The registry holds the instrument with the certifying contractor’s records. What circulates is the face copy in each ring’s operating pack — it has to be there; it is what the maintenance crews work off. This one was printed at a trunk gallery bench and handed across without anybody’s permission being asked, because the engineer printing it had just walked his own gallery twice looking for a changeover the drawings promised, and had not found it, and had gone and looked at four more frame sets to be sure.
The face:
One instrument, issued 2320. Redundancy certification, environmental trunk runs. Rings Five, Six, Seven and Eight.
Four rings, one certificate. That is normal — you certify the design, and the certificate covers the runs built to it. The engineer said the word normal out loud, and then stood with his mouth slightly open, hearing it back.
What is not on the face
Asked how many runs the instrument covered, the man who worked under it every day answered: I don’t know. My pack is my frame sets. The answer was twenty-two — every environmental trunk run under the four rings, serving thirteen thousand people. The certificate does not say so. It names no run, no frame, no bore, no gallery and no corridor. It is a finding about a drawing, extended by construction to steel it has never described.
A design certificate is one sheet, and one sheet is one custody, one signature chain, one retrieval request — which is why, when the panel finally asked the registry for the original, everything four rings had been living inside came down to a single instrument travelling in a single folder. Two years on, the feeds would run its contents for two days straight, and a penalty notice would come over from the civil side for indexing: three lines and a schedule reference, naming the certificate by its number, the provision it offended, the four rings the instrument covered, and the sum — paid by the nine houses inside the day. The notice named no person. The certificate never had either.