Magnesium Production Facilities Monitoring Checklist Greenhouse Gas Reporting Program What Must Be Monitored by Each Magnesium Production Facility that Meets the Requirements of §98.200 and §98.201? xvEPA United States Environmental Protection Agency Each magnesium production facility must monitor the following information: ~ ~ ~ ~ Type of magnesium production process (e.g., primary, secondary, die casting). Average cover gas flow rate (standard cubic feet per minute). Overall cover gas usage rate for the facility (kg of GHG/metric ton of magnesium). New melt protection technologies adopted during the reporting year that account for changes in emissions from the previous year. Amount of magnesium produced or ~ processed over the reporting period for each process type (metric tons). Composition of the cover/carrier ~ gas during the reporting period (percent by volume). For missing data, the length of time data are missing, the method used to ~ estimate cover and carrier gas usage, and the quantity of emissions estimated for the missing data period. Changes in facility cover gas usage rate greater than 30 percent ~ compared to the prior year. If applicable, facilities must provide an explanation. Magnesium Production Facilities Monitoring Checklist Greenhouse Gas Reporting Program Page 1 of 2 40 CFR part 98, subpart T February 2018 ------- Each magnesium production facility must monitor the following parameters based on the gas consumption tracking method used: Inventory Method (Eqn. T-l) Inventory of each cover gas or carrier gas stored in cylinders or other ~ containers at the beginning of the year, ~ including residual gas amounts (heels), in kg. Inventory of each cover gas or carrier gas stored in cylinders or other containers at the end of the year, including heels, in kg. Acquisitions of each cover gas or ~ carrier gas during the year through purchases or other transactions, in kg. Disbursements of each cover gas or carrier gas to sources and locations outside the facility through sales or |—I other transactions during the year, including heels in cylinders or other containers returned by the magnesium production or processing facility to the gas supplier, including heels, in kg. Cylinder Tracking Method (Eqn. T-2, T-3) Mass of each container s contents ,, „ , . , A A , i—i /, s • r.A, i—i Mass or each container s contents (kg) ~ (kg) at the beginning of the ~ ^ . , ,, , ^ . . / ' ¦ ¦ 7 at the end or the container-use period, container-use period. Mass Flow Controller Method Mass of each cover gas or carrier ^ gas measured using a mass flow controller during the period of use. See also the information sheet for Magnesium Production at https://www.epa.gov/ghgreporting/subpart-t-information-sheet This document is provided solely for informational purposes. It does not provide legal advice, have legally binding effect, or expressly or implicitly create, expand, or limit any legal rights, obligations, responsibilities, expectations, or benefits in regard to any person. This information is intended to assist reporting facilities owners in understanding key provisions of the Greenhouse Gas Reporting Program. Magnesium Production Facilities Monitoring Checklist Greenhouse Gas Reporting Program Page 2 of 2 40 CFR part 98, subpart T February 2018 ------- |