cranes and derricks part 2

Question 1

All belts, gears, pulleys, or any other moving parts must be _____ to prevent possible worker contact.

Answer 1

guarded

Question 2

All cranes must have an _____ on hand for the crane in use.

Answer 2

operators manual

Question 3

Minimum clearances between energized power lines and crane operations:

Answer 3

1. No closer than 10 feet - up to 50 kV

2. Over 50 kV – 10 feet plus 0.4 inches for each 1kV over 50 kv

Question 4

Where cranes must operate in proximity to energized power lines, What to things must be done?

Answer 4

1. Lines must be deenergized and visibly grounded at the point of work
2. Insulating barriers must be erected to prevent physical contact with the lines

Question 5

An observer must be designated if it is difficult for operator to determine ____ clearances by visual means

Answer 5

power line

Question 6

All overhead wires must be considered _____ unless line owner or utility indicates it is not and it has been visibly grounded.

Answer 6

energized

Question 7

Should the crane contact power lines, the operator must _______ if it is at all safe to do so.

Answer 7

stay in the crane

Question 8

If the operator MUST leave the cab due to imminent danger, they must jump free and clear, without _____.

Answer 8

touching the crane

Question 9

If in contact with a high voltage power line, the power companies recommend the operator ____ the feet as they move away from the crane

Answer 9

hops or shuffles

Question 10

Two rules for hammerhead tower cranes

Answer 10

1. Employees required to work on the horizontal boom (load jib) must be protected from falls by guardrails or personal fall arrest equipment
2. Buffers must be provided at both ends of the travel of the trolley

Question 11

Overhead & Gantry Cranes five rules to follow

Answer 11

1. An audible alarm system must be provided for each traveling mechanism
2. Does not apply to floor operated units
3. Rail sweeps must be provided
4. Rated load capacities must be plainly marked on each side of crane
5. If more than one hoisting unit, each load block must be marked with rated load and be visible from ground or floor

Question 12

Crane Suspended Personnel Platforms use is prohibited unless.

Answer 12

1. Conventional means of reaching work site would be more hazardous – or
2. Not possible because of structural design or work site conditions
3. If used, must be designed by a qualified engineer or qualified person competent in structural design

Question 13

In Crane Suspended Personnel Platforms hoist drum must have ____________. Free fall is prohibited.

Answer 13

controlled load lowering system

Question 14

Platform for Crane Suspended Personnel platforms must be equipped with:

Answer 14

1. Guardrail system (per subpart M)
2. Grab rail inside perimeter of platform
3. Plate or marking indicating weight of platform and rated load capacity

Question 15

When working with crane suspended personnel platforms, hoisting of _____ must be performed in a slow, controlled manner.

Answer 15

Personnel

Question 16

When working with Suspended Personnel platforms, cranes must be equipped with _______ or system which deactivates hoisting action.

Answer 16

anti-two blocking device

Question 17

When working with suspended personnel platforms, safety latch on hook must be able to positively close & lock the _______.

Answer 17

throat opening

Question 18

When dealing with Crane Suspended Personnel Platforms, a trial lift must be completed as follows:

Answer 18

1. Unoccupied platform loaded to anticipated lift weight
2. Perform immediately before placing personnel in platform
3. Repeat whenever crane is moved to new location or returned to a previous location

Question 19

When dealing with Crane Suspended Personnel Platforms, a pre-lift meeting must be attended by the

Answer 19

1. crane operator
2. signal person
3. person responsible for task to be performed

Question 20

When dealing with Crane Suspended Personnel Platforms, a meeting to review OSHA requirements regarding platform use ______.

Answer 20

Must be held at each new work location.

Question 21

Why do cranes overturn?

Answer 21

Improper set up

Question 22

What are the two categories in Ground/Crane Condition that cause crane overturn? This accident makes up for what percent of crane overturn?

Answer 22

1.Ground unstable
2.Crane and/or ground not level
This accounts for 31%

Question 23

What are the two categories in Outrigger Deployment that cause crane overturn? What percent of crane overturn is caused y this accident.

Answer 23

1. Outriggers improperly deployed
2. Inadequate blocking/cribbing
   This accounts for 22%

Question 24

What are the two most common factors that cause Overloading? What percent of accidents are caused by overloading?

Answer 24

1. Load weight greater than thought
2. Load chart/computer ignored or misinterpreted
   16% of accidents are caused by this.

Question 25

What are the two most common factors that cause Operator Error? What percent of accidents are caused by this? 

Answer 25

1. Inexperience/unfamiliarity with equipment 2. Dynamic loading(sudden starts/stops) 31% of accidents are caused by this.

Question 26

Helicopter operations four rules

Answer 26

1. Must comply with FAA regulations 2. Must have pre-lift briefing daily 3. Cargo hook must have emergency release mechanism 4. Constant communication between pilot & ground signalman maintained in manner predetermined

Question 27

Material Hoists, Personnel | Hoists, and Elevators four rules to follow.

Answer 27

1. Maximum operating loads & speeds must be posted 2. All operations must follow manufacturer’s specifications 3. Entrances to hoist ways must be guarded 4. Secondary arresting device required on all hoists & elevators

Question 28

Personnel hoist. The only person who should be able to open the door to each floor is the ____.

Answer 28

hoist operator

Question 29

``` Poor set up. Employees should never be allowed to ______ to catch a ride on the hoist due to the fall hazard. Doorways must be arranged so that only the hoist operator can open the door to the building. ```

Answer 29

walk outside the building

Question 30

Base-Mounted Drum Hoists three rules to follow.

Answer 30

``` 1. Design, construction, inspection, operation & maintenance must meet manufacturer requirements 2. All controls must be within easy reach of operator 3. All exposed moving parts must be guarded ```

Question 31

Four rules for conveyors.

Answer 31

1. Must meet ANSI B20.1-1957 2. Must have shutoff device at operator station & start-up alarm 3. All moving parts must have contact guards 4. Lockout/tagout required during maintenance or repairs or during any hazardous operations

Question 32

Conveyors must meet ___.

Answer 32

B20.1-1957

Question 33

All conveyors must have ___ at operator station & | start-up alarm

Answer 33

shutoff device

Question 34

When dealing with conveyors moving parts must have ____.

Answer 34

contact guards

Question 35

When dealing with conveyors ____ required during maintenance | or repairs or during any hazardous operations

Answer 35

Lockout/tagout

Question 36

How often must a crane must be inspected | by the competent person?

Answer 36

Daily

Question 37

How many broken wires are allowed within | one lay of running ropes?

Answer 37

6 wires

Question 38

What device is required on cranes that | hoist personnel?

Answer 38

Anti Two Blocking Device

Question 39

How far must crane operations be from | power lines at 50 KV?

Answer 39

10 feet