NASSCO PACP Pipeline Inspections: Understanding Your Sewer Condition Report

What Are NASSCO PACP Pipeline Inspections?

PACP stands for Pipeline Assessment Certification Program. Developed by NASSCO, it provides a standardized approach to recording and coding observed pipeline conditions.

NASSCO PACP pipeline inspections commonly use CCTV equipment to document accessible internal pipe surfaces. The observations are coded using the applicable programme requirements, creating a structured record that can be reviewed alongside the inspection media.

PACP certification applies to qualified personnel. A crawler or camera is an inspection tool, not a PACP-certified inspector. When requesting this work, confirm the personnel qualifications, coding requirements and deliverables included in the proposal.

Visit NASSCO’s official assessment programme information for background, or explore Ven-Tech’s pipe inspection services.

1. Confirm the Pipe Identification and Inspection Details

Before reviewing defects, confirm that the report describes the correct asset. Reliable NASSCO PACP pipeline inspections depend on accurate identification so findings can be matched to the owner’s drawings, records and maintenance system.

• Pipe or asset identification number.
• Upstream and downstream access-point references.
• Inspection date and direction of travel.
• Reported pipe dimensions, shape and material.
• Inspected distance and distance reference.
• Relevant preparation and operating conditions.

Check discrepancies before using the report to plan repairs. If the field information differs from the asset register, the difference should be identified rather than silently carried forward into future records.

2. Review Coverage and Inspection Limitations

NASSCO PACP pipeline inspections document what the equipment can observe. Water, deposits, roots, obstructions and restricted access may prevent complete examination of a pipe section.

Confirm whether the inspection reached the intended endpoint. If it stopped early, the report should identify the stopping distance and reason. An uninspected section should not be treated as being in acceptable condition simply because no defects were recorded there.

The same applies to submerged or obscured surfaces. CCTV cannot establish the condition of a pipe wall hidden behind deposits or opaque water. Cleaning, flow management, a return inspection or a complementary method may be appropriate.

3. Understand the Observations and Condition Codes

The purpose of NASSCO PACP pipeline inspections is to make recorded conditions more consistent between inspections and reviewers. Codes should be read with their associated descriptions, locations and supporting footage.

Depending on the asset and visible conditions, observations may relate to cracking, joint condition, deposits, roots, infiltration or other features. Different findings can have different implications for maintenance or further investigation.

Do not interpret a code in isolation. Review where the observation occurs, how much of the pipe is affected and whether the evidence supports the recorded description. Ask for clarification where the written record and footage appear inconsistent.

4. Interpret Condition Grades Without Confusing Them with Risk

Condition grades used in NASSCO PACP pipeline inspections range from 1 to 5, with higher grades representing more significant observed defects. Summary ratings also depend on the grading and occurrence of recorded conditions.

A condition grade is not a complete assessment of failure risk or remaining service life. Asset owners must also consider factors outside the internal inspection, including location, consequences of failure and other available asset information.

For example, similar observed conditions may lead to different priorities for a low-consequence branch pipe and a critical sewer beneath essential infrastructure. The inspection supports that decision but does not make it automatically.

See NASSCO’s explanation of the PACP condition grading system for further context.

5. Match Report Findings to the Inspection Evidence

Useful NASSCO PACP pipeline inspections allow reviewers to connect observations to the relevant video, still images and distance references. This makes it easier to investigate a finding and discuss it with maintenance or engineering personnel.

• Confirm that the video corresponds to the correct pipe segment.
• Check that the direction and distance reference are clear.
• Review representative images for significant observations.
• Identify whether visibility or deposits affected interpretation.
• Confirm how repeated or extended observations are documented.

Footage should be usable for the agreed purpose. Fast camera travel, inadequate lighting or missing views can reduce the value of the record, even when a written report has been produced.

6. Turn Findings into Practical Next Steps

NASSCO PACP pipeline inspections can support cleaning programmes, targeted investigation, rehabilitation planning and future monitoring. The appropriate action depends on the observed condition and the wider asset context.

A report may identify deposits that warrant maintenance, an obstruction needing further assessment or visible damage requiring engineering review. These are different tasks and should not be combined into an unsupported recommendation to replace the pipe.

Asset-management teams can use the inspection record alongside maintenance history, service information and other investigations. NASSCO’s PACP for Asset Management resources explain how condition information supports broader planning.

Ven-Tech’s pipeline and robotic services can support follow-up inspection and project-specific field work where suitable.

7. Agree on Report and Data Deliverables Before Mobilization

Specify the deliverables for NASSCO PACP pipeline inspections before the work begins. A PDF report, inspection video and structured database are different outputs, and the quotation should identify what is included.

• Applicable PACP version and client coding requirements.
• Asset naming and segment identification conventions.
• Inspection video and still-image formats.
• Written report and condition summaries.
• Requested database or data-exchange format.
• Client review and quality-control requirements.

If information must be imported into a particular asset-management or GIS system, provide the required format early. Confirm compatibility rather than assuming that every software export will meet the owner’s requirements.

Planning Your Sewer Inspection Project

To quote NASSCO PACP pipeline inspections, provide the location, pipe schedule, access-point details, dimensions, materials and estimated lengths. Include known flow conditions, previous reports and any cleaning arrangements.

Identify traffic restrictions, access permissions and the required work window. Where flow control, bypass pumping or cleaning may be needed, confirm who will design, arrange and authorize that work.

Ven-Tech supports municipalities, utilities, engineering firms and contractors across Canada. Equipment selection, availability and mobilization are confirmed against the project scope and site conditions.

Frequently Asked Questions

Are all CCTV pipe inspections PACP inspections?

No. CCTV describes the inspection method. PACP describes the assessment and coding framework. Confirm that the requested work includes appropriately certified personnel, the specified coding requirements and the required outputs.

Does the pipe need cleaning beforehand?

It depends on the inspection objective and existing conditions. Deposits and obstructions can prevent useful examination. Confirm whether pre-cleaning is required, who will perform it and whether a return visit is included.

Does a condition grade determine when a pipe will fail?

No. It describes the significance of recorded internal conditions within the assessment framework. Failure risk and service-life decisions require additional information and appropriate technical judgment.

Are manholes and laterals included?

Only if included in the agreed scope. NASSCO has separate assessment programmes for laterals and manholes. Confirm the relevant qualifications, inspection requirements and reporting before booking those services.