ASME B31.3 Process Piping Course 13. Inspection, Examination and Testing BECHT ENGINEERING COMPANY, INC. Inspection, Examination and Testing -1 ASME B31.3 Process Piping ...
ASME B31.3 Code "Process Piping,” It was last updated for the 2002 edition. ASME B31.3 applies to process piping and tubing systems at Los
ASME B31.3 PROCESS PIPING LECTURER: Mr. R. Peter Deubler, P. Eng DATE: September 9-10, 2015 LOCATION: ANRIC Enterprises Inc., …
Strain Stress E = Elastic Modulus = Stress/Strain S Y = Yield Strength S T = Tensile Strength Typical Carbon Steel BECHT ENGINEERING COMPANY, INC. Materials -8 Strength of Materials S T = Tensile Strength Typical Stainless Steel Strain Stress S Y = Y
ASME B31.1 and ASME B31.3 General Requirements Overview Page 1 of 3 Training Duration: 21 hours total (3 days x 7 hour s) (Certiﬁcate of Attendance will be provided) DESCRIPTION A piping system is a set of pipes and other components (valves, elbows,
ASME B31.3 Process Piping Course 12. Fabrication and Installation BECHT ENGINEERING COMPANY, INC. Fabrication and Installation -1 ASME B31.3 Process Piping …
established that ABSA document AB-518 “Pressure Piping Construction Requirements” ... IQI – means Image Quality Indicator (or penetrameter) as referenced in ASME Section V Code. ISO – means International Organization for Standardization. ITP – means
Pressure Testing of ASME B31.8 Metallic Piping January 2017 . Process Industry Practices Page 6 of 13 . a. Minimum pipeline temperature during the test . b. Method of limiting access to the area in which the pipeline is being tested . c. Stored energ
Changes to ASME B31.3, “Process Piping” By Vince Carucci The 2014 edition of ASME B31.3 is a revision of the 2012 edition, was officially issued February 27, 2015, and became effective six months after that date. As with previous editions, it include
The ASME B31.3 Code defines unlisted components as components not in Tables 326.1, A326.1, or K326.1. Unlisted components can have pressure ratings but the owner and/or the designer has the responsibility to verify that the design, materials, fabrica
Differences in the Piping Requirements between ASME Codes B31.3-2010 and B31.9-2011. This comparison applies only to Category D piping of B31.3, which is the least severe and strict of this code, because usually this would be the applicable Category for JLab (fluids of this group are nonflammable, nontoxic, not able to cause damage to human tissue, with design pressure not exceeding 150 psig, and temperature between -20 and 366°F). If the system does not meet all these criteria, such as the most probable situation here, which would be a design pressure above 150 psig, then the applicable fluid service category at JLab would usually be “Normal” (the other service options are: “Elevated Temperature”, “High Pressure”, “High Purity”, or Category M for highly toxic fluids), and this classification would require the implementation of techniques and measures that are not usually used at JLab, for example, radiographic examination of a minimum of 5% of the welds to detect internal porosities and inclusions. However, for liquids at design pressures between 150 and 350 psig, this requirement is avoided if the system is designed under B31.9. Regarding design requirements, the methods, formulas, and criteria, indicated in these two codes, are essentially the same. This means that following B31.9 does not imply automatically that a simplified analysis is allowed, and applying B31.3 does not lead automatically to a mandatory exact analysis: the right analysis method for a piping system, under either of these codes, is to be selected on a case-by-case basis, considering its temperature, pressure, pipe size, and the requirements of the pieces of equipment to which this pipe will be connected to. Of course, the design chapter of B31.3 is double the length of that one of B31.9, but this is because B31.3 covers the whole range of services and materials, while B31.9 is very limited but it refers, in ten different places, to design sections of the stricter B31.1 “Standard for Power Piping”. Allowable stresses according to B31.9 are generally lower than those indicated in B31.3 so, regarding pressure design, the pipe wall calculated with B31.9 is slightly thicker than what is determined using B31.3, but these calculated values are usually so much smaller than commercially available pipe thicknesses, that this difference does not have any practical impact. B31.3 leaves to the engineer the decision of the right method of analysis. This freedom is indicated on page 38, subsection 319.4.2, titled “Formal Analysis Requirements”: its paragraph (a) reads “a piping system…shall be analyzed by a simplified, approximate, or comprehensive method of analysis, as appropriate”, leaving the definition of what is “appropriate” intentionally vague: its paragraph (b) indicates that “a simplified or approximate method may be applied only if used within the range of configurations for which its adequacy has been demonstrated”, but the requirements and conditions of this “adequacy demonstration” are not given, not even implicitly. Furthermore, as indicated in paragraph (c) “acceptable comprehensive methods of analysis include analytical and chart methods”, so they are not limited only to computerized stress analysis using FEA software. This is confirmed on page 41, subsection 320.1, which reads “sustained loads may be evaluated by detailed analysis, approximate methods, or simplified means such as span tables”. One important application of the engineer’s authority is defined on page 42, subsection 321.1.2, that also exemplifies the wide range of design approaches from which he / she can select from: “In general, the location and design of pipe supporting elements may be based on simple calculations and engineering judgment. However, when a more refined analysis is required, and a piping analysis is made…”. The only differences between B31.9 and Class D of B31.3 that have been found, are respect to examination and testing. The Acceptance Criteria for welding imperfections of B31.9 (page 43, subsection 936.6.1), are less severe than those of B31.3, (pages 74 to 76), regarding lack of fusion, incomplete penetration, and height of reinforcement. However, the requirement for an acceptable welding with undercutting in B31.9, is stricter than that of B31.3. Both codes allow an Initial Service Leak Test instead of a Hydrostatic Test, but B31.9 is stricter, because it allows this substitution only if the system meets the pressure and temperature limitations indicated on page 45, while B31.3 has no specific limitations and leaves this decision to the owner (page 81, parag. 345.1(a) and page 84, subsection 345.7).
FLOWCHART FOR DETERMINATION OF THE APPLICABLE PIPING CODE (B31.3 vs. B31.9) A new piping system is to be designed (at JLab, pipe size will always be smaller than 48” in CS, 24” in SS and plastic, and 12” in copper, and the largest wall thickness in CS and SS will always be 0.5”, so pipe dimensions are not verified in this chart)
No, it is toxic Liquid is nontoxic?
It is not a liquid, but a gas
Gas is nontoxic AND nonflammable?
No, it is toxic and/or flammable
Yes Temp. is from 0 to 250°F AND Pressure is 350 psig OR vacuum
Yes Temp. is from 0 to 200°F AND Pressure is 150 psig
No, conditions are outside these limits
No, conditions are outside these limits Apply B31.3
Apply B31.9, because these conditions are within the scope of this code, so there is no need to apply B31.3, which is intended primarily for plants that “manufacture or process chemicals” where “reactions, separations, and other processes are carried out”.
Note: These conditions are indicated in B31.9, pages 1 and 3, paragraph 900.1.2.