Here are two sets of guidelines, sponsored by the Nuclear Pools' Forum (NPF), and developed by Steering Committees representing nuclear pools throughout the world:

• International Guidelines for the Fire Protection of Nuclear Power Plants
  The Fire Protection Guidelines focus on critical aspects of fire prevention and protection, including a station's fire protection program, general plant design, systems and machinery, fire brigade and considerations for specific areas of the nuclear power plant. 
• International Guidelines for Machinery Breakdown Prevention at Nuclear Power Plants
  The Machinery Breakdown Guidelines emphasize the important attributes of key programs, including administration and maintenance, and describes operating hazards, inspections and testing requirements for specific equipment and systems.

For more detailed information about either of these sets of guidelines, or to access Japanese versions, click either the Fire Protection or Machinery Breakdown Prevention button at the left.