PA S.p.A.
USER MANUAL FOR WATER-DRIVEN ATEX TANK
CLEANERS
INGLESE
PQ02-A13
Revisione: 09
Del: 01/09/2016
Codice: PQ02-A13
Pagina 6 di 8
temperature must not be higher than 80% of the minimum temperature ignition of the Gas measured in ° C.
Naked flames and hot gas
Naked flames and hot gas are forbidden around the head.
Mechanical sparks
Sparks have to be excluded during a normal function even if they can occur in case of foreseen and rare
dysfunctions; they can be caused by friction, knocks or abrasion, hammering.
Ultrasounds (acoustic danger)
Tank measurement is forbidden when the head is in function.
Electric currents and protection against cathode corrosion. Static electricity.
Earth connect all the wires which could dangerously charge through certain connection points.
Adiabatic compression and shock waves.
The process that can cause adiabatic compression or shock waves are not tolerated. Verify the normal
function of the wash fluid in the adduction systems.
Exothermic/Endothermic reactions, including self-ignition of powders.
Wash fluids with endothermic characteristics or reactive with water and impurities are forbidden.
Excessive vibrations and stress.
Stress derived from vibrations, especially transmitted by the tube connections and other connected
apparatus are forbidden; where such conditions cannot be guaranteed, appropriate measures must be taken
to reduce to the minimum such phenomena.
Back pressure
An elevated back pressure to the nozzles acts negatively on the head compromising the set calibration. The
nozzles must be exempt from back pressure: They must not be blocked and no flow from the nozzles
towards the inside of the head is permitted.
Ambient risks.
Ambient conditions different than those specified from the EN 1127-1:
2011,
can cause a danger source.
They can cause dangerous service conditions (with relation to the processed fluids) an abrupt movement,
humidity effects, ambient temperatures and pressure changes, chemical agents, corrosion.
The working process in the installations must be carried out in such a manner to be not determined by a
dangerous influence.
Refrain from the functioning of the head in case of evident irregularities.
The rupture of some
components provoke a non hydrokinetic function of the head.
2.3.5. PPE (Personal protective equipment)
& Procedures Training
The choice of
PPE (Personal protective equipment)
is user
’s responsibility according to the DLgs 81/08
(Italian regulation)
, predicting the following residuary risks:
-
Hot surface temperatures
-
Electrostatic charges
-
Infiammable liquids, noxious substances, etc
-
Others in relation to type of use
The use of the head must foresee a precise training formation.
It is necessary to pertain to the application of the legislative decree 81/08
(Italian regulation)
and successive
modifications.
2.4. System Procedures
