SY/T 6714-2020 in English
VALIDApproach for oil&gas pipeline risk-based inspection
- Issued on:2020-10-23
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
Introduction
Analysis of the core content of the standard
This standard replaces the SY/T 6714-2008 version, mainly adding specific detection methods for pipeline lines and station process pipelines, and strengthening the risk-oriented detection strategy. The technological evolution is reflected in: deleting the reference content of API 581 and establishing a localized detection system.
Comparison of three dimensions of risk assessment
| Evaluation dimensions | Pipeline routes | Station process pipelines | Method differences |
|---|---|---|---|
| Risk identification | 6 types of pipe body defects | 5 types of body anomalies | Station adds stress concentration items |
| Detection cycle | ≤5 years | ≤8 years | Station can be dynamically adjusted |
| Special pipe sections | Geologically sensitive areas | Vibration/non-flowing pipe sections | Station yards need to pay attention to alternating loads |
Key points for implementing detection methods
Typical application scenarios
Case 1: In the external corrosion detection of a long-distance pipeline, the AC potential gradient method + anti-corrosion layer electric spark detection combination scheme was adopted, and 3 anti-corrosion layer damage points were found. After excavation verification, the accuracy rate reached 92%.
Case 2: In the detection of circumferential weld defects at the station yard, the ultrasonic phased array technology detected crack defects larger than 2mm, which increased the detection efficiency by 40% compared with the traditional UT.
Suggestions for the implementation of the standard
- Establish a pipeline integrity management system to integrate previous inspection data
- High-risk pipeline sections should give priority to the use of a multi-dimensional internal inspection technology combination
- A dynamic risk assessment model should be established for station process pipelines
- Efficiency test indicators need to be included in the annual integrity evaluation report
Technology Development Outlook
With the maturity of electromagnetic ultrasonic testing (EMAT) and digital radiography (DR) technologies, future standards may add: ① Composite material pipeline inspection methods ② Artificial intelligence defect recognition specifications ③ Real-time monitoring data fusion requirements.
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