Metso Jamesbury 4000 Series Safety Manual Download | Manualshive

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10SM 4000 en

• 5/2017

Jamesbury 3-Piece Ball Valves

Series 4000

Threaded End, Socket Weld, Butt Weld

Rev. 2.0

Safety Manual

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Summary of Contents for Jamesbury 4000 Series

Page 1: ...10SM 4000 en 5 2017 Jamesbury 3 Piece Ball Valves Series 4000 Threaded End Socket Weld Butt Weld Rev 2 0 Safety Manual ...

Page 2: ...ems 3 3 1 Safety function 3 3 2 Environmental and application restrictions 4 3 3 Useful lifetime 4 3 4 Connecting the 3 piece ball valve to a safety system 4 3 5 Random hardware integrity 5 3 6 Systematic integrity 5 3 7 Additional information 5 4 Installation 6 5 Operation 6 5 1 Recommended proof test 6 5 2 Recommended partial stroke test 6 5 3 Maintenance 7 6 References 7 Appendix 1 Examples of ...

Page 3: ...element is to either isolate block the process or to release or vent blowdown energy such as pressure from the vessel 2 Structure of the 3 piece ball valves 2 1 Components and description of use See the appropriate IMO 203 or 210 or the documentation available for the valve for a detailed technical description 2 2 Permitted valve types The information in this manual pertaining to functional safety...

Page 4: ...1 Partial Stroke test 5 2 Maintenance 5 3 have been considered accordingly The useful lifetime is the time period after burn in and before wear out when the failure rate of a simple item is more or less constant Note that the design life of the valve is higher and should not be con fused with useful lifetime used in these reliability evaluations 3 4 Connecting the 3 piece ball valve to a safety sy...

Page 5: ...ure Fraction SFF N A Dangerous failures λD failures hour 1 76E 8 Dangerous undetected failures λDU failures hour 1 76E 8 Dangerous detected failures PST λDD failures hour 0 Safe failures λS failures hour 2 99E 8 Diagnostic coverage represents common valve actuator assemblies equipped with an intelligent part stroke device such as the Neles ValvGuard The DC value has been used to calculate λDU and ...

Page 6: ... visual inspection Check that the SIS valve is in the normal position and verify that all ac cessories are operating according the specification for the SIS valve normal operation Inspect visually that there is no observable deterioration of the SIS valve Record all results and observations into the corresponding database with necessary audit trail information Remove the SIS valve bypassing if use...

Page 7: ... lifetime and with the severity of service Only authorized Metso replacement parts should be used Soft sealing materials especially are affected by aging and useful lifetime depends strongly on the application Therefore the condition of those components should be checked carefully during proof testing In optimum operating conditions the maintenance interval may be extended up to 10 years The estim...

Page 8: ...actuator equipped with solenoid valve control for safety action Appendix 2 Equations to calculate PFD for 1oo1 and 1oo1D final elements These equations correspond to IEC 61508 and ISA TR 96 05 01 An average value of probability of failure on demand for 1oo1D architecture with diagnostics is given by the equation PFDAVG DC λD TIPST 2 1 DC λD TIFST 2 λD MTTR where DC is diagnostic coverage fraction ...

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