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Building Energy Regulatory Analysis Group

Crystal Mullen

Crystal Mullen

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Crystal Mullen has 10+ years of technician and design work experience in turning concepts into working designs with her expertise in utilizing a variety of design/solid modeling platforms. As part of the design process, Ms. Mullen produces part and assembly models, drawings, animations, and/or photo renders for fabrication, procurement, and presentation and follows the design through the building process to completion with "as-built" design packages as required. She has a broad base of design experience from high precision detector systems deployed in mobile and harsh environments to equipment and facilities to de-neutralize chemical weapons. Ms. Mullen is a Certified SolidWorks Professional and her proficiency with SolidWorks allows her to train users, maintain a group share SolidWorks vault of drawing and models under revision control, and collaborate real time with many worldwide organization users on SolidWorks projects. Ms. Mullen has developed a special expertise in the design of structural weldments during her previous employment at Parsons.

Research Interests

  • Solid Modeling Design - From initial prototyping to final design of components or systems. Key capabilities include fit & function assessments as well as providing 3D renderings and automations of designs.
  • Mechanical/Structural/Electrical Design - Integration of the various engineering disciplines into the design and production models and drawings.
  • Welding Design – Assessment of welding requirements and providing detailed weldment drawings.
  • Drafting/Documentation - Providing detailed design documents for review, presentation, design packages, fabrication, "as-built", reports, and similar. Conversion between 2D/3D designs and models.
  • Project Teaming - Leading modeling design efforts utilizing various collaboration tools to transmit design updates and revision control between team members at various remote locations worldwide.
  • Computer Skills:
  • SolidWorks 2014 back to 1999 including PhotoView 360, Motion, Workgroup PDM collaboration tool
  • Auto CAD 2012 back to r12

Education and Credentials

  • CSWP Advanced Drawing Tools Specialist (February 2013)
  • CSWP Advanced Weldments Specialist (May 2011)
  • Certified SolidWorks Professional (January 2006)
  • AA General Studies, Columbia Basin College (1999)

PNNL Publications


  • Erchinger J., J.L. Orrell, C.E. Aalseth, B.E. Bernacki, M. Douglas, E.S. Fuller, and M.E. Keillor, et al. 2017. "Background Characterization of an Ultra-Low Background Liquid Scintillation Counter." Applied Radiation and Isotopes 126. PNNL-SA-120443. doi:10.1016/j.apradiso.2017.01.032


  • Douglas M., B.E. Bernacki, J.L. Erchinger, E.C. Finn, E.S. Fuller, E.W. Hoppe, and M.E. Keillor, et al. 2016. "Liquid Scintillation Counting of Environmental Radioisotopes: A Review of the Impact of Background Reduction." Journal of Radioanalytical and Nuclear Chemistry 307, no. 3:2495-2504. PNNL-SA-108301. doi:10.1007/s10967-015-4512-8


  • Bernacki B.E., M. Douglas, J.L. Erchinger, E.S. Fuller, M.E. Keillor, S.M. Morley, and C.A. Mullen, et al. 2015. "Optical Design Considerations for Efficient Light Collection from Liquid Scintillation Counters." Applied Optics 54, no. 9:2413-2423. PNNL-SA-104952. doi:10.1364/AO.54.002413
  • Erchinger J.L., C.E. Aalseth, B.E. Bernacki, M. Douglas, E.S. Fuller, M.E. Keillor, and S.M. Morley, et al. 2015. "Development of a low background liquid scintillation counter for a shallow underground laboratory." Applied Radiation and Isotopes 105. PNNL-SA-108085. doi:10.1016/j.apradiso.2015.08.027
  • Erchinger J.L., J.L. Orrell, C.E. Aalseth, B.E. Bernacki, M. Douglas, E.C. Finn, and E.S. Fuller, et al. 2015. "Development of an Ultra-Low Background Liquid Scintillation Counter for Trace Level Analysis." In Institute of Nuclear Materials Management 56th Annual Meeting, July 12-16, 2015, Indian Wells, California. Deerfield, Illinois:INMM. PNNL-SA-110951.



  • Runkle R.C., M.J. Myjak, S.D. Kiff, D.E. Sidor, S.J. Morris, J.S. Rohrer, and K.D. Jarman, et al. 2009. "LYNX: An unattended sensor system for detection of gamma-ray and neutron emissions from special nuclear materials." Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment 598, no. 3:815-825. PNNL-SA-61971.


  • Runkle R.C., M.J. Myjak, M.T. Batdorf, R.S. Bowler, S.D. Kiff, S.J. Morris, and C.A. Mullen, et al. 2008. "Unattended sensors for nuclear threat detection." In Chemical, Biological, Radiological, Nuclear and Explosives (CBRNE) Sensing IX, edited by Augustus Way Fountain III and Patrick J. Gardner, 6954, 69541A-1 - 69541A-8. Bellintham, Washington:SPIE. PNNL-SA-59281. doi:10.1117/12.776399

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