Equipment and procedures 3 Provide spray guns that minimise paint mist. Special “explosion proof” electrical wiring is required for all wiring within the paint spray booth. 3 Display the spray booth or room ‘clearance time’ clearly. Definitions were added to 516.2 in the 2014 NEC and then removed or revised in the 2017 NEC. [NFPA 1 and 33] Spraying and finishing areas should be posted with clearly visible signage reading “No Smoking” [29 CFR 1910.107(g)(7)] The US Occupational Safety and Health Administration (OSHA) is the primary federal agency responsible for regulating safe spraying operations in the workplace, including air quality, fire control systems, protective equipment, lighting, acceptable levels of substance exposure and the separation of hazardous operations from the rest of the workplace. Interior surfaces must be smooth and easy to clean. Every spray booth constructed in the U.S. that is used in a workplace environment is required to comply with OSHA regulations and standards, so it is important for spray booth owners and operators to understand that regulations are enforceable long after the booth is completed. There are many factors that can influence lighting levels in spray booth application. This is a very large issue that most folks, who are looking at putting a spray booth into their facility, have no idea of what is involved. If you are looking to update yourself on the very latest regulations, as well as how to ensure your workshop is Covid-19 safe, take a look at our updated guide on spray booth regulations. When choosing fixtures yourself, it’s important to know: Paint Spray Booth Risk Assessment According to HSE Legislation. 3 Use a spray booth or room that runs under slight negative pressure to prevent mist leaking into the workshop. For years, Article 516 of the National Electrical Code (NEC)— covering spray applications, dipping and coating processes using flammable liquids, combustible liquids and combustible powders—did not seem to change much, if at all. However, there have been substantial changes in the 2014 and 2017 NECs. 3 Connect the room ventilation to the lighting circuit and incorporate a timed extraction overrun. Regulations have the effect of spelling out the specific requirements of the legislation. ... 5.1 Spray painting inside a spray booth 23 5.2 Spray painting outside a spray booth 24 ... 5.5.2 Electrical equipment for use in spray painting 32 5.6 Work practices 32 5.6.1 Mixing and pouring 33 Each booth must have an independent exhaust system discharging to the exterior. When selecting spray booth lighting, you must think about what you want to achieve and aim to get an even distribution of light in the booth. 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