Eco-Valves | Tank Drainage Loss Assessment

Operational Assumptions and Tank Data

Fill in your facility parameters to estimate annual drainage losses

Lead information

Full name *

Company *

Email *

Phone *

Position *

Country *

Facility and product

Facility type

Product type

Evaporation factor

Product price ($/liter)

Drains per month

Number of tanks in terminal

Tank and drainage geometry

Tank height (m)

Drain pipe diameter

Drain pipe length (m)?

Number of drain ports

Drainage operation profile

Average drainage time

Valve opening while draining?

Recognition time after hydrocarbon appears (min)?

Advanced operational assumptions

Oily water treatment cost ($/liter)?

Technician hourly cost ($/hour)

ⓘ All values are conservative estimates based on operational assumptions. Results are indicative and intended to support preliminary loss assessment discussions.

Estimated total yearly hidden cost

$24,850

per year · conservative estimate · per tank

⚠ Unaccounted operational losses

Product loss per cycle654 L

Monthly product loss2.6 m³

Yearly product loss31.4 m³

Yearly evaporation loss4.7 m³

Operator time per year96 hrs

Oily water treated / year38.4 m³

Manual Drainage Loss Breakdown

——

View detailed calculation breakdown

Per drainage cycle Dead-leg hydrocarbon volume: 410 L
Hydrocarbon loss due to recognition delay: 244 L
Total hydrocarbon loss per cycle: 654 L
Evaporation factor (Gasoline): 10% — estimated evaporation loss per cycle: 98 L
Product value per cycle: $491 • Evaporation value loss: $74
Technician time: 2 hours • cost: $70
Oily water to treatment: 0.8 m³ • cost: $48
Monthly estimate Drainage cycles per month: 4
Monthly hydrocarbon loss: 2.6 m³ • evaporation: 0.39 m³
Monthly product value loss: $1,964 • evaporation: $295
Monthly technician cost: $280 • oily water: $192
Yearly estimate Drainage cycles per year: 48
Yearly hydrocarbon loss: 31.4 m³ • evaporation: 4.7 m³
Yearly product value loss: $23,568 • evaporation: $3,525
Yearly technician involvement: 96 hours • cost: $3,360
Yearly oily water treatment cost: $2,304
Total yearly hidden operational cost: $24,850

Cost Breakdown

Ready to eliminate these losses?

Eco-Valves automatic drainage systems eliminate manual intervention, reduce product loss by up to 95%, and provide full auditability of every drainage event.

Export assessment report

A professional PDF report will include an executive summary, detailed loss breakdown, operational assumptions, evaporation model, and refinery recovery adjustment where applicable.

Would you like an Eco-Valves specialist to follow up?

Our experts can analyze your specific data and propose a tailored solution.

Facility type
Product
Product price
Drains/month
Tank height
Pipe diameter
Pipe length
Drain ports
Drainage time
Valve opening
Recognition time
Oily water cost
Technician cost

How much product do you lose during manual tank drainage?

Operational Assumptions and Tank Data