Explosion in the pipe of the chemical recovery plant at UPM Pietarsaari, Finland - Damages repaired in 6 days

(UPM, Pietarsaari, 29.12.2008) – In the evening of 28 December 2008, there was an explosion in the pipe of the chemical recovery plant at UPM Pietarsaari, Finland.

The explosion did not cause any injuries but caused damages to the lower part of the pipe. Due to the Christmas downtime of the pulp and paper mills, diluted odour gases have been channelled into the pipe instead of the furnace of the recovery boiler. Neither the explosion nor the odour gases caused any environmental damage or damage to people's health.

The damages in the pipe have now been evaluated. UPM estimates that repairing of the pipe will take 6 days. The estimated cost of the repair is up to 500,000 euros. The start-up of the pulp mill will be delayed until 4 January 2009.

The cause of the explosion is still unclear. UPM continues to study the cause of the explosion in coordination with external experts.

For more information, please contact:
Mr Heikki Öhman, Technical Director, UPM Pietarsaari, tel. +358 40 585 2387