日本システム企画 List of Products and Services

The Holiday Inn London, Heathrow is one of the largest hotels in the UK, consisting of 617 rooms, and was built in the 1970s near Heathrow International Airport. The hotel faced serious leakage issues throughout its air conditioning piping due to extensive red rust corrosion, which caused numerous holes in the pipes and resulted in water damage to guest rooms and hallways. To address this, a rust prevention longevity device called the "NMR Pipe Protector" was installed on February 12, 2008. Seven days after the installation of the NMR Pipe Protector, the iron content in the chilled water of the air conditioning system, which was 0.669 mg/l before installation, significantly decreased to 0.017 mg/l, confirming the rust prevention effect of the NMR Pipe Protector. One year after installation, the iron content in the chilled water dropped to nearly zero at 0.007 mg/l, completely eliminating new leaks, and the red rust in the air conditioning piping transformed to almost 100% black rust, proving that the piping could be extended in lifespan until the building's end of life.

• Water Treatment

At Hotel #M, 21 years after its construction, the galvanized steel pipes (SGP) for the air conditioning chilled and hot water system were experiencing significant red rust deterioration, with a risk of leakage at the pipe joints. Therefore, a red rust prevention pipe longevity device called the "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a water sample was taken from the circulating air conditioning chilled and hot water within the hotel’s piping. The water was brown in color due to red rust inside the pipes, and the total iron content in the water was found to be 28 mg/l, indicating severe red rust corrosion within the pipes. Two weeks after the installation of the NMR Pipe Protector, another water sample was taken under the same conditions, and the water color had become slightly transparent, with the total iron content reduced significantly to 4.0 mg/l. Six weeks after installation, the water sample showed that the water was almost transparent, and the total iron content further decreased to 1.6 mg/l. It was proven that the progression of red rust within the pipes had completely stopped, and the existing red rust had transformed into an inert black rust that does not dissolve in water, with a volume reduced to one-tenth. At Hotel #M, it has been verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled and hot water pipes will change to black rust, and the cost will be less than one-fifth of the pipe replacement work, allowing the pipes to be extended for the lifespan of the building. Naturally, leakage has been completely prevented thereafter.

• Water Treatment

At Hotel #T, when it was 29 years old, the deterioration of red rust in the air conditioning chilled and hot water piping made of galvanized steel (SGP) was very advanced, and leakage was occurring at the joints. Therefore, a red rust prevention piping longevity device called "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a sample of the chilled and hot water circulating in the piping was taken, revealing that the water was brownish due to red rust in the pipes, with a total iron content of 29 mg/l, indicating significant red rust corrosion. Two weeks after the installation of the NMR Pipe Protector, a water sample taken under the same conditions showed that the water was clear, and the total iron content had significantly decreased to 0.2 mg/l. Additionally, a water sample taken under the same conditions four weeks after installation also showed a total iron content of 0.2 mg/l, confirming that red rust deterioration had been completely prevented, and the red rust in the piping had transformed into black rust, which is insoluble in water and occupies one-tenth of the volume. At Hotel #T, it has been verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled and hot water piping will change to black rust, allowing the piping to be extended to the lifespan of the building at a cost of less than one-fifth of the piping replacement work. Naturally, leakage has been completely prevented thereafter.

• Water Treatment

This property is 14 years old, and there has been significant red rust blockage at the joints of the dissimilar metal connections in the hot water supply pipes. To prevent future piping rehabilitation and renewal work, we adopted the "NMR Pipe Protector," which costs less than one-tenth of that, before the red rust blockage progressed any further. When measuring the red rust blockage rate at the first joint of the hot water supply piping for the circulation pump, it was 12.4% before the installation of our product, but it decreased to 5.3% four months after installation, a reduction of 57.3%. 【Introduction Overview】 ■ Building Name: GSK Building ■ Location: Shibuya, Tokyo ■ Building Overview: 14 years old, office building ■ Water Supply Method: Circulating hot water supply method ■ Installation Date: September 22, 2003 ■ Installed Piping/Number of Units: Hot water supply piping on the secondary side of the storage tank (HTLP 65mm)/PT-75DS×1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At that time, the facility had been in operation for 42 years, and there were significant concerns about the corrosion of the hot water supply pipes, which led to the adoption of the "NMR Pipe Protector." Before the installation of this product, the amount of black rust in the pipes was 0.9%, but after 6 months of actual operation post-installation, it increased to 16.9%, representing a relative increase of 1877.7%. The reduction of red rust to magnetite (black rust) has been proven. In the future, if all the red rust turns into black rust, the piping will not need to be replaced as long as external corrosion does not occur. 【Introduction Overview】 ■ Location: Shibuya, Tokyo ■ Building Overview: 42 years old, 9-story office building ■ Installation Date: January 27, 2016 ■ Installed Piping: Cooling water pump primary side hot water supply piping (SGP pipe 200mm) ■ Number of Installations: PT-200DS × 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

This property has been in existence for 37 years, and due to the use of SGP (galvanized steel pipes) in the water supply pipes, there has been an occurrence of red water. Furthermore, updating the piping requires a huge cost, and the necessary water outage work during the pipe renewal could not be carried out due to business operations within the building, making it impossible to repair the piping. Therefore, we adopted the "NMR Pipe Protector," which prevents the occurrence of red rust in the pipes by converting it to black rust without allowing red rust to flow out, thereby extending the life of the piping. Two months after installation, the complete leaching of red rust stopped, and three months after installation, an analysis of the black rust mass in the piping revealed that 63.5% of black rust was confirmed. [Introduction Overview] - Before installation: The iron ion concentration in the water inside the pipes was 2.2 mg/l, with a color degree of 50. - Effects after installation: - Two months after installation, the complete leaching of red rust stopped. - Three months after installation, an analysis of the black rust mass in the piping confirmed 63.5% black rust. - Even after 20 years, the water supply piping continues to be used without any red rust issues. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

This property has been in existence for 50 years and has experienced red rust corrosion deterioration due to the use of galvanized steel pipes (SGP). Before the installation of the "NMR Pipe Protector," the color of the water in the pipes was light brown, and the total iron content in the water was 11 mg/l, indicating significant red rust corrosion. One week after the installation of the product, the color of the water became almost transparent, and the total iron content in the water was significantly reduced to less than 0.1 mg/l. A similar verification conducted 10 months after installation showed that the good condition was maintained. [Introduction Overview] ■ Issues - There was red rust corrosion deterioration due to the use of galvanized steel pipes (SGP). - The total iron content in the water was 11 mg/l, indicating significant red rust corrosion. ■ Effects after Installation - The total iron content in the water was significantly reduced to less than 0.1 mg/l. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

The heat source equipment of the Imperial Theatre uses steam boilers and turbo chillers, and since the theatre dislikes noise, the heat source is installed six floors underground. Additionally, most of the piping is located within concrete, making pipe renewal work extremely difficult. To improve the current situation, where significant deterioration due to red rust in the piping has progressed after 34 years since its construction in 2000, the "NMR Pipe Protector" was installed to convert red rust into black rust and rehabilitate the piping. As of 2021, 21 years later, all issues related to red rust in the piping have been resolved, and there is almost no iron content from red rust in the circulating air conditioning chilled and hot water. Since the installation of this product, there has not been a single instance of leakage, and the piping condition has been maintained in extremely good shape. [Effects After Installation] - All issues related to red rust in the piping that existed 21 years ago have been resolved. - There is almost no iron content from red rust in the circulating air conditioning chilled and hot water. - There has not been a single instance of leakage, and the piping condition has been maintained in extremely good shape. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

The air conditioning chilled and hot water piping installed throughout the famous bookstore building in Shinjuku was at risk of deterioration due to red rust. In 2005, 41 years after its construction, a "NMR Pipe Protector" was installed on the 200A diameter piping before the heat source pump to prevent the deterioration of red rust inside the piping and convert it to black rust, thereby extending the piping's lifespan to match that of the building. In April 2007, 19 months after installation, the branch pipe with a diameter of 32A from the air conditioning chilled and hot water piping was removed to check the state of red rust inside the piping, and it was found that all the red rust had been converted to black rust. [Introduction Overview] ■ Location: Shinjuku, Tokyo ■ Year of Completion: 1964 ■ Piping Material: Galvanized Steel Pipe ■ Air Conditioning Method: Central System (Hot Water Piping) ■ Installation Work: 2005 *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

The hot water supply piping in this office building uses galvanized steel pipes (SGP pipes) as the piping material, and serious red water due to corrosion deterioration occurred throughout the building. According to water quality tests, the iron content in the hot water supply in the early morning was high at 5.2 mg/l, so a "NMR Pipe Protector" was installed to prevent red rust and extend the life of the hot water supply piping. In the water quality test conducted nine days after installation, the iron content dramatically decreased to 0.5 mg/l, and even 43 days after installation, the iron content remained low at 0.5 mg/l. [Effects After Installation] ■ The water quality test nine days after installation showed a dramatic decrease in iron content to 0.5 mg/l. ■ Even in the water quality test 43 days after installation, the iron content remained low at 0.5 mg/l. ■ The leaching of red rust into the water stopped, proving the rehabilitation of the piping through the black rust formation. ■ By preventing external corrosion, the piping became usable as long as the building remains standing. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Harrods department store, galvanized steel pipes were used for the hot water supply system, and after 30 years, red water had occurred. To eliminate the red water from the hot water supply and to prevent the need for pipe replacement, an "NMR Pipe Protector" was installed on the primary side of the hot water header. The iron concentration in the stagnant water at night, which was 1.294 mg/l before installation, decreased to 0.058 mg/l 47 days after installation, and further dropped to 0.022 mg/l 67 days after installation, reducing to 1/58 of the initial value. [Effects After Installation] - The iron concentration in stagnant water at night decreased from 1.294 mg/l to 0.058 mg/l 47 days after installation. - 67 days after installation, the iron concentration further decreased to 0.022 mg/l, reducing to 1/58 of the initial value. - The deterioration caused by red rust from the inside has been completely eliminated. - By preventing external corrosion, it has become usable for semi-permanent duration as long as the building remains. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

At that time, the facility had been in operation for 43 years, and there were significant concerns about the corrosion of the cooling water piping. As a countermeasure, we adopted the "NMR Pipe Protector." Before the installation of this product, the amount of black rust in the rust was 2.0%, but after 10 months of installation, it increased to 48.2%, which is a relative increase of 2410%. The prevention of red rust progression and the rehabilitation of the piping due to black rust have been demonstrated. In the future, if all the red rust in the rust turns into black rust, this piping will not require replacement as long as external corrosion does not occur. [Introduction Overview] ■ Location: Sapporo City, Hokkaido ■ Building Overview: 43 years old, 3 basement floors, 10 above-ground floors, commercial facility ■ Installation Date: February 4, 2019 ■ Installed Piping: CT-5 system cooling tower secondary side cooling water piping (SGP pipe 200mm) ■ Number of Installations: PT-200DS × 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

In a food processing factory that is 11 years old, a large amount of chlorine was used to suppress the growth of slime caused by bacteria in the cooling tower. To reduce the amount of chlorine being used, an "NMR Pipe Protector" was installed. Even with the chlorine dosage reduced to one-third, the growth of algae in the cooling tower could still be suppressed. Additionally, the number of general bacteria (microorganisms) decreased from 640 to 270, and the color value, which increases due to organic matter contamination, was significantly reduced from 8 degrees to 3 degrees, within the water quality standard. 【Introduction Overview】 ■ Location: Shizuoka Prefecture ■ Building Overview: 11 years old, factory ■ Water Supply Method: Pump pressurization method ■ Installation Date: October 30, 1998 ■ Installed Piping/Number of Installations: Well water pump primary side (HI-VP 40mm)/PT-50DS x 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

In August 1998, an "NMR Pipe Protector" was installed in the cooling water circulation piping of the welding robot cooling line located within a major automobile manufacturer's factory in Fukuoka Prefecture to prevent red rust scale. Before installation, red rust from the cooling water piping would leach out, entering the narrow cooling tubes of the body welding robots, causing blockages that resulted in the welding robots stopping, which took over 15 minutes to recover. Nine months after installation, the cooling water piping was inspected, and compared to the amount of black rust in the red rust before installation, it significantly increased from 4% to 43.6%. Additionally, line stoppages were completely prevented. [Challenges] - Red rust leaching from the internal cooling water piping - Entry into the narrow cooling tubes of the body welding robots, causing blockages - Recovery from welding robot stoppages taking over 15 minutes - Damage costs exceeding 6 million yen per incident *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

The university's air conditioning hot water piping has been troubled by internal red rust issues. Although a sacrificial anode was introduced in 2008 as a countermeasure, the progression of red rust did not stop. Additionally, a rust inhibitor was administered once a year, but there was no change in the iron content in the water before and after the use of the rust inhibitor, raising concerns about its effects on human health. Therefore, to remove red rust and single-celled bacteria while maintaining the strength of the piping, an "NMR Pipe Protector PT-75DS" was installed in the air conditioning hot water piping (return pipe) of the Todd Building on campus. The iron content in the water, which was 43.81 mg/l before installation, decreased to 17.95 mg/l three weeks after installation. [Issues] ■ The progression of red rust did not stop despite the introduction of a sacrificial anode. ■ Although a rust inhibitor was administered once a year, there was no change in the iron content in the water before and after its use, and concerns were raised about its effects on human health. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

In this property, galvanized steel pipes (SGP) are used for the water supply piping, and at 35 years old, it was diagnosed that the pipe's lifespan was only 2 months due to frequent leaks and the occurrence of red water. To prevent red rust and extend the life of the piping, an "NMR Pipe Protector" was installed. Before installation, water quality tests showed an iron content of 0.5 mg/l and the presence of dark red water, but six days after installation, the iron content dropped to below 0.05 mg/l and the red water was completely eliminated. Subsequently, water quality tests conducted 14 and 20 years after installation showed that red rust had completely disappeared, and new leaks were entirely prevented, proving the rehabilitation of the piping. [Effects After Installation] ■ Water quality tests six days after installation showed iron content below 0.05 mg/l and complete elimination of red water. ■ Water quality tests 14 and 20 years after installation showed that red rust had completely disappeared. ■ New leaks were entirely prevented, proving the rehabilitation of the piping. ■ Piping with a statutory useful life of 15 years was extended by 40 years, maintaining a condition free from red rust deterioration until 55 years of age. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Whittington Hospital, galvanized steel pipes (SGP) had been used for hot water supply piping for over 30 years, resulting in the daily occurrence of dark red water and concerns about leaks. Before the installation of the "NMR Pipe Protector," the iron content in the hot water was very high at 7.33 mg/l, and the deterioration of red rust in the pipes was significantly advanced. However, after 19 days of installation, the iron content in the hot water decreased to 0.388 mg/l. After 29 days of installation, it further reduced to 0.077 mg/l, which is 1/100 of the initial value, completely preventing the deterioration of red rust. It was proven that the red rust in the pipes transformed into insoluble and passive black rust in a volume of water that is 1/10 of the original. [Effects After Installation] - After 19 days of installation, the iron content in the hot water decreased to 0.388 mg/l. - After 29 days of installation, it further reduced to 0.077 mg/l, completely preventing the deterioration of red rust. - By preventing external corrosion, this piping can be used for 100 years or even 200 years as long as the building remains. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

At Kumamoto Red Cross Hospital, a red rust prevention device called "NMR Pipe Protector" was installed in the air conditioning chilled and hot water piping to prevent red rust after 16 years of construction, and the rust prevention effect was verified. Two weeks after installation, water samples were taken from the air conditioning chilled and hot water piping, and upon retesting, the total iron content due to red rust in the water significantly decreased to 0.07 mg/l. On February 27, 2019, four years after installation, water sampling was conducted, and it was confirmed that new red rust was completely prevented, and existing red rust was converted into insoluble black rust, maintaining the water's transparency. [Summary] ■ Before installation: The total iron content due to red rust in the water was 12.3 mg/l, indicating progression of red rust in the piping. ■ Effects after installation: - Two weeks after installation, the total iron content due to red rust in the water significantly decreased to 0.07 mg/l. - Four years after installation, new red rust was completely prevented. - Existing red rust was converted into insoluble black rust, maintaining the water's transparency. - The total iron content in the water remained below 0.1 mg/L, indicating that red rust was not dissolving in the water. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

The 250th branch, located in the Bishops Gate area of London, which was built 18 years ago, had issues with red rust deterioration in its air conditioning system. To address the red rust in the piping, a rust inhibitor was being used, but there were environmental concerns. Therefore, on March 23, 2018, an "NMR Pipe Protector" was installed in the air conditioning hot water piping. One year after installation, a follow-up survey conducted by the bank revealed that the iron concentration was 0.03 mg/l, indicating a very low level and confirming that the rust prevention effect in the piping persisted after one year. Furthermore, it was demonstrated that by continuing to use this product in the future, red rust would be reduced to a stable black rust, thereby protecting the piping and extending its lifespan to match that of the building. [Effects After Installation] - Six weeks after installation, the iron concentration in the water was measured under the same conditions as before installation, showing a decrease from 1.1 mg/l to 0.41 mg/l. - One year after installation, the iron concentration was 0.03 mg/l, indicating a very low level. - It was demonstrated that protecting the piping would extend its lifespan to match that of the building. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

In the west wing of this guild hall facility built in 1974, an "NMR Pipe Protector" was installed to eliminate red water from the hot water supply piping and prevent deterioration from red rust, thereby extending the lifespan of the piping. Before installation, the iron content was at a very high level of 6.36 mg/l, but three weeks after installation, it dropped to 0.015 mg/l, and after seven weeks, it further decreased to 0.007 mg/l, significantly below the UK water supply quality standard of 0.2 mg/l, resulting in the complete elimination of red water. The occurrence of new red rust within the piping has been prevented, and the existing red rust has been converted to black rust, demonstrating the effectiveness of this product in preventing red rust and extending the lifespan of the piping. [Effects After Installation] - Three weeks after installation, the iron content was 0.015 mg/l, and seven weeks later, it was 0.007 mg/l, significantly below the UK water supply quality standard of 0.2 mg/l. - The effectiveness in preventing red rust and extending the lifespan of the piping has been demonstrated. - The hot water supply piping can be used as long as the building remains standing by preventing external corrosion. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

This property is 12 years old and uses polyvinyl chloride lining steel pipe (VLP) for the water supply pipe joints. The estimated cost for future renovation work to replace these with stainless steel pipes as a measure against future red rust blockage is expected to exceed approximately 100 million yen per building. Additionally, when measuring the red rust blockage rate at the dissimilar metal joint of the kitchen water supply pipes in two units, the rates were found to be 77.5% and 37.3%. By introducing the "NMR Pipe Protector" at less than one-twentieth of the cost, the red rust issue was resolved. After 12 months of installation, the red rust blockage rates significantly decreased to 60.0% and 31.0%, and prevention of red rust and the occurrence of black rust were confirmed. [Effects After Installation] - After 12 months of installation, the red rust blockage rates significantly decreased to 60.0% and 31.0%, confirming the prevention of red rust and the occurrence of black rust. - After 27 months of installation, it was confirmed that the red rust had turned into black rust, with a volume reduction to one-tenth, resulting in rates of 58.5% and 23.3%. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Buckingham Palace, galvanized steel pipes (SGP pipes) are used for the air conditioning hot water piping and hot water supply piping, and some of the piping was updated due to deterioration from red rust. However, since the majority of the piping has not been updated, "NMR Pipe Protectors" were installed in both the air conditioning hot water piping and the hot water supply piping to prevent red rust deterioration and extend the life of the piping. Water samples were taken from the circulating hot water before and after installation, and the reduction in iron ion levels in the water was used to verify the effectiveness of rust prevention. As a result, before installation, the iron content in the water of the air conditioning hot water piping was 16.6 mg/l, but it significantly decreased to 0.455 mg/l 24 days after installation. 【Overview of Installation】 ■ Building Name: Buckingham Palace ■ Location: London ■ Building Overview: Completed in 1703, 304 years old, 775 rooms ■ Installation Date: January 12, 2007 ■ Installed Piping/Number of Installations: Air conditioning hot water piping/PT-100DS×1 unit, circulating hot water piping/PT-50DS×1 unit, circulating hot water piping/PT-30DS×1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Hospital #H, which was built 48 years ago, the air conditioning chilled and warm water piping using galvanized steel pipes (SGP) has shown significant deterioration due to red rust, leading to leaks. Therefore, we installed the red rust prevention piping extension device "NMR Pipe Protector." Before installation, we sampled the circulating chilled and warm water, and it was found that the total iron content in the water was 2.5 mg/l, indicating that red rust corrosion was progressing within the piping. Four weeks after the installation of our product, the total iron content in the chilled and warm water had significantly decreased to 0.4 mg/l. A sampling conducted six years after installation showed that the total iron content in the water further decreased to 0.2 mg/l, completely halting the progression of new red rust in the air conditioning chilled water piping. The existing red rust had transformed into insoluble, passivated black rust, with a volume reduced to one-tenth. [Introduction Overview] ■ Hospital Location: Hamamatsu City, Shizuoka Prefecture ■ Hospital Overview: 41 years old, 2 basement floors and 9 above-ground floors with 606 beds ■ Installation Date: December 2013 *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

The hot water supply piping at the Cambridge University Hospital uses galvanized steel pipes (SGP) as the piping material, and the piping was updated three years ago. However, red water and leaks occurred due to bacterial corrosion. To prevent red rust corrosion in this piping, "NMR Pipe Protectors" were installed. Before the installation of this product, the iron content in the hot water supply piping was high at 1.07 mg/l, and discoloration was observed. However, 11 days after installation, the iron content in the hot water decreased to 0.188 mg/l, and the red water was completely resolved. [Introduction Overview] ■ Hospital Name: Cambridge University Hospital (Addenbrooke's) ■ Hospital Location: Hills Road, Cambridge, UK ■ Hospital Overview: 28 years old (3 years since piping update), 5 stories (over 1000 beds) ■ Installation Date: February 16, 2004 ■ Installed Piping/Number of Units - Secondary side hot water supply piping from the storage tank (SGP pipe 65mm)/2 units of PT-75DS - Water supply piping for the 3rd floor (SGP pipe 32mm)/1 unit of PT-30DS *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Hospital #A, which was built 31 years ago and uses galvanized steel pipes (SGP) for its air conditioning hot water piping, significant deterioration due to red rust has been observed. To prevent future leaks, a red rust prevention piping extension device called "NMR Pipe Protector" has been installed. Before installation, a sample of the circulating air conditioning hot water was taken, revealing a total iron concentration of 130 mg/l due to red rust, indicating severe corrosion within the pipes. Two weeks after the installation of the product, a sample of the air conditioning hot water showed a total iron concentration of 4.6 mg/l, a significant reduction. Furthermore, a sample taken four weeks after installation showed a total iron concentration of 2.7 mg/l, reducing it to 1/50 of the previous level. The progression of new red rust within the pipes has completely stopped, and the existing red rust has transformed into an insoluble black rust with a volume reduced to one-tenth. [Introduction Overview] ■ Hospital Location: Sapporo City, Hokkaido ■ Hospital Overview: 31 years old, 1 basement floor and 4 above-ground floors with 554 beds ■ Installation Date: April 2018 *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Hospital #I, due to significant deterioration from red rust in the air conditioning chilled and hot water piping, which uses galvanized steel pipes (SGP) that are 19 years old, we installed a red rust prevention piping extension device called "NMR Pipe Protector" to prevent leaks. Before the installation of this product, we sampled the circulating air conditioning chilled and hot water, and found that the total iron content in the water was very high at 5.1 mg/l due to red rust, indicating considerable corrosion within the piping. Three weeks after the installation, sampling of the air conditioning chilled and hot water showed that the total iron content in the water had decreased to less than 0.03 mg/l, completely halting the progression of new red rust in the air conditioning chilled and hot water. It was confirmed that the red rust previously present in the piping had transformed into insoluble black rust, which is one-tenth the volume of the original. If Hospital #I continues to use this product, the air conditioning chilled and hot water piping will no longer require future replacements, and costs will be reduced to less than one-tenth, extending the lifespan of the building. *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Hospital #K, which was built 30 years ago, deterioration due to red rust in the air conditioning chilled and hot water piping using galvanized steel pipes (SGP) has progressed. To prevent leaks, a red rust prevention piping extension device called "NMR Pipe Protector" was installed. Before installation, water samples were taken from the circulating air conditioning chilled and hot water, revealing that the total iron content in the water was 3.6 mg/l, indicating significant corrosion from red rust within the piping. Ten years after installation, effectiveness verification through water sampling and analysis by an external organization showed that the iron content was maintained at a good level of 0.2 mg/l, demonstrating the sustainability of the red rust prevention effect provided by the product. 【Introduction Overview】 ■ Hospital Location: Edogawa Ward, Tokyo ■ Hospital Overview: 31 years old, 4 stories, 144 beds ■ Installation Date: December 2020 ■ Installed Piping/Number of Installations ・Secondary side chilled and hot water (supply) main pipe of the air conditioning chilled and hot water generator (SGP pipe 150mm)/PT-150DS × 1 unit ■ Effect Measurement Method: Effect verification through water sampling *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

At Hospital #E, which was built 30 years ago, there were concerns about leaks due to the deterioration of red rust in the air conditioning hot water piping that uses galvanized steel pipes (SGP). Therefore, a red rust prevention device called "NMR Pipe Protector" was installed. Before installation, a sample of the circulating air conditioning hot water was taken, revealing that the total iron content in the water due to red rust was 360 mg/l, indicating significant corrosion of the pipes. Two weeks after the installation of the product, a sample of the air conditioning hot water showed that the total iron content in the water had significantly decreased to 0.4 mg/l. [Introduction Overview] ■ Hospital Location: Ebetsu City, Hokkaido ■ Hospital Overview: 30 years old, 4-story building with 200 beds (entire facility) ■ Installation Date: November 2017 ■ Installed Piping/Number of Units - Main building heat exchanger secondary side hot water supply pipe (SGP pipe 100mm)/PT-100DS x 1 unit - <Water Supply System> PT-100DS x 2 units *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

In the water supply district of Huong Canh in Binh Phuoc Province, Vietnam, cast iron pipes (150A) have been in use for 15 years, leading to the progression of red rust corrosion inside the pipes, resulting in the frequent occurrence of red water. To address this red water issue, a red rust prevention device called "NMR Pipe Protector" was installed at the base of the cast iron water supply pipe (150A). Before installation, the water color and the amount of red rust at the sampling points were as follows: the northern sampling point, located 500 meters north of the installation site, had a light brown color and 7.0 mg/l of red rust; the western sampling point, located 300 meters west, had a brown color and 8.0 mg/l; and the southern sampling point, located 600 meters south, had a dark brown color and 23 mg/l. Two weeks after installation, the northern sampling point showed a lighter color and a reduction in red rust to 4.6 mg/l. The western point also nearly lost its color, decreasing to 2.0 mg/l. The southern point changed to a light brown color with a reduction to 12 mg/l. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

Shepperton Film Studios (Hotel) is a historic filming studio located in Surrey, on the outskirts of London. The first building was constructed in 1689, and after suffering a fire, it was rebuilt in 1902 and later converted into a hotel for film actors in 1936. There was an issue with red rust in the plumbing, but plumbing work could not be done as it would affect the appearance of the building, which is registered as a Grade II cultural heritage site. Therefore, the NMR Pipe Protector PT-30DS was installed in the hot water plumbing to prevent red rust without affecting the building's appearance. In the men's restroom, where galvanized steel pipes are used, the iron content in the hot water plumbing was 20 mg/l before the installation of the NMR Pipe Protector, but after 10 weeks, it decreased to 0.37 mg/l. In the first-floor kitchen, the iron content was 14.5 mg/l before installation and reduced to 0.386 mg/l after 10 weeks. From this, it can be concluded that the occurrence of new red rust in the hot water plumbing has been completely prevented, and the existing red rust has transformed into black rust, which is inert and insoluble in water, thereby proving the rust prevention effectiveness of the NMR Pipe Protector.

• Rust Inhibitor

This property has been in existence for 33 years, and due to significant red rust blockage at the joints of dissimilar metals in the water supply pipes, we adopted the pipe rehabilitation device "NMR Pipe Protector." Before the installation of the NMR Pipe Protector, a white filter was attached to the kitchen sink water supply faucet for seven days, during which the filter became discolored to a brownish color due to the red rust generated in the water supply pipes. After dissolving the captured iron content with purified water and measuring the iron concentration, it was found that the iron concentration in the water was 21 mg/l, indicating that the red rust corrosion in the pipes was very advanced. One month after installation, a white filter was attached under the same conditions as before, and it was confirmed that the discoloration of the filter had reduced to light brown, with the iron concentration decreasing significantly to 5.8 mg/l. Furthermore, six months after installation, a white filter was again attached under the same conditions, and it was confirmed that the filter's discoloration had nearly reduced to white, with the iron concentration further decreasing significantly to 0.75 mg/l. From this, it can be concluded that just one month after the installation of the NMR Pipe Protector, the progression of red rust was completely halted, and at the same time, the surface of the red rust in the water supply pipes transformed into a non-soluble black rust, resulting in a reduction of iron leaching into the water and a decrease in filter discoloration.

• Rust Inhibitor

St. Ignatius Church, also known as the Catholic Kojimachi Church, is a historic church adjacent to Sophia University that has existed since before the war. Four years ago, due to the deterioration of red rust in the air conditioning chilled and hot water piping, we conducted an evaluation of the rust prevention effect of the "NMR Pipe Protector," a device designed to prevent red rust within the piping. Before the installation of the NMR Pipe Protector, we collected samples of the circulating chilled and hot water, which showed a brownish color. Water quality tests revealed a total iron concentration of 240 mg/l, indicating significant progression of red rust corrosion within the piping. After installing the NMR Pipe Protector, we conducted another water sampling test two weeks later, and the water color had become nearly transparent, with the total iron concentration due to red rust reduced to 2.7 mg/l, a substantial decrease. At the same time that the progression of red rust had stopped, the surface red rust within the chilled and hot water piping and the red rust in the water transformed into a non-soluble black rust, confirming the rust prevention effect of the NMR Pipe Protector within the chilled and hot water piping. This result was featured in an article published on July 18, 2018, in issue 2737 of "Air Conditioning Times," which reported on the verification of the rust prevention effect of the NMR Pipe Protector at St. Ignatius Church.

• Rust Inhibitor

The British Museum in London is one of the most famous museums in the world, housing over 8 million works of art, of which 150,000 are displayed sequentially. The museum is 264 years old and has issues with red rust sludge in its air conditioning hot water piping. To prevent damage to the artworks caused by leaks in the piping, it was necessary to protect the pipes. Thus, the "NMR Pipe Protector" was installed, which does not require cutting the pipes and protects them from leaks and red water caused by red rust, allowing the pipes to be safeguarded for over 40 years. The iron content in the water before the installation of the NMR Pipe Protector was 20 mg/l, but one week after installation, the iron content decreased to 12.2 mg/l. It continued to decrease, and it was confirmed that the iron content had reduced to 0.2 mg/l five weeks after installation. As a result, new red rust corrosion in the pipes was completely halted, and the existing red rust was reduced to black rust, proving that the pipes were protected. Thanks to the effectiveness of the NMR Pipe Protector, the air conditioning hot water piping can be used as long as the building remains standing.

• Rust Inhibitor

The Palace of Westminster is currently used as the UK Parliament and is one of the most famous buildings in the UK. It is located on the banks of the River Thames in central London and is a structure over 150 years old that was rebuilt around 1860. In one of the multiple buildings (the Guard Room), the air conditioning hot water piping was severely corroded due to red rust. To prevent the occurrence of new red rust in this piping system, one "NMR Pipe Protector PT-75DS" was installed in the air conditioning hot water piping on the secondary side of the boiler. The iron content in the water before the installation of the NMR Pipe Protector was 3.9 mg/l, but it decreased to 2.38 mg/l 34 days after installation. It was confirmed that 59 days after installation, the iron content in the water had decreased to 1.48 mg/l, which is less than half of the pre-installation value. This result demonstrated that the occurrence of new red rust in the piping was completely stopped, and the existing red rust was converted to black rust, which does not dissolve in water and protects the piping with a corrosion-resistant layer. With the installation of the NMR Pipe Protector, the air conditioning hot water piping can now be used semi-permanently as long as the building remains standing.

• Rust Inhibitor

After 53 years since its construction, the BBC (British Broadcasting Corporation) has been experiencing serious deterioration of its cooling water piping due to the use of SGP pipes, leading to frequent leaks and significant rust issues. To prevent leaks caused by rust deterioration and to extend the lifespan of the piping, four "NMR Pipe Protectors" were installed in the cooling water systems of the Main Block Building and Stage 5 Building. In the Main Block Building, the iron concentration in the water was 5.53 mg/l before the installation of the product, but it significantly decreased to 0.048 mg/l after 32 days and further reduced to 0.06 mg/l after 57 days. In Stage 5 Building, the iron concentration in the water was 3.8 mg/l before installation, which decreased to 0.063 mg/l after 32 days and to 0.008 mg/l after 57 days. Additionally, there have been no leaks reported after the installation. The prevention of new rust formation and the transformation of existing rust in the piping into insoluble black rust in the water have resulted in a reduction of iron concentration, demonstrating that this cooling water piping can be extended to the lifespan of the building. *For more details, please refer to the PDF document or feel free to contact us.*

• Rust Inhibitor

Our bank located in Tower Hill, London, had issues with red rust deterioration in the air conditioning hot water piping. To protect the air conditioning system from red rust deterioration, the "NMR Pipe Protector PT-200DS" was installed on September 26, 2008. Before the installation of the product, the iron content in the hot water was very high at 21 mg/l, but after 6 weeks of installation, it decreased to 0.36 mg/l, and after 7 weeks, it reached 0.05 mg/l, completely preventing red rust. [Introduction Overview] ■ Building Name: Société Générale Bank ■ Location: Tower Hill, London ■ Building Overview: Bank ■ Installation Date: September 26, 2008 ■ Installed Piping/Number of Installations: Air conditioning hot water piping/PT-200DS × 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

We would like to introduce the verification results conducted by our company. Due to the deterioration of red rust in the water supply pipes, we installed the "NMR Pipe Protector." The iron content before installation was 1.1 mg/l, but it decreased to 0.22 mg/l within two months of installation, proving the rust prevention effect. 【Introduction Overview】 ■ Location: Kodaira City, Tokyo ■ Installation Date: December 12, 2012 *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

London City University is one of the famous universities located in North London. It uses SGP for its air conditioning hot water piping, and the pipes in the over 40-year-old building were experiencing red rust corrosion. To completely protect the piping from red rust corrosion, "NMR Pipe Protector" was installed. Before installation, the iron content in the water due to red rust was 3.407 mg/l, but two weeks after installation, the iron content decreased to 0.084 mg/l. This demonstrated that our product prevented the occurrence of new red rust in the piping and reduced existing red rust to inert black rust. 【Introduction Overview】 ■ Building Name: London City University ■ Location: London, UK ■ Building Overview: 47 years old, university ■ Installation Date: June 13, 2013 ■ Installed Piping/Quantity: Air conditioning hot water piping/PT-200DS × 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

This nursing facility had experienced significant deterioration due to red rust in the water supply and hot water supply pipes. Therefore, when the building was 25 years old, we installed the red rust prevention device "NMR Pipe Protector" in the water supply pipe on the secondary side of the rooftop water tank and in the hot water pipe on the secondary side of the boiler. Before the installation of the NMR Pipe Protector, the iron ion concentration in the water supply was 2.27 mg/l, and the color degree was 20, indicating severe deterioration due to red rust in the pipes. Four weeks after the installation of the NMR Pipe Protector, the iron ion concentration in the water was reduced to 0.46 mg/l, and the color degree improved to 5, showing a significant improvement in water quality. Furthermore, the water quality test results 12 weeks after installation showed that the iron ion concentration in the water was 0.03 mg/l, and the color degree was less than 0.5. The red rust in the water supply pipe had transformed into hard black rust with a volume reduction of 1/10, stopping the leaching of red rust into the water. The rehabilitation of the pipes due to the black rust formation from red rust was confirmed. As a result, it has been demonstrated that by continuing to use the NMR Pipe Protector, both the water supply and hot water supply pipes can be extended to last until the building's lifespan.

• Rust Inhibitor

The hospital, which was 27 years old at the time, was using galvanized steel pipes (SGP), and the red rust deterioration in the air conditioning chilled and hot water piping was very advanced, raising concerns about leaks. Before the red rust corrosion could progress any further, a red rust prevention piping extension device called "NMR Pipe Protector" was installed. After 52 days of installation, the water sampled from the air conditioning hot water system under the same conditions was clear, and the water quality test results showed that the iron ion concentration in the water was 0.27 mg/l, which is below the water quality standard value (1.0 mg/l) set by the Japan Refrigeration and Air Conditioning Industry Association. If this product continues to be installed in the hospital's air conditioning chilled and hot water piping, it has been verified that the red rust deterioration and leaks in the piping will be completely prevented, extending the piping's lifespan to match the building's lifespan. [Overview of Installation] ■ Hospital Location: Sendai City, Miyagi Prefecture ■ Hospital Overview: 27 years old, 5 stories, 199 beds ■ Installation Work: December 25 to 28, 2006 *For more details, please refer to the PDF document or feel free to contact us.

• Rust Inhibitor

■Over 4,300 installations! (As of March 2022) ■Patented and registered with NETIS Plus. ■Featured on World Business Satellite (WBS)! ■Quickly resolves pipe clogs. ■No power required, no running costs. ■No chemicals used, safe for food factories. ■No maintenance needed. The "NMR Pipe Protector" can resolve clogs in pipes by converting red rust into black rust, rejuvenating the piping system. Black rust has a smaller volume than red rust, is insoluble in water, and possesses strong properties. By converting red rust in pipes to black rust, the typical lifespan of pipes, which is around 20 years, can be extended to over 40 years.

• Water supply facilities

The NMR Pipe Protector is adopted not only in Japan but also in various important facilities around the world. At the Mandarin Oriental Hyde Park, London, galvanized steel pipes (SGP) were used for the hot water supply. Galvanized steel pipes have a relatively short lifespan of about 10 to 20 years, and red rust was occurring within the hotel's hot water supply pipes, leading to poor water hygiene. While the standard value for iron content in water based on UK water quality regulations is 0.2 mg/l, the iron content in the hotel's hot water supply pipes was 13.35 mg/l. This value significantly exceeds the standard, highlighting the seriousness of the situation. With the NMR Pipe Protector, the iron content in the hot water supply pipes was reduced to below 0.2 mg/l. The NMR Pipe Protector utilizes free electrons in water, known as hydration electrons, to reduce the red rust that forms inside the pipes to black rust. This rust prevention technology, which Japan takes pride in, is also featured as one of the top 10 rust prevention technologies in the US manufacturing technology magazine "Manufacturing Technology Insights" (March 12, 2020). *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

In 2013, the "NMR Pipe Protector" was adopted at City, University of London, a prestigious university in the UK. The air conditioning hot water pipes used SGP (galvanized steel pipes), which led to issues such as brown water due to the leaching of red rust and leaks from pipe joints, necessitating urgent measures to address the deterioration of red rust in the pipes. After the installation of the NMR Pipe Protector, the progression of red rust completely stopped within just two weeks. The iron content in the circulating water within the pipes, which was 3.41 mg/l before the introduction of the NMR Pipe Protector, remarkably decreased to 0.08 mg/l. Theoretically, over 75% of the existing red rust was reduced to black rust by the NMR Pipe Protector. This confirmed the effectiveness of red rust prevention. The black rust formed by the NMR Pipe Protector protects the iron from red rust corrosion, and since black rust has a volume that is one-tenth that of red rust, it strengthens the pipe's durability. Thanks to the rust prevention effect of the NMR Pipe Protector, the air conditioning hot water pipes at City, University of London can now be used for over 40 years. *For more details, please refer to the PDF document or feel free to contact us.*

• Renovation and repair methods

At the Millennium Hotel London Mayfair, urgent measures were needed to address corrosion due to red rust in the air conditioning hot water piping. The chosen solution was the 'NMR Pipe Protector', which can be implemented at less than one-tenth the cost and has a low environmental impact while preventing red rust early on. Before installation, the iron content in the circulating water of the air conditioning hot water piping showed a very high value of 15.70 mg/l due to the progression of red rust deterioration and leaching. After re-examination six weeks post-installation, the iron content decreased to 0.16 mg/l, demonstrating that the amount of iron leached into the water reduced to about one-hundredth compared to before installation, confirming the effectiveness of red rust prevention. Thus, the water quality of the circulating water in the air conditioning hot water piping recovered to a completely acceptable level. One of the significant reasons for choosing the NMR Pipe Protector is that it is a very eco-friendly red rust prevention device. It can rehabilitate old piping that has been in use for many years, extending the lifespan of the building. Replacing the piping would result in significant CO2 emissions due to the disposal of the old pipes, so the NMR Pipe Protector, which allows for the continued use of old piping, has a very low environmental impact. *For more details, please refer to the PDF document or feel free to contact us.*

• Renovation and repair methods

At Cambridge University, galvanized steel pipes (SGP), which are said to have a lifespan of about 20 years due to red rust, were used for the hot water piping system. As a result, they were severely troubled by the deterioration caused by red rust, until the introduction of the "NMR Pipe Protector." Before installation, the iron content in the circulating water flowing through the pipes, due to the leaching of red rust, was measured at 43.8 mg/l, indicating a very high level due to red rust. However, just three weeks after installation, inspections showed that the iron content had decreased to less than half, at 18.0 mg/l. Furthermore, a follow-up inspection about a year after installation revealed that the iron content in the same hot water had decreased to 0.5 mg/l, completely preventing red rust and successfully reducing the iron content to about 1/100 of the level before installation. This is a sufficient value to indicate that the corrosion from red rust has stopped and that black rust formation has progressed. For comparison, the water quality standard set by the Japan Refrigeration and Air Conditioning Industry Association is an iron content of 1.0 mg/l. The result of 0.5 mg/l at Cambridge University is half of that standard, confirming the effectiveness of red rust prevention. *For more details, please refer to the PDF document or feel free to contact us.*

• Renovation and repair methods