ML20237K053
| ML20237K053 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/14/1987 |
| From: | Williams N CYGNA ENERGY SERVICES |
| To: | |
| References | |
| CON-84056 NUDOCS 8709040172 | |
| Download: ML20237K053 (3) | |
Text
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CES Telecon Conference Report Project-TV Eleciric J b No-84056 l
8/14/87 Conduit Support Design Review 11:00 a.m.
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Place:
New York, NY l
Ebasco Audit Participants-i H. S. Yu Ebasco B. Shakibnia Cygna I
i Required item Comments Action By i
Substitution of Next Heavier Structural Member (RIL Issue 17)
Ebasco stated that Calculation SPAN-1189 and SUPT-0247 address the substitution for. tube steel only.
For open section structural members, the actual size will be verified during walkdowns or the Inaccessible Attributes Procedure will be followed.
In Calculation SUPT-0247, all supports are checked for the effect of next heavier member substitution (based on f(new)/f(minimum) support frequency and stress interaction ratios). Those supports that fail the minimum support frequency or stress interaction ratio requirements, are further investigated in Calculation SPAN-1:?9, using two degree coupled system and relaxed "g" values for supports.
Cygna is to :omplete the review of the above mentioned calculation during the next audit.
Embedded Conduits In response to Cygna's question (raised during the July 8709040172 870814 PDR ADOCH 05000445 PDR 1
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lIl11111111111111111!!ll111111 Requwed item Comments Action By 22, 1987 audit) on applicability of allowable bond stress l
equations to bar sizes greater than #18 bar, Ebasco provided a plot of development lerath (
d) vs. bar diameter (D), comparing the 1963 and 1971 codes. On this basis it can be concluded that the 1963 code is more conservative.
Cygna stated that the issue of applicability of allowable bond stress equations is still not addressed.
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See Attached Distribution Sheet.
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DISTRIBUTION LIST Mr. J.
Redding Mr.
L.
Nace Mr. W.
Counsil Mr.
D, Pigott Ms. A.
Vietti-Cook Mr n. C'.o Grime s:1 l
Mr.
E.
Siskin Ms. N. Williams Mr.
J.
Russ Mr. W.
Horstman Mr.
K.
Parikh Mr.
B.
Atalay Ms. D.
Leong Mr.
B.
Shakibinia Project File
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