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Thermal power plant fire protection overall technical specifications

This technical specification is applicable to the design and supply, installation, construction, and acceptance of fire detection and alarm systems, gas fire extinguishing systems, and water firefighting systems in the technical transformation (2X300MW) project of Ulan Bator Thermal Power Plant.

1. Specifications and Standards

National Fire Protection Association NFPA Standard

GBJ116-98 Fire Detection and Alarm System Design Specification

GB11920-89 General technical conditions for centralized control device of electrical part of power station

GB4720-84 Low voltage electrical equipment

JB616-84 Power System Secondary Circuit Screen (Taiwan) General Specifications

Shell protection class for IEC 144 low-voltage switchgear and control equipment

Mathematical Interface to ANSI 488 Programmable Instruments

Binary Logic Diagram of ISA-55.2 Process Operation

Binary Logic Diagram of ISA-55.3 Process Operation

ISA-55.4 Instrument Loop Diagram

Terminal Board for NEMA-ICS4 Industrial Control Equipment and Systems

NEMA-ICS6 Industrial Control Equipment and System Housing

GB50229-96 Code for Designing Fire Protection in Thermal Power Plants and Substations

2. System description and technical requirements QQ截图20180516141242.jpg

2. 1 Fire detection and alarm system detection area

According to the layout of the process system, the project area is divided into at least the following alarm areas for detection and control: the central control building is an alarm area; each unit in the main plant is an alarm area (#1 unit includes the inspection building); The coal system and oil depot area and the ash removal building are an alarm area; the production office building is an alarm area.

· The detection range of the alarm area of the centralized control building mainly includes:

(1) Central control room, engineer room, electronic equipment room and cable mezzanine

(2) Electrical UPS room, battery room, thermal-combustion engine MCC room, electrical storage room and cable bridge

(3) Power distribution sections, lighting sections and other distribution rooms, diesel generator room

(4) Cable shafts of centralized control buildings

· The detection range of the #1 crew alarm area mainly includes:

(1) Cable Shafts and Bridges in Steam Turbine Rooms

(2) Electrical distribution rooms and their cable compartments, excitation cabs

(3) Turbine main tank and reservoir, feed pump tank

(4) Turbine head and turbine bearings

(5) Oil pipelines below the steam turbine operation layer and in the middle layer

(6) The intersection of the main steam pipe and the oil pipeline in the main building

(7) EH oil device, generator seal oil device

(8) Coal Mill Oil Station (5 sets)

(9) #1 boiler burner area

(10) #1 Main Transformer, #1 Plant High-Change, High-Voltage Start Alternate Change

(11) #1 furnace cable shaft and bridge

(12) Raw coal bunker

(13) Inspection Building

· The detection range of the #2 crew alarm area mainly includes:

(1) Cable Shafts and Bridges in Steam Turbine Rooms

(2) Electrical distribution rooms and their cable compartments, excitation cabs

(3) Turbine main tank and reservoir, feed pump tank

(4) Turbine head and turbine bearings

(5) Oil pipelines below the steam turbine operation layer and in the middle layer

(6) The intersection of the main steam pipe and the oil pipeline in the main building

(7) EH oil device, generator seal oil device

(8) Coal Mill Oil Station (5 sets)

(9) #2 boiler body burner area

(10) #2 main transformer and #2 plant high change

(11) #2 Furnace Cable Shafts and Bridges

(12) Raw coal bunker

· The detection scope of the coal transportation system, oil storage area and ash removal comprehensive building mainly includes:

(1) Coal control building control room and its cable mezzanine, fan room

(2) Power distribution room and transformer room of coal transportation complex

(3) Transfer stations and silos, coal bunkers, coal crusher rooms and coal handling bridges

(4) Fuel pump room and oil storage area

(5) Ash removal complex power distribution room

· The scope of detection of production office buildings should mainly include:

(1) Office

(2) Cable trays, shafts

For the details of the protection zone detection methods, see "Automatic alarm system detection mode selection list"

2. 2 Technical Requirements for Fire Fighting

2. 2.1 Water Fire Control Interface

This project is equipped with automatic water fire protection project, see "Main Building Automatic Water Fire Protection System Configuration List", which is divided into wet alarm valve and deluge valve. The interface between the fire alarm system and the wet alarm/demon valve local control panel is as follows:

Item Open Valve Signal Hydraulic Switch Feedback Signal Control Panel Power Supply Remarks

Wet alarm valve local control panel No dry contact 1 220VAC, fire alarm system provides interface point on local control panel terminal strip

The rain valve locally controls the dry contact 1 dry contact 1 220VAC, the fire alarm system provides

Solenoid valve dry contact 1 dry contact 1 220VAC, fire alarm system provided

2.2.2 Gas Fire Control Interface

There are two kinds of clean gas fire extinguishing systems and water fire extinguishing systems for this project gas fire protection. Refer to "IG541 Gas Fire Extinguishing System Protected Area List" for details on the protection zone.

The gas extinguishing system distributes a flooded system for a set of IG541 gas fire extinguishing combinations. The system is equipped with three startup methods: automatic control, manual control and mechanical emergency operation. All fire alarm signals in the protective zone of the gas fire extinguishing system; gas pre-injection and injected signals can be displayed, memorized, and alarmed on the fire alarm master disk.

2.2.3 Fire and smoke control equipment and air-conditioning system fire control linkage control

2.2.3.1 The fire detection alarm system and central air conditioning system of the centralized control building have a fire alarm linkage interface. When a fire occurs, the air conditioning unit is shut down in conjunction. The linkage signal is a hard-wired dry contact.

The configuration of the air-conditioning unit is as follows: (two units)

Item Type Quantity Notes

Air Conditioning System Air-cooled combined air-conditioning unit 2 sets, 1 for 1 for centralized control room/electronic equipment room

2.2.3.2 For rooms that use clean gas to extinguish fire, when the fire occurs and the fire extinguishing system is started, the fire alarm system shall send a linkage signal to automatically close the fire damper in the protection zone. After the fire extinguishing is confirmed, the system can remotely activate the protection zone. Exhaust fan, open the exhaust valve; reset the fire damper.

The exhaust fan, exhaust valve, and fire damper are configured as follows: (two units)

Protection area Smoke exhaust fan Smoke exhaust valve Fire damper Remarks

Central control room 2 sets of 2 4 sets of control building 12.60 meters layer

Engineer Room None No 2

#1 machine electronic equipment room 2 units 2 units 1

#2 electronic equipment room 2 2 2

Printer Room None None 1

2.2.3.3 For fire extinguishing rooms using IG541, the fire alarm system shall send a linkage signal to automatically shut down the fan in the protection zone when the fire occurs and the fire extinguishing system is started. After the fire suppression is confirmed, the system can remotely open the protection zone. Fans and corresponding electric shutters.

The configuration of fans and electric shutters is as follows: (Two units)

Protection Area Fans Electric Shutters Remarks

Central control building 9.6 meters cable sandwich 3 sets 3 Central control building 9.6 meters layer

#1 DC UPS Room 1 No Central Control 6.3m Floor

#2 DC UPS Room 1

#1 battery room 1

#2 battery room 1

#1 machine security section 1

#2 machine security section 1

#1 Thermal Control MCC Room

#2 Thermal Control MCC Room

Public section 3 sets No centralized control floor 0.0 meters

#1 boiler section 3 units

#2 boiler section 3 units

#1 380V power distribution room No #1 steam engine room 0.0M

#2 380V power distribution room No #2 steam engine room 0.0M

#1 Machine Cable Sandwich No #1 Steam Turbine Room 4.5M

#2 Machine Cable Sandwich No #2 Engine Room 4.5M

#1 Machine 6KV Distribution Room No #1 Engine Room 8.6M

#2 Machine 6KV Distribution Room No #2 Machine Room 8.6M

2.2.3.4 The 0.0m and 5.8m floors of the central control building are also equipped with a new air unit. When there is a fire in the relevant room of this floor, the two new air units will be shut down.

2.2.3.5 There are two diesel generator rooms in the 0.0m level of the central control building. When the fire occurs, the indoor fans shall be shut down and each diesel generator room shall be equipped with two fans.

2.2.3.6 The fire detection alarm system and the centralized air-conditioning system of the production office building have a fire alarm linkage interface. When a fire occurs, the relevant equipment of the centralized air-conditioning system is shut down. The linkage signal is a hard-wired dry contact.

The configuration of the centralized air conditioning system is as follows:

Item Type Quantity Notes

Air Conditioning System Air-cooled roof screw unit 2 units, 1 for 1 for cooling

Circulating water pump 2 sets, 1 with 1 spare

Water constant pressure device 1 set

New Air Blower Unit 5 units 1 at each floor

Fan coil 150 units

Gas Fire Extinguishing System Technical Specifications QQ截图20180516141709.jpg

1. Design and acceptance criteria

The design, installation, commissioning, acceptance and supervision of this system shall meet the following specifications and standards:

National Fire Protection Association Standard "NFPA2001 Cleansing Agent Fire Extinguishing System" Latest Version

"Code for fire protection of building design" (GBJ16-87 2001 edition)

"Code for construction and acceptance of gas fire extinguishing systems" (GB50263-97)

"Inert gas IG-541 fire extinguishing system technical specification" (DGJ-2001) (approved draft)

"Fire Automatic Alarm System Design Specification" (GB50116-98) and other related standards, specifications

"Pressure Vessel Safety Technology Supervision Regulations"

2. IG541 gas fire extinguishing system

2.1 Equipment Specifications

An IG541 gas fire-extinguishing combined all-submerging system is set up in the project control and control building.

2.2 Technical Requirements

2.2.1 Scope of protection and design conditions

The protective areas in the centralized control building are: centralized control room, engineer room, electronic equipment room, 9.6 meters of cable sandwich and other 6 rooms. For details of the name, size, room temperature, system type and extinguishing concentration of each protection area, refer to “IG541 Gas Fire Extinguishing System Protection Area List”.

2.2.2 In the IG541 gas fire protection system, there is a set of centralized bottle station fixed combination and total flooding systems in the centralized control building.

2.2.3 The design amount of fire extinguishing agent shall be calculated according to the sum of the fire extinguishing amount and the remaining amount in the maximum one protective zone in the combined distribution system, and the loss of the chemical from the door and window shall be taken into account. The centralized bottle station is located within 5.8 meters of the central control building, and the size of the bottle station is LXB=9.8X5.5m.

2.2.4 System Description and Design Requirements

2.2.4.1 The design and installation of the system must meet the requirements of the latest edition of NFPA2001, and also meet the requirements of the "Inert Gas IG-541 Fire Suppression System Technical Regulations" (DGJ-2001), if any contradictions are implemented according to higher requirements.

2.2.4.2 Basic System Functions

(1) This project is equipped with an automatic fire detection and alarm system. The system can automatically detect fires, automatically alarm, automatically start the fire extinguishing system, operate related equipment of the system's interlocking actions, apply fire extinguishing agents, and close the protection zone accordingly. Fire dampers, fans, doors and windows and other facilities.

(2) The whole IG541 gas fire extinguishing system shall be provided with three starting modes of automatic control, manual control and mechanical emergency operation. The entire system should be set up from, manually operated transfer switch, can convert automatic operation to manual operation. The transfer switch and manual control of the system should be located outside of each guard area for ease of operation. Manual operation should be able to complete all operations of system startup in one place.

(3) The system shall be equipped with an independent emergency manual operation mechanism to prepare for emergency release of gas extinguishing agent in case of failure of other operation modes. The emergency manual operation mechanism adopts mechanical type and can complete all operations of releasing fire extinguishing agent in one place. .

(4) Sound and light alarms for the release of fire and extinguishing media shall be provided in each protection zone (fire alarm signals and operational warning signals shall be different). In addition, light alarms shall be provided at the entrance and exit of the protection zone, and the alarm time should not be less than the fire extinguishing. The time required for the process, and the alarm signal can be manually removed. IG541 gas fire extinguishing system protection signs and system gas emission light signs shall be provided at the entrance of the protection zone.

(5) Each guard area is provided with a local control panel (box), and an emergency stop switch (which must be permanently pressed until the system is reset) capable of shutting off the system is enabled so that the system can temporarily stop the release of gas. If it is necessary to continue starting For a fire extinguishing system, simply release the switch. In addition, emergency repair switches for the system should also be provided on the site.

(6) The system shall have a self-checking system that will automatically conduct regular inspections to monitor faults and fault alarms.

2.2.4.3 System Automatic Operation and Control

When the system adopts automatic start-up mode, it shall start after receiving two independent fire detection alarm signals within the same protection zone. The process is as follows: After receiving two independent fire detection alarm signals, the fire extinguishing system is activated. Fire and sound and light alarms are issued in the protection zone and the entrance to remind people in the protection zone to release the fire extinguishing agent. The gas control panel of the bottle station, the fire control panel of the bottle station, and the local control panel of the protective area emit sound and light alarms, and the fire-extinguishing agent is delayed for 20 seconds (0 to 20 seconds adjustable in the field). At this time, the pressure signal on the pipeline is sent to the gas fire control panel. And the fire alarm master signaled to confirm whether the fire protection agent fired protection zone is consistent with the fire protection zone. At the same time, this signal is transmitted to the protection zone entrance, and the light word prompting signal is being fired and the signal continues. To confirm that the fire has been extinguished.

2.2.4.4

The IG541 gas fire control panel is located in the bottle station. The fire alarm signal received by the IG541 comes from the fire automatic detection and alarm system (this system is set separately), and the feedback signal in the protection zone can be returned to the automatic fire detection and alarm system. Make sure that the area where the fire extinguishing agent has been sprayed is the same as the area where the fire occurred. The signal transmission between the two systems shall use the bus communication signal with address code, and its interface is located at the bottle station gas fire control panel. After the fire extinguishing system is actuated, the control panel returns a signal that the gas fire extinguishing system has acted to the automatic fire detection and alarm system. The control panel should also have system failure display, power display, manual operation buttons and so on. From the gas fire control panel to the protective area on-site (box), gas fire extinguishing systems and fire extinguishing system instructions and sound and light warnings are included in the scope of this tender.

Water Fire Protection System Technical Specifications

Equipment specification

All control valve groups (including deluge valves and wet alarm valve groups) of the automatic water fire protection system of this project adopt imported equipment, and the rest can be made domestically. There are four types as follows:

(1) Water spray fire extinguishing system

(2) Rain extinguishing system

(3) Water curtain fire extinguishing system

(4) Closed Sprinkler System

2. Technical requirements

2.1 Design and Acceptance Criteria

The design, installation, commissioning, acceptance and supervision of automatic water fire protection systems shall meet the following specifications and standards:

(1) National Fire Protection Association NFPA Standard

(2) Design Specification of Automatic Sprinkler System (GB50084-2001)

(3) "Code for design of water spray fire extinguishing system" (GB50219-95)

(4) Specification for Construction and Acceptance of Automatic Sprinkler Systems (GB50261-96)

(5) "Code for Design of Fire Protection in Thermal Power Plants and Substations" (GB50229-96)

(6) "Fire Automatic Alarm System Design Specification" (GB50116-98) and other related standards and specifications.

4.2 The project's automatic water fire-fighting system is divided into 62 independent automatic fire-extinguishing systems. For details, please refer to the “Main Water Plant Automatic Water Fire Protection System Configuration List”;

4.3 System Description and Design Requirements

4.3.1 This project is equipped with an automatic fire detection and alarm system. The system can automatically detect fires, automatically alarm, automatically start the water fire protection system, and operate related equipment of the system to start fire extinguishing.

4.3.2 The closed automatic sprinkler system is filled with pressurized water in the pipelines before and after the alarm valve. When a fire occurs in the protected area, the ambient temperature in the area rises, the thermal element of the nozzle is heated, and the system can immediately spray water and fire. A fire alarm is issued in situ and a fire suppression system action signal is sent to the fire alarm master via the water flow indicator.

4.3.3 After the deluge valve of the rain sprinkler system, the pipe is usually an empty pipe. When the fire alarm is triggered, the fire detection system automatically or manually opens the deluge valve so that all the open nozzles on the pipeline of the system controlled by the valve spray water at the same time. Fire extinguishing, at the same time, fire alarms are issued in the local area, and fire extinguishing system action signals are sent to the fire master through the pressure switch. Each rain fire extinguishing system shall be provided with two types of automatic control and manual control, and should be set up from, manually operated, transfer switches, which can convert automatic operation into manual operation. The transfer switch and manual control of the system should be located on the spot. On the control panel, manual operation can also be achieved by directly operating the valve.

4.3.4 After the deluge valve of the water spray fire extinguishing system, the pipe is usually an empty pipe. When the fire alarm is triggered, the fire detection system automatically or manually opens the deluge valve so that all the open sprinklers on the pipeline of the system controlled by the valve are simultaneously sprayed with water. At the same time, a fire alarm was issued in the local area and a fire suppression system action signal was sent to the fire master through the pressure switch. Each rain fire extinguishing system shall be provided with two types of automatic control and manual control, and should be set up from, manually operated, transfer switches, which can convert automatic operation into manual operation. The transfer switch and manual control of the system should be located on the spot. On the control panel, manual operation can also be achieved by directly operating the valve.

4.3.5 For each valve on the local control panel of each automatic water firefighting system, there shall be at least fault alarm (power failure alarm, valve position monitoring alarm), fire alarm system action indicator, alarm reset button, and local start. Fire system button and automatic/manual switch. Power failure alarms, valve position monitoring alarms, and fire alarm signals should all have significant differences.

4.3.6 The power supply for the local control panel is 220V single-phase 50Hz (connected to ground) provided by the tenderer, and each local control panel is equipped with an automatic charging battery (backup time is not less than 24 hours), provided by the bidder.

4.3.7 The local control panel receives the fire alarm system action signal and automatically starts the fire extinguishing in the automatic state. When the system adopts the manual control mode, after the fire detection system sends out the fire alarm signal, the operator must manually confirm and then manually start the fire extinguishing system. When the automatic fire extinguishing system is started, a signal indicating that the system has been started is returned to the fire alarm system.

4.4 A filter shall be provided on the fire pipe in front of each deluge valve, and a signal isolation valve shall be provided before and after the filter. When the valve is closed, an audible and visual alarm shall be provided on the local control panel to inform the operating personnel. Timely maintenance reset. The rain control valve shall have a pressure maintenance system on the control pipeline. When the pressure is suddenly restored after the fire pipe network loses pressure, the deluge valve will not open to cause misfiring. The above accessories are provided by the bidder.

4.5 Each wet alarm valve is preceded by a signal isolation valve. When the valve is closed, there is an audible and visual alarm on the local control panel to inform the operator to perform maintenance and reset in time. In addition, there should be a pressure maintenance system before (or after) the alarm valve. When the fire pipe network loses pressure, when the pressure suddenly recovers, the alarm valve will not open and cause misfiring.

4.6 Each end of the wet alarm valve shall be equipped with a water test device at the most unfavorable point. The water test device shall consist of a test valve, a pressure gauge, and a test water connection. The outlet flow coefficient of the test water connection shall be equal to the nozzle of the minimum flow coefficient of the system. .

4.7 The point of connection between the fire alarm system provided by the bid solicitor and the bidder supply system signal and cable is on the terminal row of the control valve provided by the bidder.

4.8 The working pressure of the automatic water fire protection system is 1.0 MPa, and the test pressure is 1.5 times the working pressure.

4.9 When the object of protection of the automatic water fire protection system is equipment and storage tanks, the layout of the system piping, nozzles, and hangers should fully consider the normal operation and maintenance conditions of the equipment. The brackets attached to the device should be removable. The design and layout of the pipe support and hanger should be reasonably firm to prevent the pipes and sprinklers from shaking during water spraying.

4.10 The outdoor automatic water fire protection system should take into account the winterization of antifreeze measures.

4.11 The selection and arrangement of nozzles for the water spray system shall cover the entire surface of the protective object and fully satisfy the design water spray strength required by Table 4-1.

4.12 The open screen sprinklers shall be used for the water curtain partitions at the entrances and exits of the coal handling bridges, and the water supply adapters shall be provided for the wet sprinkler system of the coal conveyor bridge and the water supply system of the water curtain system.

4.13 Hot water galvanized steel pipe inside and outside wall shall be used for the water distribution pipeline behind the automatic water fire control valve group. Pipes with a diameter equal to or greater than 100 mm shall be connected in segments using flanged or grooved connection pieces. Pipes with a diameter of less than 100 mm shall be used. Screw connection.

Main Building Automatic Alarm System Detection Method Selection List

No. Building/Region Area

Monitoring type Control method Extinguishing system

Type Flammable Description

Name Fire degree

A centralized control building

1 unit control room Smoke, temperature automatic alarm, automatic fire extinguishing or manual fire after manual confirmation IG-541

Fire Systems Cables and General Fuels

2 Engineer station Smoke, temperature automatic alarm, automatic fire extinguishing or manual fire after manual confirmation IG-541