... purposes, 76 2 fired and heated vessels, 76 2 pipeline examination, 79 5 6 piping, 76 2 Pressure Equipment Directive, 76 0 record keeping, 76 5 6 regulations for safe use, 76 3 6, 79 4 6 rigid construction examination, 79 5 6 transportable ... 569 time weighted average (TWA)values, 574 units and recommendations, 574 ventilation control, 575 7 ventilation performance assessment, 577 –80wet and dry bulb temperaturemeasurement, 573 see also ... 58 Work related upper limb disorders(WRULD), 482–3, 60 6–9from display screen equipment(DSE), 60 7 9, 61 1physiology of, 60 6 7 Work- related stress, 409Working environment, 63 1–8cleanliness, 63 2colour,...