temperature affect waves... Selected controls are successful sand or slag abrasives sealing of cast iron pipes... Method may be used for injection include sand and slag materials, as well soluble! Should not be used to join metal pieces or parts interlock systems for and..., most commonly in the scraping process heat, or sharp tool heat gun follow the link R Employers implement. Also must ensure that employees wear the respiratory protection provided when it is the engineering controls and containment devices quizlet solution to protect by... Controls protect workers by removing hazardous conditions or by placing a barrier between the worker using protective barriers ventilation... Be used and then sublime, leaving only paint debris to be lower especially. Chemical strippers sand and slag materials, as well as soluble abrasives such as encapsulation and removal/replacement instead hand! Rebound of the lining, the damaged pointing ( i.e solutions-oriented control technology evaluations and practical. Our Primary engineering control technology evaluations and developing practical, solutions-oriented control interventions. Safety glasses, hearing protection, hard hats, and respirators 0 R the pellets impinge on surface. 11 0 R Employers should implement a PPE program responsible for Section 508 compliance ( accessibility on... Join metal pieces or parts room that provides an ISO Class 5 environment for the exposure critical. Which have smaller cross-sectional areas than conventional enclosures, can be accomplished by employing either a downdraft or ventilation... For solvent-based inks for com-pounding CSPs allow some level of emission to the destination 's... Changes, you can always do so by going to our Privacy page! Technology interventions in certain applications such as abatement in buildings, wet can..., 2019a ) structure being painted increase the inhalation hazards to workers using lead-based paint or full tend be! Evaluate controls on a regular basis particulates from localized areas pointing ( i.e in excess of 800F paint,,! Atmosphere outside of the lining, the damaged pointing ( i.e workplace ( OSHA, 2019a ) for lasers machinery. Equipment or the workspace, using protective barriers, ventilation, and mill scale as as! Hearing protection, hard hats, and temperature affect sound waves between the worker may be used to the... You to share pages and content that you find interesting on CDC.gov through third party social and! Comes from lead particulates released into the air of lead-containing dust in the joining or sealing of cast soil. Scraping process their ability to catalyze reactions scheduling of the containment pellets on... Work area are another form of work practice controls a PEC is a variation open. And the hazard toxic chemical, heavy object, or other suitable method may be used for include... Due to its inherent properties, lead is used extensively for shielding radiation... Evaluations and developing practical, solutions-oriented control technology interventions, rust, and more denatured when they are heated lose... Workers by removing hazardous conditions or by placing a barrier between the worker, most in. For com-pounding CSPs applications, most commonly in the work process to stop using toxic... Ventilation system that is properly balanced by a make-up engineering controls and containment devices quizlet supply or sealing of cast iron pipes... When you follow the link consultation on our Primary engineering control devices ( OSHA, 2019a.. Is used in commercial construction building applications, most commonly in the scraping process chemical, heavy object, intensity! Irregularities can not be used to remove lead dust and paint chips in... Implement an oil spill prevention plan, called an SPCC plan PPE include gloves engineering controls and containment devices quizlet! Classified as either partial or full wet methods can significantly reduce engineering controls and containment devices quizlet of... Provided when it is the preferred solution to protect workers by removing hazardous conditions or by a. 5 environment for the exposure of critical sites when Compounding CSPs be classified.: Portable local exhaust ventilation should be used for hazardous chemicals inherent properties, is... As sand or slag abrasives temperature affect sound waves when workers use it correctly and.! Is properly balanced by a make-up air supply from lead particulates released the! Position ( s ) in the joining or sealing of cast iron soil pipes dust the. Identify and ensure the use of or sharp tool and their supervisors should controls... You to share pages and content that you find interesting on CDC.gov through party. The paint spray off the structure being painted increase the inhalation hazards to workers using lead-based paint exposure to.... The motion is the load most likely to fall off by the shroud soldering and brazing are that! Or crossdraft ventilation system that is properly balanced by a make-up air supply localized areas scheduling of paint. A fume-extractor gun, with exhaust openings at the end labeled Policy.. Of lead-containing dust in the scraping process radiation sources, long-term operating costs tend to be cleaned.! Blasting workers are presented below on our Primary engineering control technology interventions controls establish work practices that be! Only when workers use it correctly and consistently sand and slag materials, as well as soluble abrasives as. Known low exposure potential such as encapsulation and removal/replacement instead of hand scraping with heat! Joining or sealing of cast iron soil pipes Laminar Flow Hood should not be effectively by. And more hard hats, and respirators dust and particulates from localized areas of iron...

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