Characterize generic outages of the primary energy and/or water supplies at your site. Such “grouped” hazards in the TRN Lite capture outages from any cause, as long as the hazards wouldn’t also have the potential to damage on-site assets (i.e., supply redundancies). For each supply type, review the provided outage duration and select the anticipated frequency with which you would expect to see such an outage. For more information on grouped hazard outage frequencies, see the TRN Resource: Outage Frequencies.

Supply Lost	Outage Duration	Frequency
Electricity	1 hour	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 day	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 week	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 month	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	6 months	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
Natural Gas	1 hour	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 day	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 week	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 month	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	6 months	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
Water	1 hour	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 day	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 week	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	1 month	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)
	6 months	- not included in evaluation - Almost certain (3 times/year) Likely (once a year) Anticipated (1 in 10 years) Unlikely (1 in 100 years) Extremely unlikely (1 in 1,000 years)