MCSC completed major repair and maintenance work in Bapco FCCU Complex during the T&I Feb. 2013. About 580 employees in different crafts were deployed, total man-hours worked were 272,988.
Following units were repaired/attended during this shutdown:
FCCU Structure (one reactor and one regenerator)
FCCU Ground Floor (2 columns, 10 vessels).
GCU (7 columns, 31 vessels)
2Poly (2 columns, 6 vessels)
1LPG (6 vessels)
5CDU (2 columns, 2 vessels)
Major jobs executed during the T&I are given below.
6V602 #1 Reactor
Around 40 Sq.ft of refractory in the lower section of Inlet baffle was removed, grit blasted and reinstalled.
Two cyclones roof / Trumpet mouth refractory was repaired.
7 panels 12% Cr. lining panels were replaced.
11 Panels of SS316 lining panels were replaced on reactor shell below the inlet baffle.
6 layers of stripper packing removed for inspection and reinstalled.
WBU performed at eroded locations of coke grid as advised by RED.
6V601 Regenerator
268 Nos. of SS Grid inserts were replaced on bottom cone domed grid.
Weld repairs of minor cracks at 11 locations were done on the stack orifice plate grid inserts.
Minor detachments of refractory & hex mesh found in primary cyclones 1 to 4 were replaced.
80 Nos. of burning air ring nozzles were replaced.