ML20086B182

Ro:Following Normal Primary & Secondary Plant Startup, Radiation Monitor R-19 (Steam Generator Blowdown) Alarmed in Control Room.Investigation Confirmed Primary to Secondary Leak in Steam Generator a of Approx 1 Gallon/Hr

ML20086B182
Person / Time
Site:	Robinson
Issue date:	11/04/1971
From:	Utley E CAROLINA POWER & LIGHT CO.
To:	Morris P US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20086B171	List: ML20086B169 ML20086B182
References
NUDOCS 8311170092
Download: ML20086B182 (1)

Text

3 O

' ~

O So.y, 1

Carolina Power & Light Company Raleigh, North Carolina 27602 November 4, 1971 d c) .

s

< r1 ~ \

g JU i$ d Nova as,angggg7; g ,I2' Dr. Peter A. Morris -

Division of Reactor Licensing 88Weems U. S. Atomic Energy Commission ag g /

Washington, D. C. 20545 H. B. ROBINSON STEAM ELECTRIC PLANT LICENSE DPR-23 "A" STEAM GENERATOR PRIMARY TO SECONDARY LEAK

Dear Dr. Morris:

Following a normal primary and secondary plant startup af ter a weekend outage, Radiation Monitor R-19 (St eam Generator Blowdown) alarmed in the Control Room. Subsequent investigation confirmed a primary to secondary leak in "A" Steam Generator of approximately 1 gallon / hour. Analysis indicates gross iodine activity in the secondary system to be approximately 2.32 x 10 -5 uc/cc.

Continuous steam generator blowdown has been curtailed and any further blowdown will be monitored and controlled by a release permit.

In our opinion, the plant may be operated indefinitely in this condition without posing any hazards to plant safety or the general public. To date, there are no indications of failed fuel in the H. B. Robinson reactor.

NBB:dds Yours very truly,

' , ' ;^[ [ [.'

/ --

~

cc: Mr. G. P. Beatty f, Mr. N. B. Bessac Mr. C. D. 15arham E. E. Utley j g Generation & System Operations a

j h g 8311170092 701216 PDR ADOCK 05000261 0Q S PDR COPY SENT REGION

.