Historical Operational Statistics
The reporting requirements for DOE national user facilities are based on time. These requirements concern the actual hours of operation (ACTUAL) and the established maximum operation or uptime goal (OPSMAX). The average annual OPSMAX time for the ARM sites has been established to be 7884 hours per year. In other words, 0.90 of the 8760 hours in an non-leap year. During a leap year, OPSMAX time will be set at 7906 hours, or 0.90 of the 8784 available hours. The differences in time reflect the complexity of local logistics and the probability of extreme weather events. For a complete description of hours for each site, please refer to the current ARM Climate Research Facility Operations Quarterly Report.
The tables below provide the average actual hours of operation (ACTUAL) and the established maximum operation or uptime goal (OPSMAX) for the three ARM sites by fiscal year since 1998. In 2005, the statistics began reporting quarterly without being cumulative.
Table 1. Operational Data Statistics for the ARM Sites Beginning in 2006
1st Quarter
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2nd Quarter
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Time (hr) | Data Availability (%) | Time (hr) | Data Availability (%) | |||||
Fiscal Year | OPSMAX | ACTUAL | GOAL | ACTUAL | OPSMAX | ACTUAL | GOAL | ACTUAL |
2011 | 1987.20 | 2112.32 | 0.90 | 0.96 | 1944.00 | 1944.00 | 0.90 | 0.90 |
2010 | 1987.20 | 2082.81 | 0.90 | 0.94 | 1944.00 | 2010.88 | 0.90 | 0.93 |
2009 | 1987.20 | 2097.60 | 0.90 | 0.95 | 1944.00 | 2008.80 | 0.90 | 0.93 |
2008 | 1987.20 | 2075.52 | 0.90 | 0.94 | 1965.60 | 2065.12 | 0.90 | 0.95 |
2007 | 1987.20 | 2082.88 | 0.90 | 0.94 | 1944.00 | 2052.00 | 0.90 | 0.95 |
2006 | 1987.20 | 2082.88 | 0.90 | 0.94 | 1944.00 | 2088.00 | 0.90 | 0.97 |
3rd Quarter
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4th Quarter
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Time (hr) | Data Availability (%) | Time (hr) | Data Availability (%) | |||||
Fiscal Year | OPSMAX | ACTUAL | GOAL | ACTUAL | OPSMAX | ACTUAL | GOAL | ACTUAL |
2011 | 1965.60 | 1987.44 | 0.90 | 0.91 | 1987.20 | 2046.08 | 0.90 | 0.92 |
2010 | 1965.60 | 2060.24 | 0.90 | 0.94 | 1987.20 | 2031.36 | 0.90 | 0.92 |
2009 | 1965.60 | 2118.48 | 0.90 | 0.97 | 1987.20 | 1994.56 | 0.90 | 0.95 |
2008 | 1965.60 | 2081.35 | 0.90 | 0.95 | 1987.20 | 2097.60 | 0.90 | 0.95 |
2007 | 1965.60 | 2002.00 | 0.90 | 0.92 | 1987.20 | 2024.07 | 0.90 | 0.92 |
2006 | 1965.60 | 2140.32 | 0.90 | 0.98 | 1987.20 | 2097.60 | 0.90 | 0.95 |
Table 2. Operational Data Statistics for the ACRF Sites from 2005 to 1998
Time (hr) | Data Availability (%) | |||
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Fiscal Year | OPSMAX | ACTUAL | GOAL | ACTUAL |
2005 | 7938.9 | 8023 | 0.90 | 0.92 |
2004* | 7906 | 8023 | 0.90 | 0.91 |
2003 | 7884 | 7096 | 0.90 | 0.90 |
2002 | 7884 | 7270 | 0.90 | 0.92 |
2001 | 7884 | 7358 | 0.90 | 0.93 |
2000* | 7906 | 7203 | 0.90 | 0.91 |
1999 | 7884 | 7271 | 0.90 | 0.92 |
1998 | 7884 | 7183 | 0.90 | 0.91 |
*Leap year