tender for assistance for skilled jobs at ah and q10 , w . island , fact cd . , tender for assistance for skilled jobs at ah and q10 , w . island , fact cd . , supply of skilled fitters and diesel mechanic: supply of skilled / qualified fitters / diesel mechanic for the jobs such as overhauling and preventive / running maintenance of ammonia compressors , pumps , gear boxes , ship unloader , conveyor systems , acid pumps , lines , diesel engines , payloader etc . in mechanical maintenance department of w . island installations , work includes dismantling , assembling , cleaning of the above as per the instruction of engineer in charge . , supply of skilled welders: supply of skilled / qualified welders for the jobs such as overhauling and preventive / running maintenance of ammonia compressors , pumps , gear boxes , ship unloader , conveyor systems , acid lines , tanks etc . in mechanical maintenance department of w . island installations , work includes arrangement of welding and cutting set for works , welding of pipes , welding of structurals , grinding , modification of various machine and equipments as per the instruction of the engineer in charge .