Nuclear power plants and reactors may be projected and installed in locations where vulnerability to surface subsidence, seismic shock and earthquake faults were insufficiently studied. Other ignored factors may include hazards to the environment from radioactively contaminated steam or gases, or contaminated solid or liquid residue disposal.
In 1994 the Austrian government protested to the USA concerning the use of their technology to complete a Soviet-style reactor in the Czech Republic near its border. It was argued that the basic design was flawed, the plan to modify it was unproven, and the risks had never been publicly examined.