FOR Pigging contractors, in-line inspection providers and pipeline operators
Separate cleaning runs from inspection services
A cleaning pig, a gauging tool and an instrumented inspection tool perform different jobs. The contractor’s scope should identify the service, tool type and pipeline conditions it is prepared to accept. State whether the firm also interprets data or limits its responsibility to operating the tool and delivering measurements.
Describe who controls pipeline flow, isolates the launcher and receiver, verifies the route and authorizes the run. PHMSA recognizes in-line inspection as one assessment method within a wider integrity process. It should not be represented as detecting every possible defect, and a successful run should not be treated as a universal assurance of pipeline condition.
Plan for a tool that does not reach the receiver
A stuck or damaged tool can create retrieval costs, excavation, pipeline interruption and lost equipment. Ownership and rental terms matter: the operator may agree to reimburse a specialist tool even where the contractor’s equipment policy restricts property inside a pipeline. Review those terms before accepting a run rather than after the tool is stranded.
Ask about valuation, recovery expense, damage to the pipeline and responsibility for customer product. The cost of repeating an unsuccessful inspection may differ from a claim for damage caused by the operation. Contractual guarantees of a complete dataset or uninterrupted throughput should be evaluated separately from liability for an accidental physical event.
Review pressure and product-transfer interfaces
Launching and receiving involve openings into a system that may contain pressurized gas, liquid or residue. The operator and contractor need a documented division of responsibility for isolation, depressurization and acceptance of the work area. This is an operating and engineering matter; insurance should follow the agreed roles rather than substitute for those controls.
A release could involve worker injury, contamination and damage to nearby equipment. Compare general liability, pollution and employers liability arrangements with the actual task and location. Identify responsibility for recovered waste and cleaning materials. A pipeline operator’s own pollution coverage and the contractor’s operations coverage may protect different interests and impose different notice requirements.
Keep run evidence and data obligations aligned
Provide tool schedules, values, operating limits, representative contracts and a history of unsuccessful runs or retrieval events. Explain pre-run information requirements, acceptance criteria and the procedure when field conditions differ from the client’s description. If interpretation is offered, include qualifications and professional quality-control procedures.
Retain run logs, flow information, tool condition photographs and records of deviations. Clearly distinguish preliminary findings from a final report and document how urgent anomalies are communicated. Review whether professional liability is needed for interpretation or advice, rather than assuming a physical inspection classification is sufficient. A well-defined scope helps separate a tool-operation loss from a later allegation about the meaning of the data.
Operational exposures & coverage review
These review points are educational interpretation, not promises of insurance coverage.
| Exposure | Insurance review |
|---|---|
| Stuck tool | Review rental valuation and recovery costs. |
| Launcher/receiver | Allocate pressure isolation and product custody. |
| Data deliverable | Separate raw measurements from interpretation. |
Questions for your next review
- Who controls flow and isolation during the run?
- What happens contractually if the tool is not recovered?
- Does the firm interpret findings or only deliver data?
Connect this topic to your program
Bring the operational details above into a coordinated review of your contracts, loss history and actual policy wording. Explore Montridge energy services insurance services for the related brokerage service.
Source references
Primary-source background informs the technical discussion. Insurance review questions are educational interpretation; a source link does not establish coverage or certify compliance.
PHMSA describes integrating assessment data, identifying threats and selecting integrity actions.
Scope: United States; regulated pipelines, applicability depends on system · Source reviewed 2026-11-01
PHMSA describes facility and construction inspection subjects, including welding, testing and LNG operations.
Scope: United States; applicable federal/state pipeline and LNG jurisdiction · Source reviewed 2026-11-01
Prepared November 1, 2026. Confirm current requirements and their application to your work before relying on them. Specific insurance outcomes require review of the complete policy and endorsements.