Status of a European Standard for the protection of helium cryostats against excessive pressure

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Grohmann, S.^1^2 ; Barthé Lé My, H.^3 ; Down, R.^4 ; Ercolani, E.^5 ; Fournel, J.-L.^6 ; Henriques, A.^7 ; Krichler, M.^8 ; Otte, W.^9 ; Parma, V.^7 ; Pengo, R.^10 ; Poncet, J.-M.^5 ; Reinhardt, M.^11 ; Soika, R.^12 ; Vallcorba-Carbonell, R.^13 ; Weber, C.^1 ; Zick, G.^6 ; Zoller, C.^14

KIT, Institute of Technical Physics, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen

76344, Germany^1

KIT, Institute of Technical Thermodynamics and Refrigeration, Engler-Bunte-Ring 21, Karlsruhe

76131, Germany^2

Air Liquide Head Office, 75 Quai d'Orsay, Paris

75321, France^3

STFC, Rutherford Appleton Laboratory, Didcot

OX11 0QX, United Kingdom^4

Univ. Grenoble Alpes, CEA INAC-SBT, Grenoble

38000, France^5

Air Liquide Advanced Technologies, 2 Rue de Clé menciere-B.P.15, Sassenage

38360, France^6

CERN, Geneva

CH-1211, Switzerland^7

Bilfinger Noell GmbH, Alfred-Nobel-Str.20, Würzburg

97080, Germany^8

Air Liquide Deutschland GmbH, Fü tingsweg 34, Krefeld

47805, Germany

(10) INFN, Legnaro National Laboratories, Viale dell'Universita 2, Legnaro

35020, Italy

(11) Herose GmbH, Elly-Heuss-Knapp-Str. 12, Bad Oldesloe

23843, Germany

(12) Linde Kryotechnik AG, Daettlikonerstrasse 5, Pfungen

8422, Switzerland

(13) CEA Saclay, Gif-sur-Yvette

91191, France

(14) PSI, Forschungsstrasse 111, Villigen

5232, Switzerland^9

关键词: Cryogenic vessel;    Electrical heater;    European committee for standardizations;    European Standards;    International standards;    Overpressure protection;    Pressure equipment directive;    Technology application;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012171/pdf
DOI  :  10.1088/1757-899X/502/1/012171

来源: IOP

【 摘 要 】

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.