42 Engineering, engineering work; laboratory work namely scientific laboratory services, scientific and technological project management being services of engineers in the fields of energy and electronics, namely, scientific research; technical assistance being services of engineers, namely, computer software consultancy, computer hardware development, IT consulting services, consulting services in the field of energy; laboratory services and scientific and technological project management being services of engineers in the fields of energy, namely, scientific research; engineering work, namely, research, development, analysis, study and design work in the field of energy; consulting, expertise and testing of materials in the fields of energy being services of engineers; simulation namely calculation in the fields of energy and monitoring or energy production plants being services of engineers; scientific and industrial research, design, studies namely conduction feasibility studies, advice and information relating to environmental protection, sustainable development, renewable energies and the fight against climate change being services of engineers; environmental auditing services for sites, installations and equipment in the fields of energy and electronics, namely technical studies services; design, programming, updating, maintenance and rental of software used in the field of energy, renewable energies and the fight against climate change, electronics, and cyber security; chemistry services in the fields of energy and electronics; prevention of pollution risk relating to the activities developed in the fields of energy and electronics being services of engineers, namely, scientific testing, scientific research, chemical consultation services; monitoring of nuclear materials to detect temperature, leaks, degradation, being services provided by engineers; monitoring of nuclear installations and equipment to detect temperature, leaks, degradation, being services provided by engineers; security and monitoring in the nature of engineering services of plants and centers for warehousing, storage, processing, isotopic separation, reprocessing and recycling of fuels, ores, materials used in the nuclear field, nuclear materials, uranium, plutonium and nuclear wastes, nuclear power plants, nuclear reactors; design of computer systems and their safety; conducting scientific studies in the nature of research and feasibility studies in the field of mixed energy and impact on intelligent networks for transport and distribution of electrical energy; security services for computer networks and disseminated data, namely, administering digital certificates, and administering digital keys; analysis, design, development, maintenance and provision of information systems, applications, software, computer programs, Websites and computerized databases; engineering services in the nature of technical inspection of buildings under construction