Paschal Solutions, Inc.
Office Location:
710 South Illinois Ave
Suite F-104
Oak Ridge, TN 37830

Mailing Address:

P.O. Box 71346

Knoxville, TN 37938

Phone: 865.300.5614

Fax: 888.533.4490

Copyright ©  Paschal Solutions, Inc

Providing Safe and Efficient Engineering Solutions

DUNS Number: 037362220
CAGE Code: 1WHJ9

NAICS CODES: 541330, 541611, 541690, 541712, 541990, 562910



PSI engineers include individuals experience with the broad range of applications for dose rate calculations and shielding analyses.  Our staff includes individuals with decades of experience in the areas of health physics and radiation protection, as well as nuclear engineering support for analyses of criticality accident alarm systems (CAAS).   We have developed the technical basis for those systems under NRC and DOE.  For example, recent work includes the extensive use of MCNP6 to provide the complete technical basis for the CAAS design for all facilities being designed for the UPF project in Oak Ridge, TN.  The analyses involve robust application of variance reduction methods in MCNP6 to establish:

  • detector placement according to ANSI/ANS-8.3 requirements to detect the minimum accident of concern,

  • the dose profiles inside and outside facilities to support emergency planning and immediate evacuation,

  • the radiation tolerance of the system given the maximum anticipated yield and worst-case location.

PSI personnel have experience with the design and implementation of legacy CAAS systems, Canberra systems, and CIDAS systems.