MEP Peer Review: Having a Vendor's Design Checked Before It Reaches Site

An MEP peer review is an independent engineer's check of a vendor's design (drawings, load and capacity calculations, equipment schedules and coordination) before orders are placed or the slab is closed. It finds undersized plant, clashes, missing approval scope and details nobody can build, while a correction costs a drawing revision and not a rework on site. It checks a design; it does not replace it.

What a peer review actually covers

A reviewer works discipline by discipline and then across them. The second pass is where most of the value sits, because each vendor designs its own package against assumptions about the others. The table lists what is checked and the kind of finding that tends to come up.

The reviewer also checks the design against the project's own brief and the codes the building falls under. For commercial and office buildings with a connected load of 100 kW or more, or a contract demand of 120 kVA or more, that includes the Bureau of Energy Efficiency's Energy Conservation and Sustainable Building Code 2024. Fire and life safety is read against the National Building Code of India 2016, published by the Bureau of Indian Standards, and the state fire service's own requirements.

What to hand the reviewer

A review is only as good as the file it is given. Ask the vendor, or send yourself, the following before the review starts.

• The design basis or owner's brief: occupancy, operating hours, redundancy expected, climate data used.
• Calculation sheets, not only drawings: electrical load schedule, heat load, water demand, hydraulic calculation.
• Equipment schedules with make and model, or the performance specification if the make is not yet chosen.
• Layout and section drawings for every discipline, in the same revision and coordinated on one base.
• The single-line diagram, riser diagrams and plant room layouts.
• The vendor's scope letter and exclusions, so the reviewer can see what the design deliberately leaves out.

If a vendor will not share calculations, that is itself a finding. A design that cannot show its working cannot be reviewed, and it cannot be defended later when a figure is questioned.

What a peer review is not

It is not a re-design. The reviewer marks up comments and the original designer revises and answers each one. It is not a substitute for the statutory approvals either. The approvals your project needs, such as the Fire NOC and the electrical inspector's sanction, still go through their own authority; a good review simply makes the drawings that go to them cleaner. And it is not a guarantee of how a particular officer will read a drawing, which differs by state and office.

How the cost of a review is set

Review fees are scoped, not fixed to a rate card, so any single figure quoted without seeing your drawings should be treated with caution. What moves the cost:

• Number of disciplines and drawings. Electrical alone is a smaller job than a full MEPF package.
• Depth. A check of the design basis and key calculations is lighter than a line-by-line review with independent recalculation of the critical systems.
• Review rounds. The first round is the main effort; rounds two and three check that comments were closed correctly.
• Quality of the file. Missing calculations and uncoordinated drawings add reviewer hours.
• Turnaround. A review needed in days, to meet a tender or ordering date, costs more than one planned into the programme.

Fee bases typically offered are a lump sum for a defined package or a time-based fee with a cap. Compare the review fee with the package it protects, which you can budget with the MEPF cost calculator, and with what a rework would cost: broken-out slab, re-ordered equipment, a delayed handover.

When a peer review pays, and when it does not

It pays most where the design is complex, the vendor designs and builds, and errors are expensive to reverse: hospitals, pharma and cleanroom areas, data rooms, large industrial sheds and anything with fire-rated or shaft-heavy construction. It also pays when the owner has no in-house MEP engineer to challenge a design-and-build contractor, or when two contractors' packages meet at a boundary that nobody owns.

It pays least on a small, repeat fit-out where the same designer has delivered the same layout several times and the owner's own engineer already reviews it. In that case a short check of the load schedule and the fire layout is usually enough. The honest test is simple: if a wrong capacity or a clash would be found only after material is on site, review before it gets there.

Timing matters as much as scope. The right moment is after the design is mature enough to review and before the tender is issued or the purchase orders go out. Reviewing after procurement turns every comment into a variation claim.

How Secured Engineers helps

We do design in-house, so a review is carried out by engineers who produce the same drawings every week. Fire NOC, CEIG and DISCOM net-metering filings are also handled in-house, which means we read a drawing the way the approving authority will. Mechanical, electrical, plumbing, fire and solar work can sit under one contract, so a review that finds a boundary gap can also close it. We work from offices in Noida (Delhi NCR) and Ludhiana, with 535+ projects across 18+ states and 89.77% repeat clients.

If a vendor's design is on your desk, send it for a technical review through our MEP design and approvals service, message us on WhatsApp, call +91 70099 85817, or ask for a free proposal covering scope, turnaround and the form the comments will take.