CERN Accelerating science

Article
Title	Status of a European Standard for the protection of helium cryostats against excessive pressure
Author(s)	Grohmann, S (KIT, Karlsruhe, IKP ; KIT, Karlsruhe) ; Barthélémy, H (Air Liquide Head Office, Paris) ; Down, R (Rutherford) ; Ercolani, E (U. Grenoble Alpes) ; Fournel, J-L (Air Liquide, Sassenage) ; Henriques, A (CERN) ; Krichler, M (Bilfinger Noell GmbH, Wurzburg) ; Otte, W (Air Liquide Deutschland GmbH, Krefeld) ; Parma, V (CERN) ; Pengo, R (INFN, Legnaro) ; Poncet, J-M (U. Grenoble Alpes) ; Reinhardt, M (HKK, Bad Bevensen) ; Soika, R (Linde Kryotechnik, Pfungen) ; Vallcorba-Carbonell, R (Paris, CEA) ; Weber, C (KIT, Karlsruhe, IKP) ; Zick, G (Air Liquide, Sassenage) ; Zoller, C (PSI, Villigen)
Publication	2019
Number of pages	5
In:	IOP Conf. Ser. Mater. Sci. Eng. 502 (2019) 012171
In:	27th International Cryogenic Engineering Conference - International Cryogenic Materials Conference 2018, Oxford, United Kingdom, 3 - 7 Sep 2018, pp.012171
DOI	10.1088/1757-899x/502/1/012171
Subject category	Accelerators and Storage Rings
Abstract	The overpressure protection of various types of cryogenic vessels is covered by a number of International Standards. Helium cryostats, however, include additional components such as superconducting magnets and cavities, electrical heaters and control valves with associated piping, which significantly influence the potential risk. At the European Committee for Standardization CEN, a new working group was hence founded as CEN/TC 268/WG6, dealing with ‘Specific helium technology applications’. Its aim is to develop a European Standard for the protection of helium cryostats against excessive pressure that is harmonized with the European Pressure Equipment Directive. It will cover the typical conditions in accidental scenarios in order to harmonize the risk assessment as well as design practices for the pressure relieving systems. We report about the general concept of this new Standard, its structure and content, and the actual status of the project.
Copyright/License	publication: (License: CC BY 3.0)

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