Mechanical Engineer 5 – NSSS Piping & Integration

NuScale Power

. Reporting to the Manager, NSSS Piping and Integration, this position performs design and analysis of the Nuclear Steam Supply System (NSSS) pipe systems in accordance with ASME BPVC Section III and applicable regulatory requirements.

Posted 4/3/2026full-timeCorvallis • Oregon • 🇺🇸 United StatesSeniorLead💰 $152,520 - $184,076 per yearWebsite

About the role

Key responsibilities & impact

Reporting to the Manager, NSSS Piping and Integration, this position performs design and analysis of the Nuclear Steam Supply System (NSSS) pipe systems in accordance with ASME BPVC Section III and applicable regulatory requirements.
This position is part of the NSSS design engineering organization that generates technical requirements and associated design parameters for the modular advanced light water reactor (ALWR) NSSS.
Utilizing proven state-of-the-art methodologies NSSS components are engineered to nuclear industry standards.
All work within the NSSS design organization is completed under ASME NQA-1 quality assurance requirements and respective U.S. Nuclear Regulatory Commission guidelines.
Possesses excellent knowledge in functional discipline and its practical application and has detailed knowledge of applicable industry codes, standards and regulations.
Performs complex piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping systems using the Bentley AutoPIPE computer program in accordance with the requirements of NB, NC, ND-3600, respectively.
Performs piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping components using the ANSYS computer program in accordance with the requirements of NB-3200.
Performs pipe support design and stress analysis of ASME BPVC Section III NF supports using hand calculations or ANSYS computer program.
Performs static and dynamic analysis including response spectrum and time history analysis to calculate stresses due to deadweight, thermal expansion, thermal gradients, seismic events, and fluid transients.
Prepare and review engineering specifications, drawings, CAD models, and other documentation that communicate the design and technical aspects of piping components associated with NSSS systems.
The development of Drawings and CAD models is based on collaboration with drafters and requires the engineer to reviews models that have been developed in Siemens NX.
Leads the evaluation of design solutions (piping re-route, reconfigurations of supports, etc ) which satisfy piping stress criteria.
Works on complex tasks in multiple and diverse areas.
Interprets scope and project requirements.
Acquires, maintains and develops training qualifications.
Provides oversight and mentoring to early career engineers in the area of piping stress analysis and/or pipe support analysis.

Requirements

What you’ll need

A minimum of a B.S. degree in Engineering, preferably Nuclear or Mechanical Engineering, from a four year ABET accredited college or university is required.
Advanced degree is preferred.
PE License in Mechanical or Nuclear Engineering is required.
Certifying Engineer experience to ASME BPVC Section III is required.
Minimum of 15 years of highly relevant, full-time engineering experience is required.
Experience with the qualification of piping systems including ball joints is desirable.
Subject Matter Expertise in one or more of the following areas: Engineering design and piping stress engineering analysis in the nuclear industry.
Bentley AutoPIPE or other comparable pipe analysis code.
ASME Section III Class 1, 2, and 3 piping systems (NB/NC/ND-3600) and/or piping supports (NF).
Eligible to work under Department of Energy 10 CFR Part 810.

Benefits

Comp & perks

Employee Benefits | NuScale Power

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Hard Skills & Tools

piping designstress analysisstatic analysisdynamic analysisresponse spectrum analysistime history analysishand calculationsengineering specificationsCAD modelingpiping reconfiguration

Soft Skills

mentoringcollaborationoversightcommunicationproblem-solving

Certifications

PE LicenseCertifying Engineer experience to ASME BPVC Section III