Embed Size (px)
DESCRIPTION
GMA offers a range of integrated services for heat exchangers, from novel non-destructive testing methods and failure analysis to cleaning and application of dedicated protective coatings specific for tubes, tube inlets, tubesheets and waterboxes.
Citation preview
EXPERTS IN HEAT EXCHANGER & CONDENSER SERVICES
GMA s.r.l. is an ISO 9001 registered company, which has been on the market for more than 20 years. It deals with anti-corrosion coatings for the prevention and elimination of corrosive and erosive phenomena on power equipments, especially in condensers and heat exchangers. It owns patented technologies for internal tube coating and for restoring the mechanical features of elements weakened by corrosion, by means of composite wrapping. GMA offers a range of integrated services for heat exchangers, from novel non-destructive testing methods and failure analysis to cleaning
and application of dedicated protective coatings specific for tubes, tube inlets, tubesheets and waterboxes. The company is located in North Eastern Italy, and it covers an area of 8000 square meters; in addition to warehouses and workshops it includes a technologic laboratory for metallographic analysis and a classroom for the continuing education and training of our technicians. Our corporate policy is based on providing a high quality service by meeting our customers’ demands on time, in a transparent, reliable way.
THE COMPANY
INdusTrIEsPetrol chemicalNuclear power generationThermal power generation Refinery
- Qualified and constantly trained staff- Turnkey and worldwide work- Sole representative for all services- Quality and guarantee controls- Problem analysis and optimal customized solutions- Patented systems- Research laboratory- Respect of deadlines- Environmentally friendly solutions and observance of safety rules
Chemical Metallurgy Desalination
WHY CHOOsE GMA?
NONdEsTruCTIVE TEsTING
Videoendoscopic inspections of tubes inner surface.•Customized surveys and quotations.•APR (Acoustic Pulse Reflectometry), an innovative non-•destructive testing technique, is based on the analysis of reflections from a monodimensional acoustic wave generated into the tube.Non-destructive testing of straight and curved tubes, made •of any magnetic and non-magnetic material.Fast inspection: less than 10 seconds per tube.•
Detects leaks, total and partial blockages, erosion and •pitting.Suitable for oval, square, finned and spiral tubes and •serpentines from 9/16” diameter.Immediate visualization of results.•Digital data storage for future examinations and •comparisons.Customized surveys and cost estimates.•
GMA has a long experience in the field of failure analysis, especially in the heat exchanger sector.We possess the knowledge and instruments to detect the causes of corrosive phenomena.
HEAT EXCHANGErs ANd CONdENsErs HYdrOMECHANICAL CLEANING
Removes all kinds of sediments (limescale, mollusc, silt, •etc.).Use of inserts ensures full-length cleaning of the tube.•Improves exchanger efficiency by restoring the heat transfer •rate.
Applicable to metal and coated tubes.•Environment friendly.•Fast: 15,000 tubes can be cleaned in as little as 48 hours.•
Cylindrical cleaners propelled by pressurized water travel along the tube, ploughing deposits in their wake.
HIGH THICKNEss COATING OF TuBE sHEETs
Restores damaged plates and stops corrosion caused •by cavitation or battery effect due to the employment of incompatible materials.Appplicable to tanks, pipes and valves, with thickness •suited to the criticality of the situation.Restores the integrity and water tightness of plates corroded •or damaged from incorrect expanding operations.
Insulation of the plate from the coolant and disruption of •the corrosion-inducing electrical circuit.Streamlined inlet profile for reduced cavitation also •improves the performances of continuous cleaning systems (Taprogge, Klump & Koller, CQM, etc.).
Restores and protects inlets damaged by corrosion, erosion •and impingement.Solves problems related to overly fast flow, cavitation, •turbulence and abrasive particles in suspension.Returns the inlet to optimal hydrodynamic conditions.•
Gradually decreasing coating thickness does not exhibit the •problems related to plastic and metallic inserts (cavitation at insert end; galvanic coupling).
TuBE INLETs COATING
INTErNAL surFACE COATING OF TuBEs
Phencote HR60 Tubelining is a fast and durable solution to •any internal tube surface problemPrevents damage caused by fouling, all kind of corrosion, •erosion and cavitationSuitable for immersion in all kind of water services•Resin polymer is 100% VOC free and certified for use in •drinking waterFast application (20 m/s) from 30 µm up to 250 µm by our •patented semi-automatic machineDifferent film thicknesses available upon customer •request
Compact machinery for easier accessibility through •manholesInternal diameter range from 15 to 80 mm and tube length •to 25 mTime of application: within duration of a normal maintenance •outageEndoscopic controls, DFT and holiday testing ensure •complete coating efficiencyStudies and tests demonstrate Phencote coating to have •an overall beneficial effect on heat exchange rate
A coated exchanger keeps a high degree of efficiency, it needs fewer cleaning interventions and it is not subject to leaks.
10 reasons to use Phencote internal coating system
1.Immediate termination of all corrosion processes
2. Long-term solution for exchangers both new and in service
3.Multiple recoatings possible for an effective service life extension
4.Increase in heat transfer efficiency and condenser vacuum
5.Overall increase in power output through improved plant performance
6.Improved fouling resistance with reduction in number and duration of cleaning outages
7.Cold-work technique safe for the exchanger, the plant and the personnel
8.Cost-effective alternative to retubing - 50% faster, 30% cheaper
9.On-site application by qualified personnel
10.Testing according to standard ASTM D5162-08 guarantees 100% surface coverage
Request extra information about heat transfer at: [email protected]
BEFOrE
HOW IT WOrKs:sTEP BY sTEP CONdENsEr rEBuLdING WITH PHENCOTE sYsTEM
Heat exchangers type “Carrier” condenser - cooler. Steel Tube sheet CuNi 90\10 Tubes
Problems: tube sheet corroded with leakage from expansion, fouling and scale deposits inside the tubes. Gritblasting operation tube sheet after gritblasting.
Plugging positioning of special plugs with anticavitational profile. Primer application.
Application of Phencote 2000 by spatula and leveling
Full-length internal coating by patented application procedure, spraying 80 µm of HR60TL over 360°.
Tube ends protection against cavitation: inlets receive two additional coating layers to a length of 150 mm.
Before and after: extend your equipment life with Phencote!
TuBE surFACE BEFOrE LINING
TuBE surFACE AFTEr LINING
AFTEr:
sPrAY-NOzzLE IN ACTION
durING:
GMA srlZona Industriale via Rosa Agazzi, 7 34079 Staranzano (GO) ITALY tel. +39 0481 711 257 fax +39 0481 481 735 www. gma-tech.com [email protected]
DES
IGN
NEW
PRO
JEC
TS.I
T
