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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER 4(OLD) • EXAMINATION SUMMER 2018
Subject Code: 345505 Date: 07-May-2018
Subject Name: Fabrication Technology II
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Define the term "Pressure Vessel" list any four function of pressure vessel.
07

XYZ industrial shell fabrication having following data/information
Sr. No
Description
Sym
unit
Dimension
1
Outside dia. of shell
Do
mm
2200
2
Thickness of shell
t
mm
15
3
Height (length) of shell
H
mm
3000
Calculate find out:
1
Inside Dia. of shell
Di
mm

2
Mean Dia. of shell
Dm
mm

3
Development Length of shell plate
L
mm

4
Shell Plate diagonal length.
Ld
mm

5
Inside Volume of shell
Vi
M3

07
Q.2

Write manufacturing sequence for "Pressure Vessel"
07

Describe "Material test certificate" with detail
07
OR

Write full name/abbreviation of the below Codes/Standards (any seven)
ASME SEC-II Part-A ASME SEC-V ASME SEC-VIII
ASME SEC-IX ASME SEC-II Part-B, ASME SEC-I.
Full form of "TEMA" Full form of " ASTM"
07
Q.3

Write function of Run in Plate Run out plate Production test coupon and show its position in long seam setup with neat sketch.
07

Classify support used for process equipment Describe saddle support with neat sketch.
07
OR
Q.3

Describe the typical limpet coil marking sketch with the help of given data:
Sr. No.
Description
Sym
Dim. In mm
1
Shell O.D/ OD of vessel
Do
800
2
Pitch of limpet coil
P
80
3
Dia. of limpet coil
dc
60
4
Angle of orientation, Inlet nozzle
Outlet nozzle (approx)
Ni
No


5
Length of shell from T.L. to T.L.
L
1200
6
Distance from
Top tan line Inlet nozzle and
Outlet nozzle (approx)
L1
L2
50
1100
14
2/2
Q.4

Prepare a drawing for Dish end template from the following data and calculate required blank dia.
Sr.No.
Description
Sym
Unit
Dimension/Data
1
Inside diameter
Di
mm
1600
2
Crown Radius
Cr
mm
1300
3
Inside depth/height
Hi
mm
500
4
D'end thickness
t
mm
15
5
Straight face length
S.F.
mm
60
6
Knuckle radius
Kr
mm
280
7
Blank Dia.
BD
mm

07

Define "Nozzle" and draw below listed nozzles.
1. Angular nozzle 2. Radial nozzle
3. Tangential nozzle 4. Offset nozzle 5. Set on nozzle
07
OR
Q.4

Describe function of baffle, impingement plate, Tie rod spacer with neat sketch.
07
Q.4

Find out arc length for nozzle N1 AND N2 having following dimension with neat sketch.
Outside dia. Of shell 220 mm Orientation of N1 Nozzle 135° Orientation of N2 Nozzle 225°
07
Q.5

List various internals and externals used in process equipment.
07

During manufacturing of shell in PMS fabrication industries the following observation of shell diameter at various orientations are found.
Sr.No.
Description
Sym
Dimn. In mm
1
Dia. At 30°
D1
4000
2
Dia. At 60°
D2
4002
3
Dia. At 90°
D3
3994
4
Dia. At 120°
D4
3998
5
Dia. At 150°
D5
4010
6
Dia. At 180°
D6
4008
7
Thickness of shell
t
20
Find out
1. Nominal dia. Of shell plate D nom
2. Ovality of ovality.
3. Comment for long seam set up weather is it permissible or not as per code?
4. To remove/prevent the ovality Suggest your measures remedies
07
OR
Q.5

Define the term dish end, classify dish ends and draw hemispherical type dish end.
07

Write function of spider with neat sketch.
07