ML20066F352

Proposed Tech Specs Changing Description of Section 3.3 Re Reactor Safety Sys & Removing Pool Water Level from List of Measuring Channels Required in Section 3.2

ML20066F352
Person / Time
Site:	University of Lowell
Issue date:	01/15/1991
From:	MASSACHUSETTS, UNIV. OF, LOWELL, MA (FORMERLY LOWELL
To:
Shared Package
ML20066F350	List: ML20066F348 ML20066F352
References
NUDOCS 9101230273
Download: ML20066F352 (2)

Text

. _ -_ _.

r 7 TECIINICAL SPECIFICATIONS -'

10; The total reactivity! of. 2.5% in Specification 10-places a reasonable: upper limit'_'on-the worth; of all. experiments which is compatible--_withithe allowable excess reactivity and-

- the-shutdown margin - and-isi consistent with the functional mission of' the' reactor.

3.2 REACTOR INSTRUMENTATION Applicability This specification appliesi o the instrumentation whichimust Lbe-t available and operable for. safe; operation of the reactor.

Objective; The objective is -to require ~ that sufficient information be available-to the operator to assure safe. operation of the reactor.

~

- Specification The reactor shall-not be-operated unless _ the-measuring channels-listed _in the -following table are operable:-

-Minimum Operating _ Mode Lin

' Measurin e Channel Rec uired '

Which Reauired.

Pool Wetor tevel 1

- -M1-m ode s --. l-1

~

Startup Count Rate

'l '

Allimodes- (during zreactor -

'startup)

Log N -(Period)-

1:

All modest.

Power Level (Linear N)

.2-

. All modes y

Reactor - Coolant Inlet IL Forced : convection l

Temperature Coolant Flo y Rate

-1 Forced = convection Reactor Pool Temperature 1

Natural convection TS-17

$$$b$bb0$$$23 PDR 4

4 4

y

l d;*

TECHNICAL SPECIFICATIONS 1

Bases i

- TheEncutron detectors. assure: that measurements. of the-reactor:

1 pool level are. adequately-displayed during reactor startup'. and low and.-high power operationi iThe temperature and flow-detectors give information to the f operatorH o prevent the t

exceeding of a Safety Limiti

-j 3.3. REACTOR SAFETY SYSTEM Applicability

.y

.This 1 specification applies to the reactor safety: system channels,.

1

)

Obiective j

To require the minimumi number of reactor safety. system-channels that must' be operable-in~ order to. assure safe operation -

I of the reactor.

Specification The reactorsshallL not-be operated: unless the reactor: safetynsystem.

channels ~ described in"the following. table are operable, i

l Reactor-Safety

'Miiiimum; Operating Mode System Component / Channel' Required ;

. Function L

. in Which Reauired Startup Count. Rate 1

- Prevent blade'.

Reactor? startup.

withdrawal-in: all ' modes-1 when.N count rate:s 2;cp~si Reactor Period-l~

' Automatic reactor: Allimodes

scram with.s 3 sec

_ period Control blade irihlbit 1115l sec; period-TS i y

y-.,,

-y-

~-.,i..sn 4.- --

..,-[,,

r n,--+e w