SAMPLEDESCRIPTIONAPPLICATION1) Continuous thickVisible outlines2)Continuous thinImaginary, dimension, projection linesLeader lines, Hatching lines.3)Dotted thin / thickHidden outlines, hidden eges4)Chain thin Centre lines, lines of symmetry5)Chain thin double-dottedOutlines of adjecent parts,Initial outline of part before forming6)Continuous thinLong break lines(with zigzag)TYPES OF LINE

DIMENSION SYMBOLLinearAlignedRadiusDiameterAngularLeaderABArc Length(AB)Reference Dim.Approximate Dim.AB Aprox.62.57-10Dim. With ToleranceAA

STRAIGHTNESSFLATNESSCIRCULARITY CYLINDRICITYPERPENDICULARITY MACHINING SYMBOL0.080.080.10.10.1COAXIALITY

SURFACE FINISH SYMBOLS

DRAWING PROJECTION METHODS

Sheet1

VERTICAL PLANE

FOURTH

QUADRANT

FIRST

4th ANGLEQUADRANT

1st ANGLE

HORIZONTAL PLANE

THIRD

QUADRANT

3rd ANGLELOOKING DIRECTION

SECOND

QUADRANT

2nd ANGLE

1st ANGLE

ELEVATIONAXIS

R.H.S.VIEWPLANL.H.S.VIEW

3rd ANGLE

L.H.S.VIEWPLANR.H.S.VIEW

ELEVATIONAXIS

Sheet2

TYPES OF LINES

SAMPLEDESCRIPTIONAPPLICATION

1)Continuous thickVisible outlines

2)Continuous thinImaginary, dimension, projection lines

Leader lines, Hatching lines.

3)Dotted thin / thickHidden outlines, hidden eges

4)Chain thinCentre lines, lines of symmetry

5)Chain thin double-dottedOutlines of adjecent parts,

Initial outline of part before forming

6)Continuous thinLong break lines

(with zigzag)

Sheet3

AXISAXIS1st ANGLE3rd ANGLEELEVATIONPLANR.H.S.VIEWL.H.S.VIEWELEVATIONPLANR.H.S.VIEWL.H.S.VIEWDRAWING PROJECTION METHODS(contd.)

VIEWS AND SECTIONS

VIEWS AND SECTIONS(contd.)

GENERAL ASSEMBLY (PRESSURE VESSEL)

TraysToriconeSkirtNozzleTop Dish EndShell SectionLadder cleat

PRB: Pressure Retaining BoundaryPRT : Pressure Retaining T-FrameSTBD : Star Board ( Right Side )PORT : Port ( Left Side )FWD : Forward ( Direction of Motion )AFT : After ( Back of Vessel )NTD : Normative Technical DocumentSOT : Submarine Overseeing TeamCOMMON TERMS USED IN SPECIAL JOBS

Skill Refresher ModuleModule:- Fabrication Drawing Reading & UnderstandingPre - Test / Post Test for ParticipantsTime:- 30 Min(1) To do changes in Drawing the document is used is _________________. (A) DCR(B) NCR(C) QAR(D) QCR(2) M12 X 8nos. Written in the Drawing indicates ________________.(A) External threads of 12 dia. Holes(B) Internal thread M-12X8 deep(C) Chamfer of 12mm(D) Drilled hole 8nos. & M12 threads(3) What indicates symbol in the drawing .(A) Machining after welding(B) Machining before welding(C) Grinding After welding(D) No welding.(4) To show critical details of any part ______________ view is used in Drawing.(A) Sectional View(B) Full View(C) Half View (D) Partial View(5) Non visible part of job is indicated by ______________ Line.(A) (B)(C)(D) Cont.

(6) The surface roughness indicates surface roughness in ____________.(A) M.M.(B) C.M.(C) Meter(D) Microns(7) First Angle projection, plan is placed bottom of ____________.(A) Elevation(B) RT-Side View(C) LT-side View(D) in same plan of elevation(8) What indicates A: __________________(9) What Indicates B: __________________(10) What Indicates C: __________________(11) What is D: __________________Cont.

(12) What Indicates the Sketch (A) Circularity(B) Cylindrycity(C) Co- axiality (D) Non of the above

(13) What indicates the Sketch(A) Perpendicularity(B) Flatness(C) Straightness(D) Non of the above

Cont.

Cont.(14) symbol in the drawing indicates.(A) Seam No.(B) Nozzle Mark(C) Item No.(D) None of the above(15) Distance L is = ______________mm. 100Typ100Typ9 holes @ 200mm equal spaceL(A) 2000mm(B) 2200mm(C) 1800mm(D) 1600mm

Cont.PRACTICAL TEST

(1) Draw First angle orthographic Projection of the Sketch

(2) Make BOM of the Sketch given below

1015200150015006 Nos. 10 mm thk Gusset plates, 3 nos. both sides as shown in the Drg.

150

Pre-Test / Post Test Answer SheetQu.- Ans.1 - A2 - D3 - A4 - A5 - AQu. - Ans.11 - Nozzle / Hole12 - A13 - A14 - B15 - 1800mmPRACTICAL TEST ANS.Qu.- Ans.6 - D7 - A8 - Object Line9 - Non Visible Line10 - Centre Line(1) Orthographic Projection(2) Bill of Material

PART NO

DISCRIPTION

SIZE

QTY

JOB

SP

1

PLATE

1500 x 200 x 10thk

1

2

PLATE

1500 x 150 x 15thk

1

3

PLATE

150 x 92.5 x 10thk

3