Safety Facilities at Terminal

Fire Water Tanks

• Total fire water required for fighting two simultaneous fires for 4 hours as per OISD = 9856 KL
• Total fire water available = 10400 KL

Hydrant System Network

• Fire water network of Madurai Terminal is kept in Automatic mode for 24X7.
• Water in the fire water network is always kept at minimum 7 Kg/cm2.

All Fire fighting equipments in the Terminal are well connected with the network

Fire Engines

• 4 main pumps
• 2 standby pumps
• Flow rate : 616 KL/hr
• Diesel capacity (each pump) = 500L

High Volume Long Range Monitors

• 4 nos of HVLRMs are installed in the Terminal.
• These high volume monitors are provided for MS tanks.
• HVLRMs are to be used in roof sinking case, in which foam requirement is very high.
• HVLR is having variable flow of 500/750/1000 GPM
• It has easy maneuverability in horizontal 360°(Manual) & 340° (Remote Controlled) and (+90°,-45°) vertical plane.
• The nozzle of HVLR allows multiple utility modes like Jet, Fog and semi- fog operations.
• The HVLRs installed in our Terminal are remote operated all operations of HVLR are remote controlled.
• These remote control panels are located at a distance of 60m away from the tank to be protected so that easy accessibility is available in case of emergency.
• In addition to 4 fixed HVLR Monitors, Three Mobile HVLRMs are also installed in the Terminal to take care of emergencies on HSD and SKO tanks.

Hydro Carbon Detector (HCD)

• All potential leak sources of MS tanks are fully covered with HCD.
• HCD installed at MS tank dykes, tank manifolds and pump house manifold.
• Alarm for HCD is set at 20% of LEL of MS.

• Power supply to HCD is through UPS for uninterrupted power supply during emergency.
• Upon activation, audio and visual alarm are reported to local and Control Room panel.

Clean agent system

• Control Room is equipped with clean agent system.
• Electrically non conductive,  volatile and gaseous fire extinguishing medium that does not leave any residue upon evaporation.

Hydrants & Monitors

• Hydrants and monitors in the Terminal are provided at all operating areas.
• Installation of hydrants and monitors are done as per standard mentioned in OISD 117 & OISD 244.

Water cum Foam Monitors

• WCF monitors are installed at the Terminal as per standard.
• WCFMs are having multipurpose combination of jet, fog  and spray arrangement.

Portable Fire Fighting Equipment

Portable fire fighting equipments such as fire extinguishers, fire hose, MEFGs, SCABA, short branch pipes, nozzles, Explosivemeter, etc are provided in the Terminal.

Rim Seal Fire Protection System

• RSFPS is installed in all three MS floating roof tanks in our Terminal.
• Contains metallic tube type heat detectors for detection.
• Foam modules of capacity 200L discharge foam after detection.

• Minimum foam application rate is 18 lpm/m^2.
• Foam is discharged in approximately 40 secs.
• Audio visual alarm installed in Control Room & tank farm are activated in case of fire.

Fire water spray system

• Fire water spray system is provided for all MS and HSD tanks.
• Fire water spray system are provided to cool the tanks.
• Provision for 3lpm and 1lpm is provided for each MS and HSD tanks.

                 Foam Pourer System

• Foam pourer system has been provided for all tanks in our terminal.
• Discharges foam at the rate of 1000lpm at a pressure of 7kg/cm2
• Foam tanks are installed for continuous supply of foam.

HAZARDOUS AREAS CLASSIFICATION

The purpose of hazardous area classification is to avoid ignition of those releases, which inevitably occur from time to time in the operation of the facilities handling flammable liquids and gas. The approach is to reduce to an acceptable level the probability of coincidence of a flammable atmosphere and an electrical or another source of ignition.

The definition of a hazardous area is: –

“A hazardous area is defined as a three-dimensional space in which a flammable atmosphere may be expected to be present at frequencies as to require special precautions for the construction and use of electrical apparatus.”

The main reasons for classifying an installation into hazardous areas are:

• To perform the correct selection of equipment according to the degree of hazardous area classification where they are situated;
• To ensure that sources of ignition are segregated from sources of flammable gas or vapour;
• To assist in the appropriate location of ventilation and combustion air inlets and exhausts for buildings and combustion equipment;
• To define the extent of hazardous area around degassing vents;
• To assist in the appropriate location of flammable gas detectors;
• To determine the maximum allowable surface temperatures for particular areas.

The classification of hazardous areas shall only take into consideration events for which the probability of occurrence is significant enough to be described as “liable to occur during normal or abnormal operation conditions”.

• Zone 0 is that part of hazardous area in which a flammable atmosphere is continuously present or present for long periods;
• Zone 1 is that part of a hazardous area in which flammable atmosphere is likely to occur in normal operation; and
• Zone 2 is that part of a hazardous area in which flammable atmosphere is not likely to occur in normal operation, and if it occurs, will exist only for short periods.