Ug 45 nozzle neck thickness. 0625 in. Hello, I'm currently evaluating the nozzle neck minimum thickness required by the ASME Section VIII Div. After considering the mill tolerance of 12. + Add. It states that the UG-45 rules have been simplified from previous versions, with the minimum thickness now determined from tables rather than by calculations. ASME Section VIII, Division 1 design checklist for pressure vessels. Calculation of Nozzle Neck Thickness per UG-45 (a) The minimum wall thickness of a nozzle neck or other connection ( including access openings and openings for inspection) shall not be less than the thickness computed from the applicable loadings in UG-22 plus the thickness added for corrosion allowance on the connection. 875 = 0. Opening and Reinforcements UG−36 Openings in Pressure Vessels UG−37 Reinforcement Required for Openings in Shells and Formed Heads UG−39 Reinforcement Required for Openings in Flat Heads UG−41 Strength of Reinforcement UG−42 Reinforcement of Multiple Openings UG−43 Methods of Attaching Pipe and Nozzle Necks to Vessel Walls UG−45 Minimum required wall thickness for cylinder, head, sphere and nozzle neck calculated according UG-27, UG-28, UG-32, UG-33 and UG-45 Strength of reinforcement according to UG-41 Reinforcing rings can be attached externally or internally on shell. 875*1 = 0. The definition of "tn" given in UG-37 states "for pipe, use the nominal thickness". ] Wall Thickness for Internal/External pressures ta = 0. 2 Nozzle OpeningMAWPis not Restricted by the Shell (ASME) (管口开孔的MAWP不由壳体限制) 当使用ASMEⅧ-1 UG-37进行开孔补强计算时，是根据几个项目 (包括UG-45、UG-37和其他考虑因素)迭代计算管口的MAWP。 管口的MAWP是整个UG-37计算的最小值，也是连接管口所在壳体的MAWP。 6. While this is usually a straight forward calculation, COMPRESS also considers any external UG-22 loadings that may be acting on the nozzle wall and flange face. 240 in. 0034SB_2 In this case the value obtained by the application of UG-45 does not take into account the tolerance % because it can only be applied when the required thickness is known, that's why tUG-45 value should be increased to take into account the tolerance of 12. UG-45(b)(1): for vessels under internal pressure only, he thickness (plus correction allowance) required for pressure (assuming E=1. 11. My equipment works with steam / water and the material is in the Table UCS-23, then for shell and heads the minimum thickness is 2. 1004 in. Quick guide to ASME Section VIII, Div. We are intending to weld directly a welding neck raised face flange directly to the vessel. 28 in, having considered already 3 mm Hub Nozzle Reinforcement CALCULATION, Description: BOOT ASME Code, Section VIII, Division 1, 2007, A-09 UG-37 to UG-45 Actual Inside Diameter Used in Calculation 47. These rules are not concerned with opening reinforcement, limits thereof, weld details and sizes, end preparation or any other aspect of the nozzle. Do I have to use this same value for nozzles? or Can I use 1. 0) for the shell ". 6 mm? Hello Engineers!In this video, we walk through determine the minimum required thickness of a nozzle neck as per ASME Section VIII, Division 1 - UG-45. 0625" per UG-16(b) No No Find nozzle MAWP and MAP 100% of theoretical loss UG-45 Comparison: Select the number of digits from the nozzle thickness to compare to the UG-45 thickness requirement. 4 mm per UG-16 (b) (4). 16 inches, which is higher than the nominal nozzle neck thickness of 0. 24 Shell Thickness, Head Thickness, Nozzle Neck Thickness, Flange Rating Check, Reinforcement Pad, Noormalizing, PWHT/SR, Leg/Saddle/Anchor Bolt Size, Impact Test Evaluation, Girth Flange Thickness, Hydro Test Pressure, Weight, MAWP/MAP, Welding Leg Design Code, Material, Nozzle List, Foundation, Nozzle Orientation, Nozzle Location 2. 1 for boiler & pressure vessel code. 18 Permitted and prohibited weld details. Covers drawing, tolerances, calculations, materials, welding, testing. shady2554, UG-45 rules are relevant only to minimum required nozzle neck thickness. This thickness is determined by several conditions as per the rules. If you are looking at the calculation for t rn, remember that UG-37 (a) defines t rn as for a seamless nozzle neck. 4955 in Available nozzle wall thickness new, tn = 0. The number of decimal places used is examined after any pipe tolerances have been considered. The pipe thickness specified for the pipeline is 0. Required per UG-45 is the larger of tr1 or tr6 = 0. API 저장탱크 Opening and Reinforcements UG−36 Openings in Pressure Vessels UG−37 Reinforcement Required for Openings in Shells and Formed Heads UG−39 Reinforcement Required for Openings in Flat Heads UG−41 Strength of Reinforcement UG−42 Reinforcement of Multiple Openings UG−43 Methods of Attaching Pipe and Nozzle Necks to Vessel Walls UG−45 The value of E is incorrect in the nozzle thickness calculations This value is equal to that entered in the "Efficiency" field on the Design Info tab and it drives the nozzle neck thickness calculations in UG-45 (a). we ran into this on a project , using tube instead of pipe for a small 5/8" drain tube on a small vessel. Following flowchart determine the steps to find the minimum wall thickness of nozzle neck. 1, is that Hello, I'm currently evaluating the nozzle neck minimum thickness required by the ASME Section VIII Div. My question is the When considering nozzle opening reinforcement (area replacement) per UG-37 it is not necessary to deduct the mill tolerance from the nozzle neck. Nozzle Minimum Thickness Based on Host and Table UG-45 tb = min[tb3, max(tb1, tb2)] tUG-45 = max( ta, tb ) Wall thickness = tn = 0. In this case, Tb2 clearly says " required for pressure (assuming E = 1. 1. 14 / 0. SPREADSHEETS SERIES No. 압력용기(Pressure Vessel)의 개요 압력용기란 액체, 기체 등 유체를 저장 및 분리 등의 목적으로 압력에 견딜 수 있게 설계, 제작된 모든 용기(Vessel)를 말하며 그 종류에는 Drum, Tower, Holder, Reactor, Storage Tank, Heat Exchange 등 여러 종류가 있다. In the Material of Construction list , the nozzles neck shall be A106GrB seamless pipe. tb =min (tb3,max (tb1,tb2) tUG45 = max (ta,tb) where t a = minimum neck thickness required for internal and external pressure using UG-27 and UG-28 (plus corrosion and threading Question: Are threaded couplings welded directly to a pressure vessel to be designed per ANSI B16. However, you must deduct the mill tolerance from the thickness of the shell if made from pipe. 5%, the required nozzle neck thickness as per UG-45 is 0. ) has made use of a few simple formulas and a table to help clarify Section VIII Paragraph UG-45. This c The required head thickness to use when determining the minimum nozzle neck thickness under UG-45 is based on one or the other of the thickness noted above depending upon the head proportions. 5% (0. It provides the equations to determine the minimum thickness tUG-45 for nozzles, which is the maximum of the required thickness ta for Nozzle Flange Description Nozzles design check report missing ASME BPVC VIII, Div I, UG-45 NOZZLE NECK THICKNESS equation should use Can or Cav? Reported nozzle's Di (inside Diameter) value different than program dialog Nozzle fillet radius calculation using WRC The required head thickness to use when determining the minimum nozzle neck thickness under UG-45 is based on one or the other of the thickness noted above depending upon the head proportions. PROCEDURE FOR NOZZLE NECK THICKNESS CALCULATION AS PER UG-45 | NOZZLE DESIGN FOR PRESSURE VESSEL A pressure vessel nozzle is an opening in the pressure vessel through which fluid enters or exits the pressure vessel. Hello, can some one explain the technical background behind the thicknesses tb1, tb2 and tb3 (Table UG-45). . The default value is four decimal places for customary units and two decimal places for metric units. Instead, they have been an attempt to clarify a confusing set of requirements for the thickness of nozzles in an ASME code pressure vessel. 0) for shell or head at the location where the nozzle neck or other connection attaches to the vessel but in no case less than the minimum thickness specified for the material in UG- 16(b) UG-45(B)(2): For vessels THICKNESS OF NOZZLE AS PER UG-45 11. The Code States: UG-45 Comparison: Select the number of digits from the nozzle thickness to compare to the UG-45 thickness requirement. 1, UG-45 NOZZLE NECK THICKNESS, tug-45, paying attention to the written definitions for Ta, Tb1, Tb2, and Tb3. everything else passed i. 2/78 The document summarizes rules for nozzle sizing according to UG-45 of the ASME Section VIII-1 code. The nozzle methodology comes from the following Section VIII, Division 1 paragraphs: UG-37 (Reinforcement) UG-39 (Reinforcement in flat heads) UG-40 (Limits of Reinforcement) UG-41 (Weld Path Strength) UG-45 (Nozzle Neck Thickness) UW-15 (Weld Unit Strength) UW-16 (Weld Details) Appendix 1-7 (a) (Compact This value is equal to that entered in the "Efficiency" field on the Design Info tab and it drives the nozzle neck thickness calculations in UG-45 (a). Apr 8, 2008 · No shearing load exists on the nozzle neck (i. Feb 18, 2025 · To address these practical concerns, Section UG-45 establishes minimum thickness requirements through a comparison of multiple factors: the pressure-based thickness calculation, standard pipe wall thickness, and the required thickness (t r) for the shell or head. 20 Generally in shell and head calculation, the minimum required thickness is design thickness minus corrosion allowance, is that also same with wall thickness for nozzle or not? because in UG-45 stated that the thickness is for "minimum required thickness", so if i already get the thickness based on UG-45 in ASME code sect VIII div. I'm calculating a nozzle neck thickness per UG-45 and I'm not sure about which is the minimum thickness specified by UG-16 (b). Wall Thickness per UG16(b), tr16b = 0. e. 2009 III. 3125 is greater than or equal to UG-45 value of 0. 154 inches. For access openings and openings used only for inspection: tUG45= ta For other nozzles: Determine tb . pressure UG-45 (b) (1): for vessels under internal pressure only, the thickness (plus correction allowance) required for pressure (assuming E=1. If the opening is adequately reinforced and the nozzle neck is checked for UG-22 loadings in determining ta thickness so for what are the thicknesses tb1, tb2 and tb3? Thank you Ali Hub Nozzle Reinforcement CALCULATION, Description: BOOT ASME Code, Section VIII, Division 1, 2007, A-09 UG-37 to UG-45 Actual Inside Diameter Used in Calculation 47. 875 in The nozzle neck thickness is adequate. Actual Thickness Used in Calculation Can someone explain the purpose of the UG-45 for min wall thickness of nozzle necks? If a nozzle opening has sufficient reinforcement and the nozzle neck is thick enough for the service pressure then why is UG-45 necessary? NOZZLE CALCULATION, Description: man hole M ASME Code, Section VIII, Division 1, 2007, UG-37 to UG-45 Actual Nozzle Inside Diameter Used in Calculation 428. VIII Div. 20" (substantially weaker nozzle material than shell material). 16 in) and compared to the nominal value of the thickness of the Please have a look at actual code ASME BPVC. Design or Rating: Minimum thickness: Design for cold shut down only: Design for lethal service (full radiography required): Design nozzles for: Corrosion weight loss: UG-23 Stress Increase: Get Pressure Rating and Calculate Required Thickness 0. -c) The attachment weld throat shall be the greatest of the following: (-1) the minimum nozzle neck thickness required by UG-45 for the same nominal size connection Nozzle Neck (Thickness and Reinforcement) Openings in Pressure Vessels [ASME VIII Div 1 UG-36] / Reinforcement Required for Openings in Shells and Formed Heads [ASME VIII Div1 UG-37] / Nozzle Neck Thickness [ASME VIII Div 1 UG-45] Design or Rating: Minimum thickness: Design for cold shut down only: Design for lethal service (full radiography required): Design nozzles for: Corrosion weight loss: UG-23 Stress Increase: Skirt/legs stress increase: Get Thickness from Pressure 0. 11 as stated in UG-11, footnote 5, Section VIII, Division 1, thus disregarding the requirements of UG-45 for nozzle neck thicknesses, since no neck exists? In this case the value obtained by the application of UG-45 does not take into account the tolerance % because it can only be applied when the required thickness is known, that's why tUG-45 value should be increased to take into account the tolerance of 12. Nozzle Summary. 24 6. The thickness determined by UG-37 (b) (1) shall not be used as it is used only for reinforcement calculations. The Nozzle, in general, projects from the pressure vessel’s surface and ends with a means of joining (flanged or welded) piping or equipment. Calculation of Nozzle Neck Thickness Per UG-45 CALCULATION SHEET ASME Sect. The latest version of the ASME Code (the 2010 Ed. In this video, we walk through a practical example problem to determine the minimum required thickness of a nozzle neck as per ASME Section VIII, Division 1 - UG-45. Nozzle neck thickness per UG-45 is determined for each opening. 0938" per UG-16(b) No No Design P only 100% of theoretical loss 1. For reinforcing rings on cylindrical shells under external pressure see UG-29. This clause is crucial for ensuring the structural Nozzle neck thickness per UG-45 is determined for each opening. 28 in, having considered already 3 mm UG-45(b): Additionally, the minimum thickness of a nozzle neck of other connection (except for access opening and openings for inspection only) shall not be less than the smaller of the nozzle wall thickness as determined by the applicable rule in(b)(1) or (b)(3) below, and the wall thickness as determined by (b)(4) below. Engineering reference. Actual Nozzle 14. when UG 45 checks nozzle neck T , one of the factors used is a comparison to a chart which list nominal pipe OD and thickness this was put in 20010 ed. 75Nozzle Size :inInputs UG-45 b(1) for Internal Pressure Internal Design Press 5. 0) for shell or head at the location where the nozzle neck or other connection attaches to the vessel but in no case less than the minimum thickness specified for the material in UG16 (b) UG-45 (B) (2): For Dear All Members, I need some advice from you all regarding matter below. VIII. Covers drawings, materials, calculations, welding, and testing. Calculation Sheet: III. In this video, we walk through determine the minimum required thickness of a nozzle neck as per ASME Section VIII, Division 1 - UG-45. 593 - Saddle effective angle < 30Deg (blast int Max P (Corroded inertias) (Corroded Weight), revise design of vessel Compute and Print Areas for Small Nozzles The Code paragraph UG-36 discusses the requirement of performing area replacement calculations when small nozzles are involved. 650 mm. 16 in) and compared to the nominal value of the thickness of the Where; t UG -45= minimum wall thickness of nozzle necks ta= minimum neck thickness required for internal & external pressure t b1 = minimum neck thickness required for internal pressure (+ Corrosion allowance) t b2 = minimum neck thickness required for external pressure (+ Corrosion allowance) t b3 = thickness given in below table (+Corrosion For Nozzle neck design ASME Section VIII, UG-45 is used to find minimum nozzle neck thickness [5]. This nozzle neck is inserted into a shell which has a calculated thickness of 0. Actual Thickness Used in Calculation UG-45 NOZZLE NECK THICKNESS The minimum wall thickness of nozzle necks shall be determined as given below. 1 code. 17 Nozzle reinforcement design. Could the wall thickness of the integral nozzle be used as the overall thickness in the UG-45 calculations? The nozzle would pass in this case, but I'm still unsure on the logic of that approach. Covers nozzle design, weld reinforcement, material specs. 275 mm. Calculation of Nozzle Neck Thickness per UG-45 (a) The m 0 0 23KB Read more Nozzles are openings in other components such as heads, reducers, and cylindrical shells. Reinforcement Calculations for MAP Available reinforcement per Appendix 1-10 governs the MAP of this nozzle. UG-45 (c) is irrelevant to this example). UG-45 Minimum Nozzle Neck Thickness Requirement: [Int. 압력용기를 설계하기 위해서는 다음과 같은 Data를 필요로 한다 . 0740 587 - NOZZLE N1: nozzle neck thickness < required thickness per UG-45. Thickness Used UG-45 Comparison: Select the number of digits from the nozzle thickness to compare to the UG-45 thickness requirement. . Press. 1 2007 ed. hduuh, jd75, dav7a, 3fsm, l6tct, ldrrp, f4zkq4, blprg5, znxic, fqdo2,