Dcs Specification

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GENERAL SPECIFICATION92/98 bd Victor Hugo92115 CLICHY FranceTel 33 (0) 1 41 06 30 00Tlex 620 428 SOFRGAZFax 33 (0) 1 47 37 16 27E-mail : [email protected] INSTRUMENTATION

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FUJIAN LNG TERMINAL AND TRUNKLINES PROJECT

DISTRIBUTED CONTROL SYSTEM

Date :18/12/03

Etablis. / Establ.V. VIGUIER

Projet / ProjectAG. BLAZQUEZ

EMISSION POUR / ISSUE FORISSUED FOR FEED

N RC443.SG.000.2900.1000

01.24 Rv. /Amend.

1Vrif. / CheckL. BROCCOLI

Approbat. /Approval

N FJLNG-SPC-TS-IN-002Page 1/40


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Date N FJLNG-SPC-TS-IN-002Page : 2/42

REVISION RECORD

Rev. Date Established Checked Project Issue for

0 0/11/03 V. VIGUIER LP. BROCCOLI AG. BLAZQUEZ First issue

1 18/12/03 V. VIGUIER LP. BROCCOLI AG. BLAZQUEZ Approved


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CONTENTS

1 INTRODUCTION

1.1 PURPOSE OF THIS DOCUMENT

1.2 GENERAL PROCESS DESCRIPTION

1.3 REFERENCES, CODES AND STANDARDS

1.4 ENVIRONMENTAL CONDITIONS

1.5 ABBREVIATIONS

2 CENTRAL CONTROL SYSTEM (CCS)

2.1 CCS CONCEPT

2.2 DISTRIBUTED CONTROL SYSTEM

3 GENERAL

3.1 DEFINITIONS OF THE CONTROL LEVELS

3.2 GENERAL DESCRIPTION OF THE SYSTEM

3.3 FUNCTIONALITY AND GENERAL PERFORMANCES

4 ACQUISITION AND CONTROL SYSTEM

4.1 HARDWARE CHARACTERISTICS

4.2 SOFTWARE CHARACTERISTICS AND PERFORMANCES

5 SUPERVISORY SYSTEM

5.1 SYSTEM ORGANISATION



6 COMMUNICATION SYSTEM

6.1 INTERNAL DCS COMMUNICATION BUS

6.2 COMMUNICATION WITH THIRD PARTY SYSTEMS

7 ASSOCIATED SYSTEMS REQUIREMENT


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8 DOCUMENTATION

8.1 HARDWARE DOCUMENTATION

8.2 SOFTWARE DOCUMENTATION

8.3 INSTRUCTION MANUALS

9 DCS ACCEPTANCE TESTS

9.1 MANUFACTURER INTERNAL TEST (IFAT)

9.2 FACTORY ACCEPTANCE TESTS (FAT)

9.3 SITE ACCEPTANCE TEST(SAT)


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1 INTRODUCTION

1.1 PURPOSE OF THIS DOCUMENT

This general specification covers the minimum requirements for the design, supply,configuration, programming et tests of the Distributed Control System to beinstalled for the FUJIAN LNG TERMINAL project.

1.2 GENERAL PROCESS DESCRIPTION

The Fujian LNG Terminal is an onshore import terminal with LNG carriersunloading facilities, LNG storage with vaporising facilities and gas export capability.

The LNG terminal will be located at Xiuyu Harbor north shore development zone ofPUTIAN city, Fujian province.

Approximate latitude and longitude are North 25 12, East 110 59.

The process of the Terminal can be described into three main functional sections:

LNG unloading

LNG carriers are berthed along terminal jetty. LNG is pumped out from ship usingship pumps and sent to storage tanks through 3 unloading arms and an unloadingcollector routed to shore on an aerial trestle. Part of the vapour displaced during

tank filling operation is sent back to carrier via a vapour return line connected toship by means of a gas return arm.

LNG storage

LNG is stored in tanks at pressure close to atmosphere (two identical tanks areinstalled for phase I). Tanks pressure is mainly controlled by withdrawal of boil-offgas by reciprocating compressors (2 installed). In case of abnormal pressureincrease in tank, boil-off gas in excess is sent to flare.

LNG / NG send out

LNG is withdrawn from tank by cryogenic pumps (two per tanks). Simultaneousoperation of three in-tank pumps is required to provide peak flow. Part of thepumped flow can be sent to an LNG trucks loading station. Main flow is sent to theHP send-out pumps and to the vaporisers.

Upstream HP send-out pumps, the LNG flow is split in two streams. One stream isrouted to a recondenser where it is put in contact with compressed boil-off gas tomake it condense. The rest of the flow bypasses the recondenser.

Downstream recondenser, low pressure LNG is pressurised by cryogenic pumpsand sent to vaporisers. There are two different vaporisation lines:


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a high pressure line (HP system) that supplies the trunklines to Wenzhou andto Zhangzhou,

a medium pressure line (MP system) dedicated to Putian power plant.

Three identical HP pumps and three identical MP pumps are installed for phase I.Parallel operation of two pumps is required to provide peak flow.

Under normal operating conditions LNG is vaporised by Open Rack Vaporisers(HP ORV and MP ORV) using seawater as warm fluid. For each pressure level (HPand MP), three ORV are installed during phase I with one spare.

At terminal boundary, gas is delivered to two distribution pipelines. One meteringstation is provided on each export line, upstream Terminal battery limit.

1.3 REFERENCES, CODES AND STANDARDS

All equipment constituting the Distributed Control System shall be designed andmanufactured in accordance with the last issues of regulations, codes, norms andstandards listed in the specification Applicable Codes and Standards NRC443.LL.000.B100.001.

All the requirements of national legislation, regulations and codes, includingregulations on environmental protection and safety, in force at site, takeprecedence over the minimum requirements cited in the context of thisspecification and must be complied with, even without explicit mention.

The General Control System Overview architecture drawing numberRC443.PL.I040.0001 has to be read in conjunction with this document.

1.4 ENVIRONMENTAL CONDITIONS

Refer to General Design requirement technical note NRC443.NT.000.P030.0001

1.5 ABBREVIATIONS

The following abbreviations are used :

BOG Boil Off Gas

CCS Central Control system

CPU Central Processing Unit

DCS Distributed Control System

ESD Emergency Shut Down System

FACP Fire and Gas Alarm Control Panel

FGM Fire and Gas Mimic

FMS Facilities Management System


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FOC Fibre Optic Cable

FTA Field terminal Unit

F&G Fire and Gas System

I/O Input / Output

TR Technical Room

LCD Liquid Crystal Display

MCC Motor Control Centre

ORV Open Rack seawater Vaporiser

OTS Operator Training System

PLC Programmable Logic Controller

PMS Power Management System

SIL Safety Integrated Level

SCV Submerged Combustion Vaporiser

UPS Uninterruptible Power Supply

2 CENTRAL CONTROL SYSTEM (CCS)

2.1 CCS CONCEPT

The Central Control System (CCS) will comprise a group of related, integratedcontrol systems in charge of the control and safety of FACILITIES operations.

Major systems in the CCS are:

a. DCS Distributed Control Systems

b. ESD Emergency Shutdown System

c. F&G Fire & Gas System (including spillage detection)

d. PMS Power Management System

e. PA/GA Public Address and Gas Alarm System

f. Packages control systems (such as Tank Gauging Systems,BOG compressors, SCV, ORV, emergency diesel generators,and air & nitrogen systems, unloading arms)

g. Metering systems

h. Instrumentation

This specification covers the requirements for the Distributed Control System(DCS) only.


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2.2 DISTRIBUTED CONTROL SYSTEM

The Distributed Control System (DCS) will be the primary control system and thebackbone of the CCS in order to control and supervise the Terminal operations.

The CCS will utilise the DCS capabilities for managing CCS data and presentingthem to the operator via interactive workstations.

DCS shall be in charge of:

Operator Interface

Alarm Management

Historisation and reporting

Regulatory Control, Sequencing , Logic and Monitoring Functions

Interface to other PCS systems

Interface to other third party systems

3 GENERAL

3.1 DEFINITIONS OF THE CONTROL LEVELS

The following definitions are used in this document:

Level 0: Instrumentation

This is the lowest level of the hierarchically ordered System structure. It regards allthe field instruments like sensors, initiator and actuators. (They are not covered bythis specification, refer to "Instrumentation General Specification N RC443.SG-000.1500.0100)

Level 1: Acquisition and control system

This is the intermediate level of the hierarchically ordered structure of the System.It regards all the System equipment dedicated to Data Acquisition, Control,Automation and functions.

Level 2: Supervisory system

This level regards the System equipment having the function of HUMAN-MACHINEInterface (HMI).

Level 2 is the supervisory level of the Plant.

Level 3: Management system

This is the level dedicated to Advanced Control and Plant Optimisation (notcovered by this specification).


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3.2 GENERAL DESCRIPTION OF THE SYSTEM

The system shall be based on microprocessor modules for the control and dataacquisition. It shall be equipped with resident software to carry out the regulatorycontrol algorithms, the interlock and sequential control functions.

The operator interface shall be implemented through interactive workstationsequipped with data display console, keyboard and printer and capable ofmanaging the supervision, control, graphic presentation, alarm, message,diagnostic functions.

An engineer workstation dedicated to the configuration of the System and theimplementation/modification of the user software shall also be provided.

The control modules and workstations shall be connected by a datacommunications system.

The system shall be capable of carrying on a dialog through an appropriateinterface module with external electronic computers and/or data communicationsstandard networks (Ethernet or equivalent).

3.2.1 Level 1: Acquisition and Control System

The Level 1 equipment shall be suitable to carry out the following functions:

Interface with field instrumentation such as transmitters, initiators, switches and

final elements.

Acquisition of process data from sensors to allow monitoring of processvariables.

Performance of basic control functions.

Performance of calculation functions including arithmetic computation.

Performance of complex control functions including adaptive gain, feed forward,signal selection, etc

Execution of logic for performance of interlock, automation, and sequentialfunctions.

Execution of combined regulatory and logic functions.

Handling of sequence of events with time recording for preparing alarmsmonitoring and data logging performed on level 2

Transfer to Level 2 of all data, measurements and acquired events, calculatedor produced by Level 1 itself.

Receive from Level 2 commands and set points.

3.2.2 Level 2 : Supervisory System

Supervisory system represents the Operator's interface towards the Plant.


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It handles and allows the following functions:

Indication of all analogue or digital process variables, open or closed loops andall related parameters

Manipulation of control loops, including: set-point change, operating mode,output, tuning, computation constants

Alarm announcing

Display of lived process graphics

Logging and possibility of both historical and trend recording

Display of sequence of events.

Display of self-diagnostics messages.

Still at Level 2, but through separate and independent equipment, the followingfunctions are handled in addition to the above mentioned ones:

Changes, additions, canceling to the configuration of Level 2 (user software) orof the lower levels.

3.2.3 DCS Communication System

The equipment components forming the various levels are interconnected througha communication system allowing the functions described in the followingparagraphs.

The communication system shall be based on an open architecture using TCP/IPprotocol or equivalent in a client/server environment.

Also the communication medium shall be of standard manufacturers (Ethernet orequivalent).

Proprietary communication systems are also acceptable; but they shall besubmitted to review and approval. They shall be able to communicate with opensystems based on TCP/IP protocol or equivalent.

3.2.4 Interface with other systems

DCS shall also communicate with CCS systems, third party control systems andmanagement computers.

3.3 FUNCTIONALITY AND GENERAL PERFORMANCES

The DCS shall provide the following functionality and performances:

3.3.1 Capacity

The DCS must be capable of supporting the entire plant process units. Speed ofresponse for both control functions and man-machine interface should not be


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degraded under any conditions (such as, for instance, alarm overload) taking intoaccount that this is a relatively fast-responding process.

Multiple local area networks are allowed provided that the overall functionality issatisfied.

3.3.2 Reliability and Availability

The system shall be implemented by holding reliability in the utmost considerationand in particular the selection of the electronic components and the individualentities forming the system is carried out on the basis of a continuous operatingtime of 2 years.

Availability

The System shall be highly reliable and available. The availability shall be betterthan 99.9 % with a MTTR of 12 hours for all functions. The Probability of Failure onDemand (PFD) shall be strictly lower than 10

-2.

No error propagation:

The malfunction of a unit of the System, at any level, shall not propagate to otherapparatuses of other levels.

3.3.3 Modularity

The system shall be of a modular construction and easily expansible. The moduletypology holds in due consideration the requirements of interchangeability andreduction of storage costs.

3.3.4 Redundancy

High reliability is important if we take into account that the loss of critical processunits would result in major upsets and costly restart time. The DCS should haveability to continue operation, without upsets, even in case of one critical equipmentfailure.

Consequently, the System shall be configured in such a way that some equipmentcould be redundant.

Particularly, all the following parts/functions of the System shall be completelyredounded:

all CPUs

all communication buses

all communication modules

all power supply modules

all parts dedicated to continuous control including I/O cards


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all parts dedicated to interlock or sequential logic control

All boards or equipment shall be equipped with redounded supply systemconnected to separate supply systems.

The redundancy layouts shall be implemented in such a way that the transfer fromeach element to its back-up in redundancy and return to normal situation isimmediate, automatic and such as not to affect the process, the operator stations,the computation or other functions.

The transfer from a unit to the back up one shall be in any case alarmed.

The System is fitted with a redunded memory comparing automatic device, whichgenerates an alarm signal in the event that the result of comparison is negative. Inthe event of a discrepancy between the contents of the memories, it shall bepossible to eliminate such difference keeping the System running.

The System will be implemented in such a way that it is possible to replace the unitin redundancy of the main one without affecting the operation of the System itself.

3.3.5 Security

A DCS, by nature, is relatively easy to reconfigure. The system should providevarious levels of password and/or key protection to allow for different levels ofauthorisation when maintenance is being performed.

3.3.6 Memories

Memories of non-volatile type shall be provided for the configuration data. It shallnot be necessary to reload other "offline" devices in case of System restarting.

In the event that RAM are used with buffer batteries, these shall be suitable tomaintain the memories for 30 days.

The battery charge state shall be continuously monitored. A special alarm shall begenerated when the required maintenance times cannot be ensured.

All batteries shall be replaceable without needing to interrupt the functionality of

the associated memories.

The System is fitted with memory sufficient to carry out all the required control,protection and automation functions.

The System configuration shall be such as to leave at least 30% of memory spaceavailable for future changes.

It is preferred that all memory modules are expansible with no need of hardware orsoftware changes.


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3.3.7 Synchronisation

All System apparatuses at any level shall maintain an internal clock having aresolution of 1 millisecond. Such clock shall be resettable from the operator stationor from the configuration station. All system clocks shall be synchronised within 1millisecond one from the other.

Within the System there are more Master stations in such a way that themalfunction of an individual apparatus cannot affect the operation or thesynchronisation of the others.

Each Level 1 apparatus of the System shall be suitable to generate suchsynchronisation signal.

3.3.8 Data Base

All Input/Output signals to the System shall be identified with the same identifyingtag name, generally that one of the field instrument.

The System allows the input, output signals or internal variable to be identified witha name of 12 digits at least.

For each input, output or internal variable, this name will be unique and can beused in any level of the DCS and for any function (acquisition, control, supervision,configuration and programming, visualisation, logging, etc..)

3.3.9 Basic control.

DCS shall allow implementation of standard control functions (PID, ratio, cascades,etc.).

3.3.10 Extended control

The DCS should provide ways to implement user functions including modifyingstandard algorithms or defining new ones.

This functionality should be available by use of a high-level programming languagefrom an industry standard. The ability to include logic functions (e.g. interlocks)

may be necessary for implementing certain advanced control functions.

3.3.11 Multivariable control

A highly desirable feature of the DCS is that multivariable predictive control (MPC)can be performed directly rather than in process control computer interfaced.

This will allow high speed, high reliability and state-of-the-art advanced controlwithin the basic instrumentation system.

It also allows, for the operator interface, to be consistent with standard controlfunctions display for all advanced process control applications.


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Multivariable control should be able to run as fast as every 15 seconds, even if,typically, run once per minute is enough.

3.3.12 Loop processing

Some functions need to be processed rapidly, at least twice per second (4 to 10times per second desired). Others can be done much less frequently (once perminute to 4 times per minute typically for multivariable controls).

The DCS must provide a mechanism to distribute the processing load so that thiswide range of loop execution frequency can be accommodated.

The load distribution shall not affect any functionality.

3.3.13 Communications with third party systems

The DCS must offer possibility of interface with third party systems.

Three types of communication may be considered:

For major CCS systems such as safety systems (ESD and Fire and Gassystems, etc).

In this case, the preferred DCS interface shall be via the DCS's own internalcommunication system where the CCS subsystems appear as nodes on thesystem and have established and integrated software.

For external control systems such as machinery and package control systems,tank gauging systems, metering system, motorised valves management system,power management system, HVAC control system etc

In that case, standard serial link (RS 232, 485, etc..) redundant or not accordingto application with proven protocol (such as MODBUS) shall be used.

High level of communication can be also considered after review and approval.

For management and associated systems such as Management informationsystem, Asset management system, operator training system, advanced controlsystem etc..

In that case, DCS shall be able to carry on a dialog through appropriateinterface module and communications standard network (Ethernet orequivalent).

3.3.14 Installation of the system

The system will be installed in a non-classified area (control room, technical room)- ISA S71.04 & S71.01 G1AX

The System shall be suitable to operate in a room with the following ambientparameters:

Maximum: T = 40C Relative Humidity = 90%


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Minimum: T = 10 Relative Humidity = 20%

The system shall be suitable to be stored in a warehouse with the following limitambient parameters:

T from 0 to + 50C

Relative Humidity from 20% to 95%

DCS equipment shall be in accordance with IEC 6100 norms regarding EMCinterference.

Earth shake protection

Shock of 15G, 10 millisecond duration or steady state vibration of 2.5G, 5-500 Hzshall not result in any damage or malfunction.

3.3.15 System Electric Supply

The system shall be supplied at 220 V - 50 Hz from a UPS supply with thefollowing tolerances:

Voltage 220 V + 10%, 220 V - 10%

Frequencies 50 Hz + 3%, 50 Hz - 4%

The system is to supply all external loops except those identified as "externallysupplied".

All supply units shall be redundant and implemented in such a way as to preventthat the malfunction of a unit may extend to the other units as well.

The transfer of supply from the unit under failure to the back up one isinstantaneous and without interruptions in the normal operation of the System.

The outputs of all supply units shall be monitored by the System and anymalfunctions shall be immediately identified and alarmed.

In case of interruption then coming back of the power, the system shallautomatically start with no need of a manual data reloading from disks, tapes orelse.

The starting and reset of each System component shall not require theperformance of complex procedures.


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4 ACQUISITION AND CONTROL SYSTEM


4.1.1 Input /Output cards

4.1.1.1 General

The I/O cards shall be of a strong design, high quality and manufactured in such away as to be suitable for the installation in an industrial environment.

The System shall be implemented in such a way that all types of I/O cards may beinstalled in all positions of the relevant nest. It shall be implemented in such a waythat every I/O card may be removed or inserted under voltage. The System shall

be equipped with diagnostics suitable to prevent that the insertion and removal ofI/O cards may cause errors in signal scanning.

Each individual I/O channel shall be protected by fuses.

All fuses shall be equipped with optical indicator; furthermore the fuses may bereplaced with no need to remove the card, keeping in operation all channels notprotected by the fuse to be replaced.

The minimum insulation between I/O channels and between the channels and thecommon is 75 M.

4.1.1.2 Analogue Input Cards

The analogue input cards available are suitable for the following typologies ofsignals:

1 - 5 VDC

4 - 20 mA self supplied or externally supplied

thermocouples (I, K, T, E)

RTD 100 Pt

The analogue input cards 4-20mA shall be equipped with a device to check thefunctionality of the loop (open - short circuit detection).

The supply to field transmitters for the 4-20 mA loops shall be 24 VDC.

The thermocouple input cards shall be equipped with compensation of the coldjunction and with a device to detect any burnout.

The linearization of the signals from thermocouples or thermo-resistors shall bemade at card level or at software level.

The scan rate for analogue inputs, which are part of control loops, shall not be

more than 0.25 seconds.


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The scan rate for analogue inputs not involved in control loops, shall not be morethan 1.0 seconds.

The only exception to the above, can be the loop relevant to temperaturemeasurement for which a scan rate of 5.0 seconds can be accepted.

Each card shall be equipped with its own A/D conversion unit.

4.1.1.3 Analogue Output Cards

The analogue output cards shall comply with the following technical requirements:

they are suitable to control a load of 400 at least;

the output range is 4-20 mA

the resolution is 12 bits

the linearity is 0.1%

the action in the event of malfunction of the card or the logic shall be pre-selectable (high - low or unchanged)

The card circuitry shall be suitable to monitor the state of the loop connectedand in particular the conditions of open loop or short circuit ones.

Analogue output cards shall have an individual D/A converter for each analogueoutput.

The scan rate (output update) for analogue outputs, which are part of controlloops, shall not be more than 0.25 seconds.

4.1.1.4 Digital Input Cards

The digital or low frequency pulse inputs cards shall comply with the followingrequirements:

each entry shall be optically isolated (2500 V),

each loop shall be supplied from the system, which recognises loop statechanges with impedance of 1000 ohms at least (including the contactresistance),

the state of each digital input shall be visible on the card front through a specialLED.

the digital input channels shall be equipped with filter suitable to discard signalshaving duration of less than 2 millisec.

the pulse counters shall have a range from 0.1 to 100 Hz; the duration of pulsesmay vary starting from a minimum of 5 millisec.


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4.1.1.5 Digital Output Cards

Output cards shall normally be solid state able to drive field solenoid valves andrelays for electrical interface. Solid state outputs shall be 24 VDC and be capableproviding at least 300 mA to the external coil. No interposing relays shall be usedwith exception of electrical interface. In this case the interposing relays could beinstalled in a dedicated cabinet located in the electrical sub-station.

In case of relays mounted on digital output cards included in the DCS supply, thesame shall comply with the following technical requirements:

they are capable of switching 2 A under 220 V 50 Hz

they bear a continuous peak load of 10 A

it is possible to select the state of each "normally open". or "normally close"

output

the relays used on the cards are suitable to bear 1.000.000 operations at theprovided load.

the relays shall be exempt from vibrations.

4.1.1.6 Remote I/O

The DCS shall be able to drive remote control systems, which include dedicatedDCS processors and I/O cards and/or remote I/O in order to implement theElectrical/Instrument Interface in electrical substation (if any) or when the distancebetween field instrumentation and Control Building becomes too long (e.g. jetty).

The remote communication shall be via redundant fibre optic devices. Allnecessary equipment, FO converters and the accessories relevant to the fibreoptic system will be part of the DCS supply.

4.1.1.7 Fieldbus system

Field bus system will not be used for this project

4.1.1.8 Scanning

It shall be possible to assign, by configuration, various scanning times to I/Osignals. The selection of the scanning time is carried out by taking in dueconsideration the speed with which each signal changes from its normal operatingstate to the abnormal one.

The scanning time of some I/O signals may be automatically modified by program.This will allow that points with normally slow dynamics could be sampled at greaterfrequencies during some particular transients (starting).

4.1.1.9 Checking of loop integrity

The system constantly shall check all the analogue I/O to verify that they are within

the fixed ranges and activate an alarm signal in case of malfunction. The displayed


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data relevant to the points in malfunction state shall be the last valid onemeasured; in this event the status "freeze value" shall be clearly indicated.

As a rule the malfunction of an analogue input signal of a control loop shall causethe controller to be switched to the manual mode and an alarm to be generated inorder to call the attention of the operator.

4.1.2 Controllers

Controllers shall be multiloops microprocessors based modules.

Power supply modules such as interface modules with internal communicationsystem shall be systematically redundant.

Control processor unit (CPU) shall be redundant if regulatory functions areperformed by the relevant controller.

No processor shall be loaded at more than 70% of its processing capacity.

Field I/Os shall be grouped and assigned to CPUs using the following guidelines:

Communication between CPUs across the DCS communication network (peerto peer communication) shall be minimised.

CPU I/O assignment should be designed according to process areasegregation. This means that generally each process area cannot be controlledby different CPUs.

4.1.3 Installation

All equipment and modules related to acquisition and control system shall becompletely installed and wired inside system cabinets.

These cabinets shall be self-standing and designed for 19 rack mounting,standard Rittal type or equivalent. Nevertheless the following requirements mustbe taken into account:

Cabinets shall have front and rear access.

Cables entry shall be from bottom

Preferred dimensions (WxHxD) : 800 x 2100 x 800 mm

Field Terminal Assemblies (FTA) shall be separated from I/O cards.

They shall be installed inside marshalling cabinets in which intrinsic safety barriersand marshalling related to field multicore cables shall be also mounted.

Cross connections between marshalling and terminal units shall be part of vendorsupply.

Marshalling cabinets shall have the following characteristics:


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Front and rear access or front access only.

Cables entry shall be from bottom

Preferred dimensions (WxHxD) : 800 x 2100 x 800 mm or 1600 x 2100 x 400mm for marshalling with front access only.

Standard cables with end connectors shall be used to connect FTA and theircorresponding I/O cards.

System and marshalling cabinets shall be installed in the technical room within theControl Building. Nevertheless depending to the proposed architecture someremote control modules could also be installed within the following buildings:

Jetty control room

Compressor building

Main electrical substation

Loading control building

Sea water systems building


4.2.1 Regulatory control functions

The control functions of the System shall be carried out by a microprocessor

multiloops controller.

The controller shall be capable of accepting signals from the various sensorsinstalled on the process through the I/O cards mentioned in paragraph 4.1.1

The following typologies of regulation shall be available:

PID Controller

The controller shall have the proportional band algorithms available as well asintegral and derived action in order to implement the control strategies.

The controller shall be capable of operating in the following modes: manual,automatic, cascade, backup cascade.

The control algorithm shall be implemented in such a way that the transfer frommanual to automatic is "bumpless".

The System shall contain the possibility of automatic tracking of the controller inputor output as required by the controller mode.

It shall be possible to configure alarms on the deviation between the measuredvariable and the set point of the controllers.

Other control functions


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The controller shall have all the algorithms available which are suitable to allow theimplementation of control strategies such as: PID, adaptive gain, feed forward,

signal selection, etc. in addition to the base algorithms.

The System shall include a wide library of continuous control algorithms, includingstandard algorithms and of specialised functions.

Special functions such as mass-flow, function generation, logarithmic functions,etc. shall be included in the program library.

The continuous control algorithms are of type such that the operating mode, theset points and the tuning parameters can be modified from the operator station orby the logic control functions.

4.2.2 Data acquisition function

The System shall allow the transfer of data from the input card to the higher levels.

The scanning times of the variables simply acquired shall be compatible with thesupervisory system response times.

4.2.3 Logic control function

The System shall perform as combinatory and sequential logic functions.

The sequential control shall be able to use all the analogue/digital signals and

internal variables resident in the database.

Logic control functions can be implemented by means of the application ofstandard or pre-configured control algorithm

The following logic algorithms shall be available:

Valve module

Motor module

Etc.

It shall be possible to perform combined logic and continuous functions such as:

Forcing loop in manual mode

Changing set-point (with possibility of ramp)

Changing tuning parameters

Forcing the output signal.

The logic or sequential programs are to be equipped with comments of such aquality as to allow a quick interpretation.


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4.2.4 Response times

4.2.4.1 Continuous control function

The response time is defined as the time between the moment when a signalchanges in value at the input channel of a card and the moment when thecontroller takes the consequent action and the output signal is sent assuming thatthe following conditions occur:

Worse position from the varying point inside the scanning cycle

Maximum complication of the control algorithm

Maximum traffic on the communication systems between levels.

Under the previous conditions, the system responds within the times specifiedbelow:

Slow loops 0.50 s

Fast loops 0.25 s

Critical loops 0.10 s

In any case, the basic processing cycle shall be adjustable.

4.2.4.2 Logic or sequential control functions performance times

Logic control (motors, interlocks) 0.5 s

Sequence 0.5 s

5 SUPERVISORY SYSTEM

5.1 SYSTEM ORGANISATION

Control Room Operators will be organised on 12-hour shift basis, each shift willinclude two teams dedicated to both process and utilities, and the other to powergeneration and distribution. The power generation and distribution team will controland monitor the power generation and distribution from dedicated electrical controlroom by means of PMS duly interfaced with DCS installed in the Control Room.

At least the following equipment shall be provided for the Process and Integrated

Utilities Control Room Operators:

4 nos. Independent Process operator Consoles (including large screendisplays), ergonomically arranged to provide the operators with facilities toefficiently and safely operate the LNG Terminal.

Provision shall be made to install the instrumentation package unit operator(such as CCTV, and Tank level Systems), the PA/GA system console, the radioconsole and telephones.


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2 nos. Empty tier consoles and accessories for ESD panel and F&G panel(FACP) mosaic type.

2 nos. Alarm and Event Matrix Printers and accessories assigned, respectively,to the process area and to the utilities area.

2 nos. Logging and reports Matrix Printers and accessories assigned,respectively, to the process area and to the utilities area.

1 nos. Video-copy colour Printer and accessories assignable from any controlrooms operator consoles, engineering console and training & Managementconsoles.

At least the following equipment shall be provided for the DCS system Engineers:

1 nos. Engineering Workstation.

1 nos. Matrix Printer and accessories.

1 nos. Laser Jet Printer and accessories.

1 nos. Table support for all above equipment.

At least the following equipment shall be provided forThe training Engineers:




At least the following equipment shall be provided for The ManagementEngineers:





5.2.1 Process Operator consoles

Each operator console shall consist as minimum of:

1 nos. Workstation electronics with 21" min flat LCD screen and keyboard

Empty desk for all above equipment's

Videos shall be equipped with colour screens, 21", high resolution, capable ofshowing either alphanumeric pages or graphic pages.

Various colours shall be used in order to distinguish the information supplied.


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All information visible on a video of one console shall be visible on the other videoof the same console. The videos of an operator console shall be interchangeable.

Any change in the database from a video station shall be automatically updated onthe video of the same console and on all other consoles.

Keyboard

The keyboard shall be of the "self explanatory type", easy to operate, and will allowan easy performance of the system control functions.

Easy-to-learn "Call routines" shall help the operator in his task.

A software of interactive type shall be used for all operations.

The operator keyboard shall preferably be of the "touch sensitive" membrane typeand shall be tight to dust and humidity.

All commands from the keyboard shall be recognisable by means of a sound.

At least, through the keyboard, it shall be possible to :

Select all displays including the direct access to the loops in alarm, select thevideo pages (overview, group, loop), etc.

Acknowledge alarms

Insert new parameters or cancelling existing wrong parameters. This type of

access shall have to be documented

Easily position the cursor for the selection of all parameters

Request the photocopy of the video, prints of logging and alarms, addresssignals and trend recorders

Change the operating mode (automatic/manual/cascade) of each controller

Furthermore, the keyboard shall have the possibility of assigning some functions topersonnel of a higher level.

These functions have to be protected by means of "security keys" or by

passwords.

At least, it shall be possible to:

Inhibit alarms (installation stopped or under maintenance)

Change the alarm set

Access to the loop tuning parameters

Adjust the clock

Assign parameters for the historical recordings.


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The system shall be suitable to be use also with additional pointer devices (mouse,track ball or equivalent).

For some console, an engineer keyboard should be also connected to the video.This will allow to perform more complex actions.

Electronics

The workstation electronics shall consist of a microprocessor based system thatsupports the keyboard and the VDU drives printers, transmits data and receivesdata from the I/O devices via the data DCS Network.

All links to the keyboards, VDUs and trackballs or mouses shall be foreseen.

Desk Furniture

The basic empty desk furniture to be supplied with the Workstations shall becomplied with the operator design requirements:

Desk wedge units for arc-shape arrangement,

Flat to desk units to provide space for documents

Chairs.

All components installed within the desk shall be flush mounted.

5.2.2 Logging printer

Two printers dedicated to the reports shall be provided.

Reports shall be printed, according to the configuration:

Per hour

Per shift

Per day

Upon operator request.

The information relating to each report are kept till a maximum time of 15 minutesafter the predetermined print-out time.

5.2.3 Alarm and event printer

These two printers shall be dedicated to:

Print the process and system alarms as soon as they appear or of the alarmhistoric situation request by the operators;

Each print out shall show, at least, the data relating to: Tag name, service, dayand hour of the alarm, type of silencing, hour when normal situation resumed


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Print the events (understood as actions taken by the operator through thekeyboard).

5.2.4 Colour printer

A colour printer unit shall be used to obtain copies of the video display (on requestthrough the operator or engineer console).

The video photocopied display shall be halted during 5 seconds maximum.

The printer shall be addressable from any of the operator stations.

5.2.5 Configuration station

The configuration station (or Engineering Workstation) shall perform the following:

All apparatuses at any level of the system may be configured or reconfigured on-line from the configuration station through the communication bus, without causinginterferences or interruptions to the normal running operations.

The loading of the programs developed off-line may take place in a partial orscattered way without trouble for the normal operation.

The system configuration shall be based on high level language. The configurationthrough blocks is required.

The system shall be suitable to carry out programs written in high level languagessuch as FORTRAN, C, BASIC. Furthermore some utilities software shall beavailable to prepare pre-configured control blocks with such types of languages.

The system shall contain routines suitable to verify that the changes and/oradditions are correct and not in contradiction with the existing configuration.

The configuration station shall be equipped with password system to avoid thatunauthorised personnel may tamper with the software.

The configuration station shall store both the date and time of the intervention andthe originator of the change.


5.3.1 General

Supervision system shall work as a minimum with Microsoft Windows NT operatingsystem. It shall include interfacing capabilities using DDE and OPC protocols.


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5.3.2 Process display

5.3.2.1 Overview

The overview display shall allow the overall vision of the various groups of loops orvariables or alarms forming the process unit.

It shall be possible to have on the overview an indication of the deviations from thenormal operating values of all analogue variables.

Any conditions of deviation from the set-point shall be shown by means ofvariations in colour.

The condition of operation of each loop (auto/man/cascade) shall be clearly

signalled.

5.3.2.2 Group display

The group display shall indicate individually the groups of loops shown in theoverview display.

Each loop of the group display shall be indicated, at least, by the tag name,description of the service and unit of measure.

The group display shall at least make visible the following detail information:

Value of the analogue variable both in the form of a "bargraph" and inengineering units.

Value of the set point, both in the form of a "bargraph" and in engineering units.

Value of the analogue output both in the form of a "bargraph" and in percentageby means of alphanumeric display;

Mode of operation of the controller (auto/manual/cascade, etc.)

Alarms of the measured variable, deviation alarms, etc.

Indication of the selected loop (inside the group;

Position of the valve in case of failure

It shall be possible to insert the same loop on various group without restriction.

5.3.2.3 Loop display

The loop displays shall be able to supply detail information on all loops configuredin the system.

The graphic representation shall be similar to that of the group display, but thefollowing additional information shall be supplied:

Values of the tuning constants


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Values of bottom and full scale of the variables

Set points of the alarms on the various parameters

Limits on set point, output, etc

Control action (direct or reverse);

Position of failure of the final control element

Values of computation (reports, bias, etc.)

Value of output

Engineering units employed


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It shall be possible to modify the following parameters through key from thekeyboard:

Tuning constants

Zero and range

Limits

Alarm set points

Control mode

Output

For the digital points, it shall be possible to execute start/stop or closing/opening

commandsThe control of further parameters shall be restricted, by means of key onpassword, to the only authorised people.

At the level of loop display, it shall be possible to configure trend curves withmaximum sampling interval of 1 second and basic time of 60 sec, at least, to beused for tuning the control loops.

5.3.2.4 Graphic displays

It will be possible to obtain dynamic displays of graphics relating to the various

units of the installation on the screens of the operator consoles.

The graphics shall be configurable (only through the engineer console) by applyingstandard symbols or symbols defined by the user.

The graphics shall be of the interactive type and a complete control of the processshall be possible through these displays.

The commands of valve opening/closing and motor start/stop shall also bepossible and the state change shall be shown by colour modification.

Information regarding process measurements and alarms shall be visible and it

shall be possible to read and modify indications, set points and operating modeetc..

Symbols and colours shall meet the EN60073 requirements.

5.3.2.5 Recording display

The system shall be capable of providing the following displays with recording:

Trend recording

Historical recording.


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The historical data shall be stored on non-volatile memory equipment (for instance:hard disk).

The recording, either trend or historical, shall be possible for each variable orparameter such as input, output, set point, etc.

It will be possible to sample and store instantaneous data or data of variablesgenerated at the predefined intervals; for example: 2, 15, 60, 600 s.

As minimum, real time trends shall be stored in the system for 2 hours with asampling time of 2 s.

At least 1000 of the most recent events shall be saved on the hard disk and thenarchived for long-term storage.

Furthermore, both "scrolling" and basic time expansion shall be possible.

The selection of the loops to be recorded and of the sampling times shall bepossible from the operator keyboard.

The system shall be able to reproduce "multi-trend" displays( several differentcurves on the same axes) and allow a direct comparison of different variables orparameters.

The recording display shall be either of "bargraph" type or of single line type.

5.3.2.6 Monitor and alarm display

When an alarm occur, it shall be instantaneously visible via a display, which shalloverlay whatever display is present on the screen.

It will appear also on the dedicated display (alarm summary display).

The alarm is also shown at overview display level by means of a change in colourof the involved group.

It shall be possible to have access to the variable under alarm (at loop level) withtwo commands maximum from operator keyboard.

The alarm sequence (apparition, silence, acknowledgement, disappearance) shallbe in accordance with ISA 18.1 A

If provided by the configuration, a video alarm and an audio signal shall begenerated simultaneously. Such signal shall be silenced only in the event of thealarm being recognised by the operator.

It shall be possible to set the value of the alarm limits for the process variablesfrom the engineer keyboard

Types of configured alarms shall be:


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Absolute value of the input variable,

Speed of variation of the input variable

Deviation from the set point.

An alarm summary display is available. The alarms shall be listed in chronologicalorder.

The alarm situation shall be cancelled from the display only if the cause hasceased and the alarm has been recognised by the operator.

The alarm shall display lists, at least, the following information for each alarm:

Time and date of the alarm

Tag name

Description of service

Type of alarm (absolute or deviation)

The system shall be capable of listing on the alarm summary display a minimum of100 alarms.

The system will ensure the historical management of the alarms. In particular thehistory of the alarm conditions is kept in the database of the alarm display andprinted on the basis of the times defined at configuration level.

The alarm display and the print shall include, at least, the following information:

Date of the event with the time in seconds

Tag Name

Description of the service

Type of alarm (absolute or deviation)

Time when the alarm has been acknowledged

Time when the cause has disappeared

The system shall be capable of handling historically 300 alarms at least. It shall be possible to assign 7 alarm priority levels.

The system shall be capable of carrying out self-diagnostic functions (refer toparagraph 5.3.4).

For each abnormal condition in each subsystem or other equipment a "systemalarm" shall be generated with a message to the operator.


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5.3.2.7 Sequence display

The system shall be capable of displaying, through the sequence display, theprogress state of sequential operations. In particular, the display shall showinformation regarding:

Sequence identification number

Sequence descriptive identification

Operating phase in which the sequence finds itself

Any messages to the operator.

Any alarm or operating malfunction situations of the sequence shall be signalled tothe operator by altering the colour of the information on display.

5.3.3 Logging functions

It shall be possible to obtain the logging of variables measured and/or calculated,actions by the operator, alarms, trends, etc. from the operator console.

The logging functions may be carried out on predefined time basis or on operatorrequest (refer to paragraph 5.2.2).

It shall be possible to have at least 20 logs.

All parameters required for logging are stored in the memory with the database

updating time.

High-level software languages are available and sufficient free spaces shall beprovided in the memories.

5.3.4 Self diagnostics

The system shall have an extended set of self-diagnostic routines allowing theidentification of malfunctions at module level at least, through detailed display andprints.

The self-diagnostic messages relating to the malfunction of each system

component shall appear on the screens of the operator console, independentlyfrom the display selected at that moment.

At local level the malfunction of a system component is identifiable by LED or by alamp on the cabinet.

Display of the system structure with identification of the system component underfailure and the type of malfunction shall be available in order to help themaintenance.


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5.3.5 Response Time

At Level 2, the response time is defined as the time elapsing between the changeof value or state of an input of an I/O card at Level. 1 and the moment when thesame information is available to the operator at Level 2 at the screen or printer.The response time is calculated in the worst possible conditions, which are:

Unfavourable position of the input and card with respect to scanning

Maximum complication of the control loop

Maximum traffic on the bus between levels;

Times of the display, the video buffers, etc.

Considering what above, the response times shall be 2seconds maximum.

The display changing time further to operator request shall be less than 2 seconds.

6 COMMUNICATION SYSTEM

6.1 INTERNAL DCS COMMUNICATION BUS

6.1.1 General specifications

The communication system shall be based on an open architecture using TCP/IPprotocol or equivalent in a client/server environment.

The communication medium shall be of standard manufacturers (Ethernet orequivalent).

Proprietary communication systems are also acceptable; but they shall besubmitted to review and approval.

The communication system shall be of the dual/redundant type, consisting of twobuses and two systems of interface for each connected equipment.

The speed of communication on the bus shall be enough to ensure the data baseupdate. The performances of the system shall not be degraded by load

fluctuations from 10% to 100%.

In case of failure of the main bus or any other equipment, the transfer on the back-up bus or unit shall occur automatically, without interruption of the operations andwithout requiring interventions of the operator.

The system shall count the data rejected by the processors dedicated to thetransmission bus. An alarm shall be generated when the counter exceeds a pre-defined value.

Peer to peer links between the various controllers of the acquisition and controlsystem shall be possible. They shall use the communication bus.


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6.1.2 Communication Times

The response time of the communication bus is defined as the time needed for adatum in the memory of an apparatus of one level to be transferred in the memoryof another apparatus of the same or a different level; what above in the worstpossible circumstances.

The transmission time thus defined shall be such as to satisfy the requisitesindicated in the paragraph 5.3.5.

6.1.3 Hardware specification

The DCS data highways cables shall be Fibre Optic Cable (FOC) running in ductswhen connections between buildings are necessary.

When data highways runs in the same building, standard type of cable could beused.

Data highways shall be dual redundant and routed by secure, separate anddiverse routes.

The manufacturer shall specify the characteristics of the optic fibres or the cablesconstituting the communication bus.

When specific modules are required (example: optic converters), they shall be partof the DCS vendor scope of supply.

6.2 COMMUNICATION WITH THIRD PARTY SYSTEMS

6.2.1 Communication with CCS main subsystems

For Major CCS subsystems such as safety systems (ESD and Fire and Gassystems, etc.), the preferred DCS interface shall be via the DCS's own internalcommunication system where the CCS subsystems appear as nodes on thesystem and have established and integrated software.

The next option is to use established and proven data links between thesubsystem and the DCS. The priority is a secure link, using standard software and

maximum functionality. The interface shall be invisible to the operator.

6.2.2 Communication with other control system

The standard serial link (RS 232, 485, etc..) redundant or not according toapplication with proven protocol (such as MODBUS) will be used for the followingexternal control systems:

Tank gauging systems,

Power Management System (PMS),

SCADA MTU,


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BOG compressors,

Meterings,

SCV,

Unloading arms,

Berthing system (HOLD),

Truck loading,

High level of communication can be also considered after review and approval.

6.2.3 Communication with management and associated systems

For Management and associated systems such as Management InformationSystem, Asset Management System, Operator Training System, Advanced ControlSystem, etc. DCS shall be able to carry on a dialog through appropriate interfacemodule and communications standard network (Ethernet or equivalent).

7 ASSOCIATED SYSTEMS REQUIREMENT

The minimum requirements for the design and implementation of the ManagementInformation System (MIS) and the Operator Training System (OTS) shall be asfollow.

7.1.1 Facilities Management SystemThe Facilities Management System (FMS) will extract data from relevant PCSsystems and automatically present to management reports on performance,material balances over the office network.

7.1.2 Operator Training System

An Operator Training System (OTS) will be required for the training of Operatorsfor the LNG Terminal project.

The OTS will be a tool to aid in the training of operators for the LNG Terminal.

The operation staff shall be trained prior to and following the start-up of theFacility, in particular in:

Procedures for plant cold start-up, shutdown and emergency situations

Handling of plant trips, cutbacks and other upsets

Fault diagnosis and correctives actions in case of equipment malfunctions

Normal operation.

The OTS shall simulate the dynamic operation of the Terminal facilities on an areaby area basis.


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8 DOCUMENTATION

The documentation is an integral part of the provision. It includes:

Hardware documentation

Software documentation

Instruction manuals

NOTE: all drawings shall be produced using CAD tools, AUTOCAD orINTERGRAPH MICROSTATION compatible.

8.1 HARDWARE DOCUMENTATION

8.1.1 Listing of power consumption

A detailed list with all of the System power users and corresponding thermal loads.

The list shall include at least the following:

Type of electric load

Load characteristic

Type of internal distribution

Type and manufacturer of protective devices

Protection device data

Grounding requirements

8.1.2 Feeding System

A drawing detailing the whole electrical network from the distribution board up tothe users (included those supplied by others, if integral part of the system).

8.1.3 Cables List

A detailed list of system cables included in the supply, with the following

information:

Cable item

Cable type (identification code) and length

Starting and terminal points.

8.1.4 Dimensional Drawings

Dimensional drawings of every DCS devices shall be included.


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8.1.5 Cabinet Layouts

Drawings showing the positions of all the devices inside the cabinets and consoles(plan and front views) shall be included.

8.1.6 Rack Layout - Tag Assignment

Documentation showing:

System modules layout inside the cabinets

Tag assignment in the I/O cards

shall be provided.

8.1.7 Marshalling cabinets drawings

Marshalling wiring drawings shall be produced.

Particularly, drawings showing cross wring details between the field terminalassemblies and the field cables marshalling shall be provided.

8.1.8 Ground System

Drawings showing how and where the System has to be connected to the GroundSystem. In particular, ground conductors sections and connection points will beindicated.

8.2 SOFTWARE DOCUMENTATION

These following documents shall be in accordance with Std. ISA S5 instructions.

8.2.1 Data Base

All necessary information regarding Input, Output and other variables will beprepared and provided to vendor for configuration.

Vendor is requested to draw attention on data, which would not be specified. In

this case, either the detailed missing information will be provided or general rulesto be applied will be defined in relationship with the vendor.

8.2.2 Functional Specification

All necessary information for control functions definition will be provided to thevendor for configuration and programming. These documents could be of variousforms (lists, ISA loop drawings, logic diagrams, causes and effects diagrams,narratives, etc.).


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Vendor is requested to draw attention on data, which would not be specified. Inthis case, either the detailed missing information will be provided or general rules

to be applied will be defined in relationship with the vendor.

8.2.3 Human-machine interface

All necessary information for human-machine interface definition and particularlygraphic displays will be provided to vendor for configuration and programming. Thedocuments issued will be mainly:

General specification describing general rules for Human-machine interface

Simplified sketches for background pictures (when authorised by projectmanagement, partial and commented copies of P&ID's shall be furnished only)

8.3 INSTRUCTION MANUALS

The provision includes the following manuals:

8.3.1 Operator Manuals

The scope of these manuals is to give to the operators a guide to use the System.

The Operator Manual must have a "Quick Reference" Section, suitable for aprompt consultation.

These manuals shall be in English language.

8.3.2 Installation and Maintenance Manuals

They have to cover both system hardware and software. They have to give thenecessary instructions for trouble-shooting, software loading and management.

9 DCS ACCEPTANCE TESTS

System shall be tested in three separate steps:

Manufacturer internal test (IFAT)

Owner witnessed hardware and software test at DCS manufacturer premises orFactory Acceptance tests (FAT)

Site acceptance test.(SAT)

9.1 MANUFACTURER INTERNAL TEST (IFAT)

This test shall be carried out on the basis of manufacturer internal procedures. Themanufacturer shall issue a test certificate, at the end of this step. The vendor willattest, by this certificate, that the system is ready for starting the factoryacceptance test.


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9.2 FACTORY ACCEPTANCE TESTS (FAT)

This test shall start at the end of the IFAT. This FAT will be witnessed by Customerand Engineering representatives.

9.2.1 Documentation

The following documents, at least, shall be ready and used as referencedocuments:

Hardware test procedure (previously agreed)

System architecture

Hardware System drawings

Cabinet layouts

I/0 assignments

Data base

Functional specification

Human-machine interface documentation

9.2.2 System preparation prior to tests

Prior the starting of the test activities, the system shall be installed in an area of

adequate dimensions. It shall have all elements connected together and, ifnecessary, to test benches foreseen for that purpose. It has to be powered on.

9.2.3 Hardware tests

The test shall include the connection to the system bus of all the systemequipment's, including fibre optic converter and fibre optic cables. in order to havecomplete hardware system configuration.

During the test following checking shall be done:

General quantity and quality check for conformity with the specifications

Check of correct installation of equipments and components

Check of correct installation of processor racks

Check of correct installation of I/0 racks

Check of correct installation of I/0 modules, field termination panels and barriers

Check of correct equipment and components tagging and identification

Check of correct installation and of conformity of auxiliary components (pushbuttons, lamps, selectors, etc.) to the specifications.


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Check of correct configuration and sub-routine application of the custom graphicdisplays.

9.2.5 Integrated Test

The test is relevant to all those equipment that are not part of the DCS but areinterfaced to the system in order to allow the centralised operability from the DCSoperator station.

Scope of this test is to demonstrate the correct functionality of the communication.

Adequate modules of third party systems shall be delivered to the FAT area andcomplete connection of intercommunication modules shall be realised.

The following shall be tested:

Correct functioning of the link

Correct functioning of the protocol.

Correct configuration and programming of data base table on each side

The test shall be performed in accordance with an agreed test procedure and shallbe carried out in parallel with the DCS software test (parallel test is mandatory asthe DCS need to be physically connected to the external equipment todemonstrate the full hardware and software functionality).

9.3 SITE ACCEPTANCE TEST(SAT)

9.3.1 System power up

After the installation of the system on the field, the system will be powered onunder control of vendor representative. Good functioning of equipment shall be,again, tested by repeating tests done during FAT.

During the Site acceptance test, particular care shall be taken to check the powersupply system and the grounding network

9.3.2 Loop tests

A dynamic complete test of all the loops shall be performed. This test will allow thechecking, from the local sensors up to the operator console, of the goodfunctioning of:

Sensor

Wiring up to Input card

Corresponding data base

Control function (including alarms, associated calculations, etc.)

Display on adequate views (group, graphic, alarm, etc.)


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