Ship Emergency Power, UPS & Blackout Endurance Tool

Ship Universe Emergency Power Tool

Ship Emergency Power, UPS & Blackout Endurance Tool

Model the full blackout chain instead of only generator capacity. Compare UPS ride-through against generator start and bus transfer time, visualize emergency-generation margin, test largest-unit loss, identify the first loads that must be shed, and estimate fuel endurance under normal and degraded emergency modes.

Emergency Load

Enter the electrical services expected on the emergency bus after blackout recovery.

Emergency lighting & navigation

Communications & control

Emergency pumps & auxiliaries

Safety, fire & damage control

Mission / critical hotel load

Other / sheddable emergency load

Overall coincidence

Future growth / design margin

Essential share of design load

Mission share of design load

Emergency Generator Plant

Installed emergency generators

units

Generators available / online

units

Rated capacity per generator

Available capacity after derating

Preferred maximum loading

Required reserve above design load

Generator specific fuel consumption

kg/kWh

UPS Blackout Bridge

This section checks whether protected loads survive until emergency generation is stable and the emergency bus is restored.

UPS-protected load

Nominal UPS / battery energy

kWh

Usable energy fraction

Discharge / inverter efficiency

Generator start & stabilization

seconds

Bus transfer & load sequencing

seconds

UPS bridge reserve

Emergency Fuel & Endurance

Usable emergency fuel volume

Fuel density

kg/L

Target emergency endurance

hours

Individual Emergency Loads

Assign each load a demand factor, restoration priority and UPS protection state.

Emergency Load	Connected kW	Demand %	Priority	UPS

Emergency Generator Units

Model differing generator sizes, derating and SFC. Available but not online units are treated as standby.

Generator	Rated kW	Available %	SFC kg/kWh	Available	Online

Design Criteria

Future growth / design margin

Preferred maximum generator loading

Required reserve above design load

UPS Blackout Bridge

Nominal UPS / battery energy

kWh

Usable energy fraction

Discharge / inverter efficiency

Generator start & stabilization

seconds

Bus transfer & load sequencing

seconds

UPS bridge reserve

Emergency Fuel & Endurance

Usable emergency fuel volume

Fuel density

kg/L

Target emergency endurance

hours

Enter emergency loads, generator, UPS and fuel assumptions to build the blackout-recovery and endurance dashboard.

Emergency Power Decision N/A

Design Load N/A

Gen Margin N/A

UPS Margin N/A

Fuel Endurance N/A

Blackout Recovery Timeline UPS must bridge protected loads until emergency-bus restoration

0 sec Blackout

0 sec Generator ready

0 sec Emergency bus restored

0 sec UPS endurance

Protected Load N/A

Required Bridge incl. Reserve N/A

Actual UPS Bridge N/A

Bridge Margin N/A

Emergency Generation Capacity Stack Design load, reserve target and largest-unit-loss screen

N/A
Online capacity N/A
Standby capacity N/A
Design load N/A
Reserve target N/A
Post-loss capacity

Current Generator Loading N/A

Reserve Margin N/A

N+1 Margin N/A

Largest Online Unit N/A

Load-Shedding Ladder After Largest Generator Loss Theoretical priority sequence for planning only

Emergency Fuel Endurance Design-load endurance, target and essential-only endurance

N/A
Design-load endurance N/A
Target N/A
Essential-only endurance

Emergency Fuel Inventory N/A

Fuel Burn at Design Load N/A

Fuel Required for Target N/A

Endurance Margin N/A

Casualty Scenario Matrix Fast screen of weak links in the emergency-power chain

Model approach: design emergency load equals coincident load plus future growth. Generator available capacity equals rated kW multiplied by availability. N+1 removes the largest online unit. UPS usable AC energy equals nominal battery energy multiplied by usable fraction and discharge efficiency. Required bridge time equals start/stabilization plus bus transfer/sequencing, increased by the entered UPS reserve. Fuel endurance uses a capacity-weighted average SFC and constant electrical load for each modeled condition.

Engineering planning estimate only. This tool is not an approved emergency-power load analysis, blackout recovery study, selective-coordination study, generator transient analysis, UPS design or statutory compliance assessment. Actual performance depends on starting currents, motor sequencing, voltage and frequency recovery, breaker coordination, generator control, battery condition, inverter limits, fuel-system arrangement, control logic and vessel-specific emergency-service requirements. The load-shedding sequence is a planning screen, not an operating procedure. Validate final generator sizing, UPS autonomy, emergency fuel endurance, recovery sequence and required emergency services against vessel-specific engineering, class, flag and statutory requirements.

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