appendix-1 (hazopworksheets) (1)

KU-0007-

PID-001

ID Guideword Deviation Causes Consequences Safeguards Recommendation Action #

FCV not present 1. Install FCV

Air inlet filter damage2. Install block and bleed

arrangement

Possible liquid formation

FCV not present Install FCV

AIR inlet filter block

C Flow Reverse N/A N/A

Compressor control

malfunction

Inadvertent closing of any

inline isolation valve

E Pressure Low

1.FCV partially closed or

malfuntion

2. Inadvertent handling

3.Blockage of air filter

Line rupture

1. Deferred Production

2. Environmental Damage

1. Pressure transsmitter

available

2. SOPs in place

F Level High N/A

G Level Low N/A

N/A

n/a


Flow


2. High Pressure at

upstream

1. Pressure Transmitter

available

2. SOPs in place

3. Maintenance

procedures incorporated

B

Location

Ref. Drawings

Karachi University

Inlet of CompressorNode-1

Pressure High

1. High velocity may lead

to Erosion

2. Production loss

1. Proper monitoring of

pressure diffrential across

filter

HAZOP WORKSHEET REPORTWELLHEAD COMPRESSION PROJECT AT LATIF-06 AND LATIF NORTH-01

flow MoreA

1. SOP of pressure

monitoring across air filter

is present

TemperatureH

Low / No

High

LowTemperatureI

D


E Pressure Low1.compressor triping

2.due to leakage




available

2. SOPs in place

F Level High N/A

G Level Low N/A

1.temparature transmitter

available

compressor internal available


2. production off spec.

1.Compresor trip

2.plant shutdown

3.chiller work not proper

1.SOP in line

2.chiller schedule

maintance in place.

I Temperature Low

1.TCV not working properly

2.chiller not working

properly

D Pressure High

1. High Pressure at

upstream


to Erosion

1.Compressor control

malfunction

2.HEX choke


available

2. SOPs in place

3. Maintenance


H Temperature High

1. inefficient working of

Chiller.

2.compersor malfunction


malfunction

2.antisurge valve

malfunction

3.may leads to leakage

KU-0007-PID-001

B Flow Low / No1. Production loss

2.plant shutdown1.SOP developed

A flow More


to Erosion

2. Production loss

3.comperssor tripping

1. Proper monitoring

2.high flow triping

available


malfunction

2.

Location Karachi University

Node-3 Chiller upstream and downstream


Ref. Drawings


inlet FCV not present 1. Install FCV

Filter choke

Compressor control

malfunction



E Pressure Low

1.inlet FCV partially closed

or malfuntion

2. Inadvertent handling

3.Blockage of air filter

Line rupture




available

2. SOPs in place

F Level High N/A

G Level Low N/A

I Temperature Low n/a


2. High Pressure at

upstream


available

2. SOPs in place

3. Maintenance


H Temperature High N/A

D Pressure High

A flow More


to Erosion

2. Production loss



filter

B Flow Low / No1. Production loss

2.plant shutdown



filter

2.SOP developed


Location Karachi University

Node-2 compressor Upstream

Ref. Drawings KU-0007-PID-001

Session No.

System

ID Guideword Deviation Causes Consequences Safeguards Recommendation Action # Action

Choke valve FCV-612 fail

open

FIC-612 malfunction

Compressor overspeed

Compressor by-pass valve

leakage or passes

FIC-671 malfunction leads

to fully open (more than

required)

FCV-672 stuck close

Inadvertent opening of

isolation valve of vent/PSV-

617A/B passing

Line rupture

1. Fire Hazard

2. Production Loss


1. F&G Detection are in

place

2. Pressure alarm low low

& trip (16-PALL-615)


close



Choking of Cooler(E-1660)

tubes

C Flow Reverse

1. Compressor by-pass

valve leakage or passes

2.

1. More flow at

compressor suction


NRV located at by-pass


close

1. High Pressure at

upstream



Choking of FE-612

Compressor control

malfunction

Water slugging

FCV-671/672 stuck close

Choking of Cooler tubes

E Pressure Low

1. Choke valve partially

(less than required)

closed/FIC-612 malfunction

2. Wellhead shutdown

3. Inadvertent opening of


617A/B passing

4. Choking of cooler tubes

5. FCV-672 stuck open


2. More flow towards FCV-

671



3. SOPs in place

Line rupture

1. Fire Hazard

2. Production Loss



place



3. Adequate piping design

F Level High N/A

G Level Low N/A




2. Pressure alarm high

high & trip (16-PAHH-615)

3. SOPs in place

4. Maintenance


5. Pigging procedures in

place

D Pressure High

Flow More


to Erosion

2. Production loss

3. Low pressure at

compressor suction (A-

480)

1. Erosion Probe Installed


3. Compressor overspeed

trip

4.

B Flow Low / No


2. High Pressure at

upstream





3. SOPs in place

4. Maintenance



place

Ref. Drawings 5007-11-16-10-PD-603-01, 5007-11-16-10-PD-604-01, 5010-11-16-10-PD-116-01

A


Location ENAR Head Office

Node-2 Downstream of Wellhead Latif-6 to the Suction of Wellhead Compressor A-470 & A-480 (FCV-671)

01 1ST OCT - 2012

Resp.Target

DatesStatus Remarks

5007-11-16-10-PD-603-01, 5007-11-16-10-PD-604-01, 5010-11-16-10-PD-116-01


Date:

Wellhead compression for LATIF-06 AND LATIF NORTH-01

Session No.

System



open

FIC-612 malfunction

Compressor overspeed

Compressor by-pass valve

leakage or passes

FIC-672 malfunction leads

to fully open (more than

required)

FCV-671 stuck close

Inadvertent opening of


617A/B passing

Line rupture

1. Fire Hazard

2. Production Loss



place




close



Choking of Cooler(E-1660)

tubes

C Flow Reverse

1. Compressor by-pass

valve leakage or passes

2.

1. More flow at

compressor suction


NRV located at by-pass

B Flow Low / No


2. High Pressure at

upstream





3. SOPs in place

4. Maintenance



place


A Flow More


to Erosion

2. Production loss

3. Low pressure at

compressor suction (A-

480)

1. Erosion Probe Installed


3. Compressor overspeed

trip

4.




Session No.

System







close

1. High Pressure at

upstream



Choking of FE-612

Compressor control

malfunction

Water slugging

FCV-671/672 stuck close

Choking of Cooler tubes

E Pressure Low

1. Choke valve partially

(less than required)

closed/FIC-612 malfunction

2. Wellhead shutdown



617A/B passing

4. Choking of cooler tubes

5. FCV-672 stuck open


2. More flow towards FCV-

671



3. SOPs in place

Line rupture

1. Fire Hazard

2. Production Loss



place




F Level High N/A

G Level Low N/A

D Pressure High





3. SOPs in place

4. Maintenance



place


01 1ST OCT - 2012

Resp.Target

DatesStatus Remarks

5007-11-16-10-PD-603-01, 5007-11-16-10-PD-604-01, 5010-11-16-10-PD-116-01


Date:


Session No.

System


2. Pipeline rupture

2. Production Loss

3. Fire Hazard

4. Environmental

Consequences


1. Compressor trip1. Deferred Production

2. Water slugging

2. High Pressure at

upstream

Possibility of high level at

inlet separator (V-1,V-2)

PAHH-3932 alarm & trip

High level tripping

3. Inadvertent closing of

valve at manifold/tie-insDeferred Production

4. Line rupture

1. Production Loss

2. Fire Hazard

3. Environmental

Consequences

Adequate piping design

C Flow Reverse Refer reverse flow node-1

Refer to High pressure

node-1

Inadvertent closure of any

manual valve upto tie-in

High pressure leads to line

rupture


1. Compressor overspeed1. Deferred Production

1. Compressor Trip

Pressure High



Node-3 Discharge Flow Line of wellhead Compressor A-490

Ref. Drawings 5010-11-16-10-PD-115-01, 5003-11-16-10-PD-102-00,

A Flow More

B Flow Low / No

D

Session No.

System




Node-3 Discharge Flow Line of wellhead Compressor A-490


Compressor trip Deferred Production

Low Compressor speed

Line rupture

1. Production Loss

2. Fire Hazard

3. Environmental

Consequences


F Level High N/A

G Level Low N/A

Temperature securities

available in vendor

package (Annex-01)

Consider installation of

Temperature Transmitter

at discharge of

compressor

Pressure LowE

High

I Temperature Low

H Temperature

02 2nd OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5010-11-16-10-PD-115-01, 5003-11-16-10-PD-102-00,

Session No.

System


2. Pipeline rupture1. F&G Detection system



any bleed valve1. SOPs in place

1. Compressor trip1. Deferred Production

2. Water slugging/High

level at inlet separator (V-

1)

2. High Pressure at

upstream




High level tripping



4. Line rupture (will cause

no/low flow at

downstream)



any bleed valve

6. Malfunction of

compressor recycle valve

1. Deferred Production 1. Low pressure alarm at

compressor discharge

To be checked with

vendor for further

safeguards

C Flow Reverse No credible scenario

1. Water slugging

1. High Pressure at

upstream




High level tripping



1. Compressor overspeedHigh velocity may lead to

erosion in piping

1. Compressor Overspeed

Tripping




Node-4 Discharge Flow Line of wellhead Compressor A-470/A-480

D

B

Ref. Drawings 5010-11-16-10-PD-116-01, 5007-11-16-10-PD-604-01

A Flow

1. Production Loss

2. Fire Hazard/Asset loss

3. Environmental

Consequences

Flow Low / No

1. Production Loss

2. Fire Hazard

3. Environmental

Consequences

HighPressure

More

Session No.

System




Node-4 Discharge Flow Line of wellhead Compressor A-470/A-480

Ref. Drawings 5010-11-16-10-PD-116-01, 5007-11-16-10-PD-604-01

E 1. Compressor trip1. Deferred Production


valve at compressor

discharge

Deferred Production

3. Line rupture (will cause

no/low flow at

downstream)



any bleed valveSOPs in place

5. Malfunction of

compressor recycle valve

1. Deferred Production 1. Low pressure alarm at

compressor discharge

To be checked with

vendor for further

safeguards

F Level High N/A

G Level Low N/A

Temperature securities

available in vendor

package (Annex-01)

Consider installation of

Temperature Transmitter

at individual discharge of

compressors

Pressure Low

H Temperature High

I Temperature Low

1. Production Loss

2. Fire Hazard

3. Environmental

Consequences

01 1ST OCT - 2012

Resp.Target

DatesStatus Remarks



Date:

5010-11-16-10-PD-116-01, 5007-11-16-10-PD-604-01

Session No.

System


C Flow ReverseD Pressure HighE Pressure Low



Node-5 Latif-North-1 Sour Gas Conditioning Skid


A Flow More

B Flow Low / No

Session No.

System




Node-5 Latif-North-1 Sour Gas Conditioning Skid


F Level High

G Level Low

J Corrosion SS tubing shall be used

K Fire / Explosion

LPigging

Operation

M Maintenance

N Design Concern

The tie-in connection

from sour gas skid to be

taken of 1/2 inch for

compressor package

High

I Temperature Low

H Temperature

01 1ST OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5003-11-16-10-PD-101-00, 5003-11-16-10-PD-105-00,

Session No.

System


Instrument Gas FailureLow flow alram (FSL-

302,303)

PSV Passing

Inadvertent closure of

isolation valves for pumpsSOPs incorporated

Choking of strainerMaintenance procedures

incorporated/SOPs

C Flow ReverseTripping of low pressure

pumps (P-1608 A/B)

NRV installed at pumps

discharge

D Pressure HighInadvertent closure of

isolation valves for pumpsPSV available at discharge

Choking of strainer

Pump failure

Compressor trip

Inadvertent opening of any

bleed valveSOPs incorporated

Low

CI layer shall not be

formed leading to

corrosion in line

Preventive maintenance



Node-6 Latif-North-1 Corrosion Inhibitor System

B Low / No


A Flow More

Flow


formed leading to

corrosion in line

PressureE

Session No.

System




Node-6 Latif-North-1 Corrosion Inhibitor System


F Level High

G Level Low

I Temperature Low

H Temperature High

01 1ST OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5003-11-16-10-PD-102-00, 5003-11-16-10-PD-104-00,

Session No.

System


C Flow ReverseD Pressure HighE Pressure Low



Node-7 Latif-06 Sour Gas Conditioning Skid


A Flow More

B Flow Low / No

Session No.

System




Node-7 Latif-06 Sour Gas Conditioning Skid


F Level High

G Level Low

J Corrosion SS tubing shall be usedK Fire / Explosion

LPigging

Operation

M Maintenance

N Design Concern

The tie-in connection

from sour gas skid to be

taken of 1/2 inch for

compressor package

High

I Temperature Low

H Temperature

02 2nd OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5007-11-16-10-PD-603-01, 5007-11-16-10-PD-605-01,

Session No.

System


Instrument Gas FailureLow flow alram (FSL-

639,640)

PSV Passing

Inadvertent closure of

isolation valves for pumpsSOPs incorporated

Choking of strainerMaintenance procedures

incorporated/SOPs

C Flow ReverseTripping of low pressure

pumps (P-1661 A/B)

NRV installed at pumps

discharge

D Pressure HighInadvertent closure of

isolation valves for pumpsPSV available at discharge

Choking of strainer

Pump failure

Compressor trip

Inadvertent opening of any

bleed valveSOPs incorporated

Preventive maintenance

Flow Low / No


formed leading to

corrosion in line

E Pressure Low


formed leading to

corrosion in line



Node-8 Latif-06 Corrosion Inhibitor System


A Flow More

B

Session No.

System




Node-8 Latif-06 Corrosion Inhibitor System


F Level High

G Level Low

J Corrosion

K Fire / Explosion

LPigging

Operation

M Maintenance

N Design Concern

I Temperature Low

H Temperature High

02 2nd OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5007-11-16-10-PD-604-01, 5007-11-16-10-PD-606-01,

Session No.

System


A Flow More

Inadverdent opening of

Isolation Valves on

depressuring line

1. High Velocity

1.Globe valve at

depressing line in locked

closed.

2. SOPs are in placeN/AN/AN/AN/A

C Flow Reverse No credible sceniros

D Pressure High

E Pressure Low

F Level High

G Level Low



Node-9 Latif North-01 & Latif-06 vent stack. (for Tie-ins)

Ref. Drawings 5007-11-16-10-PD-603-01, 5010-11-16-10-PD-116-01,5003-11-16-10-PD-101-00,5010-11-16-10-PD-115-01,

B Flow Low / No

Session No.

System




Node-9 Latif North-01 & Latif-06 vent stack. (for Tie-ins)

Ref. Drawings 5007-11-16-10-PD-603-01, 5010-11-16-10-PD-116-01,5003-11-16-10-PD-101-00,5010-11-16-10-PD-115-01,

Low temperature due to

depressurization

1.Hydrate formation in

vent & drain line.1.SOP

J Corrosion

K Fire / ExplosionLightening occurs at the

time of venting.

1.Asset damage.

2. Loss of production.

1. SOP available.

2. Stack has been sized on

API-521 considering

radiation and dispersion.

LPigging

Operation

M Maintenance SOP

N Design Concern

1. Adequacy of existing

vent stack of latif-North-1

and Latif 06 to be

checked.

2. Back pressure as a

result of Venting of

Compressor at wellhead

PSV shall also be

checked.

High

I Temperature Low

H Temperature

02 2nd OCT - 2012

Resp.Target

DatesStatus Remarks


Date:


5007-11-16-10-PD-603-01, 5010-11-16-10-PD-116-01,5003-11-16-10-PD-101-00,5010-11-16-10-PD-115-01,

appendix-1 (hazopworksheets) (1)

Documents