Download NBIC 2013-Part 3 Repair and Alteration PDF

TitleNBIC 2013-Part 3 Repair and Alteration
File Size31.5 MB
Total Pages301
Table of Contents
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Document Text Contents
Page 1

CPhromngam
File Attachment
Replacement part fab by R certificate Holder.png

CPhromngam
Oval

CPhromngam
Sticky Note
Fabricate welded part by R cert holder (with out U-certificate is not allow)


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File Attachment
98-27.png


CPhromngam
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Interpretation 98-14.pdf

Page 2

ANSliNEHi!3 NATIONAL SOAR.O INSPECTION COOE 2013

PART 3, REPAIRS AND ALTERATIONS

AI! charts, graphs, tables, and other criteria that have been reprinted from the
ASME Boiler and Pressure Vessel Code, Sections I, IV, VIII, and X, are used

with the permission of the American Society of Mechanical Engineers. All
Rights Reserved.

PART :3 ... _ ... REPAIRS ANO ALTERATIONS I i

Page 150

NATIONAL BOARD INSPECTION CODE 1201:3

S1.2.9.1 FLUE AND TUBE RE-ENDING

a) Each boiler tube or flue that is repaired by welding is limited to not more than three circumferential welded
joints.

b) Re-ending is permitted provided, the thickness of the tube or flue to be re-ended is not less than 90% of
that required by NBle Part 3, Table 51.2.9.

c) Re-end pieces shall be new material and meet the thickness requirements of NBle Part 3, Table S1.2.9.

S1.2.9.2 ARCH TUBES

a) Arch tubes that are damaged or reduced to less than minimum required wall thickness shall be replaced
in entirety by new one-piece arch tubes. Welded repairs or partial replacement is not permitted. Damage
includes defects such as bulging, bums, and cracks.

b) When arch tubes are installed by rolling, the tube end shall project through the firebox sheet not less than
1/4 in. (6 mm) nor more than 314 in. (19 mm) before flaring. At a minimum, the tube shall be expanded
and flared at least 1/8 in. (3 mm) greater than the diameter of the tube hole. Additionally, the tube may be
beaded and/or seal welded provided the throat of the seal weld is not more than 3/8 in. (10 mm), and the
tube is finished rolled after welding.

c) An arch tube installed by welding shall be considered a welded nozzle. Some acceptable weld joints are
shown in NBle Part 3, Figure S1.2.9.2-a (Ref. ASME Section I, Part PW 16.1.)

d) A change in tube attachment from rolled-to-welded or welded-to-rolled shall be considered an alteration.

FIGURE 81.2.9.2-a
Welded Installation of Arch Tube

but not less
than 1/4 in. (6 mm)

t = thickness of vessel shell or head, in.

t.
t.. but not less than
1/4 in. (6 mm)

t = thickness of nozzle wall, in.
( = dimension of partial penetration attachment welds (fillet, single bevel, or single J), measured as shown

in ASME Section I, Figure PW-16.1, in.
to = not less than the smaller of 1/4 in. (6 mm) or 0.7 t..m (inside comer welds may be further limited by a

lesser length of projection of the nozzle wall beyond the inside face of the vessel wall)
tm;n = the smaller of 3/4 in. (19 mm) or the thickness of either of the weld parts joined by a fillet, single bevel,

or single J-weld, in.

pART :3 - REPAIRS AND ALTERATIONS

Page 151

20131 NATIONAL BOARD INSPECTION CODE

FIGURE S1.2.9.2-b
Example of Arch Tube Installation

ARCH TUBES

ARCH 'TUDE END ARCH TUBE BN.J) All~.H; TUBS END
lOLLED A.."f'D FLARBD ROLLED AND BEADED ROLLED .AND

SBA~' IlELDBD

S1.2.9.3 TUBE WALL THICKNESS FOR ARCH TUBES

The minimum wall thickness of replacement arch tubes shall be as shown in Table 51.2.9.3.

TABLE S1.2.9.3

'-t=-t~~3 i~.~~::::;)':~~::=~:l=::::;~E::::~~-'-
I gage (BWG)

-M~;~ than 3-i-~~-(r5~-;)--r7 Bi~;:;;ingham wire-
",,~,I.? tO~!!:I:,,~~,~,~,,~~>',,~I.?_J,,~~~~_~~~'?>,

S1.2.9.4 THERMIC SIPHONS

a) For repairs to Siphon knuckles see Repair of Firebox and Tubesheet Knuckles, and NBIC Part 3, Figures
51.2.11.5-a and 51.2.11.5-b.

b) All weld repairs to the unstayed sections of the Siphon neck and body shall be radiographically examined.

Page 300

Thermal Expansion -
Part 1 (3.7.9); Part 2 (2.2.12.8), (2.4.4), (2.4.7)

Thinning-
Part 2 (SS.3)

Ton Tanks (DOT) -
Part 2 (S6.1S)

Training-
Part 3 (S7.11)

Transport Tanks (DOn -
Part 3 (Supplement 6)

Tubes-
Part 2 (2.2.12.2), (2.2.12.9), (S2.11), (S2.13);

Part 3 (3.3.3), (3.3.4.3(d», (3.3.4.S),
(S1.2.9), (S2.13), (S3.3)

Tubesheet-
Part 2 (S2.11); Part 3 (S1.2.11.6), (S2.13.12)

Thermal Fluid Heaters -
Part 2 (2.2.12.7)

Threaded Connections/Openings -
Part 1 (3.9.1.2); Part 2 (2.3.4), (2.3.6.2),

(S2.9); Part 3 (S1.2.12.2)

Threaded Stays, Bolts, Studs -
Part 3 (S1.2.2), (S1.2.7), (S2.13.1), (S2.13.2),

(S2.13.S)

Throttle and Throttle Valves -
Part 2 (S1.4.2), (S2.14)

Try-Cocks-
Part 2 (S2.8.3), (S2.7.1), (S2.8)

Transport Tanks (DOn -
Part 2 (Supplement 6)

u_ ............................. _._ ................. _ ....... _ ........ _ ..................... __ ................... _._
Ultrasonic Examination -
Part 2 (4.2.4), (S2.S.3), (S2.6.2);

Part 3 (3.3.4.2), (3.3.4.3)

PART :3

NATIONAL BOARD INSPECTION CODE 12013

Uniform Corrosion -
Part 2 (3.3.1), (3.3.3), (S.3.7), (S1.4.2), (S2.11),

(SS.3.3), (S6.6), (S7.8.S)

Units of Measurement -
Part 1, Part 2, and Part 3 (Introduction)

Unstayed Areas -
Part 2 (51.4.1); Part 3 (S2.13.9), (51.2.10)

v
"VR" Symbol -
Part 1 and Part 2 (Introduction);

Part 3 (Introduction), (1.7),
(Supplement 9)

Vacuum Test-
Part 3 (4.4.1 [d]); Part 2 (S6.13.9)

Vaporizers -
Part 2 (2.2.12.3)

Valves-
Part 1 (2.S.1.4), (3.7.S), (3.7.7), (S.2.4);

Part 2 (2.3.6.4), (2.4.S), (S1.4.2), (S2.9),
(56.4.7.4)

Ventilation Air-
Part 1 (2.5.4), (3.5.4)

Verification Testing (PRDs)-
Part 3 (1.7.5.5)

Vibration-
Part 2 (2.2.12.4), (2.2.12.7), (2.3.6.2)

Visual Examination -
Part 2 (4.2.1), (52.5.2), (S4.4), (S6.13),

(S6.4.7), (S6.15.2); Part 3 (3.3.2), (S.4.2),
(S4.12), (S6.7.1), (S7.14.2), (S7.14.3)

Volume (Feedwater) -
Part 1 (2.5.1.1)

REPAIRS AND ALTERATiONS SECTION 1 1 283

Page 301

20131 NATIONAL BOARD INSPECTION CODE

Wasted Areas -
Part 3 (3.3.2), (3.3.4.3), (82.13), (82.13.9.1)

Water Column -
Part 1 (3.8.1.3); Part 2 (2.2.10.3), (2.2.10.4),

(81.4.2), (82.11)

Water-Gage Connection -
Part 3 (81.2.13.1); Part 2 (81.4.2), (82.13),

(82.14)

Water-Gage Glass -
Part 1 (3.8.1.2)

Part 2 - (2.2.10.5), (81.4.2), (82.13),
(82.14)

Water Heaters -
Part 1 (3.2.3), (3.7.5.2), (3.7.7.2), (3.8.3);

Part 2 (2.5.8)

Waterside Deposits -
Part 2 (2.2.9), (81.4.2), (82.13.4), (86.6.3.1)

Welds,
Inspection -
Part 2; Part 3 (82.8)
Repairs-
Part 3

Welding-
Part 1 (5.2.8); Part 3 (2.2), (81.1.2), (81.2.5),

(82.9), (86.8), (87.3), (87.12)

Welding Procedures -
Part 3 (2.2.1), (86.8.1), (87.12.1)

Welders Continuity -
Part 3 (2.2.6), (86.8.6), (87.12.6)

Welders Identification -
Part 3 (2.2.5), (87.12.5), (86.8.5)

Welding Methods -
Part 3 (2.5.3.1), (2.5.3.2), (2.5.3.3), (2.5.3.4),

(2.5.3.5), (82.13)

Welding Records -
Part 3 (2.2.4), (86.8.4), (87.12.4)

Wrapper Sheet-
Part 2 (82.11)

x

Yankee Dryers -
Part 2 and Part 3 (8upplement 5)

284 SECTION 1 1 PART 3 - REPAIRS ANO ALTERATIONS

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