Research Article
Evaluation of Worker Radiation Exposure during the Kori Unit 1 Steam Generator Dismantling Process
Table 2
The material, dimension, and contamination of the pipe connected to the SG.
| | Pipe | Material | Inner diameter (cm) | Thickness (cm) | Contamination level |
| | Cold leg pipe (RCS2)) | Stainless steel | 69 | 6.7 | LILW3) | | Hot leg pipe (RCS2)) | Stainless steel | 74 | 7.1 | LILW3) | | Main steam pipe | Carbon steel | 66 | 3.5 | VLLW4) | | Main feedwater pipe | Carbon steel | 36 | 2.4 | VLLW4) | | Drain pipe (1) | Carbon steel | 4 | 0.5 | VLLW4) | | Drain pipe (1) | Carbon steel | 1.8 | 0.3 | VLLW4) | | Intake and outlet pipe | Carbon steel | 4 | 0.5 | VLLW4) | | Wet well vent pipe | Stainless steel | 4 | 0.5 | VLLW4) | | Level/flow measurement pipe | Stainless steel | 0.6 | 0.15 | VLLW4) | | Sample collection pipe | Stainless steel | 0.6 | 0.15 | VLLW4) |
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SG: steam generator. RCS: reactor coolant system. LILW: low and intermediate level waste. VLLW: very low level waste.
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