SUBSECTION B

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UW-16 MINIMUM REQUIREMENTS FOR ATTACHMENT WELDS AT OPENINGS. Fion Zhang/ Charlie Chong UW-16
FIG. UW-16.1 SOME ACCEPTABLE TYPES OF WELDED NOZZLES AND OTHER CONNECTIONS TO SHELLS, HEADS, ETC. UW-16.1 sketches (i), (j), (k), and (l). Fion Zhang/ Charlie Chong UW-16
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SUBSECTION B REQUIREMENTS PERTAININ
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PART UW Overview Fion Zhang/ Charli
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Type number Joint description Limit
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UW-2 SERVICE RESTRICTIONS. Fion Zha
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UW-2 SERVICE RESTRICTIONS Class a b
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UW-2 Class a Description. Vessels a
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WELDED JOINT CATEGORY ASME VIII pre
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• Cat “A” includes all longit
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Non-hemispherical head Critical Cir
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• Cat B includes most circumferen
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• Cat D includes welded joints co
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The main content relates to two are
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(d) Except when the longitudinal jo
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staggered or separated by a distanc
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Based on the ASME Code requirement
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Fion Zhang/ Charlie Chong UW-11
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Item 3: All butt welds in an unfire
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RT Item Note Joint Efficiency (Type
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UCS-57 RADIOGRAPHIC EXAMINATION In
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UW-11(a2) all butt welds in vessels
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UW-11 RADIOGRAPHIC AND ULTRASONIC E
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UW-11(a) Full Radiography (1) all b
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Except as required by UHT-57(a), Ca
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Any vessel with welded joint exceed
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in which case: (a)Category A and B
Page 51 and 52: (7) ultrasonic examination in accor
Page 53 and 54: Full Radiography means UW-11 (a-5):
Page 55 and 56: Radiographic examination is not req
Page 57 and 58: UW-11(d,e,f) Special welding proces
Page 59 and 60: http://www.mechanicalengine eringbl
Page 61 and 62: Fion Zhang/ Charlie Chong UW-11
Page 63 and 64: UW-12 JOINT EFFICIENCIES Fion Zhang
Page 65 and 66: Summary of weld types: Type 1: Full
Page 67 and 68: Type number Joint description Limit
Page 71 and 72: Summary Maximum Weld Joint Efficien
Page 73 and 74: Butt joints as attained by double-w
Page 75 and 76: TABLE UW-12 MAXIMUM ALLOWABLE JOINT
Page 77 and 78: Weld type number 1: Single “V”
Page 85 and 86: GENERAL NOTES: (a) The single facto
Page 87 and 88: UW12(d) Seamless vessel sections or
Page 89 and 90: UW12(d) • all Category A welds ar
Page 91 and 92: Q. Given a seamless head or shell s
Page 93 and 94: Hemispherical head • 100% RT UW-5
Page 101: Fion Zhang/ Charlie Chong UW-12
Page 105 and 106: t c = not less than the smaller of
Page 107 and 108: Exercise: Problem: A nozzle is bein
Page 109 and 110: FIG. UW-16.1 SOME ACCEPTABLE TYPES
Page 115 and 116: • t = nominal thickness of vessel
Page 117 and 118: where it meets a set-on nozzle, by
Page 119 and 120: Q3. ASME VIII section UW-16 (c) fig
Page 121 and 122: Q5. ASME VIII section UW-16 (d)(1)
Page 123 and 124: UW-40(f ) The term nominal thicknes
Page 125 and 126: UW-40(a), the soak band shall conta
Page 127 and 128: fillet welds, the nominal thickness
Page 129 and 130: The nominal thickness 6. When a wel
Page 131 and 132: Mr. “t” the nominal thickness (
Page 133 and 134: Mr. “t” the nominal thickness e
Page 135 and 136: UW-50 NONDESTRUCTIVE EXAMINATION OF
Page 137 and 138: UW-51 RADIOGRAPHIC EXAMINATION OF W
Page 139 and 140: 10-13 RECORDS RETENTION a) The Manu
Page 141 and 142: (c) For manufacturers of UM stamped
Page 143 and 144: When do you need full RT Fion Zhang
Page 145 and 146: UW-11, a(2). All materials; welded
Page 147 and 148: UW-11 (a3) all butt welds in the sh
Page 149 and 150: UW-11 (a6) all butt welds joined by
Page 151 and 152: UW-51 (a2) A written radiographic e
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Demonstration of (1) density and (2
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Demonstration of (1) density and (2
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• Repaired welding, at the option
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Unacceptable imperfections UW-51 (b
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UW-51 (b3) any group of aligned ind
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UW-51 (b2) http://www.ndted.org/Edu
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In-progress RT for quality improvem
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This rule also addresses smaller, o
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UW-52 (b2) For each increment of we
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Welder-C Welder-B Welder-A Under co
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UW-52 (b3) Each spot examination sh
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UW-52 (b4) Radiographs required at
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UW-52 (b4) Radiographs required at
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UW-52 (c) Standards for Spot Radiog
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Spot radiographs may be retained or
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UW-51 (b2) t = the thickness of the
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UW-52(d) Evaluation and Retests UW-
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UW-52(d) Evaluation and Retests (1)
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Fion Zhang/ Charlie Chong
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SUBSECTION B

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