Know what is on site, where, and how sure you are.
Every drum, tank and box on the job with its SDS, its store and its history. Crews record with a scan, tank sensors add an hourly measured figure, and when the two disagree a person reviews the gap instead of the number quietly changing.
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No product approved without a reviewed SDS.
Register a product once with its hazards, why it is on the job and how much may be kept. Link the safety data sheet from the shared library, ask for it to be found, or attach your own. A safety manager reviews the SDS and approves the product; a newer SDS revision is flagged for them to adopt.
- Storage zones with the classes and quantities your safety team allows.
- Company policies written once and reused on every job, with versions.
Plans: Company and Business
How to register a chemicalRecord stock where the work happens.
Print a QR label for each container. Scanning it with the phone camera, or touching an NFC tag in the field app, opens that container with large buttons to issue, count, move or return. Without signal, entries wait on the phone and upload later; a clash with someone else's entry is held for review, not lost.
Plans: Company and Business
How to scan and record stockAn hourly measured figure for the tanks that matter.
Connect LoRaWAN level sensors through ChirpStack or The Things Stack, Digital Matter trackers, an MQTT broker or any sender that can post JSON. Describe the tank once and approve the calibration. Every raw reading is kept, impossible readings are held back, and a quiet sensor or low battery raises an alert.
- Vertical and horizontal cylinders, rectangular tanks, strapping tables and scales.
- The connector's token belongs to the connector, not a person, so it outlives staff changes.
Plans: Company and Business
How to connect a tank level sensorWhen the count and the records disagree, a person decides.
Recorded stock comes from people's entries; measured stock comes from counts and sensors. A gap of more than 2% opens a variance. The reviewer accepts the measured figure, explains it or dismisses it, and an accepted figure is added as an adjustment with its reason. History is append-only: nothing is edited or deleted.
Plans: Company and Business
How to review a stock varianceLow stock flagged before the run-out.
Set a reorder point per product or container. The alert goes up at the reorder point and clears only once stock is comfortably above it, so it does not flicker. A reorder list per job or across jobs shows what to order and by when, and exports as CSV. Nothing is ordered automatically.
Plans: Company and Business
A dated list responders can use, even offline.
Every substance by location with hazards, quantities, SDS links and when each figure was last confirmed. Print it, save it as PDF or CSV, or keep an offline copy on a phone. A free emergency viewer role opens only this page, and every opening is recorded.
Plans: Company and Business
How to keep the emergency inventory readyQuestions contractors ask
Do I need sensors to use it?
No. Labels, scanning and counts work on their own. Sensors add a measured figure for the tanks where a wrong number costs the most, such as fuel.
Which sensors work with YakProject?
LoRaWAN level sensors through ChirpStack or The Things Stack (Milesight EM500-UDL and Dragino LDDS75 payloads are decoded if the network server has not), Digital Matter cellular trackers, an MQTT broker, and any device or platform that can post a JSON reading over HTTP.
Is a sensor safe to fit on a fuel or solvent tank?
Only if it is certified for that hazardous location. Most battery sensors are not by default. Have a competent person assess the tank, the substance and the zone first.
Does the register make us compliant?
No. It keeps your SDS, approvals and inventory organised and dated, and every screen says it is not a legal certification. Your safety program and regulator stay in charge.
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