API-RP-576

More documents

Recommendations

Info

Fion Zhang/ Charlie Chong • Inspection, testing, maintenance, and setting of the pilot mechanism may be handled separately from the main valve. • the set pressure of some types of pilots may be accurately tested while the valve is in service. • Due to the variety of pilot-operated valves available, the valve manufacturer's recommendations for inspection, repair, and testing should be consulted and followed.
6.2.21 Inspection, Testing, Maintenance and Setting of Weight-loaded Pressure - and / or Vacuum-vents on Tanks • They are prone to failure by sticking. • Set pressure is usually a standard 0.5 oz/in.2 (0.215 kPa), but may go as high as 24 oz/in.2 (10.34 kPa).] 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 and 36:
Basic Function of a Spring Loaded S
Page 37 and 38:
Valve Closed. In a direct spring lo
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
Page 49 and 50:
3.3.4 maximum operating pressure Th
Page 51 and 52:
Fion Zhang/ Charlie Chong Keywords:
Page 53 and 54:
3.4.5 burst-pressure tolerance The
Page 55 and 56:
3.4.10 marked burst pressure or rat
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
Page 67 and 68:
Fion Zhnag/ Charlie Chong
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
Page 77 and 78:
http://www.leser.com/en/products/do
Page 79 and 80:
Page 81 and 82:
Conventional safety valves Fig. 9.2
Page 83 and 84:
Types Mediums Limitations Safety-re
Page 85 and 86:
4.7.3 Limitations Balanced safety-r
Page 87 and 88:
Fion Zhnag/ Charlie Chong Fig. 9.2.
Page 89 and 90:
Fion Zhnag/ Charlie Chong http://ww
Page 91 and 92:
Page 93 and 94:
4.8 Pilot-operated Pressure-relief
Page 95 and 96:
What is a Pilot operated safety val
Page 97 and 98:
4.8 Pilot-operated Pressure-relief
Page 99 and 100:
Figure 9—High-pressure Pilot-oper
Page 101 and 102:
Page 103 and 104:
4.8.2 Applications Pilot-operated s
Page 105 and 106:
4.9 Pressure- and/or Vacuum-vent Va
Page 107 and 108:
4.9.1 General. • A pressure- and/
Page 109 and 110:
Figure 7—Low-pressure Diaphragm-t
Page 111 and 112:
Figure 10—Weight-loaded Pallet Ve
Page 113 and 114:
Figure 11—Spring and Weight-loade
Page 115 and 116:
Page 117 and 118:
5 Causes of Improper Performance Fi
Page 119 and 120:
Fion Zhang/ Charlie Chong Figure 22
Page 121 and 122:
Figure 25—Monel Rupture Disks Cor
Page 123 and 124:
Fion Zhang/ Charlie Chong
Page 125 and 126:
Page 127 and 128:
Fion Zhang/ Charlie Chong Figure 35
Page 129 and 130:
5.1 Corrosion Fion Zhang/ Charlie C
Page 131 and 132:
Corrosion is a basic cause of many
Page 133 and 134:
http://www.valveworld.net/safetyequ
Page 135 and 136:
Because there is metal-to-metal con
Page 137 and 138:
Basic interferometry The interferen
Page 139 and 140:
As light travels through the Optica
Page 141 and 142:
Example: 1 a series of fringes indi
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Causes of damaged valve seats; 1. C
Page 149 and 150:
Spring failures. 2 modes of failure
Page 151 and 152:
Page 153 and 154:
Fion Zhang/ Charlie Chong The size
Page 155 and 156:
Incorrect calibration of pressure g
Page 157 and 158:
How to adjust a PSV The spring dete
Page 159 and 160:
http://www.cicpro.com/products/safe
Page 161 and 162:
The design of the shroud must be su
Page 163 and 164:
Adjustment pin affect the character
Page 165 and 166:
Page 167 and 168:
5.5 Plugging and Sticking Fion Zhan
Page 169 and 170:
5.6 Misapplication of Materials Fio
Page 171 and 172:
Typical ball valve material selecti
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
5.7 Improper Location, History, or
Page 179 and 180:
Fion Zhang/ Charlie Chong V-203
Page 181 and 182:
Page 183 and 184:
Rough handling can occur during;
Page 185 and 186:
The following table summarises the
Page 187 and 188:
Greater differentials between opera
Page 189 and 190:
5.10 Improper Discharge Piping Test
Page 191 and 192:
Fion Zhang/ Charlie Chong When hydr
Page 193 and 194:
Fion Zhang/ Charlie Chong the bello
Page 195 and 196:
5.11 Improper Handling, Installatio
Page 197 and 198:
Rupture disk problems are often ass
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
6.1 Reasons for Inspection and Test
Page 211 and 212:
6.2.2 Safety 1. proper authority an
Page 213 and 214:
National Board approved ASME stamps
Page 215 and 216:
The Kdr or aW value can vary accord
Page 217 and 218: 6.2.5 Removal of Device from System
Page 219 and 220: Exercise; Dismantling of PSV Fion Z
Page 221 and 222: Highly Reactive Materials Water-Rea
Page 223 and 224: 6.2.7 Inspection of Adjacent Inlet
Page 225 and 226: Fion Zhang/ Charlie Chong Rupture d
Page 227 and 228: 6.2.10 Visual Inspection This inspe
Page 229 and 230: 6.2.11 Dismantling of Valve. Disman
Page 231 and 232: Fion Zhang/ Charlie Chong
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
Page 261 and 262: ASME BPVC Section I requires; • B
Page 267: 6.2.20 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 and 284: 7.3 Responsibilities Some companies
Page 285 and 286: Annex A (informative) Pressure-reli
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
show all

API-RP-576

Create successful ePaper yourself

Delete template?

Save as template?