ML19343B222
| ML19343B222 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 10/27/1980 |
| From: | Oprea G HOUSTON LIGHTING & POWER CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| IEB-79-03A, IEB-79-3A, ST-HL-AE-567, NUDOCS 8012160299 | |
| Download: ML19343B222 (2) | |
Text
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If 0 D/in bi i Ot October 27, 1980 ST-HL-AE-567 m... y.,
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SFN:
V-0540 Mr. Karl Seyfrit Director, Region IV lluclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012
REFERENCES:
ST-HL-AE-460 (5-8-80)
ST-HL-AE-503 (8-5-80)
ST-HL-AE-510 (8-6-80)
Dear Mr. Seyfrit:
South Texas Project Units 1&2 Docket Nos.
STN 50-498, STN 50-499 IE Bulletin No.79-03A i
l Bulletin No.79-03A, received April 7,1980, hcs been reviewed by Houston Lighting & Power Company.
As requested by the Bulletin, the South Texas Project design has been examined to determine those areas where the pressure-related design stresses exceed 85 percent of the ASME Code allowable stresses for SA-312 or A-312, Type 300 Series fusion welded pipe.
Note that, as stipulated in a discussion with NRC Region IV on August 5,1980, the evaluation was limited to those piping design stresses which are associated with pressure.
The review determined that some pieces of equipment are affected under the terms of this Bulletin.
The items are:
- 1) Cation Bed Demineralizers (Unit 2 only) l
- 2) Mixed Bed Demineralizers (Unit 2 only) l
- 3) Thermal Regeneration Demineralizers I
(Unit 2 only) 1
- 4) Recycle Evaporator Feed Demineralizers (Unit 2 only)
- 5) Recycle Evaporator Condensate Demineralizers (Units 1 and 2) 80 l
12160 29
Houston Lighting & Power Company October 27, 1980 ST-HL-AE-567 SFN: V-0540 Page 2 4
Unit 1 is not included in items 1 through 4 because the material and fabri-cation technique are different from those covered by the Bulletin.
The affected equipment was manufactured by Westinghouse and is part of the Chemical and Volume Control System (CVCS).
The only components that are affected by this Bulletin are the cylindrical portions of the demineralizer shells.
The design pressure / temperature requirements are given on the attached table.
The heads of the demineralizer shells have been attached; therefore, under the terms of item 3 of the Bulletin, the resulting lack of accessibility precludes etching of the cylinder welds to determine the degree of lack of centerline weld penetration.
If there are any questions, please contact Mr. Michael E. Powell at (713) 676-8592.
Very truly u rs,
t re,
Exec tive ' ce President t
PLW/pjb Attachment l
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i Houston Ughting & Power Compam October 27, 1980 ST-HL-AE-567 SFN: V-0540 Page 3 cc:
Director, Division of Reactor Construction Inspection NRC Office of Inspection and Enforcement M. D. Schwarz (Baker & Botts)
R. Gordon Gooch (Baker & Botts)
J. R. Newman (Lowenstein, Newman, Reis, Axelrad, and Toll)'
J. H. Goldberg D. G. Barker A. J. Granger i
R. A. Frazar i
G. B. Painter R. L. Waldrop H. R. Dean Howard Pyle R. L. Ulrey 4
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ATTACHMENT i
Desion Design Demineralizer Pressure (psig)
Temoerature (oF)
Cation Bed 300 200
]
Mixed Bed 300 200 Thermal Regeneration 300 250 Recycle Evaporator Feed 300 200 Recycle Evaporator Condensate 300 250 1
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