The inspection form is not a form that can be completed just by filling it out. If the filling method is incorrect, it will become a form for handling inspections. Only by clearly defining the project, frequency, and interpretation standards can the inspection checklist truly prevent problems in the early stages. This article provides a framework for a direct implementation of the inspection checklist: what to check daily, what to check weekly and monthly, how to judge readings, how to use the ledger, and can be executed by following the schedule on the station.
The appearance and hanging status of the gas return hood of the refueling gun, the presence of oil stains in the bottom compartment of the refueling machine, the sealing of the discharge port cap, and whether the online monitoring data is within the normal range are all monitored once a day. The gas return situation during refueling and unloading is recorded on the day of unloading.
The value of daily inspection lies in its speed and consistency: five minutes a day, but it must be done every day. Missing a day may happen to miss a developing fault, such as the cracking of the return air hood, oil leakage, and falling off, which often have a process. Daily inspection is the earliest warning network in this process. It is recommended to fill in the daily inspection records on duty and not save them for weekends to make up - the time points of the supplemented records are distorted, and trend analysis is meaningless.
Check the liquid level of the collection tank and the operating parameters of the treatment device once a week; Check the appearance and anti-static connections of the breathing valve and randomly inspect the fastening of pipeline flanges once a month. Write the frequency in the header, check the date column, and any missing items can be seen at a glance.
The division of labor between weekly, monthly, and daily inspections is shown in the following table:
| Frequency | Project | Interpretation standards |
|---|---|---|
| daily | Return hood, bottom compartment oil stains, oil discharge port sealing, online monitoring data | Appearance intact without damage, data within normal range |
| Every week | Liquid level of collection tank and operating parameters of treatment device | The liquid level has not reached the pumping line, and the parameters are consistent with the baseline |
| Monthly | Breathing valve appearance, anti-static jumper, flange spot check | No corrosion or looseness, intact bridging, and no signs of leakage |
| each season | Conduct a self check against the list of testing institutions | Closed loop in advance, no panic on the day of testing |
Leave a normal range for key parameters on the inspection checklist, such as the daily fluctuation range of vacuum degree and pressure difference. If it exceeds the range, mark it as abnormal and report it for repair on the same day. Write the interpretation criteria in the attached page of the table, and new employees can learn from them without relying on oral transmission from experienced teachers.
Interpretation should distinguish between two situations: "exceeding the limit" and "drifting": exceeding the limit means that the reading is out of the range on the same day and should be dealt with immediately; Drift is when the reading is still within the range but continues to move in one direction for several weeks, which is an earlier signal. The habit of copying weekly readings into a trend table and arranging inspections for unidirectional changes in the same parameter for three consecutive weeks can prevent most gradual faults.
Summarize the abnormal items once a month and check the trend: repeated abnormalities of the same gun and monthly deviation of the same parameter are signals that the equipment should be maintained. The inspection records should be kept on file for future reference, and the abnormal closed-loop situation should be reviewed before third-party testing arrives.
The ledger has another usage: to provide a basis for maintenance and repair. The maintenance team will receive a record of "three abnormal occurrences of the No. 3 gun return hood within two months", and the handling method will be completely different from a single occasional abnormality. The ledger is transmitted between the station and maintenance parties, reducing communication costs and quickly locating faults.
Cut to the point where you can persist. The daily inspection should be controlled within a project volume of five to ten minutes. It is better to do fewer projects every day than to make up for them every week. The table is for operational services, not for inspection services. First, make a solid daily and weekly inspection, and then gradually add back monthly and quarterly items.
Report, but indicate as an observation item. Leave a note in the inspection form, recording sensory observations such as' normal readings but obvious abnormal noise 'and' normal parameters but increased oil smell ', for the next shift to compare. Sensory signals often appear before instrument drift, and discarding this column is equivalent to discarding the earliest warning.
It is recommended to bind and archive by year, and keep at least two complete years. Third party testing, annual self inspection, and equipment overhaul evaluation all review historical records. Two years of continuous records can reveal the true failure rate and maintenance pace, which is not convincing enough. Electronic ledger synchronization backup, paper version bound monthly.
LuoyangWohong PetrochemicalEquipment Co., Ltd. provides support for the supply, installation, and construction of inspection systems for gas station oil and gas recovery equipment. We can assist in customizing inspection form templates and interpretation standards. Please feel free to contact and communicate.
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