Appleby Coke Ovens, Scunthorpe by Manoj Sharma This paper was ...

The conclusions which can be derived by the analysis are:• 15 % nozzles are in cracked condition (live with them) and 6% in bad shape.• 8% of the airports are in bad shape and many of them making the chamber excess in gas.• The excess gases (4%) are the major reasons for high Obscuration.• There are very few (0.28%) leaky flues.• 31% top flame are not burning in Batt#2,3&4 , major reason of green pushes.• 2.6% of the bottom flame also not burning Batt#2, 3&4.Once spotting the problem, actions needs to be started to resolve them under Implement phase of theproject. But before that in order to quickly hit the target a criterion was set by which all the heatingwalls can be prioritised. The criterion was shown in Table - 3.Sl. Criteria Major Impact PriorityNo.1. Walls having more than one excess gas flues Obscuration One2. Walls having any non burning flues Heating Profile Two3. Walls having one excess gas flue Obscuration Three4. Walls having more than one inadequate burning Heating Profile Fourflues5. Other walls None RestTable – 3The priority list is prepared based on the criterion and started actions under Control phase of theproject. A system was established to monitor the job execution on a daily basis. Every week the jobplanning was done and compliances were monitored and updated in the database. A sample prioritylist is shown in the Figure - 5 (Color coding was done to identify walls where actions already taken).