AR · Expiry & renewal tracking
Never let a fleet vehicle's CNG cylinder pass its five-year re-test date
A vehicle's CNG cylinder is re-tested every five years, with a hydraulic test, under the procedure of Argentina's gas regulator (ENARGAS). The user goes to an authorised installation workshop, which sends the cylinder to a Periodic Cylinder Inspection Centre and hands over the pass or fail certificate.
According to Argentina's gas regulator (website enargas.gob.ar, now shown as ENReGE, the National Gas and Electricity Regulator), the periodic inspection of a vehicle's CNG (compressed natural gas, GNC) cylinder must be carried out every five years. The procedure is aimed at users of vehicular CNG and is valid for five years (ENARGAS, five-year cylinder inspection procedure).
The user takes the vehicle to an authorised installation workshop (Taller de Montaje, TdM). The workshop sends the cylinder to a Periodic Cylinder Inspection Centre (CRPC) for inspection and hydraulic testing, and the user signs the commitment letter required by point A.4 of Resolution 2603. Once the inspection is finished, the workshop must hand over the certificate issued by the CRPC, marked pass or fail (ENARGAS, five-year inspection procedure).
The cylinder re-test is separate from the yearly inspection of the complete CNG equipment, which is also done at an authorised installation workshop and is valid for one year. After the yearly inspection, the documents handed over include the refuelling authorisation sticker, the technical data form, the CNG equipment identification card and, where applicable, the cylinder inspection certificate (ENARGAS, annual inspection procedure).
At a glance
| Validity | 5 years (ENARGAS, five-year CNG cylinder inspection procedure) |
|---|---|
| Where | At an authorised installation workshop, which sends the cylinder to a Periodic Cylinder Inspection Centre (CRPC) |
| What is done | Cylinder inspection and hydraulic test; the user signs the commitment letter under point A.4 of Resolution 2603 |
| Evidence | Certificate issued by the CRPC (pass or fail), handed over by the installation workshop |
| Link to the yearly inspection | The complete CNG equipment is inspected every year; the cylinder certificate is part of the paperwork where applicable (ENARGAS, annual inspection procedure) |
| Before buying a CNG vehicle | Check the status of the cylinder and the regulator on the regulator's website (ENARGAS, FAQ) |
A national rule administered by the gas regulator. The authorised players in the CNG system (complete-equipment producers, cylinder inspection centres, installation workshops, filling stations) are listed on the regulator's website.
Who is responsible?
The user of the CNG vehicle takes it to an authorised installation workshop. The workshop sends the cylinder to the Periodic Cylinder Inspection Centre and, once the inspection is done, must hand the CRPC certificate to the user (ENARGAS, five-year inspection procedure). The installation workshop must carry out the technical inspection of the equipment in line with the rules in force, supervised by its Technical Representative (ENARGAS, annual inspection procedure).
If the deadline passes
The Periodic Cylinder Inspection Centre issues a pass or fail certificate, which the installation workshop must hand to the user (ENARGAS, five-year inspection procedure). To refuel with CNG the vehicle must have a valid refuelling sticker stuck to the windscreen, obtained through the yearly inspection of the complete equipment; a missing or damaged sticker makes refuelling impossible (ENARGAS, FAQ). The regulator's pages consulted do not spell out any other specific consequence of an overdue five-year cylinder test.
Two dates per vehicle
A CNG vehicle has two separate expiry dates: the yearly inspection of the complete equipment, with its sticker, and the five-year cylinder inspection, with its hydraulic test (ENARGAS, annual and five-year inspection procedures). Track them separately: the cylinder does not expire together with the sticker, and in the year both fall due the workshop needs the cylinder to send it to the CRPC.
Tracking it with ExpirySuite
- Add each CNG vehicle and record the expiry date of the cylinder's five-year inspection, five years from the date on the CRPC certificate; to track the yearly sticker as well, create a separate record.
- Email reminders arrive 60, 30, 14, 7 and 1 day before expiry and on the expiry day.
- The installation workshop or the driver can upload the CRPC certificate through a secure link that is valid for 14 days and needs no account.
- Assign a responsible person to each vehicle, such as the fleet manager; if an inspection expires, managers get further reminders 3, 7 and 14 days later.
Frequently asked questions
- How often is the CNG cylinder inspected?
- Every five years; the procedure is valid for five years (ENARGAS, five-year inspection procedure and FAQ).
- Where is the cylinder inspected?
- The user goes to an authorised installation workshop; the workshop sends the cylinder to the Periodic Cylinder Inspection Centre (CRPC) for inspection and hydraulic testing (ENARGAS, five-year inspection procedure).
- What proof is issued?
- The certificate issued by the CRPC, marked pass or fail, which the installation workshop must hand to the user when the inspection is finished (ENARGAS, five-year inspection procedure).
- Does the cylinder test replace the yearly equipment inspection?
- No. The technical inspection of the complete CNG equipment is carried out every year at an authorised installation workshop and is valid for one year; the cylinder is inspected every five years (ENARGAS, annual inspection procedure and FAQ).
Sources
- ENARGAS/ENReGE: Revisión quinquenal del cilindro de GNC (trámite)
- ENARGAS/ENReGE: Revisión anual del equipo completo de GNC (trámite)
- ENARGAS/ENReGE: Preguntas frecuentes sobre uso seguro del gas natural vehicular
- ENARGAS/ENReGE: Trámites para usuarios de gas natural vehicular (índice)
- ENARGAS/ENReGE: Sujetos del sistema de GNC habilitados (PEC, CRPC, Talleres de Montaje, estaciones de carga)
Last checked: Oct 10, 2026 · This page summarises official sources for general information and is not legal advice. Check the linked sources for current rules and fees.
Made for five-yearly CNG cylinder hydrostatic re-test (Argentina)
A ready template for five-yearly CNG cylinder hydrostatic re-test (Argentina) with sensible validity defaults, so you enter less and track more.
Reminders on time
Email alerts at 60, 30, 14, 7 and 1 day before each five-yearly CNG cylinder hydrostatic re-test (Argentina) expires, plus overdue escalation to managers.
Assign an owner
Give each five-yearly CNG cylinder hydrostatic re-test (Argentina) an owner and let employees update their own via a secure link — no login needed.