Centrifugal Compressors

HMP is your partner for complete overhauls, repairs, reconditioning, upgrades, revamps and relocations of centrifugal compressors, both on site and in one of our workshops.

Product range:

• Axial compressors
• Radial compressors – splitline and barrel type
• Screw compressors
• Bull gear type compressors
• Integrally geared compressors

Brands serviced include ATLAS COPCO, BORSIG – DRESSER RAND – DEMAG – ELLIOTT – HITACHI – HOWDEN – KOBE – MAN TURBO – MITSUBISHI – NUOVO PIGNONE – SIEMENS – STORK DELAVAL – SULZER – THOMASSEN

Workshop Activities

• Complete overhauls of centrifugal compressors
• Destacking of compressor rotor
• Repairs to rotors, impellers and diaphragm vanes
• High quality parts either through OEM or reverse engineering
• Low and high speed balancing
• Impeller spin test
• Application of suitable coatings for corrosion protection, fouling reduction and improved efficiency
• Condition monitoring systems

Steam Turbines (Single-stage)

Single stage steam turbines can be found at oil refineries, fertilizer plants and (petro) chemical plants and as a driver for pumps, blowers and other rotating process equipment.

HMP has all the expertise needed for complete overhauls, repairs, reconditioning, upgrades and modifications of single stage steam turbines, regardless of type or make. In addition, HMP also offers spare parts, from seals to rotors and to complete units.

HMP services all brands and manufacturers including: Bellis & Morcom, Coppus, Creusot-Loire, Dresser-Rand, Elliot, Fives, Fuji, Hiro Zoki, Hitachi, Howden, Kühnle, Kopp & Kausch (KK&K), Nadrowski, Peter Brotherhood, Shin Nippon, Siemens, Terry, Tuthill, Worthington.

Steam Turbines (Multi-stage)

HMP is the one-stop-shop for steam turbine maintenance. We have all the expertise needed for complete overhauls, repairs, reconditioning, upgrades, revamps and relocations of steam turbines, regardless of type or make. Our rotorshop performs all aspects of rotor-, diaphragm & blade carrier repairs, ranging from NDT inspections to high speed balancing.

Servicing all types of axial and radial steam turbines:

• Impulse turbines
• Reaction turbines
• Condensing steam turbines
• Non–condensing steam turbines

HMP services all brands and manufacturers including: ABB, AEG Kanis, Alstom, Ansaldo, ASEA Stal, BBC, Blohm & Voss, Coppus, Delaval, Dean Hill, Doosan Skoda, Dresser-Rand, Elliott, Fincantieri, Fuji, General Electric, GHH, Hiro Zoki, Hitachi, Howden, Kühnle, Kopp & Kausch (KK&K), MAN Turbo, Mitsui, Nuovo Pignone, Peter Brotherhood, Rateau, Siemens, Stal-Laval Turbin, Sulzer, Thermodyne, Tuthill, Worthington.

• Inspections and overhauls - full visual check, disassembly (as required), measurements and report with recommended actions
• Parts supply - HMP offers new, OEM, reconditioned and reverse engineering of obsolete items
• Modifications and upgrades - HMP provides a range of proven services to address common steam turbine issues that improve efficiency, reduce downtime, prevent damage to key components and reduce emissions to atmosphere
• Full range of workshop activities for maintenance, repair and replacement
• Engineering services - upgrades, re-rates, de-rates, revamps
• Field services - minor and major overhauls, trouble-shooting, supervision, installation, maintenance, emergency response

Axial Turboexpanders

HMP has a wealth of experience in overhauling and repairing axial turbo expanders:

• Multi stage axial turbo expanders
• Single stage axial turbo expander wheels directly connected to axial compressor – can be in combination with an abradable sealing upgrade to the compressor for increasing efficiency

Turbo expander services from routine inspections and minor servicing to complete overhauls, including:

• Re-blading
• Complete new rotor manufacturing
• Emergency interventions and repairs
• Spare parts manufacturing including labyrinths, radial inflow expander wheels, diaphragms, tie bolts, bearings and casings
• Overlay welding and laser cladding of stub shafts
• Mechanical re-design
• Structural redesign
• Low and high speed balancing
• Site services including installation, start-up support, vibration measurements and trouble-shooting

Inspections are carried out and reported according to API 687 (Rotor Repair Phase 1 and 2) and API 617 (Axial and Centrifugal Compressors and Expanders-Compressors – Chapter 1&4) standards.

Radial Turboexpanders

Parts and servicing for all brands and models of radial turboexpanders. Incorporates the knowledge and expertise of Turbine Europe, acquired by HMP in 2022, HMP's extensive engineering and workshop capabilities with Howden technology and digital services.

• Expander/Compressors with all types of oil bearings
• Expander/Compressors with Active Magnetic Bearing (AMB)
• Expander/Generator
• Expander/Dyno (dyno wheel expanders)

Services

• Field service
• Overhauls - onsite and in the workshop
• Upgrades and redesign
• Re-engineering and rerating for changes in process conditions
• Troubleshooting
• Repairs
• Upgrade of instrumentation & controls (for oil and AMB turbo expanders)
• Training
• Emergency response

Serving customers across Europe, the Middle East, Africa, Asia and South America.

Generators

HMP boasts decades of world-class expertise in repairing and servicing the broadest range of generator types:

• Salient pole and turbo rotors
• Emergency Power Units
• From small (kVA) to large (MVA) power
• High voltage and low voltage
• Air cooled to hydrogen cooled

Services range from standard inspections, revision and repair of generators to full (re)winding and can be performed in the workshop or onsite. The scope of work is determined in advance and through consultation with the customer.

Typical minor inspection procedures:

• Disconnecting equipment and electrical insulation measurements
• Check of temperature probes, heating system and instrument transformers
• Visual inspection
• Inspection of the coolers
• Check of rotating diodes, slip rings and excitation system
• Check of grounding brushes

Major overhauls can include the following tasks:

• Detailed electrical measurements
• Inspection the the winding insulation quality
• Check and alignment of couplings
• Measurements and inspections of bearings
• Overhaul of the coolers
• Extraction of the rotor
• High pressure or cryogenic cleaning
• Checking of the stator core
• Antiflash painting
• Resizing slip rings
• Dynamic balancing of rotor
• Maintenance of connected DC excitation machines
• Operational tests onsite

Testing Facilities

HMP is fully equipped to undertake rewinding of rotors and stators. As part of the process rotors and stators will be fully assembled, bearings lubricated and generator cooled.

During unloaded testing vibrations, bearing temperatures and electrical parameters are monitored.

HMP is equipped to perform the following specialised measurements on site and in-house:

• 1 kHz winding inductance test
• Dielectric absorption ratio
• Step voltage test
• Tangent delta – 50Hz and 0.1 Hz
• Partial discharges – 50 Hz and 0.1 Hz
• Recurrent Surge Oscillation (RSO)
• Pole equality test
• Check no-load and short circuit curves

Rotor Repairs

Inspection, balancing, repair, refurbishment and testing of turbomachinery rotors in accordance with API 687 standards.

HMP services rotors for axial compressors, radial compressors, steam turbines and expanders.

• Any brand or make
• Any condition
• Any age
• Competitive pricing
• Short delivery times
• Upgrades and revamps

API 687 inspection includes:

• Rotor cleaning (glass bead blasting)
• Visual inspection
• Mechanical and electrical run out
• Non Destructive Testing
• Reporting and repair proposal

HMP facility is equipped with a state-of-art Schenck high speed balancing machine that balances rotors at speeds up to 30.000 RPM in accordance with API684, API617 or ISO11342 standards.

Rotor repair capabilities include:

• Rotor journal repairs by welding, laser cladding or HVOF coating
• Spare parts: manufacturing of new impellers, shafts, blades, diaphragms, blade carriers, etc
• Reblading
• Replacement of seal strips
• Low and high speed balancing with overspeed test
• Impeller spin test
• Coating applications on compressor impellers for corrosion protection, fouling reduction and increased efficiency

AC/DC Motors

HMP has built up decades of world-class expertise in repairing electric motors. We provide services on all types, sizes and brands of electric motors, including:

• AC and DC
• Low, medium and high voltage electric
• Ex motors
• Submerged
• Traction
• Stirrer/LDPE Autoclave reactor motors
• High temperature and high frequency electro motors
• Canned motor pumps

Blowers

Service and repair of all types of blowers including vacuum blowers, lobes, screws, centrifugal and high vacuum boosters, regardless of manufacturer and model.

Services range from standard inspections and repairs to complete overhauls.

Scope of work can include:

• Cleaning & steaming
• Sandblasting
• Machining of parts (including bearing housings, rotors)
• Balancing of rotating parts
• Coating of rotating parts
• Manufacturing of seal sleeves
• Interior graphite treatment
• Assembly
• Timing gear adjustment
• Coating of exterior

On completion of all work blowers are driven for 1,5 hours to check functionality.

Fans

Service and maintenance of multiple fan types including centrifugal, axial, fan units (comprises fan and motor), directly driven, chain driven, belt driven.

Scope of work can include:

• Cleaning and steaming
• Sandblasting
• Machining of parts, including bearing housings and rotors
• Balancing of rotating parts
• Coating of rotating parts
• Assembly
• Exterior coatings
• Alignment(motor-fan combinations)

Gearboxes

Standard inspections, routine maintenance, repairs and complete overhauls of gearboxes including planetary and bull gear types.

Inspection procedures

• Visual inspection
• Axial clearances measurement
• Gear tooth clearances measurement
• Disassembly + visual inspection of parts
• Dimensional measurement
• Blueprint
• Oil sampling and check

Scope of work can include:

• Cleaning and steaming
• Sandblasting
• Machining of parts, including bearing housings and rotors
• Balancing of rotating parts
• Assembly
• Exterior coatings
• Final testing

GEMEX Belt Tensioning System

The Gemex belt tensioning system is a hydraulically adjustable and mechanically lockable motor platform, which allows technicians to safely check and, if necessary, to adjust the belt‘s tension in the easiest and most efficient way. In approximately 5 minutes your belts are replaced, no realignment is needed. It will reduce your maintenance & energy costs and increase the life cycle of your equipment.

The Gemex hydraulic belt tensioning system is designed to be compatible with all designs and types of existing belt tensioning systems, is easy to use and comes with many benefits:

Improved Safety

• Easy Access
• Belt is not under tension while being replaced
• Online adjustable belt tension
• Only tools required are a hydraulic pump and hammer hydraulic pump and hammer

Energy Saving

• 5 to 10% energy savings, thanks to better alignment
• ROI between 1 and 3 years, depending on specific application (the ROI can be less than 1 year if traditional tensioning systems require more than 1 belt change per year)

Ease of Maintenance

• Belt replacement within 5 minutes
• No re-alignment required
• Easy access
• Simple procedure
• No special training necessary

Suitable for all Applications

• Installation possible on every existing frame, IEC or NEMA motor size
• Suits all types of belts (V-belts, timing belts and more)
• Horizontal/vertical mounting position
• Standard GEMEX applications or custom made
• All industries that use belt applications

Since 1998, over 10000 Gemex systems have been installed worldwide in all industries that use belt driven applications, including chemicals, petrochemicals, pulp and paper, food, energy, pharmaceutics, steel, and more. Typical examples include centrifugal fans, fin-fans, cooling banks, cooling towers, pumps, compressors, conveyors, centrifuges, mixers and crushers. In addition, many belt tensioning systems have been customized to fit the customer’s needs and particular environment.

Additional services are available on request

• Free assessment of all your belt driven applications, including maintenance advice on related rotating equipment
• Free optimal belt-tension calculation for any Gemex system
• Gemex training for your local technicians in installation and maintenance/service
• Gemex installation teams available for on-site installation
• Gemex service parts available, including delivery of pulleys, belts and other related items

Pumps

Service, maintenance, overhaul and repair of a broad range of pumps, including:

• Vacuum
• Centrifugal
• Multi stage
• Boiler feed
• Deep well
• Booster
• Canned motor
• Barrel
• Rotary vane

Services for any brand or manufacturer, including ACEC, Alfa Laval, Allweiler, Andritz, Bornemann, Bran + Luebbe, Byron Jackson, David Brown Pumps, DB Union, Dresser, Ebara, Ensival-Moret, Finder, Flowserve, Gardner Denver, Habermann, Hayward Tyler, Herborner, Hermetic, Houttuin, Ingersoll-Rand, Johnson, KSB, lowara, Maag, Metso, Mitsubishi, Nash, Roots, Ruhrpumpen, Sihi, Sterling, Sterling, Stork, Sulzer, Torishima, Victor, Vogel, Vogelsang, Wedapump, Weir, Worthington.

Services can include:

• Cleaning & steaming
• Sandblasting
• Machining of parts, including bearing housing and rotors
• Balancing of rotating parts
• Coating of rotating parts
• Manufacturing of seal sleeves
• Assembly
• Pressure test with water, diesel or oil (depending on pump application)
• Exterior coating
• Final testing

Shredders

HMP is your partner for the overhaul and repair of industrial shredders, cutters and breakers (shear shredders, 1 2 3 and 4 shaft, reducers, hammermills) from various industries, including scrap metal recycling, tire recycling, waste treatment, meat processing, construction, mineral extraction and mining.

Supplying high quality Hardox® wear parts for optimum abrasion resistance - shear blades, rakes, wear plates, liner plates. Other high quality parts include shafts, couplings, bearings, gearboxes and electric motors/p>

Scope includes:

• Cleaning
• Sandblasting
• Welding
• (Re)bushing of shafts
• Balancing of rotating parts
• Protective coatings
• Assembly
• Testing and final report