ML20199C529: Difference between revisions

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| project = TAC:L32012
| project = TAC:L32012
| stage = Other
| stage = Approval
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=Text=
=Text=
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'                                                              Nov::bar 10, 1997 Mr. Steven Toelle, M: nager Nuclear Regulatory Assurance and Policy U. S. Enrichment Corporation
Nov::bar 10, 1997 Mr. Steven Toelle, M: nager Nuclear Regulatory Assurance and Policy U. S. Enrichment Corporation 2 Democracy Center 3903 Rockledge Drive Bethesda, MD 20817
        . 2 Democracy Center 3903 Rockledge Drive Bethesda, MD 20817


==SUBJECT:==
==SUBJECT:==
Line 27: Line 26:


==Dear Mr. Toolle:==
==Dear Mr. Toolle:==
The purpose of this letter is to clarify and supplement our {{letter dated|date=October 10, 1997|text=October 10,1997, letter}} to you on the above subject.
The purpose of this letter is to clarify and supplement our {{letter dated|date=October 10, 1997|text=October 10,1997, letter}} to you on the above subject.
Neither our letter or your engineering assessment, submitted by {{letter dated|date=December 31, 1996|text=letter dated December 31, 1996}}, addressed the issue of thin walled cylinders. B3cause there is no prohibition on using thin walled cylinders in the C-360 parent-daughter transfer system, these cylinders must be considered in any assessment. The allowable working pressure for thin walled cylinders is only 100 psig compared to the 200 psig for thick walled cylinders. The technical justification contained in the engineering assessment is inadequate to support your argument that pressure relief protection is not necessary for the parent-daughter transfer operation, particularly with respect to the thin walled cylinders. Therefore, your response to our {{letter dated|date=October 10, 1997|text=October 10,1997, letter}} should also address the use of thin walled cylinders.
Neither our letter or your engineering assessment, submitted by {{letter dated|date=December 31, 1996|text=letter dated December 31, 1996}}, addressed the issue of thin walled cylinders. B3cause there is no prohibition on using thin walled cylinders in the C-360 parent-daughter transfer system, these cylinders must be considered in any assessment. The allowable working pressure for thin walled cylinders is only 100 psig compared to the 200 psig for thick walled cylinders. The technical justification contained in the engineering assessment is inadequate to support your argument that pressure relief protection is not necessary for the parent-daughter transfer operation, particularly with respect to the thin walled cylinders. Therefore, your response to our {{letter dated|date=October 10, 1997|text=October 10,1997, letter}} should also address the use of thin walled cylinders.
I also note that Portsmouth must address the issue of pressure relief for UF6 cylinders.
I also note that Portsmouth must address the issue of pressure relief for UF6 cylinders.
Although the Compliance Plan item is not due until May 1,1998, it is reasonable to assume that ASME will respond in a similar manner. I suggest that USEC pursue a joint Portsmouth and Paducah resolution to the issue of pressure relief, if you have questions, please contact Ms. Merri Horn of my staff.
Although the Compliance Plan item is not due until May 1,1998, it is reasonable to assume that ASME will respond in a similar manner. I suggest that USEC pursue a joint Portsmouth and Paducah resolution to the issue of pressure relief, if you have questions, please contact Ms. Merri Horn of my staff.
Sincerely,                                                 .
Sincerely, f.
Originals signed by D, Martin for/             I f.
Originals signed by D, Martin for/
Robert C. Pierson, Chief                       j Q Special Projects Branch Division of Fuel Cycle Safety and Safeguards, NMSS Dockets 70 7001 Certificate GDP-1 D,!STRIBUTION (ControlNo. oSOS)
I Robert C. Pierson, Chief j
                                                                                  'JpU Wll: m*I Yp l.h f f                   >
Q Special Projects Branch Division of Fuel Cycle Safety and Safeguards, NMSS Dockets 70 7001 Certificate GDP-1
Dockets 70-7001                   NRC File Centen PUBt IC           KO'Brien, Rlli NMSS r/f                 FCSS r/f         Region til       'YFear DHartland, Rlli     ll l  lll l lll l SPB rn                   PHdand. Rll!                                                 I,1      Ili 1,1 [lII,
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D,!STRIBUTION (ControlNo. oSOS)
NAME om ij   bHoadley     , i      frtin       [     k DATE             ll / 7/97       N / /97         ////8/97           // M 97 C = COVER             E m COVER & ENCLOSURE                       N = NO COPY OFFICIAL RECORD COPY 9711200044 971110 "
Dockets 70-7001 NRC File Centen PUBt IC KO'Brien, Rlli ll l lll l lll l
PDH       ADOCK 07007001 C                           PDRm}}
I,1,1 1,1l11, Ili 1,1 [lII, NMSS r/f FCSS r/f Region til
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NAME om ij bHoadley frtin
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DATE ll / 7/97 N / /97
////8/97
// M 97 C = COVER E m COVER & ENCLOSURE N = NO COPY OFFICIAL RECORD COPY 9711200044 971110 "
PDH ADOCK 07007001 C
PDRm}}

Latest revision as of 08:22, 10 December 2024

Provides Clarification & Supplements NRC Re Paducah Gaseous Diffusion Plant,Compliance Plan Issue 3, Action 9.Joint Portsmouth & Paducah Resolution to Issue of Pressure Relief,Suggested
ML20199C529
Person / Time
Site: Portsmouth Gaseous Diffusion Plant, Paducah Gaseous Diffusion Plant
Issue date: 11/10/1997
From: Pierson R
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To: Toelle S
UNITED STATES ENRICHMENT CORP. (USEC)
References
TAC-L32012, NUDOCS 9711200044
Download: ML20199C529 (1)
v • d • e


Text

)

Nov::bar 10, 1997 Mr. Steven Toelle, M: nager Nuclear Regulatory Assurance and Policy U. S. Enrichment Corporation 2 Democracy Center 3903 Rockledge Drive Bethesda, MD 20817

SUBJECT:

PADUCAH GASEOUS DIFFUSION PLANT, COMPLIANCE PLAN ISSUE 3 ACTION 9, ASME CODE INTERPRETATION AND ASSESSMENT RESULTS (TAC NO. L32012)

Dear Mr. Toolle:

The purpose of this letter is to clarify and supplement our October 10,1997, letter to you on the above subject.

Neither our letter or your engineering assessment, submitted by letter dated December 31, 1996, addressed the issue of thin walled cylinders. B3cause there is no prohibition on using thin walled cylinders in the C-360 parent-daughter transfer system, these cylinders must be considered in any assessment. The allowable working pressure for thin walled cylinders is only 100 psig compared to the 200 psig for thick walled cylinders. The technical justification contained in the engineering assessment is inadequate to support your argument that pressure relief protection is not necessary for the parent-daughter transfer operation, particularly with respect to the thin walled cylinders. Therefore, your response to our October 10,1997, letter should also address the use of thin walled cylinders.

I also note that Portsmouth must address the issue of pressure relief for UF6 cylinders.

Although the Compliance Plan item is not due until May 1,1998, it is reasonable to assume that ASME will respond in a similar manner. I suggest that USEC pursue a joint Portsmouth and Paducah resolution to the issue of pressure relief, if you have questions, please contact Ms. Merri Horn of my staff.

Sincerely, f.

Originals signed by D, Martin for/

I Robert C. Pierson, Chief j

Q Special Projects Branch Division of Fuel Cycle Safety and Safeguards, NMSS Dockets 70 7001 Certificate GDP-1

'Jp m*I Yp l.h f f U Wll:

D,!STRIBUTION (ControlNo. oSOS)

Dockets 70-7001 NRC File Centen PUBt IC KO'Brien, Rlli ll l lll l lll l

I,1,1 1,1l11, Ili 1,1 [lII, NMSS r/f FCSS r/f Region til

'YFear DHartland, Rlli SPB rn PHdand. Rll!

g \\usecasme mh OFC SPB b

[SPB SPA

[

SPB

[

NAME om ij bHoadley frtin

[

k i

DATE ll / 7/97 N / /97

////8/97

// M 97 C = COVER E m COVER & ENCLOSURE N = NO COPY OFFICIAL RECORD COPY 9711200044 971110 "

PDH ADOCK 07007001 C

PDRm

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