top of page

Specific Technical Advice Document

We provide written Specific Technical Advice Documents (STADs) to assess safe avoidance distances for different types of intrusive activities in offshore projects. STADs are created with ample detail not only to educate our clients on technical aspects, but also to assure contractors, insurers, and stakeholders that UXO risks tied to investigation or installation operations can be mitigated to ALARP standards. 

Orchid Haze Maritime Services

The benefits

  • They establish safety avoidance radii tailored for each unique operation.

  • Survey swath width or area can be precisely adjusted for the specific task, streamlining subsequent geophysical UXO surveys and reducing both time and costs.

  • They support ALARP safety certification and deliver technical assurance to everyone involved in each project phase.

  • Together, these services not only enhance and demonstrate project safety, but also contribute substantially to schedule efficiency and cost reduction.

Common topics in STADs relating to UXO risks include:

  • Fragmentation and shock wave effects underwater on both temporary and permanent infrastructure.

  • Calculating avoidance radii for UXO anomalies.

  • Energy factors and risks during geotechnical investigations.

  • Risks linked to various cable installation methods.

  • Hazards involved in cable repair.

  • Potential impacts on divers.

  • Mattress placement procedures.

  • Rock placement processes.

  • Boulder moving operations.

  • Jack-up leg positioning.

  • Anchoring techniques.

bottom of page