|
|
Just for the record: the theory of sabotage by a disgruntled employee was proposed by Dr. Ashok Kalelkar in an report commissioned by Union Carbide. The employee has never been named, and Union Carbide never offered any evidence in court to support the theory.
The accident was caused by an inflow of water and impurities into tank 610. To quote the Amnesty International report:
However, there has been more than one explanation of how the water and other impurities entered the MIC storage tank. One theory, argued by workers at the plant, is that it occurred during routine water washing of pipes on the evening of 2 December during the second shift of production on which there was no longer a maintenance supervisor due to staff cuts.As several bleeder lines were clogged, water began to back up in the system and pushed through a leaking valve into the relief valve vent header (RVVH). It then fell into a jumper line which ran between the RVVH and the process vent header (PVH) which had been installed in May 1984 with the authorization of UCC engineers.148 One valve remained to protect Tank 610, the nitrogen outflow valve, but this was known to be leaking as engineers had been unable to pressurize the tank on 26 November.
Sabotage is unlikely and unsubstantiated, and even if it *did* occur, Union Carbide failed to observe basic safety, used unproven technology and - and this is not something to lose sight of - observed a very different standard of safety than they did in plants involving white, English-speaking people. |
|
|