Manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
SGLM 201K
Special Monitors
SGLM 201K
Steam Generator Leak Rate Monitor
The SGLM 201K forms part of the RAMSYS product
line. It has been developed for steam generator leak
rate monitoring. The
16
N count rate is measured by a
scintillation detector (NaI).
The detector is installed in close proximity to the main
steam line and it is thermally insulated to protect it
from sharp temperature transients. The conversion
from
16
N count rate to volumetric activity is done
utilizing coef cient established through Monte Carlo
analysis.
The conversion from
16
N volumetric activity to leak
rate (in GPD) is calculated using four correlations. The
correlations are derived by thermohydraulic transport
analysis based upon data provided by the user.
APPLICATIONS
• Barrier leak control
○ Secondary circuit monitoring
RELATED MONITORS
• SGLM 202K: version with lead shield for WWER
nuclear power plants
FEATURES
●
16
N monitoring when reactor power exceeds 25%
● Gross gamma energy monitoring when reactor
power < 25%
● Spectrum stabilization against temperature and aging
drifts
● 16 con gurable windows over the measurement range
● 1024 channels analysis
● Available with or without display and local signaling
● Seismically quali ed
● More than 500 SGLM channels in operation worldwide
● De ned for mild environment conditions