API-RP-576

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7.4 Sample Record and Report System The forms in Annex B are samples of records and reports. Much of the report writing, recordkeeping, inspection, and test scheduling handled by the reports and records should be managed with an electronic database system. API576 Charlie Chong/ Fion Zhang/ He Jungang / Li Xueliang
Annex A (informative) Pressure-relief Valve Testing API576 Charlie Chong/ Fion Zhang/ He Jungang / Li Xueliang
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API-RP-576 Inspection of Pressure-r
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Fion Zhang/ Charlie Chong Speaker:
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5 Causes of Improper Performance 5.
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1 Scope Fion Zhang/ Charlie Chong
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The recommendations in this publica
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This publication does not cover tra
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pressure-relief valves Fion Zhang/
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pilot-operated pressure-relief valv
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upture disks Fion Zhang/ Charlie Ch
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2 Normative References Fion Zhang/
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• ASME PTC 25, Pressure Relief De
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3.1 General For the purposes of thi
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galling Fion Zhang/ Charlie Chong
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3.2 Dimensional Characteristics of
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inlet size outlet size Fion Zhang/
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Fion Zhang/ Charlie Chong huddling
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Fion Zhang/ Charlie Chong lift
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Basic Function of a Spring Loaded S
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Valve Closed. In a direct spring lo
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The pressure below the valve must i
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Fion Zhang/ Charlie Chong F p = p*A
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Functional Diagram. The following d
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3.3 Operational Characteristics—S
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3.3.3 maximum allowable working pre
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3.3.4 maximum operating pressure Th
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Fion Zhang/ Charlie Chong Keywords:
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3.4.5 burst-pressure tolerance The
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3.4.10 marked burst pressure or rat
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4 Pressure-relieving Devices Fion Z
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4.2 Pressure-relief Valve Fion Zhna
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4.3 Safety Valve. Fion Zhnag/ Charl
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4.3.1 General. A safety valve is a
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4.3.2 Applications A safety valve i
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Fion Zhnag/ Charlie Chong
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4.4.1 General. A relief valve is a
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4.5 Safety-relief Valve. Fion Zhnag
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4.6 Conventional Safety-relief Valv
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4.6 Conventional Safety-relief Valv
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http://www.leser.com/en/products/do
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Conventional safety valves Fig. 9.2
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Types Mediums Limitations Safety-re
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4.7.3 Limitations Balanced safety-r
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Fion Zhnag/ Charlie Chong Fig. 9.2.
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Fion Zhnag/ Charlie Chong http://ww
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4.8 Pilot-operated Pressure-relief
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What is a Pilot operated safety val
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4.8 Pilot-operated Pressure-relief
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Figure 9—High-pressure Pilot-oper
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4.8.2 Applications Pilot-operated s
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4.9 Pressure- and/or Vacuum-vent Va
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4.9.1 General. • A pressure- and/
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Figure 7—Low-pressure Diaphragm-t
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Figure 10—Weight-loaded Pallet Ve
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Figure 11—Spring and Weight-loade
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5 Causes of Improper Performance Fi
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Fion Zhang/ Charlie Chong Figure 22
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Figure 25—Monel Rupture Disks Cor
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Fion Zhang/ Charlie Chong
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Fion Zhang/ Charlie Chong Figure 35
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5.1 Corrosion Fion Zhang/ Charlie C
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Corrosion is a basic cause of many
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http://www.valveworld.net/safetyequ
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Because there is metal-to-metal con
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Basic interferometry The interferen
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As light travels through the Optica
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Example: 1 a series of fringes indi
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Causes of damaged valve seats; 1. C
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Spring failures. 2 modes of failure
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Fion Zhang/ Charlie Chong The size
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Incorrect calibration of pressure g
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How to adjust a PSV The spring dete
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http://www.cicpro.com/products/safe
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The design of the shroud must be su
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Adjustment pin affect the character
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5.5 Plugging and Sticking Fion Zhan
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5.6 Misapplication of Materials Fio
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Typical ball valve material selecti
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5.7 Improper Location, History, or
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Fion Zhang/ Charlie Chong V-203
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Rough handling can occur during;
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The following table summarises the
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Greater differentials between opera
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5.10 Improper Discharge Piping Test
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Fion Zhang/ Charlie Chong When hydr
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Fion Zhang/ Charlie Chong the bello
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5.11 Improper Handling, Installatio
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Rupture disk problems are often ass
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6.1 Reasons for Inspection and Test
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6.2.2 Safety 1. proper authority an
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National Board approved ASME stamps
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The Kdr or aW value can vary accord
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6.2.5 Removal of Device from System
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Exercise; Dismantling of PSV Fion Z
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Highly Reactive Materials Water-Rea
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6.2.7 Inspection of Adjacent Inlet
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Fion Zhang/ Charlie Chong Rupture d
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6.2.10 Visual Inspection This inspe
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6.2.11 Dismantling of Valve. Disman
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Page 237 and 238: Portable Test Separator Internal &
Page 239 and 240: The pilot assembly and dome area co
Page 241 and 242: 6.2.13 Reconditioning and Replaceme
Page 243 and 244: Fion Zhang/ Charlie Chong Most test
Page 247 and 248: After the valve has been adjusted,
Page 249 and 250: Check for leakage during pressuriza
Page 257 and 258: 6.2.17 Completion of Necessary Reco
Page 259 and 260: when a valve operates in nonfouling
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Page 267 and 268: 6.2.20 Inspection, Testing, Mainten
Page 269 and 270: 6.2.21 Inspection, Testing, Mainten
Page 271 and 272: 6.3 Visual On-stream Inspection Vis
Page 273 and 274: 6.4.2 Frequency of Shop Inspection/
Page 275 and 276: Manufacturer’s Basis • Manufact
Page 277 and 278: API572, 6.4.3 Frequency of Visual O
Page 279 and 280: Routine • inspection least interf
Page 281 and 282: 7.1 Objective The primary objective
Page 283: 7.3 Responsibilities Some companies
Page 287 and 288: API576 Charlie Chong/ Fion Zhang/ H
Page 291 and 292: A.1 Need and Function of Test Block
Page 293 and 294: A.2 Testing with Air • Air is com
Page 295 and 296: A.4 Description of Test Block The s
Page 297 and 298: Key 1. test station 2. adaptor for
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