05000324/LER-1980-047-01, /01T-0:on 800624,while Replacing Nonqualified Splices Connecting Safety Relief Valve Solenoid Pigtails to Nuclear Grade Cable,Brittle Pigtails Discovered.Caused by Adverse Reaction to Tape Adhesive.Solenoids Replaced

/01T-0:on 800624,while Replacing Nonqualified Splices Connecting Safety Relief Valve Solenoid Pigtails to Nuclear Grade Cable,Brittle Pigtails Discovered.Caused by Adverse Reaction to Tape Adhesive.Solenoids Replaced

ML19320B518
Person / Time
Site:	Brunswick
Issue date:	07/08/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19320B515	List: 05000324/LER-1980-047, Forwards LER 80-047/01T-0 05000324/LER-1980-047-01, /01T-0:on 800624,while Replacing Nonqualified Splices Connecting Safety Relief Valve Solenoid Pigtails to Nuclear Grade Cable,Brittle Pigtails Discovered.Caused by Adverse Reaction to Tape Adhesive.Solenoids Replaced
References
LER-80-047-01T, LER-80-47-1T, NUDOCS 8007140399
Download: ML19320B518 (2)

LER-1980-047, /01T-0:on 800624,while Replacing Nonqualified Splices Connecting Safety Relief Valve Solenoid Pigtails to Nuclear Grade Cable,Brittle Pigtails Discovered.Caused by Adverse Reaction to Tape Adhesive.Solenoids Replaced

Event date:
Report date:
3241980047R01 - NRC Website

text

NHC VUHM 366

~~a~~=~~*~""~-~~*"~~

~~- ~~~=

(777)-

LICENSEE EVENT REPORT

.,p CONTROL BLOCK:

l l

l l

l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6

@ l N l C l B l E l P l 2 l@l 0 l 0 l - l 0 l 0 l 0 l 0 l 0 l-l 0 l 0 lhl 4 ~l 1 l 1 l 1 l 1 lh!

l l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMSER 25 26 LICLNSE TYPE JO 57 CAT 58 CON'T

- ' ' ~

E 5$ns l L l@l 015 l 0 l - l 0 l 3 l 2 l 4 l@l 0 l 6 l 2 l 4 l 8 l 0 l@l0 l 7 l 0 l 8 l 8 l 0 l@

7 8

60 61 DOCKET NUV8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT OESCRIPTION AND PROB ABLE CONSEQUENCES O'o o 2 l While replacing the nonqualified splices connecting the safety-relief valves l

solenoids,' pigtails to the nuclear grade cable (LER 2-80-46), it was discovered l

,g,3, that some pigtails on the solenoids were brittle and that during normal handling, l

g, g the insulating material would crack.

This deterioration was noted only on those l

g 3 g,,.

g leads which had a fiberglass tape overwrap. This event was common to both units.

l 10171 l l

Technical Specification 6.9.1.81*

l 1

,,,gj 80 7

8 9 E

OE S SC E COMPONENT C' DE SUS dE SU E

O l SlHl@ lD l@ W@ l El Ll El Cl Ol Nlh Wh lZ lh-7 8

9 to 11 12 13 18 19 20 SECUENTIAL OCCURRENCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO.

CODE TYPE NO.

h,RE l8l0l

( _.]

l 0l 4l 7l l/l l0l1l lT l M

l0]

,_21 22 23 24 26 27 28 29 30 31 32 N AC O O PL F T E

o HOURS SB IT FOR 8.

SUPPLI MA UF C RER L9_l@Lc_1@

l z l@

lzl@

I01010l0I I Y l@

lYl@

lNl@ lAl6l1l3lh

)

33 34 35 36 3J q

41 42 4

M 47 i

CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h li l 0 l l It is believed that the pigtail wiring insulation was adversely affected by the tape l l adhesive. All of the solenoids were replaced and maintenance procedures will be 1

1 i

~ m l revised to prevent a recurrence of this nature.

l L! J 3 I I J

1 4 l

l 80 7

8 9 STA

% POWER OTH ER STATUS IS O RY DISCOVERY DESCRIPTION Li_15_J l H l@ l 0l 0l Oj@l N/A l

lAl@l Performing Plant Modificati l

A T1VITY CO TENT RELEASED OP RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE

@ l Zl@l N/A l

l N/A l

1 6 7

8 9 to 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 39 I

[TTTI I 01010 l@l z l@l N/A l

PERSONNEL iN;UWiES -

t,

NUVSER DESCRIPTION 4 101010l@l

. /A l

i a 7

8 9 11 12 80 LOSS OP On OAMAGE To FACILITY Q TYPE

DESCRIPTION

v

@l N/A

{

1 9 7

8 9-10 80 E Ln '@EE7CRiPTiON@

80071403 41 l

N/A l

l l l l l 1 l l l l l l l y, '-

ISSut 7

8 3 10 68 69

80. E '

919-457-9521 NAME OF PREPARER PHONE:

LER ATTACHMENT - RO NO. 2-80-47 Facility: BSEP 11 nit No. 2 Event Da'te: June 24, 1980 It is believed that the pigtail wiring insulation material (silicon) was adversely.affected by the adhesive on the fiberglass tape. All 22 solenoids (both units) were removed and inspected with brittlement found only on those whose pigtails were taped. Those pigtails which were found taped had been

- taped by plant Maintenance personnel during rcr.itine maintenance over the past several years. New solenoids without taping were installed on all valves.

~

N e

a w

U I'

\\

?

i,

4 4