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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. - PowerPoint PPT Presentation
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Plant Engineering / Corporate Metrology
© 3M 2007. All Rights Reserved.
Laboratory/ Process Safety Ventilation Program By Tom Crotty
Metrology With Results Bringing process safety, energy conservation
and data collection together.
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Plant Engineering / Corporate Metrology
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
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Plant Engineering / Corporate Metrology
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
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Plant Engineering / Corporate Metrology
Process to review and make changes
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Plant Engineering / Corporate Metrology
Types of systems and how many on site
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Plant Engineering / Corporate Metrology
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
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Plant Engineering / Corporate Metrology
Laboratory Ventilation Fume Hood Vertical Sash
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Plant Engineering / Corporate Metrology
Laboratory Ventilation Fume Hood Horizontal Sash
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Plant Engineering / Corporate Metrology
Walk In Laboratory Ventilation Fume Hood
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Plant Engineering / Corporate Metrology
Flanged, Moveable Fume Extractors Some manufactured systems types: Nederman,
Plymovent, Torit, and Micro-Air.
non-flanged ventilation, “elephant trunks”
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Plant Engineering / Corporate Metrology
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.
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Plant Engineering / Corporate Metrology
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”
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Plant Engineering / Corporate Metrology
Oven - Indirect Side Ventilation
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Plant Engineering / Corporate Metrology
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
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Plant Engineering / Corporate Metrology
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
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Plant Engineering / Corporate Metrology
Setting Specifications - Base line FPM
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ANSI/ASHRAE 110 (1995)
For 3MHoods 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).
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Plant Engineering / Corporate Metrology
Ventilation testing kit
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•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
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Plant Engineering / Corporate Metrology
TSI 8345 Velocity Meter calibration
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Plant Engineering / Corporate Metrology
TSI 8345 Traceability
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Plant Engineering / Corporate Metrology
TSI 8345 Uncertainty
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Plant Engineering / Corporate Metrology
Decommissioning of Systems
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Plant Engineering / Corporate Metrology
Online information for employees
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Plant Engineering / Corporate Metrology
General Employee Training -COMBO
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Plant Engineering / Corporate Metrology
General Employee Training -COMBO
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Plant Engineering / Corporate Metrology
General Employee Training -COMBO
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Plant Engineering / Corporate Metrology
Thank You!Any Questions?
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Plant Engineering / Corporate Metrology
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
© 3M 2007. All Rights Reserved.
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