Stability Operating Procedures deviation

Thermal stability. A manual, semiautomatic or automatic CFR fuel coker shall be used. The equipment and operating procedures shall be in strict accordance with Method 3464 of Federal Test Method Standard No 791. No deviation from this method is aUowed... 

The trend identification can be qualitative and performed by graphing the stability data or could be performed by statistical analysis of the collated data. In both cases, the site OOT Standard Operating Procedure (SOP) defines criteria for designating a data deviation from the norm as an OOT incident. The OOT criteria must be set in such a way that all significant OOT incidences are identified, ideally without false positives. 

Operability and maintainability. The control system of the plant was designed and checked fbr plant stability with no significant oscillation or deviation for 10% stepwise changes and 5% ramp changes in reactor power. ISI of the primary major components was implemented for the structural concept based on the ISI policy(draft) established for the DFBR. It is confirmed that the major components and main piping in the primary loop can be repaired and maintained. Maintenance methods and procedures were examined using 3-dimensional CAD simulation. It was confirmed that regular maintenance and inspection works can be carried out within 60 days. 

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