HAZOP Template

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item

Guide Word

Production of Nitrobenzene Group 18 05.03.2015 1 Inlet valve to the decanter P-0003 (SHT 1 of 3) Possible Causes

Consequences

1

1

1 High Level

Feed inlet flow rate too high

1) High Pressure 2) High water level in the tank is dangerous

1

1

2

Blockage of outlet pipeline Same as Item 1.1.1

1

1

3

Control valve malfunction Same as Item 1.1.1

1

2

1 High Flow

Feed inlet flow rate too high

1) High Pressure 2) Equipment takes time to separate the chemicals

1

2

2 No Flow

No feed input

1) No flow rate causing no products

Pipeline burst and leakage Same as item 1.2.2 Blockage of pipeline

Same as item 1.2.2

Page 1 of 12

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item

Guide Word

Production of Nitrobenzene Group 18 05.03.2015 1 Inlet valve to the decanter P-0003 (SHT 1 of 3) Possible Causes

Page 2 of 12

Consequences

HAZOP Worksheets

Safeguards

Recommendations

1) High level alarm is installed at the reactor. 2) Manual control valve is installed to prevent emergency. Same as Item 1.1.1 Same as Item 1.1.1

1) High flow rate control valve is installed before the pipe enter the equipment.

1) Install flow reader before the chemicals into the equipment. Same as item 1.2.2 Same as item 1.2.2

Page 3 of 12

Party Responsible -

HAZOP Worksheets

Safeguards

Recommendations

Page 4 of 12

Party Responsible

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item

Guide Word

2 2 2

1 1 1

1 No Flow 2 3

2

2

1 More Flow

2 2 2

3 3 3

1 Less Flow 2 3

2

4

1 Reserved Flow

2

5

1 High Pressure

2

6

1 Low Pressure

2

7

1 High Temperature

2

8

1 Low Temperature

2

9

1 High Level

Production of Nitrobenzene Group 18 31/Mar/2015 2 Example: “Cooling water for R-101 Reactor”, or “piping from E-103 Cooler to V-101 Separator” P&ID drawing number. Example: P-0005 (SHT 1 of 3) Possible Causes

Page 5 of 12

Consequences

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item 2

10

Guide Word

Production of Nitrobenzene Group 18 31/Mar/2015 2 Example: “Cooling water for R-101 Reactor”, or “piping from E-103 Cooler to V-101 Separator” P&ID drawing number. Example: P-0005 (SHT 1 of 3) Possible Causes

1 Low Level

Page 6 of 12

Consequences

HAZOP Worksheets

103 Cooler to V-101 Separator”

Safeguards

Recommendations

Page 7 of 12

Party Responsible

HAZOP Worksheets

103 Cooler to V-101 Separator”

Safeguards

Recommendations

Page 8 of 12

Party Responsible

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item

Guide Word

3 3 3

1 1 1

1 No Flow 2 3

3

2

1 More Flow

3 3 3

3 3 3

1 Less Flow 2 3

3

4

1 Reserved Flow

3

5

1 High Pressure

3

6

1 Low Pressure

3

7

1 High Temperature

3

8

1 Low Temperature

3

9

1 High Level

Production of Nitrobenzene Group 18 31/Mar/2015 3 Example: “Cooling water for R-101 Reactor”, or “piping from E-103 Cooler to V-101 Separator” P&ID drawing number. Example: P-0005 (SHT 1 of 3) Possible Causes

Page 9 of 12

Consequences

HAZOP Worksheets Project Title: Group No.: Date: Node No.: Node Description: Drawing No.: Item 3

10

Guide Word

Production of Nitrobenzene Group 18 31/Mar/2015 3 Example: “Cooling water for R-101 Reactor”, or “piping from E-103 Cooler to V-101 Separator” P&ID drawing number. Example: P-0005 (SHT 1 of 3) Possible Causes

1 Low Level

Page 10 of 12

Consequences

HAZOP Worksheets

103 Cooler to V-101 Separator”

Safeguards

Recommendations

Page 11 of 12

Party Responsible

HAZOP Worksheets

103 Cooler to V-101 Separator”

Safeguards

Recommendations

Page 12 of 12

Party Responsible