Graphitization - Study guides, Class notes & Summaries

In severe refinery services which type of pipe is normally used? - seamless Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? - longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service. - 10% for welded pipe, the normal thickness of under-tolerance is? - .010 or 10 mils when qualifying a weld procedure the esential variables must: - be recorded on both the WPS & PQR ...

oxidation - ANSWER-loss of electrons, positive charge atoms (anode) reduction - ANSWER-gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER-uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/b...

API 570 Study Guide (Full) Exam Questions and Answers 100% Pass Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? - Answer- longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service? - Answer- 10% for welded pipe, the normal thickness of under-tolerance is? - Answer- .010 or 10 mils The corrosiveness of soils can be determined by measuring the soils: - Answer- Resistivity ...

1. oxidation: loss of electrons, positive charge atoms (anode) 2. reduction: gain of electrons, negative charged atoms (cathode) 3. forms of corrosion: uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/bicarbonates) 4...

oxidation - loss of electrons, positive charge atoms (anode) reduction - gain of electrons, negative charged atoms (cathode) forms of corrosion - uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/bicarbonates)

API 570 practice test 100% Solved 2024 In severe refinery services which type of pipe is normally used? - Answer- seamless Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? - Answer- longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service. - Answer- 10% for welded pipe, the normal thickness of under-tolerance is? - Answer- .010 or 10 mils when qualifying a weld procedure ...

API 570 Exam Questions With 100% Correct Answers. What does the 570 cover? - answerAlteration, Inspection, Rating, Repair of metallic and FRP in service piping 570 shall not substitute what or conflict with what? - answerShall not substitute original construction requirements nor conflict with any prevailing regulatory requirements Define non metallics, as used in 570 - answerFRP(fiberglass reinforced plastic) GRP(glass reinforced plastic) Does the 570 cover cryogenic fluids such as LN2,...

Summary NACE CP2 Study Guide Complete Solutions Verified oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hyd...

Types of cast irons: - Answer Gray Iron Malleable Iron White Iron Ductile Iron Alloy Irons Malleable iron is ____ - Answer heat treated for ductility White iron is ____ - Answer hard and wear resistant Ductile iron has ____ - Answer some ductility as cast Cast irons are located where on the iron-iron carbide diagram? - Answer Above 2% C Casting methods: - Answer sand casting permanent mold die casting investment casting centrifugal casting shell molding Gray iron can b...

oxidation - ANSWER-loss of electrons, positive charge atoms (anode) reduction - ANSWER-gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER-uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/b...