Russian dam disaster kills 10, scores missing
* Turbine room floods at Russia's largest hydro-power plant
* No threat of dam bursting -- emergencies minister
* Aluminium and steel plants switch to alternative supplies
* PM Putin suggests revising power prices in response
(Updates number missing, damage, adds Putin response, quotes)
By Ilya Naymushin
CHERYOMUSHKI, Russia, Aug 17 (Reuters) - Ten people were killed on Monday and up to 72 were missing after a turbine room flooded at Russia's largest hydro-power station, forcing steel and aluminium plants in Siberia to turn to emergency power. RusHydro (HYDR.MM), owner of the Sayano-Shushenskaya plant, said the damage would run into "billions of roubles" and take several months to repair. The company's shares were suspended in Russia and fell more than 15 percent in London.
Panicked residents in the shadow of the Soviet-era dam fled their homes when news of the accident spread at 8:15 a.m. (0015 GMT). Calm returned after Emergencies Minister Sergei Shoigu said there was no danger of damage to the structure of the dam and no danger that it would burst.
Officials said water flooded a turbine room at the dam, which is more than 3,000 km (1,900 miles) east of Moscow. An investigation was under way to determine the cause.
RusHydro officials said 10 people had been killed and 11 injured in the disaster, but there were varying claims of how many were still missing. In a live video conference with Prime Minister Vladimir Putin, the chief engineer of the station said that 72 were unaccounted for after the flood.
"The fate of 72 people is still being determined," Chief Engineer Andrei Mitrofanov told Putin.
A RusHydro spokeswoman, however, said the number of missing fell to 32 from 62 in the course of the day. "I just saw them pull out another one -- wet but alive," said spokeswoman Yelena Vishnyakova. "There are now 32 missing."
A Reuters correspondent saw about 150 emergency workers in safety helmets gathered at the dam. The damaged pump room, around 100 metres long, is located high in a concrete wall that has dammed the waters of the Yenisei River since 1978.
RusHydro acting chief executive Vasily Zubakin, speaking on a conference call, said the plant had stopped operations and damage would run into "billions of roubles". Some production units were damaged beyond repair, and even a partial restart of the undamaged units would take several months, he said.
The Sayano-Shushenskaya plant represents 25 percent of RusHydro's total capacity of 25.3 gigawatts of power.
"The accident will serve as a reminder of the importance of electricity in a modern economy, and that safety and reliability cannot be achieved without proper funding," analysts at investment bank Renaissance Capital said in a research note.
Russia's financial markets regulator suspended trading in RusHydro shares on both main stock exchanges at the company's request. The stock had fallen 7.1 percent on the MICEX exchange when suspended, while the main index was down 3 percent.
ALUMINIUM AND STEEL
Zubakin said three of the station's 10 power generating units had been destroyed and repairs would take years.
The power station is only 50 km (30 miles) from two smelters owned by United Company RUSAL, the world's largest aluminium producer and the biggest asset in the empire of indebted businessman Oleg Deripaska.
Electricity to the Khakassia and Sayanogorsk plants was cut but both switched to supplies from neighbouring regions and resumed normal operations, said Vladimir Shulekin, spokesman for the Sayanogorsk plant.
But, at an emergency meeting chaired by Energy Minister Sergei Shmatko and attended by Deripaska, aluminium output cuts were discussed as a possible way of creating additional energy reserves for autumn and winter. [ID:nLH586690]
Putin, shown on Vesti television monitoring the situation from the emergencies ministry in Moscow, ordered his deputy Igor Sechin to propose changes to state-regulated electricity prices in Siberia in response to the accident, agencies reported.
Renaissance Capital said the unavailability of a third of Sayano-Shushenskaya's capacity would reduce RusHydro's 2010 revenues by around $100 million, or 3 percent. It forecast reconstruction costs of between $1.0 billion and $1.5 billion.
Zubakin said RusHydro's monthly losses would be 1.5 billion roubles ($47.3 million), Interfax news agency reported.
Regional power supplier OGK-6 OGK6.MM said in a statement it had raised output at its Krasnoyarsk hydroelectric plant to full capacity to help make up the shortfall from the accident.
Steel maker Evraz Group HK1q.L also relies on Sayano-Shushenskaya for some of the power used by its mills and coal mines in Kemerovo region. Evraz said it was doing everything to avoid or minimise any possible production losses. (Additional reporting by Robin Paxton, Conor Humphries, Anastasia Lyrchikova, Polina Devitt, Lyudmila Danilova and Tanya Mosolova; Writing by Robin Paxton; editing by Tim Pearce)
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