Blohm + Voss Oil Tools 613000-Y-H-F, Original Instructions Manual

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33
MAI
N
TE
NAN
C
E
&
I
N
S
P
EC
TI
ON
Tool Joint Wear Data Drill Pipe
Check for wear of the Bushing/Elevator by measuring the Center Bore diameter. The
maximum wear on the Center Bore is: Nominal size + 0,25 inch.
The following table shows the minimum required Tool Joint diameter, depending on
the Center Bore and rating of the Elevator.
As soon as the Tool Joint diameter falls below the rating line, the Bushing/Elevator or
the pipe has to be changed (Contact B + V or a B + V Authorized Repair Center).
2
3
4
5
6
7
8
9
10
2 3 4 5 6 7 8
Mi
ni
m
um
r
equi
re
d T
oo
l Jo
in
t
D
iam
te
r (
in
ch
es
)
Actual Center Bore (inches)
Tool Joint Diameter "D"
Actual Center Bore "E"
500 t
ons
350 t
ons
250 t
ons
150
ton
s
10
0 t
on
s
1000
tons
750
tons
250 tons
350 tons
500 tons
100 tons
150 tons
1000 tons
750 tons