ASHRAE 110An Introduction to Laboratory Fume Hood Performance Testing

Topics of DiscussionWhat is a Fume Hood?

Why do we Test Fume Hoods?Brief History of ASHRAE 110

ASHRAE 110: Face Velocity TestingASHRAE 110: Smoke Visualization

ASHRAE 110: Tracer Gas ContainmentASHRAE 110: Test Types

The Proposed Latest Edition of ASHRAE 110Other Fume Hood Performance Tests

A Laboratory Fume Hood is a safety device where

hazardous chemicals can be handled safely while fumes and vapors generated by

these chemicals are exhausted out of the building, when connected to a properly

designed laboratory ventilation system.

What is a Fume Hood?

Speed of the Air is Face Velocity

What is a Fume Hood?

Above all else, laboratory fume hoods are

SAFETY DEVICES.

What is a Fume Hood?

A method of evaluating the fume hood’s ability to contain and exhaust fumes under a set a standard conditions.A means for a comparative analysis of fume hoods.A tool for fume hood manufacturers to use in the design and research & development of fume hoods.A criteria for fume hood procurement.A method to commission and certify fume hood installations. A forensic tool to help identify issues/problems with an installed laboratory fume hood HVAC system.

Why Test Fume Hoods?

What Fume Hood Performance Testing is NOT:As of today, there is no performance test that directly correlates the results of the fume hood performance test with the safety afforded to a fume hood operator. The variables in hood environment (including cross drafts, temperature and pressure fluctuations, activity and traffic in the lab space, hood location, system design), use practices, materials in the hood and hood loading, prevent a direct correlation.

Why Test Fume Hoods?

Brief History of ASHRAE 110Evolved from a research paper by K. J. Caplan and G. W. Knutson, “Laboratory Fume Hoods, A Performance Test”, RP-70, ASHRAE Transactions, 1978.A Test Method that does not define “pass/fail” criteriaFirst published as an ANSI Standard in 1985.Revised in 1995.“2005” version has yet to be published.SPC 110 Committee is actively involved in the laboratory industry.

ASHRAE 110ANSI/ASHRAE 110 Standard

Face Velocity MeasurementSmoke VisualizationTracer Gas Containment

ASHRAE 110: Face VelocityFace Velocity Measurement

Multiple Point Readings to Measure Average Face VelocityMeasurement of Cross DraftsVerification of VAV System Operation and ResponseCalibration of Airflow Monitors

Velocity Velocity ProbeProbe ClampClamp

Microphone Microphone StandStand

ASHRAE 110: Face Velocity

IMAGE FROM WEBSITE: www.SAFELAB.com COURTESY OF DALE HITCHINGS

ASHRAE 110: Smoke VisualizationSmall Volume Smoke Visualization

TiCl4 Smoke Sticks or Bottles

ASHRAE 110: Smoke VisualizationLarge Volume Smoke Visualization

Theatrical Smoke Machine

ASHRAE 110: Tracer Gas TestTracer Gas Containment

SF6 Gas5 minute average escape in PPMGas analyzers measure concentration down to 0.01 PPMThree “static” tests, sash movement effect and perimeter scan

ASHRAE 110: Tracer Gas Test

ASHRAE 110: Test TypesANSI/ASHRAE 110 Method

As Manufactured (AM)As Installed (AI)As Used (AU)

ASHRAE 110: Proposed New VersionHighlights of some proposed changes and additions:

Face Velocity Measurement Shorter Mannequin HeightData CollectionAdditional info in explanatory Appendix ANew Appendix B Diagnostic informationNew Appendix C Sample Test report

Other Fume Hood Performance TestsNIH Test methodUS EPA Test methodPerson as Mannequin variationEN 14175 (European Union)MD 15128 (Canada PWGSC)

If you have any questions, or would like to discuss this further, please do not hesitate to contact me:

Robert DeLuca, Jr. LEED Green Assoc.

Vice Presidentbdelucajr@lab-crafters.com

Lab Crafters, Inc.Lab Crafters, Inc.Ronkonkoma, NY 11779Ronkonkoma, NY 11779Ph: 631.471.7755Ph: 631.471.7755Web: Web: www.labwww.lab--crafters.comcrafters.com

Or Visit us here at Labs21: Booth60/61

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