Independent industrial maintenance reference
Industrial maintenance, without the marketing
Reliability, lubrication, shutdown planning, wear protection and corrosion control — with a mining focus. Every figure published here is backed by a public, linked and dated source: a standard, a manufacturer data sheet, or a calculation with stated assumptions.
Disciplines covered
- Reliability
- Lubrication
- Shutdown planning
- Wear protection
- Corrosion control
- Standards and specification
What this site is built on
No client project, no case study, no undisclosed commercial claim. Credibility rests on three things you can check yourself.
01
Standards, turned into decisions
Specification standards, preparation grades, test methods, recommended intervals. Not a paraphrase: what the text means when you have to decide.
02
Manufacturer data, decoded
Data sheets and equipment manuals read line by line. What the numbers mean, and what the document leaves out.
03
Calculations with stated assumptions
Every calculator shows its formula, its variables and its limits. Nothing leaves your browser.
Quick reference
Surface preparation equivalents
The equivalence engineers look up most often, and the one most often quoted from memory. SSPC and NACE published these as joint standards; ISO 8501-1 defines the Sa grades separately.
SSPC and NACE published these as joint standards; ISO 8501-1 defines the Sa grades. Full comparison
| SSPC | NACE | ISO 8501-1 |
|---|---|---|
| SSPC-SP 5White metal blast | NACE No. 1 | Sa 3 |
| SSPC-SP 10Near-white blast | NACE No. 2 | Sa 2½ |
| SSPC-SP 6Commercial blast | NACE No. 3 | Sa 2 |
| SSPC-SP 7Brush-off blast | NACE No. 4 | Sa 1 |
Where to start
5 / 8 hubs published
Each hub gathers a pillar page and the articles that go deeper on each sub-topic.
Standards & specification
ISO 12944, ISO 8501, AMPP and ASTM turned into decisions you can write into a spec.
6 articles
Wear protection & repair
Abrasion, erosion, cavitation. Selecting and applying repair and protection systems.
3 articles
Corrosion protection
Corrosivity categories, coating systems, corrosion under insulation, galvanic couples.
4 articles
Mining maintenance
Mills, conveyors, slurry pumps, chutes, cyclones, thickeners — where wear and corrosion meet.
3 articles
Tools & calculators
Coverage, downtime cost, regreasing intervals. Formula and limits always shown.
5 calculators
Product comparison
Multi-brand comparisons from published data sheets only, with method stated up front.
Planned
Lubrication
Interval calculation, automatic systems sizing, grease selection and compatibility.
Planned
Reliability & shutdowns
Shutdown planning, inspection windows, scoping coating work inside a turnaround.
Planned
Featured tool
Put a number on the downtime you are trying to avoid
A preventive maintenance budget argues badly on intuition, and loses to a production budget almost every time — because the cost of the failure avoided stays abstract until someone puts a number on it.
- Lost margin, idle labour, penalties and restart costs
- The preventive budget that cost actually justifies
- Shareable link, printable sheet, nothing sent to a server
Example output
Total cost
48 600
Cost per hour
6 075
Lost margin
40 000
Idle labour
3 600
10 units/h · 500 margin · 6 people · 8 h outage
Recently published
RSScorrosion
Anti corrosion coating types: choosing by exposure zone
You do not select a product, you select a corrosivity category and a durability class — the product follows. ISO 12944-2 fixes the category from C1 to CX, ISO 12944-1 fixes how long the system has to last, and only then does the family matter: zinc-rich primer, epoxy, polyurethane, polysiloxane or metallic.
standards
NACE MR0175 vs MR0103: Material Requirements
NACE MR0175 applies strictly to upstream oil and gas production (extraction), while NACE MR0103 applies to downstream refining operations. You cannot simply substitute one for the other, as the environmental conditions (chlorides, pH, temperature) vary drastically between the two sectors.
corrosion
Galvanic corrosion in mixed-metal assemblies
Galvanic corrosion needs three things at once: two different metals, electrical contact, and an electrolyte bridging both. Remove any one and it stops. The area ratio decides how bad it gets — a small anode on a large cathode fails fast, which is why a carbon steel bolt in a stainless flange is the wrong way round.
How this is written
Every article is reviewed and validated by a professional engineer with extensive field experience in industrial maintenance, protective coatings and corrosion control. Nothing is published without that review: facts checked against the source, engineering judgement added, unsourceable claims removed.
Product comparisons rely on publicly available manufacturer data only, and are written to stay useful to a reader who will never buy anything. Ownership and conflict-of-interest policy are set out in the editorial methodology.
Stuck on a specification?
Describe the equipment, the environment and the problem. You get an engineering answer — not a sales pitch, and not a quote you did not ask for.
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