Marine Boiler Services

Expert Installation, Maintenance, Re-tubing, and Washing Services

TMT Group provides comprehensive marine boiler services for all types of shipboard boilers and heat exchangers. With extensive experience across 1,395+ vessel projects including oil tankers, LNG carriers, container ships, cruise vessels, and offshore platforms, we deliver reliable boiler services that ensure safe, efficient operation and extended equipment life. Our services encompass installation, routine maintenance, emergency repairs, re-tubing, chemical cleaning, and complete boiler overhauls.

Comprehensive Boiler Services

Our boiler service capabilities cover the complete lifecycle of marine boilers, from initial installation through decommissioning, with particular expertise in maintenance, repair, and performance optimization.

Boiler Installation Services

Professional installation ensuring optimal performance and compliance

New Boiler Installation

Site survey and preparation
Foundation alignment and leveling
Boiler positioning and securing
Structural support and anchoring
Rigging and heavy lift operations
Clearance verification for maintenance access
Thermal expansion accommodation
Anti-vibration mounting where required

Piping Connections

Steam outlet main steam line
Feed water inlet piping
Blow-down line installation
Fuel oil supply and return lines
Sampling connections
Pressure gauge and instrumentation taps
Safety valve discharge piping
Drain and vent connections

Auxiliary System Integration

Burner assembly installation and alignment
Fuel oil heating and pumping system
Forced and induced draft fan connections
Air intake and exhaust ducting
Economizer installation and ducting
Feedwater treatment system integration
Soot blower installation
Water level control and monitoring systems

Electrical and Control Integration

Burner control panel wiring
Flame detection system installation
Water level controller connections
Pressure and temperature transmitters
Alarm and safety shutdown system
Burner management system (BMS) integration
Remote monitoring system setup
Emergency stop circuits

Boiler Maintenance Services

Scheduled maintenance ensuring reliability and efficiency

Routine Maintenance

External visual inspections
Pressure gauge calibration verification
Safety valve operation testing
Water level gauge functionality checks
Burner inspection and adjustment
Fuel oil filter cleaning/replacement
Control system functional testing
Log sheet review and trending
Minor adjustments and lubrication

Preventive Maintenance Programs

Comprehensive inspection schedules
Fireside and waterside inspections
Tube thickness measurements
Non-destructive testing (NDT)
Refractory inspection and repair
Gasket and seal replacements
Control calibration and testing
Performance efficiency testing
Maintenance record keeping

Operational Optimization

Combustion analysis and tuning
Fuel-to-air ratio optimization
Excess oxygen level adjustment
Stack temperature monitoring
Efficiency calculations and benchmarking
Heat loss analysis
Load profile optimization
Energy conservation recommendations

Boiler Repair Services

Expert repairs for all boiler types and systems

Tube Repairs

Leaking tube identification (pressure test, leak detection)
Tube plug installation for temporary repair
Tube end weld repair
Tube ferrule installation
Mid-section tube welding repair
Tube support and baffle repair
Handhole and tube sheet leak repair
Emergency temporary repairs

Pressure Part Repairs

Drum shell crack repair
Tube sheet crack repair and welding
Header repair and modification
Pressure vessel weld repairs
Expansion joint repairs
Manway door gasket replacement
Studded connection repairs

Refractory Repairs

Firebrick replacement
Castable refractory repair
Ceramic fiber blanket replacement
Insulation board repairs
Refractory anchors and pins
Burner tile replacement
Expansion joint packing
Complete refractory reline

Burner System Repairs

Burner nozzle cleaning and replacement
Diffuser and impeller repairs
Ignition electrode replacement
Flame scanner cleaning and replacement
Burner air register adjustment
Fuel oil heater repair
Atomizing steam system repair
Burner mounting flange repairs

Accessory and Auxiliary Repairs

Boiler feed pump repairs
Fuel oil pump overhaul
Forced draft fan repairs
ID fan bearing replacement
Economizer tube repairs
Air heater element replacement
Soot blower mechanism repair
Water treatment equipment service

Boiler Re-tubing Services

Complete tube replacement for restored performance

Re-tubing Assessment

Tube thickness measurements (ultrasonic testing)
Internal and external corrosion assessment
Erosion damage evaluation
Vibration-induced fatigue assessment
Tube sample metallurgical analysis
Remaining life calculations
Cost-benefit analysis for repair vs replace
Re-tubing specification development

Tube Removal Process

Boiler cool-down and isolation
Internal cleaning for access
Handhole cover removal
Tube cutting inside drum
Tube extraction from tube sheet
Expanded tube cutting and removal
Tube sheet cleaning and preparation
Inspection for tube sheet damage

New Tube Installation

Material selection per specifications
Tube cutting and beveling to length
Tube insertion and alignment
Tube rolling (expansion) into tube sheet
Seal welding of tube ends
Internal surface dressing
Welded connections for headers
Support and baffle installation

Re-tubing Quality Assurance

Dimensional verification of new tubes
Material certificate verification
Tube expansion quality checks
Weld joint radiography or ultrasonics
Hydrostatic pressure testing
Leak testing at tube-to-tube sheet joints
Internal inspection through handholes
Documentation and certification

Tube Types and Materials

Carbon steel tubes for general service
Alloy steel tubes for high-temperature zones
Stainless steel for corrosive conditions
Copper-nickel tubes for economizers
Seamless and welded tube options
Special coating options for corrosion resistance

Boiler Chemical Cleaning and Washing

Professional cleaning restoring heat transfer efficiency

Chemical Cleaning Assessment

Boiler side scale and deposit analysis
Water chemistry review
Heat transfer efficiency degradation
Previous cleaning history review
Cleaning method selection
Chemical selection based on deposits
Cost-benefit analysis for repair vs replace
Safety and environmental planning

Boiler Water-Side Chemical Cleaning

Boiler isolation and draining
Temporary piping and circulation system setup
Acid cleaning for scale removal (hydrochloric, inhibited)
Alkaline cleaning for oil and organic deposits
Circulation through tubes and drums
Temperature and pH monitoring during cleaning
Neutralization of spent chemicals
Post-cleaning passivation treatment
Disposal of waste chemicals per regulations

New Tube Installation

Material selection per specifications
Tube cutting and beveling to length
Tube insertion and alignment
Tube rolling (expansion) into tube sheet
Seal welding of tube ends
Internal surface dressing
Welded connections for headers
Support and baffle installation

Boiler Fire-Side Cleaning

Soot and carbon deposit removal
Fly ash cleaning from economizer
Tube external surface cleaning
Refractory surface cleaning
Access door and inspection port cleaning
Compressed air blowing
Vacuum cleaning systems
High-pressure water washing
Manual wire brushing and scraping

Chemical Cleaning Safety

Confined space entry procedures
Acid handling safety protocols
Ventilation requirements
Personal protective equipment
Emergency response planning
Gas detection monitoring
Waste containment and disposal
Post-cleaning safety inspections

Post-Cleaning Activities

Neutralization and flushing
Passivation treatment to prevent flash rusting
Complete draining and drying
Internal inspection through all access points
Reassembly of cleaned components
Hydrostatic testing
Chemical water treatment before restart
Performance testing and efficiency verification

Boiler Hydrostatic and Operational Testing

Comprehensive testing ensuring safety and performance

Hydrostatic Pressure Testing

Mineral oil hydraulic fluids (most common)
Test pump connection and setup
Gradual pressurization to test pressure (1.5x design)
Visual inspection of all pressure parts during test
Leak detection and marking
Pressure relief and draining
Test certification and documentation

Operational Testing

Boiler dry-out and warm-up procedures
Initial firing and light-off
Control system functional verification
Safety device testing (low water cutoff, high pressure cutoff)
Flame failure safeguard testing
Automatic control operation verification
Load testing at various output levels
Steam quality verification

Performance Testing

Stack gas analysis (O2, CO2, CO, NOx, SOx)
Combustion efficiency calculations
Heat balance calculations
Feed water and fuel consumption measurement
Steam temperature and pressure verification
Blow-down rate optimization
Overall efficiency determination
Comparison with design specifications

Emergency Boiler Services

Rapid response for critical boiler failures

24/7 Emergency Response

Emergency hotline availability
Rapid mobilization of technicians and equipment
Temporary repair capabilities
Emergency spare parts availability
Coordinate with classification societies
Minimize vessel downtime
Port call emergency service

Common Emergency Repairs

Tube leak emergency plugging
Safety valve failures and replacements
Feed pump emergency repairs
Burner system failures
Control system malfunctions
Water level alarm system failures
Blow-down valve seizures
Refractory failures

Boiler Types We Service

Our experienced technicians service all types of marine boilers

Water-Tube Boilers

D-type water-tube boilers
O-type water-tube boilers
A-type vertical water-tube boilers
Bent tube designs
Straight tube designs
Single and dual drum configurations

Auxiliary Water-Tube Boilers

Fire-Tube Boilers

Scotch Marine Boilers

Single-ended Scotch boilers
Double-ended Scotch boilers
Wet-back and dry-back designs
Two-pass and three-pass configurations
Vertical fire-tube boilers
Package scotch boilers

Exhaust Gas Boilers

Special Application Boilers

Thermal fluid heaters for cargo heating
Steam generators for offshore process
Inert gas generators with boiler sections
Boilers for special industrial processes
Once-through boilers for quick response
Supercritical boilers for advanced systems

Boiler System Components We Service

Beyond the boiler pressure vessel, we service all associated systems

Feed Water Systems

Boiler feed pumps and drives
Feed water heaters and deaerators
Check valves and isolations
Feed water regulators and controls
Feed water treatment systems
Storage and surge tanks

Fuel Oil Systems

Fuel oil pumps and heaters
Fuel filters and strainers
Fuel pressure regulators
Burner fuel supply piping
Fuel oil flow meters
Viscosity control systems

Combustion Air and Exhaust Systems

Forced draft fans and motors
Air inlet filters and silencers
Combustion air ducting
Economizer and air heaters
Induced draft fans
Exhaust stacks and uptakes
Dampers and louvers

Control and Safety Systems

Burner management systems (BMS)
Programmable logic controllers (PLC)
Water level control systems
Pressure and temperature controls
Flame safeguard systems
Safety interlocks and alarms
Emergency shutdown systems
Data logging and monitoring

Water Treatment Systems

Chemical dosing pumps
Phosphate treatment systems
Oxygen scavenger dosing
pH control systems
Conductivity monitoring
Water testing equipment
Sampling and blowdown systems

Safety and Compliance

Regulatory Standards

We ensure compliance with all applicable standards

SOLAS - Safety of Life at Sea boiler requirements
Classification Society Rules (Lloyd's, DNV, ABS, BV, etc.)
ASME Boiler and Pressure Vessel Code
Flag state regulations
Port state control requirements
ISM Code - International Safety Management
Local environmental regulations

Safety Procedures

Boiler Safety Protocol

Lockout/tagout procedures for maintenance
Confined space entry permits
Hot work permits for welding and cutting
Gas-free certification before entry
Continuous atmospheric monitoring
Emergency rescue equipment standby
Post-maintenance safety inspections
Safety valve annual testing

Exhaust Gas Boilers

Special Application Boilers

Thermal fluid heaters for cargo heating
Steam generators for offshore process
Inert gas generators with boiler sections
Boilers for special industrial processes
Once-through boilers for quick response
Supercritical boilers for advanced systems

Inspection and Certification

Annual internal boiler inspections
Pressure vessel certification renewals
Safety valve testing and certification
Non-destructive testing (UT, RT, MT, PT)
Thickness measurement surveys
Material certification for repairs
Classification society attendance
Official logbook entries

Industries and Vessel Types

Our boiler services support all vessel types

Oil and Chemical Tankers :
LNG/LPG Carriers :
Container Ships :
Cruise and Passenger Ships :
Offshore Platforms :
Naval Vessels :
Cargo and Bulk Carriers :
Specialized Vessels :

Cargo heating boilers, inert gas systems
High-efficiency steam generation for propulsion and cargo
Auxiliary boilers for accommodation and heating
Large capacity boilers for hotel loads
Process steam and power generation
High-reliability military specification boilers
General purpose auxiliary boilers
Custom boiler systems for unique applications

Why Choose TMT Group for Boiler Services?

Extensive Experience
Skilled Technicians :
Comprehensive Services :
Emergency Response :
Quality Repairs :
Complete Re-tubing :
Chemical Cleaning :
Global Service :

Boiler service across 1,395+ vessels of all types
Certified boiler technicians and welders
Installation through decommissioning
24/7 availability for critical failures
Classification society approved repair procedures
In-situ or workshop tube replacement
Professional cleaning with environmental compliance
Operations across Asia, Europe, and Middle East

Get Started with Your Boiler Service Needs

Our experienced boiler service team is ready to provide installation, maintenance, repair, re-tubing, or cleaning services for your vessel’s boilers. Contact us today to discuss your requirements or arrange emergency service