COMPLETE REVISION PIP PNC00002 September 2004 Abbreviated Piping Terms and Acronyms

Abbreviated Piping Terms and Acronyms

Abbreviation Description Abbreviation Description AARH Arithmetic Average Roughness

Height EA Each

AL Aluminum EB Extended Bonnet ATM Atmosphere EC Eddy Current Testing (Examination) AVG Average ECC Eccentric B&S Bell & Spigot EFW Electric Fusion Welded BB Bolted Bonnet EL Elevation BBE Bevel Both Ends ELL Elbow BC Bolt Circle ELLIP Elliptical BD Blow Down EOL Elbolet BE Beveled End EPDM Ethylene-Propylene-Diene

Terpolymer / EP Rubber BF Blind Flange EQ Equal BL Battery Limit ERW Electric Resistance Welded BLD Blind F Fahrenheit BLE Bevel Large End F-F Face-to-Face BOE Bevel One End FBE Flange Both Ends BOM Bill of Material FCAW Flux Cored Arc Welding BOP Bottom of Pipe FEP Perfluoro (Ethylene-Propylene)

Copolymer BR Bronze FF Flat Face BSE Bevel Small End FFW Field Fit Weld BTM Bottom FIG Figure BW Butt Weld FIN Finish C Centigrade; Celsius FLE Flange Large End C-C Center to Center FLEX Flexible CA Corrosion Allowance FLG Flange CALC Calculated FMU Fitting Make Up CI Cast Iron FNPT Female National (Taper) Pipe Threads CL Centerline FOB Flat on Bottom CM Centimeter FOE Flange One End CONC Concentric FOF Face of Flange CONN Connection FOT Flat on Top CPLG Coupling FP Full Port CPVC Chlorinated Polyvinyl Chloride FRP Fiberglass Reinforced Plastic CR Chromium FS Forged Steel CS Carbon Steel FSE Flange Small End CU Copper FT Foot; Feet CWO Chain Wheel Operator FTG Fitting CWP Cold Working Pressure FV Full Vacuum DEG Degree FW Field Weld D/P Differential Pressure G Gram DI Ductile Iron GA Gauge DIA Diameter GALV Galvanized DIM Dimension GBE Groove Both Ends DIN Deutsche Indistrie Normen GE Groove End DN Diameter Nominal (Metric) GJ Ground Joint DP Design Pressure GLE Groove Large End DRN Drain GMAW Gas Metal Arc Welding DT Design Temperature GO Gear Operator DWG Drawing GOE Groove One End

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PIP PNC00002 COMPLETE REVISION Abbreviated Piping Terms and Acronyms September 2004

Abbreviated Piping Terms and Acronyms (continued)

Abbreviation Description Abbreviation Description GR Grade MFG Manufacturer GRND Ground(ed) MI Malleable Iron GRP Glass Reinforced Plastic MIN Minimum GSE Groove Small End MISC Miscellaneous GSKT Gasket MJ Mechanical Joint GTAW Gas Tungsten Arc Welding MNPT Male National (Taper) Pipe Threads H Horizontal MO Molybdenum HAZ Heat Affected Zone MT Magnetic Particle Testing (Exam) HB Hardness Brinell Scale MTL Material HD Head MTO Material Take Off HDPE High Density Polyethylene MTR Material Test Report HB Hardness Brinell Scale N/A Not Applicable HDR Header NBR Nitrile-Butadiene/Nitrile or BunaN

Rubber HEX Hexagonal NI Nickel HF Hard Faced NIPP Nipple HK Hardness Knoop Scale NPS Nominal Pipe Size HP High Pressure NPT National (Taper) Pipe Thread HPT High Point NRS Non-Rising Stern HR15N Hardness Rockwell 15N Scale NTS Not to Scale HRB Hardness Rockwell B Scale OD Outside Diameter HRC Hardness Rockwell C Scale ORIF Orifice HT Heat Treatment OS&Y Outside Screw & Yoke HV Hardness Vickers Scale OSBL Outside Battery Limits HW Handwheel P&ID Piping and Instrumentation Diagram IBBM Iron Body Bronze Mounted P-T Pressure Temperature ID Inside Diameter PARA Paragraph IN Inch PAW Plasma Arc Welding INS Insulation PBE Plain Both Ends ISBL Inside Battery Limits PE Polyethylene; Plain End ISO Isometric Drawing PFA Perfluoro (Alkoxyalkane) Copolymer ISRS Inside Screw Rising Stem PIV Post Indicator Valve ITCS Impact Tested Carbon Steel PL Plate JE Joint Efficiency PLE Plain Large End KCS Killed Carbon Steel PO Pushed On KG Kilogram POE Plain One End KPA Kilopascals

(Pressure = psig x 6.895) POS Point of Support

LDPE Low Density Polyethylene PP Polypropylene LJ Lap Joint PPB Parts per Billion LP Low Pressure PPM Parts per Million LPG Liquefied Petroleum Gas PRESS Pressure LPT Low Point PS Pipe Support LR Long Radius PSE Plain Small End LTE Long Tangent Elbow PSI Pounds per Square Inch LWN Long Welding Neck PSIA Pounds per Square Inch Absolute M Meter PSIG Pounds per Square Inch Gauge MxF Male by Female PT Liquid Penetrant Testing (Exam) MAWP Maximum Allowable Working

Pressure PTFE Polytetrafluoroethylene

MAX Maximum PVC Polyvinyl Chloride MDMT Minimum Design Metal

Temperature PVDC Polyvinylidene Chloride

Page 4 of 5 Process Industry Practices

COMPLETE REVISION PIP PNC00002 September 2004 Abbreviated Piping Terms and Acronyms

Abbreviated Piping Terms and Acronyms (continued)

Abbreviation Description Abbreviation Description PVDF Polyvinylidene Fluoride T&C Threaded and Coupled PWHT Postweld Heat Treatment T&G Tongue and Groove RA Roughness Average

(Replaced AARH) T-T Tangent-to-Tangent

RAD Radius T/SW Threaded by Socketweld RAT Rating TAN Tangent RED Reducer; Reducing TBE Thread Both Ends REF Reference TEMP Temperature REINF Reinforced TFE Tetrafluoroethylene REPAD Reinforcing Pad THK Thick REQD Required THRD Thread; Threaded REV Revision TI Titanium RF Raised Face TLE Thread Large End RJ Ring Joint TOC Top of Concrete RP Reduced Port TOE Thread One End RPO Restrained Push On TOG Top of Grout RS Rising Stem TOL Thredolet RT Radiographic Testing (Exam) TOP Top of Pipe RTFE Reinforced TFE TOS Top of Steel; Top of Support RTP Reinforced Thermosetting Plastic TSE Thread Small End RTR Reinforced Thermoset Resin TW Thermowell SAW Submerged Arc Welding TYP Typical SCH Schedule UB Union Bonnet SDR Standard Dimensional Ratio UG Underground SG Specific Gravity UNC Unified National Coarse Thread SI Silicon UNF Unified National Fine Thread SMAW Shielded Metal Arc Welding UNS Unified Numbering System SMLS Seamless UT Ultrasonic Testing (Exam) SO Slip On V Vertical SOCW Socket Weld (see SW) V/D Vents and Drains SOL Sockolet VT Visual Testing (Exam) SP-WD Spiral Wound W/ With SPA Spacer W/O Without SPEC Specification WB Welded Bonnet SQ Square WE Weld End SR Short Radius WN Weld Neck SS Stainless Steel WOG Water, Oil, & Gas ST Seat WOL Weldolet STD Standard WP Working Point STL Steel WPS Weld Procedure Specification STM Steam WT Wall Thickness SVC Service WWP Working Water Pressure SW Socket Weld (preferred) XS Extra Strong SWG Swage XXS Double Extra Strong

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