ML19305D609

Corrected Page 2.1-45,Amend 13,to Restart Rept,Describing short-term Mods

ML19305D609
Person / Time
Site:	Three Mile Island
Issue date:	04/14/1980
From:	METROPOLITAN EDISON CO.
To:
Shared Package
ML19305D607	List: ML19305D606 ML19305D609
References
NUDOCS 8004150287
Download: ML19305D609 (1)

Text

a . .

f 2.1.2.7.3 Short Ters Modifications

( F(.'4 Increased range capabilities will be furnished for the Reactor Building Purge Exhaust, the Condenser Of f-Gas Exhaust, and the Main Steam Lines as a short ter: odification. This Short Ters Modification will consist of G.M. Tubes or ionization chambers affixed to each of the effluent release paths described in 2.1.2.1.1 (only one detection system will be provided for each OTSG). Recoce readout will be provided to areas, which are habitable during an accident. The Long Ter= Modification for the Auxiliary 5 Fuel Handling Building is projected to be com-pleted by 1 June 1980. If a Long Ters Modification is not available by start-up, a Short Ters Modification utilizing a G.M. tube or ionization chamber will be incorporated. All devices will have necessary shielding if background effects are considered excessive.

The installation of each monitor will include evaluation of the position of the conitor relativve to other potential radiation sources and shielding necessary to minimize the effect of sources other than sample lines on the response of the monitor.

The sensitivity will assure that release rates of:

5,600,000 Ci/sec from Auxiliary & Fuel Handling 31dg.

2,300,000 Ci/see from Reactor Building Purge.

1400 Ci/sec from Condenser Off-Gas based on maxi =um flow rates from each release path.

2500 Ci/sec from a single steam generator can be detected.

The range of these monitors is identical to the range capa-bility of the long term modification.

For each of the monitors described, the following applies:

Ltch will be powered from normal power with battery backup.

Established sensitivities will be correlated to solid source calibradon. Procedures defining calibration methods and frequency will be written to assure proper response of the -

instruments.

E=ergency procedures will be written to the use of radia-tion instrumentation in conjunction with flow information to determine release race. ,

E=ergency Plan i=plementing procedures describe the dis-semination of infor=ation obtained from the =enitors.

bc -

Procedures and evaluations will be available for NRC review prior to restart of Uni I or i October 1980, whichever occurs first.

8 004150M 2.1-45 A=. 13

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