Sabp Z 002e PDF

EDSD REV
REVISION CERTIFICATE VERIFICATION NO. DATE JO/EWO DESCRIPTION ENGG CERT PMT OPRNS 1]
DATE:
DATE:
DATE:
DATE:
DATE:
THIS INDICATES THAT REV. NO.__________
OF THIS DRAWING IS COVERED, FOR ALL
CONTROL NUMBER
APPROVAL/CERTIFICATION REQUIREMENTS,
AGENCY
BY:
PROJECT
BY DRAWING COMPLETION CERTIFICATE
ENGINEER
ENGINEER
DISCIPLINE
CERTIFIED
OPERATIONS
CONSTRUCTION
(DCC) NO. _____________________ DATE:
SABP-Z-002E [Issue Date: 14 October 2014, Revision #
PROJECT NAME
PROJECT SPECIFICATION FOR
COMPRESSOR CONTROL SYSTEM (CCS)
SAUDI ARABIA
DOC
FOR
(CCS)
[BI-10-XXXXX]
GEN
[PROJECT NAME]
JO / EWO:
Copyright© Saudi Aramco 2014. All rights reserved.

J
SAUDI ARABIAN OIL COMPANY
DWG.TYPE PLANT NO. INDEX

FUNCTIONAL SPECIFICATION
BI-10-XXXXX
COMPRESSOR CONTROL SYSTEM
DRAWING NO.
PP-XXXX
1
38
OF
SHT.NO.
A
REV.NO.
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
1]
PMT OPRNS
ENGG CERT
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................... 4

1.1 PURPOSE ........................................................................................ 4
1.2 FACILITIES DESCRIPTION .............................................................. 4
1.3 ACRONYMS & DEFINITIONS ........................................................... 4
DESCRIPTION
1.4 REFERENCE DOCUMENTS ............................................................ 5

1.5 CONFLICTS AND DEVIATIONS ....................................................... 5
2.0 SCOPE ............................................................................................. 6
2.1 GENERAL ......................................................................................... 6
2.2 VENDOR RESPONSIBILITY ............................................................. 6
3.0 FUNCTIONAL SPECIFICATION....................................................... 8
JO/EWO
3.1 GENERAL REQUIREMENTS ............................................................ 8

3.2 SYSTEM SUPPORT ......................................................................... 8
DATE
3.3 DESIGN VERIFICATION ................................................................... 9

3.4 SEGREGATION ................................................................................ 9
NO.
REV
DISCIPLINE 3.5 REDUNDANCY ................................................................................. 9

ENGINEER
3.6 FAULT TOLERANT AND FAIL-OVER CAPABILITY ........................ 10
DATE: 3.7 COMMUNICATIONS AND INTERFACE .......................................... 10
PROJECT
ENGINEER
3.8 CCS ENGINEERING WORKSTATION (EWS)................................. 12
DATE:
3.9 DISPLAYS ...................................................................................... 15
CERTIFIED 3.10 USER ACCOUNTS AND SECURITY .............................................. 15
3.11 DIAGNOSTICS ............................................................................... 16
DATE:
CONSTRUCTION 3.12 RECYCLE VALVES......................................................................... 16
AGENCY
4.0 CONTROL REQUIREMENTS ......................................................... 17

DATE:
OPERATIONS
4.1 COMPRESSOR PERFORMANCE CONTROL ................................ 17
4.2 ANTI-SURGE CONTROL ................................................................ 18
DATE:
4.3 LOAD SHARING CONTROL ........................................................... 21
CONTROL NUMBER
VERIFICATION
4.4 HIGH SPEED DATA AND TRIP EVENT CAPTURING SYSTEM ..... 22
EDSD
5.0 COMPRESSOR OPERATING PHILOSOPHY ................................ 23

DATE:
BY:
5.1 GENERAL ....................................................................................... 23

REVISION CERTIFICATE
5.2 START-UP ...................................................................................... 23

5.3 SHUTDOWN ................................................................................... 24

(DCC) NO. _____________________
PROJECT SPECIFICATION FOR DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
COMPRESSOR CONTROL SYSTEM (CCS) DOC 2

GEN J PP-XXXX
PROJECT NAME OF A
SAUDI ARABIA JO / EWO: BI-10-XXXXX 38
1]
PMT OPRNS
6.0 CABINET REQUIREMENTS........................................................... 25

ENGG CERT
6.1 GENERAL ....................................................................................... 25

6.2 MARSHALLING CABINETS ............................................................ 25
6.3 INTER-CABINET WIRING ............................................................... 25
6.4 POWER & HEAT CALCULATION.................................................... 26
6.5 POWER SUPPLIES ........................................................................ 26
6.6 CABINET PROTECTION EQUIPMENT ........................................... 26
6.7 LOCAL CONTROL PANELS ........................................................... 27
DESCRIPTION
6.8 GROUNDING .................................................................................. 27

7.0 STAGING, INSPECTION AND TESTING ....................................... 28
7.1 GENERAL ....................................................................................... 28
7.2 FACTORY ACCEPTANCE TESTING .............................................. 28
8.0 DOCUMENTATION ........................................................................ 29
9.0 SPARE PARTS AND CONSUMABLES ......................................... 30
JO/EWO
10.0 VENDOR SERVICES ................................................................... 31

DATE
10.1 GENERAL ....................................................................................... 31

10.2 STARTUP ASSISTANCE AND PERFORMANCE TESTING............ 31
NO.
REV
DISCIPLINE
ENGINEER APPENDIX A: ACRONYMS AND DEFINITIONS .................................... 33
DATE: APPENDIX B: APPLICABLE DOCUMENTS ........................................... 37
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

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1]
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ENGG CERT
1.0 INTRODUCTION
1.1 PURPOSE
The purpose of this specification is to define the minimum functional and
technical requirements for the Compressor Control System(s) (CCS) required for
[…] <INSERT PROJECT TITLE>.
This document together with the project specification for Scope of Work and the
DESCRIPTION
referenced Saudi Aramco standards, material specifications and project

specifications shall be used to define the specific requirements of the CCS
required for […] <INSERT PROJECT TITLE>.
1.2 FACILITIES DESCRIPTION

The Facilities description, process description, plant overview, plant operating
philosophy and risk area definition shall be as specified in the project
specification for Scope of Work and the project specification for Process Control
Systems.
JO/EWO
1.3 ACRONYMS & DEFINITIONS

DATE
When used in this or referenced documents the following words are used in the
manner described below:
NO.
REV
DISCIPLINE  ‘SHALL’ and ‘MUST’ are used in the imperative sense.


ENGINEER
‘WILL’ is used in the preferred sense.
DATE:  ‘MAY’ is used in a permissive sense to state authority or permission to do
PROJECT
ENGINEER the act prescribed or provide the function being defined in the prescribed
manner, and the words ‘no person may….’ Or ‘a person may not….’ mean
DATE: that no person is required, authorized, permitted to do the act prescribed,
CERTIFIED
and the words ‘a… may not ….’ mean that the item being described is not
DATE:
required, authorized, or permitted in the prescribed manner.
CONSTRUCTION  ‘INCLUDE(S)’ means ‘includes but not limited to’.
AGENCY
 ‘COMPANY’ means a SAUDI ARAMCO organization (ARAMCO Services
DATE: COMPANY, ARAMCO Overseas COMPANY, SAUDI ARAMCO)
OPERATIONS
 ‘CONTRACTOR’ means LSTK contractor or EPC contractor depending on
the procurement method selected for the project. There may be more
DATE: than one CONTRACTOR involved in the project. In this case, the term
CONTROL NUMBER
CONTRACTOR refers to all applicable contractors.

VERIFICATION
 ‘CCS VENDOR’ means the company providing the system to which this
EDSD
specification is applicable.
DATE:
 ‘PCS VENDOR’ means the company with the overall responsibility for the
BY:
PCS order
See Appendix A of this document for acronyms and definition of terms used in
(DCC) NO. _____________________
this document.

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1]
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1.4 REFERENCE DOCUMENTS

ENGG CERT
Project Specifications:
Project specification for Scope of Work: [document #]
Project specification for Process Control System (PCS) […]
Project specification for PCS Vendor Services: […]
Project specification for System Design Document (SDD): […]
Reference Documents:
DESCRIPTION
See Appendix B of this document for a list of applicable reference documents.
1.5 CONFLICTS AND DEVIATIONS

If any inconsistency or conflict exists between this specification, and other
project or Saudi Aramco documents, industry standards or drawings, the
inconsistency shall be brought to the attention of COMPANY /
CONTRACTOR(s) for resolution at the time of submitting quotation.
NO. JO/EWO
DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

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2.0
ENGG CERT
SCOPE
2.1 GENERAL
CCS VENDOR scope includes all aspects of CCS hardware, software and
engineering services required to meet the functionality described in this
document and the Scope of Work included in the project Scope of Work
document.
CCS VENDOR shall supply all elements of the CCS systems including design,
DESCRIPTION
engineering, fabrication, application programming, procurement, documentation,

testing, implementation, inspection and commissioning support.
CCS VENDOR shall provide specific anti-surge control line calculations and
detailed procedures for performance testing and surge testing for each
compressor specified for the project.
CCS VENDOR shall supply documentation, including control narratives, control
strategy drawings specific to the project, documentation of project specific
JO/EWO
configuration database, programming instructions, and final tuning constants.

CCS Vendor shall provide troubleshooting manuals, programming manuals,
operation manuals, and any project specific operating instructions.
DATE
CCS VENDOR shall develop the optimal control system design that shall protect
NO.
REV
the compressors from surge and provide performance control based on the
DISCIPLINE
ENGINEER
application and control objectives. The control schemes shall be developed as
necessary to suit the characteristics of the final selected compressors and
DATE: drivers.
PROJECT
ENGINEER
Additional requirements regarding the scope of work for CCS VENDOR are
DATE:
included in the Project Specification for Scope of Work and the Project
CERTIFIED Specification for PCS Vendor Services.
DATE: 2.2 VENDOR RESPONSIBILITY

CONSTRUCTION
AGENCY
CCS VENDOR shall be responsible to provide Compressor Control System
DATE:
(CCS) for the required compressor trains. The CCS includes Start-up /
OPERATIONS Shutdown sequencing, Anti-Surge Protection, Performance Control, and Load
Sharing.
DATE:
CCS VENDOR shall provide a System Design Document (SDD) for the CCS to
CONTROL NUMBER
VERIFICATION
PCS VENDOR to incorporate it into the overall PCS System Design Document
EDSD
(SDD). Refer to the project specification for SDD.

DATE:
CCS VENDOR shall provide input to PCS VENDOR to enable to timely design
BY:
and configuration of the PCS to CCS Interface. The submittal time for each
revision of these deliverables shall be agreed between PCS VENDOR and CCS
VENDOR.
(DCC) NO. _____________________

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PROJECT NAME OF A
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CCS VENDOR shall be responsible for the supply of all aspects of the CCS
ENGG CERT
including design, engineering, fabrication, procurement, configuration,

programming, integration, inspection, testing, and documentation.
CCS VENDOR shall be responsible for the supply and configuration of all
database(s) necessary for the proper operation of the CCS.
Refer to the Project Specification for PCS Scope of Work, for further details on
CCS VENDOR responsibility.
NO. DESCRIPTION
JO/EWO
DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

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3.0 FUNCTIONAL SPECIFICATION

ENGG CERT
3.1 GENERAL REQUIREMENTS

The CCS system shall be modular and configurable; accepting future expansion
or replacement of hardware and control program online.
Controls and instrumentation supplied by the CCS VENDOR shall be adequate
to control the compressor at all operating conditions.
All CCS system hardware and firmware shall be the latest “field proven” revision
DESCRIPTION
level at the time of the hardware freeze date as defined in the contract purchase
order or the Preliminary Design Review (PDR) whichever is later.
All CCS software shall be the latest revision level at the time of the Critical
Design Review (CDR). CCS VENDOR shall obtain an approval of software
version of CCS from PCS VENDOR / CONTRACTOR(s) / COMPANY prior to
implementation.
Key elements of the CCS, including hardware and software, shall be from the
JO/EWO
manufacturer’s standard product line. System components and sub assemblies

not previously provided successfully or field proven to other purchasers/
COMPANY shall not be considered for this project.
DATE
CCS Systems shall be technically qualified for use in Saudi Aramco by Process
NO.
REV
& Control Systems Department, Saudi Aramco, Dhahran and shall be listed as
DISCIPLINE
ENGINEER
technically acceptable according to SAES-Z-002.
DATE: 3.2 SYSTEM SUPPORT

PROJECT
ENGINEER
CCS VENDOR shall guarantee support of all hardware, firmware, and software
associated with the controller and I/O subsystems and any proprietary
DATE:
CERTIFIED communications equipment for a minimum period of twenty (20) years from the
hardware freeze date as defined in the contract purchase order or the
DATE: Preliminary Design Review (PDR), whichever is the latter. Support shall include
CONSTRUCTION
AGENCY spare parts and technical support. This support shall not be contingent on the
customer upgrading to later releases of software or hardware.
DATE:
OPERATIONS CCS VENDOR shall guarantee support of all workstations, servers, networking
equipment and other Commercial-off-the-Shelf (COTS) equipment for a
DATE:
minimum period of ten (10) years from the hardware freeze date as defined in
the contract purchase order or the Preliminary Design Review (PDR), whichever
CONTROL NUMBER
VERIFICATION
is the latter. Support shall include spare parts and technical support. This
EDSD
support shall not be contingent on the customer upgrading to later releases of

DATE:
software.
BY:
Withdrawal of product support for CCS vendor supplied equipment shall be

notified in writing to Saudi Aramco twenty-four (24) months in advance.

(DCC) NO. _____________________

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PROJECT NAME OF A
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3.3 DESIGN VERIFICATION

ENGG CERT
Final CCS design for each individual application shall be reviewed and approved
by the PCS VENDOR / CONTRACTOR(s) / COMPANY.
CCS VENDOR shall review the piping configuration and locations of vessels,
flow elements, control valves and check valves, compressor performance
curves, compressor driver characteristics, and line lengths and volumes, for
compatibility with optimum surge protection and energy efficiency.
CCS VENDOR shall ensure that the selection, location, orientation and range of
DESCRIPTION
field transmitters, flow elements, control valves and valve positioners are
compatible. The CCS VENDOR shall also check and advise on the Recycle
valve sizing criteria provided by the compressor vendor.
CCS VENDOR shall provide support to PCS VENDOR to conduct dynamic
simulation of critical compressor configuration if required by CONTRACTOR /
Vendor.
3.4 SEGREGATION
JO/EWO
Segregation requirements are based on the following criteria:

 Operating Areas
DATE
 Risk Areas
 Parallel Equipment
NO.
REV
DISCIPLINE CCS VENDOR shall segregate the design and configuration of the CCS
ENGINEER
hardware and software to provide risk isolation for common or parallel plant
DATE: equipment.
PROJECT
ENGINEER
Individual control algorithms for compressors installed in series within a single
train or operating area, using either multiple independent compressors or multi-
DATE:
CERTIFIED stage compression with a common driver, may be installed within a single CCS.
Where a CCS is used to control more than one compressor, I/O associated with
DATE: each compressor or compression stage shall be segregated into separate IO
CONSTRUCTION
AGENCY modules.
DATE:
Parallel Compressors within a train or between trains shall not be assigned to
OPERATIONS the same CCS.
Where a Process Interface Building (PIB) covers two or more Risk areas and/or
DATE: Operating Areas, all control equipment required for compressors located in
CONTROL NUMBER
VERIFICATION
different risk areas / operating areas shall be totally independent.

EDSD
The segregation philosophy and design shall be subject to CONTRACTOR (s)

and COMPANY review and approval.
DATE:
BY:
3.5 REDUNDANCY
Redundant CCS hardware shall include the following:

(DCC) NO. _____________________
 Power supplies for CCS equipment and field devices.


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 Main Processors / Controllers.

ENGG CERT
 Input and Output modules used for control.

 All communications modules, cabling and equipment required to
communicate to the DCS.
3.6 FAULT TOLERANT AND FAIL-OVER CAPABILITY

Each controller shall provide failsafe and fault tolerant control - i.e., on-line
redundancy with automatic fail-over and fallback strategies, to ensure
uninterrupted control in the event of failure of a single controller.
DESCRIPTION
Controllers and I/O shall be fully hot swappable. They shall be capable of being
replaced on-line without interfering with the operation of the active module and
without causing a disturbance to the operation of the compressor.
The failure of both the primary and redundant controllers shall cause the IO
module to drive the anti-surge recycle valve to its fail-safe position, fully open.
In the case of failure (loss of signal) of the supervisory or remote DCS setpoint,
the controller(s) shall retain the last valid setpoint.
JO/EWO
Non-volatile memory shall be used for retention of controller status and

operating data.
DATE
Any failure in any component of CCS shall initiate an alarm to identify the trouble
even if the controllers or other I/O system cards have already taken over.
NO.
REV
3.7 COMMUNICATIONS AND INTERFACE

DISCIPLINE
ENGINEER
DATE:
PROJECT
INTERFACE TO DCS
ENGINEER
Each CCS system shall be provided with a redundant communication link to

DATE:
CERTIFIED
the Distributed Control System (DCS). Modbus TCP/IP is preferred.
DATE:
The CCS shall pass to the DCS all data required for monitoring, alarming and
CONSTRUCTION
AGENCY
supervisory control of the compressor systems. In case of failure of
communication with the DCS, the controller operation shall not be impacted
DATE: and shall retain the last valid setpoint.
OPERATIONS
Data required to be exchanged between the CCS and DCS shall include but
DATE: not limited to the following:
CONTROL NUMBER
VERIFICATION
 All process signals wired directly to the CCS shall be transmitted to the
EDSD
DCS for indication


DATE:
Performance controller PV, SP, MV, and Mode

BY:
 Anti-surge controller PV, SP, MV, and Mode


Load Share controller PV, SP, MV, and Mode

 Compressor Operating Point relative to the Anti-surge control line

(DCC) NO. _____________________
 Any process limits or alarm limits configured in the CCS shall be

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PMT OPRNS
transferred to DCS as indication only.

ENGG CERT
 All data required to display the dynamic compressor operating map at the
DCS Operator Workstation.
CCS alarms to be communicated to the DCS shall include but not limited to
the following:
 Compressor Surge alarm

 Compressor near surge alarm

DESCRIPTION
Anti-surge fallback alarm

 Activation of any adaptive gain or open loop response in order to prevent
the compressor from entering surge
 Surge count alarm
 Any adjustment automatically made to the surge control line to prevent
further compressor surges shall be alarmed.
 Any transmitter failure alarm
 System alarm for any failure of any component of CCS
 Back-up controller activated
JO/EWO
 Compressor Controller self-test alarm

DATE
Alarms, with time stamp, shall be communicated to the Alarm Management

System. Refer to the Project Specification for Alarm Management System
NO.
REV
(ALMS) for further details.

DISCIPLINE
ENGINEER
Each compressor anti-surge recycle valve shall have the capability of being
DATE: remotely positioned from the DCS without over riding inherent surge
PROJECT
ENGINEER protection, or to be toggled remotely from the DCS between Manual and
Automatic modes.
DATE:
CERTIFIED
Auto failover to the redundant healthy communications channel shall be
provided without interrupting the communications.
DATE:
CONSTRUCTION
AGENCY PCS VENDOR shall ensure that the DCS and CCS clocks are synchronized
within 100 msecs.
DATE:
OPERATIONS
INTERFACE TO ESD
DATE:
All critical signals shall be hardwired between CCS and ESD to insure safe
CONTROL NUMBER
VERIFICATION
equipment operation and full equipment protection. Critical signals shall

EDSD
include, but not limited to the following:

DATE:

BY:
Start-up/shutdown signals from ESD

 Permissive to Start Signal
 Load/ Unload Signal


(DCC) NO. _____________________
Purge Signal
 Low Fuel supply pressure (for gas turbine)

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 Combustor Stage Flame Out (for gas turbine)

ENGG CERT
 Overspeed signal from Overspeed detection system to ESD (for turbine

speed controllers)
The I/O’s for these connection shall be shown in the respective I/O list
developed by CONTRACTOR(s). CCS VENDOR shall review and advice the
I/O signals required.
INTERFACE TO IAMS
DESCRIPTION
All HART field devices, including transmitters and positioners, that are
connected to CCS shall be interfaced with the IAMS. Refer to the Project
Specification for Instrument Asset Management System for further details.
INTERFACE TO CCS CONTROLLERS AND CCS WORKSTATIONS
CCS VENDOR shall provide all internal and external communications

equipment required for load-sharing and loop decoupling within a PIB.
JO/EWO
CCS VENDOR shall provide all communication equipment required to

communicate between CCS controllers and CCS Engineering Workstations
DATE
(EWS). Where communications extends beyond a single PIB (ie PIB to

CCR), procurement and installation of network cabling between buildings
NO.
REV
DISCIPLINE
shall be provided by the CONTRACTOR(s) based on network cable
ENGINEER
requirements provided by CCS VENDOR.
DATE:
PROJECT 3.8 CCS ENGINEERING WORKSTATION (EWS)
ENGINEER
GENERAL
DATE:
CERTIFIED
Each Risk Area containing a CCS shall have a dedicated Engineering
Workstation (EWS) to provide monitoring, configuration and diagnostic
DATE:
CONSTRUCTION information. Where a single PIB covers more than one risk area, a separate
AGENCY
EWS shall be provided for each risk area.
DATE:
OPERATIONS The CCS EWS shall have software and capabilities to perform the following:
DATE:
 CCS Application / Program development
 CCS System diagnostics
CONTROL NUMBER
VERIFICATION
 Dynamic monitoring of compressor operating parameters

EDSD
 High-speed data capture and logging for historical trend retrieval

DATE:
BY:
One master CCS EWS shall be provided in the engineering console located
in the CCR. The CCR EWS shall be connected to each individual EWS
through Ethernet connection provided by others. The CCR EWS shall be

(DCC) NO. _____________________
configured with full monitoring and trouble shooting capabilities for all CCS

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systems provided.
ENGG CERT
CCS VENDOR shall configure CCS application database and logics and build
all required graphics for each equipment connected to that EWS to facilitate
monitoring and troubleshooting activities.
The CCS EWS shall be located in the consoles using console furniture which
is the same design as that used to house other PCS workstations.
Console furniture for the CCS EWS(s) shall be provided by the PCS Vendor.
DESCRIPTION
CCS Vendor is not required to supply console furniture unless specifically

instructed otherwise in the applicable Scope of Work Document.
HARDWARE
CCS Workstations shall be the latest available CPU processor at the time of
PDR.
CCS Vendor shall provide 20” LCD flat screen monitors for all CCS
JO/EWO
workstations, unless specified otherwise by PCS vendor, to ensure

consistency of all workstations.
DATE
Each CCS EWS shall be connected to a networked printer (supplied by PCS

vendor) which is installed in the local console.
NO.
REV
DISCIPLINE
ENGINEER
Each CCS Workstation shall include the following as minimum.
DATE:
PROJECT
ENGINEER
 4 GB of RAM.
 300 GB Hard-drive
DATE:  One (1) CD/DVD Read/Writer.
CERTIFIED
 One (1) removable mass media storage drive. The removable mass
media storage drive shall be capable of backing up the hard disk on a
DATE:
CONSTRUCTION single device.
AGENCY
DATE: SOFTWARE
OPERATIONS
The configuration, maintenance and diagnostics of the CCS systems shall be

DATE: performed through the CCS EWS.
CONTROL NUMBER
VERIFICATION
CCS EWS shall be configured with multiple access levels with appropriate
EDSD
privileges for each access level. Multiple access levels shall include
DATE:
Administrator, engineering, maintenance, and operator.

BY:
The EWS shall have provision to edit, upload and download application
programs into the controllers.

(DCC) NO. _____________________

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Program development software shall be the latest model and revision level at
ENGG CERT
CDR time.
The operating system shall be the latest compatible version of Microsoft

Windows.
Each CCS workstation shall be installed and configured with latest available
anti-virus software.
Each CCS workstation shall have on-line, comprehensive electronic system

DESCRIPTION
documentation loaded on the hard disk.
Each EWS shall be equipped with all necessary software packages, options
and utilities required to perform application development, on-line compressor
monitoring, CCS system diagnostics and high-speed data and alarm/event
logging.
Software shall be configurable, menu driven, user friendly, password

protected and shall perform the following functions:
JO/EWO
a Compressor Map
DATE
Building and displaying a dynamic compressor map utilizing controller

measured process variables and calculated parameters in a coordinate
NO.
REV
DISCIPLINE system developed on the basis of polytropic head or compressor

ENGINEER
pressure ratio.
DATE:
PROJECT
b Dynamic Updating
ENGINEER
Displaying real-time surge limit and surge margin/control lines which

DATE:
CERTIFIED
are dynamically updated to reflect changing process inlet conditions
and compressor operating parameters - e.g., speed, etc.
DATE:
CONSTRUCTION
AGENCY
c Archiving
DATE: Automatically archiving controller events, such as surge detection, fault

OPERATIONS detection, and mode switching and records, at least once every
second.
DATE:
CONTROL NUMBER
The archiving software shall permit replay, or download of transient

VERIFICATION
conditions, process disturbances or shutdown data to digital storage

EDSD
media. The program shall also have the ability to be used as a trend
DATE:
recorder for multiple controllers.

BY:
d Alarm Information

(DCC) NO. _____________________
The software shall provide an alarm annunciation facility to dynamically

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display the status of all alarms. The facility shall provide a means of
ENGG CERT
displaying all current points, which are in alarm and shall distinguish
between acknowledged and unacknowledged status.
e Controller Configuration
Configuring all performance controllers, anti-surge controllers, and load

sharing controllers.
3.9 DISPLAYS
DESCRIPTION
CCS VENDOR shall build all required standard and specific application displays
required to control and monitor the equipment.
The following display types shall be provided as a minimum:
a. Dynamic process graphic showing the overall compressor train

process schematic which contains dynamically updated data for all
process variables and controllers being operated by the CCS.
JO/EWO
b. Dynamic Compressor Operating Map which displays the compressor

operating point in relation to the configured surge control line and
DATE
surge limit line.

NO.
REV
c. Operator interface displays to control parameter and setpoint

DISCIPLINE
ENGINEER adjustments.
DATE: d. System monitoring display which shows the status of all CCS
PROJECT
ENGINEER modules.
DATE: e. Alarm summary display.

CERTIFIED
f. Trend displays as indicated below.

DATE:
CONSTRUCTION
AGENCY Trend displays shall be provided with the following functionality:
DATE:
OPERATIONS
a. Displaying trends, either real-time or from event history files for
multiple controllers.
DATE:
b. Display of up to 8 process variables, in real-time, in a 0-100% scale.
CONTROL NUMBER
VERIFICATION
3.10 USER ACCOUNTS AND SECURITY

EDSD
DATE:
The CCS shall provide a comprehensive system to restrict system access,

BY:
perform administrative procedures and administer user accounts and security.


(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
Where the project is using a common Domain Controller / Active Directory

ENGG CERT
Server for user account and password administration of the PCS workstations
and servers, CCS workstations shall be integrated into the PCS Domain
Controller(s) by PCS VENDOR.
Access to CCS workstations shall be configured as per the requirements defined
in Saudi Aramco Engineering Standard, SAES-Z-001 section 14, “System
Access and Security”.
User Accounts and User Account Passwords shall be configured as per the
DESCRIPTION
requirements defined in SAES-Z-001, section 14.
3.11 DIAGNOSTICS
Each CCS shall employ self-diagnostics, which continuously monitor its own
status and indicate any fault that might occur. A fault indicator on the controller’s
operator interface shall be provided. Faults shall be communicated to the DCS
and configured as alarms with in the DCS.
The self diagnostics shall include, but not be limited to, the following failures:
JO/EWO
 Open or short circuited semiconductors.

 Failure or Fault condition of controllers or IO modules.
DATE
 Failure or fault condition of any power supply modiles.
3.12 RECYCLE VALVES

NO.
REV
DISCIPLINE
ENGINEER CONTRACTOR(s) shall provide the anti-surge recycle valves. Prior to procuring
the valves, CONTRACTOR shall submit recycle valve data sheets to CCS
DATE:
PROJECT
VENDOR for review. CCS VENDOR shall review the valve data sheets for the
ENGINEER
following valve requirements as a minimum.
DATE:  The valve trim characteristic shall be equal percentage or linear (as
CERTIFIED
recommended by the compressor or CCS VENDOR);
 The response time from fully closed to fully open shall be a nominal three
DATE:
CONSTRUCTION seconds or less (accomplished by using volume boosters, close tubing
AGENCY
connections and the correct orifice Cv, in accordance with the Compressor
DATE:
Manufacturer’s recommendations)
OPERATIONS  The ratio of the maximum selected valve capacity to the valve capacity
demanded by the compressor surge curve (worst case scenario) shall fall
DATE: between 1.8 and 2.2.

CONTROL NUMBER
Recycle valves shall be specified for Class VI shutoff.

VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
4.0 CONTROL REQUIREMENTS

4.1 COMPRESSOR PERFORMANCE CONTROL
CONTROL ALGORITHMS AND FALL-BACK STRATEGIES
The Anti-Surge and Performance Controller Algorithms (including “fall-Back”

strategies) shall meet the requirements of SAES-K-402 section 4.10
“Compressor Performance and Anti-Surge Control Requirements”.
DESCRIPTION
CONTROL OBJECTIVES
CCS shall meet or exceed the following control objectives:
a. Capacity Control
The performance control algorithm shall be designed to provide precise
capacity control for its associated compressor or compressor train.
JO/EWO
b. Temperature Control
Performance control for propane compressors shall include propane chiller
drum temperature control. CCS VENDOR shall implement drum temperature
DATE
control and quench control within the CCS system.

NO.
REV
DISCIPLINE
c. Process Limiting Variables
ENGINEER Maintain selected process limiting variables, such as compressor suction
and/or discharge pressure, gas turbine power and electric motor driver
DATE:
PROJECT current or power, within safe and acceptable operating ranges.
ENGINEER
DATE:
d. Overrides
CERTIFIED Electric motor driver current control loops, for motor-driven compressors, shall
override pressure control and/or load sharing for all compressors to limit
DATE: motor current to an acceptable level.
CONSTRUCTION
AGENCY
e. Control Mode Changes

DATE:
OPERATIONS
Control mode changes e.g., from manual to automatic, or vice-versa, shall be
bumpless.
DATE:
f. Compressor Loading / Unloading
CONTROL NUMBER
VERIFICATION
The compressor performance controller shall incorporate loading and

EDSD
unloading functions for bringing flow rates and discharge pressure up and
down smoothly during normal start-ups and shutdowns while maintaining
DATE:
BY:
process limiting variable such as motor horsepower and suction pressure

within safe operating ranges. Actual start-up and shutdown sequencing shall
be implemented within ESD.

(DCC) NO. _____________________
g. Start-up

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
There shall be an input signal to the CCS to indicate start-up. The CCS shall
ENGG CERT
automatically adjust the performance control variable while maintaining

overrides within safe Operating range during the start-up process.
Prior to compressor start-up, the anti-surge controller shall permit the recycle
valve to be driven fully open. Once the anti-surge controller is activated, it will
resume control of the recycle valve to maintain compressor minimum flow
requirements.
DESCRIPTION
Performance controller algorithms shall co-ordinate with anti-surge algorithms

in such a manner as to avoid the risk of slipping in to a surge cycle during
compressor start-up or shutdown, due to unforeseen discharge pressure or
capacity constraints.
h. Normal Shutdown
There shall be an input signal from ESD to CCS to indicate a normal
compressor shutdown has been initiated from the ESD system. CCS shall be
configured to automatically unload the compressor by ramping the recycle
JO/EWO
valve to fully open prior to the shutdown of the machine.

DATE
i. Emergency Shutdown
There shall be an input signal from ESD to CCS to indicate an emergency
shutdown has been initiated from the ESD system. CCS shall be configured
NO.
REV
DISCIPLINE to immediately drive the recycle valve to fully open upon receipt of this signal.
ENGINEER
DATE: j. Controller-Manipulated Value Display

PROJECT
ENGINEER The performance controller shall calculate and display process input variables
such as temperature, pressure, actual volumetric flow rates, and
DATE: compensated mass and volumetric flow rates in conjunction with compressor
CERTIFIED
curves.
DATE:
CONSTRUCTION k. Controller Interaction Minimization
AGENCY
Control loop decoupling shall be applied to minimize any potential
DATE:
destabilizing interactions between performance and anti-surge controllers, or
OPERATIONS other associated process controllers.
DATE:
4.2 ANTI-SURGE CONTROL
CONTROL NUMBER
VERIFICATION
SURGE MONITORING
EDSD
Surge detection and protection algorithms shall monitor one or more coincident
DATE:
variables such as compressor inlet flow, compressor discharge pressure,

BY:
motor/driver power, or other suitable process or machinery measurements that

serve as a dynamic precursor of an impending compressor surge.

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
CCS VENDOR shall co-ordinate with CONTRACTOR(s) to ensure that

ENGG CERT
CONTRACTOR(s) provides responsive, fast rise-time transmitters to measure

dynamic surge precursor variables such as compressor suction flow, and
compressor suction, discharge or differential pressure.
PROXIMITY TO SURGE
The anti-surge control algorithm shall continuously calculate the proximity of the
compressor operating point to the predetermined surge control line or other
DESCRIPTION
advance response control line.

Calculation shall be achieved using a multi-variable algorithm that compensates
for changes in process stream variables such as pressure, temperature, and
molecular weight of the process gas.
ANTI-SURGE STRATEGIES
Anti-surge controllers shall utilize either an open loop or closed loop adaptive
gain strategy to prevent a compressor from approaching or entering surge.
JO/EWO
Anti-surge control inputs include suction pressure (Ps), discharge pressure (Pd),
suction temperature (Ts), discharge temperature (Td), and differential pressure
DATE
across suction flow measuring element (Dp), compressor speed, and driver
power.
NO.
REV
DISCIPLINE The anti-surge control strategy shall have multiple levels of handling a
ENGINEER
compressor surge.
DATE:
PROJECT
ENGINEER
 The first level shall monitor the compressor’s rate of advance
towards its surge margin/control line and arrest the advance through
DATE: manipulation of its recycle valve, its driver speed, or compressor load.
CERTIFIED
 The second level shall rapidly advance manipulation of the recycle
valve, reset control margins, or adjust compressor operating parameters
DATE:
CONSTRUCTION whenever a compressor enters the operating region between its surge
AGENCY
margin/control line and its actual configured surge line.
DATE:
 The third level shall detect when the compressor has entered
OPERATIONS surge, generate an alarm, increment a counter, and immediately drive
the compressor to a safe operating region. All surge control margins and
DATE: advance response control margins shall be increased appropriately to
CONTROL NUMBER
move them further to the right on the compressor map.

VERIFICATION
EDSD
The CCS shall be configured to automatically increase the safety margin (ie the
DATE:
margin between the surge limit line and the surge control line) whenever the
BY:
compressor operating point moves past the surge limit line. It shall be possible
to adjust the percentage increase to the safety margin which is applied and to
enable or disable this feature within the CCS.

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
Recovery from an anti-surge control action, which causes the recycle valve to
ENGG CERT
open, shall be accomplished by utilizing a configurable exponential decay

function with a nominal decay time of 30 to 60 seconds.
The anti-surge strategies shall take into account all dynamic process changes,
so that the compressor is protected in all possible situations.
The anti-surge controller shall initially be set up using the compressor
VENDOR’s actual surge curve. This surge line shall be updated upon
completion of actual surge testing of the compressor using the actual process
DESCRIPTION
gas.
The anti-surge control module shall incorporate a surge detector and surge cycle
counter.
It shall be possible to reset the surge counter from the control module front panel
or from the DCS via redundant serial link.
The controller shall employ dedicated microprocessor based technology that
executes its algorithms and adjusts the controller output at least 10 times per
second.
JO/EWO
The anti-surge controller full cycle scan time shall not exceed 100 milliseconds.
DATE
Each anti-surge control algorithm shall exchange information with all other
stages of anti-surge and performance controllers controlling the same
compressor in order to implement feed forward control responses that help
NO.
REV
DISCIPLINE prevent loop interactions that might degrade the quality of surge protection.
ENGINEER
Each anti-surge controller shall exchange information with all other anti-surge
DATE:
PROJECT
controllers controlling other compressors operating in parallel. This shall prevent
ENGINEER
interactions between compressors degrading the quality of surge protection.
DATE: The output of the anti-surge controller shall be adapted to the size and speed of
CERTIFIED
the process disturbance as follows:
DATE:
CONSTRUCTION
 Minor disturbances shall be countered by smoothing algorithm that shall
AGENCY manipulate the recycle valve or other control variables to minimize
operational upsets.
DATE:
OPERATIONS
 Fast or large magnitude disturbances or the rapid movement of the
compressor towards its surge line shall be countered by a step change
DATE:
or dynamic gain element that causes the anti-surge valve to be driven
CONTROL NUMBER
VERIFICATION
towards its fully open position.

EDSD
The anti-surge controller shall incorporate functionality to enable the operator to

DATE:
BY:
manually set a low-limit for the Recycle valve position. This function shall not
inhibit the opening of the recycle valve by the automatic anti-surge controller
when required to protect the compressor from entering surge.

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
A graphical display of the compressor’s control map which dynamically indicates

ENGG CERT
the compressor’s operating point relative to the surge control line shall be shall
be provided. This information shall be available from the CCS Engineering
Workstation (EWS) and at the DCS Operator Console.
FALLBACK STRATEGIES
Fallback strategies shall be implemented in order to maintain operation of the

compressor within safe operating range in the event of a failure of any process
input to the anti-surge controller. The following fallback strategies shall be
DESCRIPTION
available as a minimum.
Failure of Suction Flow transmitter

Upon failure of or invalid suction flow transmitter signal, the controller shall
revert to a fixed recycle valve position.
Failure of suction pressure transmitter

Upon failure or invalid of the suction pressure transmitter signal, the controller
shall revert to a fixed compression ratio using the minimum expected suction
JO/EWO
pressure.
DATE
Failure of discharge pressure transmitter

Upon failure or invalid discharge pressure transmitter signal, the controller
NO.
REV
shall revert to a fixed compression ratio using the maximum discharge

DISCIPLINE
ENGINEER
pressure.
DATE: Failure of compressor speed signal

PROJECT
ENGINEER Upon failure or invalid compressor speed signal, the controller shall revert to
a fixed speed.
DATE:
CERTIFIED
4.3 LOAD SHARING CONTROL
DATE: Load sharing shall apply where compressors are operated in parallel.
CONSTRUCTION
AGENCY
The load share controller shall be configurable to enable distribution of load by
DATE:
either suction header pressure, discharge header pressure, mass flow rate, or
OPERATIONS other suitable control variable of the composite compressor train.
The load share controller shall simultaneously adjust the operating point of each
DATE:
of the compressors equidistant from its respective surge control line, or as
CONTROL NUMBER
VERIFICATION
configured by the user.

EDSD
Load redistribution shall occur automatically, even when compressors are being
DATE:
brought off or online, if gas inlet process conditions change or in the event of a
BY:
change in compression efficiency.


(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
It shall be possible to switch any of the compressors within a train between load
ENGG CERT
sharing and stand-alone operation (in either automatic or manual control), via a
command issued through the DCS.
Load-sharing algorithms shall be provided for controlling interactions between
each combination of parallel compressors identified within the scope of the
project.
4.4 HIGH SPEED DATA AND TRIP EVENT CAPTURING SYSTEM

A high-speed data capture and archiving station shall be provided.
DESCRIPTION
The system shall capture all compressor operating parameters at a maximum

scan rate of 100 milliseconds. the moment of start-up and all Shutdowns.
High speed data capture shall be stored to harddrive during critical event
periods. Critical events are defined as startup, shutdown, compressor surge and
emergency trip events.
High speed recording and archiving of all CCS inputs/outputs including all
analog & discrete data shall be performed for a time period of at least three (3)
JO/EWO
minutes prior and one (1) minute after the critical event.
The CCS shall incorporate ‘Trip Event Replay’ functionality to enable replay of
DATE
process data prior to any trip for offline diagnostic analysis.

Data shall be automatically archived for the last three critical events at a
NO.
REV
DISCIPLINE minimum. The system shall automatically overwrite older trip event data in order
ENGINEER
to automatically manage hard-disk storage requirements.
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
5.0 COMPRESSOR OPERATING PHILOSOPHY

ENGG CERT
5.1 GENERAL
Start-up and shutdown of compressors shall be in accordance with the general
philosophy described below. CONTRACTOR(s) shall develop the final detailed
start-up and shutdown requirements for each compressor service to suit
particular application and the actual compressor chosen.
5.2 START-UP
DESCRIPTION
Start-up of a compressor shall take place primarily in the field at the local control
panel adjacent to the machine, with supervision from the control room operator
via the DCS. Start-up sequence logic shall also be provided to ensure the
compressor is started in a safe manner.
If necessary the operator in the field shall purge the compressor with process
gas by opening the suction EIV bypass valve and opening the vent valve to HP
flare either on compressor discharge or downstream of the after cooler.
JO/EWO
The compressor is pressurized by the field operator opening the suction ZV

bypass valve, ensuring all vent valves are closed. Once the differential pressure
DATE
across the bypass valve falls below its trip value the operator can open the main
suction EIV and close the bypass valve.
NO.
REV
DISCIPLINE
With the compressor pressurized, the field operator drains the casing of any
ENGINEER condensed liquid. When the draining is complete the field operator confirms the
operation by pressing the local ‘Casing Drain Acknowledge’ button, which sends
DATE:
PROJECT a signal to the start-up logic and is indicated on the DCS.
ENGINEER
The field operator starts the compressor auxiliaries.

DATE:
CERTIFIED The start-up logic will check that all permissives are healthy, which shall typically
include:

DATE:
CONSTRUCTION Suction Emergency Isolation valve position
AGENCY
 Compressor suction pressure
DATE:
 Seal gas differential pressure
OPERATIONS  Recycle valve >90% open
 Casing Drain Acknowledge
DATE:  Lube oil rundown tank level
CONTROL NUMBER

VERIFICATION
Lube oil pressure and temperature

EDSD
Provided all permissives are healthy and have been cleared, the 'Permissives
Cleared' indication at the local control panel (LCP) and DCS console are
DATE:
BY:
activated.

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
Once the ‘Permissives Cleared’ indication is set, the field operator presses the
ENGG CERT
‘Ready to Start Request’ button on the LCP. When the request is received in the
DCS, the control room operator confirms the request by pressing the DCS
‘Ready to Start’ button. This sets the ‘Ready to Start’ indications on the LCP
and the DCS, and provides a final permissive to the start-up logic.
The field operator presses the ‘Start’ button on the LCP. This will start the
applicable driver. The compressor will start in full recycle.
When the compressor is running, the field operator opens the bypass valve of
DESCRIPTION
discharge ZV. Once the differential pressure across the bypass valve falls below
its trip value the operator can open the discharge ZV and close the bypass
valve.
When the compressor discharge ZV is open the compressor can be loaded as
required, utilizing the ramp-up/ramp down function of the performance controller,
and transferred to automatic control.
5.3 SHUTDOWN
JO/EWO
A normal stop can be initiated from the CCR Operator console or the LCP, which
will shutdown the compressor in a planned sequence. Logic shall be
implemented within the CCS and ESD to automatically unload the compressor to
DATE
full recycle before the driver is stopped.

An ESD shutdown can be initiated from the CCR Operator console, local control
NO.
REV
DISCIPLINE panel, or automatically by the ESD system due to improper process conditions.
ENGINEER
ESD shutdown will cause the compressor to stop immediately. CCS shall be
DATE: configured with an input from ESD sytem to indicate an ESD shutdown has
PROJECT
ENGINEER occurred. The CCS anti-surge control will open the recycle valve fully to prevent
surge occurring upon receipt of this signal.
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
6.0 CABINET REQUIREMENTS

6.1 GENERAL
CCS VENDOR shall provide free-standing cabinets to house the CCS
equipment, associated auxiliary equipment and marshalling of IO signals.
CCS cabinets shall be of the same shape, size and color as the other PCS
system cabinets.
DESCRIPTION
CCS cabinets shall comply with the requirements specified in Saudi Aramco
Material Standard for Instrument control cabinets, 34-SAMSS-820 “Instrument
Control Cabinet – Indoor” for construction, wiring, layout, terminal block design,
tagging and power distribution.
CCS Cabinets shall have front and rear access. Each cabinet shall be supplied
with full width removable top and bottom entry plates.
CCS VENDOR shall provide detailed cabinet layout drawings which meet the
requirements specified in 34-SAMSS-820.
JO/EWO
CCS VENDOR shall co-ordinate with CONTRACTOR in the layout of CCS

cabinets within the PIB(s).
DATE
6.2 MARSHALLING CABINETS

NO.
REV
DISCIPLINE Dedicated terminal strips shall be provided in the backside of CCS system
ENGINEER
cabinets to enable marshalling of field cables. Marshalling of field cables in the
DATE:
CCS cabinets shall comply with the requirements specified in 34-SAMSS-820.
PROJECT
ENGINEER CCS cabinets shall be provided with HART Multiplexors to interface SMART
Transmitters and Valve Positioners related to CCS to the Instrument Asset
DATE:
CERTIFIED
Management System (IAMS). PCS VENDOR shall interface the HART
Multiplexors with the IAMS.
DATE:
CONSTRUCTION
AGENCY
6.3 INTER-CABINET WIRING
CCS VENDOR shall provide all required intra-cabinet wiring for the CCS within
DATE:
OPERATIONS
the process interface buildings. Where there is a requirement for
interconnection of CCS cabinets between different buildings, CONTRACTOR(s)
shall be responsible for installation of cabling between the buildings.
DATE:
CONTROL NUMBER
CCS VENDOR shall specify the type and permissible maximum length of cable
VERIFICATION
that can be installed between units without affecting the rated performance,
EDSD
failsafe or self-checking operation of the CCS.

DATE:
BY:
CCS VENDOR shall also specify the maximum allowable resistive and
capacitive loads that can be used together with the required cable screening and
shielding.
(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
6.4 POWER & HEAT CALCULATION

ENGG CERT
CCS VENDOR shall provide a report in tabular format to show power, heat
dissipation, and weight by cabinet.
CCS VENDOR shall submit the calculation basis for computing the UPS power
required on an individual cabinet basis.
6.5 POWER SUPPLIES

Two, 230vAC, 60HZ, Uninteruptible Power Supply (UPS) feeds fed from
DESCRIPTION
different power distribution panels shall be supplied to each CCS cabinet.

CCS VENDOR shall provide a power distribution panel inside the CCS cabinets.
The panel shall accept redundant 230 vAC UPS power circuits.
The CCS Vendor shall distribute power to various loads within the cabinet using
branch circuits. Each branch circuit shall be protected by a circuit breaker.
The loss of a single UPS power feed shall not cause a shutdown of the CCS or a
process disturbance.
JO/EWO
Syswtem and field power supplies shall be fully redundant and sized to
continuously supply 125% of its connected load while one power supply unit is
removed (at rated voltage, ampacity, and at maximum ambient temperature of
DATE
50°C).
NO.
REV
Each power supply shall be protected by a properly sized circuit breaker or fuse.
DISCIPLINE
ENGINEER
Output protection shall be provided via a combination of strategies (i.e., diode
auctioning/isolation - where diodes are rated at not less than 300% of the
DATE: maximum power supply current delivery and time-over voltage/over-current
PROJECT
ENGINEER protection).
DATE:
One 230 VAC, 60 Hz utility power circuit from the utility power distribution panel
CERTIFIED shall be provided for each CCS cabinet. This circuit shall be provided for
cabinet lighting and convenience outlets. Two (2) convenience outlets shall be
DATE:
CONSTRUCTION
provided in each CCS cabinet.
AGENCY
6.6 CABINET PROTECTION EQUIPMENT

DATE:
OPERATIONS The CCS shall provide all necessary equipment required to monitor the status of
each UPS circuit and to provide an alarm to the DCS on loss of power.
DATE:
CCS VENDOR shall provide two cooling fans in each cabinet containing Power
CONTROL NUMBER
VERIFICATION
Supplies.
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
Each cabinet containing power supplies shall be equipped with High Sensitivity
ENGG CERT
Smoke Detection (HSSD) system. CONTRACTOR(s) shall be responsible for

specifying the actual make and model number of the HSSD to CCS VENDOR.
CCS VENDOR shall be responsible for installing the detector inside of the
cabinets, wiring the device to terminal strips and including the part on the
relevant cabinet drawings. CONTRACTOR(s) shall be responsible for wiring
from the terminal strip located in the CCS Cabinet to the Fire Alarm Panel.
CCS VENDOR shall provide a cabinet temperature alarm for each cabinet
containing power supplies. The temperature alarm shall be an input to the DCS
DESCRIPTION
for cabinet alarming.
6.7 LOCAL CONTROL PANELS

Where specified in the CCS section of the Project specific Scope of Work
Document, CCS VENDOR shall provide Local Control Panels which meet the
following requirements:
Local control panels shall provided for each compressor to enable startup,
shutdown, and operation of the compressor including auxiliary equipment.
JO/EWO
Local control panels shall contain all hardware, cabinets, cabinet wiring, power
supplies, internal power distribution, pushbuttons, switches and indicators
DATE
necessary to safely start, stop and monitor the equipment from the field.
Local control panels shall comply with 34-SAMSS-821 “Instrument Control
NO.
REV
DISCIPLINE Cabinets – Outdoors” for design, construction, environmental conditions and

ENGINEER
electrical area classification.
DATE:
PROJECT
Local control panel Cabinets shall be 316L stainless steel; minimum 12 gauge
ENGINEER
(for corrosion resistance) and weather tight (NEMA 4X or IP 56 for ingress
protection). All hardware including hinges, latches, fittings, etc., shall be 316L
DATE:
CERTIFIED stainless steel for the cabinet and interior interface panels (as applicable).
CCS VENDOR shall coordinate with CONTRACTOR(s) and Compressor
DATE:
CONSTRUCTION
Manufacturer for the design and construction of the Local Control Panels.
AGENCY
6.8 GROUNDING
DATE:
OPERATIONS CCS VENDOR shall issue a document detailing the manufacturer’s standard
and recommended grounding for the CCS system to CONTRACTOR(s).
DATE:
CCS VENDOR, PCS VENDOR and CONTRACTOR(s) shall ensure that the
CONTROL NUMBER
VERIFICATION
CCS Grounding System is installed as per recommended practices.

EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
7.0 STAGING, INSPECTION AND TESTING

7.1 GENERAL
CCS VENDOR shall be responsible for the inspection and quality assurance of
all materials, equipment and for the standard of the workmanship.
CCS VENDOR shall be responsible for providing all instrumentation, software
and other equipment necessary for complete and efficient testing of the entire
DESCRIPTION
system.
CCS Vendor shall comply with requirements for “Staging, Inspection and
Testing” of the CCS equipment. Specifications for staging, inspection and
testing are detailed in the project specification for PCS Vendor Services as
applicable.
CCS Vendor shall deliver one (1) representative CCS cabinet to PCS VENDOR
FAT location to facilitate the Integrated Factory Acceptance Testing (IFAT).
JO/EWO
7.2 FACTORY ACCEPTANCE TESTING

CCS VENDOR shall be required to execute and document a comprehensive
DATE
Factory Acceptance Test (FAT) of the System hardware and software at the
factory prior to shipment. The FAT shall be witnessed by COMPANY and
CONTRACTOR(s) representatives.
NO.
REV
DISCIPLINE
ENGINEER FAT shall be conducted to prove / validate the system hardware, software and
application / logic programming including functional testing, reliability testing,
DATE:
PROJECT
and application logic testing.
ENGINEER
FAT testing shall be conducted in compliance with SAEP-1634 requirements.
DATE: The following requirements are additional mandatory requirements to be tested
CERTIFIED
during FAT.
DATE: The FAT shall test the complete CCS including all composite modules,
CONSTRUCTION
AGENCY
interconnecting wiring, and associated circuitry shall be subject to both hardware
and software functional tests. These tests shall demonstrate the functionality of
DATE: each individual component module within the integrated CCS, including
OPERATIONS
individual I/O point tests.
DATE:
All CCS software and application logic shall be verified and tested using
dynamic simulation techniques to ensure the proper functioning of the system.
CONTROL NUMBER
VERIFICATION
The ability to make and save application program changes online without
EDSD
interrupting the operation of the system shall be tested.

DATE:
BY:
Fail safe output states will be tested in response to simulated input/output

module and CPU failures and loss of CCS module power.
All diagnostic routines shall be tested by simulating CPU, I/O module failures,
(DCC) NO. _____________________
field input failures, power supply failure, and communications interface failures.

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
8.0 DOCUMENTATION
ENGG CERT
CCS VENDOR shall provide all documentation as specified in the related Saudi
Aramco Material System Specifications and Non-Material Requirement Forms
for the CCS.
CCS VENDOR shall provide the following typical documents as a minimum:
 CCS Cabinet Dimensional Outline drawings
 CCS Cabinet Detailed Layout drawings
DESCRIPTION
 CCS System architecture and communications drawings

 CCS Cabinet wiring, power distribution and grounding drawings
 Power consumption and cooling requirements
 Control Narratives and logic drawings
 I/O listings, I/O module assignment and I/O Termination layout
All drafting work performed by CCS VENDOR shall conform to Saudi Aramco
drafting standards.
JO/EWO
Additional details on requirements for documentation are located in the Project

Specification for Process Control System Vendor Services document.
NO. DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
9.0 SPARE PARTS AND CONSUMABLES

CCS VENDOR shall provide recommended spare parts and consumables, as
defined in the Project Specification for Process Control System VENDOR
Services document as applicable.
CCS VENDOR shall provide a continuing after-sale system for notification of
hardware and software enhancements, which could affect the operation of the
system.
NO. DESCRIPTION
JO/EWO
DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
10.0 VENDOR SERVICES

10.1 GENERAL
The CCS VENDOR shall provide services such as administration, inspection,
QA/QC, testing, delivery, site installation, documents and NMR as defined in the
Project Specification for Process Control System VENDOR Services.
10.2 STARTUP ASSISTANCE AND PERFORMANCE TESTING

DESCRIPTION
CONTRACTOR(s) shall have overall responsibility for installation, testing and

commissioning of compressors, including the activities described below.
System inspection shall be completed on the compressor, piping, check valves,
instrumentation and primary control elements.
Primary control elements shall be checked for accuracy, repeatability and speed
of response.
Prior to any field ‘surge’ testing, a simulation of upsets within the system,
JO/EWO
approved by COMPANY, shall be conducted by CONTRACTOR(s).

Prior to system startup, CONTRACTOR(s) shall conduct a simulated
DATE
performance test to verify the ability of the system to meet the stated
performance objectives.
NO.
REV
DISCIPLINE CONTRACTOR(s) shall provide experienced engineers from CCS VENDOR to

ENGINEER
provide the following on-site services:
DATE:
PROJECT
ENGINEER
 CCS VENDOR shall verify appropriate transmitter calibration data is
entered into the CCS.
DATE:
CERTIFIED  CCS VENDOR shall monitor the input and output signals of the
controllers to check for validity during initial startup of the compressors.
DATE:

CONSTRUCTION
AGENCY CCS VENDOR shall participate in ‘Surge’ testing under the supervision
of CONTRACTOR(s).
DATE:
OPERATIONS
 CCS VENDOR shall update the CCS configuration parameters with
actual compressor surge curve data established during actual compressor
DATE:
surge testing.
CONTROL NUMBER
VERIFICATION

EDSD
CCS VENDOR shall provide conduct tuning of Anti-surge,

Performance and Load Share Controllers to meet the required control
DATE:
BY:
objectives.

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
CONTRACTOR(s) shall observe the operation of each compressor after surge

ENGG CERT
testing and tuning adjustments have been made, noting any potential control
systems or operational problems.
NO. DESCRIPTION
JO/EWO
DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
APPENDIX A: ACRONYMS AND DEFINITIONS

ENGG CERT
ACRONYMS
AC Alternating current
BSCFD Billion standard cubic feet per day
CCS Compressor Control Systems
CCR Central Control Room
CD Compact Disk
DESCRIPTION
CDR Critical Design Review

CD-ROM Compact Disk – Read Only Memory
Cv Coefficient of Flow
DCS Distributed Control System
dP Differential Pressure
ECC Emergency Control Centre
EPC Engineering, Procurement and Construction
ESD Emergency Shutdown
JO/EWO
FAT Factory Acceptance Test

HP High Pressure
HZ Hertz
DATE
I/O Input/output
LCD Liquid Crystal Display
NO.
REV
LP Low Pressure
DISCIPLINE
ENGINEER LSTK Lump Sum Turn Key
MB Mega Byte
DATE:
PROJECT
MTBF Mean Time Between Failures
ENGINEER
MTTF Mean Time to Failure
MTTR Mean Time to Repair
DATE:
CERTIFIED OPC Object embedded Linking for Process Control
P&ID Piping and Instrument Diagram
DATE: PC Personal Computer
CONSTRUCTION
AGENCY PCS Process Control System
ADS Program Development Workstation
DATE: PIB Process Interface Building
OPERATIONS
QA/QC Quality Assurance/Quality Control
SAES SAUDI ARAMCO Engineering Standard
DATE:
SAMSS SAUDI ARAMCO Materials System Specification
CONTROL NUMBER
VERIFICATION
SOE Sequence of Event

Power – Operated Emergency Isolation Valve (EIV)
EDSD
ZV
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
DEFINITIONS
Anti-Surge Control action taken as a result of detecting incipient surge

or encountering a surge cycle, in order to prevent
compressor damage and process upsets without
sacrificing energy efficiency or process capacity, such that
the anti-surge recycle valve is driven open, the compressor
DESCRIPTION
speed, is altered, or a combination of both.
Availability The probability that a system will perform its designated

function when required to do so. It is expressed as the
fraction (or percentage) of time a system or individual
module remains on line and performs as specified during
an observation period. It is calculated as follows:
A = MTTF/MTBF or
A = MTTF/(MTTF + MTTR)
JO/EWO
Buffer A temporary software storage area where data resides

DATE
between time of transfer from an external media and time

of program initiated I/O operations.
NO.
REV
DISCIPLINE COMPANY Refers to a SAUDI ARAMCO organization (ARAMCO

ENGINEER
Services COMPANY, ARAMCO Overseas COMPANY,
DATE: SAUDI ARAMCO)
PROJECT
ENGINEER
Diagnostic Coverage The percent of failures of modules, units, external wiring,
DATE: Factor Internal wiring, cables, interconnections, and functions that
CERTIFIED
are detected by built-in test functions or by a suitable test
program.
DATE:
CONSTRUCTION
AGENCY
Fail-Safe Design features incorporated for automatically
DATE:
counteracting the unsafe effects of an anticipated possible
OPERATIONS source of failure. A system is fail-safe if failure of a
component, signal, or utility initiates action that returns the
DATE: system to a safe condition.
CONTROL NUMBER
VERIFICATION
Failure The state of a module, which is not capable of performing

EDSD
its specified function. The manifestation of an error in CCS

DATE:
hardware, firmware or software.

BY:
Fault-Tolerance The property of a system which permits it to carry out its

assigned function even in the presence of one or more

(DCC) NO. _____________________
faults in its hardware or software components.

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
Incipient Surge Process conditions (flow, pressure, temperature), detected

by compression train instrumentation, which are precursors
of radical flow and pressure reversals across a compressor
rotor or case.
Noise Any component of a transducer output that does not

represent the variable intended to be measured.
DESCRIPTION
Performance Control Control actions taken in order to maintain a primary

process variable at a given set-point, to maintain process
limiting variables within safe or acceptable ranges (while
not violating specified constraints) and, where applicable,
to distribute the total flow or pressure demand using more
than one compressor train.
PID A type of closed loop control algorithm, which has

proportional, integral and derivative functions. Separate
JO/EWO
output responses may be coupled with PID control to

achieve optimum control of compressors, i.e., open loop
DATE
response, step-changes in manipulated variables,

adaptive gain and tuning parameters, etc.
NO.
REV
DISCIPLINE Rack Cabinet used for mounting enclosure for the monitoring
ENGINEER
system. The racks to be used for these systems shall be
DATE: 19” wide.
PROJECT
ENGINEER
Reliability The probability that when operating under stated
DATE: environmental conditions, the system will perform
CERTIFIED
continuously, as specified, over a specific time interval.
DATE:
CONSTRUCTION Surge Dynamic self-oscillation of pressure and flow which can
AGENCY
occur across a single stage, or across multiple stages, of
DATE:
a compressor in response to low or high discharge
OPERATIONS pressure.
DATE: Surge Curve(s) Curve(s) which delineate the points at which a compressor
experiences a flow reversal due to its inability to impart
CONTROL NUMBER
VERIFICATION
forward momentum to the fluid it is acting upon. Surge

EDSD
curves normally plot polytropic head vs. volumetric flow at

DATE:
a particular compressor speed.

BY:
Surge Detector A sensing circuit and associated logic designed to utilize a

unique process parameter, such as inlet gas flow rate, as

(DCC) NO. _____________________
a precursor to detect the first flow and pressure reversal

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
which occurs across a compressor stage, or case, and all

ENGG CERT
subsequent reversals which occur thereafter.
Surge Limit Line A linearised control line inserted between the anti-surge
margin line and the actual compressor surge curve, which
has the function of initiating an open-loop step change to
drive the anti-surge Recycle Valve open.
Surge Margin/Control A control line which is constructed a certain distance to the

DESCRIPTION
Line right of a classical surge curve, for a given compressor

speed to give the controller time to respond before the
compressor reaches surge.
NO. JO/EWO
DATE
REV
DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
ENGG CERT
APPENDIX B: APPLICABLE DOCUMENTS
The design, materials and construction of the equipment described herein shall be in
accordance with the latest revision of the documents listed below which are part of
this specification.
SAUDI ARAMCO Engineering Standards

DESCRIPTION
SAES-J-700 Control Valves

SAES-J-902 Electrical Systems for Instrumentation
SAES-K-402 Centrifugal Compressors
SAES-Z-002 Technically Acceptable Process Automation Systems
SAUDI ARAMCO Materials System Specification
34-SAMSS-820 Instrument Control Cabinets - Indoor

34-SAMSS-821 Instrument Control Cabinets - Outdoor
JO/EWO
DATE
SAUDI ARAMCO Engineering Procedures
SAEP-99 Process Automation Networks and Systems Security

NO.
REV
DISCIPLINE SAEP-302 Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco

ENGINEER
Engineering Requirement
DATE: SAEP-1610 Preparation of Functional Specification Documents
PROJECT
ENGINEER SAEP-1624 Preparation of System Design Document
SAEP-1626 Configuration and Graphic Guidelines
DATE: SAEP-1628 Preparation of Integration Specifications Document
CERTIFIED
SAEP-1630 Preparation of Integrated Factory Acceptance Test (I-FAT) Test
DATE:
Procedure Document
CONSTRUCTION SAEP-1634 Factory Acceptance Test of Process Automation Systems
AGENCY
SAEP-1636 Installation and Checkout Plan
DATE:
SAEP-1638 Site Acceptance Test Plan
OPERATIONS SAEP-3101 Equipment & Spare Parts Data Requirement for Contractor
Produced Equipment
DATE:
CONTROL NUMBER
American National Standards Institute (ANSI) / National Electric Manufacturers

VERIFICATION
Association (NEMA)
EDSD
DATE:
ANSI/NEMA ICS 2 Industrial Control Devices

BY:
ANSI/NEMA ICS 6 Enclosures for Industrial Controls and Systems


(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A
1]
PMT OPRNS
American National Standards Institute (ANSI) / National Fire Protection

ENGG CERT
Association (NFPA)
ANSI / NFPA 70 National Electric Code (NEC)
Instrumentation Systems and Automation Society
ISA S5.1 Instrumentation Symbols And Identification

ISA S75.01 Control Valve Sizing Equations
DESCRIPTION
International Electro technical Commissions (IEC)
IEC 61000-6-2 Generic Standards - Inmmunity for Industrial

Environments
IEC 61000-4-3 Testing and measurement techniques - Radiated,

Radio Frequency, Electromagnetic Field Immunity
JO/EWO
Tests
International Organization For Standardization

DATE
ISO 9000 Quality systems – Model for quality assurance in

NO.
REV
design/development, production, installation and servicing.

DISCIPLINE
ENGINEER
DATE:
PROJECT
ENGINEER
DATE:
CERTIFIED
DATE:
CONSTRUCTION
AGENCY
DATE:
OPERATIONS
DATE:
CONTROL NUMBER
VERIFICATION
EDSD
DATE:
BY:

(DCC) NO. _____________________

GEN J PP-XXXX
PROJECT NAME OF A

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EDSD REV

Copyright© Saudi Aramco 2014. All rights reserved.

DWG.TYPE PLANT NO. INDEX

1.0 INTRODUCTION ............................................................................... 4

1.4 REFERENCE DOCUMENTS ............................................................ 5

3.1 GENERAL REQUIREMENTS ............................................................ 8

3.3 DESIGN VERIFICATION ................................................................... 9

DISCIPLINE 3.5 REDUNDANCY ................................................................................. 9

4.0 CONTROL REQUIREMENTS ......................................................... 17

5.0 COMPRESSOR OPERATING PHILOSOPHY ................................ 23

5.1 GENERAL ....................................................................................... 23

5.2 START-UP ...................................................................................... 23

BY DRAWING COMPLETION CERTIFICATE

5.3 SHUTDOWN ................................................................................... 24

COMPRESSOR CONTROL SYSTEM (CCS) DOC 2

6.0 CABINET REQUIREMENTS........................................................... 25

6.1 GENERAL ....................................................................................... 25

6.8 GROUNDING .................................................................................. 27

10.0 VENDOR SERVICES ................................................................... 31

10.1 GENERAL ....................................................................................... 31

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

COMPRESSOR CONTROL SYSTEM (CCS) DOC 3

referenced Saudi Aramco standards, material specifications and project

1.2 FACILITIES DESCRIPTION

1.3 ACRONYMS & DEFINITIONS

DISCIPLINE  ‘SHALL’ and ‘MUST’ are used in the imperative sense.

CONTRACTOR refers to all applicable contractors.

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

COMPRESSOR CONTROL SYSTEM (CCS) DOC 4

1.4 REFERENCE DOCUMENTS

See Appendix B of this document for a list of applicable reference documents.

1.5 CONFLICTS AND DEVIATIONS

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

COMPRESSOR CONTROL SYSTEM (CCS) DOC 5

engineering, fabrication, application programming, procurement, documentation,

configuration database, programming instructions, and final tuning constants.

DATE: 2.2 VENDOR RESPONSIBILITY

(SDD). Refer to the project specification for SDD.

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

COMPRESSOR CONTROL SYSTEM (CCS) DOC 6

including design, engineering, fabrication, procurement, configuration,

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

COMPRESSOR CONTROL SYSTEM (CCS) DOC 7

3.0 FUNCTIONAL SPECIFICATION

3.1 GENERAL REQUIREMENTS

manufacturer’s standard product line. System components and sub assemblies

DATE: 3.2 SYSTEM SUPPORT

support shall not be contingent on the customer upgrading to later releases of

Withdrawal of product support for CCS vendor supplied equipment shall be

OF THIS DRAWING IS COVERED, FOR ALL

BY DRAWING COMPLETION CERTIFICATE

notified in writing to Saudi Aramco twenty-four (24) months in advance.

COMPRESSOR CONTROL SYSTEM (CCS) DOC 8

3.3 DESIGN VERIFICATION