Environmental Engineering Reference
In-Depth Information
Table 3. A comparison of different classifications of I&C systems
National or International
Standard, Object of
Classification
Classification by the Importance to Safety
IAEA SSR-2/1,
IAEA NS-G-1.3, Systems
Important to safety Not
important to safety
Safety Safety related
IEC 61226
Important to safety
Functions
Safety
Safety related
No direct safety role
Unclassified
Category A
Category B
Category C
European utility
requirements
F1A
F1B
F2
Unclassified
IEC 61513
Important to safety
Not important to safety
Unclassified
Functions
Category A
Category B
Category C
Systems
Class 1
Class 2
Class 3
Unclassified
Germany
Important to safety
Not important to safety
Unclassified
Unclassified
Functions
Systems
Category A
Category B
Category С
Class 1
Class 2
Class 3
United Kingdom
Function
Systems
Important to safety
Not important to safety
Unclassified
Unclassified
Category A
Category B
Category С
Class 1
Class 2
Class 3
France Nº4
Important to safety
Not important to safety
Systems
1E
2E
SH
Important to
safety
-
Switzerland
Functions
Important to safety
Not important to safety
Unclassified
Category A
Category B
Category С
Ukraine(draft of regulation)
Functions
Systems
Important to safety
Not important to safety
Unclassified
Class 4
Category A
Category B
Category С
Class 2(A)
Class 3(B)
Class 3(С)
Ukraine(acting)
Systems
Important to safety
Not important to safety
Class 4
Class 2
Class 3
Russia
Components
Functional groups
Important to safety
Not important to safety
Class 4
Category К4
Class 2
Class 3
Category К1
Category К2
Category К3
Canada
Category1
Category2
Category3
Category4
Japan
PS1/MS1
PS2/MS2
PS3/MS3
Non-nuclear safety
Republic of Korea
IC-1
IC-2
IC-3
USA and IEEE
Important to safety
Non-nuclear safety
Safety
Class 1E
No name assigned
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