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API Recommended Practice 1174 (API RP 1174-2015), second edition, provides a framework for the development, implementation, and continuous improvement of operator qualification (OQ) programs for personnel performing covered tasks on hazardous liquid and gas transmission pipelines. The recommended practice is intended to assist operators in meeting the performance-based requirements of the U.S. Department of Transportation (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) regulations under 49 CFR Part 192 (Natural Gas) and Part 195 (Hazardous Liquids).
The scope of API RP 1174-2015 covers all pipeline systems subject to these regulatory parts, including onshore pipelines, breakout tanks, and storage facilities. It does not apply to offshore gathering or production lines unless specifically incorporated by jurisdictional requirements. The practice defines a covered task as an activity that involves the operation, maintenance, repair, or integrity management of pipeline facilities, where erroneous performance would have a significant adverse effect on safety, health, or the environment.
API RP 1174-2015 identifies four essential components of an effective OQ program: identification of covered tasks, qualification of individuals, periodic evaluation, and records management. The practice emphasizes a performance-based approach, allowing operators flexibility in defining qualification criteria and evaluation methods.
| Covered Task Category | Example Task | Typical Evaluation Method | Re-Evaluation Interval |
|---|---|---|---|
| Pipeline Operation | Startup/shutdown of compressor station | Written exam + demonstration | 3 years |
| Maintenance | Valve replacement in high-pressure segment | On-the-job evaluation with checklist | 5 years |
| Integrity Management | ILI data analysis and defect assessment | Simulation exercise + oral exam | 3 years |
| Emergency Response | Activation of emergency shutdown system | Drill observation and debrief | 1 year |
The standard recognizes multiple evaluation methods: written or oral examinations, on-the-job performance observations, simulations, and third-party certifications. The chosen method must be valid, reliable, and capable of measuring the knowledge and skills required for the task. API RP 1174-2015 also addresses the use of previous experience and training as part of the qualification process, provided the operator documents the basis for such equivalencies.
When new pipelines, equipment, or procedures are introduced, or when regulations or operating conditions change, the OQ program must be reviewed to determine if new covered tasks arise or existing qualifications remain valid. API RP 1174-2015 requires a systematic MOC process to ensure ongoing competence.
Operators implementing an OQ program based on API RP 1174-2015 should follow a structured process:
One common challenge is ensuring that contract personnel are qualified to the same standard. The recommended practice advises operators to verify the qualifications of contractor workers through mutual recognition agreements, audits, or direct evaluation.
API RP 1174-2015 is explicitly referenced in PHMSA’s guidance documents as an acceptable means of demonstrating compliance with the OQ requirements under 49 CFR 192.809 and 195.509. While the standard itself is voluntary, its principles are largely adopted by regulators as the industry norm.
Operators outside the United States can also benefit from the recommended practice as the framework aligns with international pipeline safety management principles (e.g., ISO 31000, ISO 29001). However, local regulations may impose additional or different requirements.
© 2026 — This technical article is provided for informational purposes and does not substitute for the official API RP 1174-2015 publication or applicable regulations.