The Third International Interlaboratory Comparison

Transcription

1 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia 1 The Third International Interlaboratory Comparison Programme EMF-SCPL-03/2011 Interlaboratory Comparison of Electromagnetic Fields Measurements Radiofrequency Sources a.m. Hotel Admiral Reception Opatija, Croatia I.a. Co-ordinators: Prof. Dr. sc. Dina Šimunić, University of Zagreb, Croatia Dr. sc. Jolanta Karpowicz, Central Institute for Labour Protection National Research Institute, Poland Dr. sc. Efthymios Karabetsos, Greek Atomic Energy Commission, Greece Dr.sc. John FB Bolte, Laboratory for Radiation Research, National Institute for Public Health and the Environment, The Netherlands I.b. Supporting Institutions University of Zagreb, Faculty of Electrical Engineering and Computing, Croatia Croatian Accreditation Agency, Croatia Croatian Post and Electronic Communications Agency, Croatia Transmitters and Communications, Ltd., Croatia MIPRO, Croatia Green Engineering Society II. Purpose and Scope The purpose of the interlaboratory comparison programme, EMF-SCPL-03/2011, is to demonstrate the technical competence of the accredited laboratories, as well as to survey laboratories continuing performance. This proficiency testing program can show performance of a laboratory by means of executing the same measurement tasks by two or more laboratories in accordance with predefined conditions. This program can also identify problems in laboratories and incite corrective actions if needed to improve the quality of measurements, which later on can provide additional confidence for laboratory clients. Furthermore, the effectiveness and comparability of new measurement methods can be established, and likewise established methods can be monitored / improved. Thus, participation in proficiency testing schemes provides laboratories with an objective means of assessing and demonstrating the reliability of the data they are producing.

2 2 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia III. Documents regarding the program 1. ISO/IEC 17043:2010. Conformity assessment-general requirements for proficiency testing. 2. EN ISO/IEC 17025:2005. General requirements for the competences of testing and calibration laboratories. 3. EN 61566:1997 / IEC 61566:2001. Measurement of exposure to radiofrequency electromagnetic fields Field strength in the frequency range 100 khz to 1 GHz. 4. Council of the European Union Recommendation of 12 July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz), 1999/519/EC, Official Journal of the European Communities, L 199/ Directive 2004/40/EC of the European Parliament and of the Council of 29 April 2004 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) (18th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC), O.J. nr L-184 of 24 May ICNIRP Guidelines for Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz), Health Physics, vol. 74, No. 4 (April), IEEE C IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure to Such Fields, 100 khz 300 GHz 8. FCC OET 65:2001 Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, Additional Information for Evaluating Compliance of Mobile and Portable Devices with FCC Limits for Human Exposure to Radiofrequency Emissions 9. CEPT Revised ECC/REC/(02)04, Measuring non-ionising electromagnetic radiation (9 khz 300 GHz) 10. EN 50492: 2008 Basic standard for the in-situ measurement of electromagnetic field strength related to human exposure in the vicinity of base stations 11. EN 50413: 2008 Basic standard on measurement and calculation procedures for human exposure to electric, magnetic and electromagnetic fields (0 Hz GHz) 12. EN : 2006 Basic standard for the evaluation of human exposure to electromagnetic fields from a stand alone broadcast transmitter (30 MHz - 40 GHz) IV. Proficiency Scheme Nature and Purpose The purpose of this proficiency testing scheme is to assess the overall uncertainty and reliability of the nationally-accredited measuring laboratories for human exposure assessment. The focus will be on radiofrequency (RF) electromagnetic field measurements at selected locations. Internal exposure measurements, i.e., specific absorption rate (SAR), are not included. V. Procedure for Selection of the Participants Full participants need to fulfill the criteria of having an active accreditation from an accreditation agency in their country. It is also possible to participate at an observing participant level, e.g., laboratories which plan to apply for national accreditation. In either case, documentation showing the last calibration date for all measurement equipment is a necessary condition for a participation. VI. Required Information from Participants The participants shall furnish to the co-ordinators the name and address of the participating laboratory and responsible person, as well as information about the measurement method normally used (for an international standard, i.e., IEC or ITU, the title only is sufficient); for a regional or national standard (e.g., EN or IEEE), please provide title and description, in English. The other required information is the number of expected participants. The application form, together with required information on instrumentation data, is attached as Annex I.

3 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia 3 VII. Test Nature and Selection The target radiofrequency electromagnetic sources are especially both kinds of GSM base stations (900 and/or 1800 MHz), UMTS, as well as broadcasting signals from digital TV and radio. The selected location will be one indoor and one outdoor area. The sources were selected due to their widespread use and the highest public interest in evaluating exposure due to these sources. VIII. Measurement Description Two kinds of measurements are proposed. The first one is oriented towards the measurement of the level of the total electromagnetic field [EMF-SCPL-03/ Spot RMS], and the second one towards the comparison of exposure meters (RF personal monitors) results [EMF-SCPL-03/ Exposimetry]. All the measurements are planned at radiofrequencies, starting from 80 MHz and ending at 3GHz. The first proposed test [EMF-SCPL-03/ Spot RMS] is using a specified measurement method by the participants (any method each lab normally uses) in order to measure a full set of RF sources, including GSM 900 and 1800, UMTS, broadcasting stations, WLAN, etc, covered by wide band RMS measurements. Participants are encouraged to use the reporting method of their choice giving full details of the followed measurement procedure/method in their test report. The measurement protocols specifications of [EMF-SCPL-03/ Spot RMS] are attached as Annex II.A. It is recommended that the sensitivity of the used instruments is at least 1V/m. The second proposed set of tests [EMF-SCPL-03/ Exposimetry]. is oriented towards indoor and outdoor personal exposure meters (e.g., personal monitors/exposimeters of wide band RMS flat frequency response sensitivity) measurements of the total signal of the GSM and UMTS base stations, as well as broadcasting signals, especially digital TV. The main issue is to get changes of the results related to the defined orientation during movement in a multi-source and multi-frequency environment. The measurement protocols specifications of [EMF-SCPL-03/ Exposimetry]. are attached as Annex II.B. Each laboratory can participate in both part of tests, or any selected one. The use of more than one measurement device by each laboratory is welcome. The results will be assessed following the criterion for positive/negative results for every particular lab. IX. Evaluation procedure After collection of the raw data from all participants, the participants are required to submit the data to the organizer in the form provided by the organizer. Data and performance evaluation will occur only upon receipt of data from all participants, with special attention paid to measurement uncertainty estimations X. Location of the documentation of the program realization All the program documentation will be stored in responsibility of the local organizer at University of Zagreb. XI. Information and time-schedule description

4 4 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia The participants are informed of the basic applied measuring method and of the information that has to be sent to the co-ordinators. The time-schedule is the following: May 5, 2011 May 13, 2011 May 21, 2011 May 21, 2011 May 31, 2011 May 31, Information available for laboratories Registration Interlab event Data collection Performed evaluation of the performance data Report presenting obtained performance (positive/negative) The program was announced among others to national Accreditation Agencies, EUROLAB, IEC, CENELEC, WHO, FCC, ARIB, IEEE ICES, ETRI and ITU. XII. Contact Prof. Dr. sc. Dina Šimunić University of Zagreb, Faculty of Electrical Engineering and Computing, Unska 3, Zagreb, Croatia, tel-fax: ; dina.simunic@fer.hr; for urgent matters: Dr. sc. Jolanta Karpowicz Central Institute for Labour Protection - National Research Institute (CIOP-PIB), Czerniakowska 16, Warszawa, Poland, tel , jokar@ciop.pl Dr.sc. Efthymios Karabetsos Greek Atomic Energy Commission, Non-Ionizing Radiation Office, Patriarchou Grigoriou E & Neapolews str., P.O. Box: 60092, Ag. Paraskevi, Greece, tel: , thkarabe@eeae.gr Dr.sc. John FB Bolte Laboratory for Radiation Research, National Institute for Public Health and the Environment, The Netherlands, john.bolte@rivm.nl

5 Annex I.A. The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia 5 International Interlaboratory Comparison of Electromagnetic Fields Measurements Programme EMF-SCPL-03/2011 Participant Data Please complete separate document for each person measurement device set Date... -for the use of coordinator only- Laboratory code : -Lab... -for the use of coordinator only- Laboratory Name... Corresponding Address... Phone... Fax Person for performing measurements... Name, Surname, Title Applied measuring method... Please complete separate document for each person performing measurements. Full name of measuring equipment together with frequency range: [EMF-SCPL-03/ Spot RMS]... Date and place of last calibration of measuring equipment... Please complete separate document for each set of devices. Full name of measuring equipment together with frequency range: [EMF-SCPL-03/ Sxposimetry].... Date and place of last calibration of measuring equipment... Please complete separate document for each set of devices. Lab accreditation given by:... Responsible representative of Lab.... Name, Surname, Title Signature of the responsible person...

6 6 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia Annex II.A. The Third International Interlaboratory Comparison Programme EMF-SCPL-03/2011 Interlaboratory Comparison of Electromagnetic Fields Measurements Interlaboratory Comparison of Measurements of Indoor and Outdoor Radiofrequency Sources [EMF-SCPL-03/ Spot RMS] Protocol Definition a. Required materials Participants are obliged to carry with them pencils, and measuring equipment which is calibrated and has the relevant calibration certificates. The distance measurements are provided by the local co-ordinator. The minimum required sensitivity of acceptable devices is 1 V/m, and the expected measurement values are of the order of several V/m. b. Distributed materials The co-ordinators will ensure distribution of the proper form of the required results to all the registered participants, which will be given at the beginning of the interlab event c. Measuring method The participants choose the measurement method according to their measurement protocol. d. Measurements The proposed set of tests of measurements is oriented towards indoor and outdoor measurements of the level of the total field of the GSM and UMTS base stations, as well as broadcasting signals, especially digital TV and radio.. Participants are encouraged to use the measuring method of their choice giving full details about it their test report.

7 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia 7 e. Measurement configuration The sets of tests will be performed inside and outside of a building. The measurements will be performed at a height of 1,5 m at each measuring position. The goal of every team is to perform measurements and report the level of the maximum value. Every team will measure fields levels at several locations. The measured value is RMS value in the frequency range 0,027-3 GHz. The organizer will ensure the device which will register the variability of emitted signal during tests, to be sure that everybody was measuring the same field. The organizer will ensure the device which will register the variability of emitted signal during tests, to be sure that everybody was measuring the same field. f. Test spatial protocol The participants will draw their positions before the start. The first set of tests will be performed in the round-robin-manner. Before the start of the second set of tests, the positions will be drawn again. g. Measurement results Upon finished tests, the participants are required to give the results to the co-ordinators for the further treatment of proficiency test data, before leaving test site. Unfortunately, anything delivered afterwards cannot be accepted. h. After-measurement event After tests, the round table event will take place. This will enable to all participants to give us their output, as well as to organizers to check all the data from all the teams and to put the data to the excel sheet, in order to present preliminary data at the end of the round table. All the participants are then invited to discuss the results and in the next week the official evaluation of the obtained results (positive/negative) will be sent to them.

8 8 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia Annex II.B. The Third International Interlaboratory Comparison Programme EMF-SCPL-03/2011 Interlaboratory Comparison of Electromagnetic Fields Measurements Interlaboratory Comparison of Exposimetry of Indoor and Outdoor High-Frequency Sources [EMF-SCPL-03/ Exposimetry] Protocol Definition a. Required materials Participants are obliged to carry with them pencils, and measuring equipment which is calibrated and has the relevant calibration certificates. The measurements scenario is provided by the local coordinator. The minimum required sensitivity of acceptable devices is 1 V/m, and the expected measurement values are of the order of several V/m. b. Distributed materials The co-ordinators will ensure distribution of the proper form of the required results to all the registered participants, which will be given at the beginning of the interlab event c. Measuring method The participants choose the measurement method according to their measurement protocol. d. Measurements The proposed set of tests of measurements is oriented towards indoor and outdoor personal exposure meters (personal monitors) measurements of total signal of the GSM and UMTS base stations, as well as broadcasting signals, especially digital TV. The main scenario will be to perform measurements taking into account a defined source-device orientation and the changes of the signal output related to it in a multi-source and multi-frequency environment. The measured value is RMS value in the frequency range of 0,027-3 GHz.

9 The 3 rd International Interlaboratory Comparison EMF-SCPL-03/2011, Opatija, Croatia 9 e. Measurement configuration The sets of tests will be performed inside and outside of a building. The measurement scenarios outside and inside the building will be presented before the start of tests. The organizer will ensure the device which will register the variability of emitted signal during tests, to be sure that everybody was measuring the same field. f. Test spatial protocol The path dedicated for performing measurements during the tests will be marked by the coordinator. g. Measurement results Upon finished tests, the participants are required to give the results to the co-ordinators for the further treatment of proficiency test data, before leaving test site. Unfortunately, anything delivered afterwards cannot be accepted. Participants should be equipped with devices and software to allow them to upload exposimetric results in the interlab venue and to report them to the organisator. h. After-measurement event After tests, the round table event will take place. This will enable to all participants to give us their output, as well as to organizers to check all the data from all the teams and to put the data to the excel sheet, in order to present preliminary data at the end of the round table. All the participants are then invited to discuss the results and in the next week the official evaluation of the obtained results (positive/negative) will be sent to them.