Effects of morpholine and boric acid implementation on secondary chemistry and corrosion product transport

Technical Report · Wed Jul 01 00:00:00 EDT 1992

OSTI ID:10177369

Siegwarth, D P; Pearl, W L; Sawochka, S G; Clouse, M E ^[1]

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1. NWT Corp., San Jose, CA (United States)

This project expanded the database on the effects of morpholine use as a pH control additive in the secondary water system of pressurized water reactors. Tests carried out at Alabama Power`s Joseph M. Farley Units 1 and 2, Northern States Power`s Prairie Island Unit 2, and Commonwealth Edison`s Byron Unit 1 demonstrated that the use of morpholine reduced corrosion product transport in PWR secondary systems by up to a factor of 2. Further reductions were achieved by eliminating copper alloy tubing and increasing secondary cycles pH. Steam generator boric acid treatment in plants with all ferrous secondary cycles operated with morpholine was shown to have a minimal effect on iron transport.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); NWT Corp., San Jose, CA (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10177369
• Report Number(s): EPRI-TR-100791; ON: UN92040692
• Resource Relation: Other Information: PBD: Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
PWR TYPE REACTORS
SECONDARY COOLANT CIRCUITS
CORROSION
WATER CHEMISTRY
PH VALUE
CORROSION INHIBITORS
COPPER ALLOYS
MORPHOLINES
CORROSION PRODUCTS
WATER QUALITY
EROSION
STEAM GENERATORS
PRAIRIE ISLAND-2 REACTOR
BYRON-1 REACTOR
FARLEY-1 REACTOR
FARLEY-2 REACTOR
IRON
STAINLESS STEELS
BORIC ACID
210200
360105
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED
CORROSION AND EROSION