Deliberate or Accidental Misuse

Deliberate or accidental misuse is generally a fault on the part of the user - he or she is rather less likely to understand the material and its capabilities - but the supplier does need to make the limitations of the product known. The public has blind faith in tyres miming under-inflated and probably a high percentage of tyre problems are self inflicted. 

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The prior owner, Borden Chemical Company, conducted a process hazards analysis (PHA) of the reactor area in 1992. Borden did not implement the PHA recommendations related to the bottom block valve. The PHA recommended revisions to policies, procedures, and hardware for the reactor bottom valve interlock bypass. The focus was to reduce the potential for deliberate or accidental misuse of the bottom valve. 

Design error Inappropriate material Manufacturing fault Incorrect installation Unexpected service conditions Deliberate or accidental misuse. 

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