EN Catalog 2021-22 - Catalog - Page 38
ELECTROFUSION SAFETY
•
UPP® welding units must never be operated in Zone 1 or Zone 0 areas (Hazardous area definitions are from IP Model Code of
Safe Practice Part 15 and are available in the APEA Blue Book 2nd Edition).
•
UPP® welding units are suitable for use in Zone 2 areas with just the welding leads and fitting being welded positioned in a
Zone1 area.
•
Ensure welding units are connected to a power supply that meets the requirements detailed in the user manual and are within
the requirements of any local authority or regional legislation.
•
•
UPP® piping complies with all the requirements imposed by EN14125:2013 concerning electrostatic safety.
•
The safety of UPP® systems rely upon the small capacitance and hence the small energy that they can accumulate. This
energy, has been demonstrated to be well below the Minimum Ignition Energy or MIE required to ignite petrol or alcohol
blended fuel.
•
Extensive studies simulating fuel flow situations much more severe than what can be found in underground pipework at
petrol filling stations have demonstrated that UPP® pipe cannot be a source of spark ignition. For this reason UPP® pipe can
be considered an inherently safe system with respect to the electrostatic risk.
•
The most important recommendation, common to any type of piping system is to connect safely to ground all metallic
components. Metallic components, and more general conductive materials, thanks to their high capacitance can have the
potential to store high amount of electrostatic energy (sparks discharge can only be observed over conductive elements).
•
All exposed metal parts used in UPP® System installations should be adequately grounded to a dedicated earth electrode and
brought to a potential equal to that of other metal parts in the close proximity.
The risk assessment against electrostatic hazard has demonstrated that the use of insulating material such as that used in
UPP® piping results in a safe choice.
All UPP® metal transition fittings in the fill box, at the tank top and under the dispenser should be adequately earthed
according to local electrical regulations. If in doubt the resistance of grounding should be ≥ 100k ≤ 1M. Earthing cables
should be plastic covered copper conductors of at least 4mm² cross sectional area and should be connected to an exclusive
earth electrode.
WPP
Caps
Note: The metal fittings atthe tank
manhole
should
be at equal
potential so additional cables
may
be required
to interconnect
the
metal fittings.
The drawings show how to ground various types of UPP® metal
transition fittings:
≥ 100k
≥ 100k ≤ 1M≤1M
Earthing
cables
should
be plastic
covered
copper
conductors
at least
4mm²
Earthing
cables
should
be plastic
covered
copper
conductors
of at of
least
4mm²
≥ 100k
1Mearthearth
cross
sectional
area
and should
be connected
toexclusive
an≤exclusive
electrode
cross
sectional
area
and
should
be
connected
to
an
electrode
Earthing cables should be plastic covered copper conductors of at least 4mm²
≥
100k
≤atbe
1M
cross
sectional
areafittings
and
should
connected
to
an
earth
electrode
Note:
The metal
attank
the be
tank
manhole
should
atequal
potential
Note:
The
metal
fittings
at the
manhole
should
beexclusive
equal
potential
so additional
cables
may
be
required
to interconnect
the metal
Earthing
cables
should
be
plastic
covered
copper
conductors
of atfittings
least 4mm²
so
additional
cables
may
be required
to interconnect
the metal
fittings
Note: The
metal
fittings
at the
manhole to
should
be at equalearth
potential
cross sectional
area
and
should
betank
connected
an exclusive
electrode
so drawings
additional
cables
may
to
interconnect
metal
fittings
The
drawings
show
how
torequired
ground
various
types
ofthe
UPP
metal
transition fittings
The
show
how
to be
ground
various
types
of UPP
metal
≥ 100k
≤ 1M
transition fittings
Note: The
metal
fittings
at the
tank manhole
shouldconductors
be at equal
potential
Earthing
cables
should
be to
plastic
covered
copper
of at
least 4mm²
The drawings
show
how
ground
various
types of UPP metal
transition
fittings
so additional
cables area
may and
be required
interconnect
the metalearth
fittings
cross sectional
should be to
connected
to an exclusive
electrode
fibreglass
with threaded
transition
fibreglass
entryentry
seal seal
with threaded
transition
fibreglass entry seal with threaded transition
Note: The
metalhow
fittings
at the tank
manhole
should
be at metal
equal potential
The drawings
show
to ground
various
types
of UPP
transition fittings
so additional cables may be required to interconnect the metal fittings
The drawings show how to ground various types of UPP metal transition fittings
fibreglass entry seal with threaded transition
WPP
Caps
fibreglass entry seal with threaded transition
electrofusion
with compression
transition
electrofusion
entryentry
seal seal
with compression
transition
electrofusion entry seal with compression transition
electrofusion
with stub
flange
transition
electrofusion
entryentry
seal seal
with stub
flange
transition
requires
earthing
requires
earthing
strapstrap
electrofusion entry seal with stub flange transition
requires earthing strap
electrofusion
entry
sealwith
withcompression
compression transition
electrofusion
entry
seal
transition
WPP
Caps entry seal with stub flange transition
electrofusion
requires
strap
electrofusion entry
seal with stub
flangeearthing
transition
requires earthing strap
WPP
Caps
mechanical
with threaded
transition
mechanical
entryentry
seal seal
with threaded
transition
mechanical entry seal with threaded transition
electrofusion
with integrated
flanged
termination
electrofusion
entryentry
seal seal
with integrated
flanged
termination
requires
earthing
requires
earthing
strapstrap
electrofusion entry seal with integrated flanged termination
requires earthing strap
electrofusion entry seal with integrated flanged termination
requires earthing strap
electrofusion entry seal with integrated flanged termination
requires earthing strap
mechanical
38
mechanical
entry seal
with
threaded transition
entry seal
with threaded transition
