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proTK™
Neutron Flux Instrumentation
PROTK™
Neutron Flux Monitoring System
The neutron ux monitoring system proTK™ com-
bines long term experience in design and manu-
facturing of both detectors and signal processing
electronics. These products are strictly oriented to
the highest level of safety relevance and reliability and
are quali ed by several type tests and proven by an
excellent operational experience.
The system proTK™ covers the requirements for
measuring equipment used for the reactor protection
system according to IEC 61226 cat A.
FEATURES
● Modular construction
● Versatile applications
● Robust and reliable in operation
● Type tested
● Proven by operational experience
APPLICATIONS
• Operational process monitoring
○ Measurement and monitoring of the neutron ux
density from start-up range to the power range for
research reactors and power reactors
RELATED PRODUCTS
• Neutron detectors: e.g. BF3-counters and
ionization chambers
• Cables: mineral insulated and super screened
• Digital signal processing channels for start-up and
power range
radiation monitoring
systems
A Mirion Technologies Division
Featuring:
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proTK™
Neutron Flux Instrumentation
NEUTRON FLUX RANGES
The tables show the combinations of detectors and signal processing electronics for the different types of reactors
and the usual ranges:
Type of
Reactor
Pressurized water reactor
Boiling water reactor
(PWR) & research reactors
(BWR)
Neutron Flux Range Code Detector Signal Processing
Electronics
Start-up Channel
DAK 250-i
Start-up Channel
DAK 250-g
Wide Range Channel
DWK 250
Power Range Channel
DGK 250
Channel DLK 250
Start-up Channel
DAK 250-i
Wide Range Channel
DWK 250
Wide Range Channel
DWK 250
Local Power Range
Channel DSK 250
Average Power Range
Channel DMK 250
Start-up
range
Power
range
Start-up
range
Power
range
Position Type
Pulse
range *
Intermediate
range *
Wide range WRM Excore
Power range PRM Non-compensated
Flux
distribution
monitoring
Pulse
range *
Intermediate
range *
Wide range WRM Wide range
Local
power range
Average
power range
SRM
IRM Compensated
Ex-core
In-core
SRM
IRM AC mode
In-core
LPRM DC mode
APRM - (Signals of all
B10- or BF3-
proportional
counter
ionization chamber
KNK 50 SAC
wide-range
ssion chamber
ionization chamber
KNU 50
SPN-detector Power Distribution
Pulse mode
ssion chamber
ssion chamber
ssion chamber
ssion chamber
DSK 250)
Quantities
2 ... 3
channels *
2 ... 4
channels *
3 ... 4
channels
8 ... 16
detectors,
4 DGK
24 ... 48 det.
3...6 DLK
3 ... 4
channels *
3 ... 4
channels *
3 ... 4
channels
80-192
detectors,
20-48 DSK
3 ... 4
channels
* may be replaced by wide range Sensing Systems Radiation Monitoring Systems
Division products Division products
Measuring ranges
of the neutron fl ux
instrumentation.
Example for the
PWR
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proTK™
Neutron Flux Instrumentation
NEUTRON DETECTORS
BF3 Neutron Counters (1’’) e.g. WL 23057
• Proportional counter tubes for the pulse range
• High sensitivity due to lling with enriched BF3 gas
• 1’’ (25.4 mm) diameter
• Proven construction
• Large measuring range
• Very low gamma sensitivity
• Manufactured by Mirion Technologies (IST) Corpo-
ration
Neutron Ionization Chambers KNK/KNU 50
• For intermediate range and power range
• Ionization chambers coated with enriched B10
• Simple and rugged construction
• Saturation proof
• Large and steady sensitive length
• Output signal: DC current starting at 1 pA
• Compensation of gamma radiation (KNK 50)
• LOCA proof (KNK 50 SAC)
SPN-Detectors e.g. WL 23215
• For in-core power distribution monitoring
• No detector supply voltage required
• 1.6 mm diameter
• Proven construction
• Large measuring range up to 1e15 nv
• Output signal: DC current
• Very low gamma sensitivity
• Manufactured by Mirion Technologies (IST) Corpo-
ration
DIGITAL SIGNAL PROCESSING CHANNELS
Digital neutron ux monitoring channels system
TK 250 are characterized by ef cient functions, useful
procedures for periodical testing, a comfortable
operators menu structure and a rugged operational
behaviour. Hardware and software are arranged in
modules. The internal multiprocessor structure offers
the exibility of reducing the region of highest safety
relevance to a small, separated part within the channel.
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proTK™
Neutron Flux Instrumentation
The signal processing system TK 250 includes neutron ux monitoring channels for BWR and PWR, and for research
reactors, which are designed and quali ed for applications within the reactor protection system:
DAK 250 Digital Start-Up Channel
● For the pulse range (DAK 250-i) with pulse detec-
tors and for the intermediate range (DAK 250-g) with
ionization chambers with linear or logarithmic output
signal and reactor period signal, optional module for
reactivity calculation
DGK 250 Digital Power Range Channel
● For processing and numeric calibration of one or two
signal paths with boron coated ionization chambers
DSK 250 Local Power Range Channel
● With four signal paths for in-core ssion chambers in
the BWR
DWK 250 Digital Wide Range Channel
● For combination of pulse and Campbell (RMS) signal
processing together with in-core (BWR) or ex-core
(PWR) ssion chambers with pulse, intermediate, and
wide range ux signal and reactor period signal
DLK 250 Power Distribution Channel
● For monitoring the in-core ux distribution in PWRs
with three or six signal paths for in-core SPN-detectors
DMK 250 Average Power Range Channel
● Together with the DSK 250 for the average ux and
ow related ux calculation in the BWR and for core
oscillation monitoring
Architecture of TK 250
signal processing channels
for neutron fl ux monitoring
Mirion Technologies (MGPI) SA
Route d’Eyguières
FR-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T +1 770 432 2744
F +1 770 432 9179
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T +49 (0) 89515 13-0
F +49 (0) 89515 13 169
www.mirion.com
145023EN-C
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T +86 21 6180 6920
F +86 21 6180 6924
Since norms, speci cations and designs are subject to occasional change, please ask for con rmation of the information given in this publication.
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