Lube Oil System Sizing Calculations - API614 Chapter 2

Simply enter your own data in the yellow fields for the necessary calculations to be madeProject: Revision: Date:

NominalNormal flowrate: 61.5 LPM Engineer:

Flow VelocityNominal Bore of Pressure Lines: 1" sch80 2.21 m/s < 3 m/s therefore OKNominal Bore of Suction Lines: 1 1/2" sch40 0.78 m/s < 1.1 m/s therefore OKNominal Bore of Return Lines: 1 1/2" sch40 0.78 m/s < 1.25 m/s therefore OK

Length of Tank: 4000 mm (L)Width of Tank: 900 mm (W)Steel Thickness of Tank: 8 mm (T)

Tank deflection calculationsReference: Roark's 6th Edition, Chapter 10, Table 26, Case No. 8a & 8d

Is there a full width baffle along the mid-length of the tank? Y Y or N

(8a) Max deflection of tank bottom under 1.3g loading 0.9 mm Max Flow(8d) Max deflection of long side of tank under 1.3g loading 0.1 mm

Distance from bottom of tank side to Tank Floor (nominal): 67 mm (h1) Pressure LineDistance from bottom of tank side to Suction loss level: 216 mm (h2) Suction LineDistance from bottom of tank side to Min operating level: 355 mm (h3) Return LineDistance from bottom of tank side to Max operating level: 446 mm (h4)Distance from bottom of tank side to Rundown level: 500 mm (h5)Distance from bottom of tank side to underside of tank lid: 642 mm (h6)

Suction loss volume of Reservoir: 525 Litres (L-2T)(W-2T)(h2-h1) (v1)Min operating volume of Reservoir: 1014 Litres (L-2T)(W-2T)(h3-h1) (v2)Max operating volume of Reservoir: 1335 Litres (L-2T)(W-2T)(h4-h1) (v3)Rundown volume of Reservoir: 1525 Litres (L-2T)(W-2T)(h5-h1) (v4)Total volume of Reservoir: 2025 Litres (L-2T)(W-2T)(h6-h1) (v5)

API 614, 5th Edition, Chapter 2, 4.3.6 Capacity and configurations

4.3.6.3 The min working capacity to be 5 mins of normal flow

Min required working capacity: 307.5 LitresActual working capacity: 490 Litres (v2-v1) Passed

4.3.6.4 The min retention capacity to be 8 mins of normal flow

Min required retention capacity: 492 LitresActual retention capacity: 1014 Litres (v2) Passed

4.3.6.8 The min free surface of oil in the reservoir to be 60 cm2 for each LPM of normal flow

Min free surface of oil: 3690 cm2Actual free surface of oil: 35219 cm2 (L-2T)(W-2T) Passed