ML18113A921

LER 79-009/03L-0 on 790208:while Performing Penetrant Test 39B-1,mechanic Discovered 3 Snubbers Were Not on Test.Caused by Inadvertent Omission.Change Initiated to Add 3 Snubbers to Penetrant Test 39B-1

ML18113A921
Person / Time
Site:	Surry
Issue date:	03/07/1979
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18113A920	List: ML18113A919 ML18113A921
References
LER-79-009-03L-01, LER-79-9-3L-1, NUDOCS 7903130353
Download: ML18113A921 (2)

Text

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EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

en 2/8/79, while performing PT-39B-l, the mechanic performing the inspection dis-I)))) fovered three snubbers that were not listed on the PT. Further investigation reveal-

~ [d that the three snubbers had not been visually inspected during the previous per-

[Q]}] formance of either PT-39B-l or PT-39A-1. This is contrary to T.S. 4.1. 7A. Upon dis-1}:TI] f_overy, the three snub be rs were inspected and determined operable. There fore, the

~ pealth and safety of th__e_p_u_b_l_i_c_w_e_r_e __n_o_t_a_f_f_e_c_t_e_d_._______________________,

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LER/RO CV ENT YEAR 19 I 1° 1° 19 I I/J IOI3 I LJ e__J 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ),!RS [22) ATTACHMENT NPRD-4 PRIME C.OMP. COMPONENT Li@flOI@ OLJ@ MO ~ 9 HOLLI SU,~11TI@

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MANUFACTURER 11 12 10 17 I 33 34

• 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

o:::IIJ the three snubbers were inadvertantly omitted from both PT-39B-l and PT-39A-l when the ITJJJ 1'T I 1

s were changed on August 18, 1979. The snubbers were added to PT-39B-l and inspect-

[IJJ] I 1d. A request to change procedure has been initiated to permanently add the subject .-

[JJJJ fnubbers (2-SI-HSS-21, 2-SI-HSS-24, 2-SI-HSS-27) to both PT's.

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FACILITY STATUS  % POWER OTHER STATUS @ METHOO OF DISCOVERY DISCOVERY DESCRIPTION ~

ITEl E__J@ 10 jO 10 j@)[,.____NA_ _ ____. ~@I Mechanic's observation 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT Q REF EAYD OF RELEASE AMOUN~RF ACTIVITY LOCATION OF RELEASE@

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7 8 9 11 12 80 LOSS OF OF1 DAMAGE TO FACILITY "4J\

TYPE DESCRIPTION ~

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NRC USE ONLY l}fUEOQDESCRIPTIOM ~ ?90318 0 353 "'

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W. L. Stewart (804) 357-3184 0 NAME OF PREPARER 0.

PHONE:--------'------ 19

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(Attachment, page ~ f 1)

Surry Power Station Docket No.: 50-281 Report No.: 79-009/03L-0 Event Date: 2/8/79 Snubbers Not Inspected 1.) Description of Event:

On 2/8/79, while performing PT-39B-l (Accessible Snubbers - Visual Inspection-As Found), the mechanic performing the inspection discovered three snubbers that were not listed on the PT. Further investigation revealed that the three snubbers had not been visually inspected during the previous performance of either PT-39B-l or PT-39A-l (Accessible Snubbers Visual Inspection - As Left). This is contrary to Tech. Spec.

4.1.7.A and reportable in accordance with Tech. Spec. 6.6.2.b.(3). The subject snubbers are 2-SI-HSS-21, 2-SI-HSS-24, and 2-SI-HSS-27.

2.) Probable Consequences/Status of Redundant Systems:

Upon discovery, the three snubbers were inspected and determined operable. The health and safety of the general public were not affected.

3.) Cause of Event:

The three snubber~were inadvertantly omitted from both PT-39B-l and PT-39A-l when the PT's were changed on August 18, 1978.

4.) Immediate Corrective Action:

The three snubbers were added to PT-39B-l and inspected. The snubbers were determined operable in accordance with the visual inspec-tion criteria stipulated in the PT.

5.) Scheduled Corrective Action:

A request to change procedure has been initiated to permanently add the subject snubbers to both PT-39B-l and PT-39A-l.

6.) Action Taken to Prevent Recurrence:

A thorough review of all snubber PT's for both Unit 1 and Unit 2 has been performed. The subject three snubbers were the only ones that were omitted.

7.) Generic Implications:

Since this is considered a random event, there are no generic implications.