Philip wrote:This supposed to be the first time in the history of naval annals that such an accident has happened.Some dubious record!
Did you research the annals of naval history before coming to the conclusion?
When I read your post, I decided to research the history of Naval Dockyard Accidents. Is IN incompetent? How does its record compare vis-a-vis other navies?
I'll start with dockyard accidents in our beloved Soviet Union http://www.johnstonsarchive.net/nuclear ... USSR1.html
An explosion occurred during refueling of the submarine K-431 at Chazhma Bay, Vladivostok. The K-431, completed around 1965 as unit K-31, was a Project 675 (Echo II) class submarine with two pressurized water reactors, each 70 MWt capacity and using 20% enriched uranium as fuel. (Note that some sources confuse this submarine with K-314, a Project 671 or Victor I class submarine launched in 1972 and withdrawn from service after a reactor accident in December 1985.) On 10 August 1985, the submarine was being refueled at the Chazhma Bay naval facility near Vladivostock. The submarine had been refueled and the reactor tank lid was being replaced. The lid was laid incorrectly and had to be lifted again with the control rods attached. A beam was supposed to prevent the lid from being lifted too far, but this beam was positioned incorrectly, and the lid with control rods were lifted too far up. At 10:55 AM the starboard reactor became supercritical, resulting in a criticality excursion of about 5x1018 fissions and a thermal/steam explosion. The explosion expelled the new load of fuel, destroyed the machine enclosures, rupturing the submarine's pressure hull and aft bulkhead, and partially destroyed the fuelling shack, with the shack's roof falling 70 meters away in the water. A fire followed which was extinguished after 4 hours, after which assessment of the radioactive contamination began. Most of the radioactive debris fell within 50-100 meters of the submarine, but a cloud of radioactive gas and particulates blew to the northwest across a 6-km stretch of the Dunai Peninsula, missing the town of Shkotovo-22, 1.5 km from the dock. The contaminated forest area was later surveyed as 2 square km in a swath 3.5 km long and 200-650 meters wide. Estimates initial radioactive release was about 2 MCi of noble gases and 5 MCi of other fission products, but most of this was short-lived isotopes; the estimated release inventory one hour after the accident was about 1000 Ci of non-noble fission products. In part because the reactor did not contain spent fuel, the fraction of biologically active isotopes was far smaller than in the case of the Chernobyl reactor accident.
Ten naval personnel were killed (8 officers and 2 enlisted men), probably by the explosion itself and not from radiation injuries. Radiation injuries were observed in 49 people, with 10 developing radiation sickness; the latter figure included mostly firefighters, some of whom sustained doses up to 220 rad external and 400 rem to the thyroid gland. Of the 2,000 involved in cleanup operations, 290 were exposed to high levels of radiation compared to normal standards.
High-level waste gathered during clean-up operations were placed in temporary disposal sites. Due to the rapid decay of most of the reactor products and the cleanup operations, some dockyard facilities were able to resume operations four days later. About two months post-accident the radioactivity in water in the cove was comparable to background levels, and 5-7 months post-accident the radiation levels were considered normal throughout the dock area. The damaged submarine was towed to Pavlovsk Bay and berthed there.
Royal Navy http://www.independent.co.uk/news/uk/ho ... 61361.html
A major nuclear incident was narrowly averted at the heart of Britain's Royal Navy submarine fleet, The Independent on Sunday can reveal. The failure of both the primary and secondary power sources of coolant for nuclear reactors at the Devonport dockyard in Plymouth on 29 July last year followed warnings in previous years of just such a situation.
Just like Sindhurakshak had a torpedo accident, so did the Royal Navy http://www.telegraph.co.uk/finance/news ... kyard.html
Military chiefs have launched a major investigation after a Royal Navy warship accidentally fired a torpedo at a nuclear dockyard. HMS Argyll was moored at Devonport Naval base in Plymouth when the 9ft missile suddenly shot out of its starboard side during a training drill. Workers watched in disbelief as the tube-shaped projectile flew through the air before blasting a hole in a security fence and slamming into a storage container. The torpedo was an unarmed version used for testing drills so it merely thudded into the metal container and did not explode. Nobody was hurt but shocked Navy bosses ordered an urgent investigation into the incident that took place inside a high security area where Britain's nuclear submarines are refuelled and repaired.
But lets get more specific. Do ships crash into dry docks? Lets take the Australian example here http://www.navy.gov.au/hmas-vendetta-ii
Vendetta's career commenced with an accident even before she was commissioned. On 18 July 1958, whilst leaving her berth at Williamstown Dockyard, she rammed the dry dock caisson gates, and remained trapped there for five hours. Disaster was only narrowly averted The frigate, Quickmatch, was under refit in the drydock, and if the dock gates had collapsed, she would have been swept aside by the torrent of water. Dockyard workers reacted swiftly to the emergency by flooding the dock, thus taking the pressure off the weakened caisson.
But Americans are much more better at data collection. You may want to go from Page 16 to 72 of naval accidents from 1945 to 1988https://fas.org/wp-content/uploads/2014 ... 5-1988.pdf
December 5, 1965 / A-4 / At Sea, Pacific: An A-4 aircraft loaded with one nuclear weapon rolled off the elevator of a U.S. aircraft carrier and fell into the sea. The pilot, aircraft, and weapon were lost. The incident occurred more than 500 miles from land.
Our TFTA neighbourhood navy too lost a submarine. Page 12
Pakistani midget submarine (2 Jan 1977)
03/17/45: A new submarine floods and sinks after a worker opens a torpedo tube at the Boston Navy Yard.