Instrumentation for Nuclear Applications
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Instrumentation for Nuclear Applications

Nuclear Instrumentation Overview Delta Controls has been designing and manufacturing instrumentation for the power and process industries for over 65 years and has served the nuclear industry in the UK since the first nuclear reactors were designed and built over 55 years ago. A specialist in pressure, temperature and flow instrumentation, Delta has provided a range of generic and bespoke instruments to the industry across all the UK Nuclear Fleet including Magnox, AGR, PWR and PFR. Delta has also worked extensively on decommissioning projects, fuel processing and reprocessing, working with...

Nuclear Instrumentation Overview Nuclear S20 Series Pressure Switch Nuclear 300 Series Differential Pressure Switch Nuclear 700 Series Temperature Switch Nuclear 200 Series Pressure Switch Air Flow Transmitter / Switch Fast Response Temperature Switch

Nuclear Switch Test Programme Nuclear Product Qualification Instrumentation used in the Nuclear Island of a Nuclear Power Plant are required to survive seismic and radiation exposure of different severity levels depending on the location on the plant and the application. Seismic Delta has subjected various instruments to testing regimes that meet the requirements of IEEE Standard 323-1974, IEEE Standard 344-1975 and the RCC-E Code (Design and Construction Rules for Electrical Equipment of Nuclear Islands) . This qualification involved the accelerated ageing of the products (thermal aging,...

Nuclear Switch Test Programme Seismic Qualification In separate test programmes Delta’s products were seismically tested using the random multi-frequency (RMF) test requirements of Standard IEEE 344-1975/1987 and were subjected to tri-axial RMF test levels as shown below, and also to the spectra as defined in the RCC-E Code Seismic SSE Test Levels (OBE 70% SSE) 12 Delta Switches being seismically tested at the SOPEMEA test facility in France to the RCC-E seismic spectra LOCA/HELB Accident Simulation Following the aging programme and the seismic tests the products were subjected to a HELB...

Nuclear Grade Pressure Switch 200 Series Ÿ Qualified Harting 7D, EGS QDC and Souriau connectors available Ÿ Delta Controls Microswitch tested to meet requirements of RCC-E K2 Ÿ Best in class accuracy of ± 0.5% Ÿ FEP and EPDM seals and gaskets suitable for exposure to radiation Ÿ Weatherproof and Flameproof models Ex d IIC - ATEX Ÿ Ranges available up to 75 Bar (1,000 psi) Ÿ Precision stainless steel mechanism for arduous atmospheres and high humidity Ÿ Set point adjustable over whole range against calibrated scale with tamperproof adjustment Ÿ Precise and accurate operation guaranteed by...

Nuclear Grade Differential Pressure Switch 300 Series Ÿ Qualified Harting 7D, EGS QDC and Souriau connectors available Ÿ Delta Controls Hermetic Microswitch tested to meet requirements of RCC-E K2 Ÿ Best in class accuracy of ± 1% Ÿ FEP and EPDM seals and gaskets suitable for exposure to radiation Ÿ Weatherproof and Flameproof models EEx d IIC - ATEX Ÿ Static pressure up to 250 bar (3500 psi) Ÿ Precision stainless steel mechanism for arduous atmospheres and high humidity Ÿ Set point adjustable over whole range against calibrated scale with tamperproof adjustment Ÿ Models for fixed and...

Nuclear Grade Temperature Switch 700 Series Ÿ Qualified Harting 7D, EGS QDC and Souriau connectors available Ÿ Delta Controls Microswitch tested to meet requirements of RCC-E K2 Ÿ Best in class accuracy of ± 0.5% Ÿ FEP and EPDM seals and gaskets suitable for exposure to radiation Ÿ Weatherproof and Flameproof models EEx d IIC - ATEX Ÿ Set point ranges up to 300°C (580°F) Ÿ Rigid and semi-rigid thermal system options Ÿ Precision stainless steel mechanism for arduous atmospheres and high humidity Ÿ Set point adjustable over whole range against calibrated scale with tamperproof adjustment Ÿ...

Fast Response Temperature Switch 720 Series Fast reaction air temperature switches are used throughout a nuclear power plant to detect sudden rises in ambient temperature. Delta has optimised the design of this product to react very quickly to temperature change and can provide fast early warning of possible problems in the plant. This model consists of a sensing element manufactured from thin walled copper tube filled with a volatile fluid. By keeping the length to diameter ratio high, the surface area of the sensing element is maximised achieving a faster response to temperature changes...

Air Flow Transmitter / Switch The 588 Series of Flow Transmitters and Switches have been used in a variety of applications in the nuclear industry including HVAC systems and other air flow ducting where positive measurement of Flow is critical for plant and personnel safety. The latest variant of the Flow Transmitter has an integrated switch for simple alarm applications. The Transmitter is also under assessment to SIL 1 levels under the EMPHASIS assessment process. Flow rates from 0.8 m/s and up to 38.5 m/s Small bore diameter flow transmitters are also available SIGNAL CONNECTOR...

Commercial Grade Instrumentation Delta Controls is one of the leading companies worldwide for the design and manufacture of robust, reliable and competitively priced industrial and high performance transmitters and switches - all internationally approved for use in hazardous areas for control, safety alarm and shutdown applications. Pressure Switches Utilising simple design principles and high quality engineering, more than 1 million different temperature, pressure differential pressure and flow switches have been supplied to customers worldwide. Our customers can depend on the technical...

About Delta Controls Delta Controls has built a global reputation over 65 years for its expertise in the design and manufacture of reliable, high quality instrumentation for the power and process industries. Delta offers both customised and standard solutions for process monitoring, alarm and shutdown applications, backed by local support from a worldwide network of carefully selected, professional and fully trained representatives. Quality is a cornerstone of the company's success. This is recognised by industry and international approvals that cover every aspect of Delta Controls'...