Dye Penetrant Testing (DPT) for Heat Exchangers
MechPro offers NDT Services at their Seattle based Service Center
Dye Penetrant Testing (DPT) process:
- After the plates have been properly cleaned and dried.
- The plates are brought into the spray booth area where the dye gets sprayed on one side only.
- After the dye is applied the plates are stacked to allow the dye to work into the material.
- Plates are then moved to the dark room area where black fluorescent lights are used to identify the pin holes or cracks.
- All pin holes and cracks are marked with a black felt permanent marker.
- Dye is washed off.
- Plates are dried.
MechPro Inc. Provides Marine Vessel Tube and Shell Heat Exchanger Service
Marine Vessel Heat Exchanger Service
MechPro located the source of a shiny rainbow oil slick on the water’ s surface outside of a vessel at port. The oil was coming from a compromised tube in the MELO cooler.
MechPro provides heat exchanger parts and service for the marine industry.
Frozen Heat Exchanger Troubleshooting
Food and Beverage Industry Heat Exchanger Maintainance
In the refrigeration process, this ammonia Plate Heat Exchanger is used to chill water. The customer had a flow problem that led to a freezing problem. The water flow was accidentally slowed to nearly a complete stop. The ammonia quickly froze the water inside the heat exchanger which resulted in Heat Exchanger Plate failure rather than gasket failure. A failure through the plate will allow cross-contamination.
The bubbling is evidence of plate failure as revealed by conducting a Bubble Test with air being forced through one side of the HX while the other side is flooded with water. Multiple pinholes were discovered in 6 out of 60 plates. The 6 bad plates were removed before performing another test at 125 psi which revealed 4 more bad plates. We had replacement heat exchanger plates and heat exchanger gaskets in stock which enabled us to assist the customer in taking their production back on-line the next day.
MechPro Inc. Heat Exchanger incident response team is on call 24/7 to assist with getting your operation back on-line as quickly as possible.
MechPro Provides HVAC Heat Exchanger Service
High-Rise HVAC Heat Exchanger Plate Expansion Job
Mechpro Inc., a leading West Coast provider of Heat Exchanger Parts and Service, recently completed a heat exchanger plate expansion job for the HVAC system in one of downtown Seattle’s tallest office buildings.
Tranter Gasketed Plate Heat Exchanger Model: UXP-400-H-6-SP-219
Intended End Use: Heat exchanger to cool Water 10.48 °F using 83 °F Water with pressure drop at or below 3.08 psi on hot side and at or below 3.1 psi on cold side.
Plate Material (Material/Thickness): 304 SS / 0.6 mm
Gasket Material (Hot/Cold): NBR / NBR
Total Number of Plates: 219
Capacity: 1040 gallons per minute
Increased pump size to increase flow rate and added heat exchanger plates to exchange more heat for added volume.
If your facility operates gasketed plate-and-frame heat exchangers then you should consider including a regular maintenance and cleaning schedule in your operating budget. The two main benefits of a clean plate heat exchanger are:
- Reduced downtime.
- Decreased energy consumption and reduced energy costs.
If you have reason to believe that your facility’s plate-and-frame heat exchangers have not been cleaned or inspected for a prolonged or undetermined period of time then contact MechPro Inc. at (800) 249-6709 to schedule a service appointment today. As one of the most professional and experienced PHEX Service Providers on the West Coast, MechPro Inc. subscribes to a proactive maintenance philosophy to help customers benefit from lower energy bills and reduced downtime.
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MechPro Inc. Shell and Tube Heat Exchanger Pressure Test
Heat Exchanger Pressure Testing
MechPro Inc. documents a 70 psi pressure testing of marine vessel Shell and Tube Heat Exchanger to identify the source of leaks as coming from flange gaskets and improperly sized bolt and nut assembly.
Basic Guidelines for Passivation of Stainless Steel Lines and Tanks
- 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.
Plate and Frame Heat Exchanger Repair
MechPro Inc. has been providing Plate and Frame Heat Exchanger Repair services since 2010.
We provide complete heat exchanger repair and refurbishment service as well as supplying replacement gaskets, plates, and other spare parts.
In our shop, we clean, inspect and re-gasket heat exchanger plates for plate and frame heat exchangers. In the field, our trained technicians install new plates and plate packs. MechPro also offers Clean-in-Place (CIP) services. MechPro has established a reputation as a dependable, professional service provider whose team always works hard to meet your deadlines and minimize any downtime.
Scheduling routine inspection and maintenance of your company’s Plate Heat Exchangers is a cost-effective solution that helps ensure efficient operations, prolongs your equipment’s life, and reduces the risk for future downtime.
Call MechPro Inc. today at (800) 249-6709 for full-service Plate and Frame Heat Exchanger Repair.
Gaskets for MAN B&W Engine Model Series
MechPro Inc. provides gaskets for the following MAN B&W Diesel Engines
| ENGINE MODEL NUMBERS | ||
|---|---|---|
| L16-24 | V28/33D | D2868 LE 433 |
| L21-24 | L23/30H | D2862LE 423 |
| L21/31 | L28/32H | D2862LE 433 1550 |
| L27/38 | L32/40 | D2862LE 433 1650 |
| L27/38 GO | D2868 LE 423 | D2862LE 433 1800 |
MAN B&W marine diesel engines .
Sometimes finding the right gasket is easier sa
id than done.
If you need help selecting the right gasket for your needs, please use our Quote Request Form. Provide as much information as you can about the gasket parts you require and our knowledgeable staff will promptly respond to your request.
We carry a wide assortment of replacement gaskets for MAN B&W marine diesel engines.
Call MechPro Inc. at (800) 249-6709 for a quote today.
MAN Diesel & Turbo is one of the world’s leading designers and manufacturers of low and medium speed engines which are said to cover 50% of the power needed for all World trade.
MAN Diesel & Turbo develops two-stroke and four-stroke engines, auxiliary engines, turbochargers and propulsion packages.
Gaskets for Cummins Engine Model Series
MechPro Inc. provides gaskets for the following Cummins Diesel Engines
| ENGINE MODEL NUMBERS | |
|---|---|
| KTA 19 | QSK 19 |
| KTA 38 | QSK 38 |
| KTA 50 | QSK 50 EN 60 |
Cummins marine diesel engines have a strong marine heritage dating back to the Company’s start in 1919. Cummins provides reliable, durable diesels to the marine market with a broad range of power 5.9 to 95 liters for commercial, government, and recreational applications.
Cummins marine engines have been engineered to meet the durability and performance needs of marine applications and seawater cooling options and controls seamlessly integrated to ensure the propulsion of your vessel meets your needs. Cummins marine engines are backed by the largest service network in the industry, including Regional Response Teams for commercial fleets and Cummins Care Marine Experts for recreational boaters.
Sometimes finding the right gasket is easier said than done.
If you need help selecting the right gasket for your needs, please use our Quote Request Form. Provide as much information as you can about the gasket parts you require and our knowledgeable staff will promptly respond to your request.
We carry a wide assortment of replacement gaskets for Cummins marine diesel engines.
Call MechPro Inc. at (800) 249-6709 for a quote today.
MechPro Provides Heat Exchanger Services to the US Coast Guard
MechPro Inc. providing final pressure testing for two completely refurbished Tranter Superchanger Plate Heat Exchangers for the United States Coast Guard.
Tranter UX-Series
Test Pressure: 225 psi
Plate Pack Dimensions: 1.42 min – 1.51 max
Surface Area: 6.4
200°F
MechPro Inc. provides plates and gaskets for all Tranter Plate Heat Exchanger models.
When contacting MechPro for Plate Heat Exchanger service please attempt to provide the following information:
- Equipment Tag #
- Serial #
- Drawing #
- Model
SUPERCHANGER plate corrugations are available in four patterns. Depending on the applications, the GF, UX, SX, GC and GX Series plates are used to achieve maximum heat transfer.
MechPro calculates the “A” Dimension (Plate Pack Width in Inches) for your plate packs using formulas which are in accordance with OEM specs.
SUPERCHANGER units are custom designed for each application. A drawing is supplied with each unit depicting all required dimensional data, equipment specifications, unit performance, nozzle locations and sequence of plates in the heat exchanger.