Sentence 4.5.7.2.(3)

  1. OS1
  2. OP1
  3. OH5
  4. OP1
  5. OS1
  6. OH5

Objective

OH5 Hazardous Substances Containment

Attribution

[F04,F20-OH5]Applies to the requirement for steel shut-off valves.

Intent

Intent 1:

To limit the probability that internal stress or mechanical damage will lead to failure of the valves, which could lead to the escape and spread of liquid, which could lead to harm to the public.

Intent 2:

To limit the probability that exposure of the valves to fire will lead to failure of the valves, which could lead to the escape and spread of liquid, which could lead to harm to the public.

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