Which statement about entering into a tank which has been sealed for a long time is TRUE?
A
The tank should be tested only once to ensure the oxygen content is at least 14% before entry.
B
The tank must be tested at frequent intervals to ensure that hazardous gasses have not regenerated.
C
The tank need not be tested for oxygen content if it is ventilated for more than 24 hours.
D
If the oxygen content tests at less than 12% you should wear an approved gas mask.
E
İlgili Sorular
Under the IALA-A Buoyage System, when entering from seaward a lateral system buoy to be left to port...The diurnal variation of pressure is not visible in the middle latitudes in winter because _________...A sea anchor is _____________________.If H2S exposure is anticipated, fixed monitoring devices aboard a MODU should have a low level conce...A pillar buoy is indicated by which letter in illustration D044NG?