The KNF Way as International Standards
- The proposal for Regression Calibration Method developed by KNF as a new work item is accepted by ISO
- KNF’s Gadolinia Content Measurement Method was adopted as an International Standard in 2012

▲KNF’s technician is analyzing enrichment levels of uranium by using its calibration method applied instrument

A new chemical analysis method developed by a local technical team is projected to be used as an International Standard. KEPCO NF (President and CEO Lee Jae-hee) announced on May 22 that The Regression Calibration Method developed and proposed by the company has been accepted as a new work item by the votes of ISO member bodies.

The method calibrates chemical analysis equipment by using reference solutions of multiple concentrations. It is known that there was no methodology available up to now for how to evaluate calibration uncertainty that arises after calibration using linear regression analysis; the uncertainty for the measurement value could not be clearly stated after calibration. KNF developed a methodology to evaluate the uncertainties based on statistical theories. The company submitted a new work item proposal (NP) to ISO in January 2014 in order to standardize the new calibration method that enables uncertainty evaluation.

ISO accepted KNF’s proposal by reviewing its draft International Standard (DIS) and supporting Article based on the votes cast of experts from 5 ISO member bodies including France in May 2014. The proposal will go through stages of the development of International Standards to be finalized as an International Standard possibly until 2017: Committee stage, Enquiry stage, and Approval stage. The Regression Calibration Method of KNF will be circulated to related industries all over the world accordingly if it meets the entire requirement.

In 2012, ‘Gadolinia Content Measurement Method’ developed and proposed by KNF, which is required for determining the composition of gadolinium and uranium in gadolinium fuel pellets, was adopted as an International Standard in the result of 13 ISO member bodies all in favor at the FDIS (Final Draft of International Standard) stage.

President Lee Jae-hee said, “It is significant that Korea is recognized worldwide with its excellence of chemical analysis techniques. We will continuously strive to provide a boost for Korea’s global status in the arena of International Standards by getting fully ready with our know-how.”