Service · NOM-020-STPS
NOM-020-STPS consulting: pressure vessels
Categorized inventory, complete per-equipment files and review-ready evidence — for facilities in Tijuana, Ensenada, Tecate and Mexicali.
In context
NOM-020-STPS-2011 regulates pressure vessels, cryogenic vessels and steam generators (boilers) operating in workplaces. If your facility runs compressors, air tanks, autoclaves, boilers or pressure/vacuum lines, it very likely applies — and it's one of the first standards an STPS inspection looks at.
Our job is to leave your inventory categorized, every piece of equipment with a complete file, and the evidence organized so a review doesn't depend on anyone's memory. We don't fabricate records: we organize, complete and leave requirement-to-file traceability.
What NOM-020-STPS requires
Equipment list and categorization
Every pressure/vacuum asset, classified as category I, II or III by its fluid, the set pressure of its safety valve and its volume.
Per-equipment file
General data, specifications or design calculations, and repair/modification history.
Operation, maintenance and review programs
With records proving they actually run.
Notice to the STPS
Category III equipment needs a verification unit's compliance opinion and a notice to the STPS, which assigns it a control number.
Periodic tests and examinations
Pressure tests or non-destructive examinations at least every five years for category II and III equipment.
Trained personnel
Training evidence for the people operating the equipment.
The NOM-020 package
Document control, logs and traceability designed to withstand review.
Deliverables
- Gap assessment (by requirement)
- Action plan (owners/dates/closure criteria)
- Evidence index (req → file → location → rev)
What we need from you
- Equipment/RSP inventory
- Existing docs (if any)
- Audit date (if any)
Typical timeline
7–15 business days (scope-dependent)
How we work
No noise: three verifiable phases. Deliverables defined before starting.
Step 1: Assessment
Operation + evidence + gaps prioritized by impact and urgency.
Step 2: Order + traceability
Structure, versions, records, full evidence index.
Step 3: Verifiable closure
Open items closed by criteria. Package audit-ready.
NOM-020 frequently asked questions
Pressure vessels (air tanks, autoclaves, heat exchangers), cryogenic vessels and steam generators/boilers. Any asset operating above/below atmospheric pressure or under vacuum should be evaluated.
The standard classifies each asset by its fluid, the set pressure of its safety valve and its volume. The category defines the obligations: category I is controlled with a list, a file and inspections; category II adds maintenance programs and pressure tests at least every five years, and category III also needs a verification unit's compliance opinion and a notice to the STPS.
We can include vessel inspection and pressure/vacuum calculations depending on scope. Where an accredited inspection body is required, we coordinate the service and organize the resulting evidence.
We start with a rapid assessment within 24 hours and prioritize by risk. In many cases critical open items close in 7–15 business days, depending on inventory.
A rough count of pressure/vacuum equipment, the plant's city, and the audit date if there is one. We quote within 24–48 hours with a written scope.
Let's talk about your next audit.
Tell us about your case. Within 24–48h you'll receive a written scope with deliverables, timeline, and pricing — no commitment.
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If you're not sure which service fits, we quote the minimum viable scope.