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February 13. 1964 gfj(cs yp y,,y,' !
MMotAlem To : ACES Members Sir.ned Y'"
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Fron : M. C. Osake, Assistant to Emes. Secretary ACE 3
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! subjsets erstst carrr am bin WIta Poprr gekcteas i
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Attached is a memorsedum soneerains a regumet by DEL for additimaal data en the oestrol red stub tubes and adjetains houstage for the Oyster Creek and utme Mile Potat reactors, this informaties was requested La aceerdance with essestions by the Consf.ttee et the January 1M8 Acts meeting. Also attached is tafermetten whtah the oyster Creek and stagara Mohawk organisations have furnished La reply to the first two atens in the stL list. It is aettaipated that the inforestion in r-Japanse to the latter two items in the ptL list will be received La approminately one week.
Attachments:
I 1. DEL Memo dated Jan. 17, 1 %8 l 2. Oyster Creek Measurements of Internal Diameters of Cab Tubes:
Niagara Mohawk I.D. Measurements of Four Centrol Red Drive Houstate at Field Weld, dated 1/7/68 and 1/25/64, respectively.
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DEKOK91-202 PDR '
a ( ADVISORY COMMITTEE ON REACTOR SAFEGUARDS O UNITED STATES ATOMIC ENERGY COMMISSION WAlsHINGTON. D.C. Mle& February 15, 1968 MD'ORANDtM To : ACRS Mc:abers
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From : M. C. Caske, Assistant to Exec. Secretary
- ACRS i Subject OYSTER CREEK AND NINE MILE POINT REACTORS i
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! Attached is a memorandum concerning a request by DRL 'sr additional data on the control rod stub tubes and adjoining hous .gs for the Oyster Creek and Nine Mile Point reactors. This information was requested in accordance with suggestions by the Committee at the January 1968 ACRS meeting. Also attached is information which the Oyst:r Creek and Niagara Mohawk organizations have furnished in reply to the first two iters in the DRL list. It is anticipated that the information in response to the latter two items in the DRL list will be received in approxiraately one week.
Attachments: i
- 1. DRL Memo dated Jan. 17, 1968
- 2. Oyster Creek Measurements of Internal Diameters of CRD Tubes; f Niagara Mohawk I.D. Measurements of Four Control Rod Drive
'j Housings at Field Weld, dcted 2/7/68 and 1/25/68, respectively.
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UNITED STATES GOVERNMENT Y, Olll0 TON UM MM . l jfC 32 la 10 l To : 711cs t pgm JAN17 ,G68 (THRU) Roger S. Boyd, AD/RP, DRLN .
- nou : ' Robert L. Tedesco, Chief, RPB-2 hD Cffif'iAY CCMM.
N Division of Reactor Licensing . . , , (,.,',"g'[. f
' 8DJA OYSTER CREER AND NINE MILE PDINT STUB TU3ES - DOCKET NOS.' 50-219 1
4 on January 16, 1968 V. Sec11o and I contacted (telephone) Mr. Ritter of Jersey Central Power 6 Light Company and Mr. Ewart of Niagara
' Mohawk Power Corporation to request additional data on the control rod stub tubes and adjoined housings'or guide tubes. The request
' for the data was made in response to the concerns raised by the ACRS at its January 1968 meeting.
The following datt. were requested from both Niagara Mohawk and Jersey Central: l
- 1. For a representative sampic of the adjoined housings, including several from the outer rows, the following measurements should be taken and made availabic to us I
- An oxial traverse of the internal diameters I
in at 1 cast two plancs should be performed. ' Ideally, the traverse should be extended'to
- a length wherein it can be established that l-the inside diameter remains essentially constant, but should include measurements at intervals of about 1/2" for about 6" l above and below the field welds. We indicated that the adequacy of the 1/2" f
increments should be confimed by initial I screening censurements. Further, the two i planes of measurement should be for the t maxinum and minimum wave shapes. 1
- 2. Axial traverse of the outside dianctor of the' stub tubes (tubes associated with the housing in (1))
should also be performed. ' > *3. Analytical predictions of the defomation pattern measured in (1) above should be made availabic for our review. l l *4. A discussion and analysis of the correlation between the deformation ceasured in (1) and .(2) should be' l [,f provided. v, y *May be provided later than items 1 & 2.
' \ % II. C. %i et kndo Rorularis on the Porvroll Savinu Plan fy*?f?jff, ,
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o t Files (50-219 4 50-220) - 2- JAlil's avod Mr. Ritter cnd Mr. Ewart verc informed that the data requested above should be supplied on an informal basis. We informed JC and NMP that they should make every ef fort to obtain the data before irrevocabic changes verc made to the reactor vessel complex. Niagara Mohnwk was further requested to repeat the censurements af ter the-forthcoming hydro. I also indicated that this data was of intcrest to the Committee ant ,hould be available before we and the Committee i completed our reviews. Both JC and NMP agreed to provide the requested i data. The time period is of the order of a veck for ite:4 1 and 2 .
, and a few weeks later for 3 and 4.
t cci P. A. Morris R. S. Boyd S. Levine R. Engelken, CO ,
! J. O'Reilly , R. DcYoung ; L. Porse l V. Stello R. Ferguson '
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