flange fitters hand book
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FLANGE FITTERS’
HANDBOOK
2
OBJECTIVE• To make leak-free flange connections
SCOPE• The process of making flange connections.• Type of connections - pipe to pipe, pipe to
equipment, instrument to pipe, and vessel trim flange connections including blind flange connections
• The items involved - gaskets, studs, stud bolts, nuts.
• Preparatory actions - cleaning, lubrication, alignment, tightening.
3
HEALTH AND SAFETY – Minimize the risks of following activities which are typical for making flanged connections.• Working at height• Working under scaffolding• Working on scaffolding• Working with lifting tools• Rigging pipe; supporting pipe, components and equipment• Large/heavy tool handling• Use of long handled or extended tools• Working with cleaning agents and lubricants• Foreign/falling objects, fragments, debris, and splinters• Working in high temperatures, dry environment, wind and
dust• Working near energized electrical units.• Working near hazardous substances (Hydrocarbons,
chemicals) and near construction activities or commissioning activities
• Working under time pressure
4
REQUIRED PPE (MINIMUM)• Safety shoes• Cover all with long sleeve shirt• Safety glasses/goggles• Safety hard hat• Working gloves• Hearing protection, when applicableSAFETY GOAL• Return home safe and sound. Supervisory staff have a special
responsibility to ensure the site is a safe place to work and to ensure that everyone is working in a safe manner.
TIGHTNESS GOAL – To achieve leak-free joints, supervisor must ensure
• Fitters are qualified• Adequate tools and materials are arranged• Calibrated torque wrenches are provided• Whether the flange requires hydraulic tensioning as per table• Fitter completes the flange protocol
5
GENERAL CHECK POINTS BEFORE MAKING FLANGE CONNECTIONS
• Line size correct• Material correct• Flange rating correct• Stress relieving complete• Welding complete• Installation straight and plumb• Line slopes as per drawing• NDT complete• Flange facings protected against mechanical damage and
corrosion
6
FLANGES• Flange type, material, rating correct against ISOs and
MTOs.• Flange mating surfaces must be cleaned where required
before installation of gasket. Remove previous gasket residue and substances such as dirt, oil, and grease. Also remove preservative coatings.
• Use a wire brush for cleaning. The brush must be compatible with the flange material, so do not use carbon steel brush on SS flanges. Brush gently in the direction of the serrated rings of the gasket contact area. Make sure the serrated rings profile is maintained.
7
FLANGES• Inspect flange gasket seating areas on scratches, dents,
scoring, and other damage. Minor damage may be acceptable – consult Field Engineering when in doubt.
• General guideline: Damage (scratch, pit, or pitted area) shall not be deeper than serration depth, and under 30% of the gasket contact area width, measured in radial direction. If the damages are outside above acceptance criteria, the flange has to be replaced or re-machined.
• The nut seating surface must be flat and must provide a low friction, full contact area.
8
GASKETS, BOLTS AND NUTS• Gaskets have been selected to make a leak-free flange
connection throughout the range of expected operating pressures and temperatures.
• Correct type, material – check color code of gaskets• Correct gasket thickness and pressure rating• Check stud bolt: materials, length, diameter, against ISOs
and MTOs.• Check threads of bolts are undamaged.• Threads of stud bolts and nuts must be cleaned with a
suitable solvent.• Threads of stud bolts and nuts must be coated with an
approved lubricant before installation.
LUBRICANTS• As lubricant only use Molykote 1000• Lubricate “working” surfaces – liberally coat all internal
and external thread surfaces and nut/washer faces
9
ATTENTION POINTS – DURING FLANGE INSTALLATION
Follow the tightening sequence as below.• Install 50% of the stud bolts and nuts, finger-tight and
gently tighten the rest of the stud bolts• Hand-tighten all nuts.• Bolts shall be tightened in a controlled sequence as
follows. 1st pass: 30% of Specified Torque Value 2nd pass: 60% of Specified Torque Value 3rd pass: 100% of Specified Torque Value Final pass: Check at 100% of Specified Torque Value
• Follow the tightening sequence as per table with bolts numbered clockwise around the flange.
10
ATTENTION POINTS – DURING FLANGE INSTALLATION
• Flange face alignment must be within 1.5 mm per 305 mm pipe diameter. On pipe to pipe flanges, loosen adjacent pipe supports and adjust to achieve proper alignment.
• Note: bolting hardware shall be installed and nuts tightened sufficiently to remove slack prior to measuring alignment.
11
ATTENTION POINTS – DURING FLANGE INSTALLATION
• Never adjust the equipment to achieve flange alignment.• Alignment of flange studs, bolts or holes must be within
1.5 mm as measured along the bolt circle. Generally, if the bolt/stud slips in the flange holes easily, the alignment is satisfactory.
• Measure gaps between the flanges around the circumference to verify parallelism. Measure at four equally spaced locations for flanges up to 8 bolts; at every other stud bolt for flanges with more than 8 bolts and at 16 equally spaced locations for flanges with more than 32 stud bolts.
12
ATTENTION POINTS – DURING FLANGE INSTALLATION
• When performing pipe to equipment fit-up, only the pipe shall be adjusted. Never adjust the equipment.
• Stud bolts length must protrude two (2) to three (3) threads beyond the nut.
• Stud bolts with diameter over 1-1/8” must have one and a half (1.5) full stud diameter beyond the nut to allow tensioning (install stud bolt with the stud marking always visible). In case of equipment flanges the stud bolt must protrude 1.5 times full stud diameter at the end pointing away form the equipment.
13
ATTENTION POINTS – DURING FLANGE INSTALLATION
• Never use tape to fix gasket except to centre large or vertically oriented gaskets, where an engineering approved adhesive (e.g. Super 77 by 3M) may be used
• Never re-use a gasket. Quarantine used gaskets immediately away from unused gaskets
• Check for presence of double and missing gaskets.• Never cut or deform gasket to fit a flange.• Only use stud bolts and nuts that are clearly marked with
material grade.• Use temporary gasket only for temporary joints – that is
joints for flushing and hydro testing. Temporary gaskets must be painted BLUE on the entire outer rim to ensure detection at MC punch.
14
ATTENTION POINTS – AFTER FLANGE INSTALLATION
• Stud bolts must protrude 2 threads each nut• After hydraulic tensioning completion, protruding 1.5 D
thread ends greased and covered by plastic caps.• Make sure all stud bolts are in and tight and specified
torque values have been achieved.• Clear identification by means of Tag to indicate that
torquing or tensioning has been completed.• Flange Protocol is signed by Fitter, Supervisor and
Inspector.
15
GENERAL ATTENTION POINTS
• Branches located correctly• Branches reinforced• Weep holes in reinforcing pads and trunnion supports• High point vents installed• Low point drains installed• Reducers located correctly• Reducer type correct• Blinds installed• Cold spring or pre-spring installed as per drawing• Clearance for thermal expansion/contraction OK• Spools, fittings and piping items kept internally clean and
closed – openings capped unless they are worked on.• Flange facings protected against mechanical damage and
corrosion.
16
VALVES
• Flow direction correct [uni-flow valves, special attention for equipment (pump, SRVs) isolation]
• Item code correct• Stud bolts and nuts correct• Chain wheel installed• Extension installed• Stem orientated properly• Drain and flush connections installed• Check for rising stem obstructions. Are protectors
required?• Check specifications for by-pass around valves (pump
check valves, stem lines, etc.).• Control valves and plug cocks lubricated• During flushing all valves to be replaced by Temporary
Spools• During testing Special valves to be replaced by Temporary
Spools
17
PIPE SUPPORTS
• Field supports installed.• Sufficient supports, adequately spaced• Correct supports (stops/guides for restricted axial, lateral
and up-lift movements).• Anchors installed.• Proper shoes installed and welded.• Trunnion supports provided with telltale or weep hole.• Spring hangers/supports properly installed.
18
PIPE SUPPORTS
• Check insulated lines for shoes, right height? Welded properly? Ensure proper positioning in relation to support base to allow for expansion.
• Alloy lines must be checked carefully. Any additionally welded supports may require stress relieving. Clamp types may be used.
• Large diameter lines must be checked carefully. Gas lines and supports not designed for hydrotest may require temporary supports, or special permission for pneumatic test.
• Ensure small diameter take-offs like vents, drains are properly fixed/supported.
• Check lines at pumps and other (rotating) equipment carefully for undue stresses on equipment flanges
19
SCREWED CONNECTIONS AND SEAL WELDING
• Screwed connections are only allowed in certain utility services (e.g., cooling/service water, tool/instrument air).
• Seal welding is not permitted.• Use of tape not permitted.• Threading compound may be used when approved by
procedure.• Check for presence (strictly prohibited for
process/hydrocarbon services) of screwed connections at package units and valves, etc.
INSULATING GASKET KITS
• Parts of insulating kits must never be mixed.• Ensure no conducting paths for the two mating flanges• Never use pneumatic impact wrenches
20
INSULATION AND TRACING
• Insulation support clips installed.• Clearances adequate for insulation• Insulation well sealed, no ingress of water, electrical
conductivity of insulation expansion joints secured?• Insulation thickness correct?• Electric tracing installed.• Correct numbers of tracing.
21
INSULATION AND TRACING
• Tracer correct size.• Tracer length correct.• Steam/condensate stations well arranged tracer loop
identification clear on station valves? • Trap (steam) detail correct.• Leak nipples in reinforcing pads/protrude insulation.• Earthing studs on equipment / structure accessible.• Insulation details at pipe penetrations – grating, sheeting
22
INSTRUMENTS
• PSVs to be certified (pop and leak test max 3 month prior to actual use) and sealed (correct item number/set pressure).
• Bellow type PSVs provided with screwed-in bug screen in body vent hole.
• Correct CVs installed after flushing (pipe spool during hydro testing & flushing)
• Meter runs properly installed (jacking screws included).• Valves at meter runs installed.• Pressure gauge valves installed.• Temperature connections properly oriented.• Sample connections installed.• Weep hole in outlet pipe (nipple protrude through
insulation).
23
ALLOY LINES• Stress relieving completed.• Check color coding.• Valves and gaskets must be checked in detail for
compliance to specs.
HYDROTESTING CRA AND SS LINES• Ensure testing water is clean and contains max. 2 ppm Cl.• Arrange for draining and drying ASAP after test
completion.
24
B7
2H
BOLT AND NUT MARKING
SPIRAL WOUND GASKET
25
COMB PROFILE GASKET
METALLIC RING TYPE GASKET
26
Following table is given as a sample reference for flange marking.
Standard-Material-Size-Class-schedule-Heat no-(groove type)-Mesc No
Standard Material Size Class Schedule or wall thickness
Groove type (For RTJ flanges)
MESC No
ASME B16.5
MSSSP 44 API 6A
A105 etc..,
½”; 1” etc..,
150; 300; etc..,
Sch 40; sch XXX; etc..,
R24;34 etc..,; BX151;BX153 etc..,
117 766286.788
FLANGE MARKING
27
Carbon steel Flanges ASTM A694-F65ASTM A105MSS-SP-44 Gr. F65MSS-SP-44 Gr. F60
Low Temperature Carbon Steel FlangesASTM A350-LF2.
Stainless Steel FlangesASTM A182-F316ASTM A182 F44
Carbon steel Flanges with CRA claddingMSS-SP-44 Gr. F65 + CLAD UNS N06625 (Alloy 625 cladding)
Low Temperature Carbon Steel Flanges with CRA claddingASTM A350-LF2 + CLAD UNS N08825 (Alloy 825 cladding)A350-LF2 + CLAD UNS N06625 (Alloy 625 cladding)
Corrosion Ressistant Alloy (CRA) flangesAlloy 825 - ASTM B564 UNS N06625 (Alloy 625 solid)Alloy 625 - ASTM B564 UNS N08825 (Alloy 825 solid)
FLANGE MATERIAL STANDARD AND GRADES AT HARWEEL
28
Stud bolts & Nuts Colour
ASTM A193 Grade B7 White
ASTM A193 Grade B7M Lemon
ASTM A193 Grade B8 None
ASTM A 320 Gr.L 7 None
ASTM A 320 Gr.L 7M Currant Red
ASTM A 453 Gr.660 Class D UNS S66286
Green
ASTM A 637 UNS N07718 (BS381C-363)
Yellow
MATERIAL COLOR CODING
29
Gaskets Colour
Spiral wound gaskets shall be colour coded as follows
Winding
Filler/inner
Winding: SS-316 / Filler: Graphite/Outer Ring: CS/Inner Ring: SS-316 (or) 316L
Green Grey
Winding: SS-6Mo / Filler: Graphite/ Outer Ring: CS/Inner Ring: SS-6Mo
Rail Red Grey
Winding: Incoloy 825 / Filler: Graphite/ Outer Ring: CS/Inner Ring: Incoloy 825
White Grey
Winding: Inconel 625 / Filler: Graphite/ Outer Ring: CS/
Inner Ring: Inconel 625
Gold Grey
30
STUD BOLTS AND NUTS
Colour coding - Each stud bolt and nut must be marked with paint on each end, to the colour indicated in above Table. The grade stamp marks shall be provided on the heads of the stud bolt, one end of stud bolts and one side of each nut.
31
COLOUR CODING
Spiral wound gasket with SS 316 winding(winding: green, filler: grey)
32
Piping class Stud bolt color code Gasket color code
Winding material Filler material
11025X Lemon
11410X White
11430X White
11440X Lemon
11441X Lemon
11460X Lemon
11470X Yellow
11501X
13410X White
13460X
13620X
16620X WHITE
18410X White
31025X Lemon
31031X White
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
33
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
Piping class Stud bolt color code Gasket color code
Winding material Filler material
31160X White
31441X Lemon
31441Y Lemon
31460X Lemon
31470X None
31501X
33460X
33620X
36620X White
61440X Lemon
61441X Lemon
61460X Lemon
61480X
61501X
63620X
34
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
Piping class Stud bolt color code Gasket color code
Winding material Filler material
66520X
66620X White
66620Y White
91025X Lemon
91176X
91440X Lemon
91441X Lemon
91480X
91501X
91501Y
93460X
93620X
96520X
96620X White
96620Y White
35
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
Piping class Stud bolt color code Gasket color code
Winding material Filler material
151025X Lemon
151521X Lemon White
251485X Lemon
251521X White White
501605X - Hub connector Hub connector
506520X Yellow RTJ gasket (R) RTJ gasket (R)
506620X Yellow RTJ gasket (r) RTJ gasket (R)
1001485X Yellow RTJ gasket (BX) RTJ gasket (BX)
1001605X - Hub connector Hub connector
1006520X Yellow RTJ gasket (BX) RTJ gasket (BX)
13021X
33021X
63460X
66520S
66620S White
36
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
Piping class Stud bolt color code Gasket color code
Winding material Filler material
63620S
93620S
96520S
96620S White
153460X
153620X
156520X Yellow
256520X Yellow
1006520Y Yellow RTJ gasket (BX) RTJ gasket (BX)
61440I
61440Z
61460P Lemon
91441P
91441Z White
96620Z White
37
Stud bolt & gasket color code by piping class (reference of piping classes from HWL-0-0003-401-Rev-C)
Piping class Stud bolt color code Gasket color code
Winding material Filler material
1001440Z Yellow RTJ gasket (BX) RTJ gasket (BX)
91410X White
33410X White
93410X White
93021X
153021X
31410X White
33620S
36620S White
13460Y
151501X
31430X White
91176Y
93460Y
96620M White
18081X WHITE
38
FLANGE ALIGNMENT – ACCEPTANCE CRITERIA
K1=L1
K3=L3
K2=L2 K4=L4
UITLIJN DEFINITIES VOOR LEIDINGFLENZEN PARALEL UITLIJNING FLENZEN t /m 10 ” = MAX 0.5 mm FLENZEN van af 12 ” = MAX. 1.0 mm
HARTLIJN UITLIJNING FLENZEN t/m 3 ” = Max. 2 mm FLENZEN van af 4 ” = Max. 3mm
ALIGNMENT DEFINITIONS FOR PIPING FLANGE JOINTSPARALEL TOLERANCE;FLANGES UP TO 4” 150# (K1-K3/K2-K4) = 0.57mmFLANGES > 4” (K1-K3/K2-K4) MAX. 2.5mm/m (OD Flange)
RE Equipment PARALEL TOLERANCE;Flange OD MAX (K1-K3/K2-K4)
< 300mm 0.2mm300-600mm 0.3mm
> 600mm 0.5mm
LATERAL TOLERANCE;FLANGES UP TO 4” = MAX 2 mmFLANGES > 4” = MAX. 3 mm
SEE DEP 31.38.01.11-Gen Appendix 12
Flange alignment tolerances (additions to ASME B16.5)
39
FLANGE CONNECTING TO ROTATING EQUIPMENT (pumps, compressors, etc.)The flange face alignment check shall be performed with bolting inserted loosely, and the acceptance criteria shall be as given below:
Flange Diameter (DN)
Maximum misalignment at OD of flange
< 300 0.2mm
300 to 600 0.3mm
> 600 0.5mm Final acceptance of the rotating equipment (suction/discharge) flange alignment SHALL be witnessed by Client .
Deviation
Initial Measurement50% Torque
K1
….
K3
….
K1-K3 = …….
K2
….
K4
….
K2-K4 = …….
Final Measurement100% Torque
L1
….
L3
….
L1-L3 = MAX
MAX Value as per tables 1, 2 & 3
L2
….
L4
….
L2-L4 = MAX
40
Pre-assembled joint M (mm) Individual flange compared to design plane
Size DN
150# 300#
600# 900# 1500#
2500#
Size DN
150#
300# 600# 900#
1500#
2500#
15 0.22 0.24 0.24 0.30 0.30 0.33 15 0.16 0.17 0.17 0.21 0.21 0.24
20 0.25 0.29 0.29 0.33 0.33 0.35 20 0.17 0.21 0.21 0.23 0.23 0.25
25 0.27 0.31 0.31 0.37 0.37 0.40 25 0.19 0.22 0.22 0.26 0.26 0.28
40 0.32 0.39 0.39 0.44 0.44 0.51 40 0.22 0.27 0.27 0.31 0.31 0.36
50 0.38 0.41 0.41 0.54 0.54 0.59 50 0.27 0.29 0.29 0.38 0.38 0.42
80 0.48 0.52 0.52 0.60 0.67 0.76 80 0.34 0.37 0.37 0.43 0.47 0.54
100 0.57 0.64 0.68 0.73 0.78 0.89 100 0.40 0.45 0.48 0.52 0.55 0.63
150 0.70 0.79 0.89 0.95 0.98 1.21 150 0.49 0.56 0.63 0.67 0.70 0.85
200 0.86 0.95 1.05 1.17 1.21 1.38 200 0.61 0.67 0.74 0.83 0.85 0.98
250 1.02 1.11 1.27 1.37 1.46 1.68 250 0.72 0.79 0.90 0.97 1.03 1.19
300 1.21 1.30 1.40 1.52 1.68 1.91 300 0.85 0.92 0.99 1.08 1.19 1.35
350 1.33 1.46 1.51 1.60 1.87 350 0.94 1.03 1.07 1.13 1.32
400 1.49 1.62 1.71 1.76 2.06 400 1.06 1.14 1.21 1.25 1.46
450 1.59 1.78 1.86 1.94 2.29 450 1.12 1.26 1.31 1.39 1.62
500 1.75 1.94 2.03 2.14 2.46 500 1.23 1.37 1.44 1.52 1.74
600 2.03 2.29 2.35 2.60 2.92 600 1.44 1.62 1.66 1.84 2.07
This results in the following figures for measurements taken at the outer rim of the flange:
Maximum Flange joint miss-alignment tablesTable 1 ASME B16.5 flanges, all sizes, all ratingsMaximum flange face misalignment:For pre-assembled joint up to and including 600#, maximum difference in measured values = 2.5mm/mFor an individual flange, maximum difference to design plane = mm/m
NOTE: Blank cells indicate size rating values not standardized in ASME B16.5
41
Pre-assembled joint Individual flange compared to design plane
Size ASME B16.47, series ADN 150# 300# 600#
900#
Size ASME B16.47, series ADN 150# 300# 600#
900#
650 1.93 2.06 2.14 2.35 650 1.37 1.46 1.51 1.66
700 1.92 2.06 2.13 2.36 700 1.36 1.45 1.50 1.67
1750 1.91 2.05 2.13 2.36 750 1.35 1.45 1.50 1.67
800 1.91 2.05 2.12 2.34 800 1.35 1.45 1.50 1.65
850 1.91 2.04 2.14 2.32 850 1.35 1.44 1.51 1.64
900 1.90 2.03 2.10 2.29 900 1.35 1.44 1.49 1.62
950 1.92 2.02 950 1.36 1.43
1000 1.90 2.00 1000
1.35 1.41
1050 1.90 2.00 1050
1.34 1.41
1100 1.89 1.99 1100
1.34 1.41
1150 1.90 2.01 1150
1.34 1.42
1200 1.89 1.99 1200
1.34 1.41
1250 1.88 1.98 1250
1.33 1.40
1300 1.88 1.98 1300
1.33 1.40
1350 1.88 1.98 1350
1.33 1.40
1400 1.88 2.01 1400
1.33 1.42
1450 1.90 2.01 1450
1.34 1.42
1500 1.89 1.99 1500
1.33 1.41
NOTE: Blank cells indicate size rating values not standardized in ASME B16.47
This results in the following figures for measurements taken at the outer rim of the flange:
Table 2 ASME B16.47, series A, all sizes, larger than 600#Maximum flange face misalignment at raised face OD: For pre-assembled joint, 1.75 mmFor individual flange, maximum difference to design plane= mm
42
Pre-assembled joint Individual flange compared to design plane
Size DN
150#
300#
600# 900# SizeDN
150# 300# 600# 900#
650 2.03 2.27 2.37 2.54 650 1.44 1.60 1.68 1.79
700 2.03 2.26 2,35 2.56 700 1.43 1.60 1.66 1.81
750 2.01 2.23 2.31 2.51 750 1.42 1.58 1.63 1.78
800 2.03 2.20 2.28 2.52 800 1.44 1.56 1.62 1.78
850 2.01 2.19 2.26 2.53 850 1.42 1.55 1.60 1.79
900 2.00 2.17 2.25 2.50 900 1.41 1.54 1.59 1.77
950 2.02 1.99 950 1.43 1.41
1000 2.01 2.00 1000
1.42 1.41
1050 1.97 1.98 1050
1.40 1.40
1100 1.97 1.98 1100
1.40 1.40
1150 1.96 1.99 1150
1.39 1.41
1200 1.95 1.97 1200
1.38 1.39
1250 1.95 1.97 1250
1.38 1.39
1300 1.95 1.96 1300
1.38 1.39
1350 1.95 1.98 1350
1.38 1.40
1400 1.94 1.97 1400
1.37 1.39
1450 1.94 1.95 1450
1.37 1.38
1500 1.94 1.95 1500
1.37 1.38
Table 3 ASME B16.47 flanges, series B, all sizes, larger than 600#Maximum flange face misalignment at raised face OD For pre-assembled joint, 1.75mm For individual flange, maximum difference to design-plane = mm
This results in the following figures for measurements taken at the outer rim of the flange:
43
Pre-assembled joint Individual flange compared to design plane
Size DN
150#
300#
600# 900# SizeDN
150# 300# 600# 900#
650 2.03 2.27 2.37 2.54 650 1.44 1.60 1.68 1.79
700 2.03 2.26 2,35 2.56 700 1.43 1.60 1.66 1.81
750 2.01 2.23 2.31 2.51 750 1.42 1.58 1.63 1.78
800 2.03 2.20 2.28 2.52 800 1.44 1.56 1.62 1.78
850 2.01 2.19 2.26 2.53 850 1.42 1.55 1.60 1.79
900 2.00 2.17 2.25 2.50 900 1.41 1.54 1.59 1.77
950 2.02 1.99 950 1.43 1.41
1000 2.01 2.00 1000
1.42 1.41
1050 1.97 1.98 1050
1.40 1.40
1100 1.97 1.98 1100
1.40 1.40
1150 1.96 1.99 1150
1.39 1.41
1200 1.95 1.97 1200
1.38 1.39
1250 1.95 1.97 1250
1.38 1.39
1300 1.95 1.96 1300
1.38 1.39
1350 1.95 1.98 1350
1.38 1.40
1400 1.94 1.97 1400
1.37 1.39
1450 1.94 1.95 1450
1.37 1.38
1500 1.94 1.95 1500
1.37 1.38
Table 3 ASME B16.47 flanges, series B, all sizes, larger than 600#Maximum flange face misalignment at raised face OD For pre-assembled joint, 1.75mm For individual flange, maximum difference to design-plane = mm
This results in the following figures for measurements taken at the outer rim of the flange:
Slide containing torque values to be added
44
Pre-assembled joint Individual flange compared to design plane
Size DN
150#
300#
600# 900# SizeDN
150# 300# 600# 900#
650 2.03 2.27 2.37 2.54 650 1.44 1.60 1.68 1.79
700 2.03 2.26 2,35 2.56 700 1.43 1.60 1.66 1.81
750 2.01 2.23 2.31 2.51 750 1.42 1.58 1.63 1.78
800 2.03 2.20 2.28 2.52 800 1.44 1.56 1.62 1.78
850 2.01 2.19 2.26 2.53 850 1.42 1.55 1.60 1.79
900 2.00 2.17 2.25 2.50 900 1.41 1.54 1.59 1.77
950 2.02 1.99 950 1.43 1.41
1000 2.01 2.00 1000
1.42 1.41
1050 1.97 1.98 1050
1.40 1.40
1100 1.97 1.98 1100
1.40 1.40
1150 1.96 1.99 1150
1.39 1.41
1200 1.95 1.97 1200
1.38 1.39
1250 1.95 1.97 1250
1.38 1.39
1300 1.95 1.96 1300
1.38 1.39
1350 1.95 1.98 1350
1.38 1.40
1400 1.94 1.97 1400
1.37 1.39
1450 1.94 1.95 1450
1.37 1.38
1500 1.94 1.95 1500
1.37 1.38
Table 3 ASME B16.47 flanges, series B, all sizes, larger than 600#Maximum flange face misalignment at raised face OD For pre-assembled joint, 1.75mm For individual flange, maximum difference to design-plane = mm
This results in the following figures for measurements taken at the outer rim of the flange:
Slide containing torque values to be added
45
Pre-assembled joint Individual flange compared to design plane
Size DN
150#
300#
600# 900# SizeDN
150# 300# 600# 900#
650 2.03 2.27 2.37 2.54 650 1.44 1.60 1.68 1.79
700 2.03 2.26 2,35 2.56 700 1.43 1.60 1.66 1.81
750 2.01 2.23 2.31 2.51 750 1.42 1.58 1.63 1.78
800 2.03 2.20 2.28 2.52 800 1.44 1.56 1.62 1.78
850 2.01 2.19 2.26 2.53 850 1.42 1.55 1.60 1.79
900 2.00 2.17 2.25 2.50 900 1.41 1.54 1.59 1.77
950 2.02 1.99 950 1.43 1.41
1000 2.01 2.00 1000
1.42 1.41
1050 1.97 1.98 1050
1.40 1.40
1100 1.97 1.98 1100
1.40 1.40
1150 1.96 1.99 1150
1.39 1.41
1200 1.95 1.97 1200
1.38 1.39
1250 1.95 1.97 1250
1.38 1.39
1300 1.95 1.96 1300
1.38 1.39
1350 1.95 1.98 1350
1.38 1.40
1400 1.94 1.97 1400
1.37 1.39
1450 1.94 1.95 1450
1.37 1.38
1500 1.94 1.95 1500
1.37 1.38
Table 3 ASME B16.47 flanges, series B, all sizes, larger than 600#Maximum flange face misalignment at raised face OD For pre-assembled joint, 1.75mm For individual flange, maximum difference to design-plane = mm
This results in the following figures for measurements taken at the outer rim of the flange:
Slide containing torque values to be added
46
Pre-assembled joint Individual flange compared to design plane
Size DN
150#
300#
600# 900# SizeDN
150# 300# 600# 900#
650 2.03 2.27 2.37 2.54 650 1.44 1.60 1.68 1.79
700 2.03 2.26 2,35 2.56 700 1.43 1.60 1.66 1.81
750 2.01 2.23 2.31 2.51 750 1.42 1.58 1.63 1.78
800 2.03 2.20 2.28 2.52 800 1.44 1.56 1.62 1.78
850 2.01 2.19 2.26 2.53 850 1.42 1.55 1.60 1.79
900 2.00 2.17 2.25 2.50 900 1.41 1.54 1.59 1.77
950 2.02 1.99 950 1.43 1.41
1000 2.01 2.00 1000
1.42 1.41
1050 1.97 1.98 1050
1.40 1.40
1100 1.97 1.98 1100
1.40 1.40
1150 1.96 1.99 1150
1.39 1.41
1200 1.95 1.97 1200
1.38 1.39
1250 1.95 1.97 1250
1.38 1.39
1300 1.95 1.96 1300
1.38 1.39
1350 1.95 1.98 1350
1.38 1.40
1400 1.94 1.97 1400
1.37 1.39
1450 1.94 1.95 1450
1.37 1.38
1500 1.94 1.95 1500
1.37 1.38
Table 3 ASME B16.47 flanges, series B, all sizes, larger than 600#Maximum flange face misalignment at raised face OD For pre-assembled joint, 1.75mm For individual flange, maximum difference to design-plane = mm
This results in the following figures for measurements taken at the outer rim of the flange:
Slide containing torque values to be added
47
Best Practices
48
Best Practices
F
S I 0
F S
I
49
Best Practices
O
50
Best Practices
51
Best Practices
52
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