The official investigation Scrutiny , after most of the wreck was raised Cause_change_of_position_on_a_scale along with analysis of pieces of debris , concluded that the crew of Kursk was preparing GetReady to load Placing a dummy 65–76 `` Kit '' torpedo when a faulty weld in its casing leaked Motion high-test peroxide ( HTP ) , causing Causation the torpedo 's kerosene fuel to explode Bodily_harm .

In each case , only the detonator caps fired Use_firearm and the bombs themselves did not go off ; this may have been due to the low quality hydrogen peroxide used Using in the devices , which had been obtained Getting from a large number of easily available sources .