COVER25-02-2004KOCA4PWB.XLS.......CONTRACTORAREA.......FACILITY UPGRADE & RELOCATION OF U/G PROCESS PIPING.......FOR GC 3, 4, 6, 7, 8, 21, 23, BS 140 & BS 150 (GROUP A)AFor ReviewDPGKVKMA26/01/06BUNDWALLS CONTAINMENT CAPACITYREV.AMENDMENTSPRPDCKDAPPDAPPDDATEPREPARED.CHECKED.APPROVED.CALCULATIONSKOC APPROVALSAPPROVED.DATE.SCALEN ACONTRACTOR DOC. No.REV.K.O.C. DOC. No.REV.DEPARTMENTSIGNATUREDESIGNATIONDATEPROJECT -FACILITY UPGRADE & RELOCATION OF U/G PROCESS PIPINGJI-180-000-ECV-CAL-050AXXX-XX-XXXXFOR GC 3, 4, 6, 7, 8, 21, 23, BS 140 & BS 150 (GROUP A)PROJECT No.-EF/1500CONTRACT No.-26155

BUNDWALLS CONTAINMENT CAPACITYCALCULATIONS( FOR GC -21 )

IndexClient : Kuwait Oil CompanyProject : Facility Upgrade and Relocation of Under Ground ProcessJob No :JI-180Doc No :JI-180-000-ECV-CAL-050Subject :BUND WALLS DESIGN AND CONTAINMENT CAPACITYRev No :0CALCULATIONS FOR GC-21Prep. By :Mr DipakCheckd. By :Mr Girish KurnoolINDEXSR NODESCRIPTIONPAGE NO1Introduction1.1 Introduction1.2 Design Basis1.3 Reference Document2Containment Capacity Calculations For Main Crude Oil Tank.

IntroductionClient : Kuwait Oil CompanyProject : Facility Upgrade and Relocation of Under Ground ProcessJob No :JI-180Doc No :JI-180-000-ECV-CAL-050Subject :BUND WALLS DESIGN AND CONTAINMENT CAPACITYRev No :0CALCULATIONS FOR GC-21Prep. By :Mr Dipak/ Mr ALCheckd. By :Mr Girish Kurnool1.1 Introduction:This document describes the methodology adopted for Design of Tank Bund Wall for KOCFacility Upgrade & Relocation of U/G Process Piping project in Kuwait.1.2 Design Basis:a) Earthen bund wall :New bund wall is located clearing proposed pipeways and existing features. As the existing earthen bund wallheight can not be increased due to presence of many existing features on both sides of bund, top elevationof new bund wall is kept same as existing earthen bund wall for that tank.Proposed bund is sized to contain 115% of tank's nominal capacity. The free board available for the proposedbund is calculated. If the free board available is more than 600mm, the same free board is provided. If thefree board available for the proposed bund is less than 600mm, the free board available for the existing bund(I.e. before modifying the layout ) is calculated with a containment capacity of 115% of tank's nominalcapacity and a minimum free board of lesser of the following is provided.a) 300mm as per "SHELL" standard ( Refer sheet 44A)b) Free board available for the existing bund wall.Bund wall shall have side slopes of one (1) Vertical to one and one half ( 1 1/2) Horizontal. The top width shallbe kept minimum as 900 mm.b) RCC dyke wall design :Here, Dyke wall has been designed as a cantilever retaining wall and following critical cases has beenconsideredCase-1 Soil pressure and wind on one side of wall and empty on tank side.In this case cantilever wall has been analyzed for the active earth pressure from one side only,while checking for the stability, weight of earth from both the side has been considered.Case-2 Liquid pressure due to spilled liquid on tank side and soil pressure on the other side.In this case liquid presure & submerged soil pressure from tank side and dry soilpressure under passive condition from outside has been considered. While checking for thestability, liquid weight from tank side and weight of earth from both the sides have been considered.Soil parameters are used as per JI-180-000-ECV-SPE-001. The RC wall is designed as per BS 8110. Thecrack width for the thermal shrikange and flexure are calculated as per BS 8110. The crack width is limited to0.3mm as per BS-8110.1.3 Reference Documents:1. JI-180-000-ECV-SPE-001- Civil & Structural Design Philosophy2. KOC-G-007- Basic Design Data3. KOC-C-001- Basic Civil Engineering Design Data4. KOC-C-033- KOC Standard for Bund Wall for Storage Tanks5. KOC-L-027- KOC Standard for Layout, Spacing and Dyking of Storage Tanks

TK-1526Client : Kuwait Oil CompanyProject : Facility Upgrade and Relocation of Under Ground ProcessJob No :JI-180Doc No :JI-180-000-ECV-CAL-050Subject :BUND WALLS DESIGN AND CONTAINMENT CAPACITYRev No :0CALCULATIONS FOR GC-21Prep. By :Mr Dipak/ Mr ALCheckd. By :Mr Girish Kurnool2 DESIGN CALCULATION FOR TANK BUND WALLTK - 1526 ( Main Crude Oil Tank )Bund Wall on 2 sides and Retaining Wall on 2 adjacent sides ( East & South Sides ) :Dia of tank=26.213mHeight of tank=12.192mCapacity of Tank=6037m3Capacity of Tank adding 15% extra, Q=6942m3from Doc.# KOC-L-027For calculation of capacity of tank the liquid height in the tank shall be considered as 1m lessthan the height of the tank.Bunded Area Sizing :Length of area enclosed at bottom, lb=56.28m( Conforms to safe distance criteria as per KOC-C-033 )55.85Width of the area enclosed at bottom,wb=49.40m49.40Effective height of Bund/Retaining Wall , d=2.50m2.55Side slope for Bund Wall, s1V :1.5Hfrom Doc.Length of enclosed area at ht. d, ld=lb+sd=60.03m# KOC-C-033Width of the enclosed area at ht d, wd=wb+sd=53.15mCapacity of enclosed area upto Ht. d, Vb=7438m3Height of Tank Fdn. above grade level, hf=0.38mDiameter of Tank Foundation, df=26.8mVolume occupied by Tank Fdn. above grade=214.4m3Adding 10% to take care of volume occupied by miscelleneous Pipe Support Fdn., Pipes and Access stairs etc. Vf=235.8m3Volume occupied by fill for Access Road inside enclosed area, Vr=256.9m3Net Capacity of Bunded Area V = Vb-Vf -Vr=6945.7m3Hence sizing of Bund wall is OKWidth of Bund Wall at Top=0.9mfrom Doc.Side slopes are protected by asphalt prime coat.# KOC-C-033Average top elevation of existing bund wall (north)=E+L 101.00Average top elevation of existing bund wall (south) =E+L 100.71Average top elevation of existing bund wall (west) =E+L 101.53Average top elevation of existing bund wall (east) =E+L 100.49Average ground level inside the bunded area=E+L 97.50Min top elevation of existing earthen bundwall=E+L 101.00Average height of bundwall within the bunded area=EL 101.00 - EL 97.50=3.50mCalculated height of liquid to be=2.50mcontained within the bunded areaThe liquid level to be contained within=EL 97.50 + 2.50the bunded area=E+L 100.00Free Board=0.30mThe top elevation required for R.C.C retaining wall=EL 100.00 + 0.30=E+L 100.30SayE+L 100.30However,keep the top elevation of retaining wall at EL 100.5 so as to match with that of existing earthen bundwall atthe junction.Top elevation of retaining wall=E+L 100.50mThe actual minimum freeboard available=EL 100.50 - EL 100.00=0.500mThe actual free board of 500mm for the bund wall is less than the 600mm required as per KOC-L-027.However, the free board provided is as per standard engineering practice and is in line with Shell guidelines, which ismore than 300mm.The height of R.C.C retaining wall=EL 100.50 - EL 97.50=3.00mTK - 1526 ( Main Crude Oil Tank )Tanklb = 56.2805wb =49.3974.52.2Access RampRetaining WallsPlan0.9 mBund wallSlope 1 :1.53.50 mFGLSection Details of Bund Wall3.00 mFGLSection Details of Retaining WallCALCULATION OF VOLUME OF RAMP.Top elevation of Access Ramp=E+L 101.25Bottom elevation of Access Ramp=E+L 98.40Height of ramp=2.85mSlope=1 V : 7.00 HLength of ramp=19.95mTaking 3% extra for curvature of ramp=20.55mArea of ramp=180.31m2Volume of ramp=256.95m3

&R&LRetaining Wall