Part 4 - ADNOC Interview Questions & Answer
WORK AT HEIGHT SAFETY PICTORIAL TRAINING
TWA – Time weighted Average (H2S)
Ans.: as per ACGIH new
recommendation for an eight-hour time weighted average (TWA) exposure limit
concentration of 1PPM and the 5ppm short-term exposure limit (STEL).
What is Residual Risk?
Ans.: The Existing risk after
implementing the control measure.
What are the Main hazards in
Excavation activity?
Ans.: Underground utilities, Collapse
of excavation wall/Cave in, limited access and egress, presence of toxic gases,
falling of person, falling of vehicle, falling object on the person who ever
working in excavation. Adverse weather.
What are the inspection you have to
on crane during visual inspection?
Ans.: Outrigger, ASLI (Automatic
Safe Load indicator –to warn crane being over loaded), ATB Device (Anti Two
block device) - it is an electro sensing device to prevent the contact of boom sheave
assembly point and hook assembly.
LMI (Load Moment indicator) – it
shows load limit, radius limit, top height limit, wind limits, Safety Latch, Anemo
meter and hydraulic leakages.
How you know that crane can lift
this much of tones in this radius? What are the key documents for lifting permit?
Ans.: a. By checking Load chart
b. RA, MS, Lifting plan, load test
certificates of equipment, gears, competency certificate of employees, zone 2
certificate of crane etc.
What are the precautions for Hydro
testing?
Ans.: Don’t forget to tell this
first.
All fittings, joints, flanges,
blinds & hoses shall be rated.
All the Gauges shall be calibrated
and certified.
Pressure safety Valve shall be
installed in test line to prevent the test pressure being exceeded.
Whip arrestor shall be provided for
all joins.
All gauges shall be installed in a
safe distance from equipment and should be visible to operator.
What are the Terminology for the
scaffolding as per BS 1139?
Ans.: Bay length (Distance of two
standards), Kicker lift, Standard, Ledger, Bracings, Outriggers, toe
board (the upstand at the edge of
the scaffolding platform)-150 mm height. Scaffolding planks (225mm
and 37 mm thickness) mid rail (40cm
- 45 cm height).Top rail (90cm- 1 mtr. Height).
HOT WORK PERMIT TO WORK ( PTW )
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