Reactor Vessel Bottom Head Drain Plug 


The Preferred Engineering Reactor Vessel Bottom Head Drain Plug was developed to facilitate non-isolatable activities associated with the RPV drain piping. The RPV Drain Plug permits the performance of downstream piping and valve maintenance without the need to drain the vessel or the use of freeze seals. We supply the plug as Safety Related with Seismic Calculations.  


  • Polished stainless steel weldment for ease of decontamination.  

  • Installed from the refueling platform using the jet pump grapple.  

  • The Upper Plug Guide and Lower Plug Tube Guide allow for quick and accurate installations.  

  • The Plug Actuation Hex Drive provides reliable actuation of the seal.