ML20066F519
| ML20066F519 | |
| Person / Time | |
|---|---|
| Site: | U.S. Geological Survey |
| Issue date: | 01/17/1991 |
| From: | INTERIOR, DEPT. OF, GEOLOGICAL SURVEY |
| To: | |
| Shared Package | |
| ML20066F518 | List: |
| References | |
| NUDOCS 9101240023 | |
| Download: ML20066F519 (2) | |
Text
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _
1/91
.g d.
Ventilation syt. tem interlocks are operable, e.
The safety channels indicate the actual pouer level at; determined by a thermal power mear,utement.
13.
On each day that pulse mode operation of the reactor is planned, a functlonal performance check of the transient (pulce) rod system shall be performed.
Semi-annually, at intervals not to exceed eight months, the transient (pulse) rod drive cylinder and the associated air supply system shall be inspected, cleaned and lubricated as necessary.
EftjatJoj 11onitorina dg I'.
1.
The radiation levele within the reactor laboratory shall be monitored by at least one area radiation monitor during reactor operation or when work is done on or around the reactor core or experimental f acilities. The monitor shall have a readout and provide a signal which actuater; an audible alarm. During short periods of repair to this monitor, reactor operations may continue while a portable gamma-sensitive ion chamber is utilized as a temporary substitute.
2.
A continuous air monitor uith readout and audible alarm shall be operable in the reactor room when the reactor is operating.
3.
The alarm set points for the above radiation monitoring instrumentation shall be verified at least once a uceh. T hit; instrumentation shall be calibrated at least once a year.
G.
I'uel Sternae 1.
All fuel elements or f ueled devices shall be rigidly supported during stoiage in a safe geometry (ken less than 0.8 under all conditions of moderation).
9101240023 910117 PDR ADOCK 03000274 P
PDR l
1H1 UtELE_.]
inh 11tulLJ S AcTon DAtrTY SYS11111E O riginating llode in which ef fective C h,011n o).
EtijTlTd Ss l'u]De SW
- 1. Safety Channel 1 1101 of f ull power X
X
- 2. Safety Channel 2 110'i, of f ull power X
X
- 3. Scram button llanual push X
X X
- 4. I'reret timer Leen than or equal X
to Ib t.econds L. CSC untchdog timer Lost of ref rech signal X
X X
- 6. DAC welchdog timer Loss of ref rech tignal X
X X
T3BLU 11 111 Nil 1Uli INT 0kLO_f. fig 11 ode in which ef fective Antlon treventui SS Pulse UW 1.
Control rod withdrbual with neutron X
level less than 10 7't power on the digital power channel.
2.
Simultaneoun manual withdrawal of X
tuo control rode, including the pulse rod.
3.
Simultaneous manurd withdraual of X
tuo control rodo excluding the pulse rod.
4.
Initiation of pulse above 1 kW.
X 5.
Application of hir preneure to pulse X
rod drive mechanism unlet.s cylinder is f ully incerted.
6.
Withdrawal of any control rod except X
pulce rod.
.