HOME   Cart(1)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

JJG 912-2010 English PDF

US$349.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 912-2010: Verification Regulation of Ionization Chamber Dosimeters Used In Radiotherapy
Status: Valid

JJG 912: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 912-2010English349 Add to Cart 3 days [Need to translate] Verification Regulation of Ionization Chamber Dosimeters Used In Radiotherapy Valid JJG 912-2010
JJG 912-1996English399 Add to Cart 3 days [Need to translate] Verification Regulation of Ion Chamber Dosimeters Used in Radiotherapy Obsolete JJG 912-1996

PDF similar to JJG 912-2010


Standard similar to JJG 912-2010

GB/T 3222.1   JJG 188   JJF 1396   JJG 852   JJG 377   JJG 393   

Basic data

Standard ID JJG 912-2010 (JJG912-2010)
Description (Translated English) Verification Regulation of Ionization Chamber Dosimeters Used In Radiotherapy
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A58
Classification of International Standard 17.240
Word Count Estimation 15,186
Date of Issue 2010-06-10
Date of Implementation 2010-12-10
Older Standard (superseded by this standard) JJG 912-1996
Quoted Standard IEC 60731; JJF 1001-1998; JJF 1059-1999; JJF 1035-2006; GB/T 17857-1999
Regulation (derived from) AQSIQ Announcement No. 59 of 2010
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to therapeutic levels of ionization chamber dosimeters initial verification, testing and use of follow-up inspection. HVL test range is 0. 027mmAl to 3. 00mmCu of low-energy X-rays and ^ (60) Co or ^ (137) Cs�� ray radiation field proceed.

JJG 912-2010: Verification Regulation of Ionization Chamber Dosimeters Used In Radiotherapy

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Verification Regulation of Ionization Chamber Dosimeters Used In Radiotherapy State verification procedures People's Republic of China Therapeutic levels of ionization chamber dosimeter Issued on. 2010-06-10 2010-12-10 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Therapeutic levels of ionization chamber dosimeter verification procedures py Alternative JJG 912-1996 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on June 10, 2010, and from From December 10, 2010 into effect. Focal point. the National Technical Committee of ionizing radiation metrology Drafting units. China Institute of Metrology Participated in the drafting unit. Jiangsu Province Institute of Metrology Beijing Institute of Metrology detection China Testing Technology Research Institute This procedure commissioned the National Technical Committee is responsible for ionizing radiation measurement interpretation The main drafters of this procedure. Hujia Cheng (China Institute of Metrology) Zhang Hui (China Institute of Metrology) Lvya bamboo (China Institute of Metrology) Hu Shang Ze (Jiangsu Province Institute of Metrology) Tao (Beijing Institute of Metrology detection) Yang Yong (China Testing Technology Research Institute)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 3.1 The term (1) 3.2 units of measurement (2) 4 Overview (2) 5 metering performance requirements (2) 6 General Requirements (3) 6.1 Device and tag number (3) 6.2 display device (3) 6.3 appearance requirements (3) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 test items and test methods (4) 7.3 Verification Results Processing (7) 7.4 test cycle (7) Appendix X-ray radiation qualities A specification and use of the radiation field (8) Appendix B test certificate page format (9) Appendix C test results in the notice page format (10) Therapeutic levels of ionization chamber dosimeter verification procedures

1 Scope

The order applies to therapeutic levels of ionization chamber dosimeter initial verification, subsequent verification and in-service inspection. Verification Fan Wai HVL is 0.027mmAl to 3.00mmCu of low-energy X-rays and 60Co or 137Csγ ray radiation field Carried out.

2 Citations

[1] IEC 60731 Dosimeterswithionizationchambersasusedinradiotherapy water treatment Flat ionization chamber dosimeter (1997) [2] JJF1001-1998 common measurement terms and definitions [3] JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement [4] JJF1035-2006 ionizing radiation measurement terms and definitions [5] GB/T 17857-1999 Medical imaging academic language (radiotherapy, nuclear medicine and radiation dosimetry equipment) When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 terminology and units of measurement

3.1 Terms 3.1.1 ionization chamber ionizationchamber By the ionization detector consisting of a cavity, the cavity proper air, an electric field is used to collect the charges and the accompanying Ionizing radiation generated in the detector sensitive volume of ions or electrons, which does not cause gas field multiplication phenomenon. 3.1.2 treatment level ionization chamber dosimeter radiotherapydosimeter Measurement radiotherapy photon and electron radiation in air kerma (rate), absorbed dose (rate) the use of ionizing Measuring chamber device, composed by the following components. Component ionization chamber, measuring equipment, stability testing device (option). 3.1.3 half-value layer half-valuelayer Placed on some sort of path of the radiation beam to pass through, to make the specified amount of radiation (such as air kerma) decreases Half the thickness required for a given material. 3.1.4 (measuring device) Zero drift (measuringassembly) zerodrift When the measuring device in the "Measure" status, but there is no signal, continuous change near zero. 3.1.5 (ionization chamber) reference point referencepoint (ofachamber) Ionization chamber that in the ionization chamber calibration to comply with the agreed points above the true value. 3.1.6 Calibration factor calibrationfactor Conventional true value divided by the indicated value of the business, in response to the calibration factor is reciprocal. 3.1.7 standard dosimeter standarddosimeter Qualified by reference means test and verification work for the dosimeter dosimeters. 3.1.8 Working dosimeter routinedosimeter Use standard certified by dosimeter for measuring daily dose dosimeter.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 912-2010_English be delivered?

Answer: Upon your order, we will start to translate JJG 912-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 912-2010_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 912-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 912-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 912-2010 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.