ML19326C777
| ML19326C777 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/29/1974 |
| From: | Ziemann D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Phillips J ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8004280711 | |
| Download: ML19326C777 (2) | |
Text
.
-g s
' "*g.,
UNITED STATES
). ---;. f, ATOMIC ENERGY COMMISSION 3(
8, wAsamcTon. o.c. zos4s
%,, o '
October 29, 1974 Docket No. 50-313 Arkansas Power & Light Company ATIN:
Mr. D. Phillips Senior Vice President Production, Transmission, and Engineerinu THIS DOCUMENT CONTAINS Sixth and Pine Streets
.P00R QUALITY PAGES Pine Bluff, Arkansas 71601 Centlemen:
The purpose of this letter is to inform you of a defect in the Reactor Building Spray Systcu at Three !!ile Island Unit 1 which resulted in a violation of their Technical Specifications.
During recirculation of fluid in the sodium hydroxide storage tank, sodium hydroxide solution entered the sodium thiosulfate storage tank reducing the sodium thiosulfate concentration to a value below the Technical Specification limit.
The dilution occurred as a result of Icakage thru a normally closed valve in the inlet line to the sodiua thiosulfalc tank.
Please review your design and operating procedures to determine whether any changes are necessary at Arkansas Nuclear One - Unit 1 to reduce the probability of such an occurrence, and inform us within 30 days of the date of this letter of your conclusions and any proposed changes to your Technical Specifications.
To assure that such a condition does not go undetected at Arkarisas Nuclear One - Unit 1 we request that in addition to the current Technical Specification surveillance requirements both the sodium hydroxide and sodium thiosulfate storage tanks be sampled after makeup or recirculation of either tank until this possible problem has been investigated and resolved.
Sincerely, JQ vi,w - ~
%.. 8....
Dennis L.'Ziemann, Chief Operating. Reactors Branch #2 Directorate of Licensing 8004280 7//
.2
-g)
~s
~
Arkansas Power & Light Company October 29, 1974 cc:
Horace Jewell Horace, Holms & Jewell
-1550 Tower Building Little' Rock, Arkansas 72201 Mr. William Cavanaugh, III Production Department Post Office Boy. 551 Little Rock, Arkansas 72203 Arkansas Polytechnic College Russellville, Arkansas 72801 SO O'
_s e
~@
s
_