ML19220B937

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Forwards Status of Response to NRC Requests for Addl Info
ML19220B937
Person / Time
Site: Crane Constellation icon.png
Issue date: 04/05/1975
From: Washburn B
Office of Nuclear Reactor Regulation
To: Kniel K
Office of Nuclear Reactor Regulation
References
NUDOCS 7904270676
Download: ML19220B937 (9)
v • d • e


Text

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UNITED STATES NUCLEAR REGULATORY CCMMISSION W ASHINGTON. D.

C.

20555 April 5, 1975 Oceket No. 50-320 K. Kniel, Chief, Light Water Reactors Branch 2-2, ;

STATUS OF APPLICANTS' RESPONSES TO CUR RZ;UESTS FCR ADDITIONAL INFCPJ.*ATION---THRIZ MILE ISLAND NUCLEAR STATION U'iIT 2 (TMI-2)

The enclosed tabulations update the status of the applicants' response to our requests through second-round.

It should be noted that the responses to the Auxiliar/

and Power Conversion Systens 3 ranch first-round questions were conpleted April 4, 1975.

This is eight weeks earlier than was projected in the applicants' letter received :,iarch 14, 1975.

The review schedule for this branch should be appropriately revised.

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3. W. Washburn Project Manager Light Water Reactors Sranch

-2 Division of Reactor Licensing Snclosures:

1.

Status of Applicants' Respense to First-round Questions--Supplenent 5, April 5, 1975 2

Status of Applicants' Respense to Second-round Ouestions, April 5, 1975 Distribution:

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April 5, 1975 Do c ke t.';o. 50-320

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Draft Q-2's due to lei on 4/11/75 Al~i!LI ARY AND PCWER CCNVERSION SYSTEMS 3RANCV Apelicants' response to ;-l's was completed 4/h/75, S weeks earlier than Projected in applicants' letter received 3/14/75 Current review schedule requesting draft

-2's by 6/13/75 should be improved; this is the critical path in the current review schedule.

Draft Q-2 date should be im-proved to 5/16, the latest date for 4 other branches, or to 5/30 at the latest.

CCNTAIN%ENT SYSTE:'S 3 RANCH Draft ;-2's due to L.M on 4/11/75

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Draft ;-2's due to L?M on 5/16/75 REACTOR SYSTE','S 3 RANCH Applicants' response due 6/27/75 e..". D C v..,o,.C a v_ e.. a-2,.. nu..

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241.1 26 Responded; test progran is continuing Open Items:

None 84 090 April 5, 1975 Decket No. 50-320

SECCND-ROUND QUESTIONS------

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RE MONSS STATUS /CC:Cl.ENTS ACCIDENT ANALYSIS 3 RANCH Applicants' response due 6/27/75 SITE ANALYSIS 3 RANCH Draft ;-2's due to lpm cn 4/11/75 RADIOLOGICAL ASSESSMENT ERANCH Draft ;-2's due to lpm en 5/16/75 OUALITY ASSURANCE 3 RANCH Applicants' respcnse due 5/23/75 INDUSTRIAL SECURITY AND E:,IER3ENCY PLANNING 3 RANCH 42.10 25 Responded 42.11 25 Responded 42.12 25 Responded Open Itens:

None (Request for revision of site security plan has been subnitted for concurrences; applicants' response is expected in June 1975.)

CpERATOR LICENSING 3 RANCH 431.1 25 Responded 431.2 25 Responded 431.3 25 Respondad 431.4 25 Responded 431.5 25 Respended 431.6 25 Responded 431.7 25 Responded 432.1 25 Responded 84-091

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-3 April 5. 1975 Decket :io. 50-320

SECC iD-RO U:iD QUESTIONS-----

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NU'GER RESPCNSE STATUS /CO:/.'.:E'iTS 432.2 25 Responded

(::cTE: Response indicates that administrative procedures will hg revised.)

432 3 25 Responded 432.4 25 Responded 432 5 25 Responded Open Itens:

None 134- ()4N

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O April 5, 1975 Oceket No. 50-320 THREE '/.ILE ISLAND NUCLEAR STATION UNIT 2 STATUS OF ApFLICANTS' RESPCNSE TO FIRST-ROUND ;UESTIONS-----

Supplement 5 - (Following submittal of Amendment 26, 4/4/75)

RE;UEST RESFCNDING NU:'3ER Ay2NC/.ENT NU'GER RESPONSE STATUS /CO:C/.INTS GENERAL 26 Reviced Figures: 1.2-3 thru 1,2-20 and 1.2-25 thru 1.2-30.

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None AUXILIARY AND POWER CONVERS:CN SYSTE:fS 3 RANCH 02.14 26 Responded (Revised the previous response in Amendment 22).

02.19 26 Res;cnded (Revised and expanded the previous response in Amendment 23).

02.22 26 Respended 02.23 26 Responded (Referenced response to Question 02.19 above).

02.24 26 Revised Figure 2.24-1 previously filed in Amendment ?.1.

02.56 26 Revised previcus response in Amendment

22. (Revised Figures 9.4-1,-3, 5,-6,-7,

- 6, and - 9 ).

02.62 26 Revised previcus response in Amendment 23; provided revised HVAC drawings listed under 02.56 above.

Open Items:

None CONTAIN?.IENT SYSTE:/S 3RA: CF 03.10 26 Responded (Respense _s incomplete; did not provide analysis of the differential pressure for the R.3.

fan cooler hcusing and ductwork including design pressure and transient pressure).

Open Items:

Response to ;-03.10 is inccmplete; ;-2's should address tnis.

84~093

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11.3 26 Responded 11.10 26 Revised the previous response in Amendment 25.

11.11 26 Responded 11.13 26 Respended Ocen Items:

li.5-Premised 5/30/75.

IMTERIALS ENGINEERING 3 RANCH 12.4 26 Revised the previous response in Amendment 24 Open Items:

12.3-Premised 5/30/75 12.10-Premised 5/30/75 12.6-Revised, ex anded response was promised 4 4 in meeting on 3/6; current promise is 5/30/75 12.9-Inservice inspection of steam gen-erator tubes needs staff position.

STRUCTURAL ENGINEERING 3RANCF 13 3 26 Responded; needs evaluation.

Open Items:

Ncne REACTCR SYSTE:45 ERANCF 21.18 26 ATWS: Response indicated that 3&W topical reports, 3AW-10016? and 3AW-10099, had been submitted.

Earlier resconse was submitted in letter dated 2/14/75 Open Items:

ATWS--Applicants need to address staff concerns expressed in the 2/27/75 ATWS meeting.

Topical review is centinuing; RS3 should formulate formal questions er positions to elicit applicants plant 84-094

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specific analysis and detailed discussion of the applicability and ccnsequences of the generic topical report assumptions and sensitivity analyses in T.MI-2.

(Scoping type of analysis T.ay be sufficient to permit evaluation of the final generic analysis results.)

ECCS--Resconse to ^-21.20 in Anencnent 26 indica'es that review is continuing t

and that applicants are awaiting 3&W reanalysis before further consideration.

RS3 should formulate questions or pcsitions as for ATWS above; safety review scaedule will not accommodate a serial approach as envisioned by the applicants.

II.ZCTRICAL INSTRL".tENTATION AND CONTROI. SYSTE%S 3RANC'J 22.11 26 Responded (Exceptions conformance to R.G. 1.47)

Open Items:

22.11-Conformanc e to R.S. 1.47 is under the applicants; response is review by /30/75.

promised 5 CORE PERFOR'.IANCE 3RANC'J 23.9 26 Amended previous response in Amendment 23; referenced response to follow-up second-round question 241.1 in Amendment 25.

(Amendment 25 did not respond to 241.1; response to 241.1 is in Amendment 26).

Open Items:

None.

ACCIDENT ANAI.YSIS 3RA.','C'J Open Items:

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No:.3 84~095

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NU'GER RESPONSE STATUS /COM::E'CS RADICICGICAL ASSESSMENT 3 RANCH Cpen Items:

None (Radicactive source, during re-fuelling, sone drawing to be submitted 9/1/75: our requirement for this information prior to the SER should be reinforced in the RAE ;-2's).

OUAI.ITY ASSURANCE 3 RANCH Open Itams:

None INDUSTRIAL SECURITY AND EMERGENCY PLANNING 3 RANCH Open Items:

None OPERATOR LICENSING 3 RANCH Open Items:

None 84~09G

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