Pressurized Water Reactor Project. Technical progress report for the period January 26, 1975--July 25, 1975

Technical Report · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4134788

Shippingport PWR Core 2, Seed 2 has remained shutdown since February 4, 1974, following a failure of the main unit turbine generator. Defueling of PWR-2 continued with head area component disassembly, main omega seal weld cutting, and removal of the reactor vessel head. Plant conditions are being maintained to support the defueling operation. The 1A, 1C, and 1D loops are isolated from the reactor vessel and in a dry layup condition. The 1B loop is open to the reactor vessel. The 1B loop, reactor vessel, and pressurizer are in a partially drained condition. A nitrogen atmosphere is being maintained in the 1B loop. The reactor vessel water level is being maintained within a narrow control band. Routine periodic preventative maintenance work is in progress. The 1A Reactor Coolant Pump was removed, sent off-site for refurbishment, and reinstalled. The 1A heat exchanger was removed and a spare unit placed into its position. Work has begun to remove the 1D heat exchanger for replacement with another spare unit. (auth)

• Research Organization: Bettis Atomic Power Lab., West Mifflin, Pa. (USA)
• NSA Number: NSA-33-008685
• OSTI ID: 4134788
• Report Number(s): WARD-MRP--144
• Country of Publication: United States
• Language: English

Related Subjects

*SHIPPINGPORT REACTOR-- REACTOR OPERATION
210200* --Nuclear Power Plants--Power Reactors
Non- Breeding
Light-Water Moderated
Non-Boiling Water Cooled
HEAT EXCHANGERS
N77200* --Reactors--Power Reactors
Non-breeding
Light- water Moderated
Non-boiling Water-cooled
PRIMARY COOLANT CIRCUITS
PUMPS
REACTOR FUELING
REACTOR MAINTENANCE
REPAIR