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Boiler log and inspection checklist

A boiler log sheet and boiler inspection checklist for commercial and industrial steam and hot water boilers, filled in on a phone in the boiler room. Add each plant room and each boiler in it, scan the data plate, then log readings each round: pressure, temperature, water level, stack temperature, fuel, blowdown, low water cutoff test and initials, against the operating limits you enter. The periodic inspection covers burners, controls, relief valves, gauge glass, low water cutoffs, water treatment and combustion readings, refractory, leaks and flue. For a domestic gas boiler service use the boiler service checklist; for the competent person's examination use the pressure system inspection record.

For stationary engineers, boiler operators, facility managers and maintenance contractors running boiler plants in hospitals, schools, offices and factories.

The form works in the US, the UK and elsewhere: choose where the plant is and it asks for the state or city certificate per boiler, or the UK written scheme of examination and the competent person's examination.

  • Plant rooms as spaces and boilers as items, each with a data plate scan, status and certificate
  • A shift log per boiler with highest and lowest readings worked out against the limits you enter
  • Failed low water cutoff tests and abnormal water levels counted and flagged
  • 14 periodic inspection checks per boiler, plus water treatment and combustion readings against your contractors' targets
  • Statutory inspection dates, actions with priority and owner, and two signatures
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What should a boiler log include?

A boiler log is useful when every reading sits next to that boiler's own operating limits, so a reading out of range or a low water cutoff that failed stands out on the day, not at the next inspection. Each round needs a time and initials, and a failed safety device test needs a note saying what was done straight away.

Last updated . Facts checked by the SiteSurvey team on 27 October 2026 against Pressure Systems Safety Regulations 2000, regulation 8 (legislation.gov.uk), Pressure Systems Safety Regulations 2000, regulation 9 (legislation.gov.uk), Pressure Systems Safety Regulations 2000, regulation 11 (legislation.gov.uk), HSE, Pressure Systems Safety Regulations 2000 (PSSR), HSE, Using pressure systems and Minnesota Statutes 2025, section 326B.958 Inspection and registration.

How to keep a boiler log

Set the operating limits once from the boiler's operating instructions, certificate or maker, then log every round.

  1. Set up the log

    Enter the plant, the shift and whether this record is a log, a periodic inspection or both. Add each plant room and each boiler, and scan the data plate.

  2. Enter the limits

    For each boiler, enter the lowest and highest normal pressure and temperature and the highest stack temperature, with where they come from. The form supplies none of its own.

  3. Log each round

    Record the time, pressure, temperature, water level, stack temperature, fuel reading, blowdown and low water cutoff test, with your initials. The form shows the highest and lowest values and flags any limit exceeded or cutoff that failed.

  4. Do the periodic inspection

    Check burner and flame, flame safeguard, controls, relief valves, gauge glass, low water cutoffs, gauges, feedwater, refractory, leaks, flue and blowdown, and enter water treatment and combustion readings against your contractors' targets.

  5. Close out

    Record the certificate or written scheme position, give each problem an action with an owner and a date, choose the decision and sign with the plant manager.

What makes a boiler log useful

Shift log: readings per round against the limits you enter, and the low water cutoff test

B-2, 09:30: 10 psi, 239 °F, level normal in the glass, stack 390 °F, blowdown done. Low water cutoff test: did not cut out, burner kept firing below the cutoff mark. Burner shut down by hand, B-2 isolated, plant manager told, burner contractor called. B-1 carrying the load.

Fictional example. Record the actual evidence and approved arrangements for your job.

A common recording mistake

Ticking the low water cutoff test as done without watching the burner shut down and the alarm sound, or carrying on with the boiler on line after a failed test.

What happens next

Keep the failed boiler out of service until the device is repaired and retested, record the retest, and give the plant manager the log with the actions and their owners.

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Every question in the boiler log template

A boiler room log and inspection for commercial steam and hot water boilers: plant rooms and boilers with data plate scans, a shift log per boiler (pressure, temperature, water level, stack temperature, fuel, blowdown, low water cutoff test, initials) against operating limits you enter, periodic inspection checks, water treatment and combustion readings against your contractors' targets, the US certificate or UK PSSR written scheme and examination, actions and sign-off. 6 sections and 161 questions. Follow-up questions and guidance appear only when an answer calls for them, so the person on site never sees the ones that do not apply.

Make it your own: every question is editable

This is a starting point, not a fixed form. Once it is in your SiteSurvey account you can reword any question, add or remove questions, sections and answer options, and add your own logo, so it fits the way your team works and the jobs you do.

Details you only enter once

Add this form to a project in SiteSurvey and it fills in what the project already knows, so nobody on site retypes it and every form on the job uses the same names. Anything filled in can still be changed.

  • Project: the project name
  • Site address: the site address, from the space or the project
  • Client or owner: the project's customer

Log details

Fill in at the start of the shift or visit.

  • ProjectShort answer

    Filled in from the project in SiteSurvey.

    Fills in from the project name
  • Site addressShort answer
    Fills in from the site address, from the space or the project
  • Client or ownerShort answer
    Fills in from the project's customer
  • Location (GPS)Short answer
  • Log date*Date
  • Logged by*Short answer
  • Building or plantShort answer
  • Where is the plant?*Choose one

    Sets which statutory inspection questions you see.

    • US
    • England, Wales or Scotland
    • Northern Ireland
    • Other country
  • What does this record cover?*Choose one
    • Shift or daily log only
    • Log and periodic inspection
    • Periodic inspection only
  • ShiftChoose one
    • Day
    • Evening
    • Night
    • Whole day
    • Not applicable
  • Operating or maintenance contractorShort answer
  • CheckThis is an operator's log and inspection record. It is not a statutory boiler inspection, an examination under a written scheme or a certificate. Pressures, temperatures, set points, water treatment targets and combustion figures come from the maker, the boiler's certificate, the operating instructions or your contractors.
  • Walk Cam: boiler room walk-roundWalk Cam video with voice-to-text

    Optional. Film a guided walk-round on the SiteSurvey app.

Plant rooms and boilers

  • GuidanceAdd each plant room, then each boiler in it. Scan the data plate and photograph the boiler with its certificate.
  • GuidanceIn the US, state and city rules decide who inspects boilers, how often and what certificate is issued. For example, Minnesota Statutes 326B.958 requires the owner to have a boiler inspected at least annually after the initial inspection, and the inspector's label on the boiler is the inspection certificate. Check the rules where the plant is.
    Shown when “Where is the plant?” is “US”
  • Plant rooms
    Repeat for each plant room. Each one asks:
    • Plant room*Short answer

      For example Main boiler room, Basement plant room.

    • Where is it?Short answer
    • Photos of the plant roomPhotos
    • Boiler room clear of storage and combustible materialsChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Combustion air openings and louvres clearChoose one

      Fuel-fired plant. Mark Not applicable for electric boilers.

      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Emergency shut-off switch and fuel shut-off valve accessible and labelledChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Operating instructions and emergency procedures available at the plantChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Gas or carbon monoxide detection working, where fittedChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Pipework, valves and insulation: no leaks, damage or missing laggingChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Lighting, access and housekeepingChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Inspection certificate or label displayed where the local rules require oneChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Boilers in this plant room
      Repeat for each boiler. Each one asks:
      • Boiler tag*Short answer

        As marked on the boiler, for example B-1.

      • Type of boilerChoose one
        • Steam boiler, low pressure
        • Steam boiler, high pressure
        • Hot water heating boiler
        • Hot water supply boiler
        • Other
      • FuelChoose one
        • Natural gas
        • Oil
        • Dual fuel (gas and oil)
        • Electric
        • Biomass
        • Other
      • Data plateScan a label: make, model, serial number, year built, maximum allowable working pressure, input or output rating, state or registration number

        Optional. Scan the data plate or label to capture the numbers.

      • Make and modelShort answer
      • Serial numberShort answer
      • Maximum allowable working pressure, as on the data plate or certificateShort answer

        Copy it with its units. The form does not supply it.

      • Input or output ratingShort answer
      • Status today*Choose one
        • In service
        • On standby
        • Out of service
      • State or city inspection certificate numberShort answer
        Shown when “Where is the plant?” is “US”
      • Certificate expiryDate
        Shown when “Where is the plant?” is “US”
      • Certificate in date?Yes or No
        Shown when “Where is the plant?” is “US”
      • Photos: boiler, data plate and certificatePhotos
      • Certificate issueWorked out by the form
    • This plant room: boilersWorked out by the form
    • Plant room checks needing actionWorked out by the form
    • Not checkedWorked out by the form
    • Certificates not in dateWorked out by the form
  • All plant rooms: boilersWorked out by the form
  • All plant rooms: checks needing actionWorked out by the form
  • All plant rooms: certificates not in dateWorked out by the form

Shift log

  • GuidanceOne log per boiler. Add a reading for each round. Readings are compared with the limits you enter for that boiler.
  • Boiler logs
    Repeat for each boiler log. Each one asks:
    • Boiler tag*Short answer
    • Units used in this logShort answer

      For example psi and °F, or bar and °C.

    • GuidanceEnter the operating limits from the boiler's operating instructions, certificate or maker. Leave a limit blank if there is none. The form does not supply any.
    • Pressure: lowest normalNumber
    • Pressure: highest normalNumber
    • Temperature: lowest normalNumber
    • Temperature: highest normalNumber
    • Stack temperature: highest normalNumber
    • Where the limits come fromShort answer

      For example operating instructions rev 4, burner tuning report.

    • Readings
      Repeat for each reading. Each one asks:
      • Time*Time
      • Operator initials*Short answer
      • PressureNumber
      • Water or steam temperatureNumber
      • Water levelChoose one
        • Normal, visible in the gauge glass
        • Low
        • High
        • Not visible in the glass
        • Not applicable (hot water boiler)
      • Stack (flue gas) temperatureNumber
      • Fuel readingShort answer

        Meter reading, tank level or firing rate, as your log uses.

      • Blowdown done?Yes or No
      • Low water cutoff testChoose one
        • Tested: burner cut out and alarm sounded
        • Tested: did not cut out
        • Not tested this round
      • Notes or action takenNotes
    • Readings takenWorked out by the form
    • Highest pressureWorked out by the form
    • Lowest pressureWorked out by the form
    • Highest temperatureWorked out by the form
    • Lowest temperatureWorked out by the form
    • Highest stack temperatureWorked out by the form
    • Limits exceededWorked out by the form
    • Water level not normalWorked out by the form
    • Low water cutoff tests failedWorked out by the form
    • This boilerWorked out by the form
    • WarningA low water cutoff did not shut the burner down. Follow your site procedure for a failed safety device and record what was done.
      Shown only when the answers above make it relevant
  • All logs: readings takenWorked out by the form
  • Limits exceededWorked out by the form
  • Water level not normalWorked out by the form
  • Low water cutoff tests failedWorked out by the form

Periodic inspection

  • GuidanceOne entry per boiler inspected. Test safety devices as the maker's instructions and your site procedure say.
  • Boilers inspected
    Repeat for each boiler. Each one asks:
    • Boiler tag*Short answer
    • Inspected byShort answer
    • Burner and flame: burner clean, ignition reliable, flame as the maker describesChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Flame safeguard: flame failure shutdown tested as the maker saysChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Operating and high limit controls work at the settings in the operating instructionsChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Safety or relief valves: no leaking, discharge pipe secure and clear, tested as the maker and your procedure sayChoose one

      Set pressures are stamped on the valve and set by the boiler's design and certificate. The form does not give them.

      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Gauge glass and water column: clean, cocks work, level returns after blowdownChoose one

      Steam boilers. Mark Not applicable for hot water boilers.

      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Low water cutoffs: tested as the maker says, burner shuts down and alarm soundsChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Pressure and temperature gauges readable and workingChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Feedwater pumps, controls and condensate return workingChoose one

      Steam boilers. Mark Not applicable for hot water boilers.

      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Water treatment: chemical feed working, readings entered belowChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Combustion analysis done and results entered belowChoose one

      Fuel-fired boilers.

      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Refractory, casing and doors: no cracks, hot spots or damageChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • No water, steam, fuel or flue gas leaksChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Flue, breeching and chimney: secure, no leaks or corrosion, draft control worksChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • Blowdown valves and piping: operate, no leaks, discharge to a safe placeChoose one
      • Acceptable
      • Action needed
      • Not checked
      • Not applicable
    • What needs doing, or why not checkedNotes
      Shown only when the answers above make it relevant
    • This boiler: checks needing actionWorked out by the form
    • Not checkedWorked out by the form
    • Photos of what needs actionPhotos
      Shown only when the answers above make it relevant
  • All boilers: checks needing actionWorked out by the form
  • Not checkedWorked out by the form
  • Water treatment and combustion readings
    Repeat for each reading. Each one asks:
    • Boiler tag*Short answer
    • Type of reading*Choose one
      • Boiler water treatment
      • Feedwater or condensate
      • Combustion analysis
      • Other
    • Reading*Short answer

      For example TDS, pH, sulfite, hardness, O2, CO, CO2, efficiency.

    • Measured*Number
    • UnitsShort answer
    • Target lowestNumber

      From the water treatment contractor, the maker or the burner tuner. Blank if none.

    • Target highestNumber
    • Where the targets come fromShort answer

      For example treatment contractor control sheet, burner commissioning report.

    • Against the targetsWorked out by the form
    • What was done about itNotes
      Shown when “Against the targets” is “Outside the targets”
  • Readings enteredWorked out by the form
  • Outside the targetsWorked out by the form
  • Treatment or combustion reports (photo or file)Photos

Statutory inspection

  • GuidanceEach boiler's certificate number and expiry are on page 2. Record any open items from the last inspector's report here.
    Shown when “Where is the plant?” is “US”
  • Written scheme of examination in place for the boilers and their protective devices?*Yes or No
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • CheckPressure Systems Safety Regulations 2000 regulation 8: the user of an installed system must not operate it without a written scheme for periodic examination by a competent person of the protective devices, the pressure vessels and the pipework where a defect may give rise to danger. HSE says the regulations cover steam at any pressure and pressurised hot water above 110 °C.
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • Written scheme referenceShort answer
    Shown when “Written scheme of examination in place for the boilers and their protective devices?” is Yes
  • Competent person (organisation)Short answer
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • Last examinationDate
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • Next examination due byDate
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • Written report of the last examination held?Yes or No
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • GuidanceRegulation 9: the parts in the scheme are examined by a competent person within the intervals in the scheme, and the competent person sends a signed, dated written report, within 28 days of the examination or before the date given in the report, whichever is sooner. Record the examination itself on the pressure system examination record.
    Shown when “Where is the plant?” is “England, Wales or Scotland”
  • Inspecting authority or insurerShort answer
    Shown when “Where is the plant?” is “US”
  • Last state or insurer inspectionDate
    Shown when “Where is the plant?” is “US”
  • Open items from the last inspection or examination report?Yes or No
    Shown only when the answers above make it relevant
  • What is still openNotes
    Shown when “Open items from the last inspection or examination report?” is Yes
  • Local rules followedShort answer

    Name the rules or the inspecting body.

    Shown only when the answers above make it relevant
  • Certificates or reports (photo or file)Photos
  • Statutory items needing actionWorked out by the form

Result, actions and sign-off

  • Items needing actionWorked out by the form
  • ResultWorked out by the form
  • Actions
    Repeat for each action. Each one asks:
    • Action*Notes
    • PriorityChoose one
      • Safety: now
      • This shift
      • Within a week
      • Next planned visit
    • Who will do it*Short answer
    • Due byDate
    • Status*Choose one
      • Open
      • In progress
      • Done, checked
    • Photo when donePhotos
      Shown when “Status” is “Done, checked”
  • Actions still openWorked out by the form
  • Decision*Choose one
    • All boilers fit to run
    • Run, with the listed actions
    • Boiler taken out of service
  • Next check or re-inspection dateDate
  • Summary for the clientNotes
  • Operator or engineer nameShort answer
  • Operator or engineer signature*Signature
  • Site or plant manager nameShort answer
  • Site or plant manager signatureSignature

See it filled in

A completed boiler log report, made by SiteSurvey from a fictional site visit: every answer, the photos, the guidance that applied and the sign-off, ready to send as a PDF.

See completed form (PDF) ↗

Boiler log FAQs

Who has to inspect a commercial boiler in the US?

It depends on the state or city. As one example, Minnesota Statutes 326B.958 requires the owner to have a boiler inspected at least annually after the initial inspection; the inspector's label on the boiler, showing the month and year and the inspection agency, is the inspection certificate, and a boiler found unsafe must not run until the defects are corrected and verified. The form records each boiler's certificate number and expiry and the last inspection. Check the rules where your plant is.

Source: Minnesota Statutes 2025, section 326B.958 Inspection and registration.

Is a boiler covered by the Pressure Systems Safety Regulations?

HSE says PSSR covers systems containing a relevant fluid, which includes steam at any pressure and pressurised hot water above 110 °C, and names a steam boiler as an example of an installed system. Under regulation 8 the user must not operate the system without a written scheme for periodic examination by a competent person of the protective devices, pressure vessels and pipework where a defect may give rise to danger. The form asks whether the scheme is in place.

Sources: HSE, Pressure Systems Safety Regulations 2000 (PSSR) and Pressure Systems Safety Regulations 2000, regulation 8 (legislation.gov.uk).

How quickly must the competent person send the examination report?

Regulation 9 of PSSR says the competent person makes a written report of the examination, signs or names it, dates it and sends it to the user within 28 days of completing the examination, or before the date given in the report if that is sooner. The form records the last examination, the next due date and whether the report is held; record the examination itself on the pressure system examination record.

Source: Pressure Systems Safety Regulations 2000, regulation 9 (legislation.gov.uk).

Does the form tell me the safe pressure, relief valve setting or low water cutoff test interval?

No. Those come from the boiler maker, the boiler's certificate, the design and your site procedure. HSE says the user should know the safe operating limits and keep protective devices such as safety valves adjusted to their correct settings and in good working order. You enter the limits for each boiler and the form compares every reading against them.

Source: HSE, Using pressure systems.

Do operating instructions have to be kept at the boiler?

In Great Britain, PSSR regulation 11 requires the user to provide adequate and suitable instructions for safe operation and for the action to take in an emergency, and to make sure the system is only operated in line with them. The plant room checks include whether the operating instructions and emergency procedures are available at the plant.

Source: Pressure Systems Safety Regulations 2000, regulation 11 (legislation.gov.uk).

Is this a boiler inspection certificate?

No. It is an operator's log and inspection record kept with photos, data plate scans and a PDF report you can share. It does not replace the state or insurer inspection, the competent person's examination under a written scheme, or any certificate. It shows what was logged and checked, and what was done about it.

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