In an LPG plant the fire protection system is the one that has to work first time. We engineer the logic that makes it do so.
Each zone has break glass units, manual call points and a loop of quartzoid bulbs that burst in the heat of a fire. Gas detectors watch for LPG at low level.
We automate:Detection loop supervision with open and short-circuit monitoring, BGU and MCP inputs, LEL alarm levels, and voting where the design uses it.
A dedicated PLC reads every detector and decides what happens in each zone from a cause and effect matrix agreed with the plant.
We automate:Cause and effect logic per zone with fail-safe outputs. On LEL high it closes the ROVs and trips the LPG pumps through the ESD.
The zone's deluge valve opens and medium velocity nozzles cover the sphere in water to keep it cool, as OISD-STD-144 requires.
We automate:Deluge valve actuation from detection or from the control room, open and closed feedback, and an alarm if the valve does not move.
A jockey pump keeps the ring main near 7 bar. When a deluge valve opens the pressure falls and the main fire pumps start one after another.
We automate:Jockey pump pressure control, fire pump auto-start sequence on pressure, diesel engine status, run hours and monthly test counters.
A pressurised loop of fire water pipe runs around every zone and feeds the deluge valves and hydrants, so water is there the moment a valve opens.
We automate:Ring main pressure on SCADA with low-pressure alarms and trends, so a leak or a jockey pump that runs too often shows up early.
The zone on fire lights up on the digital fire clock at the plant gate, the hooter sounds and the alarm appears on SCADA in the control room.
We automate:Zone annunciation on the digital fire clock, SCADA fire screens, SMS alerts, and a time-stamped event log for the OISD auditor.
Each area of the plant has detection: break glass units, manual call points and fused bulb (quartzoid) detector loops. When fire is detected, that area's deluge valve opens and water sprays from a pressurised ring main. The pressure drop that follows starts the fire water pumps in a set sequence. A small jockey pump holds the ring main above about 7 bar at all times, compensating for leakage, so water is available the instant a deluge valve opens. This is the medium-velocity water spray and deluge arrangement OISD-STD-144 requires for LPG installations.
When a detector sees fire, the right valve opens, the pumps start in the right order and the pressure stays up until the fire is out. Nobody has to be at the pump house.
OISD-144 compliance is inspected. A fire water system that fails to sequence pumps or hold pressure is the finding that stops a plant.
Two to four months, usually inside a plant automation job.
Attach these to your enquiry. The three marked essential are enough for us to start a budget.
Each zone gets its own detection loop and deluge valve logic, so we start from the map.
It lists every input and output the logic has to handle.
We design to close the findings instead of repeating them.
Pump sequence and start on low pressure depend on whether each pump is motor or diesel driven.
These set the pressure hold and the trip level that starts the main pumps.
We need to know whether signals arrive as 4 to 20 mA, relay contacts or serial data.
It decides barriers and the certification of field devices.
Function tests need water on the ring main and the plant's permission to discharge.
Do not have all of it? Send what you have; we work from a site visit for the rest.
Overall: Two to four months, usually inside a plant automation job.
Every plant is different, so we price from the I/O list and scope rather than a rate card. Send the documents above and you will have a budget figure within a week, and a fixed price after the scope call.
Upgrade of the fire and gas automation at the HPCL LPG bottling plant.
Detection loops trigger the area deluge valve; ring main pressure drop starts fire engines in sequence; a jockey pump keeps the main above about 7 bar, to OISD-STD-144.
Complete LPG plant automation plus the full fire and gas system, executed in about five months.
Deluge valves, break glass units, sequenced fire engines, jockey pump and ROV control. A digital fire clock at the gate lights the zone where fire is detected, mapped across admin, MCC, sheds, pump house, gantry, sphere and bullet areas.
Traditional LPG plants use a mechanical rotating arrow at the gate to show which zone is on fire. Our digital version is a lit zone map driven by the fire and gas PLC, so anyone entering the plant sees the affected area immediately.
Yes. We integrate addressable fire panels, gas detectors and existing deluge valves into the PLC and SCADA on brownfield sites.
Complete plant control from one control room: tank farm, pumps, carousels, interlocks and OISD-214 data sharing with the pipeline.
Metering skids, flow computers and meter provers, where the measurement settles money and has to stand up to audit.
Dispatch and receipt terminals on redundant PLC and SCADA, so a single failure never stops the line.
Live tank levels posted to SAP every morning without manual entry, running at about 22 IOCL and BPCL plants.
Tell us what you are planning, even if the details are still rough. We reply with a technical approach and an offer.