*
,
2.0
F u e l System ( continued)
3 2.5 The maximum s a l t f i l l r a t e w h i l e f i l l i n g t h e core i s 1.0 f t /min. 2.6
The m a x i m u m amount of 235U 120 g.
which w i l l be added a t one time i s
During ctperation f u e l w i l l only be added through t h e
sampler e n r i c h e r
.
2.7 The maximum c o n c e n t r a t i o n of f i s s i o n a b l e m a t e r i a l i n t h e f u e l s a l t w i l l not exceed by more t h a n 5% t h e minimum r e q u i r e d f o r full-power o p e r a t i o n a t 1200째F w i t h e q u i l i b r i u m xenon and t h e c o n t r o l rods poi.soning
0.6% Sk/k.
The f u e l s a l t w i l l be sampled
and t h e c o n c e n t r a t i o n measured a t l e a s t once p e r week.
R
2.8 A t no time during c r i t i c a l o p e r a t i o n of t h e r e a c t o r w i l l t h e r e a c t i v i t y anomaly be allowed t o exceed 0.5% Jk/k.
A "reactivity
anomaly" i s d e f i n e d as a d e v i a t i o n from t h e r e a c t i v i t y which i s expected on t h e b a s i s of measured r e a c t o r p h y s i c s c o n s t a n t s and c a l c u l a t e d e f f e c t s o f burnup and f i s s i o n product accumulation. R
2.9
A p o s i t i v e p e r i o d of 1 s e c o r l e s s w i l l cause a s a f e t y - r o d scram.
7.0 Coolant System
3.1 The maxinum coolant system cover-gas p r e s s u r e i s 50 p s i g . 4.0
Control Rods
4.1
The normal compI.ement o f c o n t r o l r o d s i s t h r e e , of which two a r e r e q u i r e d t o scram f o r s a f e t y a c t i o n .
4.2
The maximum scrim time ( t i m e from i n i t i a t i o n of s i g n a l u n t i l a r o d i s on t h e s e a t ) i s 1.3 sec.
4.3
The r o d speed (motor powered) i s 0.5
+-
0.05 in./sec.
This speed p e r m i t s m a x i m u m r e a c t i v i t y a d d i t i o n s i n " s t a r t " of
0.1% 6k/k p e r s e c and i n "run" of 0.05% Ak/k p e r sec. R
4.4
The scram time of t h e rods w i l l be checked b e f o r e each f i l l x i t h fuel salt.