RAPID-N

Damage Classification

Name

Flood Damage states for storage tanks

Hazard Type

Flood

Plant Unit Type

Storage Tank

Description

Damage states due to the hydrodynamic effects of the flood waters.

States

No	Code	Name	Description
1.	DS0	None	No damage.
2.	DS1	Floatation	Uplift and displacement of storage tanks due to buoyancy.
3.	DS2	Shell Buckling	Buckling leading to shell collapse due to an external pressure above the critical pressure.
4.	DS3	Sliding	Rigid sliding of unanchored tanks due to the hydrodynamic pressure of the flood surge.
5.	DS4	Debris Impact	Impact with waterborne debris and other floating objects (e.g. storage tanks).

References

Khakzad, N.; Van Gelder, P., "Fragility assessment of chemical storage tanks subject to floods", 2017

Access

Public

Created: Serkan GIRGIN, 2017/10/19 01:59:55 – Updated: Kyriaki GKOKTSI, 2023/05/03 09:29:09

Risk States

No	Damage State	Scenario Parameters	Validity Conditions
1.	DS1 (Floatation)	DS_Flood: Floatation	-	-
2.	DS1 (Floatation)	LOC State: Minor	-	-
3.	DS1 (Floatation)	LOC State: Moderate	-	10
4.	DS2 (Shell Buckling)	DS_Flood: Shell Buckling	-	-
5.	DS2 (Shell Buckling)	LOC State: Moderate	-	-
6.	DS2 (Shell Buckling)	LOC State: Moderate	-	10
7.	DS3 (Sliding)	DS_Flood: Sliding	-	-
8.	DS3 (Sliding)	LOC State: Moderate	-	10
9.	DS4 (Debris Impact)	DS_Flood: Debris Impact	-	-

Fragility Curves

No	Name		Parameter	Unit	Validity Conditions
1.	ST1 Flood Fragility Curve	ƒ(x)	-	-	v_water: 1 m/s; ρ: 870–950 kg/m³; Shape: Cylindrical Vertical; h: 10 m; d: 20.6 m; Base Support Type: Unanchored; Fill Percent: 35 %v		4	-
2.	ST4 Flood Fragility Curve	ƒ(x)	-	-	v_water: 1 m/s; ρ: 870–950 kg/m³; Shape: Cylindrical Vertical; h: 10 m; d: 16 m; Base Support Type: Unanchored; Fill Percent: 35 %v		4	-
3.	ST2,ST3 Flood Fragility Curve	ƒ(x)	-	-	v_water: 1 m/s; ρ: 710–770 kg/m³; Shape: Cylindrical Vertical; h: 10 m; d: 20.6 m; Base Support Type: Unanchored; Fill Percent: 35 %v		4	-

Risk Assessment

Natural Hazards

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Scientific

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