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PROPRIETARY INFORMATION
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This document contains proprietary information developed by and for exclusive use of Saudi Electricity
Company. Your acceptance of the document is an acknowledgement that it must be used for the
identified purpose/application and during the period indicated. It cannot be used or copied for any other
purposes nor released to others without prior written authorization of Saudi Electricity Company. Saudi
Electricity Company will not be responsible for misuse and/or misapplication, and any harm resulting
therefrom. Saudi Electricity Company also reserves the right to take any necessary actions to protect its
interest against unauthorized use.
APPROVED
Engr. Khalaf M. AI-Ma'ashi
Division Manager,
Engineering Support
Engr. Abdullah M. AI-Garni
Department Manager,
Transmission Standards &
Specifications
Date of Aooroval:
\.
BY
Engr. Saleh N. AI-Sohaibani
Executive Director,
Engineering & Projects
December 03, 2008
TRANSMISSION ENGINEERING STANDARD
TESB 10605RO/MHS
PAGE: 1 OF 12
TRANSMISSION ENGINEERING STANDARD
TES-B-106.05, Rev. 0
TABLE OF CONTENTS
1.0
SCOPE
2.0
GENERAL
3.0
APPLICABLE CODES AND STANDARDS
4.0
DESIGN CRITERIA
5.0
MATERIAL STOARGE AND DISTRIBUTION
6.0
CONTROL PANEL
7.0
DETECTION AND ALARM SYSTEM
7.1
7.2
7.3
7.4
7.5
Detectors
Manual Release
Abort Stations
Audible and Visual Alarms
Caution and Advisory Signs
8.0
SYSTEM AND CONTROL WIRING
9.0
TESTING AND INSPECTION
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 2 OF 12
TRANSMISSION ENGINEERING STANDARD
1.0
TES-B-106.05, Rev. 0
SCOPE
This Transmission Engineering Standard specifies the minimum requirements for the
design, installation, testing and commissioning of HFC-227ea (Heptafluropropane), clean
agent fire suppression system, intended to be used in the Fire Protection Systems of Saudi
Electricity Company (SEC) .
It is important that the fire protection of a building or facility shall be considered as a whole.
HFC-227ea System forms a significant part of the available fire protection facilities. This
will be in addition to the supplementary measures such as the provision of portable fire
extinguishers or other mobile appliances for first aid or emergency use, or to deal with
special hazards.
2.0
GENERAL
Any conflicts between the Standard and other SEC Transmission Engineering Standards
(TES), related SEC Material Standard Specifications (TMSS), Standard Drawings and other
international Codes and Standards shall be resolved by the Loss Prevention Development
Division of SEC.
Any deviations or exceptions to the Standard that provide less than the minimum
requirements of this Standard shall require a written approval of SEC Loss Prevention
Development Division.
3.0
APPLICABLE CODES AND STANDARDS
The latest revisions/amendments of the following Codes and Standards at the time of bidding or
purchase shall be applicable for the equipment/material covered in this TES. In case of conflict,
the vendor/manufacturer may propose equipment/material conforming to one group of Industry
Codes and Standards quoted hereunder without jeopardizing the requirement of this TES.
3.1
TES-P-119.21
Fire and Loss Prevention Requirement
3.2
ANSI
American National Standards Institute
3.3
NFPA 2001
Clean Agent Fire Extinguishing Systems
3.4
NFPA 70
National Electrical Code
3.5
NFPA 72
National Fire Alarm Code
3.6
FM
Factory Mutual Fire Protection Approval Guide
3.7
UL
Fire Protection Equipment Directory
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 3 OF 12
TRANSMISSION ENGINEERING STANDARD
4.0
TES-B-106.05, Rev. 0
DESIGN CRITERIA
4.1
The system shall provide a HFC-227ea minimum design concentration of 7.2% by
volume for class A hazards and 9.0% by volume for Class B hazards, in all areas and/or
protected spaces, at the minimum anticipated temperature within the protected area.
System design shall not exceed 10.5% for normally occupied spaces, adjusted for
maximum space temperature anticipated, with provisions for room evacuation before
agent release.
4.2
The system shall be complete in all ways. It shall include all mechanical and electrical
installation, all detection and control equipment, agent storage containers, HFC-227ea
agent, discharge nozzles, pipe and fittings, manual release and abort stations, audible
and visual alarm devices, auxiliary devices and controls, shutdowns, alarm interface,
caution/advisory signs, functional checkout and testing, training and all other operations
necessary for a functional UL Listed and/or FM approved Clean Agent Suppression
System.
4.3
The system(s) shall be actuated by a combination of ionization and/or photoelectric
detectors installed for maximum area coverage of 250 sq. ft. (23.2 m2) per detector, in
both the room, underfloor and above ceiling protected spaces. If the airflow is one air
change per minute, photoelectric detectors only shall be installed for maximum area
coverage of 125 sq. ft. (11.6 m2) per detector.
4.4
Detectors shall be cross-Zoned detection requiring two detectors to be in alarm before
release.
4.5
Automatic operation of each protected area shall be as follows.
4.5.1
Actuation of one (1) detector, within the system, shall:
a.
Illuminated the "ALARM" on the control panel face.
b.
Energize an alarm bell and/or an optional visual indicator.
c.
Transfer auxiliary contacts which can perform auxiliary system functions
such as:
i) Operate door holder/closures on access doors,
ii) Transmit a signal to a fire alarm system,
iii) Shutdown HVAC equipment.
d.
TESB10605R0/MHS
Light an individual lamp on an optional annunciator.
Date of Approval: December 03, 2008
PAGE: 4 OF 12
TRANSMISSION ENGINEERING STANDARD
TES-B-106.05, Rev. 0
4.5.2 Actuation of a 2nd detector, within the system, shall:
a.
Illuminate a "PRE-DISCHARGE" lamp on the control panel face.
b.
Energize a pre-discharge horn or horn/strobe device.
c.
Shut down the HVAC system and/or close dampers.
d.
Start time-delay sequence (not to exceed 60 seconds).
e.
System abort sequence is enabled at this time.
f.
Light an individual lamp on an optional annunciator.
4.5.3 After completion of the time-delay sequence, the Clean Agent System shall
discharge and the following shall occur:
a.
Illuminate a "SYSTEM FIRED" lamp on the control panel face.
b.
Shutdown of all power to high-voltage equipment.
c.
Energize a visual indicator(s) outside the hazard in which the discharge
occurred.
d.
Energize a "System Fired" audible device. (Optional)
4.5.4 The system shall be capable of being actuated by manual discharge devices
located at each hazard exit. Operation of a manual device shall duplicate the
sequence description above except that the time delay and abort functions shall
be bypassed. The manual discharge station shall be of the electrical actuation
type and shall be supervised at the main control panel.
4.6
The HFC-227ea Clean Agent System materials and equipment shall be standard
products of the supplier's latest design and suitable to perform the functions intended.
When one or more pieces of equipment must perform the same function(s), they shall be
duplicates produced by one manufacturer.
4.7
All devices and equipment shall be UL Listed and/or FM approved.
4.8
Each system shall have its own supply of clean agent.
4.9
The system design can be modular, central storage, or a combination of both design
criteria.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 5 OF 12
TRANSMISSION ENGINEERING STANDARD
5.0
TES-B-106.05, Rev. 0
4.10
Reserve cylinders shall be provided, filled with quantity as main and connected to the
system. Main/Reserve switch shall be installed and must be fully supervised.
4.11
Systems shall be designed in accordance with the manufacturer's guidelines.
4.12
Each supply shall be located within the hazard area, or as near as possible, to reduce the
amount of pipe and fittings required to install the system.
MATERIAL STORAGE AND DISTRIBUTION
5.1
The Clean agent shall be stored in proper storage Containers. Containers shall be superpressurized with dry nitrogen to an operating pressure of 360psi at 70°F (24.8 bar at
20°C). Containers shall be of high-strength low alloy steel construction and conform to
NFPA 2001.
5.2
Each container shall have three labels written in English.
5.2.1 Two labels shall be centrally positioned on both sides of the container, directly
opposite each other.
5.2.2 The third label shall be located centrally on the top of the container.
5.3
The labels shall be clearly legible and permanently attached to the container.
5.4
The label shall include the following information:
Stock Number
Type of Agent
Agent Concentrate Percentage
Manufacturer’s Name and Address
Date of Manufacture
Batch Number
5.5
Containers shall be actuated by a resettable electric actuator with mechanical override
located at each agent container or connected bank of cylinders. Non-resetable or
explosive devices shall not be permitted.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 6 OF 12
TRANSMISSION ENGINEERING STANDARD
TES-B-106.05, Rev. 0
5.6
Each container shall have a pressure gauge and low pressure switch to provide visual
and electrical supervision of the container pressure. The low-pressure switch shall be
wired to the control panel to provide an audible and visual "Trouble" alarms in the event
of the container pressure drops below 247 psi (17 bar). The pressure gauge shall be
color coded to provide an easy, visual indication of container pressure.
5.7
Each container shall have a pressure relief provision that automatically operates before
the internal pressure exceeds 750 psi (517 bar).
5.8
Engineered discharge nozzles shall be provided within the manufacturer's guidelines to
distribute the HFC-227ea agent throughout the protected spaces. The nozzles shall be
designed to provide proper agent quantity and distribution.
5.8.1 All piping shall be reamed, blown clear and swabbed with suitable solvents to
remove burrs, mill varnish and cutting oils before assembly.
5.8.2 All pipe work shall be painted red.
5.8.3 All pipe threads shall be sealed with Teflon tape pipe sealant applied to the male
thread only.
6.0
CONTROL PANEL
6.1
The control panel shall be PCR releasing panel
6.2
The control system and its components shall be UL listed and FM approved for use as a
local fire alarm system with releasing device service.
6.3
The control system shall perform all functions necessary to operate the system detection,
actuation and auxiliary functions.
6.4
The control system shall include battery standby power to support 24 hours and 30
minutes in alarm.
6.5
The control system shall be microprocessor based utilizing a distributed processing
concept. A single microprocessor failure shall not impact operation of additional
modules on the system.
6.6
The control system shall be capable of supporting Cross Zoned Detection.
6.7
The control system shall supply integrated 2.0 amp power supply circuitry.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 7 OF 12
TRANSMISSION ENGINEERING STANDARD
6.8
TES-B-106.05, Rev. 0
Each control system have four (4) initiating circuits.
6.8.1 Each control circuit shall be capable of Class A (Style D) or Class B (Style A)
operation.
6.8.2 Each circuit shall be capable of operating up to fifteen (15) approved detectors
for thirty (30) detectors per system.
6.8.3 Each circuit shall be capable of monitoring contact devices configured for
manual release, manual alarm, system abort, trouble input or auxiliary (non-fire)
input.
6.9
Each control system shall contain release circuits for activation of an extinguishing/
suppression system(s).
6.9.1 Each circuit shall be capable of Class B (Style Y) operation.
6.9.2 Each circuit shall be rated for 1.5 amp at 24 VDC.
6.10
Each control system shall contain two (2) indicating appliance circuits for annunciation.
6.10.1 Each circuit shall be capable of Class A (Style B) or Class B (Style Y) operation.
6.10.2 Each circuit shall be rated for 1.5 amp at 24 VDC.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 8 OF 12
TRANSMISSION ENGINEERING STANDARD
7.0
TES-B-106.05, Rev. 0
DETECTION AND ALARM SYSTEM
7.1
Detectors
The detectors shall be spaced and installed in accordance with the manufacturer's
specifications and the guide lines of NFPA 72.
7.2
Manual Release
7.2.1 The electric manual release switch shall be a dual action device which provides a
means of manually discharging the Suppression System when used in
conjunction with the control system.
7.2.2 The Manual Release switch of Manual Pull station shall be a dual action device
requiring two distinct operations to initiate a system actuation.
7.2.3 Manual actuation shall bypass the time delay and abort function shall cause the
system to discharge and shall cause all release and shutdown devices to operate
in the same manner as if the system had operated automatically.
7.2.4 A Manual Release switch shall be located at each exit from the protected hazard.
7.3
Abort Stations
7.3.1 The Abort Stations shall be supervised and shall indicate a trouble condition at
the control panel, if depressed, and no alarm condition exists.
7.3.2 "Locking: or "Keyed" abort stations shall not be permitted.
7.3.3 Abort stations shall be located within the protected area and shall be located near
the means of egress for the area and shall be of a type that requires constant
manual pressure to cause abort. The abort stations shall not be of a type that
would allow the system to be left in an aborted mode without someone present.
7.4
Audible and Visual Alarms
7.4.1 Alarm audible and visual signal devices shall operate from the control panel.
7.4.2 A Strobe device shall be placed outside, and above, each exit door from the
protected space. Provide an advisory sign at each light location.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 9 OF 12
TRANSMISSION ENGINEERING STANDARD
7.5
TES-B-106.05, Rev. 0
Caution and Advisory Signs
Signs shall be provided to comply with NFPA 2001 and the recommendations of the
system equipment supplier.
7.5.1 Entrance sign
1 No. required at each entrance to a protected space.
7.5.2 Manual discharge sign
1 No. required at each manual discharge station.
7.5.3 Flashing light sign
1 No. required at each flashing light over each exit from a protected space.
8.0
SYSTEM AND CONTROL WIRING
8.1
All system wiring shall be furnished and installed by the contractor.
8.2
All wiring shall be installed in rigid galvanized steel conduit (RSC), or conduit, and
must be installed and kept separate from all other building wiring.
8.3
All system components shall be securely supported independent of the wiring. Runs of
conduit and wiring shall be straight, neatly arranged, properly supported, and installed
parallel and perpendicular to walls and partitions.
8.4
The sizes of the conductors shall be those specified by the manufacturer. Color-coded
wire shall be used. All wires shall be tagged at all junction points and shall be free from
shorts, earth connections (unless so noted on the system drawings) and crosses between
conductors. Final terminations between the control panel and the system field wiring
shall be made under the direct supervision of a factory-trained representative.
8.5
All wiring shall be installed by qualified individuals, in a neat and workmanlike manner,
to conform to the National Electrical Code, Article 725 and Article 760, except as
otherwise permitted for limited energy circuits, as described in latest edition of NFPA
70. Wiring installation shall meet all local, state, province and/or country codes.
8.6
The complete system electrical installation, and all auxiliary components, shall be
connected to earth ground in accordance with the National Electrical Code.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 10 OF 12
TRANSMISSION ENGINEERING STANDARD
9.0
TES-B-106.05, Rev. 0
TESTING AND INSPECTION
9.1
After the system installation has been completed, the entire system shall be checked out,
inspected and functionally tested by qualified and trained supplier personnel, in
accordance with the manufacturer's recommended procedures and NFPA standards.
9.2
All containers and distribution piping shall be checked for proper mounting and
installation.
9.3
All electrical wiring shall be tested for proper connection, continuity and resistance to
earth.
9.4
The complete system shall be functionally tested in the presence of SEC representative.
Testing shall be carried out by an independent Agency not affiliated with any firm
involved in the design or construction phase of the project. All functions, including
system and equipment interlocks, must be operational at least five (5) days prior to the
final acceptance tests.
9.5
Contractor shall submit a "Test Plan" describing procedures to be used to test the control
system(s). The Test Plan shall include a step-by-step description of all tests to be
performed and shall indicate the type and location of test apparatus to be employed. The
tests shall demonstrate the operational and installation requirements of this specification
have been met. All tests shall be conducted in the presence of SEC representative and
shall not be conducted until the Test Plan has been approved.
9.6
The tests shall demonstrate that the entire control system functions as designed and
intended. All circuits shall be tested: automatic actuation, solenoid and manual
actuation, HVAC and power shutdowns, audible and visual alarm devices and manual
override of abort functions. Supervision of all panel circuits, including AC power and
battery power supplies, shall be tested and qualified.
9.7
A room pressurization test shall be conducted, in each protected space, to determine the
presence of openings which would affect the agent concentration levels.All testing shall
be in accordance with NFPA 2001, Appendix B.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 11 OF 12
TRANSMISSION ENGINEERING STANDARD
TES-B-106.05, Rev. 0
9.8
If room pressurization testing indicates that openings exist which would result in
leakage and/or loss of the extinguishing agent, the CONTRACTOR shall be responsible
for coordinating the proper sealing of the protected space(s). The CONTRACTOR shall
ensure the success of the room pressurization tests. If the first room pressurization test is
not successful, in accordance with these specifications, the CONTRACTOR shall be
directed to determine, and correct, the cause of the test failure. The CONTRACTOR
shall conduct additional room pressurization tests, at no additional cost to the SEC, until
a successful test is obtained. Copies of successful test results shall be submitted to the
SEC for record.
9.9
The CONTRACTOR shall provide two (2) inspections of each system installed under
this contract, during the one-year warranty period. The first inspection shall be at the
six-month interval, and the second inspection at the 12-month interval, after system
acceptance. Inspections shall be conducted in accordance with the manufacturer's
guidelines and the recommendations of the NFPA 2001.
9.10
Prior to final acceptance, the CONTRACTOR shall provide operational training to the
concerned SEC personnel. Each training session shall include control panel operation,
manual and (optional) abort functions, trouble procedures, supervisory procedures,
auxiliary functions and emergency procedures.
9.11
Prior to final acceptance, the CONTRACTOR shall provide complete operation and
maintenance instruction manuals, four (4) copies for each system, to SEC. All aspects of
system operations and maintenance shall be detailed, including piping isometrics, wiring
diagrams of all circuits, a written description of the system design, sequence of
operation and drawing(s) illustrating control logic and equipment used in the system.
Checklists and procedures for emergency situations, troubleshooting techniques,
operation and maintenance shall be included in the manual.
TESB10605R0/MHS
Date of Approval: December 03, 2008
PAGE: 12 OF 12