관심표준 등록 : 표준업데이트 시 알림을 받을 수 있습니다.
PDF : 직접 파일 다운로드 및 인쇄 (마이페이지 확인)
PRINT : 인쇄본 우편발송, 2~3일 소요(PDF파일 미제공)
표준
판매
Water quality — Gamma-ray emitting radionuclides — Test method using high resolution gamma-ray spectrometry
| 분야 | ISO/TC 147/SC 3 : Radioactivity measurements |
|---|---|
| 적용범위 | This document specifies a method for the physical pre-treatment and conditioning of water samples and the determination of the activity concentration of various radionuclides emitting gamma-rays with energies between 40 keV and 2 MeV, by gamma‑ray spectrometry according to the generic test method described in ISO 20042. The method is applicable to test samples of drinking water, rainwater, surface and ground water as well as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample handling, and test sample preparation (filtration when necessary and taking into account the amount of dissolved material in the water). This method is only applicable to homogeneous samples or samples which are homogeneous via timely filtration. The lowest limit that can be measured without concentration of the sample or by using only passive shield of the detection system is about 5·10-2 Bq/l for e.g. 137Cs.1 The upper limit of the activity corresponds to a dead time of 10 %. Higher dead times may be used but evidence of the accuracy of the dead-time correction is required. Depending on different factors, such as the energy of the gamma-rays, the emission probability per nuclear disintegration, the size and geometry of the sample and the detector, the shielding, the counting time and other experimental parameters, the sample may require to be concentrated by evaporation if activities below 5·10-2 Bq/l need to be measured. However, volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation. This method is suitable for application in emergency situations.
1The sample geometry: 3l Marinelli beaker; detector: GE HP N relative efficiency 55 % ; counting time: 18h. |
| 국제분류(ICS)코드 |
17.240 : 방사능 측정
13.060.60 : 수질의 물리적 특성 검사 |
| 페이지수 | 27 |
| Edition | 3 |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 10703:2021 | Water quality — Gamma-ray emitting radionuclides — Test method using high resolution gamma-ray spectrometry | 2021-06-24 | 표준 |
| 2 | ISO 10703:2007 | Water quality — Determination of the activity concentration of radionuclides — Method by high resolution gamma-ray spectrometry | 2007-11-15 | 구판 |
| 3 | ISO 10703:1997 | Water quality — Determination of the activity concentration of radionuclides by high resolution gamma-ray spectrometry | 1997-05-15 | 구판 |
관련상품이 존재하지 않습니다.
ISO 13168:2015 - Water quality — Simultaneous determination of tritium and carbon 14 activities — Test method using liquid scintillation counting 상세보기
ISO 13167:2015 - Water quality — Plutonium, americium, curium and neptunium — Test method using alpha spectrometry 상세보기
ISO 13169:2018 - Water quality — Uranium — Test method using alpha liquid scintillation counting 상세보기
ISO 9698:2019 - Water quality — Tritium — Test method using liquid scintillation counting 상세보기
ISO 18589-1:2019 - Measurement of radioactivity in the environment — Soil — Part 1: General guidelines and definitions 상세보기
IEC TS 63134:2020 - Active assisted living (AAL) use cases 상세보기
IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 상세보기
KS B ISO TS 25740-1 - 에스컬레이터 및 무빙워크에 대한 안전요건 — 제1부: 세계공통 필수 안전요건(GESRs) 상세보기
KS B ISO TS 8100-21 - 승객 및 화물 운송용 엘리베이터 —제21부: 세계공통 필수안전요건(GESRs)을 충족하는 세계공통 안전 파라미터(GSPs) 상세보기
KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스 상세보기
KS표준
핸드북
