2021-06-24_REVISION - M2012032 - Laserfiche WebLink

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ASME 1331.3-2016 Table K305.1.2 Required Ultrasonic or Eddy K306.1 Pipe Fittings Current Examination of Pipe and Tubing for K306.1.1 General. All castings shall have a casting Longitudinal Defects quality factor E, = 1.00,with examination and accept- Diameter, Examination Paragraph ance criteria in accordance with para.K302.3.3.All welds mm (in.) Required Reference shall have a weld quality factor Ej = 1.00,with examina- d<3.2 ('/8) or None tion and acceptance criteria in accordance with paras. D<6.4 ('/4) K341 through K344. Spiral (helical seam)welds are not permitted. Listed fittings may be used in accordance 3.2 ( <_d<_ 17.5 ( 2 Eddy current (ET) K344.8 or with para. K303. Unlisted fittings may be used only in andd 6.4 (1/4) 5 D 5 25.5.4 (1) [Note K344.6 accordance with para. K302.2.3. ultrasonic ((UT) d> 17.5 (11/6) or D> 25.4 (1) Ultrasonic (UT) K344.6 K306.1.2 Specific Fittings (a) Socket welding fittings are not permitted. NOTE: (b) Threaded fittings are permitted only in accordance (1) This examination is limited to cold drawn austenitic stainless with para. K314. steel pipe and tubing. (c) Branch connection fittings(see para. 300.2)whose design has been performance tested successfully as The designer is cautioned that the benefits of prestress required by para. K304.7.2(b) may be used within their maybe reduced due to thermal,strain softening,or other established ratings. effects. K306.2 Pipe Bends PART 3 K306.2.1 General. Abend made in accordance with FLUID SERVICE REQUIREMENTS FOR PIPING para. K332.2 and verified for pressure design in accor- COMPONENTS dance with para. K304.2.1 shall be suitable for the same K305 PIPE service as the pipe from which it is made. K306.2.2 Corrugated and Other Bends. Bends of Pipe includes components designated as "tube" or other design (such as creased or corrugated) are not "tubing" in the material specification, when intended permitted. for pressure service. K306.3 Miter Bends K305.1 Requirements Miter bends are not permitted. K305.1.1 General. Pipe and tubing shall be either K306.4 Fabricated or Flared Laps seamless or longitudinally welded with straight seam and a joint quality factor Ej = 1.00, examined in accor- Only forged laps are permitted. dance with Note (2) of Table K341.3.2. Spiral (helical K306.5 Fabricated Branch Connections seam) welds are not permitted. Fabricated branch connections constructed by welding K305.1.2 Additional Examination. Pipe and tubing shall be fabricated in accordance with para. K328.5.4 shall have passed a 100% examination for longitudinal and examined in accordance with para. K341.4. defects in accordance with Table K305.1.2.This examina- tion is in addition to acceptance tests required by the K307 VALVES AND SPECIALTY COMPONENTS material specification. The following requirements for valves shall also be K305.1.3 Heat Treatment. Heat treatment, if met,as applicable,by other pressure-containing piping required, shall be in accordance with para. K331. components, such as traps, strainers, and separators. K305.1.4 Unlisted Pipe and Tubing. Unlisted pipe K307.1 General and tubing may be used only in accordance with Pressure design of unlisted valves shall be qualified para. K302.2.3. as required by para. K304.7.2. K306 FITTINGS, BENDS, AND BRANCH K308 FLANGES, BLANKS, FLANGE FACINGS, AND CONNECTIONS GASKETS Pipe and other materials used in fittings,bends, and K308.1 General branch connections shall be suitable for the manufactur- Pressure design of unlisted flanges shall be verified ing or fabrication process and otherwise suitable for the in accordance with para. K304.5.1 or qualified as service. required by para. K304.7.2.