TABLE 17. CAUSES OF OUTAGES DURING 2003 FOR NON-PROTOTYPE REACTORS |
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Outage Cause |
Planned Full Outages |
Unplanned Full Outages |
||||||
Energy Lost |
Time Lost |
Energy Lost |
Time Lost |
|||||
GW(e).h |
% |
Hours |
% |
GW(e).h |
% |
Hours |
% |
|
Plant equipment failure |
370 |
0.1 |
339 |
0.1 |
131199 |
79.9 |
149149 |
79.1 |
Refuelling without a maintenance |
4030 |
1.1 |
4101 |
0.9 |
91 |
0.1 |
103 |
0.1 |
Inspection, maintenance or repair combined with refuelling |
305009 |
82.9 |
346220 |
79.8 |
|
|
|
|
Inspection, maintenance or repair without refuelling |
37095 |
10.1 |
50314 |
11.6 |
27 |
0.0 |
23 |
0.0 |
Testing of plant systems or components |
2283 |
0.6 |
2080 |
0.5 |
81 |
0.0 |
116 |
0.1 |
TMajor back-fitting, refurbishment or upgrading activities with refuelling |
7324 |
2.0 |
9402 |
2.2 |
197 |
0.1 |
335 |
0.2 |
Nuclear regulatory requirements |
10994 |
3.0 |
20688 |
4.8 |
2423 |
1.5 |
2246 |
1.2 |
Grid failure or grid unavailability |
|
|
|
|
3024 |
1.8 |
5497 |
2.9 |
Load-following (frequency control, reserve shutdown due to reduced energy demand) |
|
|
|
|
3266 |
2.0 |
3068 |
1.6 |
Human factor related |
181 |
0.0 |
176 |
0.0 |
786 |
0.5 |
903 |
0.5 |
Governmental requirements or court decisions |
|
|
|
|
184 |
0.1 |
220 |
0.1 |
Environmental conditions (flood, storm, lightning, lack of cooling water , cooling water temperature limits etc.) |
|
|
|
|
4794 |
2.9 |
4719 |
2.5 |
Fire |
|
|
|
|
756 |
0.5 |
797 |
0.4 |
External restrictions on supply and services. |
|
|
|
|
475 |
0.3 |
731 |
0.4 |
Fuel management limitation (including high flux tilt, stretch out or coast-down operation) |
545 |
0.1 |
598 |
0.1 |
115 |
0.1 |
88 |
0.0 |
Others |
131 |
100.0 |
141 |
|
16796 |
10.2 |
20469 |
10.9 |
|
|
|
|
|
|
|
|
|
TOTAL |
367962 |
100.0 |
434059 |
100.0 |
164214 |
100.0 |
188464 |
100.0 |
Note: 2003 is the latest year for which outage information is currently available to the IAEA. |
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- Only reactors which have achieved full commercial operation in or before 2003 are considered. |