ML19319A856

Provides Safety Evaluation of Instrumentation & Valve Arrangements

ML19319A856
Person / Time
Site:	Oconee
Issue date:	06/10/1967
From:	Danielle Sullivan US ATOMIC ENERGY COMMISSION (AEC)
To:	Long C US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 7912190986
Download: ML19319A856 (2)

Text

-

M 1 0 :$57 r>.C. Iang, Chiet heester Projects Branch #3, DEL TEE:

V. A. Meere, Chief Instrumentatiam & Power Ta*%=alogy Branch, DEL D. F. Sellivan lastrumentaties 4 Feuer Tach==legy Branch Division of Reacter Lisensing i

DOGET Bos.30-269, 270, Am 287:

OCOIEE UNITS 1, 2 Am 3 S&FETT ITALH& TION OF COM'ATinster ISGATION SYSTEMS i

i 1&FTS: DEL:DFS - IT - 47

\\

W The instrummataties and valve arra.agementa proposed for oconee Units 1, 2 and 3 (Esf. Table 5-3 and Fig. 7-2, PsA3) have been aselyzed and found to ceafers to the follouias criteria currently in use by the staff:

1.

Lines which penetrate contattunent and are open to the external atmosphere er ta systems designed for less than containment design pressure shall be protected by redundant, automatic

• isolaties valves if they fulfill any of the follouias conditieas:

a.

They are sommested to the primary systana.

b.

They are mesually open to containment stieser/aere.

c.

They are certain to be ruptured in the event of Ei.

Eaceptiesi Li.has which mast rammin open subsequent to EA shall be protected by redundant valves, one er both of which shall be remota-manual.

2.

Yeatilation 11 ass shall be isolated upon receipt of " Safety injee-ties" signals.

3.

Linee which have a les probebility of rupturr; during EA (e.g.,

certain -wary system lines) shall be protected 't,y at least one astematie valve enternal to eestaimeent.

Ezeepties:

Lines intiek meet remain open subsequent to EA shall be protected by see automatie velve er one remote-numani velve external to containment.

4.

Circuits which sentrol redundant automatie velves shall be redundant in the sense that no single failure shall preclude isolaties.

• Check valves are censidered to be automatic valves.

4912196Y8[

A

s

'd

C. G.Imag ect S. Levine

3. Grimme

. Distribution:

Suppl,<

,3 DAL Reading AD/RT Reading I&PTB Reading' Y. A. Moore D. F. Sullivan-l i

i 4-

.RL omer >

DEL

_.. p% i' '

Yc j

. ?

..a, i

sun =4:ss >..M351 A.iYan: re VAMoore onts >...#/AS/#7 -

6L.,137

~ ~ ~.-

c

-