Incident Report

2022-11-01Due to thinner tights laddering and needing to be replaced more than once, the diver used 80 dernier tights, as these had a thicker thread, and when stretched they have smaller, but more uniform hole. On these regs, the tights had lost their tension, becoming thick again. Removing the faceplate and breathing through the mouth piece showed fair resistance. On previous long dives the diver had experienced an increased breathing resistance due to the build-up thick saliva (due to the dry air) on the filter, removing the reg and swirling it washed this away.  The previous day and a half the dive coughed up thick phlegm, and had thick saliva, which during the week turned into a chest infection with crackling lungs, (which responded promptly to antibiotics). Air was used at 45m. The diver does not swim fast The diver prefers smoother more resistive breathing regs, and dislikes regs that provide a sharp noisy forceful breath. The diver entered on 70% and dropped the Ali80 at 11m and switched to an Ali80 of air, they verified the analysis sticker on the tank corresponded to the reg by shutting down and breathing down the reg. At 47m the diver stopped to turn, and waited for 2 DPV divers that had passed on the inward journey to exit ahead. The was comfortable, but did feel an impatience for the DPV divers to pass. On ascending the diver experienced worm like tingling in their fingers. Fearing 02 toxicity (and the possibility of fitting) the diver switched to his side mount bottles (also air) at 30m. The diver considered alerting the DPV divers who stopped scootering and were slowly ascending, but did not see how it would benefit the situation (especially if it would delay ascent to a shallow depth) , The symptoms promptly disappeared with no further symptoms. In the car park the diver checked the analysis stickers, re-analysed tanks and confirmed the correct tank was breathed with the pressure gauges. Restrictions on the diver's arms were discussed, but the diver has Kubis with silicone wrist seals and on one arm has only shears, which was not tight. The symptoms were discussed with a hyperbaric doctor who happened to be diving the site, and the general consensus was  CO2 hit. At the time the diver considered it possible that the tingly worms were due to using Kubi's and heated gloves with a fast decent, but he has since done dives to 78m on CCR.The diver still uses tights on his sump kit, but is more aware of checking them. On regs that a less likely to be used for sumps (stage regs, and regs set up in the certification agency style) he no longer has tights. The diver is now very away of the toll on kit and there person of traveling long distances.