城镇燃气场站甲烷排放核算标准滞后性问题及修订建议OA

As a potent greenhouse gas,the accurate accounting of methane is a critical prerequisite for emission reduction in the urban gas industry.Focusing on the lagging nature of China's current methane emission accounting standards for urban gas stations,this paper systematically sorts out the composition and shortcomings of the existing domestic accounting standard system.Combined with field measurement cases of gas stations,it analyzes the core problems of the standards from three dimensions:granularity of emission factors,timeliness of data,and support for field measurement methods.Specifically,accounting factors are only classified by station pressure level without refinement to the equipment/component level;most emission factors adopt IPCC 1996 data sourced from API,which are inconsistent with China's current equipment and management level;and the lack of field measurement technical specifications leads to significant discrepancies in accounting results.Meanwhile,this paper examines the constraints of lagging standards on enterprises'emission reduction motivation,the accuracy of policy formulation,and the development of monitoring technologies.Drawing on the management mechanisms of graded accounting,dynamic updating,and field measurement orientation in Europe and the United States,it proposes revision suggestions from three aspects:constructing a three-level emission factor database,establishing a dual accounting system of"default factors+field measurement correction",and building a supporting platform for standard implementation.This study aims to provide technical support for the refined management and control of methane emissions from urban gas stations.