How to Audit an RECD Service Report for Missing Information

That is the whole report. Two lines, a scrawled signature and a stamp, handed to a security guard on the way out. Weeks later an inspector asks what was done to the emission control device on DG-2, or a warranty desk asks for the back-pressure trend before a filter cracked, or your finance team asks why the AMC invoice is the same whether the technician stayed four hours or forty minutes. The two lines answer none of it.

An RECD service report is the only durable trace of a visit. If it is thin, the visit effectively did not happen as far as compliance, warranty and trend tracking are concerned. This guide shows you how to audit an RECD service report for missing information, using a deliberately weak specimen, a section-by-section critique, a corrected version and a 25-point scoring checklist you can use from your next visit onwards.

This post judges the paperwork, not the maintenance itself; for that, see our RECD maintenance guide and your supplier’s manual. Your contract and consent conditions always take precedence.

The specimen: a weak RECD service report

Below is an illustrative report for a fictional visit. Every weakness in it is common. Read it as if it had just landed on your desk.

Specimen A — as received (illustrative)

Field	Entry
Customer	Tower B
Equipment	Generator RECD
Date	12/9
Visit type	Service
Work done	Filter cleaned. Checked all.
Readings	Pressure normal. Temp OK.
Parts	Gasket
Remarks	Serviced. All OK. Customer to run DG regularly.
Next visit	As per schedule
Technician	Sd/-
Customer signature	(stamp only)

Nothing here is false. Nothing here is checkable either. Let us take it apart, gap by gap.

Gap 1: identity and traceability

What is missing

“Tower B” and “Generator RECD” do not identify a machine. Many sites have two or more DG sets, sometimes of the same rating, sometimes with RECDs from different suppliers. “12/9” could be 12 September or 9 December, and it has no year. “Service” does not say whether this was a scheduled preventive visit, a breakdown call, a warranty attendance or a follow-up. “Sd/-” is not a name.

Why it matters

Every later use of the report depends on matching it to one asset on one date. A warranty team will tie it to their dispatch serial. An inspector reviewing your file during a pollution control board inspection will want the maintained device to match the DG named in your consent. A report that could belong to any of three machines supports none of them.

What a good entry looks like

• Site name and full address, plus your internal asset ID (for example, DG-2) and the DG make, model, rating and engine serial
• RECD make, model and serial number, copied from the nameplate, not from memory
• Date in an unambiguous format such as 2026-09-12, following the ISO 8601 date convention, with time in and time out
• Technician’s full name, employer, mobile number and, if the service company issues them, an employee or certification ID
• Visit type (preventive, breakdown, warranty, follow-up) and the service provider’s ticket or job number

Time in and time out show whether a “full service” fitted the time on site, and feed directly into tracking RECD service cost per operating hour.

Gap 2: as-found condition

What is missing

“Pressure normal. Temp OK.” gives you no number, no unit, no load and no point of measurement. There is no DG run-hour reading, no mention of alarms, and no photograph of the device before anyone touched it.

Why it matters

As-found readings are the baseline for judging the visit. Back-pressure depends heavily on exhaust flow, which depends on engine load, so a “normal” reading at 20% load says little about behaviour at 75%. That is why comparison tests insist that generator load must be matched before and after.

Without numbers you cannot build a trend either. Rising back-pressure across visits is often the first sign of ash build-up or an engine-side change, and excess back-pressure has its own consequences, covered in our post on how exhaust backpressure affects a DG set.

What a good entry looks like

• DG hour meter reading, and RECD controller hours if your device logs them
• Load at the time of reading, in kW or as a percentage of rating, and how the load was provided (building load, load bank)
• Back-pressure or differential pressure, with units and the measurement point; exhaust temperature upstream and, where fitted, downstream of the RECD
• A list of active and logged alarms or events since the last visit, if the RECD has a controller or display that stores them, or a note saying it does not
• Two or three photographs: nameplate, any gauge or display, and the general condition of the device, clamps and insulation

If your site keeps a shift handover log for the RECD, the technician should note any operator-reported events from it.

Gap 3: work done

What is missing

“Filter cleaned. Checked all.” does not say how the filter was cleaned, whether it was removed, what was checked, or what was found. “Gasket” does not say which gasket, how many, or what part number.

Why it matters

The work-done section is what you pay for, and what a warranty assessor reads. Vague verbs (“checked”, “attended”, “serviced”) cannot distinguish a thirty-minute look from a full strip-down.

Removed soot and ash is a particular blind spot. How much came out is useful data, because ash relative to run hours roughly indicates oil consumption and filter loading; the DieselNet overview of ash in particulate filters explains why ash accumulates. Where it went is a compliance question, covered in our sibling post on handling soot and ash removed during RECD servicing.

What a good entry looks like

• A numbered task list in plain language: “Removed filter module, inspected inlet face, cleaned by method X as per manual section Y, refitted with new gasket, torqued clamps”
• Parts and consumables with part numbers, quantities and, for serialised parts, the serial numbers of the part removed and the part fitted
• Approximate quantity of soot or ash removed (mass or volume), how it was contained, and who took custody of it
• Safety references: permit-to-work number, confirmation that the DG start circuit was isolated under lockout/tagout, and that hot surfaces were allowed to cool. The general principles are summarised on OSHA’s control of hazardous energy page; follow your site’s own procedure.

Gap 4: as-left condition

What is missing

The specimen has no as-left section at all. There is no post-service reading, no leak check and no confirmation that alarms work.

Why it matters

As-left readings prove the work did what it claimed. After cleaning, back-pressure at the same load should fall; if it did not, you want to know now. Leak checks matter because reassembled flanges on hot exhaust can leak soot and, worse, exhaust gas into an enclosed DG room.

What a good entry looks like

• Readings repeated at the same load band as the as-found readings, with the time each was taken
• Leak check method and result at each disturbed joint
• Function test of any alarm, sensor or indicator, stating which ones were tested and how
• One or two after photographs of the reassembled device

Gap 5: settings and firmware

What is missing

The specimen is silent on settings. That might mean nothing changed, or that a setpoint was adjusted to silence a nuisance alarm and nobody wrote it down.

Why it matters

Where the design uses a controller, a changed threshold can hide a developing problem, and a firmware change can alter logging or alarms. Neither should happen invisibly. Our sibling post on RECD firmware update questions to ask before a service visit explains how to agree such changes in advance.

What a good entry looks like

• An explicit statement: “No settings or firmware changed” if that is the case
• Otherwise, each changed parameter with its before and after value, the reason, and who authorised it
• Firmware or software version before and after, if the device has any

Gap 6: instruments used and calibration

What is missing

The specimen does not say what measured “pressure normal”. A panel gauge? A handheld manometer? A thermocouple stuck in a test port?

Why it matters

A reading is only as good as its instrument. An out-of-calibration handheld gauge makes every number, and every trend built on it, suspect. Our guide to RECD test instrument calibration records explains what a calibration certificate should show.

What a good entry looks like

• For each reading, the instrument used (installed panel gauge, or handheld device with make, model and asset ID)
• For handheld instruments, the calibration due date, with the certificate available on request

Gap 7: deviations and recommendations

What is missing

“Customer to run DG regularly” is advice, not a finding. It has no reason, no priority and no due date. “Next visit: as per schedule” leaves you to work out the schedule.

Why it matters

Recommendations are where risk transfers. “Check engine” with no detail makes it your problem without giving you anything to act on. Engine-side findings must reach the right people; see our sibling post on coordinating DG engine repairs with the RECD service team.

What a good entry looks like

• Each finding stated as an observation, with evidence: “Oil residue at turbo outlet flange, photo 6”
• A priority (for example, immediate, before next visit, monitor) and a due date in ISO format
• An owner: service company, site maintenance team or DG engine AMC provider
• Any open item from the previous report, marked closed or carried forward
• The next scheduled visit date, not “as per schedule”

Gap 8: sign-offs

What is missing

A company stamp with no name is not a witness. “Sd/-” is not a signature you can trace.

Why it matters

A client witness signature turns a supplier’s document into a shared record, confirming your side saw the readings and work. It is also your moment to note a gap before signing.

What a good entry looks like

• Technician name, signature and date
• Client witness name, designation, signature and date, with a line for comments (“readings witnessed”, “photos not yet received”)
• Where reports are digital, a timestamped e-signature or an emailed PDF from the service company’s official address

The corrected specimen: what the same visit should have produced

Here is the same visit, properly recorded. All values are illustrative, not specifications for any device.

Specimen B — complete version (illustrative)

Section	Entry
Site / asset	Tower B, (full address), asset DG-2, 500 kVA, engine serial ########
RECD	Make / model as per nameplate, serial ######## (photo 1)
Date and time	2026-09-12, in 10:05, out 13:40
Visit type / ticket	Preventive, quarterly; job no. 2026-0917
Technician	Full name, employer, mobile, employee ID
Safety	Permit no. 448; DG start circuit isolated and tagged 10:20; device allowed to cool before opening
As-found	Hour meter 3,412.6 h. Load 300 kW (approx. 75% of 400 kW prime) on building load. Back-pressure 9.8 kPa at RECD inlet port, exhaust temp 455 °C upstream. Controller log: 2 high-ΔP warnings since last visit (dates listed). Photos 2–4
Work done	1. Removed filter module. 2. Inspected inlet face: even soot layer, no cracks. 3. Cleaned per manual section 6.2. 4. Replaced inlet gasket (part no. ####, qty 1). 5. Refitted, clamps torqued per manual
Material removed	Approx. 1.2 kg soot and ash, bagged and sealed, handed to site EHS (receipt no. 77)
As-left	Load 300 kW. Back-pressure 6.1 kPa, exhaust temp 450 °C. Soap-solution leak check at inlet and outlet flanges: no leaks. High-ΔP alarm simulated and confirmed on panel. Photos 5–6
Settings / firmware	No settings or firmware changed. Version read: as displayed (photo 4)
Instruments	Handheld manometer, asset HM-03, calibration due 2027-02-15; installed exhaust thermocouple
Findings	(a) Oil residue at turbo outlet flange, photo 6. Priority: before next visit. Owner: DG engine AMC. Due 2026-10-15. (b) Two high-ΔP warnings coincide with low-load operation logged by operators. Priority: monitor. Owner: site.
Previous open items	Insulation tear at outlet bend (report dated 2026-06-14): repaired, closed
Next visit	2026-12-12
Sign-off	Technician signature; client witness (name, designation), “readings and photos witnessed”, 2026-09-12

Now you can check the result. Back-pressure fell from 9.8 to 6.1 kPa at the same load: 9.8 − 6.1 = 3.7 kPa, or 3.7 ÷ 9.8 = about 38%. Whether that is good depends on the clean baseline from commissioning, but the question can now be asked.

A 25-point RECD service report checklist with scoring

Use this checklist on every report. Score each item 0, 1 or 2:

• 0 — absent
• 1 — present but vague, unitless or unverifiable
• 2 — complete and checkable

The 25 points

Identity and traceability

1. Site name, address and internal DG asset ID
2. RECD make, model and serial number
3. Date in unambiguous format, with time in and time out
4. Technician full name, employer and contact
5. Visit type and job or ticket number

As-found condition

6. DG hour meter (and RECD hours if logged)
7. Load at time of reading, with how it was provided
8. Back-pressure or ΔP and exhaust temperature, with units and measurement point
9. Alarm or event log reviewed, or “no log available” stated
10. As-found photographs

Work done

11. Specific, numbered task list
12. Parts and consumables with part numbers, quantities and serials
13. Quantity of soot or ash removed, and custody of it
14. Reference to the manual procedure followed
15. Safety: permit and lockout/tagout recorded

As-left condition

16. Readings at the same load band as as-found
17. Leak check method and result
18. Alarm and sensor function test
19. As-left photographs

Settings, instruments and findings

20. Settings changes with before and after values, or “none” stated
21. Firmware or software version recorded, or “not applicable” stated
22. Instruments identified, with calibration due dates
23. Findings with evidence and priority
24. Recommendations with owner and due date; previous open items closed or carried

Sign-off

25. Technician and client witness names, signatures and dates

Scoring thresholds

The maximum score is 25 × 2 = 50.

Score	Percentage	Decision
40–50	80–100%	Accept and file
30–39	60–78%	Accept with query; hold invoice until gaps are answered
0–29	0–58%	Reject; ask for a reissued report

Override rule: if items 2, 8, 16 or 25 score 0, reject regardless of total. Without device identity, readings or signatures, a report is not usable evidence.

Specimen A scores roughly 7 out of 50, with a few 1s for vague presence and mostly 0s. Specimen B scores 48 or above: the gap between a receipt and a record.

Service report red flags worth a second look

These red flags suggest a problem with the visit itself, not just the paperwork:

• Identical readings across visits. Real readings drift. The same “8.0 kPa” four quarters running suggests copying.
• As-left equals as-found to the decimal after a claimed cleaning. Either nothing was cleaned or nothing was measured.
• Time on site shorter than the task list allows, such as a filter removal and refit in 35 minutes including cool-down.
• Parts listed but not seen. If a new sensor was fitted, ask for the removed one or a photo of its serial.
• Readings taken with the DG off. Back-pressure is meaningless at zero flow.

None proves misconduct alone; each is a reason to ask.

How to push back without souring the relationship

Most gaps come from habit, not bad intent: a carbon-copy pad with five fields. A specific, factual query usually fixes it within two or three visits.

Subject: Service report 2026-0917, DG-2 RECD, visit on 2026-09-12: information requested

Dear (Service Coordinator),

Thank you for the visit. Before we file the report and process the invoice, we need these details for our warranty and compliance records:

1. RECD serial number and DG asset ID (the report states “Generator RECD” only).
2. As-found and as-left back-pressure and exhaust temperature, with units, measurement point and DG load at each reading.
3. Part number and quantity of the gasket fitted.
4. Approximate quantity of soot or ash removed and who took custody of it.
5. Identification and calibration due date of the instrument used.
6. Technician’s full name, and confirmation whether any settings or firmware were changed.

Please also share visit photographs, and send the revised report by 2026-09-26. From the next visit, kindly use the attached report format.

Regards, (Name, designation, site)

Attach your template to the first such email. If you use an independent firm, see our post on whether a third-party service company should maintain your RECD, since report quality is a clear way to judge them.

Building the requirement into the AMC

Queries fix reports; contracts fix the pattern. At renewal, make complete reporting a deliverable.

Attach the report template as an annexure

Make your template, essentially Specimen B with blank fields, a contract annexure: each visit produces a report in that format, signed by both parties, delivered as a PDF within a fixed number of working days, with specified photos.

Link payment to a complete report

Tie each visit’s payment, or each quarterly instalment, to receipt of reports scoring at or above your accept threshold. This is simple to administer and changes behaviour quickly. Our guide on how to negotiate an AMC contract for your generator covers how to raise such terms without pushing the price up unreasonably.

Specify readings at defined load

Agree the load band, load source (building load or load bank) and measurement points in writing.

Define response and closure for findings

Link the AMC’s findings section to your RECD service response commitments, so a “before next visit” finding has a named owner and a date that both sides recognise.

Keep the evidence trail warranty-ready

If something fails in warranty, a run of complete reports is your strongest support; see our post on what to record when raising an RECD warranty claim.

Illustrative audit: six months of reports at one site

A Delhi NCR site has two RECD-fitted DG sets, each visited monthly under one AMC: 2 sets × 6 months = 12 reports from April to September 2026. All scores are illustrative.

Month	DG-1 score	DG-2 score	DG-1 %	DG-2 %	Decision (DG-1 / DG-2)
April	18	21	36%	42%	Reject / Reject
May	22	24	44%	48%	Reject / Reject
June	26	25	52%	50%	Reject / Reject
July	34	36	68%	72%	Query / Query
August	40	41	80%	82%	Accept / Accept
September	44	46	88%	92%	Accept / Accept

Each percentage is score ÷ 50 × 100. For example, 34 ÷ 50 × 100 = 68%.

Working through the totals

• Total score across 12 reports: 18 + 21 + 22 + 24 + 26 + 25 + 34 + 36 + 40 + 41 + 44 + 46 = 377
• Average score: 377 ÷ 12 = 31.4, or 31.4 ÷ 50 = about 63%
• April to June total: 18 + 21 + 22 + 24 + 26 + 25 = 136; average 136 ÷ 6 = 22.7 (about 45%)
• July to September total: 34 + 36 + 40 + 41 + 44 + 46 = 241; average 241 ÷ 6 = 40.2 (about 80%)
• Check: 136 + 241 = 377
• Decisions: 6 reject, 2 query, 4 accept; 6 + 2 + 4 = 12

What the trend tells you

The July step change followed the query email, the template and notice that invoices would be held for reports below 40. Average scores rose by 40.2 − 22.7 = 17.5 points between the two quarters.

The 63% average looks mediocre, but the trend matters more. The site now has usable matched-load readings to start a back-pressure trend per DG. The earlier reports still feed cost tracking through hour readings and dates, but cannot support claims about device condition. At about ten minutes per report, the half-year audit took roughly two hours.

Where the audited reports go next

File each scored report with its asset in date order, and copy readings into a spreadsheet (date, hours, load, back-pressure, temperature). After four or five complete reports, plot back-pressure against hours.

CAQM directions govern DG use in Delhi NCR, including during GRAP stages; current directions are on the Commission for Air Quality Management site. Confirm any record-keeping expectations in your SPCB consent rather than assuming. Complete RECD service reports will not prove compliance alone, but “Serviced. All OK.” slips certainly will not help.

FAQ

What should an RECD service report include at minimum?

At minimum: the RECD serial and DG asset ID, an unambiguous date, the technician’s name, as-found and as-left readings with units and DG load, a specific task list, parts with part numbers, any findings with owner and due date, and signatures from both the technician and a client witness.

Should I refuse to sign an incomplete service report?

You can sign with a comment such as “readings not recorded; report to be revised” instead of refusing outright. That records the gap at the time and keeps the relationship workable. Then follow up in writing.

How often should I audit service reports?

Score every report on arrival, about ten minutes each. Review the trend quarterly, ideally before AMC payment or renewal.

Does a complete service report prove my RECD is compliant?

No. A service report records maintenance; it is not an emission test. Compliance depends on the device’s type approval, correct installation, your consent conditions and, where required, testing by a recognised laboratory. Check current requirements with CPCB guidance via cpcb.nic.in and your SPCB.

Want service records you can actually rely on?

Aceget supplies CPCB type-approved retrofit emission control devices for DG sets from 25 kVA to 2500 kVA, and we are happy to discuss what a complete service report should look like for your installation. You can review our type approval and certification documents, or talk to our team about service planning and documentation for your site.

Related Reading

• How to Track RECD Service Costs per Operating Hour
• Handling Soot and Ash Removed During RECD Servicing
• RECD Firmware Updates: Questions to Ask Before a Service Visit
• How to Coordinate DG Engine Repairs with the RECD Service Team
• What to Record When Raising an RECD Warranty Claim
• RECD Maintenance Guide