Maintain production, protect integrity, and replace bolts safely without shutting down your operations.
Hot bolting on flanged joints is a critical maintenance task that requires confidence in the process, equipment, and team. Hydratight provides safe, engineered hot bolting services for ASME, API, and NORSOK flanges, helping operators maintain integrity while keeping assets online. Our specialist engineers use the purpose-built MorSafeâ„¢ clamp system to replace bolts under pressure without compromising containment.
Lightweight, compact, and ASME-compliant, MorSafe enables fast, controlled bolt removal—even in restricted spaces or with uncertain bolt conditions. Every job follows rigorous risk assessment, proven procedures, and certified equipment, ensuring critical work is completed safely, efficiently, and right the first time.
Discover the key advantages that make our hot bolting services reliable, efficient, and optimized to your project needs.
All work follows strict risk assessments and proven procedures.
Our ASME-designed clamp keeps the joint secure during bolt removal.
Work continues without shutting down production.
Fits almost any flange type, size, and pressure rating.
Each clamp is tested to 1.5× design pressure.
Our technicians bring decades of hot bolting expertise.
Our Assessment & Engineering Review
Our team evaluates flange type, operating conditions, bolt condition, and access constraints. A detailed risk assessment and method statement are created for full transparency and control.
Clamp Installation
The MorSafeâ„¢ segmented clamp is assembled around the flange. Backstops isolate clamp pre-load, so no additional force is transferred to the gasket or flange.
Controlled Bolt Removal
Using approved cold cutting or removal tools, bolts are removed and replaced individually while the clamp maintains joint integrity and mitigates unknown bolt and gasket conditions.
Verification & Torquing
New bolts are torqued to specification, all components are checked, and containment stability is confirmed before clamp removal.
Final Reporting
You receive a detailed completion report outlining the procedure, results, and recommendations for future maintenance planning.
With decades of global experience in online leak sealing, hot bolting, and hot tapping, we deliver safe, reliable, and fully certified live repair solutions. Our MorSafe™ and MorSeal™ systems are independently verified by DNV, Lloyd’s, and TÜV, ensuring every repair meets the highest standards. We maintain operations without shutdowns, provide full engineering assurance with traceable documentation, and offer a leak-free guarantee, giving you complete confidence in every live service modification.
Petrochemical
Power Plants
Oil & Gas
Utilities and Manufacturing
Learn how our solutions keep operations safe, efficient, and productive.
Discover what our clients say about the quality, reliability, and results we deliver.
Their testimonials showcase the trust and confidence we bring to every project we undertake.
Hydratight delivered our objective leading to leak free start-up of the plant by implementing best practices, using the right equipment, employing trained and highly competent people, and managing all these effectively using a locally based team.
Construction Director at Oil & Gas Solutions Provider
The objective of using Hydratight was to achieve a leak free start-up and it was achieved. We have no hesitation to record their commendable performance and recommend them on other requiring bolted joints management.
Turnaround Manager
at Petrochemical Company
The Hydratight personnel executed their on-site machining duties with skill, professionalism, flexibility and cooperation at all times. Their bolt tensioning personnel completed the de-tensioning, inspection, and tensioning of all of the ANSI 2500...
Shutdowns and Maintenance Manager, Petroleum Company
Hydratight’s solution to our problem was professionally handled and implemented quickly… production could continue without output being compromised, while the leak was permanently rectified.
Director of Operations, Total E&P Congo
We tasked you with a difficult application and timeline. Even though we did not have to perform the work, you had everything ready and tested.
Maintenance Manager, Nuclear Power Plant (US)
