Engineering Manual o.. - HVAC.Amickracing

INDOOR AIR QUALITY FUNDAMENTALSSick Building Syndrome (SBS): A term used to refer to thecondition in which a majority of building occupantsexperience a variety of health and/or comfort effectslinked to time spent in a particular building, but whereno specific illness or causative agent can be identified.Symptoms often include headaches, eye irritation, andrespiratory irritation.Sink: A material with the property of absorbing a chemical orpollutant with the potential of subsequent reemission;sometimes called a sponge.Source control: A preventive strategy for reducing airbornecontaminant levels through the removal of the materialor activity generating the pollutants.Stressor: Any biological, chemical physical psychological, orsocial factor that contributes to a complaint.Threshold: The contaminant dose or exposure level belowwhich there is no expected significant effect.Total Volatile Organic Compounds (TVOCs): A measurerepresenting the sum of all VOCs present in the air.Toxicity: The nature and degree of a given agent’s adverseeffects on living organisms.Volatile Organic Compound (VOC): One of a class ofchemical components that contain one or more carbonatoms and are volatile at room temperature and normalatmospheric pressure. In indoor air, VOCs aregenerated by such sources as tobacco smoke, buildingproducts, furnishings, cleaning materials, solvents,polishes, cosmetics, deodorizers, and office supplies.ABBREVIATIONSThe following abbreviations are used throughout this sectionin the text and drawings.AHU — Air Handling UnitASHRAE — American Society of Heating,Refrigerating and Air ConditioningEngineersANSI — American National Standards InstituteBOCA — Building Owners and CodeAdministratorsBMS — Building Management SystemDNR — Department of Natural ResourcesC — CelsiusCDC — Center for Disease ControlCO — Carbon monoxideCO2 — Carbon dioxideDOP — Dioctyl phthalateEA — Exhaust AirETS — Environmental Tobacco SmokeHCHO — FormaldehydeHEPA — High Efficiency Particulate FilterEPA — Environmental Pollution AgencyIAQ — Indoor Air QualityIDLH — Immediately Dangerous to Life andHealthL/s — Liters per secondMA — Mixed AirMCS — Multiple Chemical SensitivitiesMSDS — Materials Safety Data SheetsNAAQ — National Ambient Air Quality StandardnCi/m 3 — Nanocuries per cubic meterNIOSH — National Institute of OccupationalSafety & HealthNO2 — Nitrogen DioxideNRC — Nuclear Regulatory CommissionO3 — OzoneOA — Outdoor AirOSHA — Occupational Safety and Health Agency4-PC — 4-PhenylcyclohexenePAH — Polycyclic Aromatic HydrocarbonsPb — LeadPEL — Permissible Exposure LimitPMV — Predicted Mean Voteppb — Parts per billionppm — Parts per millionPHD — Public Health DepartmentRA — Return AirRH — Relative HumidityRSP — Respirable Suspended ParticlesSBC — Southern Building CodeSA — Supply AirSO2 — Sulfur DioxideSBC — Southern Building Code OfficialsSBS — Sick Building SyndromeSP — Supply PressureSTEL — Short Term Exposure LimitSMACNA — Sheet Metal and Air ConditioningContractors National AssociationTLV — Threshold Limit ValueTSP — Total Suspended ParticulatesTVOC — Total Volatile Organic CompoundsUBC — Uniform Building Codeµg/m 3 — Micrograms per cubic meterVAV — Variable Air VolumeVOC — Volatile Organic CompoundENGINEERING MANUAL OF AUTOMATIC CONTROL153