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Rules for Mechanical Design and Pressure Testing for Detector vessel

Rules for Mechanical Design and Pressure Testing for Detector vessel. Nathalie de Ruette Detector Lab Coordination officer European Spallation Source ERIC 2019-01-18. Need to Fulfil European and Swedish Laws, and ESS Rules. AFS 2016:1 Pressure retaining equipment.

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Rules for Mechanical Design and Pressure Testing for Detector vessel

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  1. Rules for Mechanical Designand Pressure Testing for Detector vessel Nathalie de Ruette Detector Lab Coordination officer European Spallation Source ERIC 2019-01-18

  2. Need to Fulfil European and Swedish Laws, and ESS Rules AFS 2016:1 Pressureretainingequipment ESS Rules for Quality Regulation - Mechanical Equipment PED 2014/68/EU EN 13458 AFS 2017:3 Use and inspection of pressurize equipment SSM Special conditions for ESS in Lund ESS requirements EN 13445 Code RCC-MRx AFS 2006:8 Overpressure testing EN 13480

  3. CoC – Certificate of Compliance/Conformity What are the requirements? Documentation before starting manufacturing/Installation Documentation after Manufacturing/Installation

  4. 1. Determine Quality Classes Safety classes regarding emission of radioactive substances: MQC1 – 4 • Based on the risk assessment (see ESS-0033258 and ESS-0016468) • MQC4: the design and manufacture of pressure equipment where deficiencies or malfunctions will not cause emission of radioactive substances • Assume no emission from detector vessels • Argon activation very small: E. Dian, K. Kanaki, R.J. Hall-Wilton, P. Zagyvai, Sz. Czifrus, "Neutron activation and prompt gamma intensity in Ar/CO2-filled neutron detectors at the EuropeanSpallation Source", AppliedRadiation and Isotopes 128C (2017) pp. 275-286, DOI:10.1016/j.apradiso.2017.06.003, arXiv:1701.08117

  5. 1. Determine Quality Classes For MQC4, the regulations AFS 2016:1 (PED, 2014/68/EU), AFS 2016:2 and AFS 2017:3 issued by the Swedish Work Environment Authority apply. • AFS 2017:3 defines inspection class A-B-C Pressure Vessel

  6. Find PED Category of a Vessel PED Category Calculator Inert Reactive We are investigating the implications of operating at 0.5 bar

  7. Find PED Category of a Vessel

  8. 2. Documentations Minimum documentation after manufacturing Most documents already exist

  9. 3. Inspection and Testingrequirements ESS Inspection Points, “EIP”: Describe the scope of the inspection ESS Examination Procedures “EEP”: gives references and instructions (scope, performance, acceptance criteria and reporting) for each EIP ESS-0108754 RESSQ-Mech Part C - Table of Contents of ESS Examination Procedures (EEP)

  10. Example of EIP

  11. Example of EEP AFS 2006:8 TESTING WITH OVERPRESSURE OR UNDERPRESSURE • Pressure testing with gas only. • The requirement on accreditation does not apply if: • The control pressure is 0.03 bar or lower • The control pressure is not more than 3 bar and P x V is not greater than 30 bar x litre

  12. 4. Detector Vessel Pressure Testing We need to follow the regulations (AFS 2006:8) P x V > 30 bar x litre! Can we do the testing inhouse? Yes, if: • we use liquids (water), or • we reduce the volume of the vessel, or • we get accreditation for the people (≈ 10 already accredited) • and facility (long and complicated). Otherwise, we need to outsource the testing to an accredited body.

  13. Conclusion It’s complicated!!! • We need help! • Try to avoid complications whenever possible by staying in MQC4-C and outside the PED • Quality could not provide the support needed

  14. What do we need to do to: • Purchase mechanical equipment • Manufacture mechanical equipment in-house and outsourced • Purchase installations and repairs • Install or repair under own management

  15. Mechanical Equipment: Generic term for equipment or components that serve to: • Receive external or internal pressure • Bear mechanical loads • Protect such pressure- and load bearing equipment referred to in the first and second indents (above) • Hold or control components in the intended manner • Include supports, holders, hangers and locking devices (not for lifting or moving components).

  16. ESS Examination Procedures EEP 2-7XX = Examination of base material and finished part EEP 3-7XX = Examination of manufacturing, welding and other joining EEP 4-7XX = Examination of completed mechanical equipment or subassemblies EEP 5-7XX = Examination of installation, welding and other joining EEP 6-7XX = Examination of completed installation of a system, parts of a system or repair of installed equipment

  17. CHESS

  18. CHESS

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