Nuclear Instrumentation Related Services

Mirion offers support through it's experiences engineers for:

• Developing comprehensive technical specifications for radiation monitoring systems and nuclear instrumentation systems in new or existing NPPs or research reactors.
• Detailed planning of the replacement of aging equipment in existing nuclear facilities.
• Demonstrating the suitability of the proposed equipment by a thorough analysis.

Equipment qualification is the procedure to “confirm, that the equipment is capable of meeting, throughout its operation life, the requirements for performing safety functions while subject to the environmental conditions (e.g. vibration, temperature, pressure, jet impingement, radiation, humidity) existing at the time of need. These environmental conditions shall include the variations expected during normal operation, anticipated operational occurrences and accident conditions.”

"Equipment Qualification in operational nuclear power plants: Upgrading, preserving and reviewing“ - IAEA; Safety Reports Series No.3

EQ is an integral part of the equipment life cycle to ensure the quality of the equipment and its safety function on demand.

This includes complex processes such as e.g. functional checks, aging evaluation, environmental compliance, survivability to seismic events, radiation robustness and operation during postulated initiating events / design basis accidents and may be proven by

• Type testing
• Operating experience
• Analysis
• Combined methods

Where the preferred approach is type-testing.

Mirion has more than fifteen (15) years of experience in preparation, realization and conservation of international qualification campaigns in the nuclear market, including qualification of various types of sensors, detectors, cables, I&C equipment, electrical components and transducers as well as on complete gamma radiation monitoring systems, neutron flux monitoring system including electrical cabinets complying to highest demands (Class 1E equipment, Software category A).

Equipment qualification at Mirion is performed by an independent Equipment Qualification (EQU) team.

In order to standardize the EQ process, Mirion has implemented a dedicated qualification process including three process phases – as also proposed by IAEA Safety Standard SSG-69 “ Equipment Qualification for Nuclear Installations” as follows:

Phase 1 - Qualification preparation This phase defines all needed inputs required for qualification testing and specifies the test severities and test realization details to comply with customer requirements and the required standards.

Phase 2 - Qualification testing All practical testing or analysis, including full results documentation as reuqired by standards is realized.

Phase 3 - Qualification completion All test results are summarized and arranged in a structured and traceable way.

Mirion is experienced to test and comply to various national and international regulatory framework requirements for safety related and non safety related equipment such as e.g.

Testing on equipment under test (EUT) is done either in-house or externally in suitable accredited laboratories with relevant test parameters traceable to a national standard and may include

• Initial / functional tests
• Environmental tests
• EMI/RFI tests
• Nuclear test (in radiation test laboratories or test reactors)
• Aging tests (thermal, radiation, wear)
• Vibration & Shock tests
• Seismic tests
• DBA tests (e.g. LOCA, HELB, accident radiation, submergence, chem. spray)
• Severe Accident tests

We provide customized qualification services to meet your specific requirements.

For further information please contact us and we’ll be happy to support your project / qualification tasks.

Nuclear tests

Seismic tests	EMI tests

proTK™ is a flexible and highly customizable platform. Every system is individually engineered and configured to comply with the requirements.

proTK™ signal processing units can be configured for use in NFMS or RMS but also in other specific applications.
Examples: Process Controller APC 250, DBK 250 for Boron Concentration Monitor BM 501, etc.

Engineering and development of custom detectors, assemblies, support structures, signal processing, maintenance tools, and software, etc.

• Equipment installation and commissioning.
• Dismantling old equipment during refurbished products.
• Extensive proTK™ related or customized trainings to radiation professionals to preserve their qualification.
• proTK™ equipment is low maintenance, but if required, Mirion offers extensive support beyond the warranty period through qualified and experienced technicians and engineers.