7. • Safety Standard
– EN 378 : Refrigerating systems and heat pumps
Safety and environmental requirements
– ISO (DIS) 5149: Refrigerating systems and heat
pumps - Safety and environmental requirements
– IEC 60335-2-40: Particular requirements for
electrical heat pumps, air-conditioners and
dehumidifiers
– SNI-06-6500-2000 – Refrigerant application for
fixed Installation
8. • Safety Aspect
– Unit Construction must be consider for avoid
Triangle of Fire Condition occurs. Eliminate at
least one factor, preferable two factor i.e
Ignition and Refrigerants concentration.
– Charge Limitation for Direct system
(Refrigerant circulated to the Room)
– Electrical control box with ATEX Spec.
– All Control & Accessories without Sparks
9. • Concern to component w/ large amount of
Refrigerant – Condenser Coils
– Separate with other component & parts
– Free space at bottom
because R290 gas
heavier than air.
– Good Ventilation
10. • Eliminate for all electrical component that
have potential to produce sparks, ensure :
– Placed on appropriate enclosure
– Replace with solid
state contact or
explosion proof spec
– Locate externally
11. • Compressor
Anti Static Electric Box
Cable Conduit
12. • Heat Exchangers. According to minimize the
charge, select the smaller volume.
Conventional Fins and Tube, Advanced HX with 40% Reduce Volume
can Maximizing the Airflow to Reduce Size Microchannels Technology for Condenser
13. • Heat Exchangers. According to minimize the
charge, select the smaller volume.
Shell n Tubes Coolers for Chillers Braze Plate Heat Exchanger BPHE
Very Large of Volume 85 % Reduction in Volume of S&T
14. • Other Parts & Accessories
Must be specialized
For HC Refrigerants
15. • Using HC Refrigerant will take changes to
safety of production line
18. • Refrigerant Handling and Storage
• Rules for R290
refrigerant cylinders
usually same as any
flammable gas cylinder
– Store outside – follow local
regulations for LPG, if none at least:
☺ In a locked cage
☺ At ground level (never below)
☺ Away from air intakes to building
☺ Remote from ignition sources
No smoking
19. • Location & Positioning would generally be
within the requirement of Relevant
Standards
– Located Outside
(Open Air), unit
should be positioned
to avoid refrigerant
leaking into the
building
20. – Located Inside in a
Machinery room,
occupied space, or
within a ventilated
space enclosure,
specified in EN 378-1
21. • Training
– Design engineers technical and safe handling
– Production workers basic safe handling
– Production technicians thorough safe
handling
– Service technicians thorough safe handling
