API 570 Pre-course Study Guide Questions and Answers correct

API 570 Pre-course Study Guide Questions and Answers correct API 570 covers inspection, repair, alteration, and re-rating procedures for what type of piping systems? Metallic and fiberglass reinforced plastic piping systems that have been in service Is the use of API 570 limited only to piping systems used in the petroleum and chemical process industries? No Which of the following is an optional fluid service to which API 570 may be applied? Category D fluid services Are all fluid services and classes of piping systems, located within the boundaries of a refinery or chemical plant, subject to the requirements of API 570? No, certain fluid services are optional such as hazardous fluids below the threshold limits, water, steam, condensate, boiler feed water, and Category D fluid services. Which of the following applications is optional for inclusion in API 570? Firewater piping The owner user organization must develop a quality assurance manual or written procedure which shall contain all but which of the following? External auditing requirements for the Quality Control system for pressure relieving devices Who has overall responsibility for compliance with API 570? The owner user of the piping system Who is responsible to the owner for activities involving design, engineering review, rating, analysis, and evaluation of piping systems? The piping engineer The repair organization is responsible for providing materials, equipment, quality control, and workmanship to meet the requirements of ASME B 31.3 False- API 570 not B 31.3 The API 570 inspector is responsible to the owner user for determining that all but which of the following requirements are met? Operation Personnel not designated as inspectors, piping engineers, or repair organizations are responsible for notifying the inspector or piping engineer of any unusual conditions and providing other assistance where appropriate. True In developing an inspection plan, a corrosion specialist should be consulted when piping systems operate at elevated temperatures and for systems that operate below; The ductile to brittle transition temperature The inspection plan shall be developed by: The inspector and or engineer The inspection plan is developed from the analysis of several sources of data. Systems shall be evaluated based on present or possible types of damage mechanisms. The methods and extent of NDE shall be evaluated to assure they can Identify the damage mechanism and the severity of damage Inspection plans shall be reviewed and amended As needed Which of the following is not listed as a minimum content of an inspection plan? The length of time the system will be out of service Identifying the evaluating potential damage mechanisms, current equipment condition, and the effectiveness of past inspections are; Important steps in assessing the probability of piping failure The RBI probability assessment shall be in accordance with: API 580 The consequence of a release is dependent upon: The type and amount of process fluid contained in the equipment Documentation of RBI assessments is essential to clearly define all of the factors contributing to: The probability and consequence of failure When RBI assessments are used to set equipment inspection intervals, the assessment shall be updated After each inspection as defined in API 580 The owner user is preparing a piping system for internal and some external inspections, which of the following is not listed as part of the safety practices? Identifying the remaining piping systems Before starting an inspection what should inspection personnel do? Obtain permission to work in the vicinity from operating personnel You are preparing to conduct an inspection of an in-service piping system. What specific function should you perform? You should familiarize yourself with the previous inspection results Chloride stress corrosion cracking, fatigue, caustic stress corrosion cracking, and sulfide stress cracking are examples of which of the following typical piping damage types and mechanisms? Surface connected cracking Why are injection points of particular concern with regard to inspection activity? Injection points are sometimes subject to accelerated or localized corrosion from normal or abnormal operating conditions What is the recommended minimum upstream limit of an injection point circuit? Twelve inches or three pipe diameters, whichever is greater What is the recommended downstream limit of an injection point circuit? Second change in flow direction past the injection point or 25 feet beyond the first change in flow direction, whichever is less Which of the following is not one of the recommended guidelines used in establishing thickness measurement locations (TMLs) within an injection point circuit? Appropriate locations on the connected vessels When taking thickness measurements, at injection points, what are the preferred methods of obtaining these measurements? Radiography and or ultrasonic Periodically, inspections of an injection point circuit should include more extensive inspection. What are the recommended limits of this extended inspection? Beginning 12 inches upstream of the injection nozzle and continuing for at least ten pipe diameters downstream of the injection point During the external inspection of a piping system, you notice corrosion build up at a pipe support contact point. What action may be necessary? Lifting the pipe off the support may be necessary for thorough inspection Bellows expansion joints should be inspected visually for? Unusual deformations, misalignment, excessive angular rotation, and displacements that may exceed design. During piping and line movement surveillance inspections, branch connections should receive special attention. True Condition Monitoring Locations (CMLs) should be selected based on what two main considerations? The potential for localized corrosion and service specific corrosion May CMLs be reduced or eliminated once they have been established? Yes substantial reductions should include consultation with a corrosion specialist The thinnest reading or an average of several readings in the test point shall be recorded and used to calculate corrosion rates, remaining life, and inspections schedules. True When taking thickness readings on pipe, where should they be taken? Thickness measurements should include each of the four quadrants on the pipe and fittings, with special attention to the inside and outside radius of elbows and tees CMLs should be marked on inspection drawings but not on the piping system. False A complex piping system containing fittings, branches, deadlegs, injection points, and other similar items would cause you to do which of the following? Assign more CMLs Piping systems may require fewer CMLs provided that all but which of the following characteristics are present? Higher potential for CUI CMLs may be eliminated entirely for piping systems when what condition(s) exist? Environmental emergency is extremely low, Non corrosive systems, as demonstrated by history or similar service; and systems not subject to changes that could cause corrosion as demonstrated by history and or periodic reviews What nondestructive method is the most accurate means for obtaining thickness measurements on installed pipe larger than NPS 1? Ultrasonic What technique is preferred for determining areas to be measured for pipe diameters smaller than NPS 1? Radiographic profile When corrosion in a piping system is non uniform or the remaining thickness is approaching retirement thickness, what are the preferred thickness measurements methods to be employed in this case? Radiography or Ultrasonic scanning Ultrasonic measurements taken above_____ °F require the use of instruments, couplants, and procedures that will result in accurate measurements at the higher temperature. 150°F The accuracy of ultrasonic measurements can be influenced by many factors. Which of the following factors should not affect the accuracy of ultrasonic measurements? Thickness between 1/8 and 1/4" Pressure test are not normally conducted as part of a routine inspection. Exceptions to this include: Requirements of the coast guard for over water piping and requirements of local jurisdictions, after welded alterations, buried piping or when specified by the inspector or piping engineer. If a pressure test is called for, by the inspector, piping engineer, jurisdictional authority, or for over-water piping, what requirements must be adhered to? The requirements of ASME B31.3 The test fluid should be water unless: There is the possibility of damage due to freezing or other adverse effects of water on the piping system or the process(e.g process incompatibility with water) or unless the test water will become contaminated and its disposal will present environmental problems. Flammable liquid may be used to conduct the pressure test provided the flash point of the liquid is at least _____°F (____°C) or greater/ 120°F (49°C) Piping fabricated of 300 series stainless steel, or containing components of this material, should be hydro tested with a solution made up of potable water, de-ionized-mineralized water, or steam condensate. If potable water is not available, or drying is not possible, then water having a very low chloride level and which of the following may be considered to reduce the risk of pitting and microbiologically induced corrosion? Water with a pH greater than 10 and inhibitor When the pressure test requires the test pressure to be held for any length of time, what precautions should be taken? If the test fluid is subject to thermal expansion, overpressure preventative precautions must be taken. What precautions are required when a pneumatic pressure test is applied as an alternative to liquid pressure testing? The inspection precautions contained in ASME B31.3 shall be applied When the test pressure will exceed the setting of the pressure relieving device, the set pressure adjusting screw can be used to increase the set pressure of the pressure relieving device to prevent it lifting during the pressure test. False- The pressure relieving device should be removed or blanked for the duration of the test. A number of brittle fracture failures have occurred to materials exposed to temperatures below their transition temperatures and to pressures greater than: 25% or the required hydrostatic test pressure or 8ksi of stress which ever is less. Special attention should be given to low-alloy steels, especially ________ because they may be prone to temper embrittlement. 2-1/4CR - 1Mo The metal temperature, during pressure testing, should be maintained at least ____°F (____°C) above the MDMT for piping that is more than 2 inches (5cm) thick. 30°F (17°C) The metal temperature, during pressure testing, should be maintained at least ____°F (____°C) above the MDMT for piping that is 2 inches (5cm) or less thick. 10°F (6°C) How can the inspector verify the installation of the proper material during repairs or alterations of low to high alloy piping systems? At the discretion of the owner-user or the inspector, verification can be accomplished by 100% checking or PMI testing in certain critical situations or by sampling a percentage or the material. you are responsible for verifying the material specifications of replacement piping components. Of the following, which API Recommended Practice would be used by you or the examiner as a guide to verify material specifications? API 578 Material Verification Program for New and Existing Piping Systems What should valves that are subjected to steep temperature cycling be examined for? Thermal fatigue cracking Where should thickness readings be taken on gate valves that are suspected of being exposed to corrosion/erosion? Between the seats since this is an area of high turbulence and stress Control valves or other throttling valves, in high pressure drop and slurry services, can be susceptible to what type of deteriorations? Localized corrosion/erosion of the body downstream or the orifice. Welds are often inspected for corrosion as part of a radiographic profile inspection or as part of internal inspection True When preferential weld corrosion is noted: Additional weld in the same circuit or system should be examined for corrosion. If in service weld inspection reveals imperfections in the weld, such as a crack like flaws and environmental cracking, what should be done? They shall be assessed by an engineer in accordance with API 579 FFS and or corrosion specialist. Preferential weld corrosion shall be assessed by ____ and may use ___ for guidance on weld inspection. The inspector API 577 Environmental cracking shall be assessed by: Piping engineer Some in service piping weldments may not meet the B31.3acceptance criteria; what should be done with these weldments? Nothing, they may perform satisfactorily after being hydrostatically tested. The owner user is required to specify which of the following when detection of certain planar defects is required? UT shear wave examiners that are industry qualified Fasteners, for flanged joints, should extend completely through their nuts. What is the minimum acceptable thread engagement of these fasteners? Fasteners are considered acceptably engaged if the lack of complete engagement is not more than one thread Markings, on samplings of newly installed flange fasteners and gaskets, should be examined to determine that they meet the material specification. Where the specifications would be found in which of the following? In the applicable ASME and ASTM standard The frequency and extent of inspection on piping circuits is dependent up on what two main considerations? Forms of degradation that can affect the piping and consequences of piping failure. Risk-based inspection RBI is described as which of the following? An inspection strategy based on the likelihood and consequence of failure. In performing a consequence assessment, which of the following types of potentials that should be considered listed in API 570 The potential for explosion, fire, toxicity, environmental impact, and other potential effects associated with a failure. A RBI assessment can assist in establishing an inspection strategy by defining all but which of the following? The inspector to be assigned to the inspection activity RBI assessments shall be conducted at what intervals? The assessment shall be conducted at intervals not to exceed the limits specified in API 570for piping service classes If RBI is not being used, the interval between piping inspections shall be established and maintained by using the following criteria: The corrosion rate and remaining life calculations The piping service classification The applicable jurisdictional requirements The judgment of the inspector, the piping engineer, (Read API 570 6.3.3) Thickness measurements should be based on what criteria? For class 1, 2, and 3 piping, the period between thickness measurements for CMLs or circuits should not exceed one-half the remaining life or the maximum intervals recommended in Table 1, whichever is less. When must the inspection interval be reviewed and adjusted? After each inspection or significant change in operating conditions and or inspection results