ML19209A336

Affidavit of Ew Edwards Re Intervenor Coalition for Safe Power Contention 20 & Intervenor Consolidated Intervenors Contention 11.Prof Qualifications Encl

ML19209A336
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	08/27/1979
From:	Edwards E BECHTEL GROUP, INC.
To:
Shared Package
ML19209A316	List: ML19209A315 ML19209A317 ML19209A318 ML19209A319 ML19209A321 ML19209A322 ML19209A323 ML19209A328 ML19209A336 ML19209A341 ML19209A347 ML19209A349 ML19209A353 ML19209A358 ML19209A363
References
TAC-07551, TAC-11299, TAC-7551, NUDOCS 7910030619
Download: ML19209A336 (7)

Text

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of

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PORTLAND GENERAL ELECTRIC COMPANY,)

Docke t No. 50-344 et al.

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(Control Building

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Proceeding)

(Trojan Nuclear Plant)

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AFFIDAVIT OF E. W.

EDWARDS COALITION FOR SAFE POWER'S CONTENTION NO. 20 and CONSOLIDATED INTERVENORS' CONTENTION NO. 11 1.

My name is E. W.

Edward s.

I am employed by Bechtel Power Corporation (Bechtel) as Field Contruction Manager in the San Francisco Power Division.

I have been employed in this position since 1977.

My professional qualifications are contained in an attachment to this affidavit.

This affidavit was prepared by me or under my supervision.

2.

I have been involved in the Trojan Plant modification work since May 1978.

My duties have included responsibility for construction planning, which has consisted of constructi-bility reviews of engineering design, conceptual development of construction methods, scheduling of work sequences and planning of construction activities with Portland General Electric Company (PGE) personnel.

3.

The purpose of this affidavit is to address, in part, Coalition for Safe Power's Contention No. 20 and Consolidated In te rv e no rs ' Contention No. 11, which, as combined, read:

Inadequate assessment of the ef fects of drilling in the control building walls during modification, has been made.

B0-2 7910 030 d /ff' 1086 060

CFSP #20 and CI #11 Page 2 of 5 E.

W.

Edwards 4.

This affidavit will explain how the drilling in the Control Building walls will be carried out to avoid damage to the reinforcing steel in the walls and to equip-ment attached or adjacent to the walls.

The affidavit of Dr. William H.

White concerning these contentions dis-cusses the effect of drilling upon the shear capacity of the walls.

5.

In the performance of the modification work, it is necessary to drill into existing walls in the Control Building for two purposes:

(a)

Holes must be drilled through the Control Building west (R line) wall from el. 59' to el. 98' so that the 3-inch thick steel plate can be bolted to that wall; thr' ugh the west (R line) wall from el. 45' to el. 61' so that nea concrete can be bolted to the existing wall; and through the Control Building east (N line) wall from el. 77' to el.

95', so that the new concrete wall on N line can be bolted to the existing wall.

(b)

Holes must be drilled into, but not through, existing walls in the Control Building so that reinforcing steel can be placed and grouted.

This is necessary to tie the new walls at Column lines N,

N' and R into the exist-ing walls.

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4 CFSP #20 and CI #11 Page 3 of 5 E.

W.

Edwards 6.

The walls where drilling will take place are either composite shear walls (masonry block and concrete core) or double block shear walls (with no cor.erete core).

Reinforcing steel in the masonry block portions of either type of shear wall is located within some of the block cells in a uniform pattern.

This steel will be avoided during drilling by a physical survey of the joints between the masonry blocks and by the use of metal detectors.

7.

The location of the reinforcing steel in the concrete core portion of the composite walls cannot be similarly de-fined.

However, since the core reinforcing steel is spaced at regular intervals, its location can be estimated for pur-poses of avoiding it during drilling.

8.

In any event, if reinforcing steel were to be encount-ered by the drill, the effect would be limited to some polish-ing, or at most, a nick in the steel.

All drilling will be done with a core drill equipped with diamond tipped bits.

These drills will penetrate the wall at a very slow speed (it will take approximately one hour to penetrate a 32-inch wall).

If the bit were to encounter reinforcing steel, there are a number of different indications.that would make it immediately apparent to the drill operator, including markedly different sound, vibrations, and motor load.

The re u po n, the drill oper-ator will immediately discontinue drilling before the steel has been harmed, the hole will be abandoned and fully grouted before a replacement hole is drilled.

The location of future holes to be drilled will be adjusted accordingly.

9.

The drilling will be carried out so that the equipment attached or adjacent to either side of the Control Building 1086 062

CFSP #20 and CI #11 Page 4 of 5 E.

W.

Edwards walls will not be affected.

Befme any drilling begins, physical surveys will be done to fix the location of all equipment attached directly to, or adjacent to, the walls in the vicinity of drilling.

The holes to be drilled will be plotted so as to allow for sufficient space for fitting the washer (which has a radius of 9 inches and thickness of 2 inches) onto the bolt; thus all holes must be centered at least 9 inches from any equipment attached to the wall and must be located such that there is a gap greater than 2 inches between the wall and any piece of adjacent equipment.

10.

Such distances should preclude the drilling from con-tacting any equipment attached to or adjacent to the wall.

However, as an additional precaution, workers will be assigned to monitor the area opposite the drill penetration.

These workers will be in direct communication with the drill operator and can notify him to stop drilling if equipment might be af-fected.

The drilling machinery uses a geared mechanism to move the drill head forward.

The inherent characteristics of this mechanism are such that it retains no potential energy; therefore there is no release of energy which could suddenly propel the drill head forward when the the wall is penetrated.

Because of the drill's slow penetration speed, and the positive control which the drill operator has over the bit, a warning f rom the worker monitoring the area opposite the drill pene-tration will be sufficient to prevent harm to equipment adja-cent to the wall from the drill bit.

11.

The diamond-tipped drills to be used will cut slowly and cleanly through the concrete.

Therefore, vibration and BO-2 1086 063

CFSP #20 and CI #11 Page 5 of 5 E.

W.

Edwards concrete fragments from the drilling on either side of the wall will be minimal and will not affect equipment attached or adjacent to the walls.

12.

For the reasons discussed above, the drilling neces-sary for the modification work will not harm the reinforcing steel in the walls and will not affect equipment attached or adjacent to those walls.

I, E.

W.

Edwards, of lawful age, being first duly sworn, state that I have reviewed the foregoing affidavit, and that the statemencs contained therein are true and correct to the best of my knowledge and belief.

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E.

W.

EDWARDS STATE OF CALIFORNIA

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County offA,o FRAucne o ))

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TH SUBSCRIBED AND SWORN TO before me this D day of bV D U W 1979 NOTARY PUBLIC FOR { sLIFORNIA My Commission Expires OFFICIAL SEAL FNm RORGMAN s

NOTARv Du?UC CAUFC ANIA S AN F?* NAM COUNTY

.'y tor'im, exp re? ICT 2.1973 P.

BO-2 1086 064

PROFESSIONAL QUALIFICATIONS OF E DWIN W. EDWARDS PRESENT Field Construction Manager, Bechtel Power Corporation EDUCATION B.S.,

Electrical Engineering, University of Oklahoma, Norman M.B.A. General Management - Golden Gate University of San Francisco PROFESSIONAL Registered Professional Electrical Engineer, DATA California, Florida, New York

SUMMARY

2 years:

Field Construction Manager 1 year:

Cost / Schedule Supervisor 2 years:

Assistant Field Construction Manager 3 years:

Project Superintendent 2 years:

Field Superintendent 2 years:

Project Superintendent 1 year:

Senior Field Engineer 6 years:

Field Engineer, Electrical EXPERIENC E Mr. Edwards is a Field Construction Manager assigned to the Trojan and Skagit projects.

Before being assigned to his present position, Mr. Edwards was Cost / Schedule Supervisor for the Pebble Springs Nuclear Plant.

Previously, he was Assistant Field Construction Manager at the Trojan Nuclear Power Plant.

This assignment was during preparation for initial operation of the plant.

As Project Superintendent he was fully in charge of the construction effort at the Gerald Andrus Steam Electric Station in Greenville, Miss.

Prior to this assignment Mr. Edwards was Field Superintendent at Unit 2 of the Baxter Wilson Steam Electric Station, Vicksburg, Miss. and Montville Unit 6, Montville, Conn.

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Edwin W. Edwards EXPERIENCE (Concluded)

Mr. Edwards was Project Superintendent managing various contractors in construction of gas tur-bine f acilities at the Missouri Avenue Station, Atlantic City, N.J.

As field engineer, electrical and senior field engineer, Mr. Edwards worked on Cocoa Unit 1 and Turkey Point Units 1 and 2 at Cocoa and Florida City, Florida resnectively.

With a previous employer, Reynol6s Electric and Engineering, Mr. Edwards worked as a Field Engineer, electrical on the Titan I Missile bases, Rapid City, S.D.

ar.d at the Nevada Test Site, Mercury, Nevada.

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