Operating unit for automatic installation of powder fire extinguishing and fire alarm rooms

Contents

Contents

1. GENERAL PART

2. CHARACTERISTICS OF PROTECTED PREMISES

3. PURPOSE AND PRINCIPLE OF OPERATION OF AUTOMATIC INSTALLATION OF POWDER FIRE EXTINGUISHING AND FIRE ALARM

4. CALCULATION OF POWDER FIRE EXTINGUISHING PULSE UNIT BY AREA

5. INSTALLATION OF WIRING FOR AUTOMATIC POWDER FIRE EXTINGUISHING AND FIRE ALARM UNIT

6. EQUIPMENT LOCATION

7. POWER SUPPLY

8. GROUNDING

9. HEALTH AND SAFETY MEASURES

10. PROFESSIONAL AND QUALIFICATION OF PERSONS WORKING AT THE FACILITY FOR MAINTENANCE AND OPERATION OF AUTOMATIC POWDER FIRE EXTINGUISHING AND FIRE ALARM UNIT

11. MAINTENANCE AND MAINTENANCE OF FIRE AUTOMATION UNITS

Task

for power supply design of automatic powder fire extinguishing unit

Technical characteristics of electrical receivers of the plant:

1. Power supply unit category and number of inputs: - 1 category, two inputs.

2. Current genus:

at operating input - variable, frequency: - 50 Hz;

at reserve input - permanent.

3. Voltage:

at operating input - 220 V;

at standby input - 12 V - is provided by accumulators built into "URSCP (bp)" and "RIP12" UPS.

allowable voltage deviation ± 10%.

4. Installed power:

at operating input - 0.5 kW;

at reserve input - 36 W

Adaniye

for protective grounding (tapping) of automatic installation of powder fire extinguishing

All metal parts of electrical equipment that are not normally energized, but which may be under it, due to failure of insulation, are subject to grounding (earthing).

Resistance of protective grounding must be not more than 4.0 Ohm.

Grounding (grounding) must be performed in accordance with the "Electrical Installation Rules" (PUE), technical documentation of manufacturers of component devices.

Adaniye

for disconnection of exhaust and plenum ventilation

Disconnect exhaust and plenum ventilation at fire alarm actuation of powder fire extinguishing system from relay R1 (contacts 29, 30, 31) of PCCP of URSCP (bp).

Load characteristic of relay output contacts at U = 220 V is not more than I = 5 A.

Adaniye

to send a fire signal to the centralized monitoring panel

(separate building in the warehouse complex).

Transmit the fire signal to the centralized monitoring panel when the fire alarm of the powder fire extinguishing system is triggered from contacts 3, 4 of the "URSCP (bp)" PPKPU receiver and control device.

Characteristics of "URSCP (bp)" PPKPU output signals to PCP:

"norm" - diode;

"failure" - resistance not less than 100 kOhm;

"alarm" - resistance 11 kOhm (5%) + diode.

1 General part

The project of automatic installation of powder fire extinguishing and fire alarm for protection of the warehouse building premises located at the address: Moscow Region, was carried out in accordance with the agreement for the development of the working design, the terms of reference and the initial data received from the Customer. The initial data for the design were floor plans presented by the Owner. The following regulatory documents are used in the development of the project:

NPB 11003 "List of buildings, structures, premises and equipment to be protected by automatic fire extinguishing and detection units";

SNiP 110195. The instruction about an order of development, coordination, a statement and structure of the project documentation on construction of the enterprises, buildings and constructions;

NPB 882001. Fire fighting and alarm systems. Design Rules and Regulations;

SNiP 2.08.0289 "Public buildings and structures";

GOST 12.3.04691. Fire extinguishing units are automatic. General technical requirements.

PUE-98. Electrical Installation Rules;

Fire safety rules in the Russian Federation. M.: Infram M., 1994;

RD 0090196 Fire Automation Units. Technical Content Rules;

RD 78.14593 Guidelines. Systems and complexes of security, fire and fire alarm. Rules for production and acceptance of works.

Specifications, certificates of conformity and fire safety for the equipment used.

Characteristics of protected premises

Storage building premises shall be protected.

The walls of the building are reinforced concrete, brick partitions, reinforced concrete floors. The area of the premises protected by the automatic installation of powder fire extinguishing and fire alarm is about 10,000 m2. Height of protected rooms - up to 12 m.

Heating is central. Operating temperature limits from + 5 ° С to + 30 ° С.

Relative humidity up to 70% at 20 ° C.

Dust, smoke, vibration, aggressive media and significant electromagnetic interference are absent.

In order to increase the level of fire protection of premises and tighten possible combustion centers at the facility, manual fire extinguishing devices are used.

Protected rooms of the painting area according to NPB 10595 GPS of the Ministry of Internal Affairs of the Russian Federation belong to category "A" by fire hazard .

Installation of electrical wiring for automatic unit of powder fire extinguishing and fire alarm

Automatic fire alarm loops are made by wires and cables with copper cores with a section corresponding to the specifications for detectors IP2123SU, IP103-3-A2-1M and IPR. Fire alarm loops in protected rooms and along routes shall be laid separately from all power cables, lighting cables and wires. In case of parallel open laying, the distance between the wires and cables of fire alarm loops and connecting lines with power and lighting wires shall be at least 0.5 m. If it is necessary to lay these wires and cables at a distance of less than 0.5 m from power and lighting wires, they shall be protected from aiming. It is allowed to reduce the distance to 0.25 m from wires and cables of APS loops and connecting lines without protection from aiming to single lighting wires and control cables.

Alarm loops with "Spectron101N" flame detector are laid by wire of "twisted steam in screen" type in PVC pipeline.

Loops of the automatic fire alarm in the room and on routes are laid by KSPV 2h0.5 wire in PVHtruboprovod, during descent of wires - it is allowed to tame fire announcers in a decorative box of PVC.

WFP start-up loops (p) in the room and along the routes are laid by 2x1.5 and 2x2.5 VVP in PVC pipeline.

The loop of sound annunciators in the rooms and along the routes is laid by the 2x0.75 VVP wire in the PVC pipeline.

The distance from cables and insulated wires laid open, directly along the building structures of the room to the places of open storage (placement) of combustible materials shall be at least 0.6 m. At the intersection of wires and cables with pipelines, the distance between them in the light shall be at least 50 mm. When laying in parallel, the distance from the wires to the pipelines shall not be less than 10 mm.

The 220B power cable is laid separately from the low-current circuits in the steel water and gas pipe.

Equipment placement

Placement and installation of automatic fire detectors shall be carried out in accordance with the design, requirements of NPB 882001, process charts and instructions.

The control devices of the working section of URSCP (bp) are located in groups of 2-5 pcs in the protected room, the device for receiving and monitoring the security and fire protection of the PPKOP "ArkV24" and the backup power supply unit of the BRP are located in the duty room, where the duty personnel are constantly located. Devices are attached to the wall at a height convenient for maintenance, but not less than 0.8 m from the floor level .

Manual fire detectors are installed on the wall and structures of the building at the exits of the room at a height of 1.5 m from the floor.

Placement of instruments shall prevent their accidental fall or movement along the installation surface, in which the connected wires and cables may be damaged.

When placing instruments it is necessary to ensure normal illumination of instrument panels.

Do not install devices closer than 1 m from heating system components. Measures should be taken to protect devices from direct sunlight.

Power supply

According to PUE, powder fire extinguishing and fire alarm installations in terms of ensuring the reliability of power supply are classified as electrical receivers of the 1st category. Therefore, the power supply of the plants should be carried out from two independent AC sources with a voltage of 220 V, a frequency of 50 Hz, at least 0.5 KW each, or from one AC source with automatic switching in emergency mode to backup power from the batteries.

If it is impossible to power the electric receivers from two independent sources according to local conditions, it is allowed, in agreement with the customer, to supply them from one source: from different transformers of two-transformer or from two nearby substations connected to different supply lines, with an ALT device. When the battery is used as a backup power source, the plant shall be operated for at least 24 hours in standby mode and for at least 3 hours in fire mode.

Grounding

To ensure the safety of people, all electrical equipment of fire alarm units must be reliably grounded in accordance with PUE requirements. Installation of grounding devices shall be carried out in accordance with the requirements of "Instructions for implementation of the grounding network in electrical installations" - MN 10276. The resistance of the grounding device used to ground the electrical equipment shall not exceed 4 ohms.

Water pipelines laid in the ground, metal structures of the building, which are in contact with the ground, lead shells of cables laid in the ground can be used as natural grounding elements. In the circuit of grounding and zero protective conductors there shall be no disconnecting devices and fuses. Grounding conductors are laid directly along the walls. The grounding conductors shall be laid at the points of passage through the wall and shall be covered, as a rule, with their direct sealing. Conductors shall not have connections or branches at these locations.

Connection of grounding and zero protective conductors to parts of electrical equipment shall be made by welding or bolting.