Environmental and effluent monitoring at ANSTO sites, 2006-2007

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dc.contributor.authorHoffmann, ELen_AU
dc.contributor.authorLoosz, Ten_AU
dc.contributor.authorFerris, JMen_AU
dc.date.accessioned2009-02-19T03:42:56Zen_AU
dc.date.accessioned2010-04-30T04:43:39Zen_AU
dc.date.available2009-02-19T03:42:56Zen_AU
dc.date.available2010-04-30T04:43:39Zen_AU
dc.date.issued2008-03en_AU
dc.date.statistics2008-03en_AU
dc.description.abstractThis report presents the results of ANSTO’s environmental and effluent monitoring at the Lucas Heights Science and Technology Centre (LHSTC) and the National Medical Cyclotron (NMC) sites, from July 2006 to June 2007. Estimated effective doses to the members of the public potentially affected by routine airborne emissions from the LHSTC were lower than in previous years due to the closure of the HIFAR research reactor. The maximum potential off-site dose of 0.002 mSv/year was 10% of the As Low As Reasonably Achievable (ALARA) objective of 0.02 mSv/year, and much lower than the public dose limit of 1 mSv/year that is recommended by the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA). The effective doses to the critical group potentially exposed to routine liquid effluent releases from the LHSTC have been realistically assessed at less than 25% of the estimated doses to the critical group for airborne releases. Based on releases of liquid effluent from the LHSTC during 2006-07, a radiological risk assessment was conducted for marine biota in the receiving environment at Potter Point. The possible dose-rates to various species of marine biota were evaluated against international criteria recommended for the protection of biota from radiological hazards. In all cases it was concluded that the radiological risk to marine biota from ANSTO’s effluent releases was negligible. The median tritium concentrations detected in groundwater and surface waters at the LHSTC were typically less than 2% of those set out in the Australian Drinking Water Guidelines. The airborne emissions from the NMC were below the ARPANSA-approved notification levels. Results of environmental monitoring at both ANSTO sites confirm that the facilities continue to be operated well within regulatory limits. ANSTO’s routine operations at the LHSTC and NMC make only a very small addition to the natural background radiation dose of approximately 1.5 mSv/year experienced by members of the Australian public.en_AU
dc.identifier.citationHoffmann, E. L., Loosz, T., & Ferris, J. M. (2008). Environmental and effluent monitoring at ansto sites, 2006-2007 (ANSTO/E-762). Lucas Heights, NSW: Australian Nuclear Science and Technology Organisation.en_AU
dc.identifier.govdoc997en_AU
dc.identifier.isbn1921268018en_AU
dc.identifier.issn1030-7745en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1269en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.relation.ispartofseriesANSTO External Reportsen_AU
dc.relation.ispartofseriesANSTO-E-762en_AU
dc.subjectEnvironmental impactsen_AU
dc.subjectRadioactive effluentsen_AU
dc.subjectANSTOen_AU
dc.subjectWater qualityen_AU
dc.titleEnvironmental and effluent monitoring at ANSTO sites, 2006-2007en_AU
dc.typeExternal Reporten_AU
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