Table 3-3 Inspection and Test Frequencies

UFC 3-430-07

24 July 2003

including Change 1, Jan 2004 and Change 2, March 2005

\ Table 3-3 Inspection and Test Frequencies - UPVs (Special Cases)

Item

Internal Inspection

External Insp. &

Hydrostatic Test

Operational Test

MILSPEC

Every 3 years of

See note 2

Vessels

service. Inspection

must include test and

See note 1

calibration of safety

valves and pressure and

temperature gages.

See Note 1.

For MILSPEC Vessels (Pressure Vessels Design, Built and Stamped to MIL-F-

22606) or any non-ASME vessels see Note 3.

Hyperbaric

Every 3 years of

Every 6 years of service. If

Facility Support

service. Inspection

inspection shows no sign of

Pressure Vessels

must include test and

corrosion, the test may be

calibration of safety

verification that safety

deferred until the next

See note 4

valves and pressure

inspection, but must be

gauges. After repair or

gages are within

tested at least every 12

alteration.

calibration. After repair

years. After any repair or

or alteration.

alteration of the pressure

See Note 1

parts. Additional times at the

discretion of the inspector. In

accordance with Paragraph

5-4.3 and 5-4.5.

For MILSPEC Vessels (Pressure Vessels Design, Built and Stamped to MIL-F-

22606) or any non-ASME vessels see Note 3.

Carbon Dioxide

Only if the vessel has

Every 3 years; or after

After any repair or alteration

(CO2) Storage

been depressurized or

any repair or alteration

of pressure parts; or when

Tanks

has been opened to the of pressure parts; or

directed by an authorized

atmosphere other than

when directed by an

boiler inspector. Caution

See note 5

for immediate repair or

authorized boiler

should be taken in performing

maintenance; or when

inspector.

hydrostatic testing. It is

directed by an

essential that all water be

authorized boiler

See note 6

removed from the vessel

inspector.

before returning it to service.

Water will freeze and create

blockages.

Liquid Petroleum

Every 3 years or more

After any repair or alteration

Every 3 years or more

Gas (LPG)

frequently as

of pressure parts, otherwise

frequently as

Storage Tanks

determined by

at the discretion of the

determined by

procedures in the NBBI

inspector.

procedures in the NBBI

Code. After any repair

or alteration of pressure or alteration of pressure

parts. Use ultrasonic

parts. Bench test or

testing instead of visual

replace the UL or ASME

internal inspection.

safety valves every 6

years.

See note 7

Notes:

1.

A visual internal inspection for MILSPEC vessels or other hyperbaric support pressure vessels

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