2.4 Fire-prevention requirements.

All materials, structural steelwork and building as a whole shall comply with requirements of fire-resistance and shall be executed in full correspondence with rates and standards acting on the territory of the Republic of Kazakhstan.

The building`s fire-resistance degree is II.

Lagging of enclosing structures shall be fire-proof or slow-burning.

The finishing and painting of premises with combustible materials is not allowed.

2.5 Foundations.

The foundations are supposedly continuous, on natural base.

2.6 Color treatment of elevations

The elevation of the building shall be painted in white color. On perimeter of the building on height of 2.7m with respect to mark 0.000 the blue colored stripe 0.5m wide passes. The visor on entry is of a triangular form and is of blue color.

3 Requirements to internal premises

3.1 Heating, ventilation and air conditioning

3.1.1 Rated parameters for design:

Rated outside temperatures:

• Summer period – plus 42˚C;

• Winter period - minus 32˚C;

Rated inside temperatures:

• Summer period – plus 30˚C;

• Winter period - plus 5˚C;

When rating the air change, the heat gains from equipment, lighting and solar radiation, are to be assumed.

All HVAC equipment shall provide twenty-four-hour, year-round work.

3.1.2 HVAC systems shall provide a positive pressure 25 Pa, in relation to external conditions to prevent the ingress of dusts, sand and corrosive gases from external sources. The positive pressure will be controlled by a spring operated relief damper. General air intake ductwork shall be equipped by galvanized steel grille with weather protecting louvers with sand traps, located at the height not lower than 3 m in reference to curb level and in fireproof area.

3.1.3 HVAC system design shall provide split 100% (main and reserve) HVAC units, providing handling of fixed volume of fresh and return air in line with required load in the room. Air handling units shall consist of gas shut off damper with motor, fan, electric heater, primary filter, strainers (of Purafil system) for filtration of air from hydrogen sulfide H2S, hydrocarbons and smoke fumes. The filtration quality of fresh intake air shall be a minimum of G1 class as defined in ISA S71.04-1985 standard. Each fan`s outlet shall be provided with return valves.

3.1.4 HVAC shall be designed in such way that the minimum required noise level would not exceed 80dB when all HVAC equipment runs.

3.1.5 As a refrigerant coolant the R410A freon shall be used.

3.1.6 Internal ventilation ducts shall be manufactured from pre-galvanized ductworks. All external ductwork shall be manufactured from stainless steel.

TABLE OF HEAT FLOW RATES

Name of the premise	Consumption of heat on heating kWh	Cold consumption for conditioning kWh
RU - 6 kv	4.39	4.821

3.1.7 Automation of HVAC systems:

• Reserve equipment`s switching on at the shutdown of operating equipment.

• Equipment`s switching off in case of fire.

• If the pressure differential falls below 25 Pa, to provide reserve air handling unit`s switching on.

• To execute pressure drop control in filters.

• To provide temperature control in room.

• To install gas analyzer in air intake ductwork and in case of detecting H2S, hydrocarbons and smoke fumes to provide light and audio alarm, shutting of gas shut-off damper, fans and electric heaters switching off.

• Start installing of the HVAC system (manually on reception of the signal).

• Common emergency-preventive alarm about any fault relayed to the HVAC system control panel.

• Condition (working efficiency) of the HVAC system.

• It is necessary to provide the local control of the HVAC`s operation.