Date post: | 14-Jun-2015 |
Category: |
Technology |
Upload: | susan-rantall |
View: | 623 times |
Download: | 0 times |
VULNERABILITY ASSESSMENT AND ANALYSIS (VAA)
What is VAA?
Decision support methodology to help identify and prioritize defects for elimination.
What is VAA?
Identifies critical equipment and/or systems
What is VAA?
Identifies key vulnerabilities to deliver safe and reliability operations
What is VAA?
Establishes a prioritized defect list for subsequent functional review and remediation
What is VAA?
How does VAA work?
Based on a Hazop style brainstorming approach
How does VAA work?
Involves small groups of engineering and operating staff, plus individual interviews
How does VAA work?
Produces a substantial amount of information
What’s the purpose of VAA?
To analyze, categorize, and prioritize vulnerabilities
And then what happens?
More detailed information is obtained in subsequent studies
FMEAFault Trees
SIL
Level of Protection Analysis
Why?
To validate the risk issues raised in the qualitative Hazop review
An over-arching methodology
VAA can be used on any process during any phase
An integrated approach
When vulnerabilities are discovered that are not immediately manageable
…the action items flow into the appropriate secondary methodology
Classical Hazop methodology
Team of senior representative
s e.g. design,
project, operating staff
Understanding of the process under study, condition of equipment &
consequences of failure
VAA is a blend
Typical output
Methodology
1) Pre-Assessment
2) Facilitated Assessment & Analysis
3) Post Assessment Phase
Pre-Assessment
- Identifying the VAA objectives-Determining measures of success- Finalizing what elements of the
methodology will be included- Ensuring access to information-Developing an assessment schedule
Pre-Assessment
Objectives and measures of success must be tailored to the organization and its needs
Possible objectives could include:
- Identify all critical vulnerabilities- Identify and rank all key assets based
on a common “vulnerability maturity matrix”
- Develop the business case for making vulnerability reduction investments
- Enhance awareness / make VAA an integral part of business strategy
Facilitated Assessment and Analysis
VAA Facilitation Workflow
Facilitated Assessment and Analysis
VAA starts with the fullest description of the system / process and then questions every part of it
Post Assessment
- Ranking vulnerabilities by risk category- Prioritizing assessment
recommendations- Developing an action plan- Capturing lessons learned and best
practices- Conducting periodic assessments to
report progress
Post Assessment
Risk mitigation activities that are low cost or result in cost savings should get special attention
Post Assessment
Other vulnerabilities might require further assessment using quantitative methods in order to identify appropriate risk reduction actions
Deliverables
The VAA process delivers a comprehensive report documenting the study, resulting assessment and identified actions
Deliverables
A typical report may include:- Visual representation of
vulnerabilities and criticalities- Identification of vulnerabilities by
system or area- Vulnerability by category- Prioritized action list- Action by type
Summary
VAA is an over-arching methodology designed to expose and discover vulnerabilities across a wide segment of possible impacts
Summary
FMEA, Risk Assessment, and RCM have a purpose
But that purpose is best served after the VAA
When VAA comes 1st it delivers focus more broadly on consequences from all parts of the system or process
About ARMS Reliability
Since 1995, ARMS Reliability has been at the forefront of proactive asset management strategies for a range of blue chip companies throughout the world
Through a unique blend of consulting, education and software solutions, we enable our clients to make better decisions to improve asset reliability.
www.armsreliability.com