Features and Benefits

Our SRM is a fission-counting device that operates from below the source level to 10⁹ nv, or approximately 10^-3 percent of the rated power. As the reactor power level exceeds the range in which the SRM can count neutron counts individually, a drive mechanism withdraws the detector from the reactor core to a storage location below the active fuel region. Then the IRM begins to generate output and is used to control the reactor operation up to approximately 10 percent of the rated reactor power. After the power level exceeds the range of the IRM, it is removed and stored. The IRM is a fission chamber that uses a voltage variance (Campbell) method and operates from 10⁸ to 1.5 x 10¹³ nv, or approximately 10 percent of the rated reactor power. 10¹³

• Ability to withdraw the detectors as the reactor flux exceeds the startup and intermediate range prolongs sensor life and lengthens overlap between SRM and IRM channels and IRM and LPRM channels respectively.
• The IRM sensor's lifespan averages eight years based on 1 e17 nvt per startup/shutdown cycle and five cycles per year.

Related Offerings

• Startup/Wide Range Detectors (SRNM/WRNM)
• Power Range Detectors (LPRM)
• Traversing In-Core Probes (TIPs)
• Dry Tube Assemblies
• TIP/SRM/IRM Mechanical Drive Equipment
• Undervessel Equipment
• Gamma Thermometers
• CRD Position Indicator Probes
• Moveable In-Core Detectors

For More Information

Contact one of these resources:

Commercial Operations
Call: Fred Askins at:
+1 330-963-2314
Send email to: frederick.askins@ge.com

Call: William Stringer at:
+1 330-963-2292
Send email to: william.stringer@ge.com

Global Sales
Call: Warren Phelan at:
+1 330-963-2458
Send email to: warren.phelan@ge.com

Product Line Leader
Call: Dan Waltermire at:
+1 330-963-2311
Send email to: dan.waltermire@ge.com

Call: Garrick Joseph at:
+1 330-486-0545
Send email to: garrick.joseph@ge.com

For existing order and shipment status
Call: Dianah McDonald at:
+1 330-963-2465
Send email to: dianah.mcdonald@ge.com