Thursday, January 25
8:00 - 3:00 Training Course: EPA Method 904.0, Radium-228 in Drinking Water and TNI 2017 Standard Volume 1 Module 6
Using EPA Method 904.0, Radium-228 in Drinking Water, as an example, this course will provide participants with a general understanding of the theory behind the radioanalytical techniques used, and applicable requirements of TNI 2017 Standard Volume 1 Module 6 (V1M6). A mixture of theory-lecture and interactive exercises using real laboratory data examples will help participants see how analytical processes translate into actions, results, and records that one might encounter in a typical radioanalytical laboratory. It will also address typical challenges that may be encountered. This class will be of benefit both to radiochemistry laboratorians and radiochemistry assessors/ABs.
Topics addressed will include:
- Method scope, application, and limitations
- Method 904.0 radiochemical separations of radium and actinium;
- Theory of chemical yield monitoring and chemical yield corrections;
- Radioactive decay and decay progeny ingrowth for 228Ra;
- Sample test source preparation;
- Gas-flow proportional counter (GPC) set-up, performance checks, efficiency calibrations, and background determinations;
- Calculation and reporting of results and associated statistics (i.e., counting uncertainty vs. combined uncertainty, critical level vs. minimum detectable concentration vs. SDWA Detection Limit, chemical yield);
- Common problems and challenges encountered with this method;
- TNI Standard Volume 1, Module 6 requirements as they relate to EPA Method 904.0.
Students will complete the course with an understanding of:
- The general principles behind EPA Method 904.0 including
o Method 904.0 scope and application;
o The role of decay and ingrowth in Method 904.0;
o Radiochemical separation of radium and actinium and preparation of the sample test source;
o General principles behind gas-flow proportional counting;
- Set-up, quality control and calibration requirements for gas-flow proportional counters;
- Background determinations for gas-flow proportional counters;
o A general familiarity with EPA Method 904.0 calculations of activity concentration.
- And how V1M6 requirements relate to the Method 904.0 processes:
o Method scope, application, and limitations;
o Method validation;
- Detection capability;
o Sample specific controls: chemical yield;
o Sample measurements;
o Batch quality controls;
o Reviewing and reporting results.
Instructors: Radiochemistry Expert Committee (Bob Shannon; Larry Penfold; Carolyn Wong)
Course Exam: Yes; CEUs for people correctly answering >2/3 correctly.
Fee: $125 for TNI Members; $195 for Non-Members