Engineering and Design Process.ppt
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Transcript of Engineering and Design Process.ppt
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7/27/2019 Engineering and Design Process.ppt
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An Overview of the
Engineer ing and Design Process
.A Look at Quality Too!!!
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Lets Talk Design for a Minute....
Technical and management processes which
commence with:
Identification of design input Criteria, parameters. bases or other design
requirements on which the final design is based
Leads to and includes issuance of design
output documents
Design activities shall be documented in sufficient detail to
permit verification...
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Design Process Flow..
Supplier Design
Project
or
Task
Initiation
Planning
Design
Inputs/
Rqmts
Internal and External Interfaces
Design Changes
Design
Verification
Approval
and
Release
Document
Control
Design
Process
Design
Descriptive Documents
Drawings
Specifications
Justification Documents
Calculations
Reports
Output
C
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c
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Design Control....
To assure the definition, control and verification of design
input and design activities
Key features
Design inputs are appropriately specified on a timely
basis
Design interfaces are identified and controlled
Design verification is performed independently; i.e. by
person(s) other than the originator of the design
Design changes are controlled by the same measures
applicable to the original design
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Design Control .....
Measures established to assure requirements and design
basis correctly translated into:
Specifications
Drawings Procedures
Instructions
Measures include:
Quality standards included in design documents
Control of deviations
Measures provide for:
Verifying of checking adequacy of design by individualsother than preparer
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Reasons for a Design Control Program....
Its the law, permit, or regulation
Strong industry correlation between effectivecontrol and successful design and operations
Costs are reduced and products work better
Fewer mistakes made
Complexity of the work
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RegulatoryRqmts
Client
Rqmts
Codes &
Stds
S&W Stds
Operating
Experience
Engineering and Design Control
Technical
Reports
Site Plan
Plot PlanGen Arr
System
Description
Structural
Support
Design Spec
Structural
Design
Criteria
Electrica
l
Design
CriteriaMaster Spec
Calc Methods
Flow
Diagrams
Logic
Diagrams
One Line
Diagrams
Other
Conceptual
Drawings
Loop
Diagram
s
ElementaryDiagrams
Project
Drawings
Project
Specs
Key Design Documents Configuration Management
Combined
Operating
License
Application
Early Site
Permit
ITAAC
Construction (Modular)
Design
Certification
Physical
Diagrams = Functional Schematics
Inspections, Tests Analyses and Acceptance Criteria
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Some Design Inputs...
Basic functions of SSC
QA
Design conditions
Material requirements
Structural requirements
Electrical requirements
Performance
requirements
Chemical requirements
Operational
requirements
Instrumentation and
controls Maintenance, repair and
in-service inspection
Fire protection
Design bases, regulatory requirements, codes and
standards
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FSK
1-Line
LSK
ESK
Loop
Piping
Drawing
Raceway
Wiring
Diagram
Piping
Electrical
Controls
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Drawings and Diagrams.
Documents prepared for use in the production,construction or fabrication of facilities such as: a P&ID,one-line diagram or piping isometric drawing
Incorporate correct design inputs and proper design approach used
All design inputs reviewed and approved
If not approved then marked for confirmation required or hold
Drawing/diagram must be: Technically adequate
In accordance with applicable standards, guidelines and procedures
Client requirements incorporated
Conforms to applicable licensing commitments orrequirements, codes etc.
Compatible with engineering effort by other engineers
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Flow Diagram - FSK
.Schematically
presents a system
designed to moveliquids or gases;
shows the controls
instrumentation of
the system.
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Piping Drawing
.Locates all piping and piping components
in a gas or liquid system.
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Logic Diagram - LSK
.Schematically presents the control
requirements of systems and equipment.
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Elementary Diagram - ESK
.Schematically shows
the electrical
connections andfunction of a specific
control circuit
arrangement.
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Loop Diagram
.Schematically shows
the instrumentation
required to measure orcontrol variables in a
fluid system.
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One Line Diagram
.Schematically show
the type and
arrangement of busses,transformers, circuit
breakers and other
equipment required for
an electricalsystem.
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Wiring Diagram
.Connects
cable from one
piece ofequipment to
another.
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Characteristics of a Quality Design
Document.....
Design Adequacy
Organization
Standardization
Appearance
Traceability
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Good Procedures Ensure Good
Engineering Practices.....
Because they:
Assign responsibility
Meet customer and regulatory requirements
Assure that disciplines interface
requirements are met
Document our most successful methods of
doing work
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Our Engineering Procedures Provide.....
Instructions on design document preparation and
processing
A means to control all changes or revisions A design document control system
Identification
IndexingFiling and distribution
A method for design document review by a second
competent and qualified individual
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A Few Key Procedure Control Features....
Define work scope
Identifies responsibilities and objectives to be met
Establish design input
Identify and control external design interfaces for Overall design verification status for existing facility
As-built drawings of existing facility to be modified
Responsibilities defined for work involved, such as determining
consequences of failure, hazards analysis, criticality, mass balance
Identify and control design inputs
Functional design criteria
Supplemental design requirements
Applicable codes and standards
Documentation and approval to assure proper documents are used
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Controlling the Design Process..
Supplier Design
Project
or
Task
Initiation
Planning
Design
Inputs/
Rqmts
Internal and External Interfaces
Design Changes
Design
Verification
Approval
and
Release
Document
Control
Design
Process
Design
Descriptive Documents
Drawings
Specifications
Justification Documents
Calculations
Reports
Output
C
h
e
c
kI
n
g
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Design Output .....
Procedural requirements for:
Identifying documents to permit ready reference and
retrieval
Defining objective of analyses Definition of design inputs and their sources
Documenting results of literature searches or other
applicable background data
Documenting assumptions and identifying thoseassumptions to be verified
Identification of computer calculations, including type code,
inputs and assumptions
Review and approval
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Specifications....
Establish qualitative requirements for products,
materials, and workmanship supplied under contract
Define functional requirements that equipment mustsatisfy
Define acceptance criteria in specific, measurable values
General types:
General construction specifications Procurement specifications
Equipment specifications
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Normal Review Process....
Part of the engineering process
Independent and objective
Checker looks for errors in a structured
manner
Checking is:
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Design Reviews....
Brings questions and points of view into open
Confirm proper set of requirements has been defined and
available for use
Evaluation of design concepts against designspecification
Confirms whether design meets requirements
Do data and results support conclusions?
Are the assumptions reasonable? Any significant items not addressed?
Are the design methods appropriate?
Any problems remaining to be resolved?
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Design Verification....
Documented review
Confirms adequacy of the design
Substantiates that inputs were correctly
selected
Design meets the specified inputs
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Design Change Control .....
Procedures identify requirements needed to make
design changes to approved design documents
including
Field changes Ensure impact considered
Actions documented
Information transmitted to affected persons and
organizations
Changes shall be justified and subject to design
control measures commensurate with those
applied to original design
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Good Engineering Practices.
10 Fundamentals
Understand you customers expectations!
If you assume! You better check it out!
When in doubt - Ask! Remember: Its your work! Be Proud of It!
Make sure you understand whats expected of you!
Communicate! Communicate! Communicate!
Protect your Companys and your customers reputation! -
They are yours too!
Provide the highest quality service!
Youre part of the team.an integral part!
Learnin never slee s!
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And Remember .....
Good technical analysis
+Good documentation
=
Quality engineering
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An Overview of the
Engineering and Design Process
.A Look at Quality Too!!!
Thank you!