ASOG DP, CAM & TAM – Operational Activity Planning

The methods described in the Operational Activity Planning Document apply to all sectors of the offshore industry, including:

• Drilling
• Project
• Construction
• Supply

The processes are generally applied to dynamic positioning vessels, but they can also be used by non-DP vessels.

Operational activity planning includes:

CAM – Critical Activity Mode

Is the machinery and equipment configuration that will normally be used for the majority of Dynamic Positioning (DP) operations. It represents the vessel’s most fault-tolerant setup, with systems arranged to provide the highest level of redundancy and reliability. Operating in CAM helps ensure that the vessel can maintain position following a single fault or failure, making it the preferred configuration for safety-critical offshore activities.

TAM – Task Appropriate Mode

Is a machinery and equipment configuration that does not provide the same level of fault tolerance as CAM but may still be suitable for specific operations. The appropriateness of a TAM configuration will depend on the nature of the task, the associated risks, and the operational environment. Guidance on TAM helps operators identify when a reduced-redundancy setup may be acceptable, allowing activities to be carried out safely while maintaining operational flexibility and efficiency.

ASOG DP – Activity Specific Operating Guidelines

Activity Specific Operating Guidelines (ASOG), define the variable limits in equipment and operational parameters for a specific job. A vessel will usually have several of these, for use in different areas and for different work. We supply a vessel specific general ASOG in editable format, to enable the crew to modify it as appropriate.

Following IMCA recommendations, the documents are presented in an easy to understand tabular format, for easy reference. The ASOG is generally printed and copies kept at the DP control station and engine control room, so it can be readily used as a decision support tool.

Related Services

The following related services are also offered by Vassallo Associates:

FMEA (Failure Mode Effect and Analysis)

An FMEA study is available from Vassallo Associates, for the following:

• New Vessels
• Conversions
• Upgrades from DP class 1 to DP class 2
• Re-write for existing vessels to reflect its current equipment or to upgrade an old FMEA

DP Operations Manual

All DP vessels that need to have an FMEA also require a vessel specific DP Operations Manual. Vassallo Associates can write and supply this document either at the same time as an FMEA, or independently.

DP Trials

Annual DP trials which are required every year, within 3 months plus or minus, of the original FMEA proving trials anniversary date.

Periodic DP trials, which are conducted within 5 years of the original FMEA proving trials, and every five years subsequently.

We operate from offices based in London and Malta, however, we can travel nationally and internationally to provide client support.