IEC 60737:2010
Nuclear power plants - Instrumentation important to safety - Temperature sensors (in-core and primary cooling circuit) - Characteristics and test methods

Standard No.

IEC 60737:2010

Release Date

2010

Published By

International Electrotechnical Commission (IEC)

Latest

IEC 60737:2010

Replace

IEC 45A/800/FDIS:2010 IEC 60737:1982

Scope

This International Standard is applicable to general aspects of system and component design, manufacturing and test methods for temperature sensors used in-core and for the primary coolant circuit in nuclear power reactors. These sensors include thermocouples and RTDs (Resistance Temperature Detector–RTD). Emphasis is placed on the features specific to the nuclear application and recommendations concerning components and sensors are made only when they relate to the containment of such components within the reactor primary envelope and/or in high radiation fields. The conditions imposed by reactor use are often different from those which occur in nonnuclear applications. Parts of the in-core system may be located in very severe environments. Exposure to high neutron and gamma radiations is liable to cause error due to nuclear transformations, heating and structural changes, and to affect the mechanical and electrical properties of the equipment so that extra care has to be taken in the standards adopted for installations and in the choice of materials. Furthermore, design consideration needs to be given to the effects of high environmental pressure, high temperature, temperature gradients and temperature cycling as well as to the way in which the temperature measuring system could influence the safety or economic performance of the reactor. The consequences of nuclear conditions for temperature sensors lead to strong requirements regarding qualification. This standard deals with specific requirements for nuclear applications of temperature sensors. It has two purposes: a) to provide a guide which will help to ensure that the reactor conditions do not damage the temperature sensors; b) to ensure that the in-core temperature measuring system and the sensor installation do not prejudice the safe operation and the availability of the reactor. Statements of general applicability are made but detailed consideration is restricted to thermocouples and RTDs.

IEC 60737:2010 Referenced Document

• IEC 60584-2 Amendment 1 Thermocouples Part 2: Tolerances (Edition 1.0)
• IEC 60584-3 Thermocouples - Part 3: Extension and compensating cables - Tolerances and identification system*， 2021-02-16 Update
• IEC 60709 Nuclear power plants - Instrumentation, control and electrical power systems important to safety - Separation*， 2018-04-18 Update
• IEC 60751 Industrial platinum resistance thermometers and platinum temperature sensors*， 2022-01-27 Update
• IEC 60780 Nuclear power plants - Electrical equipment of the safety system - Qualification
• IEC 60980 Recommended practices for seismic qualification of electrical equipment of the safety system for nuclear generating stations
• IEC 61226 Nuclear power plants - Instrumentation, control and electrical power systems important to safety - Categorization of functions and classification of systems*， 2020-04-29 Update
• IEC 61513 Nuclear power plants - Instrumentation and control important to safety - General requirements for systems*， 2011-08-01 Update
• IEC 61515 Mineral insulated metal-sheathed thermocouple cables and thermocouples*， 2016-04-01 Update
• IEC 62342 Nuclear power plants - Instrumentation and control systems important to safety - Management of ageing
• IEC 62385 Nuclear power plants - Instrumentation and control important to safety - Methods for assessing the performance of safety system instrument channels
• IEC 62397 Nuclear power plants - Instrumentation and control important to safety - Resistance temperature detectors*， 2022-11-23 Update
• IEC 62460 Tableaux température – Force électromotrice (F.?.M.) pour les combinaisons de couples thermoélectriques à éléments purs (Edition 1.0)

IEC 60737:2010 history

• 2010 IEC 60737:2010 Nuclear power plants - Instrumentation important to safety - Temperature sensors (in-core and primary cooling circuit) - Characteristics and test methods
• 1982 IEC 60737:1982 In-core temperature or primary envelope temperature measurements in nuclear power reactors. Characteristics and test methods