MOSCOW (MRC) -- Repair works on the steam cracker in Chempark Zaluzi, which has been out of the operation since last year’s extraordinary event on August 13, are completed and also the construction of new pyrolysis heaters is coming to the end, said the company on its site.
Finals tests before gradual start of production are currently under way. Standard production of the steam cracker is expected in late October. The steam cracker restoration lasted more than ten months and related costs amount to four billion crowns. Based on company’s internal investigation, measures have been taken to minimize the risk of similar incidents in the future.
The newly adopted technological measures apply for the system of safety valves in the propylene column where new valves were installed according to the best proven engineering practice. The system of safety valves in the ethylene column and in all technological facilities so that they always meet current needs according to the best available technical possibilities.
As a part of the measures we also review current emergency procedures including the development of emergency plans relating to high risk cases. The company also prepared a project for emergency separation of flammable inventory. Several organizational measures were adopted to increase safety; these are aimed at improving communication among operators including more precise procedure for information transmission.
In connection with a gradual start up of the steam cracker there will be a production combustion in the flare (flaring), which may be accompanied by sound and smoke effects. Unipetrol excuses for any inconvenience to residents of surrounding towns and villages. More information for the public is updated continuously at the website of the Most Environmental Centre at www.ecmost.cz in a section Developments in the industry.
The steam cracker is currently undergoing final tests before resuming the operation. These tests examine individual connections after the long turnaround. „The technological safety and its tightness is essential when resuming the operation, therefore the tests are repeated after adjustments so that we can be sure that everything is in order," says Unipetrol Board member Martin Durcak.
A part of the ten-month steam cracker reconstruction was the construction of four new heaters, repair of damaged chimney, flue, pipe bridges, propylene column protection system, wiring, replacement of parts of measurement and control, isolation and local repair of damaged facilities.
As MRC reported earlier, Unipetrol had restarted its polymerization units at the Litvinov plant - polyethylene (PE) and polypropylene (PP) - at limited extent and for a temporary production thanks to external feedstock deliveries of ethylene and propylene.
Unipetrol , a.s. is a group of companies operating in the petrochemical industry in the Czech Republic. In 2005 Unipetrol became a part of the PKN ORLEN Group, the largest oil processor in Central Europe. The UNIPETROL Group is oriented mostly towards oil processing, fuel distribution and petrochemical production. In all of these business areas the Unipetrol Group is among the key players both in the Czech Republic and on the Central European market. The Group ranks among the leading firms in the Czech Republic in terms of its revenues, and employs almost 4,000 people.
MRC