Iran Nezam Mechanical Supervision Exam study plan

Map the full Domain 1 topic tree (load-to-terminal: psychrometrics, duct sizing, air distribution, hydronic piping, terminal units, ventilation) and rank each subtopic by exam weight and personal weakness

Solve at least 20 psychrometric problems by hand on the chart: locate state points, compute sensible and latent splits, coil ADP, bypass factor and apparatus dew point

Derive and apply equal-friction and velocity-reduction duct sizing methods to three branch layouts, verifying total pressure drop with a simple friction chart

Explain in writing the difference between constant air volume and variable air volume systems, including how terminal boxes, static pressure reset and minimum ventilation are controlled

Compare chilled-water, direct-expansion, and air-cooled versus water-cooled plant configurations on efficiency, first cost and maintenance, writing a 10-line justification for each

Select and size terminal units (fan coils, VAV boxes, chilled beams) for two sample zones using sensible and latent capacities from manufacturer-style data you construct yourself

Trace the refrigeration cycle for a vapor-compression chiller: compute evaporator and condenser loads, COP, compressor power and approach temperatures

Draft a commissioning checklist for an air-handling unit covering airflow balance, coil performance, filter pressure drop and controls sequence verification

Compute heating and cooling design loads by the transfer-function or CLTD/CLF approach for a simple office zone, showing every input assumption

Separate envelope, internal, infiltration and ventilation loads and quantify the share each contributes to peak cooling load

Apply Mabhas 19 thermal transmittance limits to check a wall and roof assembly, and list which U-values fail

Evaluate three energy-efficiency measures (economizer, heat recovery, LED and occupancy controls) and estimate annual energy savings for each

Size cold and hot water supply pipes for a multi-story building using fixture units, and verify residual pressure at the topmost fixture

Design a drainage stack and vent system for a sample building, checking trap arm lengths, stack capacity and vent sizing against Mabhas 16

Compute domestic hot water demand and size a storage tank and heater for a residential block, including recirculation return sizing

Identify cross-connection risks and specify backflow prevention devices for three building scenarios

Determine required fire-resistance ratings and compartmentation for mechanical shafts, and specify fire and smoke damper locations on a schematic

Design a smoke control strategy (pressurization or exhaust) for a stairwell or corridor, computing required airflow from door-opening and leakage criteria

Size a natural gas piping system for a boiler room using the longest-run method and verify against Mabhas 17 pressure-drop limits

List combustion air, flue, ventilation and gas leak detection requirements for a basement boiler room and check a sample layout against them

Summarize the scope of Mabhas 14, 16, 17 and 22 into a comparison table: what each governs, key mandatory clauses and common inspection triggers

Extract every numerical limit (U-values, ventilation rates, pipe velocities, clearances, pressure drops) from the four Mabhas sections into a single reference sheet

Explain refrigerant classification, safety groups and charge limits, and choose an acceptable refrigerant for a given occupancy

Compare absorption, centrifugal and screw chillers on part-load performance and maintenance, and state when each is preferred

Write the supervision workflow for a mechanical project from shop-drawing review through testing and handover, listing documents the supervisor must sign at each stage

Analyze five ethics scenarios (conflict of interest, pressure to approve non-compliant work, falsified test reports, gifts from contractors, reporting unsafe gas work) and state the correct action with reasoning

Prepare a bill of quantities for a ductwork and piping package using a measurement method, including wastage and unit-rate buildup

Review a sample contract clause set and flag the clauses that shift risk to the supervisor, explaining the practical consequence of each

Complete two full timed mock exams under exam conditions and score each by domain to find residual weak areas

Re-drill the 30 most-missed items from earlier weeks until each is solved correctly twice without notes

Recite the numerical-limits sheet from memory and reconcile any gaps against the source sections

Rehearse the supervision and ethics checklists aloud against three new scenarios to confirm recall under time pressure