ML19221A307

Daily Rept for 790418 Re Radioactive Releases to Environ

ML19221A307
Person / Time
Site:	Crane
Issue date:	04/18/1979
From:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
References
NUDOCS 7905210244
Download: ML19221A307 (2)

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.-rGIGSITY ATTENTIO.1 itE0J PED MILY REPORT -FEGION I 'I F.;0R;TV ATIEliTION RQUIP.E3

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4-18-79

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Fa c li i ty Notification 1teu or bent Reaianal Acr.,ior.

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t Dje ra tions Salea (init s Telephone fror About 2 p.m. on 4/17 Station her Transfon ec 21 Normal followup.

i and 2 Pesident

>l1s Ios, a.usir., a loss of nomcl f eed to vital (D'i60-272/311)

I nspec tor, 4/18 pcc.ser bisses which are nw being st:pplied by an alterna:e power sowce.

Gae vital bus uts lost on i

Uni t : krt was irrediately reenergized.

Uni t ]

l contintes to operate and is in ccmpliance vtitt its T.5. rc tuircrents.

T>e probica is stili under investiption, and a ground fault on the transformer is the ndicated cause at this tirne.

There is som non-vitil loss of lighting and power at the site, includirg the resident inspector's office and teTephore answering recorder, ih ree f-iil e Cons tant telehone Nuclear Incident Resulting in Radioactive PN0 79-67, 67A thru X l

isfari Unit 2 contact with Reicases to the Environment.

and IE Bulletins 79-05, (Dli50-32J) licensee ard GC 79-05A,79-06A, 79-066, personnel at Se 79-07 and 79-08.

An teC site since 3A8 team made up of individuals frca Headquarters and Regional Offices is onsite.

,ti ne Yankee Telephone to Seismic Event - An earthquake registering t.etereen Folicwp per FC 2515.

(Dl150-300) licensee,4/1?

3.6 to 4.1 on the RicF.ter scale occurred a t. 9:36 anc 4/la p. ra. on 4/17, centered near Brur,swick, I'.aine (20-25 criles frma site). The earthquake was felt by oper-ators ir the c.ontrol room but not by personnel with-in the contair.nent, which is built on bed rock.

The ins talled Seismic Event Recorders did not initiate,

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irxiical.ing that the earthquake severity was belw tneir h

e activatian point.

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