rate. A typical example of tritium activity buildup in reactor water is shown in Figure 5–1. The tritium inventories in a typical PWR plant components are given in Table 5–1.

Table 5–1

TRITIUM INVENTORIES IN PLANT COMPONENTS IN A PWR (Ref. 2)

Component

Water Volume (g)

Tritium Concentration (μCi/g)

Tritium Inventory (Ci)

Reactor Coolant

1.17×108

0.416

48.7

CVCS Holdup Tank

9.5×107

0.315

33.3

Primary Water Storage Tank

2.84×108

0.194

55.0

Component Cooling System

1.1×107

0.240

2.6

Refueling Water Storage Tank

9.6×108

0.11

106.0

Spent Fuel Pit

2.26×109

0.09

204

Boric Acid Storage Tanks

7.56×106

0.184

1.4

Waste Holdup Tanks

1.09×107

0.132

1.4



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