SUBSECTION B

More documents

Recommendations

Info

UW-52(d) Evaluation and Retests Spot RT unacceptable, 2 additional spots in the same increment Spot RT acceptable Both Spot RT acceptable Any of the Spot RT unacceptable the entire weld increment represented the radiographic testing is acceptable the entire weld increment represented by the three radiographs is unacceptable Fion Zhang/ Charlie Chong UW-52
UW-52(d) Evaluation and Retests UW-52(d2b) If either of the two additional spots examined shows welding which does not comply with the minimum quality requirements of (c)(1) or (c)(2) above, the entire increment of weld represented shall be rejected. 1. The entire rejected weld shall be removed and the joint shall be rewelded or, at the fabricator’s option, 2. the entire increment of weld represented shall be completely radiographed and only defects need be corrected. UW-52(d2c) Repair welding shall be performed using a qualified procedure and in a manner acceptable to the Inspector. The rewelded joint, or the weld repaired areas, shall be spot radiographically examined at one location in accordance with the foregoing requirements of UW-52. Fion Zhang/ Charlie Chong UW-52
Page 1 and 2:
SUBSECTION B REQUIREMENTS PERTAININ
Page 3 and 4:
PART UW Overview Fion Zhang/ Charli
Page 5 and 6:
Type number Joint description Limit
Page 7 and 8:
UW-2 SERVICE RESTRICTIONS. Fion Zha
Page 9 and 10:
UW-2 SERVICE RESTRICTIONS Class a b
Page 11 and 12:
UW-2 Class a Description. Vessels a
Page 13 and 14:
WELDED JOINT CATEGORY ASME VIII pre
Page 15 and 16:
• Cat “A” includes all longit
Page 17 and 18:
Non-hemispherical head Critical Cir
Page 19 and 20:
• Cat B includes most circumferen
Page 21 and 22:
• Cat D includes welded joints co
Page 23 and 24:
The main content relates to two are
Page 25 and 26:
(d) Except when the longitudinal jo
Page 27 and 28:
staggered or separated by a distanc
Page 29 and 30:
Based on the ASME Code requirement
Page 31 and 32:
Fion Zhang/ Charlie Chong UW-11
Page 33 and 34:
Item 3: All butt welds in an unfire
Page 35 and 36:
RT Item Note Joint Efficiency (Type
Page 37 and 38:
UCS-57 RADIOGRAPHIC EXAMINATION In
Page 39 and 40:
UW-11(a2) all butt welds in vessels
Page 41 and 42:
UW-11 RADIOGRAPHIC AND ULTRASONIC E
Page 43 and 44:
UW-11(a) Full Radiography (1) all b
Page 45 and 46:
Except as required by UHT-57(a), Ca
Page 47 and 48:
Any vessel with welded joint exceed
Page 49 and 50:
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:
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:
Page 69 and 70:
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 79 and 80:
Page 81 and 82:
Page 83 and 84:
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 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
FIG. UW-16.1 SOME ACCEPTABLE TYPES
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 111 and 112:
Page 113 and 114:
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
Page 153 and 154: Demonstration of (1) density and (2
Page 155 and 156: Demonstration of (1) density and (2
Page 157 and 158: • Repaired welding, at the option
Page 159 and 160: Unacceptable imperfections UW-51 (b
Page 165 and 166: UW-51 (b3) any group of aligned ind
Page 169 and 170: UW-51 (b2) http://www.ndted.org/Edu
Page 171 and 172: In-progress RT for quality improvem
Page 173 and 174: This rule also addresses smaller, o
Page 175 and 176: UW-52 (b2) For each increment of we
Page 177 and 178: Welder-C Welder-B Welder-A Under co
Page 179 and 180: UW-52 (b3) Each spot examination sh
Page 181 and 182: UW-52 (b4) Radiographs required at
Page 183 and 184: UW-52 (b4) Radiographs required at
Page 185 and 186: UW-52 (c) Standards for Spot Radiog
Page 187 and 188: Spot radiographs may be retained or
Page 189: UW-51 (b2) t = the thickness of the
Page 193 and 194: UW-52(d) Evaluation and Retests (1)
Page 195 and 196: Fion Zhang/ Charlie Chong
show all

SUBSECTION B

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?