Environmental Engineering Reference
In-Depth Information
Table 2. Generalized working values of EIF of environment
Type of EIF and Measurements Unit
Working Values of EIF
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:
low value, °С
15
15
15
15
15
15
18
upper value, °С
60
60
30
30
60
30
27
Humidity:
low value, %
5
5
10
10
5
10
20
upper value:
% (at 15-30 °С)
100
90
75
75
90
75
80
g / m
3
(at 30-60 °С)
36
32
−
−
32
−
−
Barometric pressure:
low value, кPа
86
86
86
86
86
86
86
upper value, кPа
108
108
108
108
108
108
108
Ionizing γ-radiation (upper value):
Specific absorption rate, mGy / h
**
0,9
0,15
0,03
0,12
0,004
−
absorbed rate within 10 years, Gy
10
5
80
13
2,7
10,5
0,35
−
Concentration of corrosive agents*
(upper value), mGy / m
3
sulfur dioxide 10 10 10 10 10 10 10
hydrogen 10 10 10 10 10 10 10
nitrogen dioxide 10 10 10 10 10 10 10
hydrogen fluoride 1 1 1 1 1 1 1
hydrogen chloride 1 1 1 1 1 1 1
ammonia 35 35 35 35 35 35 35
Dust concentration (upper value), mg / m
3
: 1 1 1 1 1 1 −
* For groups of operation conditions Е.1.2 and Е.2.1 upper working values of concentrations of other corrosive agents can be additionally
defined. ** In case of location outside of technological boxes 30 mGy / h, in boxes 3 Gy / h
devices' location and in case of their lack of such
data - on the basis of generalized working values
for a group of location conditions, to which the
device is related (Table 8).
For devices, related to groups of location
conditions Р1.1, Р1.2 and Р1.3, requirements for
resistance to working values of mechanical EIF
are not standardized.
Resistance to mechanical EIF is confirmed
by results of tests for influence of sinusoidal vi-
brations and mechanical shocks. Degree of test
hardness is determined on the basis of a group
of location conditions, to which a tested device
relates, using Table 9.
Parameters of test actions for the specified
degree of test hardness are chosen according to
Table 10.
For each operating stand-alone device, con-
tained in peripheral equipment and SHC, a cat-
egory of earthquake resistance (I, II or III) is
determined on the basis of a role of performed
functions for safety and operability assurance
during and / or after earthquake.
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