The HAZOP technique is a qualitative method used to analyze chemical plants and processes. It involves a cross-functional team that meets during the design stage to identify potential deviations from the planned process using guide words. The team analyzes the plant by dividing it into sections and nodes, applying guide words to process parameters at each node, and identifying causes, consequences, protections, and recommendations for any potential deviations. The guide words, along with process parameters, help the team thoroughly examine the plant's design for safety and operability issues. The HAZOP technique provides advantages over other analysis methods but is limited in its qualitative nature.
Basic understanding of HAZOP it covers:
-Basic understanding of HAZOP
-HAZOP requirements
-How it works
-Case study
-HAZOP team
-Advantage & disadvantage
A Hazard and Operability (HAZOP) study is a structured and systematic examination of a planned or existing process or operation in order to identify and evaluate problems that may represent risks to personnel or equipment, or prevent efficient operation.
An intensely participative training course that will both explain the key facets of the HAZOP technique as well as provide ample opportunities for delegates to practice and become familiar with the technique using generic and real life examples.
Hazard and Operability Study (HAZOP) | Gaurav Singh RajputGaurav Singh Rajput
Hazard and operability study | hazop | method of conduction | steps involved by gauravsinghrajput | gauravkrsrajput I Gaurav Singh Rajput I gauravsinghrajput I gauravkrsrajput
Basic understanding of HAZOP it covers:
-Basic understanding of HAZOP
-HAZOP requirements
-How it works
-Case study
-HAZOP team
-Advantage & disadvantage
A Hazard and Operability (HAZOP) study is a structured and systematic examination of a planned or existing process or operation in order to identify and evaluate problems that may represent risks to personnel or equipment, or prevent efficient operation.
An intensely participative training course that will both explain the key facets of the HAZOP technique as well as provide ample opportunities for delegates to practice and become familiar with the technique using generic and real life examples.
Hazard and Operability Study (HAZOP) | Gaurav Singh RajputGaurav Singh Rajput
Hazard and operability study | hazop | method of conduction | steps involved by gauravsinghrajput | gauravkrsrajput I Gaurav Singh Rajput I gauravsinghrajput I gauravkrsrajput
Hazop Fundamentals Online Training iFluidsJohn Kingsley
This course is designed to provide the basics of HAZOP study technique, its outcome and also to perform/review HAZOP report.
Familiarity with HAZOP Terminologies, Methodology, Brief Ideas for taking part /Involve in HAZOP Session. https://trainings.ifluids.com/
The Hazard and Operability Study (HAZOP) is a structured and systematic assessment of a complex system, (such as process facility) in order to identify the hazards that can cause potential danger to Personnel, Equipment, Environment, as well as system operability.
iFluids Engineering is a leading provider of HAZOP study consulting services in India & have extensive experience working on HAZOP studies in India, Qatar, Oman, Tunisia, and many other countries
Basic understanding of HAZOP it covers:
-Basic understanding of HAZOP
-HAZOP requirements
-How it works
-Case study
-HAZOP team
-Advantage & disadvantage
1. HAZOP by DAMO
2. What is HAZOP? HAZOP is an acronym that stands for HAZARD and OPERABILITY Study It was pioneered at ICI (Imperial Chemical Industries, UK) during the late 1960s
3. What is HAZOP? ICI no longer exists today in its original form today (it was taken over by AkzoNobel) but the HAZOP technique that it pioneered survives, thrives and grows in importance every day. HAZOP is mainly a Risk Assessment Technique HAZOP is a Qualitative technique
4. Where is HAZOP used? HAZOP is used in a wide variety of industries and sectors including but not limited to •Chemicals & Petrochemicals •Oil & Gas including refining •Power Generation •Mining & Metals •Pharmaceutical manufacturing
5. How is HAZOP Structured? HAZOP is structured in such a way as to evaluate the design intent of a particular part of a plant, called as a node and then use Guide Words to evaluate deviations from the intent
6. HAZOP Example For example a HAZOP node may be a day tank that pumps a reactant to the plant every day. The design intent is “transfer liquid from tank to plant” Possible Deviations from intent are evaluated using Guide Words such as Less Than, More Than, Reverse, No and others.
7. HAZOP Example Thus possible deviations from the design intent would be Liquid Quantity transferred is Less than intented Liquid flows in Reverse direction (from plant to tank) and so on until all possible devaitions are analyzed
8. HAZOP Example Now every deviation is analysed and Mitigated via adequate measures Mitigations may be multiple for each deviation All nodes need to be analysed in this manner
9. HAZOP Types There are different kinds of HAZOPs •Conceptual •Greenfield •Brownfield •Decommissioning •CHAZOP (Computer HAZOP)
10. HAZOP Team HAZOP is a team effort with a HAZOP Leader, a HAZOP Scribe who documents the analysis either manually (with an Excel sheet) or using a documentation software and Team members who contribute to the analysis
HAZOP, or a Hazard and Operability Study, is a systematic way to identify possible hazards in a work process. In this approach, the process is broken down into steps, and every variation in work parameters is considered for each step, to see what could go wrong. HAZOP’s meticulous approach is commonly used with chemical production and piping systems, where miles of pipes and numerous containers can cause logistical headaches.
HAZOP and Hazard Analysis Systems
Hi @All,
This is a 30 minute introductory presentation of FMEA according to my personal professional view. I have chosen only those references that aligns with what I think best describe this analytical method.
FMEA is a technique developed by military reliability engineers between 1940 2) to 1950 using inductive reasoning (forward logic) single point of systematic failure analysis. FMEA helps to identify potential failure modes based on experience with similar products and processes - or based on common physics of failure logic. Effects Analysis refers to studying the consequences of those failures on different system. FMEA is an examination of all possible failures.
Cheers,
Rufran (091914)
Hazop Fundamentals Online Training iFluidsJohn Kingsley
This course is designed to provide the basics of HAZOP study technique, its outcome and also to perform/review HAZOP report.
Familiarity with HAZOP Terminologies, Methodology, Brief Ideas for taking part /Involve in HAZOP Session. https://trainings.ifluids.com/
The Hazard and Operability Study (HAZOP) is a structured and systematic assessment of a complex system, (such as process facility) in order to identify the hazards that can cause potential danger to Personnel, Equipment, Environment, as well as system operability.
iFluids Engineering is a leading provider of HAZOP study consulting services in India & have extensive experience working on HAZOP studies in India, Qatar, Oman, Tunisia, and many other countries
Basic understanding of HAZOP it covers:
-Basic understanding of HAZOP
-HAZOP requirements
-How it works
-Case study
-HAZOP team
-Advantage & disadvantage
1. HAZOP by DAMO
2. What is HAZOP? HAZOP is an acronym that stands for HAZARD and OPERABILITY Study It was pioneered at ICI (Imperial Chemical Industries, UK) during the late 1960s
3. What is HAZOP? ICI no longer exists today in its original form today (it was taken over by AkzoNobel) but the HAZOP technique that it pioneered survives, thrives and grows in importance every day. HAZOP is mainly a Risk Assessment Technique HAZOP is a Qualitative technique
4. Where is HAZOP used? HAZOP is used in a wide variety of industries and sectors including but not limited to •Chemicals & Petrochemicals •Oil & Gas including refining •Power Generation •Mining & Metals •Pharmaceutical manufacturing
5. How is HAZOP Structured? HAZOP is structured in such a way as to evaluate the design intent of a particular part of a plant, called as a node and then use Guide Words to evaluate deviations from the intent
6. HAZOP Example For example a HAZOP node may be a day tank that pumps a reactant to the plant every day. The design intent is “transfer liquid from tank to plant” Possible Deviations from intent are evaluated using Guide Words such as Less Than, More Than, Reverse, No and others.
7. HAZOP Example Thus possible deviations from the design intent would be Liquid Quantity transferred is Less than intented Liquid flows in Reverse direction (from plant to tank) and so on until all possible devaitions are analyzed
8. HAZOP Example Now every deviation is analysed and Mitigated via adequate measures Mitigations may be multiple for each deviation All nodes need to be analysed in this manner
9. HAZOP Types There are different kinds of HAZOPs •Conceptual •Greenfield •Brownfield •Decommissioning •CHAZOP (Computer HAZOP)
10. HAZOP Team HAZOP is a team effort with a HAZOP Leader, a HAZOP Scribe who documents the analysis either manually (with an Excel sheet) or using a documentation software and Team members who contribute to the analysis
HAZOP, or a Hazard and Operability Study, is a systematic way to identify possible hazards in a work process. In this approach, the process is broken down into steps, and every variation in work parameters is considered for each step, to see what could go wrong. HAZOP’s meticulous approach is commonly used with chemical production and piping systems, where miles of pipes and numerous containers can cause logistical headaches.
HAZOP and Hazard Analysis Systems
Hi @All,
This is a 30 minute introductory presentation of FMEA according to my personal professional view. I have chosen only those references that aligns with what I think best describe this analytical method.
FMEA is a technique developed by military reliability engineers between 1940 2) to 1950 using inductive reasoning (forward logic) single point of systematic failure analysis. FMEA helps to identify potential failure modes based on experience with similar products and processes - or based on common physics of failure logic. Effects Analysis refers to studying the consequences of those failures on different system. FMEA is an examination of all possible failures.
Cheers,
Rufran (091914)
1. HAZOP
(Alfredo Ruggiero)
The Hazop technique is recently expanding, and has been developed by the giant ICI to analyze
the chemical plants, it is a qualitative technique driven by keywords and requires a team of people
coordinated by a cross-functional team leader. The Hazop study should be performed as soon as
possible at the design stage of the production processes. For the analysis required shop drawings
(P & ID; the technique can still be used:
a) in the phase of maximum design drawings of block
b) in the process of design review with final drawings
c) during construction and commissioning
d) during its operation.
The composition of the team must be open to:
1) process designers
2) process engineers
3) maintenance responsible
4) software experts
5) technical supplier companies.
The activity of Hazop team must be recorded on a form where they are registered:
1) No reference
2) word help
3) This deviation
4) causes
5) consequences
6) protection used
7) recommendations
8) responsibility.
The study can start when they are available:
1) the process flow diagram
2) P & ID
3) Lay out the process
4) data sheet of the materials, components, instrumentation, equipment
5) Operating instructions
6) Emergency procedures.
The process of analysis consists of the following phases:
1) dividing the entire system into sections (pumping, mixing, reaction, distillation, solvent recovery
etc)
2) choice of the node in the section that has a set of components and is well defined . A node is
for example a process line or an apparatus.
3) description of the purpose of the node (that is how it should work the process)
4) choice of a process parameter characterizing the node (eg, flow, temperature, pressure,
composition)
2. 5) application of the word help (eg plus, minus, of etc.)
6) identification of deviations in the process. For deviation means the way in which the process
disregards the purpose indicated
7) determination of the causes of deviations
8) assessment of the consequences. The consequences can be both from a safety point of view
and from the point of view of the operability of the system.
9) protection to be provided for preventing the consequences
10) identification of countermeasures, actions to be taken to combat the causes of the deviations
The guide words are the heart dell'hazop, their proper use results in a well-made HAZOP; the most
used words are:
1) no;
1.1 significance: the function is absent, the purpose of the project is not reached
2) more
2.1 meaning: excessive function, beyond the designed
3) less
3.1 significance: insufficient function, lower than planned
4) as well as
4.1 meaning: this is an unwanted function in parallel
5) part of
5.1 significance: only part of the purpose of the planned has been reached
6) other than
6.1 significance: This is an unwanted feature instead of waiting dl project function
7) reverse;
7.1 significance: the opposite activities designed to sample function (flow back to the time of the
shutdown)
8) other words used guide are:
8.1 soon / later
8.2 before / after
8.3 faster / slower
8.4 in any other place.
These words guide together with the process parameters (flow, temperature, pressure,
composition, pH, speed 'tce) give rise to a number of combinations to be analyzed.
Example for reactor batch Checklist
PROBLEMS TO REAGENTS
1) incorrect reagents
2) impurities
3) insufficient amount / high
4) flow rate too fast / slow
5) contamination
EXHAUST PRESSURE SYSTEM
1) packing
2) vent condition biphasic
3. 3) back pressure
4) Corrosion
MALFUNCTION MIXER
1) Insufficient mixing
2) mechanical failure
3) stop for lack EE
4) resulting layering liquid phases
INADEGUATE COOLING
1) ability to inadequate cooling system
2) lack electricity
3) system block pumping / flow
4) failure to coolers / cooling towers
5) failure to Fittings
6) failure to the control system
7) Loss of Coolant
TEMPERATURE
1) sensor failure
2) failure of the control system
3) in erroneous position sensor
FAILURE CONTROL SYSTEM
1) incorrect setting
2) Lack of Air / voltage
3) electrical / mechanical failure
It Is possible to suggest some corrective actions to mitigate the consequences of possible
deviations:
• Failure Alarm stirring with power reagent block
• High temperature alarm and high temperature of the reactor independently from the temperature
control system
• fail safe valves (open) on the cooling system
• flow switches and pressure on the cooling system with alarm and reagent supply blocks
• cooling water temperature indicator output
• maintenance of control procedures on safety valves or bursting disc
• reactor equipped with sprinkler system
• maximum level indicator
• any of the batch discharge tank
• Quality analysis to detect contaminants on reagents
In conclusion the Hazop technique has the advantage of having a series of guide words to identify
deviations spent neglected by other techniques, but it has the disadvantage of being only
qualitative and not to consider the simultaneity of occurrences.
Reference :
1)La prevenzione nell’industria chimica fine e farmaceutica- M. Mazzoli (Ge Specialities)
2)L’analisi dei rischi per la qualità e per l’ingegneria-Tartari .R.- Franco angeli