Environmental Engineering Reference
In-Depth Information
1 (see Chapter 2). The same is classification of
the central part of this system - software-hardware
complex SHC RG&IC-R. Important to safety
operating stand-alone component parts of SHC
RG&IC-R related:
SHC RG&IC-R fulfills аll specified functions
after mechanical influence, which imitate project
earthquake (6 point), and functions emergency
reactor protection and monitoring of rod control
position after mechanical influence, which imitate
maximum calculation earthquake (7 point). Pa-
rameters of imitated influences (required response
spectrum) is given in Chapter 3.
Every deliverable complete set supplied from
three inter-redundant safe power sources by
three-phase alternating current with 380 / 220
V. Operating stand-alone component parts sup-
plied by direct current with 24 V power from two
independent inter-redundant sources (located in
secondary power cabinets, including in deliver-
able set), each of them receives energy from NPP
auxiliary power, or from two independent feeders
of single-phase alternating current network 220
V via no-break power supply.
Primary force power supply of RC drives is
performed from two power sections by three-phase
alternating current with 380 V and from redundant
direct current source with 110 V (accumulator
battery with charging device). Each drive is sup-
plied from the respective power control channel:
main - by alternating current with 144 V or 250 V
(related from type of RC drive), redundant - direct
current 110 V. For transformation of alternating
current primary power three-phase 380 / 144 V
or 380 / 250 V transformers are used. Allowable
long-term drifts of the alternating current power
are from minus 15% to plus 10%, frequency -
from minus 2% to plus 2% of the nominal value.
Power interruptions (time - to 20 ms) during com-
munication from one source to other, short drift
of power from minus 30% to plus 25% during 2
s and frequency from minus 5% during 10 s don't
lead to failures or necessity of restart or reload.
SHC RG&IC-R are immune to electromagnetic
external influencing factors (electromagnetic dis-
turbances), which can influence from power ports,
input and output ports, communication ports,
ground ports, from outer surface of device enclo-
sure. List of types of disturbance, parameters of test
•
Components which take part in emergency
reactor protection - to safety class 2(А);
•
Components which take part in accelerated
preventive protection, preventive reactor
protection PRP1, reactor power unloading,
reactor power automatic regulator, also аs
function of group control by operator com-
mands, - to safety class 3(B) (safety class
2 according to IEC, 2011);
•
Components which take part in preventive
reactor protection PRP2 and individual
control (if they are not ranged in more high
safety classes), - to safety class 3(C) (safety
class 3 according to IEC, 2011).
Operating stand-alone component parts SHC
RG&IC-R destined (see Chapter 3):
•
For operating in the rooms of electrical
equipment's and software-hardware com-
plexes normally access area (group of op-
eration conditions E2.2), except devices,
installed in the rooms with air condition
(MCR, ECR, etc.), which belong to E2.3
group of operation conditions;
•
For setting on the building constructions in
case of absence of closely-spaced sources
of mechanical inluences (group of loca-
tion condition P1.1), except devices of
manual input and displaying, set on sup-
porting constructions (panels or boards),
which belong to Р.1.2 group of location
condition;
•
For operating in rooms with electromag-
netic environment of medium hardness in
compliance with NP,2000.
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