ML20037A923
| ML20037A923 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/18/1963 |
| From: | Lowenstein R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Joslin M COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8008080729 | |
| Download: ML20037A923 (1) | |
Text
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Iistribution F. A. Norris (2)
Soehet Ee. $>18 Doc. Pa.
Formal JAN 181963.
Suppl.
R&PESB - IUa Files Commonosalth Fdison CompmIF EGCase 71 $l leet Adame Street EIowenstein Chicago 90, Illinets OE Ittention Mr. Eurray Joslin REEryan Vice Presi/ent Centlanen It has recently com ts my attenties that a mixture of hydrogen and I
exygen ignited inside the contaiammet system of ese of tbs Coussission.
I eperated reactore and caused none asperficial blast sad fire da I atwriting this letter to describe the circustances of the incitlant so that you may review the deska of your facility for any potenti.nl danger points in the lit,ht of this arpertenes.
These were The hydrocar can was found to have evolved from two sources.
radiolytic de;wposition of the shield teter in which the reaeter le The situated end rvMalytte t'eeenpositism of the primary coolash unter.
hydrsges reae.hed the raper container atmosphere via eteleties from the free surface of the shield aster peal sat da leakage thread smise turing esmatamed packing tros the impor phase of the pressuriner. operation of the asetualated in a stagnant pocket in the apner regione of the sentaiemment An elastriaal,
system antil a combustible concentration was reached.
spark in this region er the hat surface of one of the eseqponente in ese-haetion with a chemical promter such as oz me, arist.ia, or ni peratice is believed to have ignited the nisture cassing a typ y,
rapid inercase in pressure.
In view of this incident, it is suggested that you review the design of your facility for may sunk sonroes of hydrogen er other eenbustible -
gaens which could reach locations withis your facility ubert stagnant pockets might form and asemen1ste to combastibio senserftratisse.
m;t Attentism should also be given to explosion-proofing electrieel devisee 4
or other equiprent which might otherwise be capable of,$gaittag such gases.
&lacerely yourag
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