Design & Selection Aspects Dip Pipe Earthing Jumpers Flange Guard Earthing Strips Rupture Disc PSV & PRV Flame Arrestor

2. Reactor Safety Aspects:
•Design & Selection Aspects
•Dip Pipe
•Earthing Jumpers
•Flange Guard
•Earthing Strips
•Rupture Disc
•PSV / PRV
•Flame Arrestor

3. Design & Selection Aspects:
•Pressure:
•MAWP (Maximum Allowable
Working Pressure): The maximum
pressure based on design codes that
the weakest component of pressure
vessel can handle.
•Design Pressure: The Pressure to
which system can be exposed.
•Below than MAWP
•It is 10-25% of Max. Operating
Pressure.
•Operating Pressure: Maxi. Pressure
during process inside reactor
Note: All Pressure details are given on
MOC Plate
Reactor Design Pressure
= 1.5 X Operating Pressure

4. Design & Selection Aspects:
•Temperature:
•Design Temp.: The Temp. up
to which reactor can be
exposed.
•Operating Temp.: Safer
Operating limit of
temperature.
•Tells us about the utilization
of equipment in particular
temp. range.
Note: All Temp. details are given
on MOC Plate

5. Design & Selection Aspects:
•Other Information On plate:
•Hydro Test
•Weight Without Load
•Weight with Load
•Capacity

6. Design & Selection Aspects:
• MOC Based on Chemical Compatibility Study
• SS | MS for Alkali Nature
• GLR | Rubber Coated | PTFE For Acids
• Hastelloy for both

7. Dip Pipe:
• Dip Pipe: Used in Addition of
Liq. RM from Addition tank.
• It Prevents splashes of
chemical to reactor
• Hence decrease the chances of
static charge generation
• In case of metallic reactor also
act as dissipater of static
charge

8. Earthing Jumpers:
• Provide connectivity in pipe
line
• Prevent static charge
accumulation when solvents
flows through pipes.
• Hence Decrease the chance of
fire or explosion.

9. Flange Guards:
• Prevent the splashes of
hazardous chemical to near by
area or on human during
sudden gasket failure.
• Hence decrease the hazard
associated with it.

10. Earthing Strips:
• Provide connectivity in
equipment to earth the
generated charge directly to
ground
• Prevent static charge
accumulation when solvents
flow through line or agitated
inside the reactor.
• Hence Decrease the chance of
fire or explosion.

11. Rupture Disc:
• It is a non reclosing pressure relief
safety device actuated by static
differential pressure between inlet
and outlet of device.
• One time use membrance
• Protects a pressure vessel,
equipment or system from over
pressurization or potentially
damaging vacuum conditions.
• Design to function by bursting of
rupture disc upon pressure exceed
the operating limit.
• It is 0.002 – 0.060 inch in thickness.
• Pressure Setting: 10% Above DP &
20% above OP

12. PRV | PSV:
• A type of safety valve used to control
or limit the pressure in a system,
pressure might otherwise build up and
creates a process upset, instrument or
equipment failure.
• Pressure is relieved by allowing the
pressurized fluid to flow through an
auxiliary passage out of the system.
• When the set pressure is exceeded, the
relief valve becomes the path of least
resistance as the valve is force open
and a portion of the fluid is diverted
through the auxiliary route.
PSV | PRV Setting: 21% Above the
DP & 11% above the Rupture Disc.

13. Flame Arrestor:
• A device fitted to the openings (vent)
of an enclosure or to the connecting
pipe work in a system of enclosures
and which allows gases, liquids etc.,
to pass through it but prevents the
transmission of the flame in order to
prevent the larger fire or explosion.
• The Use of flame arrestor:
• Stopping the spread of fire.
• Limiting the spread of already
occurred explosion
• Preventing potential explosive
mixture from ignition.
• Confining the fire within a
controlled location.