Site Management Flashcards
7 cards from real DPO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Site Management flashcards as text
When approaching a fixed installation in DP mode, what is the standard protocol before entering the 500-meter exclusion zone?
Answer: Obtain permission from the installation's Offshore Installation Manager (OIM)
IMCA and industry standards require the DP vessel master to obtain explicit permission from the OIM before entering the 500-meter safety zone around any fixed installation.
A site-specific risk assessment for DP operations must be reviewed and updated when:
Answer: There is a significant change in environmental conditions, scope of work, or vessel status
Risk assessments are living documents that must be updated whenever the operational environment, workscope, or equipment status changes materially.
During site management, what is the primary purpose of defining a 'worst-case failure' mode before operations begin?
Answer: To determine the vessel's capability envelope and whether DP can safely hold position if that failure occurs
Identifying the worst-case failure (WCF) lets the crew verify that DP has sufficient redundancy to maintain position after that failure without endangering personnel or assets.
A guard vessel assigned to a DP construction site is primarily responsible for:
Answer: Controlling vessel traffic and warning approaching ships away from the exclusion zone
The guard vessel's primary role is traffic control — intercepting and redirecting vessels that may encroach on the safety zone around the operation.
Before commencing DP operations near a subsea pipeline, the DP operator should first:
Answer: Obtain accurate as-built charts or survey data showing the pipeline's exact position and any free-spans
Knowing the precise location, routing, and condition (especially free-spans) of subsea pipelines is essential to avoid inadvertent contact with thrusters or dropped objects.
When the DP Capability Plot shows the vessel can hold position in winds up to 35 knots from any direction, but the site ASOG limits operations to 25 knots, the operator should:
Answer: Adhere to the 25-knot ASOG limit because site-specific risk factors may not be reflected in the generic capability plot
The ASOG (Activity Specific Operating Guidelines) incorporates site hazards, equipment criticality, and consequence of position loss that a generic capability plot cannot capture.
During a DP diving operation, the diver reports that one thruster in the exclusion zone is rotating slowly. The correct immediate action is:
Answer: Inform the dive supervisor immediately and inhibit or shut down that thruster pending diver recovery
Diver safety is paramount — a rotating thruster in the exclusion zone poses immediate lethal risk, so the dive supervisor must be informed and the thruster inhibited immediately.