Blast Resistance Assessment Of QIT Process Area Buildings

Project     Blast Resistance Assessment Of QIT Process Area Buildings
Client    Mobil Producing Nigeria Unlimited
Country    Nigeria
Project-Period    2008

Purpose:

To establish if there are verifiable risks associated with the sitting of existing normally occupied buildings around the Cooper Compressors building in the event of blast explosion.

Technical Data:

Two existing buildings, the Pump Station Central Control Room (CCR) and Power Plant Control Room (PPCR) Buildings, located in MPN QIT Process Area, were investigated and the blast resistance capacity was determined. There is a close proximity of the locations of these buildings to a potential gas vapor release source, i.e. the Cooper Compressors building which had been predicted to have an impact on these buildings in the event of an explosion. There exists other normally occupied buildings that are within the fringes of the 1.0psi isobar limit, such as the Laboratory Building, which was also investigated.

ILF Services:

  • Performed all necessary hand calculation and computer analyses in a step-wise process to complete the blast explosion assessment of existing normally occupied buildings around the Cooper Compressors Building
  • Performed archive search of as-built information of these buildings
  • Site visits to verify relevant as-built engineering drawings
  • Developed equivalent computer model of the CCR, PPCR & Lab buildings and performed time-domain dynamic analysis of these buildings
  • Determined maximum deformation of all primary structural elements for each building
  • Proposed appropriate mitigations to reduce blast load effect on the buildings
  • Proposed appropriate building modifications and construction methods to implement recommended mitigation steps thereby improving blast resistance of structural elements of these buildings