The expertise to create solutions that can pay for themselves

EXCEL consultants have the background, contacts and up-to-date expertise to come in and implement initiatives that can drive faster approvals, fewer problems, and new ways to save money, strengthen security and raise—and sustain—performance.


Donald R. Hoffman

President and CEO

Mr. Hoffman founded EXCEL Services Corporation in 1985 to provide specialized professional services to nuclear utilities in licensing and regulatory support. For more than three decades, EXCEL has become recognized as a premier worldwide supplier of enforcing operations and technical regulatory support services.

Mr. Hoffman is very active in the nuclear industry and is a Past President of the American Nuclear Society. He is also the president of Eagle Alliance.

Prior to starting EXCEL, Mr. Hoffman served in the US Nuclear Submarine Navy as a senior reactor operator and engineering officer and as a Manager and lead reviewer at the Nuclear Regulatory Commission reviewing License Applications and Technical Specifications.

Michael V. McMahon

Senior Vice President, Business Development

Dr. McMahon oversees EXCEL’s sales, marketing, and business development activities, including customer relationship management, sales planning, order development, and customer satisfaction. Dr. McMahon has more than 25 years of professional engineering, leadership, project management, sales, and business development experience in the commercial nuclear industry and the nuclear navy, including 17 years at the global nuclear energy company AREVA. Most recently, he served as the President & CEO of Transnuclear, Inc. (now AREVA TN), a division of AREVA Inc. and a leader in used nuclear fuel/radioactive waste storage and transportation solutions, where he helped to lead the company to record levels of growth and profitability. Prior to leading AREVA TN, he worked and lived in France where he served as the U.S. director of international projects for AREVA’s Back End Business Group, which includes the group’s used fuel management, recycling, transportation and decommissioning activities.

Before his assignment in France, he served in the U.S. as AREVA’s Key Account Manager (KAM) for Constellation Energy. Prior to that he had served in positions of increasing responsibility in the engineering and business development organizations of AREVA and its predecessor companies, including the former Duke Engineering & Services (DE&S).

Before joining DE&S, Dr. McMahon was an associate at the management consulting firm McKinsey & Company. He spent the first six years of his professional career in the Nuclear Navy serving on nuclear-powered fast attack submarines.

Dr. McMahon is a graduate of the United States Naval Academy and has also earned a doctorate in nuclear engineering from the Massachusetts Institute of Technology and an MBA from the MIT Sloan School of Management.

Richard P. Rosano

Senior Vice President, Critical Infrastructure Protection

Mr. Rosano has more than 40 years of experience in executive and management levels in nuclear security, critical infrastructure protection, and incident response. His career included 32 years with the Nuclear Regulatory Commission, culminating in service as the Chief, Nuclear Reactor Security, and senior security advisor to three NRC Chairmen. In his current position with EXCEL, he is responsible for the development, management, and regulatory oversight of security programs at client sites. Specific ongoing projects include consulting services for U.S. and international nuclear facilities in licensing, risk assessment, performance testing, compliance assessments, and critical infrastructure protection.

Mr. Rosano’s involvement in the international sphere of nuclear security has included advising several foreign governments as well as commercial industries within their countries in matters involving nuclear security licensing, inspection, and testing. He has published a number of articles on the subject, serves as a long-term member of a permanent task force for the International Atomic Energy Agency and the Nuclear Energy Institute, and has been the featured speaker at U.S. and international conferences for the IAEA, World Institute of Nuclear Security, NATO, and the National Nuclear Security Conference.

Learn More: Critical Infrastructure Protection Services

Mark A. Satorius

Senior Vice President, Executive Performance Solutions

Mr. Satorius is responsible for leading EXCEL’s newest service offering that uses the highest levels of industry expertise to create solutions for clients’ most critical and difficult regulatory challenges. Prior to joining EXCEL, he spent 26 years at the U.S. Nuclear Regulatory Commission (NRC), where he served in several senior leadership positions, including Administrator, NRC Region III; Director, Office of Federal and State Materials and Environmental Programs; and as the Executive Director for Operations (EDO). As the EDO, Mr. Satorius was the chief operating officer of the Commission, and was authorized and directed to discharge all the operational and administrative functions necessary for the day-to-day operations of the agency.

Mr. Satorius has testified before Congressional Committees and at NRC Commission Meetings on topics such as safety and security issues at licensed nuclear facilities. Since retiring from the NRC, he has been appointed to the United Arab Emirates International Advisory Group where he provides safety and security insights to the Emirati Regulator as they prepare to transition their first nuclear power plant from construction to operations.

A graduate of the United States Naval Academy, Mr. Satorius was a nuclear submarine officer with extensive operational experience aboard a nuclear-powered submarine. He attained formal certification from the Director of the Naval Reactors Program as a Qualified Nuclear Engineering Officer.

Learn More: Executive Performance Solutions


Charles E. DeDeaux

Vice President, Engineering & Technical Services

Mr. DeDeaux has worked in the Nuclear Industry for 35 years. He has been with EXCEL Services Corporation for 19 years and previously with Entergy for 16 years. Mr. DeDeaux has served clients throughout the United States, Asia and Africa and has held positions in Engineering, Regulatory Affairs, Project Management, Safety, Maintenance, and Training. Prior to his current position, Mr. DeDeaux has also held the following positions with EXCEL: Director of Licensing and Engineering Projects, Director of Business Development - Asia/Africa, and Regulatory Affairs Manager.

Learn More: Engineering & Technical Services

Pareez E. Golub

Vice President, New Nuclear Build Services

Ms. Golub has 25 years of experience in nuclear plant licensing and engineering for domestic/foreign utilities and reactor vendors. Her Licensing experience includes both 10 CFR Part 52 and Part 50 for new reactors and operating reactors, respectively.

Ms. Golub’s Part 52 licensing experience includes significant work on Design Control Documents (DCD) and Combined Operating Licenses (COL). Her Part 52 work includes both near-term Advanced Light Water Reactors (ALWRs), Small Modular Reactors (SMRs), and Advanced Reactors. She served as the Licensing lead for development of the GE-Hitachi ESBWR Design Control Document (DCD) Instrumentation and Controls chapter. She managed the first large-scale upgrade to the AP1000 reference plant (Vogtle Units 3 & 4) Technical Specifications (previously based on AP1000 DCD TS) applicable to all US AP1000 units and development of AP1000 Technical Requirements Manuals. Ms. Golub has also developed and conducted training for Part 52-related issues both in the US and Korea. She has served on various NEI committees supporting Part 52 issues.

Under Part 50 licensing for operating reactors, she negotiated Technical Specification (TS)-based license amendment requests (LARs) for the Exelon fleet of nuclear reactors. She served in the TS industry group representing the eight Exelon BWRs. Her areas of greater depth include digital instrumentation and controls and Technical Specifications. She specializes in negotiating resolution of first-of-kind licensing issues with the NRC. Ms. Golub is currently the Chair for the NEI Digital I&C Regulatory Issues Focus Group supporting resolution of complex industry and regulatory issues for the operating fleet and new plants.

Prior to joining EXCEL, Ms. Golub worked for Exelon Corporation in the design engineering and licensing organizations and for ENERCON Services in the area of new reactor licensing

Learn More: New Nuclear Build Services

Brian D. Mann

Vice President, Industry Programs & Services

Mr. Mann is responsible for EXCEL’s support of the PWROG Licensing Subcommittee and BWROG Licensing Committee, managing the Owners Groups Tech Spec Task Force (TSTF) and provides Licensing support to EXCEL’s domestic and international clients. Mr. Mann acts as the point-of-contact by the industry and the NRC for Technical Specifications related issues.

Mr. Mann serves on a number of NEI committees, such as the Regulatory Issues Task Force and the Risk Informed Technical Specifications Task Force. He has been an invited speaker at the NRC Regulatory Information Conference in 2009, 2010 2012, 2014, and 2017.

Providing training on regulatory issues to individual utilities and the industry, Mr. Mann has made over ten presentations at the American Nuclear Society Utility Working Conference and the NEI Licensing Forum.

Before joining EXCEL in 1997, Mr. Mann was the Chairman of the Combustion Engineering Improved Technical Specifications Conversion Task Force (which he founded) and was a member of the TSTF and its predecessor organizations since their inception in 1993. Mr. Mann held a number of positions in management, Licensing, Project Management and Reactor Engineering at several utilities. He was a member of the U.S. Council on Energy Awareness’ “Energy America” speakers program which traveled the country addressing energy issues with an estimated audience of 1.5 million persons

Learn More: Industry Programs & Services

Raymond J. Schiele

Vice President, Regulatory Improvement Services

Mr. Schiele is a Senior Licensing Engineer and an accomplished nuclear professional. His professional resume includes 43 years of Nuclear Operations, Engineering and Licensing experience which includes service in the United States Navy, 16 years’ commercial nuclear power plant experience as a Senior Reactor Operator/Shift Manager and for the past 18 years as a Senior Licensing Engineer/Project Manager for EXCEL Services Corporation, a nuclear engineering consulting firm.

Mr. Schiele is a results-driven professional with over 22 successful Improved Technical Specification Conversion projects completed. He has extensive licensing experience working with both the NRC and client companies in resolving technical and regulatory issues. As such, he has become an expert in implementing NRC's rules and regulation. He has successfully managed projects as diverse as Improved Technical Specifications Conversions, Design Basis Reconstitution, FSAR Upgrades, 10CFR50.67 AST Support, Cyber Security LAR Support, Appendix R LAR Inspection Support, Root Cause Assessments and NRC 95-001 Inspection Support. Mr. Schiele is currently supporting Tennessee Valley Authority in the Clinch River Small Modular Reactor Early Site Permit Application Licensing effort.

Learn More: Regulatory Improvement Services

Jenny R. DeCamillo

Vice President, Account Management and Services

Ms. DeCamillo supports North American Operations by managing a portfolio of established clients to ensure timely and successful delivery of project support and solutions. In addition, she provides support to other key departments, including: Business Development, Associate Care, Contracts, Human Resources, and Marketing.

As the Vice President of Account Management and Services, Ms. DeCamillo has supported matrixed responsibilities with the Projects division of EXCEL. Her matrixed responsibilities have spanned a diverse set of technical project support roles including Procedure Upgrades, Subject Matter Expert, Licensing Project Team Member (TS Upgrades, ITS, Procedure Upgrades, etc.) and leadership roles as a Project Lead.