Environmental Engineering Reference
In-Depth Information
rod selected for individual control; number
of the main and auxiliary groups moved in
the design order.
• During testing: Forming of protocols for
each CR and general protocol for all CR
with pointing:
◦ Electromagnet current in control rod
drives (with dispersion indices);
◦ Average CR movement speed for up-
wards and downwards movement;
◦ Distance, passed CR from ULS to
LLS, between from LLS and ULS
and of each section of operating
stroke range;
◦ Height of each CR movement section
of operating range;
◦ Quantity of CR double strokes and
drops;
• Archiving of data on SHC RG&IC-R and
CR performance in operating modes and
during testing (general duration and quan-
tity of double strokes within traveling oper-
ating stroke range, quantity of CR drops by
protection commands, given by the operat-
ing personnel manual control commands,
etc.);
Additional Functions
• After power switch-on and during opera-
tion: Automatic diagnosis, archiving and
continuous displaying of diagnostic in-
formation on SHC RG&IC-R technical
condition, its parts, interconnecting lines,
control rod drives and sensors of control
rod position, detection of failure places or
defects appearance, sending of generalized
signal on SHC RG&IC-R failure in CIS
and to the indicator in MCR;
• During operation and testing (drop of CR):
Automatic monitoring, archiving and dis-
playing (upon personnel's request) of each
CR parameters, which characterize:
◦ Delay of CR drop start (from sending
of the respective command to SHC
RG&IC-R input or disconnecting of
power supply until CR get from upper
limit switch position;
◦ Full falling time of CR from upper
limit switch position to lower hard
support and transmission time of each
section of operating stroke range;
◦ Delay of CR leaving of lower limit
switch: From sending of B↑ com-
mand to SHC RG&IC-R input un-
til the moving CR reach the low
limit of operating stroke range (LLS
position);
◦ Transmission time of the moving
CR for each section of operating
stroke range while upwards (by B↑
command) and downwards (by D↓
command) movement, the whole
transmission time of CR within the
operating stroke range between LLS
and ULS;
•
Synchronization of SHC RG&IC-R cur-
rent time with NPP universal time system
data.
Functions, which provide emergency reactor
protection belong to A category, CR retention
functions, accelerated preventive protection,
preventive reactor protection, reactor power un-
loading, reactor power automatic regulator and
power change by the operator's commands— to
В category (see Chapter 2).
CHARACTERISTICS
Rod group and individual control system combine
fulfilling of safety functions with safety related
functions (functions of normal operation, in terms
of Ukrainian regulation NP, 2008,a) and related to
safety class 2(А) (in Ukrainian documents), which
coordinate, according to IEC, 2011, to safety class
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