Radiological dose Assessment by Means of a Coupled WRF-HYSPLIT Model under Normal Operation of Bushehr Nuclear Power Plant

Document Type : Original Research Paper


1 Faculty of Marine Sciences and Technologies, University of Hormozgan, Hormozgan, Iran

2 Faculty of Environment, University of Tehran, Tehran, Iran

3 Institute of Geophysics, University of Tehran, Iran


In the present work WRF model is used to generate meteorological fields for the HYSPLIT dispersion model. Sensitivity and validation of the WRF model, is conducted by utilizing different combinations of physical parameterization schemes. For this purpose, eight different configurations are examined. Assessment of the predictions of the WRF model is carried out by computing the statistical parameters including correlation coefficient (CC) and root mean square error (RMSE). As an example of the results of the WRF model utilizing proper physical configuration at Bousher syoptic station at 03/01/2005 leads to CC=0.82007 and RMSE=1.91783 for wind speed parameter. Once the proper configuration of the WRF model is obtained, dispersion simulations and annual effective dose for adult age group are carried out by WRF-HYSPLIT coupled model under normal conditions for Bushehr power plant. Simulated annual effective dose for adult age group by the coupled model for the years 2014, 2015 and 2016 are 5.8E-08 Sv/yr, 6.7E-08 Sv/yr and 1.1E-07 Sv/yr respectively. Results show that simulation and prediction of effective dose with coupled WRF-HYSPLIT model are in good agreement with observations and indicates the validity of the simulations. The ratio of predicted annual effective dose to dose limit (1E-04 Sv/yr) for normal operation is obtained less than 0.2 percent (


  1. Atomic Energy Organization of Iran, AEOI (2003). Environmental Report of BNPP-1, Tehran, Iran

    Atomic Energy Organization of Iran, AEOI (2013). Environmental Report-2 of BNPP-1, Tehran, Iran.

    Atomic Energy Organization of Iran, AEOI (2015). Final Safety Analysis Report of BNPP-1, Moscow, Russia.

    Bidokhti, A. A. and Moradi M. (2004). A study of observations on the sea breeze in the Bushehr area. Nivar 30(56-57), 7-31, (in Persian).

    Borge, R., Vassil, A., Del Vas, J. J., Julio, L. and Encarnacion, R. (2008). A comprehensive sensitivity analysis of the WRF model for air quality applications over the Iberian Peninsula. Atmos. Environ., 42, 8560-8574.

    Carrascal, M. D., Puigcerver, M. and Puig, P. (1993). Sensitivity of Gaussian plume model to dispersion specifications. Theor. Appl. Climatol., 48, 147-157.

    Draxler, R. R. and Hess, G. D. (1998). An overview of the HYSPLIT 4 modeling system of trajectories dispersion and deposition. Aust. Meteor. Mag., 47, 295-308.

    Draxler, R. R., Stunder, B., Rolph, G., Stein, A. and Taylor, A. (2017). The HYSPLIT4 user’s guide. NOAA Air Resources Laboratory, Maryland, USA.

    US Environmental Protection Agency, EPA (1993). External exposure to radionuclides in air, water, and soil. EPA 402-R-93-081, Federal Guidance Report No.12, Washington D.C.

    Feyzinezhad, M. and Khamooshy, C. (2004). Atmospheric dispersion modeling in Bushehr nuclear power plant. J. of Nuclear Sci. and Tech., 31, 35-42, (in Persian).

    Bullock, R., Fowler, T., Gotway, J. H., Newman, K., Brown, B. and Jensen T. (2017). Model Evaluation Tools Version 6.1 (METv6.1) User’s Guide Boulder, Colorado, USA.

    Ghader, S., Yazegi, D., Soltanpour, M. and Nemati,

    1. H. (2016, november). On the use of an ensemble forecasting system for prediction of surface wind over the Persian Gulf (paper presented in proceedings of the 12th International Conference on Coasts, Ports and Marine Structures, Tehran, Iran).

    International Atomic Energy Agency, IAEA (1980). Atmospheric dispersion in nuclear power plant siting.Vienna, Austria.

    International Atomic Energy Agency, IAEA (2001). Generic models for use in assessing the impact of discharges of radioactive substances to the environment.Vienna, Austria.

    International Commission on Radiological Protection, ICRP (2006). Assessing dose of the representative person for the purpose of radiation protection of the public and the optimization of radiological protection. broadening the process, ICRP publication, 101a.Ann. ICRP 36 (3).

    International Commission on Radiological Protection, ICRP (1995). Age-dependent doses to the members of the public from intake of radionuclides part 5 compilation of ingestion and inhalation coefficients. ICRP publication, 72.Ann. ICRP 26 (1).

    Komijani, F., Nasrolahi, A., Nazari, N. and Shahrzad, N. (2014). Analysis of the Persian Gulf wind regime using synoptic meteorological stations data. Nivar, 38(84-85), 27-44, (in Persian).

    Layeghi B., Ghader S., Bidokhti, A. A. and Azadi,

    1. (2017). Sensitivity of WRF model simulations to physical parameterization over the Persian Gulf and Oman Sea during summer monsoon. Iranian Journal of Geophysics, 11(1), 1-19, (in Persian).

    Malakooti, H. and Alimohammadi, M. (2014). Study of the sensitivity and path of Gonu storms to the surface fluxes parameterizations of Advanced Hurricane WRF model. Geography and Environmental Hazards, 9, 97-112, (in Persian).

    Malakooti, H., Pakhirehzan, M. and Hassani, V. S. (2016). Observational and synoptic behavior of Shamal wind in the north west coast of Persian Gulf: Bushehr, Iran. Physical Geography Research Quarterly, 48 (1), 22-25.

    Miller, C. W. and Craig, A. (1986). Accuracy of Gaussian plume dispersion model predictions as a function of three atmospheric stability classification calculations. Health Phys., 39, 773-782.

    Pashazadeh, A. M., Aghajani, M., Nabipour, I. and Assadi, M. (2014). Annual effective dose from environmental gamma radiation in Bushehr city. Iran J. Environ Healt., 12(4), 2-4.

    Pasquill, F. (1974). Atmospheric Diffusion. 2nd ed. (New York: Halstead Press).

    Pasquill, F. and Smith, F.B. (1983). Atmospheric diffusion. (New York: Wiley).

    Raisali, G., Davilu, H., Haghighishad, A., Khodadadi, R. and Sabet, M. (2006). Calculation of total effective dose equivalent and collective dose in the event of a loca in Bushehr nuclear power plant. Radiat. Prot. Dosim., 121(4), 382-390.

    Schnelle, K. B. and Dey, P. R. (1999). Atmospheric dispersion modelling compliance guide. (Europe: McGraw-Hill).

    Shrivastava, R., Dash, S. K., Oza, R. B. and Hegde, M. N. (2015). Evaluation of parameterization schemes in the weather research and forecasting (WRF) model: A case study for the Kaiga nuclear power plant site. J. Annals of Nuc. Energy, 75, 693- 702.

    Slaper, H., Blaauboer, R. O. and Eggink, G. J. (1994). A risk assessment method for accidental releases from nuclear power plants in europe. national institute of public health and environmental protection.

    Smith, J. G. and Simmonds, R. (2009). The methodology for assessing the radiological consequences of routine releases of radionuclides to the environment used in PC-CREAM 08. Health Protection Agency.

    Sohrabi, M., Parsouzi, Z., Amrollahi, R., Khamooshy, C. and Ghasemi, M. (2013). Public exposure from environmental release of radioactive material under normal operation of unit-1 Bushehr nuclear power plant. Ann. Nucl. Energy, 55, 351- 358.

    Sutton, O. G. (1947). The theoretical distribution of airborne pollution from factory chimneys. Q. J. Royal Meteorol. Soc., 73, 426-436.

    Vauquelin, O. and Levy, F. (2000). Evaluation of a Gaussian-modified dispersion model for atmospheric release from the Marcoule nuclear site. Environ. Model Assess., 5, 75-81.

    Wilks, D. S. (2011). Statistical methods in the atmospheric sciences. (London: Academic Press ).

    Wu, Q., Wang, Z., Chen, H., Zhou, W. and Wenig, M. (2012). An evaluation of air quality modeling over the Pearl River Delta during november 2006. Meteorol. Atmos. Phys., 116, 113-132.

     Zali, A., Shamsaei Zafarghandi, M., Feghhi, S. A. and Taherian, A. M. (2017). Public member dose assessment of Bushehr nuclear power plant under normal operation by modeling the fallout from stack using the HYSPLIT atmospheric dispersion model. J. Environ. Radioact., 171, 1-8.