Section VIII Div 1 and 2Addenda

1、Section VIII Division 1 2011 Code Addenda ChangesUrey Miller - Chair BPV VIIISection VIII Div. 1 2011 Addenda ChangesThis presentation:Does not discuss all Code revisionsOnly provides brief summaryCovers items of general interest Feel free to ask questionsSection VIII Div. 1 2011 Addenda ChangesGene

2、ralThe 2011 Addenda will be a reprint of the entire book not just revised sheetsAfter the 2011 Addenda, no future addenda will be publishedNew edition will be published on a two year cycleNext edition will be 2013Single Mark Code Symbol, ASME Code Symbol becomes Certification Mark“Code stamped becom

3、es stamped with the Certification Mark“Code stamp holder becomes Certificate holderCertificate of Authorization Holder becomes Certificate holder“U, UM, UV and UD Stamps becomes Certification Mark with applicable (U, UM, UD, UV) Designator“appropriate Code Symbol becomes Certification Mark with appr

4、opriate DesignatorSection VIII Div. 1 2011 Addenda ChangesSingle Mark - continuedSection VIII Div. 1 2011 Addenda ChangesSection VIII Div. 1 2011 Addenda ChangesTable U-3Referenced documents in U-3 have been updatedDimensional standards are shown as “Latest Edition”Documents with P/T ratings and spe

5、cific technical requirements show year of accepted editionBPV Committee wishes to maintain control of technical requirements Several new references have been addedSection VIII Div. 1 2011 Addenda ChangesTABLE U-3YEAR OF ACCEPTABLE EDITION OF REFERENCED STANDARDS IN THIS DIV ISIONTitleNumberYearSeat

6、Tightness of Pressure Relief ValvesAPI Std. 5271991 (R2007)(1)Unified Inch Screw Threads (UN and UNR Thread Form) Pipe Threads, General Purpose (Inch)ASME B1.1ANSI/ASME B1.20.1Latest EditionLatest EditionCast Iron Pipe Flanges and Flanged Fittings, Classes 25,125, and 250ASME B16.12005Pipe Flanges a

7、nd Flanged FittingsASME B16.52009(2)Factory-Made Wrought Buttwelding FittingsASME B16.9Latest EditionForged Fittings, Socket-Welding and ThreadedASME B16.11Latest EditionCast Bronze Threaded Fittings, Classes 125 and 250ASME B16.15Latest EditionMetallic Gaskets for Pipe Flanges Ring-Joint, Spiral- W

8、ound, and JacketedASME B16.20Latest EditionCast Copper Alloy Pipe Flanges and Flanged Fittings, Class 150, 300, 400, 600, 900, 1500, and 2500ASME B16.242006Section VIII Div. 1 2011 Addenda ChangesCurrentFOREWORD The Code does not full address tolerances. When dimensions, sizes, or other parameters a

9、re not specified with tolerances, the values of these parameters are considered nominal and allowable tolerances or local variances may be considered acceptable when based on engineering judgment and standard practices as determined by the designer. Added New ParagraphU-5 TOLERANCESThe Code does not

10、 full address tolerances. When dimensions, sizes, or other parameters are not specified with tolerances, the values of these parameters are considered nominal and allowable tolerances or local variances may be considered acceptable when based on engineering judgment and standard practices as determi

11、ned by the designer. Section VIII Div. 1 2011 Addenda Changes UG-11 rewritten for clarity and technical changes Similar Revisions also made to Div 2 and Div 3 Paragraph re-titled “PREFABRICATED OR PREFORMED PRESSURE PARTS FURNISHED WITHOUT A CODE SYMBOL STAMP” Many changes are editorial and organiza

12、tional Technical changes are highlighted hereafterSection VIII Div. 1 2011 Addenda ChangesUG-11 (contd) Add requirement that para is not applicable to welded shells and heads Added provision that Manufacturer may supply parts under UG-11 Defines documentation to be obtained and available for AI revi

13、ew (in addition to RT) Manufacturer of welded part must certify welding is Code compliant Allows the vessel Manufacturer to perform analysis of part for Code design complianceSection VIII Div. 1 2011 Addenda ChangesUG-11 (contd) Manufacturer may produce standard pressure parts of their own design, a

14、nd subcontract the welding of these parts to a non-certificate holder Subcontract activities must be defined in Certificate Holders QA manual States that AI has access to subcontractors shop for inspection Manufacturer must receive AI acceptance of subcontracting prior to proceedingSection VIII Div.

15、 1 2011 Addenda ChangesUG-20Cautionary note added to UG-20 “Design Temperature” References WRCB 470 for suggested details for vessels in elevated temperature serviceNonmandatory requirement Section VIII Div. 1 2011 Addenda ChangesUG-20 DESIGN TEMPERATURE(a) Maximum. Except as required in UW-2(d)(3),

16、 the maximum temperature used in design shall be not less than the mean metal temperature (through the thickness) expected under operating conditions for the part considered (see 3-2). If necessary, the metal temperature shall be determined by computation or by measurement from equipment in service

17、under equivalent operating conditions. See also U-2(a). Note: The user and Manufacturer are cautioned that certain fabrication details allowed by this Division may result in cracking at welds and associated heat affected zones (HAZ) for vessels designed for use at elevated temperature. WRC Bulletin

18、470 “Recommendations for Design of Vessels for Elevated Temperature Service” has information which may prove helpful to the vessel designer. WRC Bulletin 470 contains recommended design details for use at elevated temperature service which is, for the purposes of this Division, when the allowable st

19、resses in Section II Part D are based on time dependent properties. The use of these details does not relieve the Manufacturer of design responsibility with regards to consideration of stresses associated with both steady state conditions and transient events, such as startup, shutdown, intermittent

20、 operation, thermal cycling, etc., as defined by the user.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-32 FORMED HEADS, AND SECTIONS, PRESSURE ON CONCAVE SIDE(a) The minimum required thickness at the thinnest point after forming18 of ellipsoidal, torispherical, . (b) The thickness of an unstaye

21、d ellipsoidal or torispherical head shall in no case be less than the required thickness of a seamless hemispherical head divided by the efficiency of the head-to-shell joint. (c) The symbols defined below are used in the formulas of this paragraph:Revised to ReadUG-32 FORMED HEADS, AND SECTIONS, PR

22、ESSURE ON CONCAVE SIDE(a) The minimum required thickness at the thinnest point after forming18 of ellipsoidal, torispherical, . (b) Deleted(c) The symbols defined below are used in the formulas of this paragraph:Section VIII Div. 1 2011 Addenda ChangesSection VIII Div. 1 2011 Addenda ChangesUG-39New

23、 Mandatory Appendix 41 for Electric Immersion Heater Support Plates Uses same methods as given in Part UHX for perforated plateResults in a more accurate, less conservative design than required by UG-39 reinforcement rules Section VIII Div. 1 2011 Addenda ChangesCurrentUG-39 REINFORCEMENT REQUIRED F

24、OR OPENINGS IN FLAT HEADSUG-39(a) General. The rules in this paragraph apply to all openings in flat heads except opening(s) that do not exceed the size and spacing limits in UG-36(c)(3) and do not exceed one-fourth the head diameter or shortest span.Revised to ReadUG-39 REINFORCEMENT REQUIRED FOR O

25、PENINGS IN FLAT HEADSUG-39(a) General. The rules in this paragraph apply to all openings in flat heads except opening(s) that do not exceed the size and spacing limits in UG-36(c)(3) and do not exceed one-fourth the head diameter or shortest span. Electric immersion heater support plates (See 41-3)

26、may be designed in accordance with the rules of this paragraph or Appendix 41.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-40 LIMITS OF REINFORCEMENT(a) The boundaries of the cross sectional area in any plane normal . (b) The limits of reinforcement, measured parallel to the vessel wall, shall

27、be at a distance, on each side of the axis of the opening, equal to the greater of the following:(1) the diameter d of the finished opening; (2) the radius Rn of the finished opening plus the vessel wall thickness t, plus the nozzle wall thickness tn.Revised to ReadUG-40 LIMITS OF REINFORCEMENT(a) T

28、he boundaries of the cross sectional area in any plane normal . (b) The limits of reinforcement, measured parallel to the vessel wall, shall be at a distance, on each side of the axis of the opening, equal to the greater of the following:(1) the diameter d of the finished opening; (2) the inside rad

29、ius Rn of the nozzle plus the wall thickness t, plus the nozzle wall thickness tn.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-44 FLANGES AND PIPE FITTINGSThe following standards covering flanges and pipe fittings are acceptable for use under this Division in accordance with the requirements of

30、 UG-11. Pressuretemperature ratings shall be in accordance with the appropriate standard except that the pressuretemperature ratings for ASME B16.9 and ASME B16.11 fittings shall be calculated as for straight seamless pipe in accordance with the rules of this Division including the maximum allowable

31、 stress for the material. The thickness tolerance of the ASME standards shall apply.Revised to ReadUG-44 FLANGES AND PIPE FITTINGSThe following standards .stress for the material. The thickness tolerance of the ASME standards shall apply.UG-44(a) ASME B16.1, Gray Iron Pipe Flanges and Flanged Fittin

32、gs, Classes 25, 125, and 250). Permitted only for pressure vessel parts used on pressure vessels constructed in accordance with Part UCI of this DivisionSection VIII Div. 1 2011 Addenda ChangesCurrentINSPECTION AND TESTSUG-90 GENERAL(a) The inspection and testing of pressure vessels to be marked wit

33、h the ,(b) The Manufacturer has the .(c)(1) The Inspector shall make all inspections specifically required of him(a) verifying that the Manufacturer(n) signing the Certificate of Inspection on the Manufacturers Data Report when the vessel, to the best of his knowledge and belief, is in compliance wi

34、th all the provisions of this Division. Revised to ReadINSPECTION AND TESTSUG-90 GENERAL(a) The inspection and testing of pressure vessels to be marked with the,(b) The Manufacturer has the .(c)(1) The Inspector shall (a) verifying that the Manufacturer(n) signing the Certificate of Inspection on th

35、e Manufacturers Data Report when the vessel, to the best of his knowledge and belief, is in compliance with all the provisions of this Division. When the Inspector has certified by signing the Manufacturers Data Report, this indicates acceptance by the Inspector. This acceptance does not imply assum

36、ption by the Inspector of any of the responsibilities of the Manufacturer.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-93 INSPECTION OF MATERIALS(a) Except as otherwise provided in UG-4(b), UG-10, UG-11, or UG-15, requirements .(1) For plates, the vessel Manufacturer shall obtain the material t

37、est report or certificate of compliance as provided for in the material specification and the Inspector shall examine the Material Test Report or certificate of compliance and shall determine that it represents the material and meets the requirements of the material specificationRevised to Read(a)(1

38、) For plates, the vessel .(a) These documents shall include results of all required tests and examinations, evidence of compliance with the material specifications and additional requirements, as applicable. When the specification permits certain specific requirements to be completed later, those in

39、complete items shall be noted on the material documentation. When these specific requirements have been completed by someone other than the material manufacturer, this completion shall be documented and attached to the material documentation. (b) The vessel Manufacturer shall receive a copy of the t

40、est report as prepared by the originator of the data and maintain as part of his construction records.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-99 STANDARD HYDROSTATIC TEST(a) A hydrostatic test shall be conducted .(f) Single-wall vessels designed for a vacuum or partial vacuum only, and cha

41、mbers of multichamber vessels designed for a vacuum or partial vacuum only, shall be subjected to an internal hydrostatic test or when a hydrostatic test is not practicable, to a pneumatic test in accordance with the provisions of UG-100. Either type of test shall be made at a pressure not less than

42、 1.3 times the difference between normal atmospheric pressure and the minimum design internal absolute pressure.Revised to ReadUG-99 STANDARD HYDROSTATIC TEST(a) A hydrostatic test shall be conducted .(f) Singlewall vessels and individual pressure chambers of combination units designed for vacuum on

43、ly MAWP less than or equal to zero (0) shall be subjected to either: (1) an internal hydrostatic pressure test in accordance with UG99, or a pneumatic pressure test in accordance with UG100. The applied test pressure shall be not less than 1.3 times the specified external design pressure; or Section

44、 VIII Div. 1 2011 Addenda ChangesCurrentUG-99 STANDARD HYDROSTATIC TEST(f) Single-wall vessels designed for a vacuum or partial vacuum only, and chambers of multichamber vessels designed for a vacuum or partial vacuum only, shall be subjected to an internal hydrostatic test or when a hydrostatic tes

45、t is not practicable, to a pneumatic test in accordance with the provisions of UG-100. Either type of test shall be made at a pressure not less than 1.3 times the difference between normal atmospheric pressure and the minimum design internal absolute pressure.Revised to ReadUG-99 STANDARD HYDROSTATI

46、C TEST(f) Singlewall .(1) an internal (2) a vacuum test conducted at the lowest value of specified absolute internal design pressure. In conjunction with the vacuum test, a leak test shall be performed following a written procedure complying with the applicable technical requirements of Section V, A

47、rticle 10 for the leak test method and technique specified by the user. Leak testing personnel shall be qualified and certified as required by T120(e) of Section V, Article 1.Section VIII Div. 1 2011 Addenda ChangesCurrentUG-99 STANDARD HYDROSTATIC TEST (a) A hydrostatic test shall be conducted .(b)

48、 Except as otherwise permitted in (a) above and 27-4, vessels . All loadings that may exist during this test shall be given consideration.Revised to ReadUG-99 STANDARD HYDROSTATIC TEST (a) A hydrostatic test shall be conducted .(b) Except as otherwise permitted in (a) above and 27-4, vessels . All l

49、oadings that may exist during this test shall be given consideration. The hydrostatic test pressure reading shall be adjusted to account for any static head conditions depending on the difference in elevation between the chamber being tested and the pressure gage.Section VIII Div. 1 2011 Addenda Cha

50、ngesCurrentUG-102 TEST GAGES(a) An indicating gage shall be connected directly to the vessel. If the indicating gage is not readily visible to the operator controlling the pressure applied, an additional indicating gage shall be provided where it will be visible to the operator throughout the durati

51、on of the test. For large vessels, it is recommended that a recording gage be used in addition to indicating gages. Revised to ReadUG-102 TEST GAGES(a) An indicating gage shall be connected directly to the vessel. If the indicating gage is not readily visible to the operator controlling the pressure

52、 applied, an additional indicating gage shall be provided where it will be visible to the operator throughout the duration of the test. For large vessels, it is recommended that a recording gage be used in addition to indicating gages or with a pressure line that does not include intermediate valves

53、.Section VIII Div. 1 2011 Addenda ChangesCurrentUW-3 WELDED JOINT CATEGORY The term “Category” as used herein defines the location of a joint in a vessel, but not the type of joint. The “Categories” established by this paragraph are for use elsewhere in this Division in . locations included in each

54、category.Revised to ReadUW-3 WELDED JOINT CATEGORY The term “Category” as used herein defines the location of a joint in a vessel, but not the type of joint. The “Categories” established by this paragraph are for use elsewhere in this Division in . locations included in each category. Welded joints

55、not defined by the category designations include but are not limited to Fig. 5-1(a) corner joints, Fig. 9-5 jacket closure-to-shell welds and Fig. 26-13 fillet welds. Unless limited elsewhere in this Division, the UW-9(a) permissible weld joint types may be used with welded joints that are not assig

56、ned a category.Section VIII Div. 1 2011 Addenda ChangesCurrentUW-21 FLANGE TO NOZZLE NECK WELDSUW-21(a) ASME B16.5 socket weld flanges shall be welded to a nozzle neck using an external fillet weld. The minimum fillet weld throat dimension shall be the lesser of the nozzle wall thickness or 0.7 time

57、s the hub thickness of the socket weld flange. See Fig. UW-21, illustration 4). UW-21(b) ASME B16.5 slip-on flanges shall be welded to a nozzle neck using an internal and an external weld See Fig. UW-21, illustrations (1), (2), and (3).Revised to ReadUW-21 ASME B16.5 SOCKET AND SLIP-ON FLANGE WELDSU

58、W-21(a) ASME B16.5 socket weld flanges shall be welded using an external fillet weld. The minimum fillet weld throat dimension shall be the lesser of the nozzle wall thickness or 0.7 times the hub thickness of the socket weld flange. See Fig. UW-21, illustration 4). UW-21(b) ASME B16.5 slip-on flang

59、es shall be welded using an internal and an external weld See Fig. UW-21, illustrations (1), (2), and (3).Section VIII Div. 1 2011 Addenda ChangesDeleted current Figure UW-21 (1) and replaced with new Figure UW-21(1)Note change in location of weld toe wrt. the dimension lines Section VIII Div. 1 201

60、1 Addenda ChangesCurrentUW-50 NONDESTRUCTIVE EXAMINATION OF WELDS ON PNEUMATICALLY TESTED VESSELSOn welded pressure vessels to be pneumatically tested in accordance with UG-100, the full length of the following welds shall be examined7 for the purpose of detecting cracks:(a) all welds around opening