ICRP http://www.icrp.org/index.asp International Commission on Radiological Protection en-gb Sun, 20 May 2018 10:06:27 +0000 ICRP Welcomes New Intern: Sunny Siu http://www.icrp.org/page.asp?id=384 <p> <p>On May 8th, ICRP welcomed Sunny Siu to the Scientific Secretariat.</p> <p>The Canadian Nuclear Safety Commission (CNSC) have graciously provided support to the ICRP Scientific Secretariat team through the professional development program for students and this will be his first four-month rotation in Ottawa.</p> <p>Sunny has prior experience in the Health Physics Department at the McMaster Nuclear Reactor, Hamilton and Darlington&rsquo;s Refurbishment in Radiation Protection at Ontario Power Generation, Bowmanville.</p> <p>From the Windsor, Ontario area, Sunny has traveled throughout the province in his academic and professional career. Studying at McMaster University with a background in Health Physics and special interest in Nuclear Engineering and Reactor Physics, he has one semester left before a BSc in Medical and Health Physics.</p> <p>While at ICRP, Sunny will be assisting with the Scientific Secretariat, performing various tasks alongside the team.</p> <p>Once again, thank you to the CNSC for their partnership, collaboration, and support.</p> <p>Welcome Sunny!</p> </p> Mon, 14 May 2018 17:28:56 +0000 Summary of April 2018 Main Commission Meeting Now Available http://www.icrp.org/admin/Summary%20of%20April%202018%20Main%20Commission%20Meeting%20Quebec%20City.pdf http://www.irpa.net/admin/Summary%20of%20April%202018%20Main%20Commission%20Meeting%20Quebec%20City.pdf Fri, 11 May 2018 19:15:03 +0000 Passing of Former Main Commission Member Rudolf Mikhailovich Aleksakhin http://www.icrp.org/docs/Passing of Former Main Commission Member Rudolf Mikhailovich Aleksakhin.pdf http://www.irpa.net/docs/Passing of Former Main Commission Member Rudolf Mikhailovich Aleksakhin.pdf Wed, 9 May 2018 13:07:09 +0000 First Ever Bo Lindell Medal Awarded to Nicole E Martinez http://www.icrp.org/docs/First Ever Bo Lindell Medal Awarded to Nicole E Martinez.pdf http://www.irpa.net/docs/First Ever Bo Lindell Medal Awarded to Nicole E Martinez.pdf Mon, 7 May 2018 18:20:40 +0000 ICRP and ICRU to Celebrate Respective 90th Anniversaries in Stockholm http://www.icrp.org/docs/invitation-icrp.pdf http://www.irpa.net/docs/invitation-icrp.pdf Fri, 4 May 2018 13:40:14 +0000 Draft Report on Effective Dose Now Available for Public Consulation http://www.icrp.org/page.asp?id=383 <p><span style="font-size: 12px;">The draft report on&nbsp;</span><strong style="font-size: 12px;">The Use of Effective Dose as a Radiological Protection Quantity</strong><span style="font-size: 12px;">&nbsp;is now available for public consultation. We welcome comments from individuals and organisations. The draft document can be downloaded from the <a href="page.asp?id=382">ICRP website</a>. Comments must be submitted through the ICRP website no later than&nbsp;</span><strong style="font-size: 12px;">August 3, 2018</strong><span style="font-size: 12px;">.&nbsp;</span></p> <p><span style="font-size: 12px;">Questions and inquries can be directed towards </span><a style="font-size: 12px; background-color: #ffffff;" href="mailto:kelsey.cloutier@icrp.org">Kelsey Cloutier</a><span style="font-size: 12px;">, Development and Communications Manager.</span></p> <h3>Abstract</h3> <p><span style="font-size: 12px;">The concept of &lsquo;effective dose&rsquo; (E) was developed by ICRP as a risk-adjusted dosimetric quantity for the management of protection against stochastic effects, principally cancer, enabling comparison of planned or received doses with dose limits, dose constraints, and reference levels expressed in the same quantity. Its use allows all radiation exposures 92 from external and internal sources to be considered together and summed, relying on the assumptions of a linear-non-threshold dose-response relationship, equivalence of acute and chronic exposures at low doses or low dose rates, and equivalence of external and internal exposures. Considering exposures incurred by patients during medical procedures, E is of practical value for comparing: doses from different diagnostic examinations and interventional procedures; the use of similar technologies and procedures in different hospitals and countries; and the use of different technologies for the same medical examination, provided that the representative patients or patient populations for which the effective doses are derived are similar with regard to age and sex. As stated in the 2007 Recommendations (ICRP, 2007a), &ldquo;&hellip; risk assessment for medical diagnosis and treatment &hellip; is best evaluated using appropriate risk values for the individual tissues at risk and for the age and sex distribution of the individuals undergoing the medical procedures&rdquo;. Publication 103 (ICRP, 2007a) provides detailed explanation of the purpose and use of E and of equivalent dose to individual organs and tissues. However, questions have arisen regarding practical applications, highlighting a clear need for further guidance on specific aspects. This publication draws on the explanations provided in Publication 103 and emphasises that E has proved a valuable and robust quantity for use in the optimisation of protection, to set dose criteria and verify compliance. Conclusions are drawn that: a) Equivalent dose (H) is not required as a protection quantity. It will be more appropriate for limits for the avoidance of tissue reactions for the hands and feet, lens of the eye, and skin, to be set in terms of absorbed dose (Gy) rather than equivalent dose (Sv). b) While risk assessments for individuals based on organ/tissue doses and specific dose-risk models make best use of scientific knowledge, E may be used as an approximate indicator of possible risk, recognising that this is a pragmatic, but unintended, application of effective dose. It is made clear in this report that while doses incurred at low levels of exposure may be measured or assessed with reasonable accuracy, the associated risks are increasingly uncertain at lower doses. However, bearing in mind the uncertainties associated with risk projection to low doses, E may be considered as an approximate indicator of possible risk, with the additional consideration of variation in risk with age, sex and population group. Use of E in this way is not a substitute for risk analysis using best estimates of organ/tissue doses, appropriate information on the relative effectiveness of different radiation types, and age-, sex- and population-specific risk factors, with consideration of uncertainties.&nbsp;</span></p> Thu, 26 Apr 2018 17:48:00 +0000 ICRP Welcomes New Assistant Scientific Secretary Chunsheng Li http://www.icrp.org/page.asp?id=381 <p>Effective April 3, 2018, Dr Chunsheng Li joined Dr Hiroki Fujita as an additional Scientific Secretary at ICRP.</p> <p>Our kindest thanks to Health Canada (HC) for providing this resource.&nbsp; Dr Li joins ICRP from the Radiation Protection Bureau of HC.</p> <p>Chunsheng received his PhD in Radiochemsitry in 1998 from the Chinese Acadamey of Sciences.&nbsp; He has been working for Health Canada since 1999 as a scientiest on monitoring, dosimetry and medical management of internal radiation contamination.&nbsp; Additionally, Chunsheng has been an adjunct professor at Carleton University in Ottawa since 2010.&nbsp;</p> <p><span style="font-size: 10pt;">ICRP is fortunate to have Chunsheng's many years of experience and dedication to the field Radiolgoical Protection.&nbsp; Welcome Chunsheng!</span></p> <p><span style="font-size: 10pt;">Questions and inquiries can be directed to <a href="mailto:kelsey.cloutier@icrp,org">Kelsey Cloutier</a>, Develomepment and Comminucations Manager for ICRP.</span></p> <div></div> Mon, 9 Apr 2018 17:50:31 +0000 Passing of Former Main Commission Member Roger Berry http://www.icrp.org/docs/Passing of Former Main Commission Member Roger Berry.pdf http://www.irpa.net/docs/Passing of Former Main Commission Member Roger Berry.pdf Tue, 3 Apr 2018 19:05:51 +0000 Passing of Former Main Commission Member Julian Liniecki http://www.icrp.org/docs/Passing of Former Main Commission Member Julian Liniecki.pdf http://www.irpa.net/docs/Passing of Former Main Commission Member Julian Liniecki.pdf Mon, 26 Mar 2018 17:49:54 +0000 Publication 139, Occupational Radiological Protection in Interventional Procedures, Now Available http://www.icrp.org/page.asp?id=380 <p>Last week, Publication 139 on Occupational Radiological Protection in Interventional Procedures was released on our <a href="publication.asp?id=ICRP%20Publication%20139">website</a>.&nbsp;&nbsp;</p> <p>Questions and inquiries can be directed to <a href="mailto:kelsey.cloutier@icrp.org">Kelsey Cloutier</a>, Development and Communications Manager.</p> <p><strong style="font-size: 12px;">Abstract -</strong><span style="font-size: 12px;">&nbsp;In recent publications, such as Publications 117 and 120, the Commission provided practical advice for physicians and other healthcare personnel on measures to protect their patients and themselves during interventional procedures. These measures can only be effective if they are encompassed by a framework of radiological protection elements, and by the availability of professionals with responsibilities in radiological protection. This framework includes a radiological protection programme with a strategy for exposure monitoring, protective garments, education and training, and quality assurance of the programme implementation. Professionals with responsibilities in occupational radiological protection for interventional procedures include: medical physicists; radiological protection specialists; personnel working in dosimetry services; clinical applications support personnel from the suppliers and maintenance companies; staff engaged in training, standardisation of equipment, and procedures; staff responsible for occupational health; hospital administrators responsible for providing financial support; and professional bodies and regulators. This publication addresses these elements and these audiences, and provides advice on specific issues, such as assessment of effective dose from dosimeter readings when an apron is worn, estimation of exposure of the lens of the eye (with and without protective eyewear), extremity monitoring, selection and testing of protective garments, and auditing the interventional procedures when occupational doses are unusually high or low (the latter meaning that the dosimeter may not have been worn).</span></p> Mon, 19 Mar 2018 14:31:31 +0000 ICRP Welcomes New Assistant Scientific Secretary Hiroki Fujita http://www.icrp.org/page.asp?id=378 <p>Effective March 5, 2018, Dr Hiroki Fujita serves as one of the new Assistant Scientific Secretary's at ICRP.</p> <p>For the first time, the Assistant Scientific Secretary is from the Japanese Atomic Energy Agency (JAEA), and will last for a term of three years.&nbsp; We're excited about this new relationship with JAEA, and must thank CRIEPI Radiation Research Safety Center, who gracioulsy supported this role over a six year span, through three quality experts in two-year intervals.</p> <p>Hiroki received his Doctorate in Science from the University of Niigata, and comes to ICRP from the Radiation Protection Department, Nuclear Fuel Cycle Engineering Laboratories, Sector of Decomissioning and Radioactive Waste Management at JAEA.</p> <p>For the next few weeks, Hiroki will be training alongside current Assistant Scientific Secretary Haruyuki Ogino, who will return to Japan in the next few weeks.&nbsp; Haru has been an integral part of the ICRP family these last few years, and he will be surely missed.&nbsp; Our sincerest gratitude and thanks to Haru, and welcome Hiroki.</p> Wed, 7 Mar 2018 19:56:56 +0000 Publication 138, Ethical Foundations of the System of Radiological Protection, Now Available http://www.icrp.org/page.asp?id=377 <p>Last week, Publication 138 was published on our <a href="publication.asp?id=ICRP%20Publication%20138">website</a>, ending the long awaited release of Ethical Foundations of the System of Radiological Protection.</p> <p>Questions can be directed to <a href="mailto:kelsey.cloutier@icrp.org">Kelsey Cloutier</a>, Development and Communications Manager.</p> <p><strong>Abstract</strong> -&nbsp;Despite a longstanding recognition that radiological protection is not only a matter of science, but also ethics, ICRP publications have rarely addressed the ethical foundations of the system of radiological protection explicitly. The purpose of this publication is to describe how the Commission has relied on ethical values, either intentionally or indirectly, in developing the system of radiological protection with the objective of presenting a coherent view of how ethics is part of this system. In so doing, it helps to clarify the inherent value judgements made in achieving the aim of the radiological protection system as underlined by the Commission in Publication 103. Although primarily addressed to the radiological protection community, this publication is also intended to address authorities, operators, workers, medical professionals, patients, the public, and its representatives (e.g. NGOs) acting in the interest of the protection of people and the environment. This publication provides the key steps concerning the scientific, ethical, and practical evolutions of the system of radiological protection since the first ICRP publication in 1928. It then describes the four core ethical values underpinning the present system: beneficence/non-maleficence, prudence, justice, and dignity. It also discusses how these core ethical values relate to the principles of radiological protection, namely justification, optimisation, and limitation. The publication finally addresses key procedural values that are required for the practical implementation of the system, focusing on accountability, transparency, and inclusiveness. The Commission sees this publication as a founding document to be elaborated further in different situations and circumstances.<br style="font-size: 12px;" /></p> Mon, 26 Feb 2018 15:10:43 +0000 Highly Anticipated Dose Coefficients for Radon Now Available on newly Launched ICRPaedia.org http://www.icrp.org/page.asp?id=375 <p class="MsoNormal"><span style="font-size: 10pt;">Radon, a naturally occurring gas that is found everywhere, is the largest contributor to radiation dose from natural sources world-wide, and the second leading cause of lung cancer after smoking.</span></p> <p class="MsoNormal"><span style="font-size: 10pt;">Given this, it is not surprising that radon has long been an important subject for radiological protection. A new </span><a style="background-color: #ffffff; font-size: 10pt;" href="http://www.icrpaedia.org/images/f/fd/ICRPRadonSummary.pdf">Summary of ICRP Recommendations on Radon</a><span style="font-size: 10pt;"> traces ICRP efforts on radon from </span><a style="font-size: 10pt;" href="publication.asp?id=ICRP%20Publication%2024">Publication 24</a><span style="font-size: 10pt;"> (1977) to </span><a style="font-size: 10pt;" href="publication.asp?id=ICRP%20Publication%20137">Publication 137, Occupational Intakes of Radionuclides: Part 3</a><span style="font-size: 10pt;"> (OIR 3), released earlier this week.</span></p> <p class="MsoNormal">OIR 3 provides dose coefficients for radon and radon progeny:</p> <p class="MsoNormal">&ldquo;For &hellip; inhalation of radon and radon progeny in underground mines and in buildings, in most circumstances, the Commission recommends a dose coefficient of 3 mSv per mJ h m<sup>-3</sup> (approximately 10 mSv WLM<sup>-1</sup>) &hellip; However, for indoor workplaces where workers are engaged in substantial physical activities, and for workers in tourist caves, the Commission recommends a dose coefficient of 6 mSv per mJ h m<sup>-3</sup> (approximately 20 mSv WLM<sup>-1</sup>)&rdquo;</p> <p class="MsoNormal">Considerably more information is available in OIR 3 and the Summary of Recommendations referred to above.</p> <p class="MsoNormal">In the coming weeks, radon will be highlighted on <a href="http://www.icrpaedia.org/index.php?title=Main_Page">ICRPaedia</a>, creating a central location where interested organisations, professionals, and members of the public can find an easy-to-understand summary of ICRP recommendations on radon.</p> <p class="MsoNormal"><span style="font-size: 10pt;">General inquiries may be directed to </span><span style="font-size: 10pt; text-decoration: underline;"><a href="mailto:kelsey.cloutier@icrp.org">Kelsey Cloutier</a></span><span style="font-size: 10pt;">, ICRP Development and Communications Manager.</span></p> Fri, 2 Feb 2018 15:37:03 +0000 Publication 137, Occupational Intakes of Radionuclides Part 3, Now Available http://www.icrp.org/page.asp?id=374 <p class="MsoNormal"><span style="font-size: 10pt;">The next installment in the series of Occupational Intakes of Radionuclides (OIR) reports is now published.</span></p> <p class="MsoNormal"><span style="font-size: 10pt;">The OIR series provides committed effective dose per intake (Sv Bq</span><sup>-1</sup><span style="font-size: 10pt;"> intake) for inhalation and ingestion, committed effective dose per content (Sv Bq</span><sup>-1</sup><span style="font-size: 10pt;"> measurement) for inhalation, and graphs of retention and excretion data per Bq intake for inhalation. An electronic annex contains a comprehensive set of committed effective and equivalent dose coefficients, committed effective dose per content functions, and reference bioassay functions.</span></p> <p class="MsoNormal"><span style="text-decoration: underline;"><a href="publication.asp?id=ICRP%20Publication%20130">OIR 1 (Publication 130)</a></span> describes the assessment of internal occupational exposure to radionuclides, biokinetic and dosimetric models, methods of individual and workplace monitoring, and general aspects of retrospective dose assessment.</p> <p class="MsoNormal"><span style="text-decoration: underline;"><a href="publication.asp?id=ICRP%20Publication%20134">OIR 2 (Publication 134)</a></span> provides data on radionuclides of: hydrogen (H), carbon (C), phosphorus (P), sulphur (S), calcium (Ca), iron (Fe), cobalt (Co), zinc (Zn), strontium (Sr), yttrium(Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), and technetium (Tc).</p> <p class="MsoNormal"><span style="text-decoration: underline;"><a href="publication.asp?id=ICRP%20Publication%20137">OIR 3 (Publication 137)</a></span> provides data on radionuclides of: ruthenium (Ru), antimony (Sb), tellurium (Te), iodine (I), caesium (Cs), barium (Ba), iridium (Ir), lead (Pb), bismuth (Bi), polonium (Po), radon (Rn), radium (Ra), thorium (Th), and uranium (U).</p> <p><a style="font-size: 10pt;"><span style="font-size: 11.0pt; line-height: 107%;">General inquiries may be directed to&nbsp;</span></a><a style="font-size: 10pt;" href="mailto:kelsey.cloutier@icrp.org"><span style="font-size: 11.0pt; line-height: 107%;">Kelsey Cloutier,</span></a><a style="font-size: 10pt;"><span style="font-size: 11pt; line-height: 107%;"><span style="font-family: Calibri, sans-serif;">&nbsp;I</span></span></a><a style="font-size: 10pt;"><span style="font-size: 11pt; line-height: 107%;"><span style="font-family: Calibri, sans-serif;">CRP Development and Communications Manager.</span></span></a></p> Tue, 30 Jan 2018 14:45:30 +0000 Summary of October 2017 C2 Meeting in Paris http://www.icrp.org/docs/Summary of October 2017 C2 Meeting Paris.pdf http://www.irpa.net/docs/Summary of October 2017 C2 Meeting Paris.pdf Fri, 19 Jan 2018 19:28:49 +0000 Summary of October 2017 C3 Meeting in Paris http://www.icrp.org/docs/Summary of October 2017 C3 Meeting Paris .pdf http://www.irpa.net/docs/Summary of October 2017 C3 Meeting Paris .pdf Tue, 19 Dec 2017 13:59:03 +0000 Publication 136, Dose Coefficients for Non-human Biota Environmentally Exposed to Radiation, Now Available http://www.icrp.org/page.asp?id=373 <p>Effective today, ICRP's most recent publication on&nbsp;Dose Coefficients for Non-human Biota Environmentally Exposed to Radiation is available on <a href="publication.asp?id=ICRP%20Publication%20136">ICRP.org</a>.</p> <p>The full report can be accessed with your subscription or purchase on the <a href="http://journals.sagepub.com/doi/full/10.1177/0146645317728022">SAGE Publishing</a> website.</p> <p><span style="font-size: 10pt;">&nbsp;</span><strong style="font-size: 12px;">Abstract -</strong><span style="font-size: 12px;">&nbsp;The diversity of non-human biota is a specific challenge when developing and applying dosimetric models for assessing exposures of flora and fauna from radioactive sources in the environment. Dosimetric models, adopted in Publication 108, provide dose coefficients (DCs) for a group of reference entities [Reference Animals and Plants (RAPs)]. The DCs can be used to evaluate doses and dose rates, and to compare the latter with derived consideration reference levels (DCRLs), which are bands of dose rate where some sort of detrimental effect in a particular RAP may be expected to occur following chronic, long-term radiation exposure, as outlined in Publication 124. These dosimetric models pragmatically assume simple body shapes with uniform composition and density, homogeneous internal contamination, limited sets of idealised sources of external exposure to ionising radiation for aquatic and terrestrial animals and plants, and truncated radioactive decay chains. This pragmatic methodology is further developed and systematically extended in this publication, which supersedes the DC values of Publication 108. Significant methodological changes since Publication 108 include: implementation of a new approach for external exposure of terrestrial animals with an extended set of environmental radioactive sources in soil and in air; considering an extended range of organisms and locations in contaminated terrain; transition to the contemporary radionuclide database of Publication 107; assessment-specific consideration of the contribution of radioactive progeny to DCs of parent radionuclides; and use of generalised allometric relationships in the estimation of biokinetic or metabolic parameter values. These methodological developments result in changes to previously published tables of DCs for RAPs, and revised values are provided in this publication. This publication is complemented by a new software tool, called 'BiotaDC', which enables the calculation of DCs for internal and external exposures of organisms with user-defined masses, shapes, and locations in the environment and for all radionuclides in Publication 107.</span><span style="font-size: 10pt;">&nbsp;</span></p> <h1></h1> Fri, 8 Dec 2017 16:16:54 +0000 Presentations Available for Joint ICRP-RERF-JHPS Workshop http://www.icrp.org/page.asp?id=372 <p>Presenations from the&nbsp;Joint ICRP-RERF-JHPS Workshop on Recent Progress in Radiation Dosimetry for Epidemiology and Radiological Protection can now be found&nbsp;<a href="page.asp?id=370">here</a>&nbsp;on www.icrp.org.</p> <p>This workshop took place on Saturday, December 2nd, 2017 at the University of Tokyo.&nbsp; The outstanding presentations remaining will be uploaded to the above next week.</p> Thu, 7 Dec 2017 19:54:50 +0000 Passing of Main Commission Emeritus Member Charles Meinhold http://www.icrp.org/page.asp?id=371 <p><img style="float: right; border: 1px solid black; margin: 10px;" src="admin/Charles%20Meinhold.jpg" alt="" width="150" height="150" /></p> <p>Charles B. Meinhold (1934-2017) was among the select few appointed as Emeritus Members of the ICRP Main Commission. This honorary life-long distinction, conferred only by unanimous agreement of the Main Commission, is an expression of appreciation for extraordinary contributions.</p> <p>All who knew Charlie were saddened to learn of his passing on November 3rd, 2017.</p> <p>His work with ICRP began in 1967, contributing to what would become ICRP <em>Publication 15</em> Protection against Ionizing Radiation from External Sources. Soon thereafter, Charlie was a member (1973-1977) of ICRP Committee 3 on external exposure, and then Chair (1977-1985) of ICRP Committee 3 newly renamed 'Protection in medicine'. It was a testament to his breadth of expertise that he was also Chair (1985-1993) of ICRP Committee 2 on secondary limits, and Vice-Chair (1993-2001) of the Main Commission. Upon retirement from this latest position, he was appointed as an Emeritus Member of the Main Commission.</p> <p>Charlie was also on the International Radiation Protection Association Executive Council (1984-1996), serving as Vice-President (1988-1992) and President (1992-1996).</p> <p>In addition to his international work, Charlie was active at home in the US, serving on the National Council on Radiation Protection and Measurements (NCRP) from (1979-2002), and its third President (1991-2002).</p> <p>Charlie will be missed by us all.</p> <p><a href="http://ncrponline.org/wp-content/themes/ncrp/PDFs/Obits/Meinhold_obit.pdf" target="_blank">Please also see the In Memorium message from NCRP</a>.</p> Thu, 23 Nov 2017 00:10:21 +0000 Joint ICRP-RERF-JHPS Workshop Dec 2017 Second Announcement http://www.icrp.org/docs/Joint ICRP-RERF-JHPS Workshop Dec 2017 Second Announcement.pdf http://www.irpa.net/docs/Joint ICRP-RERF-JHPS Workshop Dec 2017 Second Announcement.pdf Thu, 16 Nov 2017 16:27:51 +0000