Installation guide - James Walker
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Installation guide
Best bolting practice BOLTING PRINCIPLES
• Each RotaBolt® stud or bolt is load test calibrated during manufacture to achieve the desired
tension for the application in which it is to be used. Achieving and maintaining
• However, it is still necessary to estimate the tightening force (torque) that needs to be
used, so that the tightening tool selected has sufficient torque power capacity and for any
the correct clamping force,
pre-set requirement. or bolt tension, is essential
• All variants of RotaBolt should be installed following best engineering practice or methodology in assuring bolted joint
prescribed by the site operator to the point at which final tightening is reached.
• Continuing to follow the same tightening pattern, the fasteners should now be tightened until
integrity. 85% - 90% of all
the RotaBolt indicator shows that the correct design tension has been reached. bolted joint failures are
• Torque values are disregarded at this point as the RotaBolt indicator is the ‘control’ for caused by inaccurate bolt
confirmation of the achievement of the design tension setting.
tension at installation.
• At the correct level of tension, the fastener has ‘stretched’ the calibrated amount and the RotaBolt
indicator cap or wireless app dashboard will indicate that the fastener has been installed to within
-/+5% of the design tension for the application.
The method of checking the different types of RotaBolt indicator are detailed on the following pages.
International standards
Although requirements may vary between applications, James Walker engineers will use one of the
following international bolting standards as best practice when installing RotaBolt products.
• ASME PCC-1: Guideline for pressure boundary bolted flange joint assembly.
• BS EN 1591-4: Competency in the assembly of the bolted connections of critical service
pressurized systems.
SAFETY
Throughout all bolt assembly
and tightening processes it is
essential to follow standard
safety procedures and
instructions on any equipment.
The relevant personal protection
equipment should be worn at
all times.
Installation guide
Tension checking BOLTING PRINCIPLES
RotaBolt RB1 Touch
®
Each RotaBolt RB1 Touch is calibrated to ‘lock’ the
The RotaCap on top of
RotaCap at the desired preload tension value on each RotaBolt stud will
installation with an accuracy of ±5%. The cap will
turn freely between finger and thumb until indicate when the correct
‘locking’ when the target tension is achieved. desired tension is achieved
during the tightening process.
However, it is still necessary
to estimate the tightening
force (torque) that needs
to be used, so that the
RotaBolt® RB2 Touch tightening tool selected
The dual load indicator has an outer cap for high has sufficient torque power
tension setting and an inner cap for low tension, capacity and for any
giving the choice of an operational tension range,
either for overload or maintenance control. Both pre-set requirement.
work in the standard RotaBolt fashion, rotating
freely between finger and thumb until ‘locking’
when the target tension is achieved.
RotaBolt® Vision
RotaBolt Vision uses a specially developed
indicator which appears as an unbroken yellow line
across the head of the fastener when the target SAFETY
tension is achieved.
Throughout all bolt assembly
Should tension be lost, the indicator instantly and tightening processes it is
rotates by ninety degrees creating a distinct right
angle break in the yellow line that is easily essential to follow standard
identifiable even from distance. safety procedures and
instructions on any equipment.
The relevant personal protection
equipment should be worn at
all times.
Installation guide
Tension checking LOAD TEST CALIBRATED
RotaBolt Connect
®
• O
pen the App on the mobile device and login.
Each RotaBolt stud or bolt
is load test calibrated during
• A
ctivate the relevant Connect fastener by
placing the magnetic activator close the cap manufacture to achieve
of the fastener and then select the active bolt
on the app.
the desired tension for the
application in which it is
• P
ress ‘Install’ to open the installation screen.
to be used.
• Y
ou will now see a load reading or percentage of
target load traffic light display (you can toggle
between these), which will change as you tighten
the fastener.
• T
he display will show orange whilst tightening
until the target load is achieved, when it will
change to green indicating that target load
±0.5% of full scale has been reached.
• If the display displays red, this indicates that the
bolt has been over-tightened and target load has
been exceeded.
• O
nce the target load has been achieved SAFETY
press OK to complete the install and set the Throughout all bolt assembly
bolt to collect and transmit data at the
predetermined levels. and tightening processes it is
essential to follow standard
safety procedures and
instructions on any equipment.
The relevant personal protection
equipment should be worn at
all times.
James Walker
Worldwide
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T: +61 2 9721 9500 T: +91 224 0808080 T: +47 22 75 75 00
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Information given in this publication is given in good faith and represents the results of specific individual tests carried out by James Walker or third parties in accordance with the
methodologies described in this publication, performed in a laboratory. No representation or warranty is given in relation to such information. Values and/or operating limits given
in this publication are not an indication that these values and/or operating limits can be applied simultaneously. While such results may comprise useful additional information
and are industry standard tests, they are no substitute for conducting (or procuring from James Walker) your own tests and engineering analysis and satisfying yourself as to
the suitability of the product you select. Please also note that a product tested in accordance with the published methodology may not perform to such values in application
and/or under different test conditions or methodologies for a variety of reasons, including but not limited to the environment in which it is used/tested or which passes through it
or otherwise affects the product, or due to the handling, storage or installation, or due to the effect of housing or other parts. Our personnel will be happy to discuss any historical
examples we have of a product having been previously used in a particular application.
To ensure you are working with the very latest product specifications, please consult the relevant section of the James Walker website: www.jameswalker.biz.
James Walker Sealing Products & Services Ltd
Registered Office: Lion House, Oriental Road,
Woking, Surrey GU22 8AP, United Kingdom.
Reg no: 00264191 England
Issue number 1
© James Walker 2021 JW4773 0621/PDF
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