When we test the air after someone else's removal, the state of the site tells us most of the story before we have counted a single fibre.
When we come in to test the air after a removal, independent of the contractor who did the work, the first thing that tells me how the job has been managed is not the fibre count. It is the state of the site when I walk in. First impressions, same as anything in life.
I want to avoid seeing a decontamination unit that is already packed up and ready to leave, with no access hatches in the enclosure, no vacuums inside for the final cleaning by the team. When you arrive and everyone appears eager to leave, it indicates something. If you're that eager to leave, it raises questions about how much care was taken with the work just completed. Conversely, I prefer to see an enclosure that is well sealed, clearly under negative pressure, with good lift on the airlock flaps, and proper paperwork. My analysts check all elements thoroughly, but making a good first impression helps prevent problems later.
The four-stage clearance process has improved significantly, and bookings now reflect reality. Previously, an analyst might complete four or five clearances in a day, but now each clearance typically covers one or two jobs, especially when there's a reassurance test in the afternoon, allowing more thorough work. We no longer spend two hours on a clearance or three hours on a two-hundred-square-metre enclosure. For larger projects, we reserve half a day, a full day, or even two days, first for inspection and testing, and then a second day to witness the enclosure being taken down during stage four.
The one that used to cause real arguments was personal monitoring. Licensed contractors are required to conduct personal monitoring to build their risk assessments and method statements. But personal monitoring has to be done while operatives are actually working. So if you book me at twelve for a half-day clearance, that is after the work is finished, and I cannot magic up a personal reading after the event. You cannot go back in time and recapture it. So now, if you want a clearance and personals, that is a full-day booking. We come in during the morning while they are finishing, do the personal monitoring, then run the clearance in the afternoon. Nobody likes paying for what they think is extra, but the HSE deemed it necessary, and our own leak test results during live works back it up. Even with an enclosure under negative pressure, you get breaches, and we have picked up elevated readings on leak tests that prove exactly why that monitoring needs to happen.
In the end, this industry has moved beyond simply churning out clearances for the money. It is about proving yourself as a premier supplier and staying there. Anyone can look good on a website or on social media. The proof is what you do when you are standing on the site, and that only counts if you do it consistently, year in, year out.
