DESIGN DATA DESIGN CODE = ASME SEC VIII DIV I EDITION 201 *MAWP (MEASURED AT TOP) OPERTAING PRESSURE = 1.796 mpa OPERTAING TEMPERATURE = 78 °C DESIGN PRESSURE = 1.8244392909 mpa [SHT-5] DESIGN TEMPERATURE = 78 °C RADIOGRAPHY = FULL JOINT EFFICIENCY = 1 CORROSION ALLOWANCE = 3 mm MEDIUM = UTILITY GAS SPECIFIC GRAVITY OF MEDIUM = 1 (ASSUME AN HIGHER SID FLUID DENSITY = 1000 Kg/m³ HEIGHT OF MEDIUM = FULL OF WATER [SHT-5] APPLICABLE LOADING = REFER SHEET No. 4 VESSEL SIZE = 1600 ± 3MM ID x 2100 HEIGHT OF SKIRT = 1000 mm MATERIAL SPECIFICATION Allowable SHELL = SA 516 M Gr. 60 DISHED HEAD = SA 516 M Gr. 60 NOZZLE PIPE = SA 106M Gr. B NOZZLE FLANGE = SA 105M STUD BOLT = SA 193M Gr. B7 [SHT 39 TO 41] HEX. NUT = SA 194 Gr. 2HM MDMT = -27.6°C @1.76MPa THK OF INSULATION = 40 mm *MAXIMUM ALLOWABLE WORKING PRESSURE = 1.76MPa (18 kgf/cm 2 )
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DESIGN DATADESIGN CODE = ASME SEC VIII DIV I EDITION 2010ADDENDA 2011
*MAWP (MEASURED AT TOP)
OPERTAING PRESSURE = 1.796 mpa
OPERTAING TEMPERATURE = 78 °C
DESIGN PRESSURE = 1.8244392909 mpa [SHT-5]
DESIGN TEMPERATURE = 78 °C
RADIOGRAPHY = FULL
JOINT EFFICIENCY = 1
CORROSION ALLOWANCE = 3 mm
MEDIUM = UTILITY GAS
SPECIFIC GRAVITY OF MEDIUM = 1 (ASSUME AN HIGHER SIDE)
FLUID DENSITY = 1000 Kg/m³
HEIGHT OF MEDIUM = FULL OF WATER [SHT-5]
APPLICABLE LOADING = REFER SHEET No. 4
VESSEL SIZE = 1600 ± 3MM ID x 2100 MM LG (T/L to T/L)
HEIGHT OF SKIRT = 1000 mm
MATERIAL SPECIFICATION Allowable stress(Mpa)
SHELL = SA 516 M Gr. 60 118
DISHED HEAD = SA 516 M Gr. 60
NOZZLE PIPE = SA 106M Gr. B
NOZZLE FLANGE = SA 105M
STUD BOLT = SA 193M Gr. B7 [SHT 39 TO 41]
HEX. NUT = SA 194 Gr. 2HM
MDMT = -27.6°C @1.76MPa
THK OF INSULATION = 40 mm
*MAXIMUM ALLOWABLE WORKING PRESSURE
= 1.76MPa (18 kgf/cm2)
LOADING TO BE CONSIDERED IN DESIGNING THE VESSELAS PER ASME SEC-VIII DIV.I.2010 EDITION UP TO & INCL. ADDENDA 2011 (UG-22)
a. APPLICABLE
EXTERNAL PRESSURE (UG 21) REF. SHEET - NOT APPLICABLE
b. APPLICABLE
c. NOT APPLICABLE
d.
THE ATTACHMENT OF
1. INTERNALS (AS PER APPENDIX D ) REF. SHEET - SADDLE &LUGS
2. VESSEL SUPPORTS SUCH AS LUGS, RINGS, SKIRTS, SADDLES AND LEGS. (AS PER APPENDIX G) APPLICABLE
e NOT APPLICABLE
f WIND, SNOW AND SEISMIC REACTIONS, WHERE REQUIRED.REF. SHEET 11-13, 23- 33
g IMPACT REACTIONS SUCH AS THOSE DUE TO FLUID SHOCK REF. SHEET NOT APPLICABLE
h TEMPERATURE GRADIENTS AND DIFFERENTIAL THERMAL EXPANSION. REF. SHEET NOT APPLICABLE
INTERNAL PRESSURE (UG 21) REF. SHEET 10-14
WEIGHT OF THE VESSEL AND NORMAL CONTENTS UNDER OPERATING OR TEST CONDITIONS. (THIS INCLUDES ADDITIONAL PRESSURE DUE STATIC HEAD OF LIQUIDS.) REF. SHEET 5
SUPERIMPOSED STATIC REACTIONS FROM WEIGHT OF ATTACHED EQUIPMENT SUCH AS MOTORS, MACHINERY, OTHER VESSELS, PIPING, LININGS AND INSULATIONS. REF. SHEET
CYCLIC AND DYNAMIC REACTIONS DUE TO PRESSURE OR THERMAL VARIATIONS OR FROM EQUIPMENT MOUNTED ON A VESSEL AND MECHANICAL LOADINGS.
AS PER ASME SEC-VIII DIV.I.2007 EDITION UP TO & INCL. ADDENDA 2008 (UW-11)
APP
ALL BUTT WELDS IN THE SHELL AND HEADS OF VESSEL USED TO CONTAIN LETHAL SUBSTANCES.NOT APP
1
2 NOT APP
3 NOT APP
4 NOT APP
NOT APP
5 NOT APP
6 NOT APP
7 NOT APP
CONCLUSION:
CODES & STANDARDS
ASME Boiler & Pressure Vessel Code
2010 Edition, Addenda 2011
ASME Boiler & Pressure Vessel Code
2011 Edition, Addenda 2011
ASME Boiler & Pressure Vessel Code
2012 Edition, Addenda 2011
Welded and Seamless Wrought Steel Pipe
Flange Fittings, Socket Welded and Threaded
Design Loads for Buildings and Structures
FULL RADIOGRAPHY: - THE FOLLOWING WELDED JOINTS SHALL BE FULL RADIOGRAPHED.
ALL BUTT WELDS IN THE SHELL AND HEADS OF VESSEL IN WHICH THE LEAST NOMINAL THK AT THE WELDED JOINTS EXCEEDS 32MM AS PER UCS-57
ALL BUTT WELDS IN THE SHELL AND HEADS OF UNFIRED STEAM BOILERS HAVING A DESIGN PRESSURE EXCEEDING 3.4bar
a) ALL BUTT WELDS IN NOZZLE ATTACHED TO SHELL OR HEAD WHICH ARE REQUIRED TO BE FULLY RADIO GRAPHED AS PER POINT 1 OR 3 FOR EXEMPTION REF. POINT 4(b)
b) CATEGORIES B AND C BUTT WELDS IN NOZZLES AND COMMUNICATING CHAMBERS THAT NEITHER EXCEED NPS 10 NOR 29MM WALL THICKNESS DO NOT REQUIRE ANY RADIOGRAPHIC EXEMPTION.
ALL CATEGORY A AND D BUTT WELDS IN SHELL AND HEAD WHERE DESIGN IS BASED ON JOINT EFFICIENCY 1 AS PER UW 12(a) IN WHICH CASE.
a) ALL CATEGORY A AND B WELDS CONNECTING SHELL OR HEADS SHALL BE TYPE NO.1 OR 2 OF TABLE UW-12.
b) ANY CATEGORY B AND C BUTT WELDS (EXCLUDING CATEGORY B AND C BUTT WELDS IN NOZZLES THAT NEITHER EXCEED 250 NB NOR 29MM WALL THICKNESS) WHICH INTERSECT THE CATEGORY A BUTT WELDS IN
SHELL OR HEADS OR CONNECT SEAMLESS SHELL OR HEADS AND WHICH ARE NOT REQUIRED TO BE FULLY RADIOGRAPHED BY POINT 1, 2, 3 OR 4 ABOVE SHELL AS A MINIMUM REQUIREMENT, BE SPOT
RADIOGRAPHED.
ALL BUTT WELDS JOINED BY ELECTRO GAS WELDING WITH ANY SINGLE PASS GREATER THAN 38MM & ALL BUTT WELDS JOINED BY ELECTRO SLAG WELDING
ULTRASONIC EXAMINATION MAY BE SUBSTITUTED FOR RADIOGRAPHY FOR FINAL CLOSURE SEAM IF THE CONSTRUCTION DOSE NOT PERMITS INTERPRETABLE RADIOGRAPHY.
ALL BUTT JOINTS OF SEAM IN THE SHELL, HEAD TO SHELL TO BE FULLY RADIO GRAPHED AS PER CUSTOMER REQUIREMENT.
DATA
MDMT : (TO BE DETERMINED AT 1.04MPa
MATERIAL SPECN.MATERIAL PROVIDED THK
GROUP MAX.
SHELL SA 516 M Gr.60 (NORM) D 18MM[SHT.10]
SHED HEAD SA 516 Gr.60 (NORM) D 20MM[SHT.14]
SA 106 GR B B 10.16MM[SHT.18]
SA 105 NOT APP 10.16MM[SHT.18]
UG 20(f) CONSIDERATION
1 MET
2 THE COMPLETED VESSEL SHALL BE HYDRO TESTED AS PER UG 99(b), (c) OR (K) MET
3 MET
4 MET
5
FOR THE VESSEL
*NOZZLE WHICH IS HAVING MAX. THK IS CONSIDERED.
**MIN. THK OF DISHED HEAD [ NOTE 1 OF FIG UCS 66.2]
DETERMINATION OF COLDEST ALLOWABLE MINIMUM DESIGN METAL TEMPERATURE (MDMT) USING UCS 66 RULES
MAWP : MAX. ALLOWABLE WORKING PRESSURE = 1.76 MPa AT 78°C
DESCRIPTION TO
CURVE
P. NO.1 ; GR. NO. 1
P. NO.1 ; GR. NO. 1
NOZZLE PIPE
P. NO.1 ; GR. NO. 1
NOZZLE FLANGE
P. NO.1 ; GR. NO.2
FOR P.NO.: 1 GROUP NO. 1 (OR) 2 MAX. THK < 12.5MM FOR MATERIAL LISTED IN CURVE A OF FIG. UCS 66 (OR) < 25.4MM FOR MATERIAL LISTED IN CURVE B,C,D OF FIG UCS 66
DESIGN TEMP. WITHIN -29°C TO 345°C
THERMAL (OR) MECHANICAL SHOCK LOADING ARE NOT A CONTROLLING DESIGN REQUIREMENT CYCLIC LOADING IS NOT A CONTROLLING DESIGN REQUIREMENT. SINCE ALL THE ABOVE THE CONDITION ARE MET, IMPACT TEST IS NOT REQUIRED. HOWEVER CALCULATION HAS BEEN
PROCEEDED IN ORDER TO FIND OUT COLDEST ALLOWABLE MINIMUM DESIGN METAL TEMPERATURE (MDMT)
CYCLIC LOADING IS NOT A CONTROLLING DESIGN REQUIREMENT. SINCE ALL THE ABOVE THE CONDITION ARE MET, IMPACT TEST IS NOT REQUIRED. HOWEVER CALCULATION HAS BEEN
PROCEEDED IN ORDER TO FIND OUT COLDEST ALLOWABLE MINIMUM DESIGN METAL TEMPERATURE (MDMT)
POST WELD HEAT TREATMENT REQUIREMENT
POST WELD HEAT TREATMENT OF VESSEL IS REQUIRED UNDER FOLLOWING CONDITIONS: APP
1 WHEN A VESSEL IS USED TO CONTAIN LETHAL SUBSTANCES. NOT APP
2 NOT APP
3 WHEN THE MATERIAL REQUIRE IMPACT TESTING AS PER UCS 66 REF. SHEET NOT APP
4
a). THE THICKNESS OF THE PART BEFORE COLD FORMING EXCEEDS 16 mm
b). THE REDUCTION BY COLD FORMING FROM THE AS ROLLED THICKNESS IS MORE THAN 10%
FOR P.No:1 GR No.1 & 2 MATERIALS EXIST
COMPUTATION OF FIBER ELONGATIONTHE EXTREME FIBER ELONGATION SHALL BE DETERMINED BY THE FOLLOWING FORMULAE.PERCENTAGE OF EXTREME FIBER ELONGATION =FOR DOUBLE CURVATURE(EX.HEAD) DISHED HEAD WHERE, t = THICKNESS OF PLATE IN mm = 30 Rf = FINAL CENTERLINE RADIUS IN mm = Ro = ORIGINAL CENTERLINE RADIUS (EQUALS INFINITY FOR FLAT PLATES) mm. PERCENTAGE FO EXTREME FIBER ELONGATION =
*KNUCKLE RADIUS CONSIDERED SINCE MORE CRITICAL = 3.6
6 .31> 5PERCENTAGE OF EXTREME FIBER ELONGATION FOR SINGLE CURVE(EX.CLYLINDER) =WHERE, t = THICKNESS OF PLATE IN mm = 30 Rf = FINAL CENTERLINE RADIUS IN mm = 803 Ro = ORIGINAL CENTERLINE RADIUS (EQUALS INFINITY FOR FLAT PLATES) MM.
FOR SHELL FOR MAN WAY
PERCENTAGE FOR EXTREME FIBER ELONGATION 1.86799501868
2.7 < 5
AS PER ASME SEC - VIII DIV. I. 2007 EDITION UP TO & INCL. ADDENDA 2008 (UCS -79)
WHEN THE BUTT WELDS IN THE SHELL AND HEADS OF VESSEL IN WHICH THE LEAST NOMINAL THICKNESS AT THE WELDED JOINTS EXCEEDS 38mm. MATERIAL OVER 32mm THROUGH 38mm NOMINAL THK WHEN
PREHEAT IS NOT APPLIED AT A MIN. TEMPERATURE OF 200°F DURING WELDING (TABLE UCS 56)
VESSEL SHELL SECTIONS, HEADS, AND OTHER PRESSURE BOUNDARY PARTS OF ALL CARBON AND LOW ALLOY STEEL FABRICATED BY COLD FORMING SHALL BE HEAT TREATED. SUBSEQUENTLY (SEE UCS 56) WHEN THE
RESULTING EXTREME FIBER ELONGATION IS MORE THAN 5% FROM THE AS ROLLED CONDITION AND ANY ONE OF THE FOLLOWING CONDITION EXISTS.
c). THE TEMP. OF THE MATERIAL DURING FORMING IS IN THE RANGE OF 250°F(120°C) -900°F(480°C)
THE EXTREME FIBER ELONGATION MAY BE AS GREAT AS 40% WHEN NONE OF THE CONDITION LISTED ABOVE IN 1, 3, & 4 EXISTS.
CONCLUSIONS: POST WELD HEAT TREATMENT REQ. FOR DISHED HEAD. HOWEVER STRESS RELIEVING OF EQUIPMENT AS A WHOLE IS DONE AS PER CUSTOMER REQUIREMENT
75 24 = 6.31
285.2
75(1 )t Rf
Rf Ro
50(1 )t Rf
Rf Ro
DESIGN SHEET FOR CYLINDRICAL SHELL (INTERNAL PRESSURE)AS PER ASME SEC – VIII. DIV. I. 2007 EDITION UP TO & INCL. ADDENDA 2008
= 15mmWhich is greater than the above two required thickness
WIND ALLOWANCE FACTOR FOR PIPING AND PLAT FORM EFFECT*INNER DEPTH OF DISHED HEAD [SHT 5] + NOM.THK. OF DISHED HEAD [SHT-14]** REF DRG. NO : 1936 /B SHT 1 OF 2CASE (2) COMPRESSIVE STRESSFACTOR ‘A’ =
Ro – OUTER RADIUS =
=
t – CORRODED THK = 15mmFACTOR A =
=
FACTOR BALLOWABLE COMPRESSIVE STRESS = 1.2 x 103.42= 124.1 MPaWEIGHT OF VESSEL EXCLUDING EXTERNAL WEIGHT = 39366.7 NWEIGHT OF EXTERNALS = 8896 NEMPTY OF VESSEL = 48263 N SAY 49000NWEIGHT OF LIQUID = CAPACITY OF VESSEL x DENSITY OF LIQUID
= 5.4 x 1000 x 9.81 = 52974N SAY 53000OPERATING / TEST WEIGHT = 49000 +53000 = 102000 NREQUIRED THK ‘t’ =
=
= 0.1+ 0.162 = 0.262MMPROVIDED THK. = 15MM [EXCLUSIVE OF CORROSION ALLO.]CORRODED I.D OF SHELL = 2 x R
DESIGN SHEET FOR ELLIPSOIDAL HEAD (INTERNAL PRESSURE)AS PER ASME SEC. VIII DIV.I-2007 EDITION UP TO & INCL. ADDENDA-2008
ELLIPSOIDAL HEAD UG-32(d)INTERNAL PRESSURE DESIGNMATERIAL SA 516 M GR 485(Gr.60)DESIGN TEMPERATURE 78°C