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Laboratory/ Process Safety Ventilation Program

Laboratory/ Process Safety Ventilation Program. By Tom Crotty. Metrology With Results. Bringing process safety, energy conservation and data collection together. Learning Objectives Ventilation Program. 1. To convey best practices of a ventilation program and the method used for testing.

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Laboratory/ Process Safety Ventilation Program

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  1. Laboratory/ Process Safety Ventilation Program By Tom Crotty Metrology With Results Bringing process safety, energy conservation and data collection together.

  2. Learning Objectives Ventilation Program • 1. To convey best practices of a ventilation program and the method used for testing. • 2. Provide a platform for developing a value added testing program using Metrology. • 3. The participants will be able to replicate a similar program using the reference tools provided in this lecture

  3. 3M Corporate Headquarters Campus • Campus = 425 acres, 41 buildings, 8.2 million square feet • Office space • Research and development • Full scale product testing • Pilot process lines • Manufacturing

  4. Process to review and make changes

  5. Types of systems and how many on site

  6. Ventilation Systems Covered • Laboratory Ventilation hoods • Vertical sash, Horizontal sash, Walk in style • Flexible Flanged trunks • Slot Exhaust • Oven Exhaust • Out of Scope • Biological Safety cabinets • HEPA Rooms, Tables, Cabinets, Filter Systems • Environmental Chambers, Rooms • Re-circulating Air Systems

  7. Laboratory Ventilation Fume Hood Vertical Sash

  8. Laboratory Ventilation Fume Hood Horizontal Sash

  9. Walk In Laboratory Ventilation Fume Hood

  10. Flanged, Moveable Fume Extractors • Some manufactured systems types: Nederman, Plymovent, Torit, and Micro-Air. • non-flanged ventilation, “elephant trunks”

  11. Taking the Face Velocity Reading • Use a calibrated anemometer to take the velocity measurement at the face of the ventilation opening. • Slowly move the probe around the face of the opening until the highest face velocity is reached • Document the highest consistent face velocity.

  12. Flanged, Moveable Fume Extractors Labels • Minimum requirement is 200 fpm face velocity. ~ 600 of these systems at 3M Center • Pass: active hoods must be certified annually with yellow sticker • Interim (low): orange sticker for systems between 50-200 fpm, can still use during repair • Fail: red sticker stating “Do Not Use”

  13. Oven - Indirect Side Ventilation

  14. Oven Standard - Smoke Tube Test • For oven exhaust on the top of the oven: hold the smoke tube parallel to the oven surface in the center of the opening. Discharge a stream of smoke. • For oven exhaust on the side of the oven: hold the smoke tube parallel to the exhaust opening in the center of the opening. Discharge a stream of smoke. • Smoke tube test results descriptions: • Good: No reverse flow observed. Smooth flow into & around the boundaries of the exhaust opening. • Fair: Some reverse flow, not necessarily at the opening. No visible escape of smoke. • Poor: Reverse flow of smoke near openings or lazy flow into the openings along boundaries. Poor performance shows potential for escape of smoke. • Fail: Smoke observed escaping from the duct or box

  15. Slot Exhausts • Yellow label shows the effective capture distance. The blue and white Caution label remind the user to conduct a Hazard Review before start-up. Guidance for safety survey: finding = no sticker or more than 1 year since last certification (need to call *3 to get certified), finding = using ventilation with red failure label or with Caution label

  16. Setting Specifications - Base line FPM ANSI/ASHRAE 110 (1995) • For 3M • Hoods with average face velocities between 80-120 fpm: • Place a sash height indication label on the hood to the right of the sash indicating the sash position that the hood has been certified at (for vertical sashes only).

  17. Ventilation testing kit • TSI Air Velocity Meter Model 8345 • Label Stickers pass/fail • Pens • Do not use ribbon • Tape • Razorblade (in holder) • Replacement blades • Calibration procedure • TSI monitor procedure (for fume hood controls) • Tape measure • Caution Do Not Use Tape

  18. TSI 8345 Velocity Meter calibration

  19. TSI 8345 Traceability

  20. TSI 8345 Uncertainty

  21. Decommissioning of Systems

  22. Online information for employees

  23. General Employee Training -COMBO

  24. General Employee Training -COMBO

  25. General Employee Training -COMBO

  26. Any Questions? Thank You!

  27. References • ACGIH (February 17, 2004) 25th Edition of Industrial Ventilation: A Manual of Recommended Practice. ISBN# 1-882417-52-6, Publication #2094 Cincinnati, Ohio • NSF/ANSI 49 (2008) Bio-safety Cabinetry: Design, Construction, Performance, and Field Certification Tracking Number 49i35r1 Retrieved from website, http://standards.nsf.org/apps/group_public/download.php/3617/49i35%20w.g.%20UL%20and%20annex%20F.pdf • U.S. Department of Labor, OSHA 1910 Occupational Safety and Health Standards 1910.94 (c) (6)(i) Retrieved from web site, http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9734&p_table=standards • ASHRAE Standard 62 (2011) retrieved from website, http://www.ashrae.org/technology/page/132

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