41) WHAT IS WORK RADIUS?
Is the maximum distance where a certain activities for lifting or rigging jobs in progress.
42) WHAT IS SWL?
Safe Working Load is the maximum load that can apply to the lifting tool, safely
43) WHAT IS LIFTING PLAN?
Is the documents prepare for planning a critical lift by calculating and considering all factors which is going to effect the lift and there by selecting the correct tools and cranes and ensure the safe lifting procedure to be followed for the particular lift, which is used for lifting and what the safe factor is, where the load is lifted, where it is fitted, size and SWL of each lifting tool used JSA and load-chart are attached with it.
44) WHAT IS TANDUM LIFT?
A lift in wich two crane are used for Lifting is called Tandum Lifting.
45) What is excavation?
A man made cut, cavity, trench or depression formed by earth removal.
46) What is trench?
A narrow excavation, where the depth is greater than width
47) What is shoring?
A structure that supports the sides of an excavation and protects against cave-ins.
48) What is different between a flash back arrestor and a check valve?
A check valve allows flow in one direction only. This prevents oxygen reaching acetylene cylinder and acetylene reaching oxygen cylinder in the event of blockage in the torch or line or pressure variations. But a flash back arrestor prevents reverse flow; stop the flow of flame from reaching the cylinder in the event of a flash back or the temperature exceeds a limit (220 degrees f.)
49) How many type of Fall Protection system?
(1) Guardrail system,
(2) Safety Net system.
(3)Personal Fall arrest system (BODY HARNESS)
50) What is the classis of fire and what type of fire extinguishers are used for them?
Class A. Ordinary combustible materials
Example: Wood, Cloth, Plastic, Rubber
Extinguisher- Water, DCP, Foam, CO2, Halon
Class B. Combustible liquids and gases.
Example: Gasoline, Diesel, Oil, Grease, Oil based paint, tar…
Extinguisher- CO2, Foam, DCP
Class C. Energized electrical equipment
Extinguisher - DCP, FM 200, Halon, Carbon dioxide.
Class D: Combustible metals
Example: Magnesium, Potassium, Zinc, Calcium, Titanium
Extinguisher- Metal x-type, Combustatible metal type
51) What is the responsibility of Fire Watch?
Fire watch is the person design to identify and eliminate fire hazards, alert and extinguish fire incase of any out break of fire and to protect the person and properties from a fire. He is the man to reach first in case of fire by keeping a close watch on such hazardous areas.
52) What is color coding system?
This system followed to inspect and insure the serviceability of tools, equipments periodically ( normally it is monthly ) like fire extinguishers, full body harness, lifting gears, electrical codes and power tools, etc. These things are inspected by competent person and are indicated by putting the color of particular month (this color is decided in advance and is being followed by all people at particular site). The items which are found defective or unserviceable will not be color coded and has to be removed from service.
53) Who can color code?
Competent person
54) What is the maximum distance between two adjacent accesses in a long excavation?
A ladder must be present within 25feet, of employees working in excavation. In open excavation – At least every 30m on the perimeter, if less than 1.2m deep - At every 7.5m on the perimeter, if more than 1.2m deep
55) When is an excavation considered as a confined space?
If depth is more than 1.2m
56) Who can erect scaffolding?
Certified scaffold
57) Who can inspect the components used for erecting a scaffold?
A competent and certified scaffolding supervisor
58) What is tag system?
A tag system is put on scaffolding, by a competent person, indicating the present condition whether it can be used and whether fall protection needed or not. Red tag – Do not use (is being erected or dismantled) Yellow tag – Can use with 100% fall protection (is incomplete or cannot be completed) Green tag – Safe to use (scaffolding is complete)
59) Who can place a scaffold tag?
Competent person (scaffolding supervisor)
60) What are the details in a scaffold tag?
Location, Maximum loading capacity (kN/m2 or psf), Date erected and date inspected with foreman’s name and signature
No comments:
Post a Comment