How is the COI counted for fuels that are stored in aboveground tank farms (including farms that are part of pipeline systems)?
For more information on this topic, please reference page 8 & 25 of 41 in the Final Rule, Appendix to Chemical Facility Anti-Terrorism Standards (http://www.dhs.gov/xlibrary/assets/chemsec_appendixafinalrule.pdf) on the DHS Critical Infrastructure: Chemical Security website. Referenced Text: If a release-flammable chemical of interest is present in a mixture in a concentration equal to or greater than one percent (1%) by weight of the mixture, and the mixture has a National Fire Protection Association (NFPA) flammability hazard rating of 4, the facility shall count the entire amount of the mixture toward the STQ. Except as provided in ยง 27.203(b)(1)(v) for fuels that are stored in aboveground tank farms (including farms that are part of pipeline systems), if a release-flammable chemical of interest is present in a mixture in a concentration equal to or greater than one percent (1%) by weight of the mixture, and the mixture has a National Fire Protection Association (NFPA) flammability
