Short answer: a vapor recovery system needs three tiers of checks. Daily checks take about five minutes per dispenser and catch the failures that hurt most — torn boots, kinked hoses, and a vacuum reading that has quietly drifted. Weekly checks look for wear and small leaks before they grow. Monthly checks are for a qualified technician who measures performance against specification rather than just looking. Most regulators expect this tiered routine, and the records are what prove you did it.
Training the crew to run the checklist
A checklist is only as good as the person holding it, and vapor recovery checklists get handed to whoever is on shift. Write the daily tier so a trained clerk can run it in five minutes without judgment calls: read this gauge, look at these three parts, write the number here. The weekly tier needs someone who can tell a stiffening hose from a new one, and the monthly tier needs a technician. Train once, then verify — walk the checklist with a new crew member for the first two weeks, and spot-check their records against the actual equipment. The stations where this discipline holds are the ones whose records survive an audit without a scramble.
Why a checklist beats memory
Vapor recovery failures are rarely dramatic. They arrive as a slow slide: a boot cracks, a hose flattens, a filter loads up, and each change on its own is invisible day to day. The crew that runs on memory catches failures at the inspection visit; the crew that runs on a written checklist catches them in week one. The checklist also protects you at audit time — inspectors ask for dated records, not recollections, and a tiered routine is the easiest way to produce them. Our guide to why a vapor recovery unit stops meeting emission limits shows how many of those limit failures trace back to a missed weekly check, and the annulus monitoring guide on our sister site covers the piping half of the same system, where a containment sump catches what the lines release.
Daily checks: five minutes per dispenser
Daily checks need no tools beyond your eyes, ears and a gauge reading. They are about the parts the public touches and the readings the system reports:
- Read the vacuum or A/L indicator and confirm it sits in the normal band the system was commissioned to;
- Look at each nozzle boot for cracks, tears or a missing faceplate, and reseat anything loose;
- Walk the vapor hose for kinks, flattening, abrasion and stiffness at the couplings;
- Listen at the unit for bearing noise or a vacuum pump running hot or rough;
- Check for odor at the dispenser, a sign that vapor is escaping rather than being captured.
A torn boot or a blocked line shows up first as a nozzle that keeps shutting off mid-fill, so treat repeated shut-offs as an inspection trigger, not a nuisance to reset.
Weekly checks: wear and small leaks
Weekly checks add measurement to looking. Bellows and hoses get a hands-on examination rather than a glance, the vacuum pump inlet filter gets a check for loading, and any fitting that showed a stain or residue gets wiped and re-checked the next day. The point of the weekly tier is to find the component that is on its way out — a hose that is stiffening, a boot that is cracking at the fold — while it is still a scheduled swap rather than an emergency. Our vacuum pump inlet filter guide covers the most common weekly item in detail.
Monthly checks: performance against specification
Monthly checks belong to a qualified technician, and the difference is that they measure instead of observe. Vacuum pump performance is checked against the manufacturer’s figures, the vapor return path is tested for blockages, controller air intake filters are cleaned or replaced, electrical connections and grounding continuity are verified, and the data log from the vapor recovery controller is reviewed for trend. That trend review is the part stations skip and later regret — a controller logging a slow efficiency decline gives you weeks of warning before an acute failure.
| Tier | Who | Typical items |
|---|---|---|
| Daily | Station staff | Indicator reading, boots, hoses, noise, odor |
| Weekly | Trained staff | Bellows and hose condition, filter loading, stains |
| Monthly | Technician | Pump performance, blockage test, electrical, data logs |
| Annual | Technician | Liquid blockage clearing test, leak test, records review |
What records to keep, and for how long
Keep dated checklists for every visit, the readings that were taken, any repairs with part numbers, and the periodic test results. Two years is a common minimum expectation, and keeping them longer costs nothing once the habit exists. The practical value is diagnostic: when recovery rate slides in month eight, the record of what was replaced in month three is often the whole explanation.
When to stop and call for help
Some findings should take a dispenser out of service immediately rather than wait for the next scheduled check: a reading outside the normal band that persists after a reset, visible liquid fuel where it should not be, a burning smell, or a vacuum pump that trips or runs hot. Taking one dispenser out of service for an afternoon is cheap compared with releasing vapor all month while waiting for a scheduled visit. If readings are drifting without an obvious cause, the troubleshooting path in our condensate carryover guide is a good next step.
Frequently asked questions
How often should vapor recovery equipment be inspected?
A vapor recovery maintenance routine commonly follows this pattern: a quick look every shift or day, a hands-on check weekly, a measured performance check monthly, and formal leak and blockage tests at least once a year or after any modification.
What is the single most common finding?
Damaged nozzle boots and hoses. They are handled constantly, sit in weather, and fail long before anything inside the skid does.
Can station staff do all the tiers themselves?
Daily and weekly tiers yes, with training. Monthly and annual tiers involve test equipment and specification readings and belong with a qualified technician.
Luoyang Wohong Petrochemical Equipment Co., Ltd. builds vapor recovery units and membrane separation skids for fuel stations, terminals and depots. Contact us for a recovery scheme matched to your vapor source and site layout.