Why look at smart lightning protection through GB 17681-2024?
When many people talk about smart lightning protection, the first things that come to mind are SPD online monitoring, lightning current monitoring, online grounding resistance monitoring, lightning early warning or cloud platform alarms. But in oil and petrochemical and hazardous chemical major hazard installation scenarios, smart lightning protection cannot be understood from the perspective of a single product.
Because hazardous chemical scenarios do not manage ordinary equipment, but high-risk media, explosive hazardous areas, large storage tanks, loading/unloading operations, lightning and static protection systems, grounding systems, alarm interlocking, safety monitoring platforms and the closed loop of operation, inspection and repair.
Based on public information, the focus of GB 17681-2024 is not "installing a few more monitoring devices", but standardizing system capabilities such as the design, construction, quality acceptance, operation, inspection and repair, and alarm management of safety monitoring systems for major hazard installations for hazardous chemicals. For smart lightning protection, this means an important change: lightning/static protection and grounding monitoring can no longer exist in isolation, and must enter the safety monitoring system of major hazard installations.
1. The changes in GB 17681-2024 show that safety monitoring is becoming systematized
The official name of GB 17681-2024 is Technical Specification for Safety Monitoring of Major Hazard Installations for Hazardous Chemicals. Judging by the name, it is no longer a single-perspective standard that merely surrounds acceptance of flammable and explosive tank farms; it has shifted toward safety monitoring systems for major hazard installations for hazardous chemicals.
The implication for enterprises is clear: safety monitoring is no longer just a construction-stage question of "whether there are devices, whether there are signals, whether there are alarms", but whether the system can operate continuously and stably, and whether it can support alarm management, inspection and repair, review and handling, and safety risk control.
Smart lightning protection should be understood in the same logic. Installing a grounding monitor, an SPD monitor or a lightning current monitor in a petrochemical tank farm does not mean the risk is already managed. What really matters is: whether the data is continuous, whether alarms are graded, whether abnormalities are handled by someone, whether the handling results are traceable, and whether the platform can build a long-term risk archive.
2. Why do oil and petrochemical scenarios demand more from smart lightning protection and grounding monitoring?
The special feature of oil and petrochemical and hazardous chemical major hazard installation scenarios is that lightning risk, surge risk, electrostatic risk and electrical safety risk often do not exist in isolation. There are close correlations among storage tanks, pump houses, loading/unloading areas, instrumentation systems, control systems, communication systems and video surveillance systems.
The grounding system is especially critical in such scenarios. It serves not only lightning current discharge, but also electrostatic discharge, equipotential bonding and the foundation of electrical safety. If the grounding status remains invisible for a long time, or only relies on annual test reports, it is difficult to discover in time the risks caused by corrosion, construction disturbance, loose connections and changing soil conditions.
SPDs and surge protection likewise cannot remain invisible for a long time. The safety monitoring system itself depends on instruments, sensors, communication gateways and control systems; if these systems are affected by surges, the safety monitoring capability may also decline. Therefore, smart lightning protection in oil and petrochemical scenarios not only protects equipment, but also protects the reliability of the safety monitoring system itself.
3. Core insights of GB 17681-2024 for smart lightning protection
The first insight is that smart lightning protection should enter the safety monitoring system rather than being built as a separate isolated platform. Lightning current events, SPD status, grounding status and surge events should form data relationships with the safety monitoring platform, video surveillance, gas detection, fire alarm interlocking and emergency handling.
The second insight is that grounding resistance monitoring should be upgraded from "a single value" to "trend status". Enterprises should not only care whether the grounding resistance measured on a certain day is compliant, but also whether the grounding status is stable over the long term, whether it mutates after a lightning strike, and whether there is a continuously rising trend at grounding points in the loading/unloading area and tank farm.
The third insight is that alarm management cannot stop at "having an alarm". For major hazard installation scenarios, alarms must be graded, confirmed, handled, reviewed and archived. If SPD abnormality, grounding abnormality, lightning current events and communication abnormality are all pushed at the same level, the field will soon fall into alarm fatigue.
The fourth insight is that O&M matters more than a one-time acceptance. A system that looks complete at the construction stage does not mean it remains effective in the long term. Device offline, data interruption, alarms nobody handles, improper maintenance of explosion-proof equipment, and grounding abnormalities left unreviewed for a long time will all gradually erode the real value of a smart lightning protection system.
4. What capabilities should a smart lightning protection system include for oil and petrochemical applications?
The first capability is lightning risk sensing. It includes lightning current monitoring, surge event recording, strike time, impulse intensity, affected area and event archives. These data answer: whether the site has experienced external impulses.
The second capability is protection status monitoring. It includes SPD disconnection, degradation, leakage current, temperature, backup protection status, and power and signal protection status. These data answer: whether the protective devices are still reliable.
The third capability is grounding and static protection status monitoring. It includes grounding resistance, grounding trends, grounding mutation, equipotential bonding, tank body grounding status and loading/unloading area grounding status. These data answer: whether charges and lightning current have a reliable discharge path.
The fourth capability is safety monitoring platform integration. Smart lightning protection data should support alarm grading, trend analysis, historical query, event archives, interlocked handling and report management, rather than staying at local display only.
The fifth capability is the O&M closure loop. It includes alarm confirmation, work order dispatch, field review, rectification records, recovery confirmation and statistical evaluation. Without closure, even the best monitoring data can hardly become real safety management capability.
5. What pitfalls do enterprises commonly fall into during implementation?
The first pitfall is buying equipment only without closing the data loop. Grounding monitors, SPD monitors and lightning current monitors are all installed, but the platform does not analyze, grade, dispatch work orders or archive, and in the end all you get is a pile of scattered data.
The second pitfall is looking only at the explosion-proof certificate and not at data quality. Explosion-proof compliance is the bottom line, but measurement accuracy, communication stability, anti-interference capability, data continuity and maintenance convenience during long-term operation are equally important.
The third pitfall is local display only, without integration into the safety monitoring system. For major hazard installation scenarios, lightning protection, static protection, grounding and surge protection must not become island systems.
The fourth pitfall is having many alarms but no grading. The more complex the platform, the less it should push all abnormalities in the same way. Critical risks must be seen first, and ordinary fluctuations should enter observation or trend analysis.
The fifth pitfall is no maintenance after acceptance. If a smart system lacks verification, inspection, review and maintenance mechanisms, over time it will degrade into a display piece that "looks like it has a platform but actually has no management".
6. How does FEXLINK understand the insights of GB 17681-2024 for smart lightning protection?
FEXLINK believes that the biggest insight of GB 17681-2024 for smart lightning protection is not reminding enterprises to add one more device, but reminding them that safety monitoring in high-risk scenarios must move from single-point equipment configuration to system operation effectiveness.
What the FEXLINK smart lightning protection system focuses on is: whether lightning current events are traceable, whether SPD status is judgeable, whether grounding status can be continuously monitored, whether alarms are graded, whether handling is closed-loop, and whether data can enter the safety monitoring system.
Behind this there are three shifts: from lightning protection equipment configuration to lightning protection status monitoring; from one-time grounding testing to grounding trend management; from alarm display to closed-loop safety monitoring of major hazard installations.
For oil and petrochemical plants, tank farms, loading/unloading areas and hazardous chemical scenarios, the value of smart lightning protection is not displaying a few parameters separately, but making lightning risk, protection status, grounding status and O&M handling effective data in the safety monitoring system.
Conclusion: The standard is not a burden, but an upgrade direction
The implementation of GB 17681-2024 means that safety monitoring of major hazard installations for hazardous chemicals is upgrading toward systematization, online monitoring, operation-orientation and closure. For oil and petrochemical plants, oil and gas storage tank farms, loading/unloading stations and hazardous chemical enterprises, smart lightning protection and grounding monitoring should not be merely auxiliary equipment, but should become a key data source in the safety monitoring system.
Lightning risk, SPD status, grounding status, surge events and O&M handling data can only move from "being visible" to "being managed" when they truly enter the safety monitoring system.
