The boiler automation project contains working drawings of thermal control, protection of steam boiler E1/9 operating on diesel fuel.

Automation and instrumentation and a.

This boiler automation project contains detailed drawings of thermal control and protection of steam boiler E1/9 operating on diesel fuel.

5.1. Thermal Mechanical Control

Thermal and mechanical monitoring devices are adopted in accordance with the following principles:

a) Parameters, which are necessary for proper operation of the process and pre-start operations, shall be measured by indicating instruments;

b) parameters, change of which can lead to equipment emergency condition, are monitored by signalling devices.

For boilers the following indicating instruments are provided:

- fuel pressure in the reverse line of the burner;

- steam pressure in the boiler (complete with the boiler);

- temperature and pressure of feedwater at the boiler inlet;

- water level in the boiler upper drum;

- discharges in boiler furnace;

- temperature and composition of combustion products (for adjustment).

5.2. Process Protection and Alarm

The E1/9 boiler provides automatic safety to cut off the fuel supply to the boilers when the following limit parameters are reached:

- Steam pressure increase in the boiler max 8 kgf/cm2

- Burner flare failure

- Decrease of discharge in boiler furnace max -5 Pa

- Level deviation in the upper drum of the NPL boiler

WOW

- Room gas content of boiler room with carbon monoxide 100 mg/m3

- Faults of protection circuits, including voltage loss

Gas cut-off is accompanied by sound and light alarm on the boiler automation board.

Limit values of parameter cutoff shall be specified during commissioning by a specialized organization licensed for this type of work.

5.3. Power supply

Automatic power supply is carried out from the distribution power system ~ 220/380 V .