ML18139A755

LER 80-025/03L-0:on 801003,w/Unit 2 at 100% Power,Periodic Test 27D Revealed That Amperage for Circuit 2A Panel 10 Was Below Acceptance Criteria.Caused by Damaged Heat Tracing Tape.Verified That Redundant Circuit Was Operable

ML18139A755
Person / Time
Site:	Surry
Issue date:	10/16/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A602	List: ML18139A601 ML18139A603 ML18139A604 ML18139A754 ML18139A755
References
LER-80-025-03L-03, LER-80-25-3L-3, NUDOCS 8010200524
Download: ML18139A755 (2)

Text

i RC. FORM 3.66. U.S. NUCLEAR REGULATORY COMMISSION 7;'17} ,."

• e LICENSEE EVENT REPORT e CONTROL BLOCK: I...._,____.__.___.___..___,I G) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

~ I v I A I s I P I s I 2 101 o Io I - Io Io I ol ol oI -I oI o101 4 ! 1 !1 I 1 ! 1101 1* 10

. 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 . 26 LICENSE TYPE 30 57 CAT 58 kE] 8

~~~~ L2J© 60 I o I s I o I o I o 12 1s 11 61 DOCKET NUMBER 68 1011 69 Io Io I3 I sI o101 EVENT DATE 74 75 1 1 o 1

:1 I 6 I s I o IG)

REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

2J2J I With Unit #2 at 100% power, Periodic Test 27D revealed that the amperage for Circuit 2A Panel 10 (Unit 112 BIT inlet line and valves MOV-2867 A & B) was below the Accept-ance Criteria stipulated in the .PT. The redundant Heat Tracing Circuit was operable.

~ This is a degraded mode of operation as specified in T. S. 3. 3. B. 5 and is report ab le

~ in accordance with T.S.6.6.2.b(2). The health and safety of the public were not affected.

]JI]

B 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUB CODE SUBCODE I cl BI@

9 10 w@w@

11 12 I H I E I A I T I E I R 1@ 1.:£..J@) ui@

i3 18 19 20 SEQUENTIAL OCCUR REN CE REPORT REVISION r;:;-.., LEA/RO LVENT YEAR REPORT NO. CODE TYPE NO.

~ REPORT NUMBER I !

8 O j I23 I 10 12 I s26I I/I IO I 3 29I ~ L:=J LQ.J 21 22 24 27 28 30 31 32 ACTION FUTURE r~El@IT~OIG~)

33 34 0EFFECT r~AI@

3~

SHUTDOWI\'

MIE~HI 36 I OI 37 H~r~

r:;;;,,

Po ! 40 ATTACHMENT SUiM~I@

41 NPRD..:

Fr~ SI 42 sr~43 1I@)

PRIME COMP .

44 COMPONENT MANUFACTURER IT I 11 Bj 51@

47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

Im The Heat Tracing Tape was; damaged during :erection* of scaffolding to s_upport IILechanicall work in the nearby area. The defective Heat Tracing Tap~ was replaced and verified TIIJ .1-_o_p_e_r_a_b_l_e_._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

ITD 1 . . . '_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ,

IE) 8 *9 BO FACILITY STATUS  % POWER OTHER STATUS

'3o' I.;::;}

METHOD OF DISCOVERY DISCOVERY DESCRIPTION A

~

Q}] L!J@ 111 0 IO I@!. . .__N_A_ _ _ _....... ~@)L....I__E_le_c_t_r_ic_i_an_ _ _ _ _ _ _ _ _ _ ...J 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT Q,,

RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE @

~ ~@~@I NA NA a 9 : 10 11 44 45 80 PERSONNEL EXPOSURES Q,.

NUl!iBER ~ TYPE DESCRIPTION Q2JB I9 0

1 ° I O

11l0l:.J@ NA 1 2 1L.3,-.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . . J 8 0 PERSONNEL INJURIES Q tJUMBER DESCRIPTION~

~ I O10 JO J@).___________N_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _~

8 9 11 12 80 LOSS OF OR D"'-t/.,'..GE TO FACILITY '43\

TYPE DESCRIPTION

• l::.::.J

• ~@ NA 8 9. '-,o------------------------------------=--------.J80 Pc.:8L /CITY Q..

ISSUEC,Q DESCRIPT/01\1 ~ NRC USE ONL y "'

~ LE.le,._____________- - ' - N = A ~ - - - - - - - - - . . . J I I I I I I 11 I I I I I ~

8d ~

l O 2 ~11.li? 'REPARER . ~

9 . 10 68 69 80 .;:

J. L. Wilson PHONE:_(_8_0_4_)_3_57_-_3_1_8_4_ _ _ _

e e ATTACHMENT 1

• SURRY POWER STATION, UNIT 2 DOCKET NO:

REPORT NO:

50-281 80-025/03L-O EVENT DATE: 10-03-80 TITLE OF REPORT: HEAT TRACING FAILURE

1. Description of Event:

With Unit 2 at 100% power, Pe.riodic T.est 27D revealed that the amp readings for circuit 2A Panel.10 (Unit #2 BIT inlet line and valv.es) were below the Acceptance Criteria stipulated in the PT. This is a degraded mode of operation as specified in T.S.3.3.B.5 and is re-portable in accordance with T.S.6.6.2.b(2).

2. Prob ab le Consequences & Status of Redundant Systems:

The Heat Tracing is intended to ,maintain a temperature above that needed for flow. The redundant Heat Tracing Circuit was operable, therefore, the.health and safety of the public were not affected.

3. Cause:

The *Heat Tracing Tape was damaged during ..erection of scaffolding to support* mechanical work in the nearby area.

4. Immediate Corrective Action:

The immediate corrective action was to verify that the redundant circuit was operable.

5. Subsequent Corrective Action:

The defective Heat Tracing Circuit was replaced within the time span specified by the Technical Specifications.

6. Action Taken to Prevent Recurrence:

No additional *actions are deemed necessary.

7. Generic Implications:

The task force has reviewed the total. spectrum of the Heat Tracing sys tern and a Design Change is being prepared as a .result of the Task Force Study. Long lead items are b.eing procured .

I