|
PGM-1 Pipe Gage Monitor
 Compact (6-1/2 in. x 20 in. maximum dimensions)- Lightweight detector/dewar package 8–10 lb stainless steel shroud 25 lb aluminum
shroud ~12 lb
- 1/4 in. Swagelock fittings for cooling end cap (optional)
- Foam-rubber insulation reduces shock
- External connections for in-situ LN2 refilling
- Military specification electrical connections
- Water resistant
- Available with Be or Al end cap
The ORTEC Pipe Gage Monitor (PGM-1) is designed to monitor fluid/vapor
density in nuclear reactor coolant piping. Other applications include activated corrosion
products monitoring, activation analysis of sulphur in coal slurry, and and stack
monitoring. In applications requiring high-resolution gamma-ray spectroscopy, such as
reactor coolant pipe monitoring, a high-purity germanium (HPGe) detector may be desirable.
However, all germanium detectors require liquid nitrogen (LN2) cooling to operate. A
special dewar (thermos vessel) was designed to fit the compact space requirements.The reactor coolant pipe is subject to temperatures of up to 650°F
within 0.5 inches of the detector window. To ensure adequate cooling protection under this
environment, a cooling coil is built into the stainless steel end cap to circulate cold
water as required. This small but rugged package is bolted to the coolant pipe via a
flange.
The liquid nitrogen is refilled periodically through a separate automated
filling system attached to the rear of the housing. The holding time of the LN2 dewar is
more than 16 hours. Electrical connections (preamp power, detector, H.V. bias, H.V.
cutoff, amplifier output, test pulser input) to and from the detector package are made
through a military specification connector. This compact (approximately 20-in. in length
and 6-1/2 in. in diameter maximum) rugged detector package can be operated either indoors
or outdoors.
|
