Demetrius Siachames, P.E. Email and Phone Number
My experience is split between time I spent in the Navy as a Nuclear Propulsion Officer, and as an engineering consultant. In the Navy, I managed teams of people to accomplish operation, maintenance and repair of communications and nuclear systems onboard the USS DeWert and the USS Enterprise. As an engineering consultant, I have worked on a wide range of projects including thermal hydraulic modeling of power plants, Navy Firefighting guidance, and management of a 20+ person team of engineers for high value upgrades to a DOE test reactor facility.Specialties: I currently specialize in Program management, mechanical design, and nuclear safety analyses.
Sparta Biomedical
View- Website:
- sparta-biomedical.com
- Employees:
- 5
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Vice President And Head Of EngineeringSparta BiomedicalRaleigh, Nc, Us -
Vice President/Head Of EngineeringSparta Biomedical Aug 2023 - PresentMorrisville, North Carolina, United States -
Director Of EngineeringSparta Biomedical Feb 2022 - Aug 2023Morrisville, North Carolina, United StatesLeading the engineering effort developing implants that improve patient quality of life. -
OwnerSigma Expert Solutions Jul 2018 - PresentRaleigh-Durham, North Carolina AreaProvide consulting on project and program management for capital projects, primarily for government nuclear facilities. -
Lead Engineer / Project Manager / Client ManagerMpr Associates Mar 2008 - Jul 2018Alexandria, Virginia, United StatesActed as a Client Manager for projects performed at a national laboratory, Project Manager for a broad range of projects, and Lead Engineer in the areas of safety analysis, mechanical design, and manufacturability reviews. Range of experience includes thermal hydraulic analysis, structural analysis, mechanical design, regulatory compliance, fire protection, capital improvement projects, and project risk management and anlaysis. Managed over $2.5M of engineering resources with a peak… Show more Acted as a Client Manager for projects performed at a national laboratory, Project Manager for a broad range of projects, and Lead Engineer in the areas of safety analysis, mechanical design, and manufacturability reviews. Range of experience includes thermal hydraulic analysis, structural analysis, mechanical design, regulatory compliance, fire protection, capital improvement projects, and project risk management and anlaysis. Managed over $2.5M of engineering resources with a peak management responsibility of over 28 engineers simultaneously for a national lab. Work entailed safety basis updates, capital improvement conceptual designs, engineering software upgrades, peer reviews, and long term capital improvement planning.Performed mechanical design, design reviews, and testing for prototype medical products. Listed as co-inventor on patents for a medical device. Performed thermal and structural analysis in support of the first planned landing of the Joint Strike Fighter on a Navy amphibious war ship. Analysis resulted in the recommendation of replacement of key fire protection equipment and design of shielding for other equipment. Acted as lead analyst when interfacing with the Navy on topics of thermal loading, instrumentation, and shipboard testing.Designed and participated in testing of shipboard eductors to determine root cause failure of a ship system. Work resulted in changing eductor designs which performed satisfactorily on shipboard testing.Analyzed water hammer events for commercial nuclear power plants in response to GL 96-06 using MPR proprietary software. Analysis resulted in continued operation of the nuclear power plant without the necessity of shutting down and venting injection systems.Performed a pilot project at a commercial nuclear power plant to determine margin of the class 1E electrical system (safety related) where discrepancies were discovered and corrected prior to NRC discovery. Show less
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Mechanical Division Officer/ Propulsion Plant Watch OfficerUss Enterprise (Cvn Mar 2006 - Feb 2008Led and supervised 40 Sailors during the operation and maintenance of 2 engineering spaces including main propulsion equipment and auxiliary power and water systems. In charge of propulsion plant operations during steaming and shutdown periods. Selected to be 1 of 12 officers to be a Propulsion Plant Watch Officer during the Operational Reactor Safety Exam, a comprehensive examination evaluating the ability for nuclear operators to operate, administer, and combat casualties on Nuclear Powered… Show more Led and supervised 40 Sailors during the operation and maintenance of 2 engineering spaces including main propulsion equipment and auxiliary power and water systems. In charge of propulsion plant operations during steaming and shutdown periods. Selected to be 1 of 12 officers to be a Propulsion Plant Watch Officer during the Operational Reactor Safety Exam, a comprehensive examination evaluating the ability for nuclear operators to operate, administer, and combat casualties on Nuclear Powered Platforms. Show less
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Assistant Operations Officer And Cryptological CustodianUss Dewert (Ffg-45) May 2003 - Nov 2005Managed 15 technicians who maintained the ship's communications equipment including satellite and computer systems. Assisted the Operations Officer in scheduling and organizing ship's mission during a deployment. Catalogued and maintained custody of hundreds of pieces of cryptological equipment and software up to the Top Secret Level.
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Mae 416 Lab Teaching AssistantNorth Carolina State University Sep 2000 - May 2002Was responsible for the training and oversight of Mechanical Engineering seniors during Senior Design. Specialized in training of machining operations with conventional mills and engine lathes. Did limited training in welding.
Demetrius Siachames, P.E. Education Details
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Naval Nuclear Power SchoolNuclear Power -
Aerospace Engineering And Mechanical Engineering
Frequently Asked Questions about Demetrius Siachames, P.E.
What company does Demetrius Siachames, P.E. work for?
Demetrius Siachames, P.E. works for Sparta Biomedical
What is Demetrius Siachames, P.E.'s role at the current company?
Demetrius Siachames, P.E.'s current role is Vice President and Head of Engineering.
What schools did Demetrius Siachames, P.E. attend?
Demetrius Siachames, P.E. attended Naval Nuclear Power School, North Carolina State University.
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