Summary
This work is founded on a significant and unusual database of biodegradability test results collected over the last decade for different transformer insulating liquids. It presents an extensive analysis of biodegradability testing of transformer insulating liquids using OECD 301 protocols, highlighting challenges with poorly water-soluble substances, test method comparisons (301 B vs. 301 F), effects of dispersants, variability in test results across different labs and batches, and the relevance of these tests in the electrical industry context where oil spills are rare, concluding with recommendations for future standard developments and harmonisation to improve environmental impact assessments and transformer technology sustainability.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | D1_11387_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Sweden |
| Study committees | |
| File size | 671 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
NORRBY Thomas - Nynas AB; CAMPELO Hugo - Nynas AB; PERRIER Christophe - GE Vernova
Keywords
Biodegradability, OECD 301B/F, Insulating Liquids, Transformers, Dispersant, Water-Soluble
