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- In: Training | On: Sep 30, 2020
Acronym Soup
SOME NOT-SO-FAMILIAR ACRONYMS
If you’re not that familiar with codes such as API and ASME you may be puzzled by some of the acronyms they use.
Here’s a handy list from the WILKINSON COUTTS Plant Inspection Guide.
| ACoP | Approved code of practice |
| AI | Authorised inspector (ASME) |
| AST | Atmospheric storage tank |
| AUT | Automated ultrasonic testing |
| CDTP | Cold differential test pressure |
| CDW | Controlled-deposition welding |
| CML | Condition measuring location |
| COF | Consequence of failure |
| CP | Competent Person/Cathodic protection |
| CRA | Corrosion risk assessment |
| CTP | Critical thickness profile reading |
| CUI | Corrosion under insulation |
| DAC | Defect acceptance criteria |
| DM | Damage mechanism |
| DP | Design pressure |
| ECT | Eddy current testing |
| EIC | Environmentally induced cracking |
| FCA | Anticipated future material loss |
| FCAW | Flux-cored arc welding |
| FFS | Fitness for service |
| FOS | Factor of safety |
| FRP | Fibre-reinforced plastic |
| GMAW | Gas metal arc welding |
| GML | General metal loss |
| GTAW | Gas tungsten arc welding |
| HAZ | Heat affected zone |
| HIC | Hydrogen induced cracking |
| HSE | Health and safety executive (UK) |
| HTHA | High temperature hydrogen attack |
| ID | Inside diameter |
| IOW | Integrity operating window |
| ITP | Inspection and test plan |
| LDC | Limit load of damaged component |
| LOWT | Loss of wall thickness |
| LT | Long term |
| LTA | Locally thinned area |
| LUC | Limit load of undamaged component |
| MAOP | Maximum allowable operating pressure |
| MAWP | Maximum allowable working pressure |
| MDMT | Minimum design metal temperature |
| MDR | Manufacturers data report |
| MFL | Magnetic flux leakage |
| MMS | Maintenance management system |
| MOC | Management of change |
| MRT | Minimum required thickness |
| MTR | Material test report |
| NACE | National association of corrosion engineers |
| NDE | Non-destructive examination |
| NII | Non-intrusive inspection |
| NPS | Nominal pipe size |
| OD | Outside diameter |
| PCC | Post construction code |
| PI | Pipeline inspector |
| PID | Process and instrumentation diagram |
| PMI | Positive material identification |
| POD | Probability of detection |
| POF | Probability of failure |
| PQR | Procedure qualification record |
| PRD | Pressure relieving device |
| PRV | Pressure relief valve |
| PSSR | Pressure system safety regulations |
| PT/MT | Penetrant testing/magnetic testing |
| PTR | Point thickness reading |
| PTW | Permit to work |
| PWHT | Post weld heat treatment |
| QA | Quality assurance |
| QC | Quality control |
| RBI | Risk-based inspection |
| RCM | Reliability centred maintenance |
| RL | Remnant life |
| RP | Recommended practice |
| RPB | Release prevention barrier |
| RPS | Release prevention system |
| RSF | Remaining strength factor |
| RT | Radiographic testing |
| SAI | Soil-air interface |
| SAW | Submerged arc welding |
| SBP | Small bore pipework |
| SCC | Stress corrosion cracking |
| SI | System International (of units) |
| SI | Source inspector |
| SMAW | Shielded metal arc welding |
| SMYS | Specified minimum yield strength |
| SOHIC | Stress oriented hydrogen induced cracking |
| SPV | Simple pressure vessel |
| TML | Thickness measurement location |
| TOFD | Time of flight diffraction |
| TSS | Total suspended solids |
| USCS | United States customary system (of units) |
| UT | Ultrasonic testing |
| UTS | Ultimate tensile strength |
| VT | Visual testing |
| WPQ | Welder performance qualification |
| WPS | Weld procedure specification |
| WSE | Written scheme of examination |
