Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) study plan

Classify GI, CI, PVC, CPVC, and copper pipes by their markings, pressure ratings, and typical domestic applications, and record each in a comparison table.

Identify at least 15 fittings (elbows, tees, reducers, unions, couplings, nipples, caps, bends) by name, size, and the joint type each accepts.

Demonstrate correct measurement and marking of a pipe length with a measuring tape and try square, then cut it with a hacksaw keeping the cut square within 1 mm.

Select the right tool for cutting PVC, GI, and CI pipe, and state in writing why each tool suits that material.

Explain the difference between nominal bore and outside diameter and convert three given sizes using a pipe size chart.

Cut and thread a 1/2-inch GI pipe by hand, producing a taper thread that seats fully in a socket without cross-threading.

Assemble a four-piece GI joint set (two pipes, one elbow, one tee) using hemp or PTFE tape and test it for hand-tight fit and alignment.

Set up and use a pipe vice, pipe wrench, and die stock safely, naming the pinch and crush hazards of each.

Bend a 15 mm copper or PVC pipe to a 90-degree offset using a spring or bending machine without flattening the bore, checking against a template.

List the inspection points for a finished threaded joint and explain the consequences of over-tightening and under-tightening.

Name and state the correct use of at least 20 hand and power tools used in plumbing, including wrenches, cutters, threading machines, augers, and pressure test pumps.

Perform pre-use inspection and basic maintenance (oiling, blade change, die cleaning) on three tools and log the condition found.

Demonstrate correct manual handling of a pipe bundle and a water heater, identifying the safe lifting posture and team-lift threshold.

Identify the hazard symbols and safe storage requirements for solvent cement, PVC primer, lead solder, and LPG cylinders used on site.

Explain personal protective equipment requirements for cutting, threading, soldering, and working in an excavation, and state which PPE is mandatory in each case.

Draw a labelled domestic water supply layout for a two-storey house showing the overhead tank, distribution pipe sizes, and branch lines to kitchen, toilet, and bathroom.

Distinguish direct and indirect (tank-fed) supply systems and list two advantages and two limitations of each for a Punjab household.

Select pipe sizes for main, branch, and fixture connections using a simple fixture-unit or rule-of-thumb method and justify each choice.

Explain the purpose and placement of valves, air release, non-return valves, and water meters in a domestic layout.

Describe the sequence of jointing CPVC and GI pipes in a supply line, including the curing time for solvent cement and the tightening sequence for threaded fittings.