HFC23 Decomposition Project at Zhonghao Chenguang Research Institute of Chemical Industry, Zigong, SiChuan Province, China

Audit Analysis

This CDM HFC23 decomposition project at a Chinese HCFC22 production facility has a VVB-verified investment additionality test and operates as an avoidance project with no inherent reversal risk. However, 16 material findings across multiple monitoring periods show the project repeatedly exceeded the 3% maximum eligible HFC23 waste generation rate, indicating operation at the eligibility boundary. The baseline approach is contradictory between documents (measured vs. modeled), and several key MRV parameters remain unquantified in the available record.

Project Description

Red Flags

• ⚠16 material findings across multiple monitoring periods show the HFC23 waste generation rate consistently exceeded the 3% maximum eligible threshold (ranging from 3.05% to 3.21%), indicating the project operates at the eligibility boundary
• ⚠HCFC22 production exceeded the maximum historical annual production level (5,968 t vs. 5,887 t cap) in at least two monitoring periods
• ⚠Baseline characterization is contradictory: the PDD (2007) describes a modeled baseline while the monitoring report (2014) describes a measured baseline
• ⚠Three corrective actions were required, including correction of the crediting period length expression and alignment of the starting date with annual emission reduction estimates

Credit Vintages