What this is
What is a boiler operation record?
What is a boiler operation record?
It is the shift log an attendant completes at the boiler itself, capturing steam pressure, flue gas temperature, water level and burner behaviour alongside the water treatment chemistry that keeps the tubes from scaling or corroding. It is a singleton register, set up once per plant and maintained every shift rather than raised per event.
What counts as an operating parameter being 'in range'?
Range is set against the boiler manufacturer's operating envelope and the water treatment supplier's chemistry targets, not against a generic house standard. Water level, burner cycling, TDS, alkalinity and phosphate reserve each have their own tolerance band, and the record scores each reading rather than an overall impression of the shift.
Why does water treatment chemistry sit inside the boiler log rather than a separate record?
Because a chemistry reading only means something next to the operating conditions it was taken under. Total dissolved solids at a given blowdown frequency and steam demand tells you whether the treatment programme is holding; read in isolation it is just a number. Keeping both in one shift entry is what lets a reviewer see cause and effect.
Scope
When is a boiler operation record required?
This is a shift-by-shift operating log for one boiler, not a substitute for the statutory written scheme or a chemistry-only treatment register. Using it to cover ground that belongs to a neighbouring template breaks the trend it exists to build.
Use this template when
- A boiler attendant is on shift and needs to record operating parameters and water treatment readings at the round
- A new boiler or boiler plant is being brought into the register for the first time
- You are running the Pressure Systems and Refrigeration programme and this log is one of its evidence points
- A linked record depends on this one existing, such as the steam trap survey or energy log
- An efficiency variance or work order needs to be traced back to the operating conditions that caused it
Do not use it for
- Water Treatment Record, which is the standalone dosing and testing register for boiler, cooling and process water systems when chemistry is managed independently of shift attendance.
- Steam Trap Survey, which assesses individual trap condition across the distribution network rather than boiler-side operating parameters.
- Boiler Attendant Log, which is the statutory attendance record for the written scheme rather than the operational chemistry and parameter trend.
- Refrigeration Plant Log, which covers suction and discharge pressures, oil levels and run hours on refrigeration plant, not boilers.
- Anything outside KnowMaintain, which belongs to the workspace that owns that process.
Compliance mapping
Which ISO 55001 cl.8.1 requirements does this satisfy?
The template is built against ISO 55001 cl.8.1, operational planning and control for physical assets. Each section below maps to a distinct control the clause expects to see evidenced.
| Clause | Requirement | Where it lands |
|---|---|---|
| ISO 55001 cl.8.1 | Establish criteria for the operation of assets and control operation in accordance with those criteria | Operating parameters |
| ISO 55001 cl.8.1 | Control planned changes and review the consequences of unintended changes, including drift in a controlled process | Water treatment |
| ISO 55001 cl.8.1 | Retain documented information to the extent necessary to have confidence that operational controls are being carried out as planned | Header |
| ISO 55001 cl.8.1 | Identify asset-related risks that could affect the ability to achieve intended outcomes and act on efficiency loss before it becomes a failure | Efficiency |
| ISO 55001 cl.8.1 | Ensure outsourced or delegated operational activity, such as raising a corrective action, is controlled and its owner identified | Result |
| ISO 55001 cl.8.1 | Determine the competence of persons performing operational activity that affects asset performance | Header |
What it does not cover
- A shift entry completed from memory after the round, which loses the moment-of-reading accuracy that makes a trend meaningful.
- Blowdown recorded as 'Not due' with no interval evidence behind it, which lets a deferred blowdown pass as a compliant answer.
- A marginal water treatment reading left unescalated, which is exactly the pattern that precedes slow tube failure.
- Condensate marked 'Not checked' rather than tested, which removes the only early signal of process contamination entering the boiler feed.
- A completeness percentage below the required threshold treated as a pass, which mistakes an unanswered field for a good result.
Global
Boiler Operation Record requirements by country
Boiler operation sits under statutory pressure system regimes as well as management-system standards, and the three that carry the most weight for this log are different in character.
Pressure Systems Safety Regulations 2000
PSSR requires a written scheme of examination by a competent person, separate from this operational log.
This shift record is the evidence that the boiler was actually run within the parameters the written scheme assumed, which is what a competent person or HSE inspector will ask to see alongside the scheme itself.
ASME Boiler and Pressure Vessel Code, Section VI
Most US jurisdictions adopt the ASME code's recommended rules for care and operation of power boilers, including water treatment guidance, through state or provincial boiler law.
A jurisdictional boiler inspector or the insurance carrier's inspector will use this log to check that water treatment and blowdown practice actually tracked the code's recommendations between certificate renewals.
Pressure Equipment Directive 2014/68/EU and national in-service inspection law
The PED governs how the boiler was manufactured and placed on the market; it does not govern how it is operated day to day.
In-service obligations sit in national implementing legislation, and this log is the operational evidence that feeds the periodic in-service inspection those national rules require, not a PED conformity document itself.
How to complete it
How to complete a boiler operation record, step by step
The fields are simple to fill in. What decides whether the record holds up is how the attendant and reviewer handle the judgement calls the form cannot make for them.
TDS or alkalinity one increment outside range can be normal noise on one shift and a leading indicator over three. The record needs a stated rule for how many consecutive marginal readings trigger a work order, or the escalation depends entirely on which attendant is on shift.
Blowdown intervals are usually set by TDS trend or a fixed schedule. If the attendant cannot point to which rule made this shift 'not due', the answer is a guess dressed up as a compliant selection.
A contaminated return can carry process chemicals or oil into the boiler feed. 'Not checked' and 'clean' both score as fine on some templates; here they do not, and a reviewer should treat 'not checked' as an open question, not a benign gap.
'Worse versus baseline' with 'efficiency loss investigated' left blank is a record that noticed a problem and did nothing about it. The two fields are meant to be read together, and a reviewer should never accept one without the other.
What auditors find
Most common boiler operation record findings
These are the patterns that actually show up when this log is audited months into use, not theoretical failure modes.
| Finding | Clause | What fixes it |
|---|---|---|
| Blowdown shows 'Not due' for several consecutive shifts while TDS drifts upward | ISO 55001 cl.8.1 | Set an explicit blowdown interval rule tied to the TDS trend, and require a reason code whenever 'Not due' is selected three shifts running. |
| Water level and burner cycling are answered but flue gas temperature is left blank most shifts | ISO 55001 cl.8.1 | Make flue gas temperature required at least once per shift; it is the field most likely to catch fouling before efficiency loss becomes visible elsewhere. |
| Condensate contamination checks are marked 'Not checked' rather than tested | ISO 55001 cl.8.1 | Escalate 'Not checked' the same way as 'contaminated' until a test is actually recorded, rather than treating it as a neutral answer. |
| Efficiency loss investigated is left blank when versus baseline shows 'Worse' | ISO 55001 cl.8.1 | Make the investigation field conditionally required whenever baseline comparison is worse, closing the gap between noticing and acting. |
| Action Required is answered 'No' while a significant alarm was logged earlier in the same entry | ISO 55001 cl.8.1 | Add a validation that a significant alarm answer forces Action Required to 'Yes' unless a supervisor overrides it with a reason. |
| Completeness percentage is high but several scored fields carry no answer | ISO 55001 cl.8.1 | Recalculate completeness against required-and-scored fields specifically, not just against all fields, so a technically complete entry cannot hide unanswered chemistry readings. |
Case in point
Case in point: a softener breakthrough nobody escalated
Feed water hardness had been creeping up for six shifts, each entry landing just inside range on its own. No single reading triggered a work order, because no rule said three marginal readings in a row should. By the time hardness was clearly out of range, scale had already started forming on the tube surfaces closest to the burner.
The fix was not a new field. It was a rule: three consecutive marginal readings on any scored water treatment parameter automatically raises Action Required to 'Yes', regardless of what any single shift entry says on its own.
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-071
- Archetype
- Record
- Record ID
- BOP-2026-000
- Scoring
- Parameters in range
- Direction
- High is good
- Singleton
- Yes
- Basis
- ISO 55001 cl.8.1
- Links
- Links Steam check, Energy log
- Tags
- Utilities, Steam
- Sections
- 5
- Fields
- 49
- Follow up fields
- 3
- Repeating sections
- 1
- Links out
- 3
Header
12 fieldsLog ID*
Auto sequence. Format BOP-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
Water Treatment Is The Whole Job
Boilers rarely fail because of the burner. They fail because the water was wrong for months and nobody read the log until the tubes went.
Shift*
Attendant*
Steam Demand
Operating parameters
Repeats9 fieldsTime*
Steam Pressure*
Steam Flow
Feed Water Temperature
Flue Gas Temperature
Rising flue temperature at constant load means fouling. It is the earliest efficiency signal you get.
Oxygen Or Combustion Reading
Water Level Normal*
- Yes3 pts
- Low0 pts
- High1 pt
Burner Cycling Normally*
- Yes3 pts
- Short cycling1 pt
- Faulty0 pts
Any Alarm*
- None3 pts
- Minor1 pt
- Significant0 pts
Water treatment
9 fieldsTotal Dissolved Solids*
Alkalinity
Phosphate Or Treatment Reserve
Feed Water Hardness
Any hardness reaching the boiler means the softener has broken through.
Condensate Return Percent
Condensate Contamination Checked*
- Yes, clean3 pts
- Yes, contaminated0 pts
- Not checked0 pts
Blowdown Carried Out*
- Yes3 pts
- Not due3 pts
- No0 pts
Blowdown Volume
All Parameters In Range*
- Yes3 pts
- Some marginal1 pt
- No0 pts
Efficiency
6 fieldsFuel Consumed
Steam To Fuel Ratio
Versus Baseline*
- Better3 pts
- Same2 pts
- Worse0 pts
Efficiency Loss Investigated
- Yes3 pts
- No loss3 pts
- No0 pts
Feeds Energy Review*
Work Order Raised*
- Yes3 pts
- Not needed3 pts
- No0 pts
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
Attendant*
Signature*
Engineering*
Second Signature*
MNT-071 · record IDs look like BOP-2026-000 · Links Steam check, Energy log
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The form is the easy part. Keeping the ranges current, escalating a drifting trend before it becomes a failure, and holding the evidence together across shifts is the work that actually slips.
Holds the boiler operation record against the asset register, tracks the TDS and flue gas trend across shifts, and flags when a marginal reading has repeated long enough to need escalation.
Keeps the written scheme of examination and this operating log visible together, so a competent person or inspector visit can be answered from one place rather than two systems.
Tracks blowdown volume and condensate discharge against site consent limits, catching a creeping blowdown frequency before it becomes a permit issue.
Rolls shift completion and exceptions into one view across the boiler house, and holds every escalation for your approval before it touches a live record.
This template lives in KnowMaintain — asset maintenance. Work orders, planned maintenance, calibration, reliability and shutdowns.
Meet KnowMaintain→Glossary
Boiler Operation Record definitions and key terms
- TDS (total dissolved solids)
- A measure of dissolved mineral content in the boiler water. Rising TDS at a stable blowdown rate is the earliest sign that the treatment programme is falling behind.
- Blowdown
- Deliberately discharging a portion of boiler water to remove concentrated dissolved solids and sludge, keeping TDS within the operating envelope.
- Condensate return
- Steam that has given up its heat and returned to the boiler feed system as water. Contaminated condensate carries process chemicals or oil back into the boiler.
- Alkalinity
- A measure of the water's ability to neutralise acid, controlled to protect boiler metal from corrosion while avoiding the caustic conditions that cause embrittlement.
- Phosphate or treatment reserve
- The residual level of chemical treatment remaining in the boiler water, confirming the dosing programme is still active rather than exhausted.
FAQ
Frequently asked questions about boiler operation record
Who fills in the boiler operation record?+
The attendant on shift, at the boiler, each round. It is not intended to be reconstructed at the end of a shift from memory.
How often should entries be made?+
Each round of every shift, day, afternoon and night. The operating parameters section is built to repeat for exactly that reason.
Does a clean water level and burner reading mean the shift passed?+
No. The result depends on the water treatment chemistry and efficiency sections as well; a good burner reading sitting next to an unescalated marginal TDS is not a pass.
What happens when Action Required is marked 'Yes'?+
A CAPA reference and action owner become required fields, tying the shift entry to a specific corrective action rather than leaving the issue implicit in a low score.
Why does the record require two signatures?+
The attendant signs off the shift entry itself; engineering countersigns to confirm the operating conditions and any escalation were reviewed independently.
Can this template be adjusted for a specific boiler plant?+
Yes. Every field, range and score is editable, and most sites install it as shipped, run it for a full treatment cycle, then tighten the ranges against their own baseline.
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
Verifies refrigeration contractor certification, ammonia competence, emergency capability and out of hours response
Environmental Aspects Register
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
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
More in Utilities
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
Emergency Generator Test Record
Records the periodic run and load test of standby generation, with fuel, coolant and transfer performance
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 cl.8.1 — Operational planning and control
- Pressure Systems Safety Regulations 2000 (UK)
- ASME Boiler and Pressure Vessel Code, Section VI
- Pressure Equipment Directive 2014/68/EU
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.