- After thoroughly rinsing the tank or lines after welding and installation of new equipment, and confirming that there are no leaks, proceed with cleaning and passivating.
- Check system to make sure there are no metals other than stainless steel in the system.
- Acid resistant gaskets such as EPDM are best, but if using buna gaskets, check condition before and after passivation.
- Start with a chelated caustic compound, and add 100 ppm of chlorine if there is no chlorine in the caustic compound. Use 1 to 2% caustic solution, and refer to manufacturers directions for time and temperatures, usually longer the better, but at least for 1 hour.
- Rinse the caustic solution out thoroughly until rinse water ph is close to plant water ph.
- If using Nitric acid, add enough gallons to system to reach ph of 1.5 to 2. Use warm tepid water, and circulate for 45 minutes.
- Rinse thoroughly with fresh water, and open tank lines to air dry.
- Air dry as long as possible, possibly two days if possible to achieve maximum chromium oxide reaction that occurs. If time is a problem, install circulation fans in tank doorways, or route air through lines to speed up the process.
- If using citric acid, add sufficient pounds of citric acid to achieve ph of 1.5 to 2 ph, and follow same guidelines as for the nitric passivation.
- Combinations of nitric-phosphoric acid blends may be used and follow the above time temperature guidelines and ph levels.
MechPro was recently hired to pull fuel transfer pumps from a fuel barge. These 40 ft. long pumps reach from the bottom of the barge to the top and are used to fuel ships, container ships, cruise ships, large fishing trawlers. The pumps were hoisted by crane and secured to a 48 ft. flatbed for transportation for delivery to the customer.
MechPro’s team of experienced, professional field maintenance technicians are available 24/7 to restore your heat exchanger to operating condition as soon as possible. Our goal is simple; to minimize your downtime and prevent the same problem from recurring. We understand that your heat exchanger is a mission critical component of your business and will assist in minimizing losses from lost production or unplanned down time.
Many times heat exchanger failures can be avoided by subscribing to a regularly scheduled MechPro maintenance program. Call or Email MechPro for details today.
Servicing all 50 states, on-site services, competitive rates, multiple T.W.I.C. card holders.
Chemical cleaning is the most effective and time efficient way to get your plates back to a like-new condition.
Our specially formulated chemical cleaners will remove:
- Biological growth
- Other hard deposits
- Plate & Frame HX’s
- Tube & Shell HX’s
- Cooling Towers
- Pumps & Motors
Industries of customers serviced by MechPro Inc. include:
- Data Centers
- Aeronautical Engineering
- Data Centers
- Paper & Pulp
- Food Industry
- Power Generation
- and more…
Welcome to MechPro Inc.’s heat exchanger service website.
Is your wort chiller fouling or leaking?
Do you have cross-contamination?
Are you looking for more efficiency?
Say goodbye to hazy beer forever and call Chris Hegge at MechPro Inc. for the solutions to your problems, (425) 445-5230.
MechPro has been helping to keep wort cold since 2010.
Serving breweries throughout the Greater Seattle Area, Washington, Oregon, Idaho, all of the Pacific Northwest.
Interesting Facts: The purpose of a wort cooler is to cool down the wort (beer before alcohol) so the yeast can be added. The wort in the kettle is boiling about 212*F and needs to be brought down to about 68*F. The amount of time to do this is referred to as the knock out time.
MechPro Inc. provides professional deep cleaning to remove scale and other debris that cause fouling of Plate Heat Exchangers as well as Tube and Shell Heat Exchangers. Clean-in-place (CIP) service is available to restore your heat exchanger to an efficient operating state as quickly as possible, resulting in a significant reduction in maintenance expense.