Most commercial gas PPM tenders are awarded on a combination of price, geography, and recommendation. The technical qualification of the engineers who will actually attend the site is rarely tested in the procurement process. This is the gap. A contractor with a national operations footprint may hold every relevant qualification at organisational level while the engineer dispatched to a specific site does not.
The Gas Safety (Installation and Use) Regulations 1998 require any person working on a gas installation to be competent. For commercial gas, competence is evidenced by current ACS qualifications, which expire every five years. Where a commercial gas incident occurs, the qualifications of the specific engineer who last worked on the installation are part of the HSE investigation. The contractor's letterhead is not.
The following questions belong in the technical section of every commercial gas PPM tender. Procurement basics — insurance, references, financial standing — are covered by standard PQQs. These are the gas-specific questions that separate a competent commercial contractor from a dispatch operation.
A bid that does not name the engineers is a bid that reserves the right to assign anyone. Ask for the named team and their qualifications. Confirm that subcontracted labour, if used, will hold equivalent qualifications.
ACS qualifications are valid for five years. An engineer six months from expiry is not the same proposition as an engineer two years from expiry. Insist on certificate copies and check the expiry dates yourself.
Core competence (COCN1 or CODNCO1) authorises commercial gas work above 75 mbar but is not, on its own, sufficient to work on a commercial boiler. Appliance work requires the relevant module: CIGA1 for commercial indirect-fired heating boilers, CDGA1 for direct-fired air heaters, CORT1 for radiant tube heaters. A contractor who proposes engineers holding only COCN1 has not qualified them to maintain the heating plant.
Commercial catering gas is a separate qualification track. CCCN1 is the core. COMCAT1 covers ranges, boilers, and bain-maries. COMCAT3 covers fryers and griddles. An engineer with COCN1 alone cannot lawfully work on the kitchen. If the site has gas catering equipment, the catering qualifications must be in the bid by name.
A compliant commercial gas safety record identifies every appliance by location, manufacturer, model, and serial number; records the test readings; documents any defects with the appliance status (At Risk, Immediately Dangerous, or Not To Current Standards); and is signed by the engineer who carried out the work. Photographic evidence of installation condition and combustion analyser printouts strengthen the record. Stripped-down "compliance certificates" with the appliance line missing or the engineer signature pre-printed are recurring HSE audit findings.
The competent answer references the Gas Industry Unsafe Situations Procedure, the requirement to notify the responsible person, the protocol for disconnection or isolation with the gas user's permission, and the warning notice documentation. A contractor who cannot articulate this in the bid will not handle it well on the day.
For genuine commercial installations, the relevant standards are IGE/UP/1A (installations up to 1m³ volume, up to 40 mbar, up to 150mm diameter — tested under TPCP1A) and IGE/UP/1 (larger industrial installations up to 16 bar — tested under TPCP1). Routine PPM may not invoke these qualifications. Any contract that includes modifications, replacements, or new pipework should specify which TPCP scope the engineers hold and confirm it matches the site.
For FM directors, estate managers, bursars, and procurement leads, the working test of a commercial gas PPM tender is whether the answers to these questions are specific, document-backed, and given by someone who understands the regulations rather than a sales contact who refers them upward.
A contractor that cannot name the engineer attending site by the time of award is not a contractor. It is a dispatch operation. The distinction matters when the HSE asks who was qualified to do the work.