ML19326B263
| ML19326B263 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/05/1976 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | Deyoung R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19326B243 | List: |
| References | |
| NUDOCS 8003120817 | |
| Download: ML19326B263 (3) | |
Text
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MAY 5 ht LEAD Serial 1973 R. C. DeYoung RESPONSIBILITY No.* IE-RID S_ubje t,t b
, Assistant 11 c
l.
APPAR1DIT Dir RIVER DELAMIN e tor for Ligh c
M nc,h NO. 3, DOCKET UNIT ATION f
OF t Water Re THE NO. 50-302 CONTAINMEN a tors, DPM Chief c
On April K, V. Seyfri DOME AT n
t CRYST u der the 17, 1976, ' th AL
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e to tr we r
an fer lo dequirementse licens aufficient s e, Florida P noted a e
a of 10 lo d re istanto the a
CFR v id o
50 55(e) thater Corpor tio s
in the done ow r.
con Addition l cr te ce, e
v lume in thetipon fu therthe dom ta tativ of n
a an a
o e infoeffort n, r anchor bolt wheported r
ha inv e had rm tions be l
1 failed ich a
en no under vicinity ofe tigation th s
Nine 4-in h w being av ilw y by the lican hor bolt.
to the c
a pr the e lic ovide v id diam tar o
3'-O done th ensee a
a c
is able.
appar ensee core 4
2 icknee tly thes hav with
.I n
At e be the follo i
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the dome ss.
result of emov d en r 1-1 outer de:na w ng surfacaaper the edla a dalaminatio e
ad 6' u/2 to 1-3/4 n
thes within thee indicate indic tesnin ticais pw and ard a
n alo inche indicatethe delmain s
ng moeidians fradially to a
about a delamin tedinche atio 18 the n is 3 s v cliE a
urfa ery little inches belowom the dom ome.
s r
s below the d
3 ce.
spa l
ce A
a At s
epar tion.
the ring a
of saw d about i
e a
girder interpodat abotit which verifiedcut out s No outer do e tio cr 4
me c
a king is urfa ection c
s s
Tite license 'the findings l' x 2' w appare t o n of ce and in ludesand additio e
n m de fr s
a as n
c co m de testing is bns ltant, G om the a
nal u
n ear the s
5 onic testing ilbe t cora boringsanchor The lic l
r eing Ass i
n Dec ens o
ember 10,1974ee has indica equipment, performed.o iate c
s when that Equipment at ted the site th on a large "e delamin tio aita boom" wa
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n m as heard witich ay hav g36V e occurr d e
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have J
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a MAY 5 1976 l
R. C. DeYoung.
j been the result of the fccmation of the separation. Investiga-tions at that tima revealed no signs of distress. Nearly two-l thirds of the dome tendons were stressed at that time.
i j
Based on the information available at this time, it would appear that the daim=fnation is similar to that which occurred at Turkay Point, Unit No. 3, and was reported on August 6, 1970.
i Rect==andations and Proposed Course of Action:
I 1.
The Office of Nuclear Rasctor Regulation will review and evaluate the information associated with this apparent delamination to determine its safety significance.
Consideration should include, but not be limited tot the original design and the ability of the structure as it now exists to perform the intended function; the additional damage that could result from certain repair programs; the protection of the strength elements from the environment over the plant life; and the instru-mentation and test program, currently in existance for the structure and the possible repairs which canLhs made if needed.
1 i
j 2.
At the conclusion of the review and evaluation, NRR will notify the Office of Inspection and Enforcement (IE) of the results of the study.
If, at tla conclusion of the review and evaluation, i
there is a need for additional information from, or new require-ments for the licensee, both the licensee and IE will be so advised by NRR.
3.
IE will provide additional information related to this subject as requested or as field information becomea available. taiditionally, IE will conduct inspections to confirm ths licensee's compliance with new requirements, if any are deemed uscessary as a result of the NRR review.
Concurrence 8
Origia.; 4 d he ggm S,
3 Boyce H. Grior, Director, Division of Reactor Inspection Programs, IE Date Urfsinal sleed by R. C. DeYounR R. C. DeYoung, Assistant Director for Light Water Reactors, DPM Date y--
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