ML19322A628
| ML19322A628 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/27/1971 |
| From: | Seidle W US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Henderson J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML19322A606 | List: |
| References | |
| NUDOCS 7911210699 | |
| Download: ML19322A628 (3) | |
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7911210 N f
(m J. 3. Henderson Xay 27, 1971 3.
In an inspection on Septe=ber 28 - Cet:ber 2, 1970,./ C. E. Murphy, Reactor Inspector, discussed the need to Observe cable tray rcuting and tray fill limits vish C. 3. Ayecek, Field Engineer, Electrical.
At that time, only a very few saft.t/-related cables had teen installed.
Aycock was advised at that time that C: ;11ance vould 20.e a elese in-spection of this feature.
4 7ne cable and tray installaticn van discussed vi.h the licensee durir,g inspections conducted en @ t:ber 26-23, 1970,2/ 7,3c3 3 37 ;_,,, 197c,;j
+
sad en January 5-8, 1971.1' A cen.:tr =tien deficiency notice v a issued at the conclusien of tha inspection en C :cber 26-25, 19~0.1 Ihis OLN questioned the adequacy cf the cable and tray design re fiev.
The inspector again expressed cen:arn abcut the ader,ua:7 of desigr.
re'rievs in discussicas with C.
- 1. irlie, Cuhe's Princi;al Electrical Ingineer, during the inceection :.:, anus.ry. Wylie implied at that time that smother review vculd
- .e.: ale and agreed that additienc1 trays vould be installed tc sur;rt and protect the cable.
5 Insufficient dete.is of the uccis alluded tc in the licensee's recponse are given to subst:ntiate the licensee's clai that cvar-nesting vill act be a probles.
6.
Insufficient details are given in the li:ensee's respense to sup;cr the licensee's statement that physical overicading is not a prcble=,
7.
The statement that "The s.ddi:1cn of cables in the everfilled trc/c has been stopped and additional cabic trays have been adden where necessary and practical" is c biguous and risles. ding. Tr27s have nct teen added at many places where the everfill ;r:ble: exists. Overfilling should have been stopped nuc' aa 'ier to te effective since essen.1 ally all of the cable for Unit 1 has nov been incialled.
8.
The addition of,rsy rails, tea,4-e y, could pu. :he licencee in conformance with the FSAR but in a fev osses vould result in a ton since the cable in sc e tracts a: e filled n; to the point cf alt:st rea:hing the tra/ above. Additien cf higher trsct rails vculd net solve the'proble: but veuld result in an inferior installation since
, air circulatica veuld be reduced. Vertical separation of trays at present is only five inches.
9 Che require ent of the FSAR is not being re:. 7ais fact overrides.the other censideratiens. It is the c;inien of Region II that the pri=ar/-
- / CO Repcrt No. 50-269/70-10 UC0 Report No. 50-269/70-11 t/
1 00 Report No. 269/70-12
.,/
' 1 00 Report No. 50-269/71-1 I CON dated November.25,1970
y J. 3. Hendersen May 27, 1971 reascn for the violaticn is that design reviews were inadequate even though the licensee was cautiened abcut the possibility of the problem.
Duke's response regar:iing the veliing red contrcl is considered to be un-satisfactory. Tne reasons for this position are as folleva:
1.
Se centrol of red had been discussed with the licensee by C. E.
Murphy, Reactor Inspector, on three succeeding incpections. Each time the licensee inferred that steps vculd be taken to 1: prove contrci.
Se inspector for Units 2 and 3 hai also diccussed velding red centrol with the licensee and had teen told that steps vould be taken *o cor-rect the problem.
2.
2ecause of the lack of centrol in recent conths, tha licensee cannot identify with any degree of certc_inty the source of the reds used in any velds.
If, at a later date, a particular heat of veli rods is found to be defective, then the licensee vill be unable to identiff the velds in which the red vas u;ed. Se identity cf the red in a system cust be considered to te ac important as the identity of the pipe in the system.
,lf V~ %
l W. C. Seidles CO: I:CEM Senicr Reacter Inspecter
Enclosure:
Ltr to Davis fr. S ies dtd 5/13/71 cc w/ encl:
A. Giambusso, CC:HQ
- 1. Ko: nblith, Jr., 00:EQ R. E. Ingelken, CO:EQ a'.
- 3.. C 9 3..e.i i.f, C^. U. A, d
o..
C. E. Murphy, CO:II "o
s e
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