We will introduce a case where frequent holes appeared in the hot water pipes (copper pipes) of the central hot water supply system at a university hospital, leading to ongoing repairs.
At the university hospital, the hot water supply pipes (copper pipes) frequently developed holes, leading to constant repairs. Inspection results confirmed copper leaching, and it was determined that the high levels of free carbonic acid in the well water used for make-up water—ten times higher than in tap water—were the cause. Free carbonic acid is highly corrosive to copper, so as a corrosion prevention measure, a drinking water rust inhibitor was applied to resolve the issue. 【Overview】 ■Problem - Frequent holes in the hot water supply pipes (copper pipes) leading to constant repairs. ■Solution - Applied a drinking water rust inhibitor as a corrosion prevention measure. *For more details, please refer to the PDF document or feel free to contact us.
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Here is a case where general bacteria were detected at 700 times the standard value. 【Overview】 ■Issue A water quality test of hot water was conducted in accordance with the Building Hygiene Law, and general bacteria exceeding the standard value (100 colonies/mℓ) were detected. ■Solution - General bacteria were detected at 70,000 colonies/mℓ in the hot water, and as an emergency measure, the water was replaced and heat treatment was performed by setting the water temperature to 80℃, resulting in sterilization and bringing the general bacteria count down to 0 colonies/mℓ. - Regular cleaning was implemented to ensure the supply of safe hot water.
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Air conditioning and sanitation equipment can experience various issues. Our company goes beyond being just a cleaning and analysis service provider; we scientifically investigate "why problems occur" to offer our customers new value. As a result, our goal is to expand the circle of joy and contribute to society. We engage in a wide range of businesses, including "investigating," "cleaning," and "protecting." To provide the best service tailored to our customers' situations, service engineers who have passed our ISO 9001 standards are responsible for execution in each field. Additionally, we are insured against unforeseen circumstances, ensuring that we have a system in place to provide our customers with stable quality services.
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