ANSI/AIHA Z9 ACS Meeting Boston, MA August 22,2010

Lou DiBerardinis MIT

Cambridge, MA

American National Standards Institute

ANSI/AIHA Z9 Representation (examples)

Alliance of American Insurers US Department of the Navy ACGIH NSEMA American Foundrymen’s Society General Motors

American Glovebox Society Harvard University AIHA MIT ASHRAE Norton Company American Welding Society American Petroleum Institute Grinding Wheel Institute American Public Health

Association NIOSH Foundry Equip. Mfg. Association US OSHA US Air Force

ANSI/AIHA Ventilation Standards

Z9.1 - Ventilation and Operation of Open Surface Tanks

Z9.2 - Fundamentals Governing the Design and Operation of Local Exhaust Ventilation Systems

Z9.3 - Spray Finishing Operations – Design Construction and Operation

Z9.4 - Abrasive Blasting Operations – Ventilation and Safe Practices for Fixed Locations

Z9.5 - Laboratory Ventilation

Z9.6 - Exhaust Systems for Grinding, Polishing and Buffing

Z9.7 - Recirculation of Air From Industrial Process Exhaust Systems

Z9.9 - Portable Ventilation Systems (DRAFT)

Z9.10 - Fundamentals Governing the Design and Operation of Dilution Ventilation Systems in Industrial Occupancies

Z9.11 - Laboratory Decommissioning Standard

New ANSI Z9 Standards Under Development

•  Z9.12 Design, Operation and Maintenance of Combustible Dust Collection Systems

•  Z9.13 Design, Operation and Testing of Laminar Flow Fume Hoods

•  Z9.14 Methodology for certifying Biosafety Level 3 Laboratories

ANSI/AIHA Z9.2-2007 Fundamentals Governing the Design

& Operation of Local Exhaust Systems

•  Standard establishes minimum requirements for the commissioning, design, specification, construction, and installation of fixed industrial local exhaust ventilation (LEV) systems used for the reduction and prevention of employee exposure to harmful airborne substances in the industrial environment.

•  Reaffirmed Standard has been approved by ANSI and is available for sale through AIHA.

Sub Committee Chair: Jeff Burton, CIH, CSP, PE IVE, Inc.

Bountiful, UT

ANSI/AIHA Z9.5-2010 Laboratory Ventilation

•  This standard sets forth the requirements for the design and operation of laboratory ventilation systems.

•  Revised standard available now

Sub Committee Chair: Steve Crooks, CIH, CSP RTI International

Research Triangle Park, NC

ANSI/AIHA Z9.7-2007 Recirculation of Air from Industrial Process Exhaust Systems

•  Standard establishes minimum criteria for the design and operation of a re-circulating industrial process exhaust ventilation system used for contaminant control.

•  Describes conditions under which contaminated air from industrial or research operations can be ‘cleaned’ and returned to the work area.

•  Revised standard has been approved by ANSI and is available for sale through AIHA.

Sub Committee Chair: Lou DiBerardinis, CIH, CSP MIT, Cambridge, MA

BSR-AIHA Z9.11 - 2010 Laboratory Decommissioning Standard

•  When laboratories are vacated, all hazardous materials and contamination must be removed and disposed of properly.

•  Provides a roadmap for the decommissioning process of research laboratories that can assist an institution in developing its own Decommissioning Plan.

•  Offers methodology to document, monitor, and verify the decommissioning process including ways to determine acceptable risk given the facilities future use.

Sub Committee Co Chairs: Lou DiBerardinis, CIH, CSP MIT, Cambridge, MA Farhad Mezmaradeh National Institute of Health, Bethesda, MD

Z9.5 Subcommittee Members

•  Steve Crooks, PP&EP, Inc., Subcommittee Chair

•  Jim Coogan, Siemens Building Technologies, Subcommittee Vice Chair

•  D. Jeff Burton, IVE, Inc. •  Lou DiBerardinis, MIT •  Robert A. DeLuca, Scientific Equipment

& Furniture Association •  Dale Hitchings, Hitchings Associates •  Stephan Hauville, ERLAB Inc. •  R.A.(Bob) Henry, Stantec Consulting •  Gerhard Knutson, Knutson Ventilation,

Inc.

•  Ken Kretchman, NC State University •  Stan Lengerich, Eli Lilly & Company •  Charles James McAfee, Raytheon

Missile Systems •  Victor Neuman, Tek-Air Systems •  Paul Pinkston, Prime Air Products

Company •  John M. Price, Northeastern University •  Gordon Sharp, Aircuity, Inc. •  Tom Smith, Exposure Control

Technologies, Inc. •  Mark Tschida, 3M Company •  Doug Walters, American Chemical

Society

Subcommittee member publishing the…1992, 2003 and 2010 standards. 2003 and 2010 standards. 2010 standard.

10 AIHce 2010

Revisions to Z9.5 - 2010

•  Minimum Flow Rate for Laboratory Fume Hoods

•  Performance of Ductless Hoods •  Clarification of some sections •  Re-affirmation of most sections

Minimum Flow Rates for Laboratory Hoods

•  Now range from 150 – 375 ACH in hood •  Roughly 10 – 25 CFM/ft2 •  Guidance on how to select •  Based on both theoretical and

experimental testing

Ductless Hoods

•  Written documentation that manufacturer has approved the specific application

•  Manufacturer provided list of approved chemicals and retention capacities

•  RHC discussion on continuing concerns and test method developments

•  Disposal must be considered in decision to use •  Testing and maintenance

Re-Affirmation

•  Fume Hood Face Velocity •  Air Changes per Hour •  Performance Testing •  Manifolding Acceptability

Clarifications

•  Recirculation of Air •  Space Pressurization •  Exhaust System Classification

Exhaust System Classification

Left Column: Mandate “In cases where Section 510 of the International Mechanical Code applies, designers shall consult the current version of IMC 510 ”

Right Column: Explanation “... building codes based on the IMC define Hazardous Exhaust Systems in a way that sometimes includes laboratory exhaust systems. ... revisions to the IMC make that designation less of a burden. ... the code more readily permits manifolding, and usually eliminates the need for fire suppression. ”

Example review comments

•  Minimum hood flow •  Concern that Std. didn’t use the phrases, “low

flow” or “high performance” •  New appendix covering stack design •  Request for deeper coverage of HClO4 hoods •  One persistent commenter's belief that OSHA

requires routine exposure assessments for hood users

Process for Questions

•  Informal – Contact AIHA – Contact Chair directly –  Informal response

•  Formal – Written to AIHA – Receive formal response

ANSI/AIHA Z9

•  These standards can be purchased from: AIHA at www.aiha.org or (703) 849-8888

•  If you would like to participate or want more information please contact:

AIHA Program Manager, Standards Mili Mavely at (703) 846-0794

mmavely@aiha.org