Certification, purchase restrictions and records

Theo's ozone depletion prevention course was on a Saturday, at a training partner of HRAI in Kitchener. Northfield paid the fee and gave him the Friday afternoon off to study. On Monday he came in with a temporary certificate and a question for Dana: "The course said I can buy refrigerant now. Does that mean I can just go to the wholesaler and pick up a cylinder for a side job?" Dana laughed. "Legally, the wholesaler will sell it to you. But every kilogram you buy, charge and recover has to be written down, and the paperwork is what protects you when an inspector, a customer or a lawyer asks what happened to it."

This lesson covers three linked controls: who may handle refrigerant, who may buy it, and what must be recorded. Certification makes sure the people handling refrigerant know the rules and safe practices. Purchase restrictions keep refrigerant out of untrained hands. Records create a trail from the cylinder to the system to the reclaimer, so that refrigerant can be accounted for and leaks found.

Certification

Every province requires people who handle regulated refrigerants to hold a certificate or to have completed an approved environmental awareness course. In Ontario, the certificate is the ozone depletion prevention card, often called the ODP card. It is required by law for anyone who services, tests, charges, recovers or disposes of equipment containing ozone-depleting substances or other halocarbons such as HFCs, and for anyone who fills refrigerant containers or issues empty notices.

The Ontario card is earned by completing a one-day course approved by the province, offered by HRAI and its delivery partners and, for union members, through their training centres, and passing its test with a score of 75 per cent or higher. The card is valid for five years. It must be renewed before it expires; if it lapses, the course must be taken again. A technician who holds a certificate from another province can apply for Ontario recognition by providing confirmation from the issuing authority and signing a statement that they have reviewed the Ontario rules.

Other provinces have their own requirements, such as Quebec's qualification certificate for work on halocarbon systems and the environmental awareness courses recognized in many other provinces. Technicians who work on systems under the Federal Halocarbon Regulations, 2022 must hold a certification recognized by a province or territory, or an equivalent approved under those regulations. Because the rules vary, Northfield's technicians carry their Ontario card and keep copies of any other certificates they hold for jobs outside the province.

The ODP card is a refrigerant-handling certificate, not a trade qualification. It does not on its own entitle anyone to install or repair refrigeration and air conditioning systems; in Ontario that work belongs to the compulsory trade of refrigeration and air conditioning systems mechanic, which requires a registered apprenticeship or a certificate of qualification. Theo, as a registered apprentice, can work on systems under supervision, and with his ODP card he can now handle refrigerant himself.

A certificate is personal. It may not be lent, and a company may not let uncertified employees handle refrigerant under another person's card. Inspectors may ask to see a technician's card on the job, and suppliers check it at the counter.

Who may buy refrigerant

Ontario's rules link buying to certification: anyone who purchases regulated refrigerant for use in equipment needs a valid ODP card, and sellers keep records of their sales. Wholesalers check cards at the counter and record the card number with each sale. Refrigerant is sold in refillable, recyclable containers with a deposit, and a seller must accept back surplus CFC refrigerant at no charge. Many other provinces have similar sales controls.

The purpose is the same in both countries. Refrigerant sold to untrained buyers tends to end up in the atmosphere, through leaking do-it-yourself recharges of systems that are never repaired. Restricting purchases to certified technicians means the person adding refrigerant knows that a system needing refrigerant has a leak, and that the leak should be found and fixed.

Service records

Ontario's regulation requires a service record for each servicing or test, kept for at least two years and produced on request. It must include the date, the names of the technician and employer, a description of the work, the refrigerant type and the amounts added and recovered, with their sources, and any discharges. Leak test notices and empty notices are also records, attached to equipment, and copies must be kept. Owners of larger systems often have additional requirements under their own management programs, and systems under the Federal Halocarbon Regulations, 2022 must have a service log kept with or near the system.

Northfield's service records are kept in the company's dispatch software, with a paper backup in each van, and every record includes the cylinder number for refrigerant added or recovered. That last detail is what makes the records useful: it links each job to a cylinder, each cylinder to a purchase or a reclaimer shipment, and so gives a complete trail.

Accounting for every kilogram

Good companies go beyond the minimum records and reconcile their refrigerant inventory, much as a store reconciles its cash. At the end of each month, Northfield's office compares what came in with what went out, refrigerant type by type. The basic balance for a company or a van is:

Recovered refrigerant counts as coming into the company's cylinders, and refrigerant shipped to a reclaimer or returned to a supplier counts as going out. A small unaccounted amount is normal, from hose losses, scale rounding and the heel left in cylinders. A large or growing unaccounted amount means something is wrong: unrecorded charges, mislabelled cylinders, leaking cylinders, or refrigerant leaving the company in ways that should not happen.

# Monthly refrigerant reconciliation for each van, by refrigerant (kg)
vans = {
    "Van 4 (Theo)": {"R-410A": (28.5, 22.7, 9.8, 18.6, 12.0, 29.6),
                     "R-134a": (11.3, 0.0, 3.2, 1.1, 0.0, 13.3)},
    "Van 7":        {"R-410A": (31.0, 45.4, 4.1, 39.8, 0.0, 33.9),
                     "R-448A": (9.5, 11.3, 0.0, 6.0, 0.0, 9.4)},
}
LIMIT = 0.03   # flag if more than 3 % of throughput is unaccounted for
for van, refs in vans.items():
    for ref, (start, bought, recovered, charged, shipped, end) in refs.items():
        missing = start + bought + recovered - charged - shipped - end
        throughput = bought + recovered + charged + shipped
        share = missing / throughput if throughput else 0.0
        flag = "CHECK RECORDS" if share > LIMIT else "ok"
        print(f"{van:14s} {ref:7s} unaccounted {missing:5.1f} kg ({share * 100:4.1f} % of throughput)  {flag}")

Van 4 (Theo)   R-410A  unaccounted   0.8 kg ( 1.3 % of throughput)  ok
Van 4 (Theo)   R-134a  unaccounted   0.1 kg ( 2.3 % of throughput)  ok
Van 7          R-410A  unaccounted   6.8 kg ( 7.6 % of throughput)  CHECK RECORDS
Van 7          R-448A  unaccounted   5.4 kg (31.2 % of throughput)  CHECK RECORDS

Van 7's R-410A is flagged: more than 3 per cent of its throughput is missing. When Dana checked, the technician had charged a heat pump on a warranty call and recorded the job in the warranty system but not in the dispatch software. One missing entry explained the gap. Without the reconciliation, the error would have sat in the records indefinitely, and the warranty system's numbers and the company's would never have agreed.

Records that protect the technician

Records are often seen as paperwork that gets in the way of the real job. They are better seen as protection. If a customer claims a system was overcharged, the record shows what was added. If an inspector asks why a cylinder of R-22 was shipped, the record shows where it came from. If a system develops a leak the week after service, the record shows what was done and what was tested. And when the next technician arrives, the record tells them the system's history: refrigerant type, full charge, past leaks and their locations, saving time and avoiding mistakes such as topping up with the wrong refrigerant.

Dana's rules for records are short. Write the record before leaving the site. Weigh, do not estimate. Record cylinder numbers. Never back-date or change a record after the fact; if a mistake is found, add a correction with the date and a note. And if the paperwork and the cylinder do not agree, stop and find out why before going on.

A service record, start to finish

On a Tuesday in November, Theo serviced the brewery's walk-in cooler after Priya, the head brewer, reported that the box was running warm. He found a dirty condenser and a low charge. A leak search with the electronic detector found a leak at the cap-less Schrader port on the liquid line, confirmed with bubbles. He recovered the charge, replaced the core, fitted a sealing cap, pressure tested with nitrogen, evacuated and recharged by weight with the R-448A he had recovered plus new refrigerant from the van.

His service record listed the date and time, the brewery's name and address, the condensing unit's model and serial number, the refrigerant and its full charge of 4.5 kg (10 lb), the amount recovered and the recovery cylinder number, the amount of new refrigerant added and its cylinder number, the leak found and its repair, the nitrogen test pressure and result, the evacuation level reached, the final operating pressures, his name, his ODP card number and expiry date, and Northfield's name. He attached a new leak test notice to the unit showing no leaks, and gave Priya a copy of the record.

When Dana reviewed it, she pointed to one thing that made the record valuable: anyone reading it a year later would know where the last leak was, what was done, and how much refrigerant went in and out. That is the test of a good record. It answers the questions the next person will ask without anyone having to remember.

Records for owners of larger systems

Owners of larger systems, such as supermarket chains, hospitals and property managers, usually keep their own refrigerant registers: a list of every system with its refrigerant, full charge, location and service history. Many require contractors to report every addition and recovery so that they can calculate leak rates, budget for refrigerant and plan replacements. Contractors who supply complete, consistent records make that easy, and owners notice. Some companies use barcodes or electronic tags on cylinders and equipment so that every transfer is captured automatically.