MINIATURE BOILER TEST--NAK INJECTION (NO. 1). Memo Report 124

Technical Report · Wed Jan 16 04:00:00 EST 1957

OSTI ID:4273506

Milich, W; Kennedy, G E; Schultz, E A; King, E C

A test was run to determine the effect of a leak of third fluid NaK into an area of a simulated water side nozzle where temperature measurements have indicated that steam is present. This simulated nozzle was built of type 347 stainless steel. Approximately 1 lb of NaK was injected with nitrogen pressure 600 psig over a period of 11 min through a prepared leak. Within a minute after the NaK injection started, thermocouples located on the outer surface of the boiler in the immediate area of the injection went from 925 deg F to beyond the 1200 deg F scale of the instrument. The boiler was operated for ~20 hr after the NaK was injected without any indication of a failure, after which the unit was secured, allowed to cool, and the insulation removed. A pressure test of 125 psig revealed several cracks in the shell (water side), and evidence of NaK was also found in the insulation indicating that leaks occurred during the NaK injection. (auth)

• Research Organization: Mine Safety Appliances Co., Callery, Penna.
• NSA Number: NSA-13-011859
• OSTI ID: 4273506
• Report Number(s): NP-7430
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
COOLING
CRACKS
HIGH TEMPERATURE
INJECTION
LEAKS
LIQUID METALS
MATERIALS TESTING
METALLURGY AND CERAMICS
NITROGEN
NOZZLES
OPERATION
POTASSIUM ALLOYS
PRESSURE
SODIUM ALLOYS
STAINLESS STEEL-347
STAINLESS STEELS
STEAM
SURFACES
THERMOCOUPLES
VESSELS
WATER