Soviet Submarine K-278 Komsomolets - Environmental Threat

Environmental Threat

In addition to her eight standard torpedoes K-278 was carrying two torpedoes armed with nuclear warheads. Under pressure from Norway, the Soviet Union used deep sea submersibles operated from the oceanographic research ship Akademik Mstislav Keldysh to search for K-278. In June 1989, two months after the sinking, the wreck was located. Soviet officials stated that any possible leaks were insignificant and pose no threat to the environment.

Examination of the wreck in May 1992 revealed cracks along the entire length of the titanium hull, some of which were of 30-40 centimetres (12-16 inches) wide, as well as possible breaches in the reactor coolant pipes. An oceanographic survey of the area in August 1993 did suggest that waters at the site were not mixing vertically, and thus the sea life in the area was not being rapidly contaminated. That survey also revealed a hole over six metres (20 feet) wide in the forward torpedo compartment.

An expedition in mid-1994 revealed some plutonium leakage from one of the two nuclear torpedoes. On 24 June 1995, Keldysh set out again from St. Petersburg to the Mike datum to seal the hull fractures in Compartment 1 and cover the nuclear warheads, and declared success at the end of subsequent expedition in July 1996. The Russian government has declared the risk of radioactive contamination of the environment negligible until 2015 or 2025.

In 1993, Vice Admiral (ret.) Chernov, commander of the submarine group of which the Komsomolets was part, founded the Komsomolets Nuclear Submarine Memorial Society, a charity to support the widows and orphans of his former command. Since then, the Society's charter has expanded to provide assistance to the families of all Soviet and Russian submariners lost at sea. Also, 7 April has become a day of commemoration for all submariners lost at sea.