b'RoboVent a packed-bed filter. This is a fairly inexpensive ap- Source capture should be the first line of defense for proach but can be maintenance-intensive, mainly be- metalworking applications that produce oil mist. Ensure cause filters need to be changed frequently. Impinge- that an enclosure is the right size for an application.ment plates or chevron-style pre-filters capture solidsEffective system design starts with an effective hood and keep them from entering a fiber bed filter. Theseto capture and contain oil mist. The better the hood are periodically washed to remove accumulated solids. design, the less airflow is needed to capture oil mist, A number of questions should be answered whenwhich ultimately requires less energy. An optimal sys-designing a system: tem design minimizes static pressure so more air can What processes are you using? be moved with less energy.Are the mists thermally or mechanically generated? Ductwork design is an important consideration re-What type of metalworking fluid are you using? lated to system design. Improper duct design and in-What is the concentration of oil mists in the facilityadequate airflow can allow mist to coalesce on the or enclosure? sides and bottoms of ducts. For some types of lubri-What is the total volume of mist produced during acants, this may be a fire hazard. Liquids that accumu-shift? late in ductwork and drip from seams also can create a Can your processes be enclosed easily? significant safety hazard.What is the total volume of air that must be moved? Vaporized oil can cause violent fires that rapidly Is your overall goal to comply with OSHA or NIOSH/ spread. For this reason, look for systems with built-in ACGIH health recommendations? fire suppressant technology.CTEScientific Cutting Tools BoOTH# 475 Did you know we make over 7,000 products?Port & Cavity Single Point Thread Mills Indexable Tools Specialty End MillsRosan, AS5202, MS16142, ISO6149, Grooving, boring, and threading tools UN, UNJ, ISO Metric, BSPP/BSPT, PCD/CBN, Flat Top & AlTiN coated inserts Helical chamfer millsParker, Hydraforce, Sun & Eaton Vickers Mini sizes from.015 minimum bore Acme, Stub Acme, NPT/NPTF Right-handed & left-handed styles Bestselling engraving toolsSizes #00-120 UN & M1.2 x .20 mm Triangle or diamond-shaped inserts Double sided corner rounderwww.sct-usa.com sales@sct-usa.com 805.584.9495 800.383.2244 | Technical Assistance is Available ctemag.com/cteguide.com55ShopSafety.indd 55 3/16/20 4:56 PM'