Environmental Influence; Inspection Service; Maintenance - Thiele TWN 0121/1 Operating Instructions Manual

OPERATING INSTRUCTIONS
LIFTING POINTS
SCREW TYPE
Type Temperature range
-20 °C ≤ t ≤ 100 °C
- 4 °F ≤ t ≤ 212 °F
TWN 0121/1
100 °C < t ≤ 205 °C
TWN 0122
212 °F ≤ t ≤ 400 °F
TWN 0127
TWN 1120
205 °C < t ≤ 250 °C
TWN 1884
400 °F ≤ t ≤ 482 °F
TWN 1890
250 °C < t ≤ 300 °C
482 °F ≤ t ≤ 572 °F
-30 °C ≤ t ≤ 205 °C
TWN 0123
-22 °F ≤ t ≤ 400 °F
TWN 1830
200 °C < t ≤ 300 °C
400 °F ≤ t ≤ 572 °F
If lifting points have been exposed to temperatures
exceeding the maximum values specified they must not
be used furthermore.
TWN 1830 and TWN 1884:
Take care for a loss of lubricant depending on several fitting
positions and higher temperatures. A higher wear may occur.
Shorten the inspection interval for that case.
7.4

Environmental Influence

Lifting points must not be used in environments where acids,
aggressive or corrosive chemicals or their fumes are present.
Hot-dip galvanizing or a galvanic treatment is also prohibited.
7.5 Especially Hazardous Conditions
The degree of danger when used in offshore applications, the
lifting of hazardous loads, such as for example liquid metal or
similar, risk potentials have to be assessed by a competent
person in the form of a risk analysis. Any additional rules and
directives must be followed in this case.
8. INSPECTION, MAINTENANCE, DISPOSAL
8.1 General
Inspections and maintenance must be arranged by the Owner!
Inspection deadlines shall be determined by the Owner!
Visual inspections must be carried out and documented by
competent and trained persons regularly but at least once a
year, or more frequently if the lifting points are in heavy-duty
service. After three years at the latest, they must additionally be
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Remaining WLL
100 %
85 %
80 %
75 %
100 %
90 %
B11098-B
US 11.2020
examined for cracks. A load test is not a substitute for this
examination.
The results of the inspection shall be kept in a file that has to be
set up for each lifting point before first use. The register will
show characteristic data as well as identity details.
Immediately stop using lifting points that show the following
defects:
• missing or illegible identification/marking,
• deformation, elongation or fractures,
• cuts, notches, cracks, incipient cracks, pinching,
• no freely rotating or turning possible,
• heating beyond permissible limits,
• severe corrosion,
• wear exceeding 10 %, for example in the ring diameter,
• defect screws.
TWN 1830:
Take out of service if gap size „s" exceeds values in table below.
Max. gap size „s" for TWN 1830
Thread size s [mm]
M10 – M20
M24
M30
M36
M42 – M64
M72 – M100

8.2 Inspection Service

THIELE offers inspection, maintenance and repair services for
lifting points performed by trained and competent personnel.

8.3 Maintenance

Maintenance and repair work must only be performed by
competent and trained persons.
Minor notches and cracks at suspension links may be eliminated
by careful grinding observing the maximum cross section
reduction requirement of 10 % and avoid making more severe
cuts or scores.
All maintenance and repair activities are to be documented.
8.4 Disposal
All components and accessories of steel taken out of service
must be scrapped in accordance with local regulations and
provisions.
1.5
2.0
2.5
3.0
3.5
4.0
# change indicator
replaces B11098-A
8 | 9