can you make me a qc checklist for plumbing?

Use the following quality control and safety checklist for plumbing installation and inspection. It combines workmanship verification, code-oriented compliance checks, testing, and safety controls. Before work starts, complete a documented hazard assessment, apply engineering or administrative controls before relying on PPE, select task-appropriate PPE, train workers, document the training, inspect PPE regularly, and replace damaged equipment. For plumbing work, typical PPE needs include gloves for cuts, chemicals, and leak exposure; safety shoes or boots with slip resistance, toe protection, and puncture resistance; and eye/face protection where cutting, grinding, dust, debris, or chemical splash hazards exist. [12] [5] [1] [11]

• Verify approved drawings, specifications, fixture schedules, pipe sizing, and applicable plumbing code edition are available at the point of work.
• Confirm permits, inspections, and authority-having-jurisdiction requirements are identified before installation begins.
• Check that materials, valves, fittings, supports, and fixtures match approved submittals and are suitable for the intended service, pressure, temperature, and corrosion environment.
• Inspect incoming materials for damage, contamination, deformation, missing markings, incompatible joining components, and expired sealants/chemicals.
• Confirm workers are using current manufacturer instructions for pipe joining, solvent cementing, soldering, brazing, pressing, fusion, and fixture installation.
• Ensure piping routes avoid physical damage, allow access for maintenance, and do not create trip, strike, or pinch hazards.
• Verify piping is adequately supported, aligned, and protected from settlement, vibration, expansion, contraction, and impact damage.
• Where corrosive conditions exist, confirm piping and supports are protected against corrosion.
• Verify sufficient valves are installed for isolation, maintenance, emergency shutdown, draining, and proper system operation.
• Confirm backflow prevention devices, air gaps, traps, vents, cleanouts, and drainage slopes are installed where required by the applicable code and design.
• Check penetrations, sleeves, firestopping, waterproofing, and sealing at walls, floors, roofs, and wet areas.
• Inspect workmanship: joints fully made, fittings properly seated, threads not overcut, supports secure, fixtures level/plumb, and no visible strain on equipment connections.
• Verify identification and labeling of systems, shutoff valves, test sections, and any non-potable or specialty water lines.
• Before concealment or service, inspect all joints and connections visually and complete required pressure or leak testing.
• Document punch-list items, corrective actions, retests, final inspection results, and turnover records.

[2] [2] [2] For hazard identification during plumbing installation and inspection, assess at minimum: slips on wet surfaces, puncture and cut hazards from tools and sharp pipe edges, falling objects, manual handling injuries, electrical exposure near energized equipment, trench or confined-space hazards where applicable, hot-work burns during soldering/brazing, chemical exposure from primers, cements, cleaners, descalers, and disinfectants, dust and debris from cutting or demolition, noise from power tools, and biological exposure when working on sanitary systems. Controls should prioritize elimination, isolation, ventilation, lockout or de-energization, housekeeping, safe access, and then PPE. [3] [1] [8] [14]

• Confirm pipe, tube, valves, fittings, supports, hangers, sleeves, insulation, fixtures, pumps, heaters, drains, traps, vents, and accessories are the specified type and rating.
• Check manufacturer markings, pressure class, material compatibility, potable-water suitability where applicable, and traceability records if required by the project.
• Reject cracked fixtures, dented pipe, damaged threads, distorted fittings, corroded components, contaminated interiors, and deteriorated gaskets or seals.
• Verify solvent cements, primers, lubricants, fluxes, sealants, and other chemicals are approved for the pipe material and service and are within shelf life.
• Ensure protective caps remain in place until installation to prevent debris entry and future blockage or contamination.
• Confirm storage conditions prevent UV damage, moisture intrusion, corrosion, freezing damage, and mechanical damage.

[15] Leak prevention and workmanship verification should focus on correct preparation, alignment, joining, support, and protection of the system. Verify cut ends are clean and square, burrs removed, mating surfaces prepared, joining methods compatible with the material, torque and insertion depth controlled where applicable, and joints allowed proper cure or cooling time before testing. Confirm no cross-threading, over-tightening, unsupported valve bodies, excessive pipe stress, or misalignment at fixtures and equipment. Keep systems clean during assembly to prevent debris-related valve failure, blockage, and leakage. Inspect all visible joints, seams, closures, fittings, and connection points before concealment and after any repair. [4] [7] [2]

For pressure testing and pre-commissioning inspection, test piping before it is covered, enclosed, or placed in service. A robust checklist is: isolate the test section; verify test medium and test pressure are appropriate for the system and code; confirm gauges are suitable and calibrated; install pressure-relief protection where compressed air or gas is used; fill and vent the system fully if hydrostatic testing is used; stabilize pressure; maintain the test for the required duration; visually inspect all joints, valves, fittings, and connections; record starting pressure, ending pressure, duration, observations, and any leak locations; repair defects; and retest until acceptable. Where pneumatic testing is used, apply additional precautions because stored energy makes failures more hazardous. [2] [9] [10]

• Flush, clean, and disinfect potable water systems where required before use.
• Verify correct operation of pumps, heaters, mixing valves, pressure-reducing valves, relief valves, controls, alarms, and backflow prevention assemblies.
• Check fixture flow, drainage performance, trap seals, vent function, hot-water delivery, recirculation balance, and absence of water hammer or abnormal vibration.
• Confirm no leaks under static and operating conditions, including at fixtures, equipment connections, valve stems, unions, and flexible connectors.
• Verify labeling, access panels, valve charts, as-built drawings, O&M manuals, warranties, and training for the owner or operator.
• Complete final inspection sign-off only after punch-list closure and acceptance of all test records.

[6] [2]

• Hazard assessment record for plumbing tasks and work areas.
• PPE selection record and certification of hazard assessment.
• PPE training records, including use, care, limitations, and enforcement.
• Inspection records showing PPE is maintained and damaged items replaced.
• Permits, approved drawings, submittals, and applicable code references.
• Material certificates, SDSs for chemicals, and manufacturer installation instructions.
• Pressure test procedures, calibrated gauge information, test reports, leak/repair logs, and retest records.
• Inspection checklists, nonconformance reports, punch lists, and corrective action closeout.
• Commissioning/start-up records, flushing/disinfection records where applicable, and owner handover documents.

[12] [13] [5] [10] From a code-compliance standpoint, the final inspection should confirm that the installation complies with the adopted plumbing code, local amendments, manufacturer instructions, permit conditions, and any applicable OSHA safety requirements for the work methods used. At minimum, verify approved materials, proper support and protection, corrosion protection where needed, adequate valving and backflow protection, required testing before concealment, safe access for operation and maintenance, and complete documentation. If the plumbing system includes fuel gas, medical gas, fire protection interfaces, or hazardous liquids, apply the additional code and specialty-standard requirements for those systems as well. [2] [15]