HAZOP - Condensate Lines

8/10/2019 HAZOP - Condensate Lines

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HAZOP RECORD FORMFacility/Project

Drawing No./Procedure

Subject

Condensate lines from the condensers to the

holding tank

DEVIATION CAUSE EFFECT SAFEGUARDS ACTION

No flow

High Flow

Pump malfunction

Closure of V 22 18

Closure of V 22 19

Closure of V 22 17

Overheating in E112

P125 failure would result in no coolingwater running through the heat

exchanger.

Closure of this valve would increase the

pressure of the condensate line exitingE113. This would also cause an

increased pressure in V147. This would

change the pressure gradient and force

the liquid onto the vacuum lines causingmixing in the system. There is potential

for vessel E113, V147 and V150 todamage and rupture.

This would also cause an increasedpressure in V148. This would change

the pressure gradient and force theliquid onto the vacuum lines causing

mixing in the system. V148 and V150

could damage and rupture.

The closure would cut off cooling watersupply to E113. This would result in no

condensate being formed in the shelland tube heat exchanger.

Due to overheating in E112 more than

the required/optimal amount of vapouris fed into E113 uncondensed. This

increases the flow rate of condensate in

Pressure transmitter and temperature

indicator placed on the inlet to the pump

Install a flow meter across

the value to ensure there isalways flow when the

system is under operation.

Install a flow meter acrossthe value to ensure there is

always flow when thesystem is under operation.

High temperature and

pressure alarms. Alsoensure good maintenance.

Date

Team Members


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Less flow

CONSIDER REVERSE FLOW

High temperature

More cooling water supplied toE113.

Temperature of cooling water

less than estimated

Less cooling water to E113.

Temperature of cooling water

less than estimated

Leaks in pipeline

Ambient temperature rises.Either environmental such as a

heat wave or human error such

as using a fire torch or weldingmachine near the pipelines and

heat exchangers. Cooling

waters efficiency reduces.

the stream and resulting in a increase in

pressure and filing up V150 at a fatserrate then estimated. This would also put

increase pressure on V147.

More than optimal amount of vapourcondenses. This increases the flow rate

of condensate in the stream andresulting in a increase in pressure and

filing up V150 at a fatser rate then

estimated. This would also put increasepressure on V147

More than optimal amount of vapour

condenses. This increases the flow rate

of condensate in the stream and

resulting in a increase in pressure andfiling up V150 at a fatser rate thenestimated. This would also put increase

pressure on V147

This would result in less condensatebeing formed in the shell and tube heat

exchanger

This would result in less condensate

being formed in the shell and tube heatexchanger

N-heptane hazardous. It is flammable

and can cause skin irritation. This

causes a lot of potential risk if released.

N-heptane is flammable. And increasein the temperature can build up pressure

or act as a ignition source.

Pressure transmitter placed on the inlet tothe pump. Drain on V150.

Temperature indicator

Temperature indicators

High pressure alarms. Alsoensure good maintenance.

Flow meter with a highlevel alarm on V150

Temperature alarms

connected to the indicator.

Flow meter with a high

level alarm on V150

Educate people on the

hazards of n-heptane.

Ensure it is a no smokingzone and people wear

protective clothing. Installflow indicators between

very long pipelines.

Higher temperature alarms

attached with indicator.Educate staff on the

hazards of n-heptane.


protective clothing.


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Low Temperature

High Pressure

Low pressure

Desired product not achieved

Maintenance

Power

Check freezing point

Closure of V 22 18

Closure of V 22 19

Leaks in pipeline

Over condensation inE112

Excess cooling water

Closure of this valve would increase thepressure of the condensate line exiting

E113. This would also cause anincreased pressure in V147. This would

change the pressure gradient and force

the liquid onto the vacuum lines causingmixing in the system. There is potential

for vessel E113, V147 and V150 todamage and rupture.

This would also cause an increased

pressure in V148. This would changethe pressure gradient and force theliquid onto the vacuum lines causing

mixing in the system. V148 and V150

could damage and rupture.

N-heptane hazardous. It is flammable

and can cause skin irritation. Thiscauses a lot of potential risk if released.

Install a flow meter across

the value to ensure there is

always flow when thesystem is under operation.

Install a flow meter acrossthe value to ensure there is

always flow when the

system is under operation.

Educate people on thehazards of n-heptane.


protective clothing. Install

pressure indicatorsbetween very long

pipelines.

Documents

HAZOP - Condensate Lines