INTRODUCTION & BASIS OF HAZOP (Hazard and Operability)

Hazards Identification During Operation

Objective Of The Presentation

• Give the knowledge or an understanding of analysis and training in how to apply their abilities to improve human

• Give an understanding about adequate safeguard (existing setup/new design) to control the risk.

Agenda

• What is HAZOP

• The main purpose/objectives.

• Advantages of HAZOP

• The basic concept

• Methodology

• Examples

What is “HAZOP” ?• Hazards and operability are a systematic, logical approach

to determining hazards.

• Hazards; which is defined as ”deviation” within parameters that may have dangerous ”consequences”.

• The parameters are; flow, temperature, pressure etc.

• HAZOP is a team work, people representing from different parts in a plant.

• HAZOP is basically for safety.

Purpose of the HAZOP

• To investigate how the system or plant deviate from the design intent.

• Create risk for personnel and equipment and operability problems.

Objectives of HAZOP• Any perceived DEVIATIONS from intended

design/operation.

• The CAUSES for those deviations

• The CONSEQUENCES of those perceived deviations.

• SAFEGUARDS to prevent causes and mitigate consequences of the perceived deviation.

• Recommend ACTIONS in design and operation to improve safety and operability of the plant

KEYWORDS

PRIMARY SECONDARY

HAZOP Example

HAZOP Example

• Deviation: Keyword being applied is FLOW/NO. • Cause: Potential causes that would result in deviation is the strainer ”S” blockage due to impurities in the dosing tank T might cause No Flow. • Consequences: Loss of dosing results incomplete reaction in V• Safeguard: Local pressure gauge in discharge from pump might indicate problem was arising".• Action: Fit a differential pressure gauge across the strainer, with perhaps a high dP alarm to give clear indication that a total blockage is imminent.

ADVANTAGES OF HAZOP

• It gives the design ideas with imaginative anticipation of deviations.

• HAZOP methodology is widely used to aid LOSS PREVENTION.

• Can be used almost all operations in process industries.

• No special level of academic qualification is required to perform HAZOP.

Major accidents/hazards in pharmaceutical plants/companies in recent years

• In 2012, there were 3 fatalities and 18 injuries from an explosion at Neptune Technologies. There was 1 death and 8 injuries at Teva Croatia.

•In 2012, there was an explosion at an API plant in Punjab causing 4 deaths and 17 injuries.

•In 2013, Amgen had an flammable explosion that injured two workers at their South San Francisco branch. Sandoz had a fire which caused major drug shortages but no one got hurt.

Always Remember!

• A single hazard could potentially lead to multiple forms of harm