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Engineer III / Sr (Nuclear Fuels)

Date: May 12, 2023

Location: TONOPAH, AZ, US, 85354

Company: APS

Arizona Public Service generates clean, reliable and affordable energy for 2.7 million Arizonans. Our service territory stretches across the state, from the border town of Douglas to the vistas of the Grand Canyon, from the solar fields of Gila Bend to the ponderosa pines of Payson. As the state’s largest and longest-serving energy provider, our more than 6,000 dedicated employees power our vision of creating a sustainable energy future for Arizona.


Since our founding in 1886, APS has demonstrated a strong commitment to our customers in one of the country’s fastest growing states, earning a reputation for customer satisfaction, shareholder value, operational excellence and business integrity.


Our present and future success depends on the creative and dedicated people of our company who demonstrate the principles outlined in the APS Promise: Design for Tomorrow, Empower Each Other and Succeed Together.  


Palo Verde Generating Station performs reload core design and non-LOCA safety analysis internally.  Palo Verde is seeking additional staff to perform these analyses.  These positions are a flexible location position, where the individuals may choose to work primarily from the office, or primarily from home (provided required fitness for duty and emergency response times are met).  The Engineer applies in-depth technical knowledge and expertise to engineering projects and in resolving emergent issues. Is depended upon regularly in one or more areas of engineering expertise. Understands engineering technology and process concepts for the organization and processes. Work is reviewed from a long-term perspective and mainly for results. Establishes most effective solution to problems. Sought out for solutions that are acted on as a final technical basis for decisions. May be subject to occasional shift work.

Minimum Requirements

Engineer III
A four year Bachelor of Science degree in an engineering discipline or related applied science discipline (see approved list) from an ABET accredited institution plus five (5) years working experience in Engineering-related positions, at least one (1) of which must be in nuclear experience.


Engineer Senior

A four year Bachelor of Science degree in an engineering discipline or related applied science discipline (see approved list) from an ABET accredited institution plus eight (8) years working experience in Engineering-related positions, at least three (3) of which must be nuclear experience. 


Preferred Special Skills, Knowledge or Qualifications: Familiarity with the CASMO/SIMULATE neutronics code suite or familiarity with the VIPRE thermal-hydraulics code suite.  Familiarity with Combustion Engineering reload methods. Knowledge of programming languages and tools such as FORTRAN, PERL, AWK/SED, C, PYTHON, and Visual Basic.  Problem analysis/resolution techniques. Knowledge of applicable codes, standards, practices, and methods. Experience in the utility or fuel vendor industry. Fundamentals of Engineering certificate or Professional Engineer licensure.


List of Approved Degrees:  Materials Science/Metallurgy, Physics, Chemistry, Math, Nuclear, Electrical, Mechanical, Civil, Electronics, Computer Science, Environmental, Chemical, Architectural, Structural.  (A four-year bachelor of Engineering Technology degree is not considered an automatic equivalent for a B.S. degree in Engineering.  A review of the degree program curriculum must be completed by Engineering department management.)

Nuclear requirement: Any PVNGS employee may be called upon to serve as a member of the Emergency Response Organization (ERO) and will be expected to fulfill their obligation as an ERO member, including being able to  meet applicable ERO and fitness for duty response time requirements from your home. Any PVNGS employee may be called upon to support a refueling or short-notice outage. This includes line roles and responsibilities as necessary to execute outage activities. These are conditions of employment at PVNGS.


Major Accountabilities

We are looking for individuals to contribute in any of the following areas: 

1)    Develops core loading pattern designs, generates nuclear cross sections, creates neutronics models, and performs engineering analyses to evaluate the physics characteristics of reload cores using analysis software such as SIMULATE-3, CASMO-4, XIMAGE, etc. (dependent on specialty).
2)    Develops cycle specific core thermal-hydraulic analyses, determines inlet core flow distribution, determines the cycle specific TH limits using analysis software such as VIPRE and the CE TH codes (dependent on specialty). 
3)    Develops cycle specific COLSS/CPC digital setpoint analyses, using the CE COLSS and CPC analytical software (dependent on specialty). 
4)    Monitors actual core performance as compared to the analytical predictions from the design process to identify and resolve technical challenges.
5)    Develops and maintains the reload process methodology and software tools.  

6) Develops and applies unique solutions and applications to a broad range of technical issues and problems (solutions that typically require original and creative approaches). Makes decisions and recommendations that have a moderate to significant effect on the overall organization performance.

7) Prepares complex engineering plans, designs, analysis, evaluations, studies, technical reviews, investigations and verifications. Ensures engineering analyses, design, project control, schedule commitments or oversight work is technically sound, cost effective, and in compliance with established standards, codes, and regulations. Checks and reviews analysis, evaluations, and investigations of others.

8) Integrates the many interrelated elements of complex projects that are broad in scope, require considerations not previously encountered and requires interpretation and/or modification to guidelines. Complies with design, regulatory, operating and maintenance requirements. Identifies potential schedule or quality problems and initiates corrective action.

9) Interfaces with customers and other departments to ensure project objectives are understood and that work scope meets customer requirements, budget and schedule. Contacts customers and various levels of management to obtain or present technical data. Presents the results of designs, studies projects (in terms of new techniques) or approaches to subordinates, colleagues, management and customers.

10) Provides technical guidance, leadership and support to less experienced engineers.

11) Assists the organization in problem solving, as needed, by critically challenging assumptions and decisions to ensure the most optimal solutions and strategies are implemented. Assists in developing long-range strategies for significant site problems.

12) Leverages industry and organization resources to resolve key technical issues. Develops a path forward to address these issues including bridging strategies. May interface with outside agencies and regulatory authorities.

13) May plan and coordinate programs and large-scale engineering projects or multiple medium-scale projects while acting as a technical specialist for a specific engineering field. May be responsible for: all aspects of work scope; directing consultants; conducting feasibility studies; determining staff, cost estimates and resource requirements; and recommending engineering criteria.

14) Monitors projects and recommends modifications to increase operating efficiency and /or reviews design and documentation of complex projects to ensure compliance with design specifications, schedules and any regulatory requirements. 

15) May research new developments and technology and make recommendations to management on their feasibility for Company operations.

Export Compliance / EEO Statement

This position may require access to and/or use of information subject to control under the Department of Energy's Part 810 Regulations (10 CFR Part 810), the Export Administration Regulations (EAR) (15 CFR Parts 730 through 774), or the International Traffic in Arms Regulations (ITAR) (22 CFR Chapter I, Subchapter M Part 120) (collectively, 'U.S. Export Control Laws'). Therefore, some positions may require applicants to be a U.S. person, which is defined as a U.S. Citizen, a U.S. Lawful Permanent Resident (i.e. 'Green Card Holder'), a Political Asylee, or a Refugee under the U.S. Export Control Laws. All applicants will be required to confirm their U.S. person or non-US person status. All information collected in this regard will only be used to ensure compliance with U.S. Export Control Laws, and will be used in full compliance with all applicable laws prohibiting discrimination on the basis of national origin and other factors. For positions at Palo Verde Nuclear Generating Stations (PVGS) all openings will require applicants to be a U.S. person.

Pinnacle West Capital Corporation and its subsidiaries and affiliates ('Pinnacle West') maintain a continuing policy of nondiscrimination in employment. It is our policy to provide equal opportunity in all phases of the employment process and in compliance with applicable federal, state, and local laws and regulations. This policy of nondiscrimination shall include, but not be limited to, recruiting, hiring, promoting, compensating, reassigning, demoting, transferring, laying off, recalling, terminating employment, and training for all positions without regard to race, color, religion, disability, age, national origin, gender, gender identity, sexual orientation, marital status, protected veteran status, or any other classification or characteristic protected by law.

For more information on applicable equal employment regulations, please refer to EEO is the Law poster. Federal law requires all employers to verify the identity and employment eligibility of every person hired to work in the United States, refer to E-Verify poster. View the employee rights and responsibilities under the Family and Medical Leave Act (FMLA).

Arizona Public Service is a smoke free workplace.

Flex Role:
This position is not required to be performed at a specific APS facility as long as adequate technology and a solid ergonomic set up are present. Pending agreement with leadership, employees hired into this role will be able to choose where they prefer to perform their work. Employees will have two options to choose from: 

  • APS office based: The employee prefers to work most of the time from an APS facility.
  • Home based: The employee prefers to work most of the time from his/her home.


*Employees in Flex roles are required to reside in Arizona (or NM for Four Corners-based employees). Role types are subject to change based on business need.

Nearest Major Market: Phoenix

Job Segment: Nuclear, Sustainability, Energy