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LIGHTNING PROTECTION ASSESSMENT STUDY AS PER OISD-GDN-180 & IEC 62305 FOR HPCL SECUNDERABAD TERMINAL

Hindustan Petroleum Corporation Limited (HPCL) has awarded iFluids Engineering to carry out a Lightning Protection Assessment Study for its Secunderabad POL Terminal. The Terminal, is used for the purpose of receipt, storage, and dispatch of petroleum products (POL) such as Motor Spirit (MS), Bio Diesel, High Speed Diesel (HSD), ATF (Aviation Turbine Fuel), Superior Kerosene Oil (SKO), Ethanol and Hexane.

The HPCL POL Terminal is spread across following areas .

  • Land Area – 58.59 Hectare
  • Plant Area – 40.47 Hectare
  • Green Belt – 12.82 Hectare
  • Truck Parking Area – 5.5 Hectare

A lightning strike is an electrical discharge between the cloud and the earth. It is a natural, unpredictable phenomenon having independent current source causing severe damage to life and property. Direct hits may cause structural failure whereas indirect hits, through inductive or capacitive coupling, may affect the reliability and integrity of electrical and electronic equipment within the structure.

Conventional method of lightning protection system consists of lightning masts / rods exposed and placed at the highest levels of structures and connected through downward conductors to a grounding system. A design method is normally used to identify the most suitable locations for the lightning masts / rods, based on the area of protection offered by each one

Objective of the Study

To conduct Lightning Protection Assessment Study to ensure that the entire plant area including structures/buildings and tank farms are safe from lightning phenomena . This is to be done based on Lightning Protection Standard OISD-GDN-180 & IEC 62305.

The LPS is installed throughout the plant site including structures/buildings and the tank farm area, by means of down conductors and earth pits.

Facilities to be covered under the study includes

  • Motor Sprit 2
  • SLOP tank 1
  • Ethanol/MS tank 1
  • High Speed Diesel 3
  • Motor Sprit 2
  • Superior Kerosene Oil 1
  • Motor Sprit 1
  • Aviation Turbine Fuel 2
  • High Speed Diesel 2
  • Ethanol 1
  • Ethanol 1
  • SLOP tank 1
  • U/G ground vessels
  • Administration building
  • Amenities Building
  • Security office
  • Control Room cum Emergency control center
  • VVSPL control room
  • VVSPL Sulphur analyzer
  • Purfural dosing facility
  • DG set
  • Lab building
  • Foam shed (2 nos)
  • Warehouse-1,2
  • Fire pump house
  • Calibration tower
  • Fire tender shed
  • Calibration tower
  • Compressor shed
  • Terminal Substation
  • ETP
  • Product pump house
  • Bio diesel pump shed
  • Security ingate room

Scope of work

  • To review existing lightning protection arrangements in all the structures/buildings and check adequacy
  • To review and assess necessity of lightning protection for all the Tank Farms
  • To review coverage of lightning protection provided by the high mast lighting poles with air terminals
  • To review the road Loading gantry sick tanker bay, ETP area ,and provide recommendations if any
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