ML19262B078
| ML19262B078 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 11/16/1979 |
| From: | Shannon R COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML19262B069 | List: |
| References | |
| NUDOCS 7912110525 | |
| Download: ML19262B078 (4) | |
Text
s a
UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION DEFORE THE ATOMIC SAFETY AND LICENSING BOARD IN TIIE MATTER OF
)
)
COMMONWEALTH EDISON COMPANY
)
Docket Nos. 50-295
)
50-304 (Zion Station Units 1 and 2)
)
)
Proposed Amendments to
)
Increase Spent Fuel Storage
)
Capacity (43 F.R.
30938)
)
AFFIDAVIT OF ROBERT SHANNON I, ROBERT SHANNON, of lawful age, being first duly sworn, upon my oath certify that the statements contained in the attached pages and acco.ganying exhibits are true and correct to the best of my knowledge and belief.
W SUBSCRIBED AND SWORN TO 1;efore me this 5 day of Novembar.,1979.
p
/ /
p_*/
'/ - <
Notary Public My commission expires '
19 1532 220 7912110 S h t
AFFIDAVIT OF ROBERT E.
SIIANNON My name is ROBERT E.
SHANNON.
Since 1973 I have been employed by Commonwealth Edison Company; since 1976 as the Inservice Inspection Coordinator at Zion Station.
I hold a B.S.
in Metallurgical Engineering from Purdue University and an M.S.
in Materials Science from Northwestern University.
In add.ition, I have been certified to conduct visual inspections in accordance with the Standards of the American Society of Non-Destructive Testing.
In response to the Board's concerns and requests from the Station Nuclear Engineering Department of Commonwealth Edison Company, personnel under my supervision have performed inspections in accordance with I.E.Bulletin 79-17 on the spent fuel cooling system.
These inspections have included ultrasonic, dye-penetrant and visual examinations with the purpose of detecting evidence of stress corrosion cracking in the austenitic stainless steel piping that makes up this system.
I performed visual examinations of the accessible portions of the spent fuel cooling piping in accordance with Commonwealth Edison's Visual Examination Procedure NDT-VI which meets the requirements of ASME Section XI as required by the Bulletin.
1532 221
In performing the examination, I employed a Direct Visual Examination technique which provides that the eye is within 2t inches of the piping welds.
Additionally, I performed the examinations with more than adequate lighting.
I specifically looked for any evidence of the borated water leaking from the piping in welded areas. Such evidence would include, for example, water puddles on the floor or moisture on the piping. Additionally, I looked for a build-up cf white boric acid crystal deposits which typically accumulate if leakage has previously occurred in borated water systems.
I also looked for visually observable cracks or crack-like lines, and for evidence of corrosion in crack-like lines.
I found no evidence of stress-corrosion cracking as a result of these v1.ual e:caminations.
Some unexpected discoloration was observed on a few of the piping base material areas.
It was removed with a stainless steel wire brush and I determined it to be superficial rust.
Based on my training and experience, I do not consider this as evidence of stress corrosion cracking or any degradation of the pipe integrity.
The ultrasonic and dye-penetrant examinations have also been performed as required by the Bulletin on a 10%
sample of the accessible welds in the spent fuel pool piping.
We found no evidence of stress corrosion cracking.
1532 222 It is likely that by performing this inspection program, any significant stress corrosion cracking of the spent fuel cooling piping system would have been detected.
1532 223