ML20082T922

Semimonthly Rept 51:Diablo Canyon Verification Program

ML20082T922
Person / Time
Site:	Diablo Canyon
Issue date:	12/09/1983
From:	PACIFIC GAS & ELECTRIC CO.
To:
Shared Package
ML20082T919	List: ML20082T917 ML20082T922
References
0003L-0005P, 3L-5P, NUDOCS 8312160179
Download: ML20082T922 (8)

Text

m Pacific Gas and Electric Company Semimonthly Status Report No. 51 Diablo Canyon Verification Program December 9,1983

SUMMARY

This is the fifty-first and final Semimonthly Status Report which summarizes tne design verification work completed under PGandE's Internal Technical Program (ITP) from November 22, 1983, through December 9,1983.

PGandE's Internal Technical Program has identified a total of 42 open items (0Is), of which 38 have been closed. The other four (0Is 20, 38, 40, and 42) are being processed in accordance with existing procedures as described below. All 01 files are closed. As PGandE stated in a letter dated December 1,1983, the Diablo Canyon Design Verification Program, including the Diablo Canyon Project (DCP), Internal Technical Program, is now complete.

The DCP procedures which were established to define the specific methods for interfacing with the IDVP and for addressing ITP open items will now be superseded by existing DCP procedures. The engineering analyses of the four remaining ITP open items have been completed and the modifications have been identified. These modifications will be implemented as required. However, the status of these four items will now be formally tracked and documented pursuant to Project procedures.

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STATUS OF INTERNAL TECHNICAL PROGRAM This section describes the status of work in PGandE's Internal Technical Program.

The status of plant modifications is provided in Table 1. A discussion of the progress of engineering and construction activities is also provided.

I. Status of Internal Technical Program The discussions below summarize the status of work for each arca indicated.

A. Containment and Internals Confirmatory analysis of the containment annulus structure will be completed prior to Step 2.

B. Auxiliary Building Verification of platform structures and auxiliary building verification for non-seismic loads is in progress. This work will be completed prior to Step 2 and will be documented in accordance with Project procedures.

C. Fuel Handling Building Engineering for the Unit 1 fuel handling building is complete.

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! D. Turbine Building 4 Engineering for Unit 1 turbine building is complete.

i E. Intake Structure

Engineering for the intake structure-is complete.

. F. Pipe Rupture Restraints 4 ,

t The pipe rupture restraint analysis is complete. Restraint modifications have been issued.

G. Piping and Pipe Supports The stress analysis work for large bore piping and large bore pipe support design is complete with the exception of reconciliation of as-built conditions with the present designs.

The stress analysis work for small bore piping and small bore pipe support design is complete with the exception of reconciliation of as-built conditions with the present designs.

H. Equipment Seismic Design Review

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1. Mechanical Equipment The seismic design review for all Design Class I mechanical equipment within the PGandE design scope has been completed ,

based on nozzle loads and spectra available November 30, 1983.

The review is now being updated as necessary, to incorporate the latest loads, spectra, and as-built information. This work will

be completed prior to Step 2 and the results will be documented according to Project procedures.

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2. Electrical Equipment and Instrumentation All PGandE scope reviews of electrical equipment are complete.

Minor rechecking for the latest turbine and auxiliary building spectra is complete.

3. Heating, Ventilating, and Air Conditioning Equipment All Design Class I HVAC equipment has been analyzed or tested to meet design requirements using the latest spectra.

I. Electrical Raceway Supports Electrical raceway support reverification work is complete.

J. HVAC Ducts and Supports HVAC duct and support engineering work outside containment related to Step 3 is in progress. This work will be completed and documented according to Project procedures prior to Step 3.

K. Instrumentation Tubing and Tubing Supports

All engineering associated with instrumentation tubing and tubing supports is complete. Final documentation is in progress.

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TABLE 1 STATUS OF PLANT MODIFICATIONS

( As of December 5,1983)

STEP 2 I. INSIDE CONTAINMENT Low Power Testing A. Large Bore Pipe Supports Total Forecast None Design Release Construction Complete B. Small Bore Supports Total Forecast None Design Release Coiistruction Complete C. HVAC Supports Total Forecast 8 Design Release 8 Construction Complete 8 D. Raceway Supports Total Forecast None Design Release Construction Complete E. Annulus Steel Connections Total Forecast 129 Design Release 129 Construction Complete 102 F. Platform Connections Total Forecast Design Release Construction Complete G. Dome Service Crane Design Release 100%

Construction Complete 0%

• Included with annulus.

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II. Open Item Status A total of 42 open items (0Is) were identified by the Internal Technical Program. All OI files are closed.

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Diablo Canyon Project Manager l l

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TABLE 1 (Cont'd)

STATUS OF PLANT MODIFICATIONS

( As of December 5,1983)

STEP 2 II. OUTSIDE CONTAINMENT Low Power Testing A. Large Bore Pipe Supports Total Forecast 1233 Design Release 1233 Construction Complete 1062 B. Small Bore Supports Total Forecast 255 Design Release 255 Construction Complete 251 C. HVAC Supports Total Forecast None Design Release Construction Complete D. Raceway Supports Total Forecast None Design Release Construction Complete E. Fuel Handling Building Connections Total Forecast None Design Release Construction Complete F. Hot Shop Steel Connections Total Forecast None Design Release Construction Complete G. Eq9ipment Modifications Design Release None Construction Complete H. Foundation for CCW Pumps Complete *

• Modifications required for' Step 1 were completed November 8,1983.

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TABLE 1 (Cont'd)

STATUS OF PLANT MODIFICATIONS

( As of December 5,1983)

NOTES:

Total Forecast: The predicted number of required modifications based on reviews and evaluations to date.

Design Release: The number (or percent) of modifications completed by engineering and released to the field for construction.

Construction Complete: The number (or percent) of modifications where the construction work is physically complete and the work is awaiting appropriate quality assurance inspection and engineering l approval of as-built conditions.

If additional plant modifications are identified for Step 3, Full Power, they will be included in this table.

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