What this is
What is an emergency generator test record?
What is an emergency generator test record?
It is the contemporaneous record of a scheduled exercise of standby generation: pre-start condition of fuel, coolant, oil and battery, how the engine behaved running, and what happened when load transferred to it. Its value is the running and transfer data, not the tick that a test occurred.
What is the difference between an off-load run and an on-load test?
An off-load run idles the engine against no electrical load, proving the starter, battery and fuel feed and nothing else. An on-load test applies real or resistive load so the engine reaches operating temperature, the governor and AVR are exercised, and the alternator is proven against demand. NFPA 110 Chapter 8 sets the monthly load-run benchmark.
What does transfer time actually mean?
Transfer time is the interval between loss of the normal supply and the transfer switch closing onto the generator with load carried. It is not how long the engine took to start. NFPA 110 Chapter 4 classifies these systems by the maximum permitted interval, so a record with start time but no transfer time is missing the number that decides whether protected loads survive.
Scope
When is an emergency generator test record required?
This covers one exercise of one standby set, from pre-start checks through transfer and return to mains. It proves capability; it is not a work order, a fuel record, or the plan for what to do when the power goes.
Use this template when
- The scheduled monthly or quarterly exercise of a standby generator, run on load
- A full building transfer test where the site is deliberately dropped onto the set
- A retest after repair, fuel polish, battery replacement or transfer switch adjustment
- A commissioning or acceptance run on a new or relocated set
- The unplanned run after a genuine mains failure, so real performance joins the same series
Do not use it for
- UPS battery autonomy or inverter transfer, which is Uninterruptible Power Supply Check and a different failure window
- Isolating or restoring the supply the set feeds, which is Utility Isolation Record with its own notification trail
- Refrigeration pressures, temperatures and run hours, which belong in Refrigeration Plant Log even after a test excursion
- Standing in for the emergency plan or business continuity procedure, which cover a real outage rather than a test
- The diesel storage and bunding record, an environmental control with its own inspection regime
Compliance mapping
Which ISO 55001 cl.8.1 requirements does this satisfy?
The template sits on ISO 55001 cl.8.1, but its operational content comes from the standby power standards and the emissions rules governing how long an emergency engine may lawfully run.
| Clause | Requirement | Where it lands |
|---|---|---|
| ISO 55001 cl.8.1 | Plan and control the processes needed to meet asset management objectives, and retain evidence they were carried out as planned | Header |
| ISO 55001 cl.9.1 | Determine what to monitor and evaluate asset performance against it; the score and completeness fields are that evaluation | Result |
| NFPA 110 Chapter 8 | Routine maintenance and operational testing of emergency power supply systems, including a scheduled run of defined duration under load | Starting and running |
| NFPA 110 Chapter 4 | Classification of the emergency power supply system by permitted transfer interval and duration of supply at rated load | Transfer |
| ISO 8528-12 | Emergency power supply performance for engine-driven generating sets, covering start behaviour and acceptance of load | Starting and running |
| ISO 45001 cl.8.2 | Establish and periodically test the response to potential emergency situations, a loss of supply drill among them | Before starting |
What it does not cover
- The set ran eight minutes with no load, which leaves the alternator, governor and AVR unproven and adds unburnt fuel to the exhaust rather than clearing it.
- Fuel Condition Checked said Visual only for two years, which records that somebody read a dip level and never tested for water bottoms, sediment or microbial growth.
- Transfer Switch Operated was Manual only, which means automatic transfer is undemonstrated and the site depends on somebody being present at the moment of failure.
- Critical Loads Picked Up was answered Most, which is an open finding rather than a pass, because nobody recorded which loads failed or whether they mattered.
- Return To Mains Successful was left blank at shift end, which means the record cannot show the site back on normal supply with the set left in auto.
Global
Emergency Generator Test Record requirements by country
Standby generation sits across three regimes: electrical installation rules, standby power standards, and emissions permitting that treats an emergency engine differently. Sites forget the third until a regulator asks for run hours.
NFPA 110, Standard for Emergency and Standby Power Systems; 40 CFR Part 63 Subpart ZZZZ
NFPA 110 is adopted by reference into most state and local fire and building codes, enforced by the authority having jurisdiction. Subpart ZZZZ is federal air toxics regulation for stationary engines.
The monthly load run and the transfer interval are code-enforced, not discretionary. Separately, an engine claiming emergency status is capped at 100 hours a year of non-emergency operation including testing, so Test Duration Minutes carries the emissions position.
BS 7671 Section 551; Control of Pollution (Oil Storage) (England) Regulations 2001
BS 7671 is not statute but is the recognised means of complying with the Electricity at Work Regulations 1989. The oil storage regulations are directly enforceable by the Environment Agency.
Changeover must positively prevent paralleling with the distributor's network, which is what a Transfer Switch Operated result of Failed puts in doubt. Bulk diesel serving the set must also be bunded and inspected, under a separate control.
Directive (EU) 2015/2193 on medium combustion plants
Transposed into national law across member states, with permitting thresholds set on rated thermal input and limited derogations for emergency engines.
Where a set is in scope, operating hours must be recorded and the emergency derogation depends on staying inside them. A test regime that overruns turns a resilience control into a permitting breach, which is why duration is captured per test rather than estimated annually.
How to complete it
How to complete an emergency generator test record, step by step
Filling the form is trivial. Four judgement calls decide whether the record proves anything a year later.
The three options are three levels of assurance and the form deliberately does not blend them. If production will not tolerate a transfer this month, record Off load run and accept the weaker evidence rather than claiming a load test because a load bank was nominally connected.
Yes, tested means a sample was drawn and assessed for water, sediment and microbial growth. Visual only means somebody looked. Stale fuel fails silently: a set that started fine last month can refuse this month with no intervening change. Do not upgrade the answer because the fuel is on contract.
This needs a list, agreed before the test, of which loads are critical and which circuits feed them. Without it the answer is a guess dressed as a result. If Any Load Not Supported is populated then All is not available, and that contradiction is the fastest way to spot a record filled in from memory.
Score Percent can sit in the Pass band while one answer is disqualifying. A Failed transfer switch or a Failed start is a resilience failure whatever the arithmetic says, so Action Required should be Yes with a CAPA ID against it. Treating the band as the decision rather than a summary is how single-point failures survive a year of green records.
What auditors find
Most common emergency generator test record findings
These recur when a year of records is read as a series rather than one at a time.
| Finding | Clause | What fixes it |
|---|---|---|
| Twelve months of Off load run, all under ten minutes | NFPA 110 Chapter 8 | Schedule a load bank or controlled transfer, set a minimum duration, and treat any month without load as a deferral needing the same approval as a missed statutory task. |
| Time To Start Seconds usually blank, because the field is not required | ISO 8528-12 | Make it mandatory when Test Type is On load test or Full building transfer. Start time is the leading indicator of battery and fuel-feed degradation, and is worthless as a trend with gaps in it. |
| Transfer Time Seconds recorded with no target held against it | NFPA 110 Chapter 4 | Record the system classification in the asset register and put the permitted interval in the field help, so the technician judges pass or fail at the point of test rather than months later by somebody who does not know the target. |
| Refrigeration Restarted Correctly left unanswered on a chilled site | ISO 22301 cl.8.5 | The field is optional by design but is the whole point of the set on a cold chain site. Make it required at site level, and where refrigeration is deliberately excluded, say so rather than leaving it empty. |
| Battery Condition Good answered Marginal repeatedly, no CAPA raised | ISO 55001 cl.9.1 | Configure reporting so any non-top answer repeating across two consecutive records forces Action Required to Yes. A degrading answer that never quite fails is how a starting battery reaches end of life between tests. |
| Test run hours never aggregated, so the annual emissions position is unknown | 40 CFR Part 63 Subpart ZZZZ | Sum Test Duration Minutes by asset per calendar year alongside genuine emergency running. Where the total nears the allowance, shorten each test rather than cutting frequency, since frequency is what proves reliability. |
Case in point
Case in point: the set that had passed forty-one consecutive tests
A chilled distribution site ran its 800 kVA standby set monthly for three years, every record a pass. The routine never varied: start on the panel, run twelve minutes, stop, sign. Test Type was Off load run on all but two records and Load Applied Percent was blank throughout. Each record was reviewed alone and each was green.
A distribution fault at 01:40 took the site off supply. The set started and reached rated speed, then tripped on overload nine seconds after the transfer switch closed, as the refrigeration compressors all restarted at once against a cold engine. Three attempts, three trips, four chilled chambers lost. The investigation found no engine defect: restart sequencing had never been configured, because the only test that would have exposed it was the one never run. The fix was two fields — Test Type held at On load test with a minimum duration, and Refrigeration Restarted Correctly made required.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
5 sections
- Reference
- MNT-076
- Archetype
- Record
- Record ID
- GEN-2026-000
- Scoring
- Tests passed
- Direction
- High is good
- Singleton
- Yes
- Basis
- ISO 55001 cl.8.1
- Links
- Links Emergency plan, Business continuity
- Tags
- Utilities, Power
- Sections
- 5
- Fields
- 46
- Follow up fields
- 3
- Repeating sections
- 0
- Links out
- 3
Header
12 fieldsRecord ID*
Auto sequence. Format GEN-2026-000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Date and Time*
Completed By*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Asset*
Asset ID*
Format AST-0000.
Links to FDN-002 Asset ID
Off Load Running Proves It Starts
A generator that runs happily with no load can still fail the moment it takes the plant. Test on load, for long enough to reach temperature.
Test Type*
Off load run, on load test, or full building transfer.
Test Duration Minutes*
Load Applied Percent
Before starting
6 fieldsFuel Level Adequate*
- Yes3 pts
- Low1 pt
- Very low0 pts
Fuel Condition Checked*
Diesel degrades and grows microbial contamination in standby tanks. Old fuel is the commonest cause of a failed start.
- Yes, tested3 pts
- Visual only1 pt
- No0 pts
Coolant And Oil Levels Correct*
- Yes3 pts
- Low1 pt
- No0 pts
Battery Condition Good*
- Yes3 pts
- Marginal1 pt
- No0 pts
Charger Working*
- Yes3 pts
- Faulty0 pts
Block Heater Working
- Yes3 pts
- Not fitted2 pts
- Faulty0 pts
Starting and running
9 fieldsStarted First Attempt*
- Yes3 pts
- Second attempt1 pt
- Failed0 pts
Time To Start Seconds
Reached Rated Speed*
- Yes3 pts
- Slow1 pt
- No0 pts
Voltage And Frequency Stable*
- Yes3 pts
- Fluctuating1 pt
- No0 pts
Ran Without Alarm*
- Yes3 pts
- Minor alarm1 pt
- Tripped0 pts
Exhaust Colour Normal
- Yes3 pts
- Slight smoke1 pt
- Heavy smoke0 pts
Coolant Temperature Stable*
- Yes3 pts
- Rising1 pt
- Overheating0 pts
Oil Pressure Normal*
- Yes3 pts
- Low1 pt
- Very low0 pts
No Leaks Observed*
- Confirmed3 pts
- Minor1 pt
- Significant0 pts
Transfer
6 fieldsTransfer Switch Operated*
- Yes3 pts
- Manual only1 pt
- Failed0 pts
Transfer Time Seconds
Critical Loads Picked Up*
- All3 pts
- Most1 pt
- Few0 pts
Refrigeration Restarted Correctly
On a food site the generator exists mainly to save the cold chain. Confirm refrigeration actually restarts.
- Yes3 pts
- Delayed1 pt
- No0 pts
Return To Mains Successful*
- Yes3 pts
- With disturbance1 pt
- No0 pts
Any Load Not Supported
Result
13 fieldsItems Assessed*
Excludes anything marked N/A.
Items Failed*
Score Percent*
Calculated on submission. High is good. N/A items leave the denominator.
Result Band*
- Pass3 pts
- Caution1 pt
- Fail0 pts
Completeness Percent*
How much of the template was actually answered. A high score on a half completed form is not a high score.
Action Required*
Raise the action record, then enter its reference here.
- No2 pts
- Yes0 pts
Priority
- High0 pts
- Medium1 pt
- Low3 pts
CAPA ID
Format CAPA-2026-00000.
Links to FDN-014 CAPA ID
Action Owner
Technician*
Signature*
Engineering*
Second Signature*
MNT-076 · record IDs look like GEN-2026-000 · Links Emergency plan, Business continuity
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
A generator record is useful only if it is scheduled, escalated when it degrades, and read as a series rather than one sheet at a time.
Owns the schedule against the asset register and trends start time, transfer time and load applied, so a degrading answer surfaces before it is a failed start.
Carries the ISO 45001 cl.8.2 side: the loss-of-supply response, the life-safety loads that must be picked up, and the drill programme around it.
Aggregates test run hours against the emergency-engine allowance and holds the diesel storage and bunding controls beside the set.
Reads the series, flags consecutive off-load runs, blank transfer times and repeated Marginal answers, and holds every write for approval.
This template lives in KnowMaintain — asset maintenance. Work orders, planned maintenance, calibration, reliability and shutdowns.
Meet KnowMaintain→Glossary
Emergency Generator Test Record definitions and key terms
- Wet stacking
- Unburnt fuel and oil accumulating in the exhaust of a diesel run at low load, causing fouling, reduced output and smoke. Light unloaded testing is its main cause.
- Automatic transfer switch
- The device that detects loss of supply, starts the generator, transfers load once the set is stable, and returns it to mains on restoration. Its behaviour is the most consequential thing a test can prove.
- Block heater
- A heater keeping engine coolant warm while the set stands, so it takes load quickly without thermal shock. Without one, the set needs longer before accepting full load.
- Emergency engine
- A regulatory class for an engine run only on loss of supply, plus a capped allowance of testing hours. Exceeding it can remove the class and its emissions relief.
- Load bank
- A resistive or reactive load applied so a set can be tested near rated output without transferring real site load. The usual answer where a building transfer is impossible.
FAQ
Frequently asked questions about emergency generator test record
How often should a standby generator be tested?+
Monthly is the benchmark from NFPA 110 Chapter 8, run on load and long enough to reach operating temperature. Sites inside an emissions permit must balance duration against the annual allowance for non-emergency running, but the answer is shorter tests, not fewer.
Does an off-load run count as a test?+
It is evidence the starting system, battery and fuel feed work. It is not evidence the set can carry the site. Off load run stays a valid Test Type precisely so weaker evidence is recorded as such rather than dressed up as a load test.
What load should be applied during the test?+
Enough to reach operating temperature and exercise the governor and AVR under real demand: a meaningful proportion of nameplate rating, not a token load. Where site load is too small, a load bank is the accepted substitute and Load Applied Percent records what was achieved.
Do we need to record the test if the generator ran during a real power cut?+
Yes, and it is the most valuable record in the series, because a real event reveals transfer behaviour and load acceptance under conditions no test replicates. Use the same fields so it joins the same trend, and populate Any Load Not Supported carefully; that field drives design change.
Why does the form ask about refrigeration separately?+
Because on a chilled or frozen site the set exists to save the cold chain, and a switchboard re-energising is not the same as compressors restarting. Restart sequencing, soft-start configuration and simultaneous inrush are the usual failure points, and none show in the electrical result fields.
Who should sign the record?+
The technician who ran the set signs first, being the only person who saw the exhaust, heard the engine and watched the transfer. Engineering countersigns, and that is where the judgement on Action Required and Priority is made. A lone signature from somebody who was not present makes the record indefensible.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in Pressure Systems and Refrigeration
Refrigeration Contractor Verification
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Lists how your activities interact with the environment and how significant each interaction is
Refrigeration Unit Service Record
Records service and performance testing of a transport refrigeration unit, including temperature pull down and refrigerant
Boiler Operation Record
Records boiler operating parameters, water treatment results and blowdown through a shift
Refrigeration Plant Log
Records suction and discharge pressures, temperatures, oil levels and run hours across the refrigeration plant
Water Treatment Record
Records dosing, testing and results for boiler, cooling and process water systems
More in Utilities
Boiler Operation Record
Records boiler operating parameters, water treatment results and blowdown through a shift
Refrigeration Plant Log
Records suction and discharge pressures, temperatures, oil levels and run hours across the refrigeration plant
Water Treatment Record
Records dosing, testing and results for boiler, cooling and process water systems
Legionella Control Record
Records temperature checks, flushing, sampling and cleaning across water systems that can generate aerosols
Steam Trap Survey
Surveys steam traps for failed open and failed closed condition, with the energy cost of each failure
Uninterruptible Power Supply Check
Checks battery condition, autonomy and transfer on systems protecting controls, chillers or data
Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- ISO 55001:2014 — Asset management systems, cl.8.1 and cl.9.1
- NFPA 110 — Emergency and Standby Power Systems, Chapters 4 and 8
- ISO 8528-12 — Engine-driven generating sets, emergency power supply
- BS 7671 — Requirements for Electrical Installations, Section 551
- 40 CFR Part 63 Subpart ZZZZ — NESHAP for Stationary Reciprocating Internal Combustion Engines
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.