Inspection Practices for Pressure Vessels

More documents

Recommendations

Info

3.1.27 risk-based inspection RBI A risk assessment and management process that is focused on inspection planning <strong>for</strong> loss of containment of pressurized equipment in processing facilities, due to material deterioration. These risks are managed primarily through inspection in order to influence the probability of failure. 3.1.28 strip lining Strips of metal plates or sheets that are welded to the inside of a vessel wall. Normally, the strips are of a more corrosion-resistant or erosion-resistant alloy than the vessel wall and provide additional corrosion/erosion resistance. 3.1.29 temper embrittlement The reduction in toughness due to a metallurgical change that can occur in some low alloy steels, e.g. 2 1/4Cr-1Mo, as a result of long term exposure in the temperature range of about 650 o F to 1100 o F (345 o C to 595 o C). Fion Zhang/ Charlie Chong
3.1.30 testing Within this document, testing generally refers to either pressure testing whether per<strong>for</strong>med hydrostatically, pneumatically or a combination hydrostatic/pneumatic, or mechanical testing to determine such data as material hardness, strength, and notch toughness. Testing, however, does not refer to NDE techniques such as PT, MT, etc. 3.1.31 weld overlay A lining applied by welding of a metal to the surface. The filler metal typically has better corrosion and/or erosion resistance to the environment than the underlying metal. Fion Zhang/ Charlie Chong
Page 1 and 2: Inspection Practices for Pressure V
Page 3 and 4: Fion Zhang/ Charlie Chong
Page 5 and 6: Contents 1 Scope. 2 Normative Refer
Page 7 and 8: 10 Condition Assessment and Repair.
Page 9 and 10: 2 Normative References The followin
Page 11 and 12: 3 Terms and Definitions 3.1 Definit
Page 13 and 14: 3.1.8 design temperature The temper
Page 15 and 16: 3.1.18 maximum allowable working pr
Page 17: 3.1.24 pressure vessel engineer One
Page 21 and 22: 4 Introduction to Pressure Vessels
Page 23 and 24: 4.1 General 4.2 Methods of Construc
Page 25 and 26: Columns, towers, drums, reactors, h
Page 27 and 28: Pressure vessels are designed in va
Page 31 and 32: 4.2 Methods of Construction Prior t
Page 33 and 34: Fion Zhang/ Charlie Chong The cylin
Page 35 and 36: Fion Zhang/ Charlie Chong Hydrocrac
Page 37 and 38: 4.3 Materials of Construction Carbo
Page 39 and 40: Tubesheets for exchanger bundles ar
Page 43 and 44: If carbon steel would not resist th
Page 45 and 46: Strip-lined Vessel Fion Zhang/ Char
Page 47 and 48: Fion Zhang/ Charlie Chong Overlay p
Page 53 and 54: Some pressure vessels have heat exc
Page 55 and 56: 1. stationary head—channel cover
Page 63 and 64: Thermal / catalytic reactor Fion Zh
Page 65 and 66: Separator to separate gases Fion Zh
Page 67 and 68: Chemical treating unit Fion Zhang/
Page 69 and 70:
Fion Zhang/ Charlie Chong Regenerat
Page 71 and 72:
Figure 7—Vertical Heat Exchanger
Page 73 and 74:
Figure 12—Exchangers Figure 10—
Page 75 and 76:
Fion Zhang/ Charlie Chong
Page 77 and 78:
Page 79 and 80:
4.6 Design and Construction Standar
Page 81 and 82:
Page 83 and 84:
The ASME BPVC lists materials that
Page 85 and 86:
A pressure vessel should be maintai
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Reasons for Inspection 5.1 General
Page 93 and 94:
5.2 Safety One of the primary reaso
Page 95 and 96:
Internal company procedures regardi
Page 97 and 98:
Inspection Plans 6.1 General 6.2 In
Page 99 and 100:
f. Safe accessibility of equipment
Page 101 and 102:
6.2 Inspection for Specific Types o
Page 103 and 104:
Understanding factors and condition
Page 105 and 106:
Visual checks of the external parts
Page 107 and 108:
Non- E&P Vessel External Inspection
Page 109 and 110:
7 Frequency and Extent of Inspectio
Page 111 and 112:
7.1 General The frequency with whic
Page 113 and 114:
7.2 Opportunities for Inspection. T
Page 115 and 116:
d) An occasional check of the opera
Page 117 and 118:
8 Safety Precautions and Preparator
Page 119 and 120:
8.1 Safety Precautions Safety preca
Page 121 and 122:
8.1.1 Precautions Regarding the Use
Page 123 and 124:
Page 125 and 126:
n) tube gauges (inside diameter); o
Page 127 and 128:
p) thermocouples; q) metal sample-c
Page 129 and 130:
9 Inspection Methods and Limitation
Page 131 and 132:
9.1 General Before starting the ins
Page 133 and 134:
Where operating deposits such as co
Page 135 and 136:
API 510 allows a statistical treatm
Page 137 and 138:
When on-stream inspection to be con
Page 139 and 140:
API 510 permits an on-stream inspec
Page 141 and 142:
9.2.2 Limits of Thickness The limit
Page 143 and 144:
Most vessels are built with greater
Page 145 and 146:
In the case of exchangers, minimum
Page 147 and 148:
9.3 External Inspection 9.3.1 Gener
Page 149 and 150:
9.3.3 Foundations and Supports Foun
Page 151 and 152:
Fion Zhang/ Charlie Chong Excessive
Page 153 and 154:
Some settling is expected in any fo
Page 155 and 156:
Page 157 and 158:
9.3.5 Concrete Supports Inspection
Page 159 and 160:
9.3.6 Steel Supports Steel supports
Page 161 and 162:
If supporting skirts are insulated,
Page 163 and 164:
9.3.7 Rivets Although uncommon, riv
Page 165 and 166:
The cable should be inspected for c
Page 167 and 168:
Wall thickness of nozzles should be
Page 169 and 170:
Page 171 and 172:
Test the system to see that the res
Page 173 and 174:
9.3.12 Protective Coatings and Insu
Page 175 and 176:
Inspection for CUI should be consid
Page 177 and 178:
Fion Zhang/ Charlie Chong Neutron b
Page 179 and 180:
9.3.13 External Metal Surfaces The
Page 181 and 182:
9.3.14 External Evidence of Corrosi
Page 183 and 184:
Vessels that are partially or compl
Page 185 and 186:
Buckles and bulges will normally be
Page 187 and 188:
API510 3.59 temper embrittlement: T
Page 189 and 190:
API571 SECTION 4.0 GENERAL DAMAGE M
Page 191 and 192:
Brittle Fracture Below DTBTT C, C-
Page 193 and 194:
9.4 Internal Inspection 9.4.1 Gener
Page 195 and 196:
9.4.2 Surface Preparation The degre
Page 197 and 198:
9.4.3 Preliminary Visual Inspection
Page 199 and 200:
Fractionation and distillation towe
Page 201 and 202:
Figure 16—Corrosion in Channel Fi
Page 203 and 204:
9.4.4 Inspection of Degradation 9.4
Page 205 and 206:
9.4.4.1 Thinning and Pitting Thickn
Page 207 and 208:
Fion Zhang/ Charlie Chong 9.4.4.2 C
Page 209 and 210:
Vessels containing amines (absorber
Page 211 and 212:
9.4.4.3 Erosion Erosion usually dif
Page 213 and 214:
9.4.4.4 Blistering Areas directly a
Page 215 and 216:
Figure 19 - Self-vented Hydrogen Bl
Page 217 and 218:
Page 219 and 220:
9.4.5 Inspection of Components 9.4.
Page 221 and 222:
9.4.5.2 Trays The general condition
Page 223 and 224:
Fion Zhang/ Charlie Chong Figure 21
Page 225 and 226:
9.4.5.5 Linings Heavy-wall hydropro
Page 227 and 228:
9.4.6 Inspection of Nozzles When ac
Page 229 and 230:
Small 1 in. × 2 in. (2.5 cm × 5.0
Page 231 and 232:
Bulges and buckling often occur in
Page 233 and 234:
Where a lining leaks, it should be
Page 235 and 236:
9.4.8 Inspection of Nonmetallic Lin
Page 237 and 238:
Page 239 and 240:
Considerable care should be exercis
Page 241 and 242:
Some refractory-tile linings are hu
Page 243 and 244:
Refractory linings may spall or cra
Page 245 and 246:
9.5 Special Methods of Detecting Me
Page 247 and 248:
Etching of small areas may sometime
Page 249 and 250:
Fion Zhang/ Charlie Chong Sensitize
Page 251 and 252:
9.7 Testing Fion Zhang/ Charlie Cho
Page 253 and 254:
9.7.2 Pressure and Vacuum Testing W
Page 255 and 256:
Pressure testing consists of fillin
Page 257 and 258:
When testing pneumatically, a UT le
Page 259 and 260:
When conducting hydrostatic or pneu
Page 261 and 262:
10ºF / 30ºF / 120ºF Fion Zhang/
Page 263 and 264:
This test will not normally disting
Page 265 and 266:
Page 267 and 268:
• Stationary Heat Exchanger with
Page 269 and 270:
• AKT Type Heat Exchanger • Hor
Page 271 and 272:
Page 273 and 274:
Frequently, a bundle will be tested
Page 275 and 276:
When water is used to conduct a pre
Page 277 and 278:
10 Condition Assessment and Repair
Page 279 and 280:
10.2 Visual Inspection A visual ins
Page 281 and 282:
Degradation may be determined to be
Page 283 and 284:
10.4 Remaining Life Once the vessel
Page 285 and 286:
10.5 Methods of Repair Although rep
Page 287 and 288:
The defects requiring repair and th
Page 289 and 290:
10.5.1 Welding Repairs 10.5.1.1 Gen
Page 291 and 292:
If the remaining metal, after defec
Page 293 and 294:
10.6 Repair of Supporting Vessel Eq
Page 295 and 296:
11 Records and Reports 11.1 Records
Page 297 and 298:
Field notes consist of notes and me
Page 299 and 300:
These reports should include; • t
Page 301 and 302:
Annex B (informative) Towers Fion Z
Page 303 and 304:
Fractionating column Fion Zhang/ Ch
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Sieve trays Sieve trays are made fr
Page 315 and 316:
One piece valve; This is the most c
Page 317 and 318:
Fion Zhang/ Charlie Chong One piece
Page 319 and 320:
http://seperationtechnology.com/dis
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331:
show all

Inspection Practices for Pressure Vessels

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?