IR 05000313/1988030

Insp Repts 50-313/88-30 & 50-368/88-30 on 880912-16.No Violations or Deviations Noted.Major Areas Inspected:Testing of Pipe Supports & Restraint Sys

ML20204D885
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/12/1988
From:	Clay Johnson, Stetka T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20204D844	List: IR 05000313/1988030 ML20204D841
References
50-313-88-30, 50-368-88-30, NUDOCS 8810210244
Download: ML20204D885 (6)

Text

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APPENDIX U.S. N'JCLEAR REGULATORY COMMISSION

REGION IV

NRC Inspection Report: 50-313/88-30 Operating Licenses: DRP-51 50-368/88-30 NPF-6 Dockets: 50 313 50-368 Licensee: Arkansas Power & Light Company (AP&L) P.O. Box 551 Little Rock, Arkansas 72203  ; Facility Name: Arkansas Nuclear One (ANO), Units 1 and 2 Inspection At: ANO, Russellville, Arkansas Inspection Conducted: September 12-16, 1988 Inspector: b b l o - it- 7 8 C, E. Johnson,Deactor Inspector, Plant Systems Date Section, Division of Reactor Safety l I h -

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Approved: \l

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m /[[Ab /o!/p[5f T. F. Ste~tka, Chief, Plant Systems Section Date' ' Division of Reactor Safety

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Inspection Summary Inspection Conducted September 12-16, 1988 (Report 50-313/88-30) Areas Inspected: Routine, announced inspection of testing of pipe supports and restraint system Results: Within the area inspected, no violations or deviations were identifie Inspection Summary Inspection Conducted September 12-16, 1988 (Report 50-358/88-30) ' Areas Inspected: No inspection of Unit 2 was conducte Results: Not applicable, ss10210244 881017 DR AboCK oS00g3

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DETAILS l '

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1, Persons Contacted j Principal Licensee Employees  !

   *J. M. Levine Executive Director Nuclear Operations   !
   *J. D. Vandergrift, Manager, Operations    l
   *R. Lane, Manager, Engineering     !
:   *B. Baker, Manager, Modifications    !
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   *L. Humphrey, General Manager, Nuclear Quality

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   *J. McWilliams, Manager, Maintenance    i
   *D. Howard, Manager, Licensing     j

*R. Wewers, Hanager, Work Control Center

   *P. Michalk, Licensing Engineer    !
;    J. GoBell, Mechanical Engineer    !

Wyle Laboratories Scientific Services (Wyle)

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a - M. McInerney, Project Manager [ J., Ortakales. Test Engineer

K. Buff, Test Technicia i

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J. Messeh, Supervisor, Visual Examiner l , W. Young, Visual Examiner j ! E. Hudson, Visual Examiner t D. Moore, Test Technician j

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' NRC I ,

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i * Johnson, Senior Resident Inspector l:

   *R. Haag, Resident Inspector I
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   * Denotes those individuals attending the exit intervie l Testing of Pipe Supports and Restraint Systems (70370)

The purpose of this inspection was to determine wt.e:her pipe support (hydraulic and mechanical snubbers) surveillances for safety-related [ ' piping and equipment are in conformance with the Technical  : t i Specifications (TS) and commitments and to determine whether required ! records are properly reviewed, evaluated, and maintaine l i ! 1 Procedure / Technical Specification Review 1

The NRC inspector reviewed TS Sections 3,16 and 4.16 which apply to , i all shock suppressors (snubbers). Section 3.16 gives the Limiting  : Condition for Operations (LCOs) for shock suppressors and l ' Section 4.16 lists the surveillance requirements for the perfomance i I

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of snubber inspections. The NRC inspector also reviewed the following two procedures pertaining to the snubber surveillance ; inspection and testing progran:

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Procedure 1306.003, "Visual Inspections, VT-3 & VT-4L, of Snubbers," Revision 11, dated August 29, 1988

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Procedure 1306.023 "Snubbers Functional Testing Per VT-4," Revision 4, dated August 12, 1988 Procedure 1306.003 provides instruction on visual inspections of both mechanical and hydraulic snubbers (large and small bore). This , procedure addresses those elements of the visual examination which would identify the following snubber conditions and deficiencies:

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Inoperability due to corrosien;

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Improper installation;

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Lack of lubrication;

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Overheating during welding;

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Excessive overloading; and

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Da:nage to mechanical snubbers resulting from water hamer

;   effects, improper handling, or other mechanical abuse.

! The procedure directs the performance of a detailed visual examination to detect the following: '

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Proper support symbol / number correctness;

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Loose parts; i.e., clamps, slipping on pipe;

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Debris; ,

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Abnonaal corrosion / corrosion products (such as twic acid or heavy rust); ' i * Wear and erosion; '

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Physical damage;

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Integrity of welds;  ;

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Correct orientation and configuration; and t

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Pin-to-pin dimension ; i i i L

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Procedure 1306.023 provides instruction and documentation for the functional testing of snubber This procedure is applicable for the " following supports:

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Pacific Scientific (PSA) Mechanical Snubbers;

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i Anchor-Darling (A-D) Mechanical Snubbers;

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ITT Grinnel Small Bore Hydraulic Snubbers (Cylinder Diameter less that 6 inches);

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Paul-Munroe Hydraulic FMH-2200 Snubbers; and

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Paul 41unroe large Bore Hydraulic Snubber Procedure 1306.023 provides test criteria for drag, acceleration, and bleed rate. Based on the actual test results, the " velocityIsdeterminedtobeeitheroperable, snubber degraded,orfaile Both procedures are generic and are used by Wyle at other sites. The NRC inspector's review determined that both procedures are adequate and were properly reviewed and approved by the licensee, b. Observations

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) Surveillance Inspections The visual inspections of seven pipe supports performed by Wyle

,  visual examiners inside Unit 1 containment were observed by the NRC

' inspector. In each case, the examiners performed the visual ' inspections in accordance with established procedures. Any deficiencies identified were noted on the appropriate forms.

Discussions with the visual examiners indicated that they were

knowledgeable of the required in.pection attributes, i l' The supports observed are designated below by the examination numbers established by Wyle and the original mark numbe Examination N Mark N t

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32 HS-89 122 HS-67 61 LW-224-H3(A) ! 62 LW-224-H3(B) . 65 LW-224-147 121 HS-66 140 HS-30 l Functional Testing l The NRC inspector witnessed the in place testing of two Paul-Munroe l (hydraulic) large bore reactor coolant pump supports inside i l l I l l - - - - . - - . - . - . - - . _ _ _

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containment. OLservations indicated that the supports met all criteria except for bleed rat There appeared to be spikes in the readings of the results. It was later determined by Wyle and the licensee that because of the low bleed rate of'the snubber, that the l results we.re on the low end of the flow span which could cause i electrical spikes in the results. A decision was made by the licensee and Wyle to verify the results on the bench test machine set up in Wyle's trailer. During a subsequent telephone conversation

,   held on September 19, 1988, with a licensee representative, the NRC l   inspector was informed that the test results were acceptabl ,

The functional testing of four mechanical snubbers was also observed by the NRC inspector. The results were within the acceptance  ; criteria. The following supports were observed: i

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Examination No, Mark N ) 28 HS-48(A) i 16 HS-6(B) l 156 did not witness 2nd test) RCP-1C) 157 did not witness 2nd test) RCP-2 C) + Review of Records i i The NRC inspector reviewed calibration records of the test equipment  !

!   used, qualification records of the personnel performing the       l
!   inspections, and the visual examination reports (VT-3). Calibration      t

) records reviewed indicated that equipment utilized was in . l calibration. Ten personnel qualification records were reviewed.

. These records indicated that all personnel were certified as required j by procedures for the job they performed. Eighteen VT-3 examination i

reports wore reviewed to ver'.fy the following

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l l * Results were within the established acceptance criteri ' identified deficiencies were noted and documente l i  !

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Adequate evaluation of deficiencies were noted by the VT-3  : examiner l l * Corrective action was implemented as require '

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Records Reviewed: Calibration records APl#2 (In-Place Snubber Test System) Instrument Manufacturer Model Wyle S/N Data Acquisition HP 3497A 103262 2629A19805 RTD Transmitter Omega TX58-PT2 103268 8608 Frequency Converter Venture Tech 105130 F8007 Pressure Transducer Heise 621 103265 $6-7215 Pressure Transducer Heise 621 106696 56-13957 Pressure Transducer Heise 621 103267 56-7216 Flow Meter Stauff VC 0.04 103270 210 Flow Mater Stauff VC S2 Pressure Gage Robertshaw 614-B 106802 N/A Pressure Gage Robertshaw 614-B 106804 N/A Wyle Snubber Test Machine (S/N 108), Model 100, Wyle No. 100933 VT-3 Examination Report No No violations or deviations were identifitd.

, Exit Interview TheNRCinspectormetwiththelicensee(denotedinparagraph1)on September 16, 1988, and sunnarized the scope and findings of this inspection. No infonnation was identified as proprietery.

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