Question #517
What is the permissible number of visible cracks in an overhead travelling crane hook?
Jaka jest dopuszczalną liczba widocznych pęknięć haka suwnicy?
a
0
0
Correct answer
b
1
1
c
2
2
d
10%
10%
Why?
No visible cracks (pęknięcia) are permitted in the hook (hak). Even one crack means the hook must not be used for further lifting. Percentage limits may concern wear, but they do not provide an allowance for cracks.