Methods for Estimating Emissions from Tanks – Part 2

Modern West Advisory Inc

CanERIC Program

March 31, 2023

 

Executive Summary

The magnitude of tank vent rates, the temporal nature of tank vents, the root cause of tank venting, the difference between actual vent rates and reported vent rates, and the viability of emerging technologies to detect and quantify tank vent rates, are not widely understood or known.

Previous work led by Modern West Advisory (MWA) studied tank venting in Alberta. Components of this work included:

  • Installation of (temporary) meters to directly measure tank vent rates.
  • Perform aerial surveys to categorize methane releases by process block, including emissions from uncontrolled and controlled hydrocarbon storage tanks.
  • Compare direct measurement of tank vents with aerial surveys by concurrent deployment.

The original Project Scope for Methods for Estimating Emissions from Tanks – Part 2 was developed in August 2022 and included two key components:

  1. Field work that included aerial surveillance with follow-up by ground crews to directly meter tank vents.
  2. Desktop review of 2022 Bridger Surveys in a different area of AB than previously studied, to inventory emissions by process block, including uncontrolled hydrocarbon storage tanks.

 

Part 2 – Final Report