Design Review Work Instruction

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1.0 Purpose
2.0 Theory
3.0 Design Review
4.0 Types of Design Reviews
5.0 Design Review Packages
6.0 Responsibilities

1.0 PURPOSE
This document establishes design review instructions, documentation requirements, scheduling of design reviews, criteria for action item closeout and the items to be defined at each level of review.

2.0 THEORY
Design review is used to enhance the probability of product, software or service success by identifying potential or actual design problems. The solution of identified problems is not attempted at the review but is assigned as an action item. Reviewing a design does not imply a lack of confidence in the designer - it is a normal and necessary part of best engineering practice. Designers of critical items welcome rigorous design reviews for the peace of mind they provide. They help assure that something has not been overlooked because the designer was too close to the work. There is no reflection on a person's competence in having to respond to action items. To serve as a design reviewer indicates that your associates regard you as an expert.

3.0 DESIGN REVIEW
All deliverable hardware and software should undergo at least two levels of design review. ...

3.1 Number and Type of Design Reviews
The number and type of design reviews will depend on...

3.2 Scheduling Reviews
At the start of a program, responsible authorities must...

3.3 Heritage Design Review
Designs that are qualified by another program do not require additional review unless...

3.4 Software and Service Reviews
Computer programs, contents of ROM, PROM and other programmable devices and service operations must be reviewed as carefully as hardware.

3.5 Subcontractor Reviews
Products and services from subcontractors must be design reviewed according to...

3.6 Interfaces
Reviewers should devote extra attention to...

3.7 Post Review Design Changes
Changes made to a design subsequent to a successful review should be flagged at the next review. Design changes, even minor ones made after the final design review (CDR) are...

3.8 Design Review Items
1. Requirements...
2. Design....
3. Reviewers....
4. Design Package....
5. Agenda....
6. Review Minutes...
7. Closeout of Action Items...

3.9 Inappropriate Items for a Design Review
...should be discussed only as they affect...

3.10 System Review Attendees
System review attendees should include...

4.0 TYPES OF DESIGN REVIEWS

4.1 System Level Reviews

4.1.1 Baseline Design Review (BDR)
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The BDR is held to assure that the project objective and requirements are...

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The output of the BDR consists of...

4.1.2 Preliminary Design Review (PDR)
The PDR is the first review of the preliminary detailed design and is generally... The PDR address the following...
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The output of the PDR consists of...

The development (performance) configuration documents include:...

Formal change control procedures are invoked concurrent with the release of development (performance) configuration documents.

4.1.3 Critical Design Review (CDR)
The system CDR is held immediately prior to design freeze and before significant fabrication activity begins. The CDR presents...

The CDR should address the following items:

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Completion of the CDR and resolution of its action items establishes...

4.1.4 Environmental Review (ER)
The ER occurs prior to the start of environmental testing of the integrated system or end item. Its purpose is to...

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4.1.5 Buyoff Review
The buyoff review...addresses...

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4. Post-qualification plans.

For programs involving a qualification product, a buyoff review following qualification testing may be used to...

4.1.6 Operations Review
This review applies to programs that have...

4.2 Subsystem Level Reviews
Subsystem level reviews are held when the design...

4.2.1 Hardware Subsystem Reviews
Circuit design reviews are completed...as appropriate...
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4.2.2 Software Subsystem Reviews
Software reviews should be held...

4.2.3 Fabrication Pre-release Review (FPR)
Prior to release of a drawing package to the shops for fabrication, and FPR...should assure that the drawing package:
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The review should address the following items:
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Upon successful completion of the FPR and closure of action items, the package is released and configuration control begins.

4.3 Other Reviews
Some programs require external reviews. These reviews...

5.0 DESIGN REVIEW PACKAGES
All design reviews require a review package. For all but the FPR, the package must...

5.1 System Level Design Review Data Package (BDR, PDR, CDR)
System level review packages typically contain:

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5.2 Circuit Design Review Data Package
Circuit design review packages typically contain:

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5.3 Software Review Data Package
Software review packages typically contain:

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6.0 RESPONSIBILITIES
6.1 Program Manager
The program manager is responsible for...

6.2 Chief Engineer
The chief engineer is responsible for...

6.3 Chief Scientist
The chief scientist is responsible for...

6.4 Presenter
The presenter is responsible for...

6.5 Reviewers
Independent reviewers should...

6.6 Chairperson
The Chairperson...

6.7 Section, Group and Department Supervisors
Line supervisors are responsible for...

REVISION HISTORY AND APPROVAL RECORD
Design Review Work Instruction
Rev: Orig (EO #??)

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