“ISO 9606-1 is a two year ticket.”
It sounds reasonable, but it is technically incorrect.
Under BS EN ISO 9606-1, a welder qualification is not defined by a simple expiry date. It is controlled through structured continuity and one of three defined revalidation routes. If you reduce it to “two years,” you are oversimplifying a compliance mechanism that was deliberately designed to prevent uncontrolled skill decay.
To understand this properly, we need to separate validity control from revalidation.
Before revalidation is even discussed, ISO 9606-1 requires that the qualification be confirmed every six months. This is not a renewal, it is a formal confirmation that the welder has continued to weld using the same process, within the original range of qualification, and that there is no reason to question competence.
That six-monthly confirmation is the backbone of the entire system. If it is not maintained, the qualification lapses, regardless of what happens at two years or at three years.
In other words, ISO 9606-1 does not allow a welder to qualify and then disappear into production for two years unchecked. It demands periodic, documented technical oversight.
The “two year ticket” language typically arises from a misunderstanding of Clause 9.3 b).
Clause 9.3 provides three revalidation routes a), b) and c). Route b) introduces a two-year control point. However, it does not state that the qualification only lasts two years. What it requires is that every two years, the welder’s competence is demonstrated through the testing of production welds.
Specifically, two welds produced within the last six months of the validity period must be tested by radiography, ultrasonic testing, or destructive examination, and must meet the applicable acceptance criteria. Those welds must be traceable to the welder.
This is a technical verification of ongoing competence: if the welds fail, the prolongation fails; if the welds cannot be traced, the prolongation fails; if six month continuity was not maintained, the qualification has already lapsed.
The two year interval is therefore a control checkpoint, not an expiry definition.
Under Clause 9.3, a manufacturer must operate one of three mechanisms.
Route a) requires a full re-test every three years. A new test coupon is welded and examined in accordance with ISO 9606-1. This is the most conservative approach and is the only route that genuinely operates on a fixed three year retest cycle.
Route b), as discussed, allows prolongation every two years through tested production welds. It avoids the cost of a full re-test, but it introduces strict traceability and testing requirements.
Route c) allows the qualification to remain valid without a fixed re-test interval, provided six-monthly confirmation continues and there is no reason to question the welder’s competence. This route relies heavily on a robust welding quality management system and, in many organisations, oversight under ISO 3834-2. It is not an informal internal sign-off, it is a structured competence control mechanism.
None of these routes describe a “two year ticket”.
In lower-risk environments, the language may not be challenged. In regulated sectors, it will be.
If you are manufacturing under EN 1090, PED, rail standards, or nuclear quality regimes, an auditor will expect to see:
If your system simply states “tickets are valid for two years”, it will not withstand interrogation.
The risk is not theoretical. An invalid welder qualification can invalidate fabrication compliance, which has contractual, financial and potentially legal implications.
ISO 9606-1 is a controlled competence system. It is designed to ensure that welding skill is maintained through active oversight, not through expiry dates.
It is not a two year ticket.
It is not a three year ticket.
It is a qualification governed by continuity, evidence and defined revalidation routes.
If your organisation cannot clearly explain which route it operates, how six-monthly confirmations are controlled, and how evidence is maintained, then your compliance framework is exposed.
At NECIT Services, when we audit welding systems or implement ISO 3834 controls, revalidation is consistently one of the weakest areas. The problem is rarely technical welding ability, it is governance.
If your welder qualification system has never been interrogated at Clause 9.2 and 9.3 level, it is worth reviewing before your next client audit does it for you.
