Software for calculating the secondary circuit's pH value of PWR basified with ammonia

In the secondary circuit of pressurized water reactor (PWR), the pH value of secondary circuit including steam generator water, feedwater and condensate is generally measured after the temperature decreases to 25 degrees Celsius. The pH value measured in this way may deviate from the one at the actual operating temperature. The appropriate pH value can reduce or even avoid corrosion in feedwater and condensate system and steam generator as well as scaling in steam generator. The pH value at the actual operating temperature can be calculated through the software entitled 'Software for Calculating the Secondary Circuit's pH value of PWR Basified with Ammonia'. Only the concentration of ammonia, ionization equilibrium constants of ammonia, water, acetic acid, carbonic acid etc. at a certain temperature such as 300 degrees Celsius are required. Therefore, this software for calculating the pH value is very instructive for monitoring the operation of the secondary circuit of PWR. (author)