API-RP-576
API ICP Self Study Notes API ICP Self Study Notes
Force & pressure, area relations. Fion Zhang/ Charlie Chong
Valve Closed. In a direct spring loaded safety valve the closing force or spring force is applied by a helical spring which is compressed by an adjusting screw. The spring force is transferred via the spindle onto the disc. The disc seals against the nozzle as long as the spring force is larger than the force created by the pressure at the inlet of the valve. The figure shows the enlarged nozzle and disc area of a safety valve with the forces acting on the disc. Fion Zhang/ Charlie Chong
- Page 1 and 2: API-RP-576 Inspection of Pressure-r
- Page 3 and 4: Fion Zhang/ Charlie Chong Speaker:
- Page 5 and 6: 5 Causes of Improper Performance 5.
- Page 7 and 8: 1 Scope Fion Zhang/ Charlie Chong
- Page 9 and 10: The recommendations in this publica
- Page 11 and 12: This publication does not cover tra
- Page 13 and 14: pressure-relief valves Fion Zhang/
- Page 15 and 16: pilot-operated pressure-relief valv
- Page 17 and 18: upture disks Fion Zhang/ Charlie Ch
- Page 19 and 20: 2 Normative References Fion Zhang/
- Page 21 and 22: • ASME PTC 25, Pressure Relief De
- Page 23 and 24: 3.1 General For the purposes of thi
- Page 25 and 26: galling Fion Zhang/ Charlie Chong
- Page 27 and 28: 3.2 Dimensional Characteristics of
- Page 29 and 30: inlet size outlet size Fion Zhang/
- Page 31 and 32: Fion Zhang/ Charlie Chong huddling
- Page 33 and 34: Fion Zhang/ Charlie Chong lift
- Page 35: Basic Function of a Spring Loaded S
- Page 39 and 40: The pressure below the valve must i
- Page 41 and 42: Fion Zhang/ Charlie Chong F p = p*A
- Page 43 and 44: Functional Diagram. The following d
- Page 45 and 46: 3.3 Operational Characteristics—S
- Page 47 and 48: 3.3.3 maximum allowable working pre
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- Page 53 and 54: 3.4.5 burst-pressure tolerance The
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- Page 57 and 58: 4 Pressure-relieving Devices Fion Z
- Page 59 and 60: 4.2 Pressure-relief Valve Fion Zhna
- Page 61 and 62: 4.3 Safety Valve. Fion Zhnag/ Charl
- Page 63 and 64: 4.3.1 General. A safety valve is a
- Page 65 and 66: 4.3.2 Applications A safety valve i
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- Page 69 and 70: 4.4.1 General. A relief valve is a
- Page 71 and 72: 4.5 Safety-relief Valve. Fion Zhnag
- Page 73 and 74: 4.6 Conventional Safety-relief Valv
- Page 75 and 76: 4.6 Conventional Safety-relief Valv
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- Page 81 and 82: Conventional safety valves Fig. 9.2
- Page 83 and 84: Types Mediums Limitations Safety-re
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Force & pressure, area relations.<br />
Fion Zhang/ Charlie Chong
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