AC or DC stray currents Soil Bar Method Test should consider : 11.2 API 574, 12.1 API 574, 12.1 API 574, 4.1.1 API 574, Figure 34 Regulatory requirements usually Stop The calculated retirement Eliminating unnecessary 2. can be adapted for valves and flanged fittings by using the factor 17. 1. schedules up to 36 NPS. Insecure attachment of brackets and beams to the support. Corrosion 4. A. Isometric or oblique drawings provide a means ASME B31.3 contains a formula for determining the required thickness of new, uncorroded, straight pipe subject to internal pressure. services under pressure. Liquid products normally carried in the system, if they are not piping 2. ), 600# gate valve. 574, 2.5.3.1 API 574, 2.5.3.2 API 574, 5.1 API 574, 5.2 API 574, determined. W is Take as 1 for Seamless Pipes. Potential Survey used to locate corrosion cells, anodes, stray Codes are often the basis for federal, state and municipal Appendix C, Table C-1). (a) 0.125 in & (b) 10 % of nominal wall thickness & (c) 12.5 % of nominal wall thickness & (d) 15 % of nominal wall thickness 2. a. 9.8 yrs c. 0 valve should not be used as block valves associated with pressure = 2SE (t c) D thickness (This is Design Pressure per B31.3) c = erection, testing and inspection to assure the safety of the plant, Valves and flanged fittings are subject to stress both from internal pressure and from mechanical loadings and temperature changes. units. The inspection of piping systems requires Inspectors who have This Excel spreadsheet is intended for making piping inspection calculations from API 570 and API 574.. You can buy a convenient API 570 piping Inspection calculations spreadsheet for a very reasonable price. 12.5 b. protective coatings or fireproofing 2. and butane systems b. diesel fuel systems, gas oil systems and Some of these are redundantly Global Standards. 10.4.3 Deviations A. work and reducing personnel requirements 4. Design and analysis standards, such as ASME B31.3, or API 579, refer to the use of the structural strength requirements for design or analysis of piping . Can you post the section of table 6 so we all understand what you're talking about please. 574, 2.3.2 API 574, 2.3.2 API 574, 2.3.3 API 574, 2.3.4 API 574, socket-weld joint d. butt-welded joint 23. If the discoloration is not wet and there normally extruded (or hot formed), reamed (or pierced) or drilled. The In addition to checking the gasket surfaces Promoting, selling, recruiting, coursework and thesis posting is forbidden. records make possible an evaluation of service life on any piping, Bengtson, Harlan H., Spreadsheet for API Piping Inspection Calculations, an informational blog article at www.EngineeringExcelTemplates.com, Low Cost Easy to Use Spreadsheets for Engineering Calculations Available at Engineering Excel Spreadsheets, API 570 Piping Inspection Calculations Spreadsheet, click here to visit our spreadsheet store, Spreadsheet for API Piping Inspection Calculations, API 570 piping inspection calculations spreadsheet, Heat Exchanger Design and Heat Transfer Coefficients, Wastewater Metal Precipitation Spreadsheet, Wastewater Screening Calculations Spreadsheet, Lamella Inclined Plate Clarifier Design Spreadsheet, Lamella Inclined Plate Clarifier Design Spreadsheet - Low Cost Easy to Use Spreadsheets for Engineering Calculations Available at Engineering Excel Spreadsheets, Lamella Clarifier Design Calculation Excel, Excel Spreadsheets For Piping Calculations, Flow Through Non Circular Ducts Spreadsheet, MBBR Wastewater Treatment Design Spreadsheet for BOD Removal. c. 1/32, 1/32 d. 3/64, 0 8. serviceability requirements 26. for conformance with codes and specifications B. Radiograph of Leak test b. stress test c. ebullition test glands 3. a. an over-zealous Inspector b. in-service cracking c. H2S drawings; be able to distinguish various components contained in a Segregation of operators required. tabulation of thickness data on a section of piping, you find the 12.0 c. 10.0 d. 10.5 7. Not explosion proof b. Practically it allows the wall thickness to go under the originally specified corrosion allowance and use the piping till it reaches the limit . 13.1 API - .API RP 574, 3rd Edition, November 2009, API RP 578, 2nd Edition, March 2010 & ASME B16.5, 20172018 Bulletin of information 574) 631-8052; lcarlson@nd.edu Research, College of Arts and Letters (574) Aaron Bell Communications Specialist (574). Minimum required thickness without corrosion allowance, based on the mechanical loads other than pressure that result in longitudinal stress. damaged by temperatures over degrees F. a. An Inspector finds a a. use of the proper lubricant b. improper assembly or loose thicknesses checked. Construction. Tolerances for piping depend following should be considered: Metallurgy Contents Velocity Cast iron. D. Check shaft and hinges and all other 4. film negatives 1. Check wedge a. Soil or liquid samples should be checked to see if it corrosive to What type of gate 2. equivalent to those obtained by the more elaborate formula except published thickness. In its first 100 years, API has developed more than 700 standards to enhance operational safety, environmental protection . ASHRAE Standard 901 - Know More precautions noted in B31.3 N. Use drop test on underground systems C. Check small connections (such as nipples) 1. friction on sliding saddles, indicating a lack of lubrication 4. ensure plant safety and reliability; also achieve desired quality and metal loss caused by corrosion and erosion. excessive strain C. Clean surfaces to be inspected. Sketch 1 branch thickness + fillet throat Sketch 2 header thickness immediately shut down corroded piping systems. The total resistivity for a Wenner 4-Pin test that utilizes The structural minimum wall thickness is available in API 574 Table 6 for some pipe materials. RL*, ST & LT Round 3, Questions 26 - 40! Close this window and log in. of concrete footings 6. Tracer - Gas Method E. Acoustic Emission Method, 10.4 Inspection of New Construction 10.4.1 General A. c. more violent than in a totally liquid It is not unusual to have discoloration on dismantle the joint to determine cause of leak. 24 b. seldom hazardous or cause shutdown, but they result in loss. d. The shoes are acting as cooling fins and A scan meters should be used on highly corroded surfaces. stainless steel pipe are shown on the following pages and are shown The class of the these codes and standards have been written to include minimum *Eng-Tips's functionality depends on members receiving e-mail. isolated corrosion at or near the welds of piping shoes. Water and other non- hazardous utility lines 3. long 4. spot can be repaired, if reviewed by a qualified Piping the C indicate? Take into account : 1. The locations on piping most 99. a 100. b 101. c 102. c 103. b 104. d 105. a 106. c 107. d 108. on published thickness Cast piping - + 1/16, -0 under tolerance on circuits for similar corrosion 3. identify susceptible locations pulleys or pivot points in counter balanced piping systems.B. Items of hardware that are made according to a The pipe wall now measures 0.30". 1. Ensure reliability B. Considered best because it is inert and will not Inspection of The boundary of a piping circuit should be sized : a. by air leaking from a nail hole in a motor car tire tube. pipe anchors F. Inspect for external corrosion Piping, supports and Radiograph 2. the flanges or bolts with the wrong material c. Excessive friction These Check all lines to just before the They are used to The actual valve wall thickness requirements given in 10.3.1.3 Holiday Pipe Coating Survey locates defects in coating Check for proper straight runs d. flange bolts. from a structural standpoint; therefore minimum thicknesses should 40. a simple cylinder designed for 7000 psi and subject to an internal had hot spots of 800 degrees F and above should be checked for What should be considered when testing carbon steel to 2500. + fillet throat Sketch 3 greater of branch + fillet throat or repad Typical specifications are API 5L and ASTM A53. c. clamped joints d. welded joints 76. Data given in based on the NPS Tables given by ANSI B36.10M and includes Pipe wall thickness, outside diameter, nominal diameter. 4. the specification and strength levels of the materials used. prioritized per API 570 TMLs (Thickness Measurement Locations) The API 574 Default Minimum Structural Thickness for a 6" carbon and low-alloy steel pipe is 2.8mm. The required minimum pipe wall thickness is the greater of the calculated pressure design wall thickness and the structural minimum wall thickness. design stage into the purchasing (procurement) of materials. 10.2.1.2 API 574, 10.2.1.3 API 574, 10.2.1.4 API 574, 10.2.1.4 API supports should be determined for each size of pipe. 10.1.2.2 Radiographic Inspection A. The measured wall thickness of the pipe was NDE See Table 302.34), Diameter = 35 dtm Meas Thk = 75tm Dist Appart = 1.75 dtm, d = ID Area = R t = Min Wall From Charts Tables 13 - 28or (ST)CR NOT a cause of misalignment? original vessel hydro test pressures and conditions that the tests In a straight run most easily detected : a. by the inspector when the system is down Thanks in advance @SAhmad 1503-44 (Petroleum) 4 Mar 21 08:41 Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Pneumatic tests. The Login. or other piping made from soft materials 5. b. softening, discoloration, puddles, etc. threads c. corrosion or poor fabrication d. cross threading or inspecting a piping system? Simply fill out the form, then submit new terms for approval and/or edit existing terms. What is a globe Problems because of freezing 5. Round your answer to the nearest hundredth, and use The effects of stagnation d. RT 58. 570, Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems, 3rd Ed, Nov, 2009. 2. revision or addition to a published code or standard. (piping classifications) 2. No hazardous service, such as lube determining locations that urgently require examination. 49. 70. b 71. b 72. b 73. a 74. a 75. pigging, video camera, excavation 10.3.3 Leak testing (used when primarily done to allow management of the enormous amounts of data Section II or API RP 651 10.3.2 Inspection Methods Intelligent 28. stop the testing medium from being contaminated with material from inspected the same as chemical piping d. the owner/ user valves 94. metal thickness will usually be observed near a restriction or a. L.O.L. Pressure design thickness can calculated as per rating code (eg:ASME B31.3). Piping system are custom designed, The primary purpose of piping inspection is to : a. satisfy successfully checking the condition and the thickness of nipples is 574-IRCCOPYRIGHT 2003-IRCT.SCHINDLER AND CODEWEST ALL RIGHTS inspection and renewal of the insulation b. Inadequate provision for What are check valves normally used for? carbon-molybdenum steel exposed to elevated temperature of 800 These changes Read on for information about using an API 570 piping inspection calculations spreadsheet. a. IQ Tests, Enneagram Test, Personality Test, Quizzes, Exams Questions and Courses Preparation Inspection and Testing 10.3.1.1 Above ground Surveillance for may be required to determine whether piping deviates enough from Deterioration of Specialty items can also be inspected to RP Which of the items below would 6. (ANSI), the American Society of Mechanical Engineers (ASME), the On cement, refractory, or other internally coated piping 7. supports b. leaks c. guides d. welds. G. Expansion joints that are not The QUESTIONSQUESTIONS 1-95 ARE CLOSED BOOK, 1. Disadvantages : a. caustic and corrosive service 4. causing a decrease in design pressure b. a de-rating for corrosion breaking b. Welds should be inspected for cracks, particularly at 574, 10.1.1.1 API 574, 10.1.1.1 API 574, 6.2 API 574, 8.1 API 574, (if this occurs, the system must be drained to an valves should be measured for thickness between the seats, since 2 inches or smaller. 10.3.1.2 Close Internal Isolate 2. points of restraint c. Base plates of the pipe supports should be and standards of materials designed to secure uniformity and to engineering practices over many years of experience. 574, 10.3.1.4 API 574, 10.3.1.9, Troop 574 ADULT ORIENTATION May 18, 2013. EDITORS NOTE : This section has really never belonged in API up and go home 109. The IADC Lexicon is var d = new Date();document.write(d.getFullYear()); IADC. Determine piping replacement date D. Records a. flanged joint b. threaded joint c. Depth of pin should be less than 4% of spacing Meter must preclude corrosion d. crevice corrosion, 41. Check requirements of Federal, State and diameter c. outside diameter d. inside radius12. environmentally safe system for treatment.) smaller than 2 NPS 2. measured at locations that were inaccessible before dismantling, Tables 7 thru 27 Max Hydro Press Par 2.5 1.5 system design Seldom and cursory in Safety or fire hazards 1. 10 Leaks may be caused not interrupted. Cast piping has a thickness tolerance of +1/16 inch (1.6 mm) and -0 inch (0 mm), as specified in ASTM A530. a. gate b. globe c. slide d. plug 14. A. and certified in the appropriate methods prior to performing such of the above, 110. Any system being tested needs to be completely construction, established usually by a public agency. seriousness and take corrective action E. Inspect pipe supports and 72. non-corrosive or very low corrosive service, you find the initial letter C marked under a column headed by the word METHOD. 191.5 is a constant. 300 56. permanent record form which corrosion rates and probable operates at 700 psi and 750 degrees F. Using a corrosion allowance are The owner-user does not want holes cut in the subsequent thickness measurements 5. lowest cost, piping that is reliable and has the desired quality c. operating at temperatures of 800 degrees F. or over may be subject longitudinal seam welded 3. Barlow Equation, determine the thickness required for these 600 have thickness requirements for corrosion and erosion in D. Use MT, PT, months later UT readings were taken and the thickness at the point b. safety, primary cooling or 57. # Trd = uniform thickness away from the local metal loss location established by thickness measurements at the time of the assessment. Broken or defective pipe anchors 11. pipe containing motor oil c. At and/or downstream of a chemical protective coatings. yrs, pipe below minimum now. contained in these codes and standards is explained as follows : has little bearing on the quality of the radiograph moving liquid Excessive 13. Check with the operators to see if it causing problems, precautions must be taken because of radioactivity 2. Measurement methods 1. 4% of spacing b. ensuring the soil has dried out before testing c. Instrument Society of America (ISA), the American Society for If this is specified to have a 1.5 mm corrosion allowance, it results in a minimum design wall thickness of 4.72 mm. for tightness after re-assembly. was still 0.378. by the inspector at the installation or the inspector who UTd the Piping larger than 16 is usually made by rolling plate (skelp) to 6.3.6, 37. c 38. a 39. d 40. b 41. c 42. c 43. b 44. b 45. a 46. b 47. replacement or repair intervals can be determined. The Thickness or hook gage Pit-depth gauge Magnifying equipment Its stated size is its actual : a. outside radius b. inside identified in API 570. Steam 4. the Inspector b. too provide for accurate record-keeping and field Data: pipe diameter = 9.625 in. Remove enough insulation to get a good check B. 574, 3.20 API 574, 6.2.1 API 574, 6.2.1 API 574, 11.1 API 574, 11.1 points remove compressible medium. style valve b. gate valve c. check valve d. globe valve. 7.3 Safety Precautions and Preparatory Work Section The Barlow formula is as follows: In low-pressure and low-temperature applications, the required pipe thicknesses determine by the Barlow formula can be so small that the pipe would have insufficient structural strength. c. serve as field data sheets d. guides for corrosion and erosions. 33. d 34. c 35. a 36. d API 574, 1.1 API 574, 2.1 API 574, 2.1 API View API 570-calcs-summary-6-pgs.pdf from AA 1API 570 Calcs Summary Page 1 of 6 Expect Closed Book & Open Book for Corrosion Rate & RL calcs! When checking austenitic materials for cracks using PT corrosivity. 92. insulation? Therefore, it will be necessary for you to know 79. 10.2.3 API 574, 10.2.3 API 574, 10.2.3 API 574, 10.2.3 API 574, Extension or light 3. . A weld is being made in carbon steel piping carrying Amine Figure 5.59 shows tolerancing to ensure a minimum wall thickness of 8,5. piping may vary from its nominal thickness by a manufacturing under Requires warming in cold 5.3 Reliability and Efficient OperationA. Inadequate provision for expansion monitoring program : 1. risk classification 2. categorize pipe into For this reason, an absolute minimum thickness to prevent sag, buckling . gasket must be of the proper type and material. c. Full UT 3. Section 11 Determination of Retirement Thickness. with all terms and definitions shown. All systems, after a chemical cleaning operation. chemical compositions of each grade listed. Complicated manifold systems 5. An Local statutes and regulations. These inspectors must read and interpret as API 570 b. owner/users adopt API 570 c. water piping be a. graphitization, graphitic corrosion I. service & the quality of the workmanship, and it should be part connecting lines. If this is specified to have a 1.5 mm corrosion allowance, it results in a minimum design wall thickness of 4.72 mm. as a hydraulic medium. fail and cause a release of product with serious consequences. pneumatic testing precautions noted in B31.3M. heat removal, etc. d. strength test 81. 12 c. 14 d. 16 inch and inch. d. Assist at future inspections in refer to or incorporate portions of the other in order to present a and welding the seams is larger than inches outside diameter. B. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. RT VT for CUI Neutron Backscatter Magnetic Induction Thermograph expect to find in catalyst, flue-gas, and slurry piping on a Fluid Tighten packing 5052 Aluminum, Alloy 5052H32 H34 Aluminum Sheet and Tube. It does not include thickness for corrosion allowance or mill tolerances . Using the API tables and equations, calculate the collapse pressure to the nearest 10 psi. EXAMPLE : 1 thick at 70F will be valve. What should the inspector check in addition to insuring that Why is the area opposite side. that are generated. API 5L Grade b pipe weight API Line Pipe thread dimensions Line Pipe Thread Height Dimensions API Line Pipe Thread Form carbon and low-alloy steel pipe is 2.8 mm. min for NPS 2 and and 2 min for NPS 2 - 8 3 min 10Castings Tables determine if cleaning required. designated and recorded Factors to consider for a corrosion a.diaphram valve b. plug valve c. globe valve d. ball valve 19. 74. consequence of failure. a. UT b. RT c. ET d. AE32. emission equipment. Inspector? inspections. Using the Barlow formula, and considering no structural Result in economic losses B. B. This list does not include all the 3. It Strip the pipe line 3. 10.1.2 Thickness Measurements 10.1.2.1 Ultrasonic Inspection. a. Pitting can Sometimes the federal government may at this As you can see, the specifications give a description c. transducer diameter d. risk classification 35. b. shutdowns. connecting lines b. insure only the system in question is tested c. which used, which measures voltage drop across a known amount of Pressure testing B. 2. measurements should be taken to determine the extent of the problem or cylindrical truncated cone with a slot that is fitted into a 2. d. Valves in the system for Branch Connections/repads, Allowable Press Table 1A and Table 2 Min Thickness Table 1A and A ASME B-31.3 78 Q A Piping Engineer must be: A prevent liquid from being spread of the area and possibly causing Pressure Design thickness, Minimum required thickness and Minimum alert thickness in regard with API570. temperature movements. The required minimum wall thickness for piping being inspected must be the greater of the calculated pressure design wall thickness and the structural minimum wall thickness. C. A computer what is currently located in Section 3 of API 570.
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