ML19325E165
| ML19325E165 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 10/19/1989 |
| From: | Sieber J DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-89-002, IEB-89-2, NUDOCS 8911020153 | |
| Download: ML19325E165 (1) | |
Text
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., )U gegyw Powe staan shmnoport a nonao4 b
t October 19, 1989 EOhi,n,w mmmw U.
S.
Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555
Reference:
Beaver Valley Power Station, Unit NO. 1 Docket No. 50-334, License No. DPR-66 Visual Examination of SI-50 Gentlemen:
e The purpose of this letter is to document a telephone conversation between Mr. K.
D. Grada of my staff and Mr.
G. Johnson of the NRC Staff on October 11,
.989 concerning a
visual inspection of a
safety.
injection accumulator discharge check valve (SI-50).
On' October 5,
~
- 1989, inspection and maintenance was being performed on SI-50 to e
install' new retaining block studs as part of our actions to address NRC Bulletin 89-02.
The inspection was performed by an Anchor Darling Service. Representative and a
Quality Control (QC)
Inspector. 'The following items were checked during the vendor and QC inspection on the valve:
clapper arm shaft and bushings, retaining block dowel' pins and
- bushings, trunnion
- bushing, disc nut
- pin, disc nut, valve disc and
- seat, and the body to bonnet and seal plate sealing surfaces.
The valve and internals were found to be satisfactory.
An ASME Section XI Table 2500, B-M-2, VT-3 visual examination of the internal valve body was required.to be performed during maintenance on this valve as part of an alternate examination approved by NRC l
letter dated November 30, 1987.
The Quality Control Inspector and l
vendor representative were not qualified in.accordance with ASME IWA-2300 to perform a VT-3 visual examination.
Duquesne Light Company believes the intent of the alternate l
examination was met since the valve was inspected by a representative of the valve manufacturer, five. (E )'-
identical valves uere also inspected by an ASME IWA-2300 qualified inspector with satisfactory
- results, ASME Table
- 2500, B-M-2, limits the examination to one valve within each group of valves that are the same constructional design, and re-inspection will result in unnecessary radiation exposure.
If there are any questions concerning this matter, please contact my office.
Very truly.yours,.
5 i
8911020153 891019 i.
D. Sieber PDR ADOCK 05000334 i vice president D
G PNU Nuclear Group cc:
Mr..J..Beall, Sr. Resident Inspector
,gg Mr. W.
T.
Russell, NRC Region I Administrator L-Mr. P. Tam, Sr. Project Manager i
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