News reports about Russian nuclear submarine fire state that the fire was extinguished after 24 hr fire fighting. The flames rose 10 m above the submarine. No radiation leak is reported. The reactor was shutdown and onboard weapons were removed before repairs. Nine persons were hospitalized for CO poisoning. It is stated that the fire could have started due to sparks from welding falling on wooden scaffolding and also the rubber coating on the submarine which helps in reducing the noise and prevent detection by enemies.
This incident is a lesson about safety measures to be taken during welding by removing all possible combustibles in the area (atleast 15 m around), cover combustibles which can't be moved with fire resistant cloth, keep atleast minimum number of fire extinguishers ready near the place of work, training to the concerned persons about hazards and safety measures to be followed and proper supervision.