Measurements of power plant plume dispersion in hilly terrain

Conference · Wed Jun 01 04:00:00 EDT 1983 · Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States)

OSTI ID:6808627

Dittenhoefer, A C

A field program involving the airborne collection of SF/sub 6/ released from the Sammis Power Plant was conducted to investigate the effects of hilly terrain on plume dispersion. Observed plume dispersion parameters were compared to the P-G coefficients modified to account for plume sampling time and the buoyant entrainment of ambient air during plume rise. The modified horizontal and vertical P-G dispersion coefficients typically ranged from 1.2-2.0 and 1.0-1.4 times the standard P-G coefficients, respectively. The observed crosswind dispersion coefficients were found to agree quite well with the modified P-G values using an onsite stability categorization scheme that incorporated local terrain influences on cloud cover and horizontal wind fluctuations. The standard Pasquill-Turner stability classification method using NWS data at Pittsburgh, located 36 km from the Sammis Plant in flatter terrain, predicted generally lower horizontal dispersion estimates which did not correlate well with the observed values. The observed and predicted vertical dispersion coefficients exhibited very poor correlation. For stability classes D and E, the mean values of the observed and modified P-G horizontal and vertical coefficients were quite similar.

• Research Organization: Enviroplan, Inc. West Orange, New Jersey
• OSTI ID: 6808627
• Report Number(s): CONF-830617-
• Conference Information: Journal Name: Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States) Journal Volume: 83-47.2
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CHALCOGENIDES
CLOUD COVER
COMPLEX TERRAIN
DIFFUSION
ENVIRONMENTAL TRANSPORT
FEDERAL REGION III
FLUORIDES
FLUORINE COMPOUNDS
FORECASTING
FOSSIL-FUEL POWER PLANTS
HALIDES
HALOGEN COMPOUNDS
ISOTOPE APPLICATIONS
MASS TRANSFER
METEOROLOGY
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PENNSYLVANIA
PLUMES
POLLUTION
POWER PLANTS
SAMPLING
STABILITY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR FLUORIDES
SULFUR OXIDES
THERMAL POWER PLANTS
TOPOGRAPHY
TRACER TECHNIQUES
USA
WIND