county government

sheetpile bulkhead inspection & NDT

Project Overview

Provided commercial diving inspection and non-destructive testing services for a county government sheet pile seawall structure. Operations focused on assessing underwater steel condition, identifying corrosion, measuring remaining wall thickness, and documenting structural conditions to support maintenance planning and asset life-cycle decisions.

Scope of Work

• County government infrastructure inspection

• Sheet pile seawall condition assessment

• Underwater non-destructive testing

• Steel thickness measurement

• Corrosion and section-loss evaluation

• Visual inspection and documentation

• Marine infrastructure assessment

• Inspection reporting support

Services Performed

• Diver inspection of submerged sheet pile seawall sections

• Visual condition assessment of steel sheet piles

• Identification of corrosion, pitting, scaling, deformation, and section loss

• Inspection of seams, interlocks, joints, wales, tie-back connection areas, and splash-zone conditions

• Removal of marine growth and surface buildup at test locations

• Surface preparation for accurate testing points

• Ultrasonic thickness testing using a Cygnus gauge

• Micrometer verification where accessible and applicable

• Measurement and documentation of remaining steel thickness

• Mapping of test locations and condition findings

• Photo and video documentation of underwater conditions

• Reporting support for repair recommendations and maintenance planning

Equipment & Tools Utilized

• Surface-supplied diving systems

• Diver communications systems

• Cygnus ultrasonic thickness gauge

• Micrometers and measuring tools

• Scrapers and cleaning tools

• Hydraulic and pneumatic hand tools

• Inspection cameras and video documentation equipment

• Underwater lights

• Survey and positioning equipment

• Marking and layout tools

Key Project Elements

• County Government Project

• Sheet Pile Seawall Inspection

• Non-Destructive Testing

• Ultrasonic Thickness Testing

• Cygnus Gauge Measurements

• Corrosion Assessment

• Steel Section Loss Evaluation

• Marine Infrastructure Inspection

• Underwater Condition Documentation

• Asset Integrity Assessment

• Maintenance Planning Support

Safety & Quality Control

Inspection work was performed using controlled dive procedures, pre-dive planning, test location tracking, equipment checks, and documentation protocols. Measurements and visual findings were recorded to support accurate condition assessment, repair planning, and long-term seawall maintenance decisions.

See project photos below.