October 28, 2026
Posted by: editor
Category: RECD & Emission Control Devices

Most RWA committees are volunteers with day jobs, and someone who once worked in telecom is suddenly “the electrical person”. Then the builder announces that its facility management team will leave at the end of the quarter, and the society inherits three diesel generators, the emission control devices fitted to them, and every obligation that comes with both. A careful RECD handover to RWA is what separates a calm first winter from a sealed DG set in the middle of a GRAP alert.

The timing usually makes it worse. Handovers in Delhi NCR often land between August and October, which means the first season the RWA runs alone is the one where GRAP restrictions on DG sets start to bite. If a consent is still in the builder’s name, an alarm SMS still goes to a supervisor who has moved to another project, or the RECD has not been cleaned since commissioning, the RWA finds out at the worst possible moment.

This guide, written for committee members rather than engineers, splits the takeover into three meetings with the developer: documents, a joint inspection, and sign-off. It then covers the transfers most often forgotten, an illustrative budget and the red flags that justify refusing to sign.

If your society is still deciding which RECD to buy for an un-retrofitted DG set, our RECD purchase planning guide for RWAs is the better starting point. This post assumes the device is already installed and running.

RECD Handover to RWA: What Is the Society Really Taking Over?

When the builder hands over “the DG sets”, it is handing over far more than steel and copper. It helps to split the takeover into four buckets before any meeting is scheduled, because each bucket has a different owner on the committee.

Bucket	What it includes	Who on the committee should own it
Equipment	DG sets, RECDs, exhaust pipes and stacks, controllers or panels, sensors, sampling ports, spares	Maintenance or technical sub-committee, with the incoming FM
Obligations	SPCB consent conditions, RECD certificates, test reports, GRAP compliance, record keeping	Secretary or compliance lead
Money	AMC contracts, warranty cover, unpaid vendor invoices, maintenance deposit or sinking fund linked to these assets	Treasurer
People	DG operators, AMC technicians, supplier contacts, alarm recipients	Incoming FM or estate manager

Treat the RECD as a separate asset, not “part of the DG”: it usually has its own supplier, warranty, certificate and sometimes service contract.

Before You Start: Set Up the Three Meetings

A builder-to-RWA DG set handover goes badly when it is squeezed into one afternoon with a carton of files and a bunch of keys. Ask instead for three dated meetings, a week or two apart:

Meeting 1, Document handover – held in an office, with files laid out and checked line by line.
Meeting 2, Joint site inspection – held in the DG room with the equipment running, including a loaded test.
Meeting 3, Sign-off and snag list – held after the RWA has had time to review findings, ending in a signed handover note or a signed refusal with reasons.

Ask the developer to bring its FM head, electrical in-charge and ideally the RECD supplier’s service partner. On the RWA side, bring the incoming FM, one or two committee members and, if affordable, an independent DG consultant for Meeting 2. Keep numbered minutes from day one; snags “agreed verbally” tend to disappear by Meeting 3.

Meeting 1: The Document Handover

The first meeting is about paper: a complete set of records for every DG set and RECD, each of which actually matches the equipment on site.

RWA generator handover documents checklist

Ask for one physical file and one digital copy per DG set. Use this table as your tick-list in the meeting.

Document	What to check	Common gap
SPCB consent (CTE/CTO or as applicable)	Holder name, address, DG ratings listed, validity date, conditions attached	Consent still in the developer’s or contractor’s name; expired or under renewal
RECD certificates	Certificate refers to the RECD model fitted; serial numbers match the nameplates you will see in Meeting 2	Generic brochure copy instead of the certificate; serial numbers missing
Type approval or test reports	Issuing agency, DG rating range covered, date	Report covers a different rating band from the installed DG
Commissioning or site acceptance report	Date, load at which commissioning was done, readings recorded, signatures	No load figure, or “OK” written without numbers
Baseline readings	Back-pressure, exhaust temperature, opacity or PM results at stated load after installation	Never taken, so later readings have nothing to compare against
Warranty cards	Start date, period, what is covered, and whether the warranty is transferable to a new owner	Registered to the builder with no transfer clause
AMC contract(s)	Scope, visit frequency, expiry, whether the contract can be novated to the RWA	Contract expires on handover day or is tied to the builder’s group account
O&M manuals	RECD and DG manuals in English or Hindi, with cleaning intervals and alarm meanings	Only the DG OEM manual is provided
Drawings	General arrangement, exhaust route, stack height, sampling port location, electrical connections	Drawings show the design, not the as-built layout
Logbooks	Running hours, loads, alarms, cleaning dates since installation	Logbook stops months before handover
Spares inventory	List of spares with quantities, against what is physically in the store	List says gaskets and filters; store has an empty shelf
Open complaints and service tickets	Any unresolved fault reported to the supplier or AMC company	Tickets raised but never closed; RWA not told

Matching certificates to serial numbers

This is the most useful check a non-engineer can do. Note the model and serial from each certificate, then compare them with the nameplates in Meeting 2. Any mismatch is a snag. Our guide on how to read an RECD test certificate explains which fields matter and which are boilerplate.

For background, CPCB has issued a system and procedure for emission compliance testing of retrofit emission control devices for in-use DG engines up to 800 kW gross mechanical power. RECDs under that framework must be type approved with at least 70% PM capture efficiency, with testing by recognised agencies such as ARAI and ICAT. You can find CPCB notices on the Central Pollution Control Board website. Your job at handover is not to re-test the device, but to confirm that the paperwork in the file genuinely belongs to the equipment in the basement.

Reading the service history

Ask for every service report since installation. Long gaps between visits, back-pressure climbing without a cleaning entry, or reports with no load noted are all worth raising. If you want a structured way to do this, the sibling guide on auditing an RECD service report for missing information gives a field-by-field method that a committee member can follow.

End the meeting with a numbered list of missing documents, each with a promised date in the minutes. “We’ll send it on WhatsApp” is not a date.

Meeting 2: The Joint Site Inspection

Schedule the second meeting when DG sets can be run on load, usually a weekday morning with notice to residents. Everyone should be briefed by the electrical in-charge first: exhaust surfaces and the RECD body get extremely hot, nobody opens covers or loosens fittings while a set runs, and panel work follows proper isolation and lockout/tagout. The US OSHA page on control of hazardous energy is a useful plain-language reference for the principle, even though Indian sites follow their own procedures.

The walk route

Walk the system in the order the exhaust flows, so nothing is skipped and photos follow a logical sequence.

Stop	What to look at	Photos to take
1. DG room general	Ventilation louvres clear, no oil pools, fire extinguishers tagged, access paths unobstructed	Wide shot of room; each DG nameplate
2. RECD unit	Nameplate legible, serial matches certificate, body free of cracks, dents or soot streaks at joints, mounting secure	Nameplate close-up; each flange joint; supports
3. Exhaust run	Bellows or flexible joints intact, insulation or heat shields in place, no black staining at joints, no exhaust pipe touching cables or ceiling	Every joint and support; any staining
4. Stack	Height and termination as per drawing, rain cap or protection, no visible damage	Stack from ground; termination if safely visible
5. Controller, panel or BMS link	If your RECD has a controller or display, check it powers on, shows no active alarms, and that alarm history is accessible	Screen with readings; alarm history page
6. Sampling port	Port exists at the location shown in drawings, cap present, safe access possible	Port close-up; access route
7. Spares store	Physical count against the spares list from Meeting 1	Shelf photo with items labelled

Not every RECD has a controller, sensors or a display; designs vary. Ask the supplier to show exactly what monitoring exists on your units.

Compare what you see with the general arrangement drawings provided in Meeting 1. If pipework has been rerouted or a stack extended since installation and the drawings were never updated, that is a records gap the developer should close. The sibling post on updating RECD drawings and records after exhaust modifications explains what a corrected record set should contain.

Demand a loaded test run

A DG set idling at no load tells you little about the RECD. Ask for each set to run at a stated, pre-agreed load, using common-area load or a load bank.

During the run, record at minimum:

Date, time and DG set identity.
Load in kW (or percentage of rating) as shown on the DG panel.
Running time at that load before readings were taken.
Back-pressure and exhaust temperature, if the RECD or exhaust has gauges or sensors.
Any visible smoke at the stack, noted plainly (none, light grey, dark).
Any alarms raised during the run.

Compare these with the commissioning baseline. A large rise in back-pressure at similar load usually means cleaning is due or something has changed upstream. You need not diagnose it; photograph it and ask the supplier to explain in writing before sign-off. Because back-pressure rises with exhaust flow, every number in the minutes needs its load written beside it.

Ask for an operator demonstration

Whoever will run the DG sets after handover should demonstrate the routine in front of the committee:

The daily pre-start checks they perform on the RECD and exhaust.
How they read and record back-pressure or other indications, if available.
What each alarm means and what they do when it appears.
When and to whom they escalate.
Where the logbook is and how they fill it.

If the demonstration is hesitant, that is a training snag, not a personal failing. The batch-51 guide on RECD operator training skills to confirm before handover gives a ready list of competencies to check. Pair it with a proper RECD shift handover log so the knowledge does not walk out of the gate with one operator.

Meeting 3: Sign-Off and the Snag List

This is where the RECD handover to RWA becomes binding. The third meeting turns findings into a list with owners and dates. Circulate the draft snag list three working days ahead so the developer arrives prepared.

Classifying snags

A simple three-level scale keeps discussions short.

Class	Meaning	Examples	Handover effect
Critical	Creates a compliance or safety risk now	Consent not valid or not transferable; certificate does not match installed RECD; exhaust leak into DG room; RECD bypassed or removed	Do not sign until closed
Major	Will cause failure or non-compliance within months if ignored	No cleaning since commissioning with high back-pressure; AMC expiring with no renewal; drawings do not reflect as-built route	Sign only with written closure date and holdback
Minor	Housekeeping or documentation tidy-up	Faded labels; missing photograph in a report; spares list typos	Can be signed with a closure date

Any sign that an RECD has been bypassed, partly removed or disconnected to keep a DG running should be treated as critical. Running a DG set that way is a compliance risk the society would inherit the moment it signs.

Who fixes what, by when

For each snag, write four things: a short description, the class, the party responsible (developer, RECD supplier, DG OEM dealer, AMC contractor) and a closure date. The approach in our article on closing an RECD punch list before handover transfers well to a society takeover, even though it was written with new installations in mind.

Closure means evidence: a revised certificate, a photo of the repaired joint, post-cleaning readings at a stated load, or an SPCB acknowledgement.

Holdbacks and the maintenance deposit

Many societies in Delhi NCR collected an interest-free maintenance security (often called IFMS) or a similar deposit at possession, and the developer holds it until handover. Whether the RWA can withhold part of that amount, or set off the cost of unresolved snags against it, depends on the buyer agreements, any settlement the RWA negotiates, and the apartment ownership law and rules in your state. Do not assume. Check your agreement and the relevant state apartment act, which you can search on the India Code legislation portal, and take legal advice before announcing a holdback.

What the sign-off document should say

Keep the RECD handover to RWA note short and specific. It should list the assets (DG sets and RECDs with serial numbers), the documents received, the snags open at signing with class and date, the readings recorded during the loaded test, and the names and signatures of both parties. Attach the inspection photographs as an annexure. Signing “received in good condition” without that detail gives away the RWA’s ability to raise the issues later.

Transfers That Are Often Missed

Even careful societies forget the administrative transfers, which quietly undermine compliance months later.

Consent holder name with the SPCB

If the consent for the DG sets was obtained in the developer’s name, ask how and when it will be transferred or how the RWA should apply in its own name. Procedures differ by state, so confirm with your SPCB. Our explainer on getting a pollution NOC for a DG set outlines the general process and the documents usually needed. Do not let the consent lapse in the gap between the developer’s exit and the RWA’s application.

RECD warranty transfer to society

Warranty cards are often registered to the builder or its contractor. Ask the RECD supplier, in writing, whether the warranty transfers automatically with the asset, whether it needs re-registration in the RWA’s name, and whether any condition (such as servicing only by authorised technicians) has already been breached. Read the terms against our guide to RECD warranty terms on parts, labour and exclusions so you know what is actually covered.

AMC novation

An AMC signed by the developer does not automatically bind the contractor to serve the RWA. Ask for a novation letter or a fresh contract with the same scope. If you are renegotiating, our article on negotiating an AMC contract for your generator covers the clauses that matter, and you should make sure the RECD is named explicitly in the scope rather than assumed under “DG maintenance”.

Supplier contacts and alarm recipients

Collect direct service contacts for the RECD supplier and DG dealer, and confirm the supplier now lists the RWA as the site contact. If any controller or BMS sends SMS or email alerts, check whose numbers are listed; they often still point to the builder’s supervisor. Change them in your presence and test if possible.

Passwords and access

Ask for the admin passwords of the BMS, any RECD controller interface, and any cloud monitoring portal, and change them after handover. Record who holds them in the RWA. Also collect physical keys: DG room, panel, spares store and roof access to the stack.

Budget Awareness: What Will RECD Upkeep Cost the Society?

Committees often discover RECD running costs only when the first cleaning invoice arrives. The figures below are illustrative only; actual rates depend on your supplier, RECD design, running hours, fuel quality and contract terms. Use your own quotes to replace them.

Illustrative example: 2 × 500 kVA + 1 × 250 kVA

Assume a society of 600 flats with two 500 kVA DG sets and one 250 kVA DG set, each fitted with an RECD, and the following assumed costs:

Cleaning or service visits: two per year for each RECD, at ₹18,000 per visit for a 500 kVA unit and ₹12,000 per visit for the 250 kVA unit.
Consumables (gaskets, fasteners, minor parts): ₹8,000 per year for each 500 kVA RECD and ₹5,000 for the 250 kVA RECD.
RECD-specific AMC or inspection fee covering all three units: ₹60,000 per year.
Contingency: 10% of the above.

Cost line	Arithmetic	Annual amount
Cleaning visits, 500 kVA units	2 units × 2 visits × ₹18,000	₹72,000
Cleaning visits, 250 kVA unit	1 unit × 2 visits × ₹12,000	₹24,000
Consumables	(2 × ₹8,000) + ₹5,000	₹21,000
AMC or inspection fee	Fixed	₹60,000
Subtotal	₹72,000 + ₹24,000 + ₹21,000 + ₹60,000	₹1,77,000
Contingency at 10%	₹1,77,000 × 0.10	₹17,700
Total	₹1,77,000 + ₹17,700	₹1,94,700

Per flat, that works out to ₹1,94,700 ÷ 600 = ₹324.50 a year, or ₹324.50 ÷ 12 ≈ ₹27 a month.

Some societies also set aside a reserve for eventual filter element or major part replacement. If the committee decides to put away, say, ₹50,000 a year for this, that adds ₹50,000 ÷ 600 ÷ 12 ≈ ₹7 per flat per month, taking the illustrative total to about ₹34 per flat per month.

RECD upkeep is a small, predictable line when planned and an expensive emergency when not. Our sibling guide on tracking RECD service costs per operating hour shows how to refine these assumptions once you have a year of your own data, and the 500 kVA DG set RECD page is a useful reference when you speak to suppliers about units of that size. The illustration excludes DG servicing, fuel and operator salaries.

Housing Society DG Compliance in the First Winter

After sign-off, the next deadline is usually winter. In Delhi NCR, the Commission for Air Quality Management issues directions on DG set use, including restrictions under different GRAP stages; current directions are published on the CAQM website. Our explainer on what changes at each GRAP stage summarises how restrictions tighten as air quality worsens.

Before the season begins, make sure that:

The RECD has been cleaned or serviced as per the supplier’s interval, with post-service readings at a stated load on file.
The consent, RECD certificates and the latest service report are in a folder kept in the DG room or security office, ready for any inspection.
Operators know what to do if an alarm appears during a long outage, and who to call.
The logbook is filled every time a DG set runs.

Non-compliance can lead to sealing and penalties; see what happens when a DG set is sealed for non-compliance.

Red Flags That Justify Refusing Sign-Off

A committee is entitled to say “not yet” when it finds:

Certificate mismatch: the RECD on site does not match the certificate in the file, or there is no certificate at all.
Bypass or removal: the exhaust has been routed around the RECD, or the device has been partly removed or disabled.
Consent problem: the consent has expired, does not list the installed DG sets, or the developer refuses to support its transfer.
No loaded test allowed: the builder will not run the DG sets on load during the inspection.
Visible exhaust leaks: soot staining or fumes at joints inside the DG room.
Unexplained high back-pressure: readings well above the commissioning baseline at similar load, with no service report explaining them.
Missing logbooks: no running or service records for a long period before handover.
Open supplier complaints: unresolved tickets with the RECD supplier that the developer has not disclosed.

Refusing to sign is not a fight. It is a written note listing the red flags, the evidence and the conditions under which the RWA will sign.

If your society is instead buying into a building or a commercial property that already has an RECD, the due diligence questions differ somewhat; see the sibling post on buying a building with an existing RECD.

FAQ

What documents should a builder hand over to the RWA for DG sets with RECDs?

The SPCB consent, RECD certificates matched to serials, test and commissioning reports with baselines, warranty cards, AMC contracts, manuals, as-built drawings, logbooks, spares list and open complaints.

Is the RECD warranty transferable to the society?

It depends on the supplier’s warranty terms. Some warranties follow the equipment, others need re-registration in the new owner’s name. Ask the RECD supplier in writing before sign-off and keep the reply in the handover file.

Should the DG sets be run on load during an RECD handover to RWA?

Yes. Readings taken at no load reveal little about RECD condition. Agree a stated load in advance, record readings with that load noted, and compare them with the commissioning baseline.

Can the RWA withhold part of the maintenance deposit for unresolved RECD snags?

That depends on your buyer agreements, any negotiated settlement and your state’s apartment ownership law. Check the agreement, read the applicable state act and take legal advice before announcing any holdback.

Who should hold the SPCB consent after handover?

Usually the entity responsible for operating the DG sets, which after handover is often the RWA. The transfer or fresh application process varies by state, so confirm with your SPCB.

How much should an RWA budget for RECD upkeep?

It varies with RECD design, running hours and contract terms. In our illustrative example for two 500 kVA and one 250 kVA unit across 600 flats, the cost came to roughly ₹27 to ₹34 per flat per month including a reserve.

Need a Second Opinion Before You Sign?

Aceget supplies CPCB type-approved retrofit emission control devices for DG sets from 25 kVA to 2500 kVA, and works with RWAs and facility teams across Delhi NCR. If your committee wants help reading RECD paperwork before a builder handover, you can review our certifications or contact our team with your DG ratings, RECD nameplate photos and the documents you have received.

RECD Handover from a Developer to an RWA: What Should Be Checked?