Residual Risks; List Of Residual Risks For Tg Gs, Gp, Gm, H And Srt - Johnson Pump SPX FLOW TopGear GS Instruction Manual

1.10 Residual risks

List of residual risks (after risk analysis according to EN ISO 80079-36).

1.10.1 List of residual risks for TG GS, GP, GM, H and SRT

Potential ignition source
Normal Expected
operation malfunction
Exposed to
hot surfaces
of pump
casing
Excessive heat
accumulation
Exposed to
hot surface
of bearing
bracket
Excessive
heat at
shaft sealing
-packed gland type
-triple lip-seal
Excessive
heat at
shaft sealing,
mechanical
seal type
Remarks:
• For category 2, the risks at "normal operation" and those at "expected malfunction" have
to be controlled.
• For category 3, the risks at "normal operation" have to be controlled.
12
Measures applied to prevent the source
Rare
becoming effective
malfunction
The customer has to ensure that the
temperature of the pump liquid does not
exceed the permissible temperature.
Additionally, the operator has to ensure
the operating limits for speed, flow and
pressure are not exceeded.
The customer has to ensure a minimum
flow through the pump to evacuate
generated heat or has to monitor the pump
casing temperature.
The bearing bracket must be freely
exposed to the atmosphere to allow
cooling of the surfaces. The operator
must regularly check the tmperature for
good operation and the temperature of
the bearing externals. The grease selected
must be suitable for the ambient and
working conditions.
Internal high Dry running is excluded from normal
temperatures operation.
and/or sparks
The operator has to ensure that the pump
runs with the shaft sealing chamber filled
with the pumped liquid during start, normal
operation and shut-off.
The operator has to ensure good
lubrication of the packing rings and must
regularly inspect the surface temperature
and function. Lip-seal running surfaces
must be greased in order to prevent any
dry-run. The temperature of the shaft bush
must be monitored.
The customer has to follow the specific
instructions for the mechanical seal type
in the instruction manual or/and separate
certificate instructions if present.
Single and double mechanical seals with
quench are to be protected by controlling
the quench liquid.
Mechanical Shaft gland materials are made from
sparks caused by stainless steel to minImize spark risks
contact between (cold sparks).
rotating shaft
Pump may not run dry. Excessive wear of
and stationary
shaft bearings and internals must be
seal gland
prevented through adequate maintenance.
Electrostatic Customer should provide earth
discharges connections or equipotential bridges in
case of indirect risks.
A.0500.601 – Atex IM -TG G/H/MAG/SRT/08.00 EN (01/2021)
Ignition
protection used
EN ISO 80079-36
§6.2
User Instructions
EN ISO 80079-36
§6.2
User Instructions
EN ISO 80079-36
§6.2
EN ISO 80079-37
§5.7
User Instructions
EN ISO 80079-37
§5.6 & §5.7
User Instructions
EN ISO 80079-37
§5.3
User Instructions
EN ISO 80079-37
§5.3
User Instructions
EN ISO 80079-36
User Instructions
EN ISO 80079-36
User Instructions