ML20052H096
| ML20052H096 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/12/1982 |
| From: | Barrett L Office of Nuclear Reactor Regulation |
| To: | J. J. Barton GENERAL PUBLIC UTILITIES CORP. |
| Shared Package | |
| ML20052H097 | List: |
| References | |
| CON-NRC-TMI-82-030, CON-NRC-TMI-82-30 NUDOCS 8205190375 | |
| Download: ML20052H096 (2) | |
Text
'
DISTRIBUTION:
-r Tockat 50-776 NRC PDR Local PDR TERA TMIP0 HQ r/f TMI Site r/f flay lp 8~
LBarrett o
RBellamy AFasano Docket 50-320 6gc,B\\Ng 3
RConte e
b,V M k p o M Attorney, ELD IE S
ACRS pp lir. John J. Barton BSnyder Acting Dire.: tor. THI-2 GPU Nuclear Corporation s
RWeller P.O. Box 480 g
g liiddletown, PA 17057
Dear fir. Barton:
Subject:
Recovery Operations Plan Change No.12 (Reactor Coolant System Chemistry Specifications Change)
Reference:
Letter frca J. Barton to B. Snyder, same sebject, dated April 15, 1982, 4400-82-L-0054 We have reviewed the referenced letter which transmits your Recovery Operations Plan Change Request Number 14 for reactor coolant system (RCS) chemistry specifications. This change request deletes the dissolved oxygen and dissolved hydrogen specifications, and establishes a RCS chloride specification of 5 ppm in the Recovery Operations Plan (ROP).
The staff's evaluation of these changes, with the supporting information on RCS sulphur analysis and the metallurgical analysis on materials used in the submerged demineralizer system, has concluded that no significant increase in RCS system corrosion should occur, nor loss of system integrity. He therefore, approve your change request and are enclosing the amended sections (ROP Change No. 12) to the Plan.
This R0P change is required both for the timely processing of the reactor coolant system water through the submerged demineralizer system and the partial RCS drain down for the remote visual reactor examination through a control rod drive mechanism. We understand your staff is taking precautionary steps (i.e., prior flushing of SDS and reactor coolant bleed tanks) to insure that present RCS chloride concentration (approximately 0.8 ppm Cl) is not intentionally raised to the 5 ppm maxir:um limit and that processed makeup water (returned to the RCS via RCBT "A") will be inerted with nitrogen to insure dissolved oxygen is as low as practicable during processing. These are beneficial precautionary steps. Additionally, we suggest a contingency plan be considered to remove chlorides from the RCS or makeup water in the remote case where significant chlorides might leach from previously contaminated system components.
820519037f 9"
wmN{.....
- =
anc ronu ais no soi uncu ono OFFICIAL RECORD COPY
t s.
Mr. John J. Barton i The deletion of the RCS dissolved hydrogen (formerly maintained above 5 cc/Kg) as an oxygen scavenger is consistent with the dissolved oxygen change.
Currently the RCS dissolved H is 9 cc/Kg. While the staff is approving deletion of the dissolved H 2from the ROP, prior to actual RCS depressurization/ reactor vessel opening, the RCS dissolved H should, by procedure, be lowered to less then 5 cc/Kg to insure no comb $stible gas mixtures form.
Originalsaameg g W2. Bauveggf -
4 Lake H. Barrett Deputy Program Director TMI Program Office
Enclosures:
Page No. 4.4-1 and B 3/4 4-1 cc: See Service Distribution List rF
~~o.*
TH.P0 )
~ * - >......s.....S..R.se.j..y......
can )
5/../. /./. 82....... g. 5/.\\M... 82..........
. 5. //.7 /.8. 2.........
""C' OFFICIAL RECORD COPY
_ --