Letter Sequence Other |
|---|
|
|
MONTHYEARML20140C0091997-06-0202 June 1997
Submits TAR Re Review of Certificate Amend Request for Reducing Scale Pit Raschig Ring Depth from 12 to 6 Inches at Portsmouth Gaseous Diffusion Plant (Ports).W/Nuclear Criticality Safety Approvals
Project stage: Approval
ML20140D9801997-06-0909 June 1997
Ack Receipt of 970516 Application to Amend Coc GDP-2, Requesting Reduction of Tsr 2.5.4.4 Rasching Ring Min Depth. Initial Administrative Review of Application Has Been Completed
Project stage: Approval
ML20141C9451997-06-23023 June 1997
Requests Addl Info Re 970516 Application Requesting Amend to Coc for Portsmouth Gaseous Diffusion Plant to Reduce Technical Safety Requirment 2.5.4.4 Raschig Ring Minimum Depth Requirement from 12 Inches to 6 Inches in Erp Scale
Project stage: Other
ML20216B7001997-09-0202 September 1997
Forwards Compliance Evaluation Rept Prepared to Support Amend of Coc GDP-2.Notice of Amend,Forwarded to Ofc of Fr for Publication,Also Encl
Project stage: Other
ML20211L4921997-10-0606 October 1997
Forwards Amend 5 to Coc GDP-2,reducing Min Depth of Raschig Rings in Scale Pits for Erp Stations 1A & 2 from 12 Inches to 6 Inches in General Design Feature 2.5.4.4.Condition 9 Revised to Include Date of 970516
Project stage: Other
ML20199E6191997-11-17017 November 1997
Forwards Rev 14 to USEC-02,application for NRC Certification for Portsmouth Gaseous Diffusion Plant.Rev Incorporates Changes to SAR & Technical Safety Requirements.Rev Bars Provided in right-hand Margin to Identify Changes
Project stage: Request
1997-06-02
[Table View] |
|
|---|
Category:CORRESPONDENCE-LETTERS
MONTHYEARML20217N5861999-10-22022 October 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-09 Issued on 990827
ML20217H6911999-10-19019 October 1999
Ack Receipt of 990928 Application to Revise Technical Safety Requirements 2.2.3.15 & 2.7.3.14.Initial Administrative Review Finds Application Acceptable.Completion of Review Is Anticipated by 991215
ML20217M2961999-10-15015 October 1999
Provides Addl Changes to Updated SAR Certificate Amend Request,Including Changes Made IAW Item 5 of Plan of Action Schedule for Compliance Plan Issue 2 & Changes That Resulted from Reevaluation of Autoclave head-to-shell O-ring
ML20217N9141999-10-15015 October 1999
Forwards Rev 6 of NCS Cap,Providing Addl Details within Subtask 3.3,addl Ncsa/E Reviews & Establishes New Milestone to Conduct Addl Reviews IAW Procedure XP2=EG-NS1037, Review of Non-Priority 1 & 2
ML20217G1731999-10-14014 October 1999
Requests Addl Info Re Applications Dtd 990924,requesting Amends to Cocs for Paducah & Portsmouth GDPs for Revised QA Programs.Encl Identifies Specific Info Needed.Info Should Be Provided within 30 Days
ML20217G4671999-10-14014 October 1999
Forwards Proprietary Insp Rept 70-7002/99-207 on 990920-23. No Violations Noted.Under Provisions of Section 2.790(d), Repts Containing Info Related to Licensee MC&A Program, Exempt from Public Disclosure
ML20217F5481999-10-0808 October 1999
Discusses Insp Rept 70-7002/99-12 on 990810-0920 at Ports- Mouth Gaseous Diffusion Plant.No Cited Violations of NRC Requirements Were Identified During Insp
ML20217B6121999-10-0606 October 1999
Forwards Copy of Security Incident Log for Month of Sept 1999
ML20217A4781999-10-0404 October 1999
Forwards Revised Event Rept 99-17,for Event Resulting from Determination That Sprinkler Sys Not Capable of Meeting Operability Requirements.Caused by Mineral Deposits.Provided Following Completion of Root Cause Evaluation
ML20212H5991999-09-27027 September 1999
Responds to Violations Noted in Insp Rept 70-7002/99-09. Corrective Actions:Engineering Evaluated Site Rail Track Insp Process for Improvement
ML20216J7891999-09-27027 September 1999
Provides Required 30-day Event Rept 99-19 for Event That Resulted from Failure of Cascade Automatic Data Processing Data Processing Smoke Detection Sys at Portsmouth Gaseous Diffusion Plant.Encl 2 Is List of Commitments Made in Rept
ML20212H1251999-09-24024 September 1999
Notifies NRC of Change in Regulatory Commitments Associated with Submittal Date for Update of Application SAR Chapter 3.Specifics of Commitment Changes of Listed
ML20212H3801999-09-24024 September 1999
Responds to 990723 RAI Re 1999 Annual Update to Certification Applications
ML20212G0551999-09-23023 September 1999
Provides Revised 30-day Event Rept 99-06 for Emergency Condition That Was Declared Alert at Portsmouth Gaseous Diffusion Plant
ML20212G9401999-09-23023 September 1999
Responds to 990806 Reply to NOV in Ltr with Insp Rept 70-7002/99-04.Revised Reply Reviewed & Responses to Violations 1.B & 1.C Do Not Fully Address Needs as Clarified in 990715 Telcon.Resubmit Response within 30 Days of Ltr
ML20212H3721999-09-22022 September 1999
Forwards NRC Form 790 Classification Record Documents for Paducah & Portsmouth GDPs That Were Generated During Month of Aug 1999.Without Encl
ML20217J1211999-09-20020 September 1999
Submits Listed Comments on NRC Proposed Rule, Reporting Requirements for Nuclear Power Reactors
ML20216E6911999-09-13013 September 1999
Forwards 30-day Written Rept Er 99-18,re Actuation of Cascade ADP Smokehead in X-333 Bldg Low Assay Withdrawal Station.Caused by UF6 Release from Law A/B Compressor Shaft Seal Area.Planned C/As Will Be Provided in Revised Rept
ML20211Q7761999-09-10010 September 1999
Forwards Insp Rept 70-7002/99-205 on 990816-20.No Violations Noted.Insp Consisted of Selective Exams of Computer Systems, Representative Records & Interviews with Personnel
ML20211P2091999-09-0909 September 1999
Provides Staff Written Clarification of NRC Reporting Expectations of When Double Contingency Losses Should Be Reported to NRC IAW Bulletin 91-001, Reporting Loss of Criticality Safety Controls, & Suppl
ML20211Q7171999-09-0808 September 1999
Forwards Required 30-day Written Event Rept 99-14,rev 1,re 990628 Event Involving Actuation of Brake Sys on Liquid U Hexafluoride Handling Crane at Plant.Revised Rept Includes Corrective Actions.Commitments in Rept Also Encl
ML20211Q8041999-09-0808 September 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-05
ML20211N8951999-09-0707 September 1999
Forwards Required 30 Day Event Rept 99-17,for Event That Resulted from Determination That 13 Sprinkler Sys Associated with High Pressure Fire Water Sys in Process Buildings Were Not Capable of Meeting Operability Requirements
ML20211M6401999-09-0303 September 1999
Forwards Security Incident Log for Month of Aug 1999,per Requirements of 10CFR95.57(b)
ML20211P3831999-09-0303 September 1999
Forwards Coc GDP-1,amend 3 & Coc GDP-2,amend 4 for Paducah (Pgdp) & Portsmouth (Ports) Gdps,Respectively by Revising Pgdp & Ports QAPs in Vol 3 of Respective Certificate Applications
ML20211M6941999-09-0202 September 1999
Forwards 30-day Written Event Rept 99-09,rev 1,for Event Involving Actuation of Brake Sys on Liquid U Hexafluoride Handling Crane at Plant.Revised Rept Includes Root Cause & Corrective Actions.List of Commitments,Included
ML20211L4871999-09-0101 September 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-07 Issued on 990709
ML20211K4041999-08-31031 August 1999
Forwards Responses to Remaining NRC Questions/Comments from 980601 & 0709 NRC RAIs Re SAR Update
ML20211K2081999-08-31031 August 1999
Discusses 990730 Revised Response to RAI Transmitted by NRC Re 990528 Response for Severity Level IV Violations Identified in Insp Rept 70-7002/99-06
ML20211M7031999-08-30030 August 1999
Forwards Proprietary Rev 0 to Arming & Arrest Authority Security Plan for Paducah & Portsmouth Gaseous Diffusion Plants, for Review & Approval.Encl Withheld
ML20211H2741999-08-27027 August 1999
Forwards Insp Rept 70-7002/99-09 on 990629-0809 & Notice of Violations Re Involving Inadequate Corrective Actions of Concern,Due to Staff Failure to Take Actions to Prevent Recent Derailment
ML20211G9891999-08-26026 August 1999
Informs That on 990812,NRC Completed three-day Licensing Review of Activities Associated with Usec 990526,certificate Amend Request (CAR) to Reopen Compliance Plan Issues 8,9 & 23 at Portsmouth Plant
ML20211D9311999-08-23023 August 1999
Forwards Required 30-day Written Event Rept 99-16 Re Event Involving Autoclave High Condensate Level Shutoff Actuation at Portsmouth Gaseous Diffusion Plant.List of Commitments, Included
ML20211A7011999-08-17017 August 1999
Forwards Copy of Final Amend to 10CFR76 for Info of Subcommittee.Final Rule Is Being Transmitted to Fr for Publication.Final Rule Will Amend Regulations That Apply to Paducah & Portsmouth Gaseous Diffusion Plants
ML20211C5951999-08-17017 August 1999
Submits Changes to Authorized Derivative Classifier List for Portsmouth Gdp.Changes Are Current as of 990806
ML20211D2351999-08-16016 August 1999
Replaces Ltr Forwarding Proprietary Followup to Submittal Re Holdup of U Enriched Greater than or Equal to 10 Weight Percent U-235 in Process Equipment
ML20211D6341999-08-16016 August 1999
Forwards Proprietary Info Containing Process That Would Be Followed Once Deposit Identified That Could Cause Usec to Exceed NRC Possession Limit.Proprietary Encl Withheld
ML20211D5771999-08-16016 August 1999
Submits Rev 1 to Event Rept 99-12,to Clarify That Only One of 50 Ball Lock Pins on Packages Used in Shipment Was Unfastened When Shipment Was Received.Cause Has Not Been Determined.Usec Revised Procedure XP4-TE-UH2400
ML20211C3941999-08-13013 August 1999
Forwards Proprietary Followup to Submittal Re Holdup of U Enriched Greater than or Equal to 10 Weight Percent U-235 in Process Equipment.Encls Withheld
ML20211C8031999-08-13013 August 1999
Forwards Proprietary Versions of Rev 33 Changes to Fundamental Nuclear Matls Control Plan & Transportation Security Plan.Proprietary Encl Withheld
ML20210P6981999-08-10010 August 1999
Forwards Insp Rept 70-7002/99-11 on 990719-23.No Violations Noted.Insp Consisted of Selective Exam of Procedures & Representative Records,Interviews with Personnel & Observations of Activities in Progress
ML20210Q5291999-08-0909 August 1999
Responds to Violations Noted in Insp Rept 70-7002/99-07. Corrective Actions:On 990622,results of Nda Surveys for G-17 Valves Moved Outside Bldg X-744H Were Obtained
ML20210Q6061999-08-0909 August 1999
Forwards NRC Form 790 Classification Record Documents for Paducah & Portsmouth Gdps,Per 10CFR95.57.Records Were Generated During Month of July 1999.Without Encl
ML20210P1841999-08-0606 August 1999
Revised Response to NRC NOV Re Violations Noted in Insp Rept 70-7002/99-04.Corrective actions:DOI-832-99-03 Revised & Reissued on 990729,to Include Any Document Utilized to Support Safety Basis in Ncse
ML20210N8511999-08-0606 August 1999
Forwards Copy of Security Incident Log for Month of July 1999
1999-09-09
[Table view]
Category:OUTGOING CORRESPONDENCE
MONTHYEARML20217N5861999-10-22022 October 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-09 Issued on 990827
ML20217H6911999-10-19019 October 1999
Ack Receipt of 990928 Application to Revise Technical Safety Requirements 2.2.3.15 & 2.7.3.14.Initial Administrative Review Finds Application Acceptable.Completion of Review Is Anticipated by 991215
ML20217G4671999-10-14014 October 1999
Forwards Proprietary Insp Rept 70-7002/99-207 on 990920-23. No Violations Noted.Under Provisions of Section 2.790(d), Repts Containing Info Related to Licensee MC&A Program, Exempt from Public Disclosure
ML20217G1731999-10-14014 October 1999
Requests Addl Info Re Applications Dtd 990924,requesting Amends to Cocs for Paducah & Portsmouth GDPs for Revised QA Programs.Encl Identifies Specific Info Needed.Info Should Be Provided within 30 Days
ML20217F5481999-10-0808 October 1999
Discusses Insp Rept 70-7002/99-12 on 990810-0920 at Ports- Mouth Gaseous Diffusion Plant.No Cited Violations of NRC Requirements Were Identified During Insp
ML20212G9401999-09-23023 September 1999
Responds to 990806 Reply to NOV in Ltr with Insp Rept 70-7002/99-04.Revised Reply Reviewed & Responses to Violations 1.B & 1.C Do Not Fully Address Needs as Clarified in 990715 Telcon.Resubmit Response within 30 Days of Ltr
ML20211Q7761999-09-10010 September 1999
Forwards Insp Rept 70-7002/99-205 on 990816-20.No Violations Noted.Insp Consisted of Selective Exams of Computer Systems, Representative Records & Interviews with Personnel
ML20211P2091999-09-0909 September 1999
Provides Staff Written Clarification of NRC Reporting Expectations of When Double Contingency Losses Should Be Reported to NRC IAW Bulletin 91-001, Reporting Loss of Criticality Safety Controls, & Suppl
ML20211Q8041999-09-0808 September 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-05
ML20211P3831999-09-0303 September 1999
Forwards Coc GDP-1,amend 3 & Coc GDP-2,amend 4 for Paducah (Pgdp) & Portsmouth (Ports) Gdps,Respectively by Revising Pgdp & Ports QAPs in Vol 3 of Respective Certificate Applications
ML20211L4871999-09-0101 September 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-07 Issued on 990709
ML20211K2081999-08-31031 August 1999
Discusses 990730 Revised Response to RAI Transmitted by NRC Re 990528 Response for Severity Level IV Violations Identified in Insp Rept 70-7002/99-06
ML20211H2741999-08-27027 August 1999
Forwards Insp Rept 70-7002/99-09 on 990629-0809 & Notice of Violations Re Involving Inadequate Corrective Actions of Concern,Due to Staff Failure to Take Actions to Prevent Recent Derailment
ML20211G9891999-08-26026 August 1999
Informs That on 990812,NRC Completed three-day Licensing Review of Activities Associated with Usec 990526,certificate Amend Request (CAR) to Reopen Compliance Plan Issues 8,9 & 23 at Portsmouth Plant
ML20211A7011999-08-17017 August 1999
Forwards Copy of Final Amend to 10CFR76 for Info of Subcommittee.Final Rule Is Being Transmitted to Fr for Publication.Final Rule Will Amend Regulations That Apply to Paducah & Portsmouth Gaseous Diffusion Plants
ML20210P6981999-08-10010 August 1999
Forwards Insp Rept 70-7002/99-11 on 990719-23.No Violations Noted.Insp Consisted of Selective Exam of Procedures & Representative Records,Interviews with Personnel & Observations of Activities in Progress
ML20211A7901999-08-0404 August 1999
Forwards Info Requested During Briefing by NRC Staff on 990726 Re NRC Interactions with Usec
ML20210G0391999-07-26026 July 1999
Forwards Compliance Evaluation Rept & Fr Notice for Revised Qaps,Per 990212 Application
ML20210D8181999-07-23023 July 1999
Submits Response to SA Toelle Ltr Dtd 990614, 10CFR76.68(a)(3) Decreased Effectiveness Reviews & RAI for Paducah & Portsmouth Transmittals of 1999 Annual Update to Certification Applications
ML20210V3481999-07-16016 July 1999
Informs That Staff Completed Review of New Payment Surety Bonds (Psb) for Paducah & Portsmouth Gdps,Which Were Provided in .Cancelled Psbs for Liberty Mutual Insurance Co & Safeco Insurance Co of America,Encl
ML20209G2501999-07-14014 July 1999
Forwards Copy of Compliance Evaluation Rept Prepared to Support Resolution & Closure of Violation in Insp Rept 70-7002/97-203,re Failure to Have Adequate Benchmarks in Validation Rept Analysis of Models of U Sys
ML20209F1031999-07-12012 July 1999
Forwards Insp Rept 70-7002/99-204 Conducted on 990614-17.No Violations Noted.Major Areas Inspected:Mc&A Safeguards Program.Rept Details Withheld,Per 10CFR2.790
ML20209E8711999-07-0909 July 1999
Discusses Insp Rept 70-7002/99-08 on 990614-17 & Forwards Notice of Violation
ML20209E8551999-07-0909 July 1999
Forwards Insp Rept 70-7002/99-07 on 990517-0629 & Nov. Violation of Concern Because Staff Displayed Lack of Rigor in Failing to Ensure That Nuclear Facility Criticality Safety Controls Were Implemented as Listed
ML20209D4821999-07-0707 July 1999
Discusses Licensee 990702 Request That NRC Exercise Discretion Not to Enforce Compliance with Actions Required by Tsrs 2.2.3.2,2.4.3.1,2.5.3.1 & 2.7.3.2.NRC Concluded That NOED Warranted
ML20209B7911999-07-0101 July 1999
Forwards Insp Rept 70-7002/99-203 Conducted on 990607-11.No Violations Noted
ML20196H8421999-06-29029 June 1999
Discusses Insp Rept 70-7002/99-06 on 990322-26 & Forwards Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $55,000
ML20196F1121999-06-23023 June 1999
Responds to 990528 Response to NOV Submitted by with Insp Rept 70-7002/99-06.Response Not Fully Addressing Informational Needs in Notice.Response to Notice Requested to Be Resubmitted within 30 Days of Date of Ltr
ML20207H5001999-06-11011 June 1999
Discusses Insp Rept 70-7002/99-05 on 990406-0515 & Forwards Notice of Violation Re Weakness in Staff Knowledge & Implementation of Plant Procedures in Several Program Areas
ML20195J2001999-06-11011 June 1999
Ack Receipt of Certificate Amend Request Re Reopening of Compliance Plan Issues 8,9 & 23.Staff Has Completed Initial Administrative Review of Application & Anticipates Completing Review by 990831
ML20207G2641999-06-0808 June 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-03 Sent on 990528.Reviewed Corrective Actions & Have No Futher Questions.Actions Will Be Examined During Future Insp
ML20207F2571999-06-0202 June 1999
Informs That NRC Disagrees with Usec Conclusion for Not re-opening Issue 2 of Compliance Plan,Since Proposed Change to Sarup Submittal Constitutes Major Rev to Operating Safety Bases Contained in Technical Safety Requirements
ML20207A0121999-05-21021 May 1999
Forwards Insp Rept 70-7002/99-04 on 990222-0312 & Notice of Violations Re Inadequate Knowledge & Understanding by Some Staff & Mgt of Corrective Action
ML20207E5421999-05-18018 May 1999
Discusses Apparent Violation Involving Usec & Lockheed Martin Utility Svcs,Inc.(Lmus) Mgt Discriminating Against Lmus Employee at Paducah Gaseous Diffusion Plant. Violation Being Considered for Escalated Ea.W/O Encl 2
ML20206S3091999-05-17017 May 1999
Confirms Meeting Scheduled for 990610 in Lisle,Il to Discuss Failure to Classify Emergency Conditon as Alert IAW Portsmouth EP
ML20206N3851999-05-12012 May 1999
Forwards Amend 1 to Coc GDP-1 & Amend 3 to Coc GDP-2 IAW 990316 Applications,Revising Paducah & Portsmouth Gaseous Diffusion Plants Technical Safety Requirement Sections 3.1.1 & 3.10.4
ML20206H5601999-05-0606 May 1999
Ack Receipt of Responding to Notice of Violation Noted During Insp 70-7002/99-202 of 990319.Corrective Actions Acceptable,Per 10CFR2.201
ML20206E9761999-05-0303 May 1999
Forwards Amend 2 to Coc GDP-2,reducing Ports Fundamental Nuclear Matl Control Plan Requirements Re Min Number of UF6 Cylinder Receipts from Russia
ML20206E3781999-04-29029 April 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/99-01.Actions Will Be Examined During Future Insp
ML20206E4281999-04-29029 April 1999
Forwards Insp Rept 70-7002/99-03 on 990222-0406 & NOV Re Failure to Understand & Implement Personnel Safety Controls During Maint Evolution
ML20206B5611999-04-22022 April 1999
Forwards Insp Rept 70-7002/99-06 on 990322-26 & Nov.One Violation Identified Involving Failure of Plant Shift Superintendent,Acting as Incident Commander for Er to Fire on 981209,to Classify Emergency Condition as Alert
ML20205K4251999-04-0707 April 1999
Forwards Compliance Evaluation Rept for GDP-1 & GDP-2, Supporting Change in Title of Executive Vice President, Operations.Notice of Amend,Which Has Been Forwarded to Ofc of Fr for Publication,Encl
ML20205J2051999-04-0606 April 1999
Forwards Amend 1 to Coc GDP-2,revising Issue A.2 of Portsmouth Gaseous Diffusion Plant Compliance Plan.Condition 8 Revised to Include Date of 981228
ML20205F6721999-03-31031 March 1999
Forwards Proprietary Copy of Compliance Evaluation Rept Prepared to Support Amend of Coc GDP-2.Notice of Amend,Which Has Been Forwarded to Ofc of Fr for Publication,Also Encl. Proprietary Encls Withheld
ML20196K3981999-03-19019 March 1999
Forwards Insp Rept 70-7002/99-202 Conducted on 990222-26. Violation Noted.Major Areas Inspected:Mc&A Safeguards Program.Rept Details Withheld,Per 10CFR2.790(d)
ML20204H9611999-03-18018 March 1999
Forwards RAI Re 990212 Applications Requesting Amends to Coc for Paducah & Portsmouth Gaseous Diffusion Plants for Revised QAPs
ML20204D7991999-03-17017 March 1999
Discusses Insp Rept 70-7002/99-01 on 990112-0222 & Forwards Notice of Violation.Violation Identified Involved Licensee Staff Returning Sys to Svc Following Safety Actuations Without Appropriately Documenting Safety Actuations
ML20204E2341999-03-17017 March 1999
Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Rept 70-7002/98-18 .Reviewed C/As & Have No Further Questions.C/As Will Be Examined During Future Insps
ML20207G4991999-03-0505 March 1999
Discusses Rescheduling of 1999 Portsmouth Emergency Preparedness Exercise to 990914.Date Change Acceptable to Local Officials
ML20207B3361999-03-0202 March 1999
Ack Receipt of 990212 Applications for Amend to Cocs GDP-1 & GDP-2.Staff Has Completed Initial Administrative Rev of Applications & No Omissions of Deficiencies Were Identified. Staff Anticipates Completing Review by 990416
1999-09-09
[Table view] |
Text
. - . - - . . _ _ _
r - e yde og
[ 't UNITED STATES
{
j j NUCLEAR REGULATORY COMMISSION
,
1 Mr. James H. Miller Vice President, Production U. S. Enrichment Corporation 2 Democracy Center l 6903 Rockledge Drive !
Bethesda, MD 20817 )
l
SUBJECT:
PORTSMOUTH CERTIFICATE AMENDMENT REQUEST - SCALE PIT RASCHIG RINGS MINIMUM DEPTH IN ERP (TAC NO. L32032) 1 l
Dear Mr. Miller:
1 i
This refers to your application dated May 16,1997, requesting an amendment to the
! Certificate of Compliance for the Portsmouth Gaseous Diffusion Plant to reduce the Technical Safety Requirement 2.5.4.4 Raschig ring minimum depth requirement from 12 inches to 6 inches in ERP scale pits 1 A and 2.
Our review of your application has identified one issue that needs to be resolved before final action can be taken on your request. This issue has been discussed with Mr. Mark Smith of your staff. It concerns the possibility of accidentally released UF6 (cylinder / valve rupture, condenser / accumulator f ailure, pigtail / gasket f ailure, compression loop piping f ailure, etc.) exothermically reacting with atmospheric moisture or any other substances in EPP and generating suff{clent heat to actuate the sprinkler system.
I P;r ase provide the minimum release quantities of UF6 that could actuate the sprinkler o stem in ERP su-h that sufficient enriched uranium from the relt.ase and water from the celuge could enter tne scale pits resulting in a coticality. Provide the bases and justification for all conclusions. Make conservative assumptions (humidity level, ambient temperature, local convection, heat loss to surrounding structures and equipment, UF6 release rate, etc.) so as to bound the analysis. Please provide the additional information within 15 days of this letter. Please reference the above TAC No in future correspondence related to this request. )}
/
N@ 4 g!s2g;g gnyg2 ,
C l
i 250.139 lillll!lll!!!llJlll lllllll Ill!llll
..Mr. James H. Miller I I .
l !
l If you have any questions regarding this matter, please contact me at (301) 415-8113.
i Sincerely, original signed by Y. Faraz j l
, Yawar H. Faraz l Project Manager i Enrichment Section l Special Projects Branch !
l Division of Fuel Cycle Safety l and Safeguards, NMSS i Docket 70-7002 Certificate GDP-2
- cc
- Mr. Dale Allen, PORTS Mr. Randy DeVault, DOE l DISTRIBUTION: (Control No.130S)
Docket 70-7002 NRC File Center PUBLIC Rlll
- KO'Brien, Rlli CCox, Rlli - JDavis, FCOB WSchwink, FCOB TWenck l MHorn RPierson YChen, FCOB DStout, FCOB KWinsberg
! NMSS r/f FCSS r/f SPB r/f PHiland, Rill DHeartland G:\RAIPOR.A7 OFC SPB C _M, 6 p%, ,_
l NAME YFaraz[ b$$adley driik DATE 6 //7/97 h M/97 [f7/97 C = COVER E = COVliR & ENCLOSURE N = NO COPY OFFICIAL RECORD COPY l
l l
l l
9