ML16340D329

Design Verification Program Status Rept

ML16340D329
Person / Time
Site:	Diablo Canyon
Issue date:	03/31/1983
From:	NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
To:
Shared Package
ML16340D328	List: ML16340D327 ML16340D329
References
NUDOCS 8304270071
Download: ML16340D329 (22)

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Diabl o Canyon Desi gn Verification Program Status Report - March 31, 1983 Enclosure I.

PG&E Effort The PG&E Phase I seismic design verification effort of safety-related structures and equipment is progressing.

Submittal 10 to the PG&E Phase I Final Report was issued on March 15, 1983.

The report addresses the criteria and methodology used in the PG&E design verification.

The results will be included in a final submittal.

The report is under review by the IDVP and by the staff.

The PG&E Semi-monthly Report of March 25, 1983 provides a status of the analyses and modifications of safety-related structures and equipment with respect to the requirements for Step 1.

For most areas, 805 of the analyses have been completed.

The major exception is the containment annulus steel structure.

Horizontal response, spectra of the structure have not been finalized and acceleration response spectra for analysis of piping and equipment are being generated.

The containment annulus structure was the subject of meetings by PG&E and the IDVP (February 23-24 and March 20-30) which were attended by NRC staff.

The containment annulus structure modifications are estimated to be about 10 percent comp'leted.

Pipe support modifications are about 50 percent complete and modifications in the turbine building have not started.

We estimate that the overall status of completion of all Step 1 required modifications is about 50 percent.

On March ll, 1983.PG&E submitted

.the Phase II Status Report in accordance with the Step 1 requirements and schedule.

The report is under review by the staff.

The PG&E

efforts include responses to EOI's identified 8304270071 8304l5 PDR ADOCK 05000275 P

PDR jl

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by the IDVP (in progress),

responses in five areas for additional verification (in progress

- see under IDVP), audit of construction quality assurance (completed) and resolution of open items identified by PGSE.

The resolution of the following four items is in progress:

rating of 125 V

DC Switch gear shared electrical power supply for HVAC of control room component cooling water system design heat loads'and HYAC capacity for switch gear areas.

PG&E and the IDVP have met to discuss the Phase II EOI's identified by the IDVP, in particular those that relate to the need for additional verification (see under IDYP).

II.

IDVP Effort The following EOI (error or open item) information for Phase I and Phase II is based on the IDVP Semi-monthly Report. of March 25, 1983.

Also listed, in 1

parentheses for comparison, is the information from our previous status report.

Total Phase I Phase II 201 (194) "

72 (70)"

Construction A

29 (29)

Errors Non Errors Resolution Resolved by IDVP Evaluation Continuing 15 (17) 186 (177) 181 (164) 20 (30) 7 (22) 65 (48) 53 (3) 19 (67) 29 (29) 29 (18)

(11)

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The total EOI's for Phase I and Phase II increased by 7 and 2, respectively.

The decrease in EOI errors, in particular for Phase II, is due to "downgrading" as a result of further evaluation.

It is also noted that about three quar ters of Phase II EOI's are now closed, compared to less than 10 percent in the previous report.

The IDVP has essentially completed its review of the initial sample and has issued Interim Technical Reports on the various subjects.

A complete list of ITR's is attached.

The major effort of the IDVP with respect to Phase I

is the review of the ongoing PGSE design verification effort of safety-related structures and equipment.

The IDVP has requested and received from PG&E detailed information (criteria, procedures, work packages) which is now under review.

With respect to Phase II the IDVP review of the three initial sample systems has been completed (auxiliary feedwater

system, 4160 V safety-related electrical

system, and control room ventilation and pressurization system).

ITR's have been issued and are under staff review.

The following five areas have been identified for additional verification:

1.

redundancy of equipment in shared systems 2.

selection of system design pressure and temperature 3.

environmental consequences of high energy line breaks outside containment 4.

jet impingment analysis inside containment 5.

circuit separation

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ITR's have been issued for these subject and the resolution is being pursued by the IDVP.

Revisions to the ITR's are expected to be issued.

In the March 25 semi-monthly report the IDVP informed us that the Phase I

and Phase II IDVP Status reports will be combined and issued on April 15 instead of April 8.

In addition a major slip from April 1 to May 20 has been projected for the issuance of the IDVP Final Reports on the Hosgri and Non-Hosgri spectra.

III. Staff Effort The staff effort at this time is focused on review and evaluation of the following documents:

Interim Technical Reports issued by the

IDYP, PGSE Phase I Final Report Supplements and PGSE Phase II Status Report.

The Staff has been attending meetings between PG&E and the IDVP at which the various issues are discussed (The Joint Intervenors and the State of California are advised of such meetings and have been attending them selectively).

The staff review is preliminary because the information is subject to change.

The major effort toward preparation of a Safety Evaluation Report in support of a staff recommendation regarding fuel load authorization (Step

1) cannot be completed until the appropriate reports have been submitted in their final form.

The studies at BNL are nearing completion.

To expedite the reporting we requested BNLto inform us by letter of their -'findings as soon.as possible and to prepare a more detailed report at a later date.

BNL has provided to Teledyne detailed. information on their analyses.

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The staff evaluation of the component cooling water system is continuing.

We are awaiting additional information from PG&E to complete the effort.

(This effort is in responseto all allegations made in early January.)

The PG&E schedule for completion of items necessary to permit reinstatement

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of the suspended low power license (Step 1 and Step 2 in Phase,",I.)

and for issuance of a full power license (Step 3) has slipped.

The principal'.

reasons for the delay are additional structural

analyses, additional modifications in the containment annulus structure and lower than expected production rates at the plant.

The projected PG&E dates are as follows:

New Date (PG&E ltr 03/02/83)

NRC decision PG&E action Previous Date (PG&E ltr 12/2/82)

NRC decision Step 1 - fuel load and cold system testing 06/30/83 r

06/30/83 03/31/83 Step 2 - criticality and low power operation Step 3 - issuance of full power license 08/15/83 09/30/83 07/15/83 08/15/83 05/15/83 06/30/83 The new dates for Step 2 and Step 3 include adequate lead time for the necessary NRC decision prior to the start of the PG&E action for these steps.

However, PG&E advised the staff that there are only a few days, if

any, between the NRC decis'ion date for Step 1 and the PG&E readiness to commence the fuel loading.

Therefore, either an earlier NRC decision would be required or PG&E fuel loading would be delayed.

Based on our attendance at the meetings between PGSE and the IDVP and on the status as described in the PGRE and IDVP semi-monthly reports, we conclude that the following activities could impact the current schedule:

(1) continuing analysis of containment annulus structure; (2) modification in the annulus, turbine building and pipe suppor ts; (3) review bythe IDVP of the PGSE corrective actions;. and,(4) issuance of the necessary reports.

IflTEP,I," TECH.'lICAL REPORTS (ITR) lTR -

1 ITR -

2 Additional Verification and Additional Sampling, Rev. 0, RLCA, June 6,

1982 Additional Verification and Additional Sampling, Pev.

1, RLCA, October 22, 1982 Evaluation of equality Assur ance Program and Implementation Revie;r, Rev. 0, TES, June 23, 1982 ITR -

3 Tangos

.. Rev. 0, RLCA, July 16; 1982 ITR -

4 Shake Table Testing Pev.

0, RLCA, July 23, 1982 ITR 5

Design Chain Rev. 0, RLCA, August 19, 1982 ITR 6

Auxiliary Building Rev. 0, RLCA, September 10, 1982 ITR 7

ITR 8

ITR 9

ITR -

>0 ITR -

11 ITR 12 ITR -

13 Electrical Raceway Supports Rev. 0, RLCA, September 17, 1982 Verification Program for PG&E Corrective Action Rev. 0, RLCA, October 5,

1982 Development of the Service Related Contractor List For tion-Seismic Des',gn l,'ork Performed for

. DCRPP-1 Prior to June 1978 - Phase II Rev. 0, R.

F.

Peedy, October 15, 1982

~ w Verification of Design Analysis Hosgri Spectra Rei. 0, RLCA, October 29, 1982 Pacific Gas

& Electric / 'estinghouse Seismic Interface Pevi cia Pe

, 0, TES, llovemb r 2, 1982 Piping.

Rev.

0, RLCA., November 5,

1982 Soils - Intake Structure Pev.

0, RLgA, Hovemb r 5, 1982

l lTR-ITR-sTR-16

~.'e!.ificat-:.on of the Temp rature, Pl essu?'e u id'tv and Su? mercence Ervironments Used for Safety-Related Equipment Specification Outside Contain-..ent for Auxiliaty F=edwatc!

Sys cm and Control Room Ventilation and Pressuirzation System Rev. 0, Sl EC, D cember 6, 1982 HVAC Duct and Supports Report Rev. 0, RLCA, December 10, 1982 Soils '- Outdoor l)ater Storage Tanks Rev. 0,'LCA, December 8,

1982 ITR-ITR 17 18 Piping - Additional Samples Rev. 0, RLCA, December 14, 1982 Verification of the. Fire Protection Provided for Auxiliary Feedwater System;.

Control Room Ventilation and Pressurization

System, Safety-Related Portion of the 4160 Y Electric System Rev.

0,

SllEC, December 13, 1982 ITR Verification of the Post-LOCA Portion of the Radiation Environments Used For Safety Related Equi pment Speci ficati on Outsi de Containment for Auxi 1 iary Feedwater System and Control Room Ventilation and Pressurization System Pev.

0,

SHEC, December 16, 1982 ITR - 20 Verification of the Hechanical/Nuclear Design of the Control Room Vent i 1 ati on and Press urizati on System Rev. 0, SllEC, December 16, 1982 ITR-21 Verification of the Effects of High Energy Line Cracks and tloderate Energy Line Breaks for Auxiliary Feedwater System and Cwatrol Room Ventilation and Pressurization System Rev.

0SllEC, December 15, 1982 ITR22 Verificati on of thechani cal/Nucl ear Portion of the Auxiliary Feecwater System Rev.

0, Si!EC, December

'17, 1982 Verification of High Energy Line Break and Internally Generated hissile Review - Oui:side Containment for Auxiliary Feedwater System and Control. Fogm Ventilation and Pressurization System Rev. 0,

SllEC, December 20, 1982

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ITP, -

24 Verification of the 4160 V Safety Related Electrical Distribution System Rev.

0,

SHEC, D cember 21, 1982 ITR - 25 Verification of the Auxiliary Feedwater System Electrical Design Rev. 0,

SHEC, December 21, 1982 ITR - 26

'ITR 27 ITR - 28 ITR - 29 ITR - 30 ITR - 31 Verification of the Control Room Ventilation and Pressurization System Electrical'esign Rev. 0,

SHEC, December 21, 1982 Verification of the Instrument and Control Design of the Auxiliary Feedwater System Rev, 0,

SHEC, December 23, 1982 Verification of the Instrument and Control Design of the Control Room Ventilation and Pressurization System Rev. 0,

SHEC, December 23, 1982 Design Chain - Initial Sample Rev. 0, SHEC, January 17, 1983 Small Bore Piping Report Rev. 0, RLCA, January 12, 1983 HYAC Components Rev. 0, RLCA, January 14, 1983 ITR - 34 Verification of Diablo Canyon project Efforts by Stone 8 Hebster Engineering Corpora'ti'on Rev. 0, SHEC, February 4, 1983 ITR 35 ITR - 36 Not issued

~ i Final Report on Construction Ouality Assurance Evaluation of Guy F. Atkinson Company Rev. 0, SflEC, February 25, 1983.

ITR - 37 Valves Rev. 0, RLCA, February 23, 1983 ITR'- 38 Status Report on Construction equality Assurance Evaluation of Hismer 5 Becker Rev.

0,

SHEC, March 1, 1983 ITR - 38 Final Report on Construction equality Assurance Evaluation of Hismer 5 Becker Rev. l; SHEC, March 16, 1983

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ITP, - 39 Soils - Intake Structure Bearing Capacity and Lateral Earth Pressure Rev. 0, RLCA, February 25, 1983 ITR - 40 Soils Report - Intake Structure Sliding Resistance Rev.

0, RLCA March 9, 1983

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