Blueprint Reading - Nuclear Regulatory Commission

1 Blueprint ReadingBlueprint ReadingReferencesReferences Blueprint Reading Basics Blueprint Reading Basics Warren HammerWarren HammerIndustrial Press Press 1989 Copyright 1989 Blueprint Reading and Technical Sketching for Industry Blueprint Reading and Technical Sketching for Industry Thomas P OlivoThomas P OlivoSealed Source & Device WorkshopBlueprint Reading : 2 Thomas P. OlivoThomas P. OlivoNelson CanadaNelson CanadaCopyright 1992 Copyright 1992 Dimensioning and TolerancingDimensioning and TolerancingASME ASME 1994 (R1999)1994 (R1999)ASME InternationalASME InternationalThree Park AvenueThree Park AvenueNew York, NY 10016 New York, NY 10016--59905990 Blueprints Have Three Main Parts:Blueprints Have Three Main Parts: Drawing Drawing -- Graphical representation that shows the exact Graphical representation that shows the exact shape of a of a component.

2 Dimensions Dimensions -- Numbers that provide the measurements Numbers that provide the measurements of a piece of a a piece of a drawing. Notes Notes -- Include information that cannot be easily Include information that cannot be easily identified on the drawing or other information needed to identified on the drawing or other information needed to fabricate the component. Some information may be fabricate the component. Some information may be important and some may be and some may be Source & Device WorkshopBlueprint Reading : 3 Drawings:Drawings:Exploded View:Exploded View: good for viewing how pieces fit togethergood for viewing how pieces fit together usually no dimensions or piece informationusually no dimensions or piece informationSealed Source & Device WorkshopBlueprint Reading : 4 Drawings:Drawings:Isometric: Isometric: Orthographic:Orthographic:Sealed Source & Device WorkshopBlueprint Reading : 5 Orthographic:Orthographic:Each component has 6 sides and each can be shown as a view Each component has 6 sides and each can be shown as a view on a drawing.

3 Typically, only 3 views (front, top, and right side) on a drawing. Typically, only 3 views (front, top, and right side) are provided unless other views are needed for provided unless other views are needed for Source & Device WorkshopBlueprint Reading : 6 Lines:Lines:Sealed Source & Device WorkshopBlueprint Reading : 7 sectional Drawings: sectional Drawings:Sealed Source & Device WorkshopBlueprint Reading : 8 Partial sectional Drawings:Partial sectional Drawings:Sealed Source & Device WorkshopBlueprint Reading : 9 Partial sectional Drawings:Partial sectional Drawings:Sealed Source & Device WorkshopBlueprint Reading : 10 Dimensions:Dimensions:Point to Point: Point to Point: Datum:Datum:Sealed Source & Device WorkshopBlueprint Reading : 11 May be fractions or decimal and must include unitsDimensions (cont.):Dimensions (cont.):Radii and Holes:Radii and Holes:Sealed Source & Device WorkshopBlueprint Reading : 12 Dimensions (cont.)

4 :Dimensions (cont.):Reference Dimensions:Reference Dimensions:Dual Units:Dual Units:Sealed Source & Device WorkshopBlueprint Reading : 13 Tolerances:Tolerances:+/+ , note or title blockdrawing, note or title Source & Device WorkshopBlueprint Reading : 14 Geometric Tolerancing:Geometric Tolerancing:Sealed Source & Device WorkshopBlueprint Reading : 15 Machining:Machining:Types of Holes:Types of Holes:Sealed Source & Device WorkshopBlueprint Reading : 16 Machining (cont.):Machining (cont.):Threaded Sections:Threaded Sections:Sealed Source & Device WorkshopBlueprint Reading : 17 Machining (cont.):Machining (cont.):Chamfers:Chamfers:Sealed Source & Device WorkshopBlueprint Reading : 18 Machining (cont.):Machining (cont.):Welds:Welds:Sealed Source & Device WorkshopBlueprint Reading : 19 Notes:Notes: Finishes (Machining, Paints, Chemical Finishes (Machining, Paints, Chemical TreatmentsTreatments QC InspectionsQC Inspections Default units dimensions or tolerancesDefault units dimensions or tolerancesSealed Source & Device WorkshopBlueprint Reading : 20 Default units, dimensions, or tolerancesDefault units, dimensions, or tolerances Instructions for fabrication processesInstructions for fabrication processes Other instructions necessary to describe the partOther instructions necessary to describe the partTitle Block:Sealed Source & Device WorkshopBlueprint Reading : 21))