Nireekshan Engineers & Surveyors

performance Metrics

Underwater CCTV Inspection
1950 +
Underwater Hull Cleaning
0 +
Clients
450 +

OUR SERVICES

diving (1)

DIVING/UNDERWATER SHIP SERVICES

We specialize in comprehensive underwater services to meet the diverse needs of the maritime industry. Our offerings include Underwater Live CCTV Videography for ship classification purposes, allowing detailed inspections of rudder, pintle clearance, and propeller shaft wear-down clearance. We also provide sea chest and overboard valve blanking and unblanking to ensure operational safety. Our expertise extends to cold repairs for hull cracks, holes, and dents, as well as underwater thickness gauging measurements (UW UTG/NDT) to assess structural integrity.

Additionally, we handle the removal of fishing nets, ropes, and tyre fenders from propellers, ensuring optimal vessel performance. Our services include underwater blanking using steel mats, as well as welding and cutting for repairs. We also offer hydraulic hull cleaning and propeller polishing, helping to maintain vessel efficiency and reduce drag. With a focus on precision and safety, we deliver solutions tailored to the challenges of underwater maintenance and repair.

port (1)

PORT/WHARF/PILES, FENDERS AND ITS UNDERWATER STRUCTURES MAINTENANCE

We offer a wide range of specialized services for wharf and underwater structure maintenance and analysis. Our expertise includes wharf and pile inspection using Non-Destructive Testing (NDT) and the rejuvenation of damaged wharves and piles through advanced pressure grouting techniques. We conduct underwater inspection and cleaning to ensure the structural soundness of submerged components.

Our services also encompass underwater core drilling and pile cutting at seabed levels, as well as bathymetry and depth measurement surveys to assess underwater terrain and ensure navigational safety. Additionally, we provide dredging services, including operations near wharf areas, and undertake wharf maintenance and structural integrity analysis, utilizing techniques such as Ultrasonic Pulse Velocity (UPV) testing and Cathodic Protection (CP) testing to guarantee long-term durability and reliability.

buoy (1)

BUOY AND NAVIGTAIONAL AIDS MAINTENANCE

We provide comprehensive Annual Maintenance Contracts (AMC) for channel buoys, marker buoys, and fairway buoys to ensure seamless navigational aid. Our services include the retrieval, development, and maintenance of solar lanterns installed on navigational buoys, enhancing their efficiency and sustainability. Additionally, we specialize in leading, breakwater, and jetty light maintenance, ensuring optimal functionality and safety.

Our expertise extends to fender maintenance, including removal and refixing for secure mooring operations. As an authorized manufacturer of Wave Powered Navigational Buoys (WPNB) under the “Make in India” initiative in collaboration with NIOT, we deliver innovative and reliable solutions tailored to modern maritime requirements.

offshore-platform

OFFSHORE DIVING PROJECTS

Our expertise encompasses a wide range of underwater services tailored for critical infrastructure projects. We specialize in intake and outfall pipeline laying for thermal power and desalination plants, ensuring precise alignment and functionality. Our capabilities include underwater repair and maintenance of pipelines, employing advanced techniques such as geo-textile wrapping to enhance durability. We also excel in fixing pipelines into exact underwater trenches for optimal positioning.

Additionally, we provide underwater cable laying and burying, extending up to 200 meters from shore and securely placing cables one meter below the seabed. Our services extend to inspection, maintenance, and repair of offshore structures, as well as Single Point Mooring (SPM) maintenance and repair for seamless operations. We conduct specialized diving work at atomic power plants and perform PLEM inspections for chemical plants to ensure safety and efficiency.

To support these operations, we collaborate with premier institutions in Chennai for design, drawings, and bathymetry surveys, delivering cost-effective and reliable solutions tailored to project requirements.

hydraulic-crane

HYDRAULIC EQUIPMENTS

  • Ship Hydraulic Equipment and Cranes
  • Industrial Hydraulic Equipment’s
  • Hydra Crane System
  • Hydraulic Equipment Design Development
  • Fabrication for Special Purpose
  • Hydraulic Pumps and Motors
  • All Hydraulic Equipment Refurbishment and Sales
intervention

HYPERBARIC INTERVENTION SUPPORT SERVICES

  • Compressed Air Work EPB-TBM
  • TBM Air Lock and Support Personnel
  • Hyperbaric Intervention Equipment’s Maintenance
  • Medical Locks -DDC Supply and Maintenance
  • CAW Worker and Training Awareness
  • Hyperbaric Workers and Mechanics
  • Compression and Decompression for CAW Workers

ACHIEVEMENTS

Our expertise in underwater engineering and marine construction is showcased through a diverse range of projects. For the VA Tech Wabag 100 MLD Desalination Plant in Nemili, Chennai, we successfully handled the sinking, live tracking, and positioning of intake and outfall HDPE pipelines measuring 1600/750mm in diameter and 1050/1200 meters in length for Metro Water. We also completed the diffuser installation for the Sea Water Intake Well for Coastal Energen in Tuticorin.

Our capabilities extend to underwater cable operations, where we executed the laying and burying of cables 200 meters from the shore and 1 meter below the seabed for both TYCO-VSNL and Reliance Jio-MCC underwater fiber optic projects. Following the devastating Vardha Cyclone, we played a crucial role in re-positioning channel buoys for vessel movements, enabling port operations to resume within 24 hours.

Innovative techniques are at the core of our services. We utilized “Cofferdam” technology to insert permanent fixtures on a ship’s hull without the need for dry docking. In another challenging operation, a damaged pile under a wharf, measuring 1300mm in diameter with a steel liner of 10mm thickness and weighing 22 metric tons, was precisely cut using “Diamond Chain Sawing Technology” at a depth of 12 meters and removed as a single piece. Additionally, our team successfully retrieved a ship’s anchor along with 300 meters of chain and re-fixed it to the ship without external crane assistance after the tsunami.

These projects highlight our commitment to delivering innovative, efficient, and timely solutions in complex marine environments.