Environmental Engineering Reference
In-Depth Information
Table 3. Generalized limiting values of EIF of environment for the group of operation conditions Е.1.1
Type of EIF and Measurements Unit
Limiting Values of EIF for a Mode
А
B
C
D
E
Temperature (upper value), °С
75
90
150
60
60
Rate of change of temperature (upper value),°С / h
5
10
20
−
−
Humidity (upper value at an upper temperature value), %
100
steam-gas mixture
−
−
Barometric pressure:
low value, кPа
50
86
86
50
−
upper value, кPа
130
180
560
130
560
Ionizing γ-radiation:
Specific absorption rate, Gy / h
1,0
1,0
10
3
1,0
−
absorbed rate, Gy
15,0
5,0
10
4
0,7·10
3
−
Duration (upper value), h
15
5
10
720
24
Note. Conventional symbols of modes: А - violation of heat removal from containment; B - small leak; C - maximal leak; D - post-
accident mode (effects of a small and maximal leak); E - checking of leak resistance
Table 4. Generalized limiting values of EIF of environment for groups of operation conditions Е.1.2,
Е.1.3, Е.1.4, Е.2.1, Е.2.2, Е.2.3
Type of EIF and Measurements Unit
Working Values of EIF
for a Group of Operation Conditions
Е.1.2
Е.1.3
Е.1.4
Е.2.1
Е.2.2
Е.2.3
Temperature (upper value), °С
75
50
50
75
50
40
Rate of change of temperature (upper value),°С / h
10
5
5
10
5
5
Humidity (upper value at an upper temperature value), %
steam-gas mixture
98*
100
98*
90
Barometric pressure (upper value), кPа
130
130
−
−
−
−
Mode duration, h
5
3
2
3
2
2
* Without moisture condensation Note. Limiting values of EIF are defined: - for groups Е.1.2 and Е.2.1 - leak of technological
equipment; - for a group Е.1.3 - line break from technological equipment to sensors; - for groups Е.1.4 и Е.2.2 - ventilation disconnection; -
for a group Е.2.3 - conditioning system failure
Table 5. Degrees of test hardness of resistance to EIF of environment
EIF Type
Degrees of Test Hardness for a Group of Operation
Conditions
Е.1.1
Е.1.2
Е.1.3
Е.1.4
Е.2.1
Е.2.2
Е.2.3
Temperature
4
3
2
2
3
2
1
Relative humidity
4
3
2
2
3
2
1
Barometric pressure
2
1
−
−
−
−
−
Ionizing radiation
4
3
2
1
2
1
−
Note. Sign “-“ means that tests are not executed
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