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How Does Foamed Acid (U.S. Patent# 6,517,617 ) MIC-Guard™ AF Work in FPS?

MIC-Guard™ treated pipe, should always be used when tubercle and scale formation is severe. However, when tubercle and scale deposits are manageable, we suggest treatment with our Patent Pending Foamed Acid System, MIC-Guard™ AF. MIC-Guard™ AF uses only food-grade chemicals and (unlike other cleanup systems offered in the FPS industry) the percentage cleanup of acid-soluble tubercles and scale deposits can be calculated. As a result, there is no guesswork as to when the FPS is cleaned of acid soluble deposits to the fullest possible extent.

Our Foamed Acid System is applied by the same equipment used to apply MIC-Guard™. The foam behaves according to Boyle's Gas Law:

PVT =PVT. Pressure/volume calculations can determined when the tubercle and scale deposits are dissolved and the reaction is complete. The foamed acid will not react with any pipe or fitting compositions.

(To see a larger diagram please click on the images.)

First, the FPS is drained and all valving is closed to begin the cleaning. Foamed Acid is then introduced into the fire sprinkler system by removing one of the sprinkler heads and attaching the Foamed Acid line. The foamed acid is introduced and pumped until a certain pressure is achieved. The whole system is exposed to the acid at that time, as the foam will adsorb all entrapped water and air.

When the foamed acid is spent and loaded with reactant by-products, the reaction reaches a point where there is little pressure decrease. By monitoring a pressure gauge, we determine when that load of foamed acid has reacted to its potential. When the pressure drop stops completely, the spent foamed acid is discharged through the main drain. The residual liquid is neutralized with sodium bicarbonate to a pH of 6.8 to 7.2 and disposed of according to local, state and federal laws.

New foamed acid is introduced and the system is “recharged” with fresh acid. Again, the system is pressurized. When the pressure drops and is stabilized, the spent foamed acid is removed and neutralized for disposal. This process is continued until there is nothing left to dissolve.

Foamed acid is introduced one final time at a pre-determined pressure. Volume of acid is recorded and PVT values are recorded.

Using PVT values from the beginning of treatment, the increase in system volume can be

calculated.



Evaluation Cleaning Coating Maintenance System Summation Environment MIC Links MIC Testing Privacy Policy Water Testing Foaming unit Central heating systems City water heating lines SRB APB IRB SLYM HAB Technical Specifications Film plugged esfr / aerosol Film endoscoop dry system	How Does Foamed Acid (U.S. Patent# 6,517,617 ) MIC-Guard™ AF Work in FPS? MIC-Guard™ treated pipe, should always be used when tubercle and scale formation is severe. However, when tubercle and scale deposits are manageable, we suggest treatment with our Patent Pending Foamed Acid System, MIC-Guard™ AF. MIC-Guard™ AF uses only food-grade chemicals and (unlike other cleanup systems offered in the FPS industry) the percentage cleanup of acid-soluble tubercles and scale deposits can be calculated. As a result, there is no guesswork as to when the FPS is cleaned of acid soluble deposits to the fullest possible extent. Our Foamed Acid System is applied by the same equipment used to apply MIC-Guard™. The foam behaves according to Boyle's Gas Law: PVT =PVT. Pressure/volume calculations can determined when the tubercle and scale deposits are dissolved and the reaction is complete. The foamed acid will not react with any pipe or fitting compositions. (To see a larger diagram please click on the images.) First, the FPS is drained and all valving is closed to begin the cleaning. Foamed Acid is then introduced into the fire sprinkler system by removing one of the sprinkler heads and attaching the Foamed Acid line. The foamed acid is introduced and pumped until a certain pressure is achieved. The whole system is exposed to the acid at that time, as the foam will adsorb all entrapped water and air. When the foamed acid is spent and loaded with reactant by-products, the reaction reaches a point where there is little pressure decrease. By monitoring a pressure gauge, we determine when that load of foamed acid has reacted to its potential. When the pressure drop stops completely, the spent foamed acid is discharged through the main drain. The residual liquid is neutralized with sodium bicarbonate to a pH of 6.8 to 7.2 and disposed of according to local, state and federal laws. New foamed acid is introduced and the system is “recharged” with fresh acid. Again, the system is pressurized. When the pressure drops and is stabilized, the spent foamed acid is removed and neutralized for disposal. This process is continued until there is nothing left to dissolve. Foamed acid is introduced one final time at a pre-determined pressure. Volume of acid is recorded and PVT values are recorded. Using PVT values from the beginning of treatment, the increase in system volume can be calculated.
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