HK Confined Space Certified Worker case studies
HK Confined Space Certified Worker · Put your knowledge to work in context.
The Confined Space Certified Worker credential (密閉空間核准工人) is the Hong Kong certification that allows a worker to enter, work in, and act as a standby person for confined spaces under the Factories and Industrial Undertakings (Confined Spaces) Regulation. It is aimed at tradespeople who work in manholes, drainage and sewerage systems, tanks, pits, ducts, silos and similar enclosed spaces - and at the contractors and safety personnel who supervise them. The HK Confined Space Certified Worker case studies are 5 cases and about 4,456 words.
1The Blank Permit at the Housing Estate Manhole
Chan, a 42-year-old certified worker, is sent with a 19-year-old trainee to clear a blocked 450 mm drain at a private housing estate in Kwun Tong. Access is a 2.7 m deep manhole under the podium, with a 600 mm cover, plus a second chamber 3 m to one side.
870 words, about 4 min2Clean Readings at the Top of the Wet Well
At 14:30 a team arrives at a sewage pumping station in Tsuen Wan. The wet well is 4.2 m deep and 2.5 m square, with a 750 mm access opening at ground level and a sludge sump in one corner.
882 words, about 4 min3Cartridge Respirator in a Nitrogen-Blanketed Reactor
A contractor is asked to inspect the agitator shaft inside a 5 m³ stainless steel reactor at a pharmaceutical plant in Tai Po. The vessel has a 500 mm top manhole and a bottom outlet.
880 words, about 4 min4Standby Person at the Grease Interceptor
At 10:15, the standby person at a 2.4 m deep underground grease interceptor at a food factory in Yuen Long sees the entrant - who is wearing a full-body harness attached to a tripod and winch - slump against the wall about 1.8 m below the rim. The standby person has a radio, a first aid kit and a 4-gas detector.
907 words, about 5 min5Overnight Air-Out on the Fuel Oil Tank
A 12 m diameter, 8 m high fixed-roof fuel oil tank at a depot on Tsing Yi is to be cleaned of about 150 mm of sludge. It shares a common 100 mm transfer line with an adjacent tank still in service with 4 m of fuel oil; the only isolation between them is a closed gate valve at the tank nozzle, with a second valve further along the line.
917 words, about 5 min