ML19329D540
| ML19329D540 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 01/18/1973 |
| From: | Schwencer A US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Rodgers J FLORIDA POWER CORP. |
| References | |
| NUDOCS 8003160139 | |
| Download: ML19329D540 (3) | |
Text
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RP Reading HJFaulkner i PWR-4 Reading EGoulbourne (2) SHHanauer l Docket No. 50-302 JAN 151973 RSBoyd RCDeYoung i l DSkovholt FSchroeder RRMaccary Florida Power Corporation DKnuth ATTN: Mr. J. T. Badgere RTedesco Assistemt Moe Freefdent ad HDenton V ; Kg.f _ m.P N eet' Meneger -EWR Branch' Chiefs lg g F. 9. Bos 14442 o hd r
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~ St. Petereburg, Florida 33733; M y + u, q m ,s. , 1 '. I' Centleasa: h N , 9.g 4 -- u- .+; ~ L. c; m .The emeleoed Errata sheet for "Someral laformatism Required.for , 4,gf:...., M jM. 'Comaideraties of the Effecte of s' Piping System trank Outside ft L w.MflC Centat====t" emendo ser letter to you of M ember 15, 1972. - le This letter someermed the potential effo a af steenline breake in the Crystal River Unit 3. ~ wV,#- ,;,e &,. a,m, #u .3 + a LF1a=== eestaat as if yee desire A4====sion er alarifiestiam of'this ~ *W.';fdMD meterial. -..n x. W k-vlu.+::' W MB' M WWQ2,&}Q ^ c 'y . ~. ..r.
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't s ERRATA SHEET FOR " GENERAL INFORMATION Rc0UIRED FOR CONSIDERATION OF THE EFFECTS OF A PIPING SYSTEM BREAK OUTSIDE CONTAINMENT" The following lists the changes that have evolved on our initial information request: 1. Page 2, Item 2--Insert the following in 2. to precede the existing first sentence: " Design basis break locations should he selected in accordance with the following pipe whip protection criteria; however, where pipes carrying high energy fluid are routed in the vicinity of structures and systems necessary for safe shutdown of the nuclear plant, supplemental protection (f those structures and systems shall be provided to cope with the environ-mental effects (including the effects of jet impingement) of a single postulated open crack at the most adverse location (s) with regard to those essential structures and systems, the length of the crack being chosen not to exceed the critical crack size. The critical crack size is taken to be 1/2 the pipe diameter in' length and 1/2 the wall thickness in width." 2. Page 2, Item 2(a)(2)--Change nomenclature to read "any intermediate locations between terminal ends where the primary plus secondary stress intenaities Sn... " (h A}' 3. Page 4, Item 2. (b)(2)--Change 0.9 (Sh+8} A 4. Page 6, Item 7 --Add " structural" to read ' "The structural design loads..." .S. Page 7, Item 11. (a)--Add " required" so as to read, " Loss of required - redundancy..." 6. Page 7, Item ll. (a)--Delete "the steam line break" and replace with "that" to' read "...the consequences of that accident..." 7. Page S, Item 11.(b},-- Replace (b) with the following: (b) " Environmentally induced failures caused by a leak or rupture of the pipe which would not of itself result in protective action but does disable protection functions. In this regard, a loss of redundancy is petmitted but a ' loss of function is not permitted. For such situations plant shutdown is required." -,w.}}