Standards and Codes Experience Industry vs. Schools/Offices.

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Presentation transcript:

Standards and Codes Experience Industry vs. Schools/Offices

Standards or recommendations? What “standards”? OSHAASHRAE ACGIHOBBC NIOSHBOCA (Bldg. Officials Code Admin.) EPAHUD ICC = International Code Council (Mechanical Code) LEED = Leadership in Energy and Environmental Design

Risk rankings

21 st Century Science & Technology magazine To Control Malaria, We Need DDT! “Neither case detection and treatment, nor use of insecticide-treated nets will result in dramatic reductions of malaria.” Presentation by Donald R. Roberts, Ph.D., Professor of Tropical Public Health at the Uniformed Services University of the Health Sciences in Bethesda, Maryland. His views do not represent the official position of the University, the Department of Defense, or the U.S. Government.

21 st Century Science & Technology magazine Rural malaria was a major public health problem prior to the mid-1940s, even in the United States. With the advent of DDT, the era of uncontrolled malaria ended, followed by decades of dramatic control or elimination of both urban and rural malaria. Unfortunately, those marvelous achievements were lost as countries complied with international pressures to abandon DDT and house spray programs. (Full text from Fall 2002 issue 21st Century)

OSHA and ACGIH (PELs and TLVs) Based on health effects to healthy adults of exposures for eight hour days over a working lifetime Issue: relevance to office setting where focus may be 1) comfort or 2) desire for absence of unusual sensory stimuli?

OSHA Occupational Safety and Health Administration o IAQ standard on hold o Nothing new o Record-keeping is emphasized o Addressed in OSHA technical manual o Public Emp. = Under PERRP

Section III: Chapter 2 OSHA Technical Manual Indoor Air Quality Investigation

NIOSH National Institute for Occupational Safety and Health o Research arm for OSHA o HHE* provide unique, valuable info on building related illnesses o Provides useful specific guidance -- e.g., on CO 2 levels even though recommendations only *Health Hazard Evaluations

EPA Environmental Protection Agency o National Ambient Air Quality Standards (six contaminants) o Set in order to protect the public 24 hours a day o Issue: relevance for office IAQ problems?

(Photo courtesy of BWC Employee – Tim Fiorilli)

IAQ milestones 1976Legionnaires Outbreak 1987NIOSH Guideline for IAQ Investigations 1989ACGIH Bioaerosol Assessment & Control (rev.1999) 1991EPA Building Air Quality 1993NYC Guidelines to Ass. & Rem. Stachy 1993American IAQ Council Founded 1994Pulmonary Hemosiderosis in Cleveland 1994IAQ Association Founded 1995EPA Tools for Schools (rev. 2000) 2000NYC Guidelines to Ass. & Rem. Fungi in IAQ 2001EPA Mold Rem. In Schools & Com. Bldgs IICRC S520 Stds & Ref Guide for Prof. Mold Rem ASHRAE Std ASHRAE Std (

National Ambient Air Quality Standard

Comparing industrial and IAQ limits

ASHRAE American Society of Heating, Refrigerating, and Air-Conditioning Engineers Developed specifically for the indoors o Thermal comfort guidelines ( ) See BAQ, p o Ventilation standard ( ) See BAQ, p. 137

ASHRAE “Thermal Environmental Conditions for Human Occupancy” o Temperature range: F in winter (1.0 Clo) F in summer (0.5 Clo) o Relative humidity range: Maintain at or below humidity ratio of [Ranges from 85%(67deg.) – 55%(80 deg.)] No lower limit stated o Maximum air speed of 40 fpm

ASHRAE 55-<2004

ASHRAE

OSHA Technical Manual (OTM) Section III: Health Hazards CHAPTER 1. POLYMER MATRIX MATERIALS: ADVANCED COMPOSITES CHAPTER 2. INDOOR AIR QUALITY INVESTIGATION CHAPTER 3. VENTILATION INVESTIGATION CHAPTER 4. HEAT STRESS CHAPTER 5. NOISE AND HEARING CONSERVATION CHAPTER 6. LASER HAZARDS CHAPTER 7. LEGIONNAIRE'S DISEASE CHAPTER 1. POLYMER MATRIX MATERIALS: ADVANCED COMPOSITES CHAPTER 2. INDOOR AIR QUALITY INVESTIGATION CHAPTER 3. VENTILATION INVESTIGATION CHAPTER 4. HEAT STRESS CHAPTER 5. NOISE AND HEARING CONSERVATION CHAPTER 6. LASER HAZARDS CHAPTER 7. LEGIONNAIRE'S DISEASE

V. RECOMMENDATIONS FOR THE EMPLOYER. o The following are general recommendations which, where relevant, should be standard procedure. If followed, they will help prevent or alleviate many indoor air-quality problems. A. ENGINEERING RECOMMENDATIONS. o 3. Air Treatment is the removal of air contaminants and/or the control of room temperature and humidity. Recommendations for air treatment include: The use of filtration, electronic cleaners, chemical treatment with activated charcoal or other sorbents; Humidity control in the range of 20%-60%; Temperature control in the range of F.

Outdoor temperature/Indoor relative humidity recommendation maximums +20 o F.35% +10 o F.30% 0 o F.25% -10 o F.20% -20 o F.15% Source: Anne Field, Extension Specialist, Emeritus, with reference from the Association for Home Appliance Manufacturers (

ASHRAE “Ventilation for Acceptable Indoor Air Quality” CFM refers to outside air supplied per occupant

ASHRAE “Ventilation for Acceptable Indoor Air Quality” Defines acceptable indoor air quality as: “air in which there are no known contaminants at harmful concentrations as determined by cognizant authorities and with which a substantial majority (80% or more) of the people exposed do not express dissatisfaction.”

ASHRAE American Society of Heating, Refrigerating, and Air- Conditioning Engineers Standard: Non-smoking area: Smoking area: CFM50 CFM CFM20 CFM /99/ CFM60 CFM & 07Vbz = RpPz+RaAz6.2.9 no # CFM refers to OUTSIDE air supplied per person Fresh air per occupant

ASHRAE V bz = R p x P z + R a x A z Rate required per person Population per zone Rate required per area Area per zone

ASHRAE Outdoor Air Requirements ( ) LocationCfm/person Office space17 Conference rooms6 Classrooms13-15 Libraries15

ASHRAE Guidelines for carbon dioxide Instantaneous level Outdoor air = parts per million (ppm) People exhale 2-3% CO2 1% = 10,000 ppm 1000 ppm guidance level based on 300 ppm outdoor level

IAQ indicators table (room#)

MERV (ASHRAE 52.2) (Minimum Efficiency Reporting Value) o Highly controlled laboratory testing not dust spot o Minimum efficiency instead of average o Filters ability to remove particles of a specific size

US Department of Housing & Urban Development (HUD) Source emission standard o Product standard limiting formaldehyde exposures from pressed wood products in mobile & manufactured homes o <0.2 PPM plywood o <0.3 PPM particleboard o Goal: indoor HCHO exposures <0.4 PPM, but TLV is now 0.3 PPM!

Ohio Model Building Codes Ohio Basic Building Code (OBBC) Uses BOCA’s Nat’l Mechanical Code (Article 16, “Ventilation Air”) Article 16 [Ohio Admin. Code 4101:2-4-01] “Ventilation Air (Mechanical)”

IAQ Tools for Schools Action Kit o IAQ Coordinator’s Guide o IAQ Coordinator’s Forms o IAQ Backgrounder o IAQ Problem Solving Wheel o IAQ Checklists Teachers Administrative Staff Health Officer Building Maintenance Food Services Renovation and Repair Video (Taking Action & Vent. Basics)

Mold Remediation in Schools and Commercial Buildings o EPA Doc. 402-K March 2001 o Invest./Eval./Remediation of moisture/mold o Introduction to molds o Resources and references I-BEAM = CD on IAQ Bldg. and Educ. Assess. Model o Interactive program of IAQ/energy and Bldg. Economics o Establish/Train/Diagnose/Document IAQ issues

Additional resources American Lung Association 800-LUNG-USA ACGIH ASHRAE Assoc. of Occ. and Env. Clinics Bldg. Air Quality Alliance Carpet and Rug Institute Division of Safety and Hygiene800-OHIOBWC

EPA IAQ Information Clearinghouse Tool for School Pub.# National Air Duct Cleaning Association National Air Filtration Association National Pesticide Network Ohio Dept. of Health Env. Health Div OSHA (Clev / Col / Tol) Radon Information Hotline

Standards on the Web ansi.org -Amer. Nat. Standards Institute asce.org -Amer. Society of Civil Eng. ashrae.org -Am. Society of Heating Refrig & Air-conditioning Eng. astm.org -Am. Soc. For Testing and Materials bocai.org-Building Officials & Code Administrators International energycodes.org-US Dept. of Energy Bldg. Stds & Guidelines Program epa.gov/iaq/schools - EPA Tools for Schools site icbo.org-International Conference of Building Officials nateval.org-National Evaluation Services, Inc. ncsbcs.org-Nat. Conf. Of States on Bldg. Codes and Stds, Inc. nfpa.org-The National Fire Protection Association nibs.org-National Institute of Building Sciences nist.gov-National Institute of Standards and Technologies nssn.org-National Resource for Global Standards osha.gov-Occupational Safety and Health Administration