Document No LM0670 Issue A Rev 2 November 2017 Page 5 of 15
MECHANICAL INSTALLATION:
The end user of the equipment shall be responsible for the following actions during the installation of
the equipment to ensure compliance with the Essential Safety Requirements (ESR) of the PED Directive
97/23/EC and 2014/68/EU. The relevant requirements of the PED are listed below:
PED
ESR Ref
ESR Requirement Compliance Requirement
2.3 Provision to ensure safe handling and
operation.
The method of operation specified for
pressure equipment must be such as to
preclude any reasonably foreseen risk in
operation of the equipment. Attention must
be paid, where appropriate, to the following:
Devices to prevent physical access while
pressure or vacuum exists.
Surface temperature
Decomposition of unstable fluids.
It is the end user’s responsibility to ensure that the equipment
is sufficiently protected from additional stress due to traffic,
wind, earthquake loading, corrosion, erosion, fatigue,
decomposition of unstable fluids, reaction forces and
moments which result from the supports, attachment, piping
etc. Pressures that exceed the meters maximum rating shown
on the calibration certificates, Temperatures that exceed
those shown on the calibration cert.
The end user shall ensure that the flowmeter is installed in a
properly designed system with access limitation in place if
required.
It is the responsibility of the end user to assess the expected
surface temperature of the meter once in service, and if
necessary, take the necessary precautions to avoid personnel
coming into contact with the equipment.
The end user should assess the risk and take any steps
necessary to avoid the meter coming into contact with
unstable fluids.
2.4 Means of Examination.
Pressure equipment must be designed and
constructed so that all necessary
examinations to ensure safety can be carried
out.
Litre Meter VFF Flowmeters are designed so that all critical
parts are contained within the meter body and cannot be
examined while in service. The end user should refer to the
operations and maintenance instructions supplied with each
meter.
2.5 Means of draining and venting.
Adequate means must be provided to avoid
harmful effects such as water hammer,
vacuum collapse, corrosion and
uncontrolled chemical reactions.
It is the responsibility of the end user to ensure that the meter
is installed in a well-designed piping system to avoid such
hazards.
2.6 Corrosion or other chemical attack.
The meter has been designed using materials that should not
result in severe corrosion problems. It is the end user’s
responsibility to monitor any change in the process medium
that may cause concern.
2.7 Wear. It is not expected that the use of the meter for flow
measurement will give rise to any abnormal wear problems. It
is the responsibility of the end user to maintain the condition
of the process medium.
2.9 Provisions for filling and discharge. It is the responsibility of the end use
to avoid hazards during
filling and discharge.
2.10 Protection against exceeding the
allowable limits of the pressure
equipment.
The meter must be installed in a well-designed piping system
with adequate protection against excessive pressure. – see
also 7.3
2.12 External fire. The meter has no special accessories for fire damage
limitation. It is the responsibility of the end user to provide
adequate fire-fighting facilities on site.
7.3 Pressure limiting devices, particularly for
pressure vessels.
The VFF meter has no integral pressure limiting devices. It is
the responsibility of the end user to ensure that it is installed
in a well-designed system so that momentary pressure surges
are limited to under 10% of the meter’s maximum allowable
pressure.
