Oil product warehouses

Contents

1. FIRE DETECTION AND AUTOMATIC FIRE ALARM SYSTEMS

1.1. General Information

1.2. Solutions for fire detection and automatic fire alarm system

1.3. Selection and placement of the instrument

1.4. Data lines

1.5. Selection and placement of automatic fire detectors

1.6. Fire warning system

1.7. Power supply of fire alarm devices

2. FIRE FIGHTING SYSTEM CONTROL

2.1. Power supply

2.2. Operation of fire fighting systems equipment

3. CABLE LINES AND WIRING

4. PROTECTIVE GROUNDING AND DAMPING OF FIRE PROTECTION SYSTEMS

General Information

Fire Detection System and Automatic Fire Alarm System are provided at the facility.

The fire detection system on the drain rack and tank farm is provided to start the automatic fire extinguishing system.

The automatic fire alarm system (APS) is provided in buildings and sites for fire detection in the initial stage of its development and transmission of fire alarms to PSK.

Solutions for fire detection and automatic fire alarm system

For fire detection system, flame detectors shall be installed on the rack. Detectors shall be installed on existing steel structures with the expectation that each point of the room shall be protected by at least two detectors. Thermal explosion-proof detectors are installed on the tanks.

The primary objective of the fire detection system is to:

- early detection of fire;

- actuation of light and sound alarm to alert personnel about danger.

The equipment of the fire detection and automatic fire alarm system includes:

- automatic fire detectors designed for fire detection. Depending on the purpose of the protected object and its category, the corresponding type of detectors is provided;

- manual detectors - activated to alert the duty operator and personnel of the facility in case of fire detection or other emergency situations;

- light and sound fire annunciators installed in rooms with permanent presence of duty and maintenance personnel, as well as in the territory, are switched on in case of fire.

Selection and placement of the instrument

For fire protection of the facility, the working design provides for a fire alarm and fire extinguishing control (PAS) device installed in the room.

As a PPK, a device of the "SINCRO" brand was adopted, which allows providing an address fire alarm system. It has 2 ring loops with 127 addresses, 48 zones, a built-in printer, 24V power supply, 4.0A, a steel housing, with installation on the wall.

The instrument has the ability to program and monitor the causal relationships of equipment operation. The built-in database allows you to test and analyze the state of individual components of the hardware complex, in case of failure of any of the components, the operation of the entire system is not disturbed.

The instrument performs the following functions:

- collection of information from fire detectors ;

- monitoring of detectors operability;

- control of fire alarm loops integrity;

- output of control signals for fire extinguishing systems start-up;

- monitoring of fire-fighting system equipment condition (pump condition, gate valve position, control mode, etc.);

displaying system status information on a liquid crystal display built into the device body;

- processing of information (activation of annunciators, display of events on the device display).

Data lines

Data links include fire alarm loops.

Fire detectors, address modules of I/O are connected to the loops of fire detection and automatic fire alarm systems (for switching on the warning devices and setting individual addressing to backward detectors). The fire alarm loop is circular, so when the loop breaks, the system continues to operate on two "half rings." The loop is made with a copper cable, the section of the strands is 1.5mm2.

Selection and placement of automatic fire detectors

Selection of type and number of fire detectors is made according to SNiP RK 2.02152003.

To protect the tanks, installation of explosion-proof thermal fire detectors of the FENWAL model along the perimeter of the upper part of the tank walls is provided. For tanks with a capacity of 5000 cubic meters in the amount of 6 pieces per each tank, for tanks with a capacity of less than 5000 cubic meters in the amount of 4 pieces per each tank.

The design provides for the installation of combined (UV/IR) explosion-proof flame detectors of model X3301 in the pump station and on the drain rack. Detectors shall be placed on steel structures so that each point is protected by at least two detectors.

In rooms with normal operating environment it is provided to install various types of automatic and manual fire alerts, address and address-free. To set individual addressing to non-address detectors, they are connected to the loop through CHQZ address modules. All modules of the fire alarm system are located in cabinets and boxes. Cabinets and boxes are installed on the territory and in buildings taking into account the lowest cable consumption. Fire detectors (smoke and heat) are located in the rooms in the upper current, taking into account the relief of the ceiling (according to SNiP RK 2.02152003). Manual detectors and fire extinguishing start buttons are installed on the walls, at a height of 1.5 m from the floor.

The following type of manual fire detectors is provided on the site:

BG2E - an explosion-proof manual fire detector is installed in the pump pump station and on the drain rack.

BG2W - all-weather design, in the territory of the tank farm.

Manual fire detectors are attached at a height of 1.5 m from the floor.

When the glass of the manual detector is broken, the signal "Fire" with indication of address is displayed on the PSK display.

Fire warning system

The working design provides for the use of the following types of fire alerts:

- DB3 - sound explosion-proof detector;

- XB11 - explosion-proof light detector;

- DB12 - Sound alert - up to 110 dB, for harsh production conditions;

- XB13 - fire light annunciator, 10 J, all-weather version IP66.

Fire alerts are activated automatically when fire detectors are triggered and activated by the operator. Fire alerts in the territory are installed on supports with a height of 3 m.

1.7.Electricity of fire alarm devices

Power supply to the power supply units of the fire alarm system is provided by the electrical part of the project.

Accumulators designed for continuous operation of the system during 24 hours in standby mode and 3 hours in "Alarm" mode are used as standby power supply source of PSK.

Fire Fighting System Management

2.1. Power supply

Fire fighting systems with regard to reliability of power supply belong to the first category and are provided with electricity from two independent, mutually redundant power sources. Power supply is performed by electrical department (AL grade). ALT is provided in the building of the fire fighting pump station. The location of the ALT device is centralized at the inputs of fire extinguishing systems. The electric receivers of fire extinguishing systems include: water supply pumps (1rab, 1rez.), "Jockey" pump, foam solution supply pumps (1rab, 1rez.), electrically controlled gate valves installed in the fire extinguishing pump station and in the territory, drain pump and compressor. ALT and other power equipment is taken into account by the EN brand and is installed in designed cabinets of SR.

2.2. Operation of fire fighting systems equipment

The following objects are protected by the automatic fire extinguishing system:

- tank farm (14 tanks);

- drain rack divided into four sections;

Fire cranes are installed in the boiler room, pod and car wash rooms to prevent local fires. The water supply pumps start buttons are installed in the fire cranes cabinets.

The design provides for the possibility of automatic, remote and local control of fire extinguishing systems.

Foam fire extinguishing system. Automatic start of foam extinguishing system is the main mode. In case of actuation of two automatic fire detectors on the protected object, the PSC processes the received information and, through the MIOU input/output modules, outputs a control signal to start the foam solution supply pumps and to open the corresponding fire electric valves in directions. At the same time as the pump is switched on and the electrical valves are opened, the electrical valve Z1 of the dosing system operating with the first PO tank is opened. When the lower level is reached in the first tank, the signal is transmitted from the software to close the electrical gate valve Z1 and open the electrical gate valve Z2 on the second tank with software. Upon completion of the foaming agent in the tanks with PA No. 1 and No. 2, the system issues a control signal for disconnection of the foaming agent supply pumps and closing of gate valves Z1, Z2. If the operating pump fails, the standby pump is automatically switched on. The control diagram of the pump units provides for the protection of pumps from "dry running" at the lower level in the tanks of the fire water reserve.

Remote start of the unit is carried out from the automatic cabinet SHA1, installed in the room under the heat. For remote fire extinguishing control, fire extinguishing start keys for objects are provided.

Local starting of the unit is carried out from the fire fighting pump station from the SHA2 cabinet. Control of object gate valves is performed from control buttons located at the location of electric gate valves.

Water fire extinguishing system. For water pumps, the automatic control mode is the main mode. The monitored parameter is the pressure in the pressure network downstream of the fire extinguishing pumps. The operating pressure in the network is maintained by the "Jockey" pump and pulse device. Operation of "Jockey" pump and main fire extinguishing pumps is interlocked so that during operation of main fire extinguishing pumps "Jockey" pump is disconnected. The main fire-fighting pump will be switched on only if the pressure in the network drops below the limit of the supporting pulse device and when a confirmation signal is received about the fire, from detectors, remote control switches or from buttons at fire cranes. The control diagram of the pump units provides for the protection of pumps from "dry running" at the lower level in the tanks of the fire water reserve. Valves for irrigation of tanks in case of fire are opened on site.

Actuation of the hose fire extinguishing system is performed remotely from buttons installed in the cabinets of fire cranes. When the button is pressed, the electric water supply valve opens, the pulse device and the "Jockey" pump provide the necessary pressure. In case of more water analysis, the working pump starts.

The design provides for monitoring of three levels in tanks of fire water reserve and two levels in tanks with software, as well as levels in the drain pit. The drain pump is controlled automatically at the upper and lower levels, the emergency level signals the flooding of the pump room.

The installed compressor, which is part of the pulse device, maintains the necessary pressure using the complete control equipment.

Control of fire pumps and electric valves is carried out through PSK and programmable Zelio relay, which is activated when the analog pressure sensor, fire detectors and remote fire control buttons are activated.

The Zelio Programmable Relay performs the following functions:

- continuous management;

- pump shutdown;

- cascade actuation of pumps (depending on water consumption);

- various adjustment algorithms;

- various functions of remote digital control.

SHA2 cabinet is installed in the room of the fire fighting pump station. I/O modules are installed in the board to remove signals about the state of the fire extinguishing system, about the state of electrically controlled gate valves (open/close/wedge), about the levels in the tanks of the fire fighting water reserve, about the levels in the tanks of the foam concentrate and the output of control signals for opening the corresponding electrically controlled gate valves and for starting fire extinguishing pumps .

The door of SHA2 cabinet provides:

- keys for selection of pump control modes;

- local pump control buttons;

- electric valves control buttons Z1, Z2;

- button of lamps testing;

- light alarm on operation and malfunction of pumps, on condition of electrically controlled gate valves Z1 and Z2 (open/closed/jamming), signal on automatic shutdown, on emergency levels in tanks of fire-fighting water reserve and tanks of foaming agent.

SHA1 cabinet is installed in the duty station room to monitor and control the fire extinguishing system. Inside the cabinet, I/O cards are installed to signal the status of fire extinguishing units.

The following are installed on the cabinet door:

- light alarm about fire at the facility, about loss of voltage at the pump station inlet, about pumps operation, about automatic shutdown, about condition of electric valves (open/closed), general signal about jamming of electric valves (decryption of signals on the PSK panel), about flooding of the pump station, about emergency levels in water tanks and software, about pressure decrease in the main diver; The light signal is accompanied by a sound alarm (except for the gate valve position signal);

- fire-fighting remote control keys, light-signalling lamp test button.

The design provides for output of signals for shutdown of process equipment in case of fire.

Cable lines and wiring

The selection of wires and cables for the fire extinguishing and fire alarm system was made in accordance with the requirements of the PUE and the technical documentation for the equipment (taking into account the redundancy of the connection cables).

Cables shall be laid in accordance with PUE. Control and signal cables have insulation from materials that do not propagate combustion and enclosure, which has increased thermal resistance

Cable laying is provided in trenches, in pipes, in the box by metal structures, inside the rooms the cables are laid in plastic cable channels, under the roadway is made together with CC communication cables.

Cable passes through walls and floors are made in steel pipe sections and in ducts. Entries into buildings are made in asbestos cement pipes through the foundation.

Protective grounding and grounding of fire protection systems

The project provides for the implementation of protective electrical safety measures in full provided for by the PUE.

The main means of protecting maintenance personnel against electric shock is protective grounding or grounding.

Protective grounding and connection of all fire alarm and fire extinguishing devices is performed in accordance with the requirements of PUE and technical documentation for the equipment.