Engineering and Design Process.ppt

7/27/2019 Engineering and Design Process.ppt

1/31

An Overview of the

Engineer ing and Design Process

.A Look at Quality Too!!!


2/31

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...


3/31

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

h

e

c

kI

n

g


4/31

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


5/31

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


6/31

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


7/31

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


8/31

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


9/31

FSK

1-Line

LSK

ESK

Loop

Piping

Drawing

Raceway

Wiring

Diagram

Piping

Electrical

Controls


10/31

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


11/31

Flow Diagram - FSK

.Schematically

presents a system

designed to moveliquids or gases;

shows the controls

instrumentation of

the system.


12/31

Piping Drawing

.Locates all piping and piping components

in a gas or liquid system.


13/31

Logic Diagram - LSK

.Schematically presents the control

requirements of systems and equipment.


14/31

Elementary Diagram - ESK

.Schematically shows

the electrical

connections andfunction of a specific

control circuit

arrangement.


15/31

Loop Diagram

.Schematically shows

the instrumentation

required to measure orcontrol variables in a

fluid system.


16/31

One Line Diagram

.Schematically show

the type and

arrangement of busses,transformers, circuit

breakers and other

equipment required for

an electricalsystem.


17/31

Wiring Diagram

.Connects

cable from one

piece ofequipment to

another.


18/31

Characteristics of a Quality Design

Document.....

Design Adequacy

Organization

Standardization

Appearance

Traceability


19/31

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


20/31

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


21/31

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


22/31

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


23/31

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


24/31

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


25/31

Normal Review Process....

Part of the engineering process

Independent and objective

Checker looks for errors in a structured

manner

Checking is:


26/31

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?


27/31

Design Verification....

Documented review

Confirms adequacy of the design

Substantiates that inputs were correctly

selected

Design meets the specified inputs


28/31

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


29/31

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!


30/31

And Remember .....

Good technical analysis

+Good documentation

=

Quality engineering


31/31

An Overview of the

Engineering and Design Process

.A Look at Quality Too!!!

Thank you!