Nuclear Engineer V, Electrical System OneNuclear Engineer V, ElectricalPerry, OHThe successful candidate will have extensive nuclear industry experience and the ability to independently manage engineering assignments while providing technical leadership and mentoring to junior engineers. System One is seeking experienced Nuclear Engineer V – Electrical professionals to support major power plant upgrade, modification, and modernization projects at commercial nuclear facilities.
Nuclear Engineer V, I&C System OneNuclear Engineer V, I&COak Harbor, OHThis senior-level engineering role will lead complex I&C design efforts, provide technical oversight, and support the implementation of digital and analog control systems within commercial nuclear facilities. The ideal candidate will possess extensive nuclear industry experience, strong technical leadership skills, and a proven track record delivering engineering solutions in regulated nuclear environments.
Nuclear Engineer V, Mechanical System OneNuclear Engineer V, MechanicalPerry, OHThis role is ideal for a senior mechanical engineer with deep PWR/BWR plant knowledge, strong design modification experience, and a proven ability to improve plant safety, reliability, and performance. Perform engineering calculations, feasibility studies, and technical evaluations to resolve equipment reliability concerns and improve overall plant performance.
Avionics Engineer B-2 Div (WBZ) 01.6.14/15 CredenceAvionics Engineer B-2 Div (WBZ) 01.6.14/15Wright-Patterson Air Force Base, OHMust have an ABET accredited Master’s or Doctorate Degree in a related field and ten (10) years of experience in the respective technical/professional discipline being performed, five (5) years of which must be in the DoD; OR must have an ABET accredited Bachelor’s Degree in a related field and twelve (12) years of experience in the respective technical/professional discipline being performed, five (5) years of which must be in the DoD; For engineering positions, must have successfully completed an undergraduate degree with a major in engineering from a college or university with an ABET-accredited engineering program for the degree requirements of the position, such as electrical, mechanical, or aerospace engineering. Assist in producing or reviewing technical evaluations/plans; engineering studies, reports, and analyses; acquisition strategies/plans; ICD; CDD; CONOPS; CPD; system requirements documents; system specifications; RFPs; SEP; TEMP; ISP; PPP; cybersecurity plans; security authorization package documentation; CCA compliance documentation; and other program, technical, and weapon system contractor-produced artifacts as required.
Radar / Electronic Warfare Engineer B-52 Div (WBD) - 1.3.14 CredenceRadar / Electronic Warfare Engineer B-52 Div (WBD) - 1.3.14WPAFB, OHUtilize MIL-HDBK-516 Airworthiness Certification Criteria to determine applicable requirements, work with base engineering to verify assigned systems and subsystems meet established criteria and work with other agencies as required, to achieve a desired level of certification. Assist in accomplishing data processing including centroiding, tracker, timing issues, data loading issues, software; interfaces to combat system and/or automation systems including required data, quantity of data, data merging and integration.
I&C Engineer III System OneI&C Engineer IIIPerry, OHLead the production of instrumentation engineering/design deliverables, including Instrument Index, control systems (DCS and/or PLC) and Continuous Emissions Monitoring Systems (CEMS) Data Sheets and control design deliverables, including I/O list, Process Control Narratives. Ability to independently organize and prioritize work assignments and coordinate a variety of tasks, with good attention to detail and ability to deal with conflicting priorities and deadlines.
NewMechanical Engineer III System OneMechanical Engineer IIIPerry, OHAssist mechanical designers and drafters in developing the structural design of equipment and piping systems using computer-assisted design (CAD) and 3D design software. Develop and test models of alternate designs and processing methods to assess feasibility, operating condition effects, possible new applications and necessity of modification.
Supplier Quality Engineer Michael Page USASupplier Quality EngineerMentor, OH$85,000–$115,000 / yearFull timeThey offer unique and specialized engineered products that are used for aerospace, marine, ordnance, nuclear, precision and commercial applications. Due to exciting growth, they are seeking an experience supplier quality engineer to drive improvement and be a key representative of the company to their core suppliers.
NewNuclear Engineer US NavyNuclear EngineerAkron, OHKey Responsibilities Provide technical direction in areas such as reactor and fluid systems design, reactor physics, materials development, component design for steam generators, pumps, and valves, instrumentation and control for reactor and propulsion plants, testing and quality control, radiation shielding, and chemistry and radiological controls; review designs and analyses from laboratories, shipyards, and industry partners; coordinate with fleet units to ensure safe and reliable nuclear plant operation. Pathways, Training & Advancement Officer commissioning through programs such as Officer Candidate School or the Nuclear Propulsion Officer Candidate program followed by a structured technical qualification program at Naval Reactors; rotational exposure to laboratories, prototypes, shipyards, and fleet support issues; progressive responsibility leading projects and becoming a subject matter expert, with opportunities for professional military education and advanced graduate study in technical fields.
Engineer V I&C - Nuclear Zachry Holdings, IncEngineer V I&C - NuclearOHTypical activities include developing specifications and/or modification packages, defining I&C design scope, developing design criteria documents, identifying, and selecting control valves and instruments, developing control system functionality, developing control system architectures, and defining I/O device interfaces. Education Required (minimum): BS in electrical, mechanical, nuclear, chemical, computer or process/controls engineering from an ABET accredited engineering program that includes course work in analog and digital control systems.
Engineer V Civil/Structural - Nuclear Zachry Holdings, IncEngineer V Civil/Structural - NuclearOHAbility to perform walk downs of equipment in an industrial plant environment, to include climbing ladders, accessing security-controlled areas, and entering confined spaces and controlled hazardous areas is required. Typical activities include developing specifications and/or modification packages, defining design scope, developing design criteria documents, identifying, and selecting equipment and instruments, and developing system functionality.
NewJunior Systems Design Engineer, Nuclear ATS CorpJunior Systems Design Engineer, NuclearOHThrough direct involvement in design reviews, analysis, proof of principle testing, and on site support, you will develop into a trusted technical contributor and subject matter expert, helping deliver innovative, compliant, and reliable systems that make a real world impact. Education: Associate's degree in mechanical Mechanical engineeringEngineering, Systems Design Engineering, Electrical Engineering, Mechatronics, Engineering Physics, Engineering Science, or a related engineering discipline is preferred.
Mechanical Design Engineer - Nuclear Reuter-StokesMechanical Design Engineer - NuclearTwinsburg, OhioWorking directly with the respective Product Line Leader, Quality, Manufacturing, and other Functional Teams to ensure products meet internal and external requirements, start to finish, and provide for continued growth of the product line. Working with a cross-functional engineering team to maintain and develop products for the Reuter-Stokes Nuclear product line, either as improvements to existing designs or as part of new product development.
Major Projects - Digital I&C Nuclear Principal Engineer Vistra CorpMajor Projects - Digital I&C Nuclear Principal EngineerOHCoordinate owner's acceptance reviews of products developed by external consulting service companies contracted by Vistra for the power uprate project. The Major Projects Digital I&C Engineer position is responsible for planning and performing Digital I&C engineering duties as assigned, working independently.
Major Projects - Digital I&C Nuclear Principal Engineer Vistra Nuclear Operations CompanyMajor Projects - Digital I&C Nuclear Principal EngineerPerry, OHFull timeCoordinate owner’s acceptance reviews of products developed by external consulting service companies contracted by Vistra for the power uprate project. The Major Projects Digital I&C Engineer position is responsible for planning and performing Digital I&C engineering duties as assigned, working independently.
Field Geotechnical Engineer / Geologist (Nuclear) S&ME, Inc.Field Geotechnical Engineer / Geologist (Nuclear)Columbus, OHProject types may include site selection and due diligence, field exploration, and/or construction quality assurance services supporting new nuclear facility permitting, licensing, and construction. S&ME is excited about the nuclear project work we are pursuing and seeking additional team members eager to apply their geotechnical or geological knowledge to contribute to the success of these projects.
Mechanical Design Engineer - Nuclear Crane CoMechanical Design Engineer - NuclearTwinsburg, OHWorking directly with the respective Product Line Leader, Quality, Manufacturing, and other Functional Teams to ensure products meet internal and external requirements, start to finish, and provide for continued growth of the product line. Working with a cross-functional engineering team to maintain and develop products for the Reuter-Stokes Nuclear product line, either as improvements to existing designs or as part of new product development.
Nuclear Spent Fuel Engineer Vistra CorpNuclear Spent Fuel EngineerOHRelevant experience may include nuclear engineering, fuel handling, reactor engineering, spent fuel pool operations, dry cask storage, licensing, plant systems engineering, radiation protection support, or nuclear safety analysis. Supports the gathering, analysis, and interpretation of technical, operational, and regulatory information necessary for spent fuel pool management, dry cask storage, fuel movement planning, licensing compliance, and resolution of complex engineering issues.
Electrical Engineer, Nuclear Power Facility Blue United SourcingElectrical Engineer, Nuclear Power FacilityColumbus, OH$90,000–$138,000You'll work across a broad range of electrical distribution systems — from 24VDC control power to 345kVAC transmission — providing critical troubleshooting, condition assessments, and design support that keeps the facility running safely and efficiently. Blue United Sourcing is partnering with a leading Fortune 500 power generation company to identify a talented Electrical Engineer (Nuclear Power Facility) to join their plant engineering team in Toledo, OH.
NewNuclear Geotechnical Field Engineer (Travel Required) S&MENuclear Geotechnical Field Engineer (Travel Required)Columbus, OHYou will engage in field investigations, data analysis, and ensure compliance with regulations, while performing diverse tasks such as monitoring site conditions and collaborating with contractors. S&ME is seeking a Geotechnical Engineer or Geologist in Columbus, Ohio, to support high-profile nuclear projects.
Nuclear Criticality Safety Engineer (3786) Navarro Research and Engineering, Inc.Nuclear Criticality Safety Engineer (3786)Portsmouth, OHTypical job responsibilities assist and support management in NCS program implementation and engineering system design; which may include duties or activities in one or more of the following functional areas, in addition to other duties as assigned: Perform nuclear criticality safety reviews of existing and proposed nuclear material operations and facilities, facility designs and modifications; and research or processing activities involving fissionable materials. Maintain knowledge of and demonstrates ability to perform work safely in accordance with all approved safety policies, procedures and applicable regulations and performs assigned duties in a safe manner.
Nuclear Criticality Safety Engineer Edgewater Technical AssociatesNuclear Criticality Safety EngineerOhioEdgewater has a proven track record and is a trusted provider of fixed-price construction projects, engineering, and technical services for the DOE, DOD, National Nuclear Regulatory Commission (NRC), Canadian Commercial Nuclear Industry, and private sector commercial contractors involved in nuclear, high-hazard, or complex operations. Edgewater Technical Associates is seeking qualified candidates for Nuclear Criticality Safety Engineer opportunities at various locations across the United States Department of Energy (DOE) complex in support of traditional environmental clean-up missions and in support of the advancement of first-in-kind commercial fuel capabilities at select sites across the United States.
Nuclear Criticality Safety Engineer (3786) Navarro Inc.Nuclear Criticality Safety Engineer (3786)Portsmouth, OHTypical job responsibilities assist and support management in NCS program implementation and engineering system design; which may include duties or activities in one or more of the following functional areas, in addition to other duties as assigned: Perform nuclear criticality safety reviews of existing and proposed nuclear material operations and facilities, facility designs and modifications; and research or processing activities involving fissionable materials. Maintain knowledge of and demonstrates ability to perform work safely in accordance with all approved safety policies, procedures and applicable regulations and performs assigned duties in a safe manner.
Nuclear Spent Fuel Engineer VistraNuclear Spent Fuel EngineerCleveland, OhioRelevant experience may include nuclear engineering, fuel handling, reactor engineering, spent fuel pool operations, dry cask storage, licensing, plant systems engineering, radiation protection support, or nuclear safety analysis. Supports the gathering, analysis, and interpretation of technical, operational, and regulatory information necessary for spent fuel pool management, dry cask storage, fuel movement planning, licensing compliance, and resolution of complex engineering issues.
Mechanical Engineer - Nuclear Aspen Technical Staffing, IncMechanical Engineer - NuclearPerry, OHAssist mechanical designers and drafters in developing structural designs of equipment and piping systems using CAD and 3D design software. This role supports the planning, design, procurement, and installation quality of mechanical systems and equipment within heavy industrial and power-related environments.
Project Engineer or Geologist - Nuclear S&ME, Inc.Project Engineer or Geologist - NuclearColumbus, OHS&ME is seeking an experienced engineer or geologist with an interest in providing technical expertise and project management skills supporting a variety of civil, environmental, and geotechnical projects in the nuclear sector, as well as projects in the Commercial, Industrial, and Energy markets. As a PQAM or QAR within the S&ME Nuclear Quality Assurance Program, you would: Collaborate closely with field staff, engineers, and clients to adhere to our Nuclear Quality Assurance (NQA-1) program while supporting the continued growth of the nuclear sector.
NewSenior Project Manager - Nuclear Power Blue United SourcingSenior Project Manager - Nuclear PowerToledo, OhioThis role is responsible for directing execution of a large-scale capital upgrade program across an operating nuclear facility, coordinating with engineering, operations, and outside contractor partners to deliver hundreds of individual plant modifications safely, on schedule, and on budget. This is a rare opportunity to help lead one of the most significant capital investment programs underway in the nuclear power industry today, with a clear path to long-term career growth for the right leader.
NewSenior Manager, Major Nuclear Projects Blue United SourcingSenior Manager, Major Nuclear ProjectsToledo, OhioThis role is responsible for directing execution of a large-scale capital upgrade program across an operating nuclear facility, coordinating with engineering, operations, and outside contractor partners to deliver hundreds of individual plant modifications safely, on schedule, and on budget. This is a rare opportunity to help lead one of the most significant capital investment programs underway in the nuclear power industry today, with a clear path to long-term career growth for the right leader.
Business Development Manager-Kiewit Nuclear Solutions-DOE Kiewit CorpBusiness Development Manager-Kiewit Nuclear Solutions-DOEColumbus, OHOur staff collaborates with Kiewit's vast internal network of resources that span heavy civil and infrastructure, vertical and commercial buildings, industrial, as well our oil and gas and power generation markets, to drive safe and cost-effective solutions that achieve client expectations and further Kiewit's core values of People, Integrity, Excellence, and Stewardship. Strategic Thinking & Vision: Ability to develop and execute strategies and secure commercial transactions within the nuclear sector, particularly in high-value and complex projects, including those involving design engineering processes and construction management for nuclear facilities.
NewNuclear Technical Manager Reuter-StokesNuclear Technical ManagerTwinsburg, OhioLead collaboration efforts with other divisions of Crane Nuclear and Process & Flow Technologies, technical title holders, and other technical managers with the goal of establishing best-in-class design processes. Optimize execution by applying various models, including resources from other product lines or businesses, on-site contractors, and engineering service providers.
Lead Nuclear Sales Manager Reuter-StokesLead Nuclear Sales ManagerTwinsburg, OhioSelling product(s), services, parts, solutions, or projects, including Reuter-Stokes nuclear technology (neutron, gamma, and associated instrumentation) to support boiling water reactors (BWRs) within an assigned geographic area. Managing sales of highly engineered products and systems requiring deep technical expertise; translating complex technical value propositions into customer-focused solutions and coordinating closely with engineering and product teams.
Lead Nuclear Sales Manager Crane CoLead Nuclear Sales ManagerTwinsburg, OHSelling product(s), services, parts, solutions, or projects, including Reuter-Stokes nuclear technology (neutron, gamma, and associated instrumentation) to support boiling water reactors (BWRs) within an assigned geographic area. Managing sales of highly engineered products and systems requiring deep technical expertise; translating complex technical value propositions into customer-focused solutions and coordinating closely with engineering and product teams.
Electrical Designer - Nuclear Aspen Technical Staffing, IncElectrical Designer - NuclearPerry, OHDevelop and produce electrical design deliverables including wiring diagrams, connection diagrams, one-line and three-line diagrams, schematic/elementary diagrams, logic diagrams, and conduit/raceway layouts. The ideal candidate will work independently with minimal supervision while supporting multiple concurrent projects and coordinating across engineering disciplines.
Piping Designer - Nuclear Aspen Technical Staffing, IncPiping Designer - NuclearPerry, OHThe role requires strong technical capability, leadership within design teams, and the ability to manage segments of a project from concept through final approval. Schedule work assignments and provide guidance, training, and technical support to designers, checkers, and drafters on small to medium projects.
Thermal / Hydraulic Design Engineer BWX Technologies IncThermal / Hydraulic Design EngineerBarberton, OHResponsibilities: • Perform thermal-hydraulic design evaluations including: steady-state and transient analysis of recirculating steam generators, two-phase flow and heat transfer analysis, incompressible/compressible flow network analysis, heat exchanger design and optimization, steam drum design, multi-phase separator design, and computational fluid dynamics (CFD) modeling using STAR CCM and ANSYS FLUENT. Opportunity for a variety of mechanical engineering analysis assisting other groups within Design Engineering, including structural design/stress analysis such as: linear elastic sizing, fatigue, elastic-plastic, fracture mechanics, shock and vibration, thermal/mechanical, and Finite Element Analysis (FEA) using ABAQUS or ANSYS.
Engineer V Electrical Zachry Holdings, IncEngineer V ElectricalOHAbility to perform walk downs of equipment in an industrial plant environment, to include climbing ladders, accessing security-controlled areas, and entering confined spaces and controlled hazardous areas is required. Typical activities include developing specifications and/or modification packages, defining design scope, developing design criteria documents, identifying, and selecting equipment and instruments, and developing system functionality.
Quality Engineer BWX Technologies IncQuality EngineerEuclid, OH$70,000–$103,000 / yearBWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). A U.S.-based company, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration.
Quality Engineer BWXTQuality EngineerEuclid, OH$70,000–$103,000 / yearBWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid (“Agreement”). A U.S.-based company, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration.
Engineer III, I&C ESPO CorporationEngineer III, I&CPerry, OH$50–$52 / hourLead the production of instrumentation engineering/design deliverables, including Instrument Index, control systems (DCS and/or PLC) and Continuous Emissions Monitoring Systems (CEMS) Data Sheets and control design deliverables, including I/O list, Process Control Narratives. Job sites may contain the following: light to heavy equipment vehicles, small to large equipment, materials, communication equipment and tools, people standing, walking, sitting, signaling, and talking.
Imaging Service Engineer 3 Sodexo SAImaging Service Engineer 3Cleveland, OHSpecific experience with the following medical devices or equipment: DiCom, Siemens, Toshiba, Philips, GE Healthcare, XRay, Ultrasound, C-Arm, Cat Scan, MRI/CT, Radiation Therapy, Nuclear Medicine, Wet or Dry Processor, General RF, Clinical Asset Management, Accelerators. Minimum Education Requirement - Associate"s Degree (or equivalent experience) in electronic, biomedical engineering or a discipline geared toward managing maintaining and repairing clinical equipment within a healthcare environment.
Entry Level Software Engineer General Dynamics Mission Systems, IncEntry Level Software EngineerLakewood, Ohio$74,050.40–$82,149.60 / yearUtilizing your creativity and innovative engineering skills, you'll join a high-performing agile team delivering a cutting-edge suite of tools that replaces legacy paper-based processes with modern, scalable software deployed on edge networks across the U.S. Navy fleet. Company Overview: General Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation.
Design Mechanical Engineer Vistra Nuclear Operations CompanyDesign Mechanical EngineerOak Harbor, OHFull timeIf you have what it takes to become part of the Vistra family and would like to start a promising career with a global leader, take a look at the exciting employment opportunities that are currently available and apply online. Prepare engineering change packages for modifications to the station, including design drawings, vendor drawings, specifications, and other applicable documents.
I&C Engineer III Aspen Technical Staffing, IncI&C Engineer IIIPerry, OHThe successful candidate will independently perform complex engineering assignments, develop innovative solutions to technical challenges, and lead the production of critical instrumentation and control system deliverables. Our client is seeking an experienced Instrumentation & Controls (I&C) Engineer III to support a major nuclear power generation project in Perry, Ohio.
Manufacturing Engineer, Subcontracts BWX Technologies IncManufacturing Engineer, SubcontractsBarberton, OH$75,000–$117,000 / yearBWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). A U.S.-based company, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration.
Senior Test Engineer Hubbell IncSenior Test EngineerWadsworth, OHLead and sustain laboratory accreditation to ISO/IEC 17025, including ownership of assigned quality system elements, audit readiness, internal/external audits, proficiency testing, and creation/maintenance of controlled procedures and technical records. Serve as the technical lead for testing in the High Voltage and Pulsed Power Laboratory, partnering with R&D to define requirements, develop test programs, set schedules/priorities, oversee execution, and deliver clear, defensible test reports.
Engineer V Mechanical Zachry Holdings, IncEngineer V MechanicalOHSuperior technical knowledge of mechanical discipline and ability to work on project teams with other engineers to evaluate conditions and develop design changes which will improve plant performance, safety and reliability. Past experience with feasibility studies, equipment reliability issues, system modifications and upgrades to improve safety and reliability desired.
NewIT Systems Engineer Reuter-StokesIT Systems EngineerTwinsburg, OhioThe IT Systems Engineer will be responsible for supporting and maintaining the core IT infrastructure, including servers, networks, cloud services, and cybersecurity protocols for approximately 170 associates at the Twinsburg, OH location. Supporting a leadership team that is new to Crane requires a proactive mindset and a hands-on approach to IT infrastructure and systems management.
Quality and Regulatory Engineer Fortive CorporationQuality and Regulatory EngineerSolon, OH$88,000–$147,000 / yearExecute New Product Introduction (FAI)/Design Transfer activities in characterizing manufacturing processes for parts/components in development to ensure smooth transition from Research & Development to manufacturing, including participation and leadership of the development of equipment and process validation requirements (Failure Modes and Effects Analysis, Installation Qualification, Operational Qualification, Performance Qualification), using appropriate statistical tools and techniques. + Spend time on the manufacturing floor to determine process improvements, participating in investigations, root cause analyses, corrective action planning, implementation activities and interfacing with all cross functional departments to increase product quality using recognized Six Sigma and Lean methodologies.
Materials Engineer BWX Technologies IncMaterials EngineerBarberton, OH$86,000–$135,850 / yearBWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). A successful candidate, beyond having the technical acumen, will demonstrate strong communication skills, attention to detail, agility to move between multiple ongoing projects, an unwavering quality-oriented mindset, a productive working relationship with suppliers and teammates and an ability to leverage team resources to achieve desired results.
Turbine Generator Consulting Engineer Vistra CorpTurbine Generator Consulting EngineerOHEnsure long‐range improvement plans for key Turbine and Generator assets requiring attention such as obsolete equipment, vulnerabilities from OE, upgrades that would result in operational or financial benefits, and determining and reporting Maintenance Rule availability. Key Accountabilities: Provide proactive engineering for the nuclear power plant Main Turbines and Generators to improve overall plant reliability.