ML20082G702
| ML20082G702 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 11/23/1983 |
| From: | PACIFIC GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20082G685 | List: |
| References | |
| NUDOCS 8311300303 | |
| Download: ML20082G702 (10) | |
Text
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Pacific Gas and Electric Company Semimonthly Status Report No. 50 Diablo Canyon Verification Program November 23, 1983
SUMMARY
This is PGandE's fiftieth Semimonthly Status Report which summarizes the progress of the design verification program from November 8,1983, through November 21, 1983. Since IDVP activities are complete, this report discusses only PGandE's Internal Technical Program activities.
PGandE's Internal Technical Program has identified a total of 42 open items to date. Thirty-eight of the 42 open items have been closed by PGandE.
This report no longer presents status for Step 1.
In accordance with Commission authorization on November 8,1983, PGandE has completed fuel loading.
1-8311300303 831123 PDR ADOCK 05000275 R
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 area indicated.
A.
Containment and Internals Confirmatory analysis of the containment annulus structure is nearly complete.
B.
Auxiliary Building Verification of platform structures and auxiliary building verification for non-seismic loads is in progress.
C.
Fuel Handling Building Engineering for the Unit 1 fuel handling building is complete..
D.
Turbine Building Engineering for Unit 1 turbine building is complete, E.
Intake Structure Engineering for the intake structure is complete.
l F.
Pipe Rupturo Restraints l
l The pipe rupture restraint design review is complete.
Restraint l
modifications are currently being issued.
Evaluation for restraints I
with pipe hanger loads is nearly complete. The test program for split wedge nuts and couplings has been completed.
l The testing of rod ductility (0I-42) inside and outside containment I
has been completed. As a result, re-annealing of some straight rods L
outside containment is in progress. Split wedge nut installation inside containment is complete with installation outside containment l
in progress.
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 l
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 l
as-built conditions with the present designs. t
H.
Equipment Seismic Design Review 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 4,1983.
The review is now being updated as necessary, to incorporate the latest loads, spectra, and as-built information.
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 and tested to meet design requirements using the latest spectra.
I.
Electrical Raceway Supports i
j Electrical raceway support reverification work is complete.
1 J.
HVAC Ducts and Supports l
HVAC duct and support work outside containment related to Step 3 is in progress.
K.
Instrumentation Tubing and Tubing Supports All engineering associated with instrumentation tubing and tubing supports is complete.
Final documentation is in progress. __
II.
Open Item Status To date, a total of 42 open items (OIs) have been identified by the PGandE Internal Technical Program (Attachment I). Thirty-eight of these open items have been closed by PGandE.
The status of the remaining four open items is presented in Attachment I.
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Diablo Cany je Manager /
TABLE 1 STATUS OF PLANT MODIFICATIONS f
(As of November 18, 1983)
STEP 2 Low Power Testin,g I.
INSIDE CONTAINMENT A.
Large Bore Pipe Supports Total Forecast None Design Release Construction Complete B.
Small Bore Supports Total Forecast None Design Release Construction Complete C.
HVAC Supports Total Forecast 8
Design Release 8
Construction Complete 8
D.
Raceway Supports Total Forecast None Design Release Construction Complete l
E.
Annulus Steel Connections Total Forecast 98 Design Release 98 Construction Complete 46 l
F.
Platform Connections l
Total Forecast Asign Release Construction Complete G.
Dome Service Crane Design Release 100%
Construction Complete 0%
Included with annulus.
1
1 TABLE 1 (Cont'd)
STATUS OF PLANT MODIFICATIONS (As of November 18, 1983)
STEP 2 l
Low Power Testing II. OUTSIDE CONTAINMENT A.
Large Bore Pipe Supports Total Forecast 1188 Design Release 1188 i
Construction Complete 1111 i
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 l
Construction Complete f
E.
Fuel Handling Building Connections Total Forecast None Design Release Construction Complete F.
Hot Shop Steel Connections Total Forecast None Design Release Construction Complete l
G.
Equipment Modifications Design Release None Construction Complete l
l
1 TABLE 1 (Cont'd)
STATUS OF PLANT MODIFICATIONS
( As of November 18, 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 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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ATTACINENT I OPEN ITEMS LEGEND Asterisk denotes item with revisions this reporting period.
1.
TASK: The number assigned by PGandE for tracking.
2.
INITIATING DOCUMENT: The document which first identified the open item to the IDVP.
3.
IDENT DATE: The date the problem was identified (year-month-day).
4.
ECD:
Estimated completion date.
l l
l
a Attachment I Page 1 STATUS OF PGendt OPEN ITER $
l CONCLUSIVE REFERENCE TO ERROR R
5 N001FI '
INITIATING IDENT STATUS STATERENT ITP PHASE I CLASS ANALYSIS CATIONS gg, 30CUIIENT
.MTE.[it DESCRIPTION RESCRIPT 10N OF RESOLUTION OF RESOLUTION FINAL REPORT PER 19VP C1P9PLETE COMPLETE 70141* Seelmonthly 92030, 840101 PG&E Open Itse:
The done service trane has The done service Section A
100 0
4 5tatus Report The selsmic analysis of the been reanalyzed, using crane has been 2.1.1.5 No, g containment done service crane input from the polar crane reanalyzed. The Open Ites 20 ott11 red some results of the analysis. This is not a modification 30 nonlinear polar crane fuel load Stee since the drawings have analysts.
crane will be tied down been issued. loork and inoperable during is scheduled fuel load. Modifications for completion have been designed and approximately construction is in 30 days after progress.
fuel loading 1s finished.
70344* Seelsenthly 830412 840101 Two radiation r-A1 tors for the Instrumentation needs New instrument A
100 0
5tatus Report fuel hand 11ag bu11 ding ventil-to be seismically qua11-loops that No. 36 atton systes do not fully comply fled, and wiring needs comply with Open Iteet 30 with Regulatory Guide 1.52, to be separated Regulatory Guide to comply with the 1.52 will be regulatory gulde.
Installed.
70364* Seeinenthly 030627 831130 A review of all safety-related The review of all safety-Class I backup A
100 g5 Status Report air-operated valves identified related air-operated air supply is No. 41 f our (F CV-364.-365,-602, and valves has been completed. being added for Open Itse 40
-603) which do not entirely Modifications for the four valves, satisfy functional criteria, four valves will be Specifically, upon loss of performed.
Instrument air, the valves should fall 'in position' and be operable for a limited time.
70314* Sen1 monthly 830,21 840115 The ongoing Internal Technical Engineering is casolete A
gg 30 5tatus Report Review Program evaluated the for hem nut concern; field No. 47 rupture restraints stainless modifications are being Open Ites 42 steel red end connection design made. Engineering for to verify the adequacy of the ductility concern is cem-double hez nuts. Testing per-plete for Unit 1 inside formed Indicated premature containment; investigation stripping of threads at eed 15 continuing for other connections before reaching areas.
the required design energy.
In addition these test results identifled several rods from Unit 2 that exhibit ductility lower than design requirements.
It has been confirmed that i
rods free the same heats are installed in Unit 1.
016sL/0152P-1