Constellation Energy Jobs in the United States
Constellation Energy
$127800 - $142000
Marseilles, IL
Responsible for directing the Radiation Protection Technicians in implementing decontamination, instrumentation, planning and scheduling, procedures, training, radiation exposure control, and rad waste programs in support of Operation and Maintenance activities in the plant. Responsible for the day-to-day management of the functional Radiation Protection (RP) program to ensure that work is getting completed in a timely manner and that the nuclear workers' exposure is being maintained As Low as Reasonably Achievable (ALARA).
Constellation Energy
$85000 - $143000
Benedict, MD
Bachelor&rsquos degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear) with 5 years of nuclear experience or related engineering experience. Bachelor&rsquos degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) with 2 years of nuclear or related engineering experience.
Constellation Energy
$73000 - $142000
Benedict, MD
Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. Recommend equipment, new concepts and techniques to improve performance, simplify construction, reduce costs, correct design or material flaws, or comply with changes in codes or regulations.
Constellation Energy
$73000 - $142000
Mechanicsville, MD
Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. Recommend equipment, new concepts and techniques to improve performance, simplify construction, reduce costs, correct design or material flaws, or comply with changes in codes or regulations.
Constellation Energy
$159000 - $191000
East Williamson, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$43.67 - $58.09
Brighton, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$213300 - $237000
Atlanta, IL
Work with direct reports to ensure proper prioritization/scheduling/execution of work activities, establishment of sound operating work practices, and adequate monitoring of department performance to achieve safe and efficient plant operation, high availability, and fiscal responsibility. 12 years overall experience, which includes 4 years power plant, 4 years nuclear power plant experience and 3 years of supervisory or managerial experience.
Constellation Energy
$159000 - $191000
Mount Morris, IL
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Colora, MD
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$43.67 - $58.09
Needham, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$133200 - $148000
Mechanicsburg, PA
Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. This individual is responsible for directly supervising licensed and non-licensed operators, including bargaining unit licensed and non-licensed operators, in the field.
Constellation Energy
$128700 - $143000
Heyworth, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$213300 - $237000
De Land, IL
Work with direct reports to ensure proper prioritization/scheduling/execution of work activities, establishment of sound operating work practices, and adequate monitoring of department performance to achieve safe and efficient plant operation, high availability, and fiscal responsibility. 12 years overall experience, which includes 4 years power plant, 4 years nuclear power plant experience and 3 years of supervisory or managerial experience.
Constellation Energy
$43.67 - $58.09
Acton, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$159000 - $191000
Erie, IL
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$128700 - $143000
Weldon, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$159000 - $191000
Mexico, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$43.67 - $58.09
Methuen, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$128700 - $143000
Farmer City, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$144000 - $160000
Hannibal, NY
The Nuclear Duty Officer (NDO) is the designated representative of nuclear management, responsible for notifying the Chief Nuclear Officer, Chief Operating Officer, Executive Vice Presidents and other nuclear personnel of clean energy centers (CECs) operational events or occurrences. Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department.
Constellation Energy
$32.57 - $47.87
Lancaster, CA
The primary responsibility of this role is to operate, inspect, troubleshoot, repair, and maintain solar photovoltaic (PV) systems, inverters, medium- and high-voltage electrical equipment, trackers, balance-of-plant components, and associated monitoring systems to ensure safe operation, regulatory compliance, optimal system performance, and maximum asset value. The incumbent must be able to communicate effectively across all levels of the organization, work independently or in teams, and support cross-functional coordination with operations, engineering, performance analytics, and vendor partners.
Constellation Energy
$159000 - $191000
New Park, PA
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Rochester, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$133200 - $148000
Lancaster, PA
Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. This individual is responsible for directly supervising licensed and non-licensed operators, including bargaining unit licensed and non-licensed operators, in the field.
Constellation Energy
$159000 - $191000
Davenport, IA
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$129600 - $158400
Billerica, MA
Responsibilities include participating in the scheduling of operations shift personnel, prioritizing schedule conflicts ensuring adequate shift coverage during normal and abnormal conditions troubleshooting equipment problems and effectively transitioning work from one crew to the other. Operate and control natural gas process systems loading of LNG trailers, and monitoring and controlling the unloading of LNG ship understanding the design and function of the various components which make up these systems and understanding and adhering to safety protocols.
Constellation Energy
$159000 - $191000
Churchville, MD
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Jarrettsville, MD
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$43.67 - $58.09
Billerica, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$159000 - $191000
Bel Air, MD
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Red Lion, PA
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Seward, IL
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$128700 - $143000
White Heath, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$159000 - $191000
Williamson, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Webster, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Fawn Grove, PA
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$128700 - $143000
Lake Fork, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$159000 - $191000
Morrison, IL
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
North Greece, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Rochester, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$159000 - $191000
Walworth, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$65700 - $73000
Upper Marlboro, MD
Perform maintenance tasks such as lubrication, inspection, mechanical alignment, and vibration monitoring, coordinating with Operations staff to ensure continuity of service. As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$213300 - $237000
Bloomington, IL
Work with direct reports to ensure proper prioritization/scheduling/execution of work activities, establishment of sound operating work practices, and adequate monitoring of department performance to achieve safe and efficient plant operation, high availability, and fiscal responsibility. 12 years overall experience, which includes 4 years power plant, 4 years nuclear power plant experience and 3 years of supervisory or managerial experience.
Constellation Energy
$213300 - $237000
McLean, IL
Work with direct reports to ensure proper prioritization/scheduling/execution of work activities, establishment of sound operating work practices, and adequate monitoring of department performance to achieve safe and efficient plant operation, high availability, and fiscal responsibility. 12 years overall experience, which includes 4 years power plant, 4 years nuclear power plant experience and 3 years of supervisory or managerial experience.
Constellation Energy
$159000 - $191000
White Hall, MD
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$128700 - $143000
Beason, IL
All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.). As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future.
Constellation Energy
$159000 - $191000
Willow Street, PA
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).
Constellation Energy
$213300 - $237000
Farmer City, IL
Work with direct reports to ensure proper prioritization/scheduling/execution of work activities, establishment of sound operating work practices, and adequate monitoring of department performance to achieve safe and efficient plant operation, high availability, and fiscal responsibility. 12 years overall experience, which includes 4 years power plant, 4 years nuclear power plant experience and 3 years of supervisory or managerial experience.
Constellation Energy
$43.67 - $58.09
Lincoln, MA
Capable of frequently standing walking balancing sitting climbing (ladders, stairs, ramps, catwalks, stacks and the like as required) stooping squatting crouching crawling kneeling reaching grasping pushing pulling lifting (min. Perform the duties of a liquefied natural gas (LNG) terminal operator in a 12-hour daily rotational shift environment, including holiday, weekends, and nights.
Constellation Energy
$159000 - $191000
Macedon, NY
Degree from a 4-year program or equivalent in engineering, engineering technology or physical sciences, or professional engineer license, and more than 1.5-years as a qualified non-licensed operator or a supervisor or manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. 1.5-years or more in a position equivalent to Reactor Operator (or Supervisor) at military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor).