UPDA Mechanical case studies
UPDA Mechanical · Put your knowledge to work in context.
The UPDA mechanical engineering exam is the licensing assessment that mechanical engineers working in Qatar are expected to clear before practising independently or holding a responsible engineering position. It is intended for graduates in mechanical engineering - newly qualified, trained abroad, or returning after a career break - who must show that their technical knowledge and professional judgement meet the standard expected in Qatar's construction, energy and facilities sector. The UPDA Mechanical case studies are 5 cases and about 4,875 words.
1Relief Valve Rating, an Expired Gauge, and a Certificate Due Today
You are the mechanical engineer of record for a 1.2 MW packaged glycol chiller supplied to a hospital. The evaporator shell has an MAWP of 10 bar g at 120 °C.
944 words, about 5 min2Cavitation on the 80 °C Cooling Loop
A cooling loop draws 80 °C water from an open atmospheric tank whose surface is 2.5 m below the centrifugal pump centreline. At the duty flow of 45 L/s the 150 mm ID suction line, its two 90° bends and a basket strainer account for 1.8 m of head loss, and the pump's NPSHr is 3.0 m.
919 words, about 5 min3Cantilever Hoist Bracket: Substituted Section and a Weld-Toe Crack
A cantilever bracket carries a 12 kN static hoist load at its tip, 2.0 m from the welded support. The specified section is a 150 × 100 × 8 RHS in S275 steel with I = 11.3 × 10⁶ mm⁴, S = 150 × 10³ mm³ and E = 200 GPa.
987 words, about 5 min4The AHU That Will Not Dehumidify
A 30,000 L/s air handling unit serves an open-plan office designed for 24 °C and 50% RH with a 500 kW coil load. Chilled water design is 6.5 °C supply, 13.5 °C return, 17 L/s.
1,040 words, about 5 min5Level Loop Hunting After a Transmitter Change
A 4–20 mA level transmitter on a 2.5 m storage tank was replaced during a shutdown. The new transmitter is ranged 0–2.5 m, but the PLC analogue input block was left at the previous 0–2.0 m range.
985 words, about 5 min