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Plant Engineering / Corporate Metrology

Laboratory/ Process Safety Ventilation Program

Metrology With Results

Bringing process safety, energy conservation and data collection together .

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

 Plant Engineering / Corporate Metrology 3M Corporate Headquarters Campus Campus = 425 acres, 41 buildings, 8.2 million square feet 

Office space

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Research and development Full scale product testing Pilot process lines Manufacturing

Plant Engineering / Corporate Metrology Process to review and make changes

Plant Engineering / Corporate Metrology Types of systems and how many on site

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

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Biological Safety cabinets

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HEPA Rooms, Tables, Cabinets, Filter Systems Environmental Chambers, Rooms Re-circulating Air Systems

Plant Engineering / Corporate Metrology Laboratory Ventilation Fume Hood Vertical Sash

Plant Engineering / Corporate Metrology Laboratory Ventilation Fume Hood Horizontal Sash

Plant Engineering / Corporate Metrology Walk In Laboratory Ventilation Fume Hood

Plant Engineering / Corporate Metrology Flanged, Moveable Fume Extractors  Some manufactured systems types: Nederman, Plymovent, Torit, and Micro-Air.

 non-flanged ventilation, “elephant trunks”

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 .

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

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Interim (low): orange sticker for systems between 50-200 fpm, can still use during repair Fail: red sticker stating “Do Not Use”

Plant Engineering / Corporate Metrology Oven - Indirect Side Ventilation

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.

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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

Plant Engineering / Corporate Metrology 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).

Plant Engineering / Corporate Metrology 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

Plant Engineering / Corporate Metrology TSI 8345 Velocity Meter calibration

Plant Engineering / Corporate Metrology TSI 8345 Traceability

Plant Engineering / Corporate Metrology TSI 8345 Uncertainty

Plant Engineering / Corporate Metrology Decommissioning of Systems

Plant Engineering / Corporate Metrology Online information for employees

Plant Engineering / Corporate Metrology General Employee Training -COMBO

Plant Engineering / Corporate Metrology Any Questions?

Thank You!

 Plant Engineering / Corporate Metrology References ACGIH (February 17, 2004) 25 Recommended Practice. ISBN# 1-882417-52-6, Publication #2094 Cincinnati, Ohio th Edition of Industrial Ventilation: A Manual of  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.%20 UL%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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Laboratory/ Process Safety Ventilation Program

Metrology With Results

Ventilation Systems Covered

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