ML13324A895
| ML13324A895 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 05/31/1986 |
| From: | ABB IMPELL CORP. (FORMERLY IMPELL CORP.) |
| To: | |
| Shared Package | |
| ML13324A893 | List: |
| References | |
| 01-0310-1385, 01-0310-1385-R02, 1-310-1385, 1-310-1385-R2, NUDOCS 8606230434 | |
| Download: ML13324A895 (2) | |
Text
ENCLOSURE 3 SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1 LONG TERM SERVICE PROGRAM REVIEW AND DEVELOPMENT OF SMALL BORE PIPING AND TUBING CRITERIA Prepared for:
Southern California Edison Prepared by:
Impell Corporation Impell Report No. 01-0310-1385 Revision 2 8606230434 60619
- May, 1986 PDR AD0CK 05000206 P
No. 69-05, Rev.
2 11.2 Piping may be qualified by the strain criteria above, provided that the following constraints are observed:
(1) In calculating the intensified primary stress de, at least 50%
of d4 is due to earthquake loading.
(2) In calculating moments due to earthquakes, a response spectrum method is used, with damping not exceeding that specified in Code Case N-411 (PVRC recommendations).
(3) Diameter/wall thickness ratio (Do/t) does not exceed 50.
(4) Materials are like SA106 Grades A, 8, C or like SA312 Type 304.
(No quenched and tempered ferritic steels or cold worked austenitic stainless steels.)
(5) Joints are butt welded or girth fillet welded. (No threaded, seal-welded threaded, or bolted-flanged joints.)
(6) Seismic anchor movements are adequately considered.
(7) The cumulative usage factor due to MHE does not exceed 1/4.
(8) Option 1 (0.2-R) and Option 2 (Markl's Correlation) is satisfied for stainless steel > 1%.
(9) 0.75 is never below 1.0.
- h A-28