Training/Orientation Instrumentation Section

General Overview of CompanyCHAIRMAN

MD PARCO CEO PAPCO

DMD

COR. AFFAIRS

DMD

OPERATIONS

G.M

Pipe Line

G.M

Refinery

Manager

Pipe Line

Manager

T/Scada

Manager

S&T(Maint)

Manager

S & T

Manager

C & ES

Parco Approved Organogram for Instrumentation Section

MANAGER

S&T (MAINT) P. A

C .E MECH C .E INSTRUMENTATION C .E ELECT

PS-1 Sr. Engineer INST – South

PS-1

INST. Engineer

TS-1 / PS-1 / PQ

TechPS-2

TechPS-3

TechPS-4

InstMech

Inst Mech + Helper

InstMech

PS-3

INST. Engineer

PS-2 / PS-3 / PS-4

TechTS-1 Tech

PS-1TechPQ

Inst Mech Inst Mech

TS-2 Sr. Engineer INST – North

TechTS-2

TechTS-3

TechTS-4

InstMech

Inst Mech

TS-2

INST. Engineer

TS-2 / TS-3 / TS-4

Inst Mech + Helper

Role Of Instrumentation & Control:

To provide the services to maintain the equipment & systems in order and their safe operations by application of field mounted protective devices such as sensors e.g Pressure, Temperature, Level switches & transmitters etc.

INSTRUMENTATION

Instrumentation is a technique which is used to operate / control any system automatically by means of collective/ integrated action of Instruments.

WHY WE USE INSTRUMENTATION:

For System Safety.

Any system / Process operation can be performed manually, but operator can make a mistake due to human error. However Automatic controlled system due to built-in control logic / interlocking ensure the system operation in safe manner.

 TYPES OF CONTROLS:

Open Loop Control (Without Feedback)

Close Loop Control (With Feedback)

Definition of Instrument:

Instrument is a device which is used to determine the quality / quantity of any Substance or Material.

 Types of Instruments:

1. Analytical Instruments

1.1 Laboratory Equipments

1.2 Analyzers

1.3 Hydrometer

1.4 PH. Measurement etc.

2. Industrial Instruments

2.1 Pressure Instruments Pressure IndicatorsPressure TransmittersPressure Switches

Differential Pressure IndicatorsDifferential Pressure SwitchesPressure / Vacuum Air BreatherPressure Control Valve.

Pressure Safety Valves

2.2 Temperature Instruments

Temperature Indicator

Temperature Transmitter

Temperature Switches

 

2.3 Flow InstrumentsFlow IndicatorFlow TransmitterFlow Switches

 

ULTRASONIC FLOWMETER

2.4 Level InstrumentsLevel IndicatorLevel TransmitterLevel Switches

 

2.5 Types Of Control Valves

Ball Valve

Butterfly Valve

Globe Valve

Needle Valve

Diverting / slit Valve

Converging / Combining Valve 

 

2.6 Types of Actuators

PneumaticElectro HydraulicMotorized

Pumping Station Control Philosophy

 

In Case of Low Suction Pressure:

As per given set parameters controller performs its function accordingly.

Suction pressure should not be less than its set pressure SV-1. If it decreases further, as per logical function PCV should start its closure to maintain the suction pressure MV1. If controller fails to maintain the suction pressure MV-1, the station Low Suction Pressure alarm will be appeared at 2.5 Kg/cm2 resulting in Station Shutdown (SSD).

In Case of High Discharge Pressure:

As per given set parameters controller performs its function accordingly.

High discharge pressure MV-2 should not be greater that its set pressure SV-2. If it increases further, as per logical function PCV should starts its closure to control / maintain the discharge pressure MV-2. If controller fails to maintain the discharge pressure MV-2 the High Discharge Pressure alarm will be appeared resulting in Station Shutdown (SSD).

GENERAL OVERVIEW OF STATIONS / TERMINALS

Station & Terminals location along Mainline are fully equipped with sophisticated control system and field instrumentation.

Generally Station / Terminal comprises upon the following setup.

1. Control Building

i. Control Room

ii. MV Room

iii. LV Room

iv. MCC (Motor Control Centre)

v. Battery Charger & UPS Room

2. Main Line Pumps / Manifold

3. Storage Tanks

4. Spillage Tanks

i. Slop Tank

ii. Sump Tank

INSTRUMENT & CONTROL REFERENCE TECHNICAL DOCUMENTS

1.P&IDS

2.Field Wiring Diagram

3.Junction Box Location Plan

4.Area Plot Plan

5.Marshalling Terminal Wiring Diagram (I/O Chart)

6.Hook-up Diagram

7.Equipment Tag List

8. Instrument & Control Cable Trench Details.

P&ID MAINLINE PUMPS PS-1, KORANGI