CHAPTER 11- HAZARDS IDENTIFICATION

Question 1

This is a list of items and possible problems in the process that must be checked.

Answer 1

Process hazards checklists

Question 2

This approach allows the mind to go free in a controlled environment. Various events are suggested for a specific piece of equipment with the participants determining whether and
how the event could occur and whether the event creates any form of risk.

Answer 2

Hazards and operability (HAZOP) studies

Question 3

This can be as simple as an inventory of hazardous materials, or it can be as detailed as the
Dow indexes.

Answer 3

Hazards surveys

Question 4

An effective but less formal type of HAZOP study. The results are highly dependent on the
experience and synergism of the group reviewing the process.

Answer 4

Safety review

Question 5

It is sometimes called hazard analysis.

Answer 5

Risk Assessment

Question 6

_________ can be performed independently from Risk Assessment.

Answer 6

Hazard Identification

Question 7

A risk assessment procedure that determines probabilities is frequently called _____.

Answer 7

Probabilistic Risk Assessment (PRA)

Question 8

This procedure that determines probability and consequences is called_______.

Answer 8

Quantitative Risk Analysis (QRA).

Question 9

This should be applied only during the preliminary stages of hazard identification and should
not be used as a replacement for a more complete hazard identification procedure.

Answer 9

Checklist

Question 10

______ is part of the process used to evaluate if any particular situation, item, or thing may
have the potential to cause harm.

Answer 10

Hazard Identification

Question 11

What does the final rating number in a hazards survey represent?

Answer 11

The relative ranking of the hazard

Question 12

What type of materials does the Dow F&EI specifically address?

Answer 12

Flammable and explosive materials

Question 13

Which of the following is an example of a formal, systematized hazard survey?

Answer 13

Dow Fire and Explosion Index (F&EI)

Question 14

What is the main purpose of the HAZOP study?

Answer 14

To identify hazards in a chemical process facility

Question 15

Who is required to lead a HAZOP study?

Answer 15

A trained HAZOP leader with experience in both the procedure and the chemical
process

Question 16

What is the key feature of the Dow F&EI approach to hazard assessment?

Answer 16

It is a subjective method based on expert judgment

Question 17

What is the first step in the HAZOP procedure?

Answer 17

Break the process flow sheet into a number of process units

Question 18

What is meant by a “study node” in the HAZOP procedure?

Answer 18

A vessel, line, or operating instruction within the process

Question 19

What is the purpose of a hazards survey?

Answer 19

To identify hazardous materials and estimate potential risks

Question 20

What is one potential challenge in conducting a HAZOP study for a large process?

Answer 20

It may require several months of regular meetings

Question 21

What is the main purpose of a safety review?

Answer 21

To identify and eliminate hazards in the design and procedures of a project or operation.

Question 22

What is a “near-miss”?

Answer 22

An incident that could have resulted in a serious consequence but did not.

Question 23

How often should periodic safety reviews be conducted after startup?

Answer 23

Annually, or whenever new equipment, chemicals, reactions, or procedures are
introduced.

Question 24

How many people typically participate in an informal safety review?

Answer 24

Two or three people, including the person responsible for the process.

Question 25

Who typically participates in an informal safety review?

Answer 25

The individual responsible for the process and one or two people experienced
with safety procedures.

Question 26

What is the nature of a safety review?

Answer 26

A cooperative, constructive, and creative process aimed at improving safety and performance.

Question 27

How many steps are involved in a formal safety review process?

Answer 27

threensteps

Question 28

What does the “Raw Materials and Products” section of the formal safety review report focus on?

Answer 28

Describes the hazards and handling problems associated with raw materials and products.

Question 29

What is the main purpose of a formal safety review?

Answer 29

To review new processes, substantial changes in existing processes, and processes
requiring an updated review

Question 30

Which section of the formal safety review report deals with emergency shutdown and fail-safe
procedures?

Answer 30

Safety Procedures.