ML17059B659

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Rev 0 to S0.0SEWSMSIVIR, Screening Evaluation Work Sheets for Main Steam Isolation Valve Instrument Rack (Msivir)
ML17059B659
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 07/07/1997
From: Agosta C, Alvi M
NIAGARA MOHAWK POWER CORP.
To:
Shared Package
ML17059B657 List:
References
S.0SEWSMSIVIR, S.0SEWSMSIVIR-R, S0.0SEWSMSIVIR, S0.0SEWSMSIVIR-R00, NUDOCS 9708070119
Download: ML17059B659 (12)
v • d • e


Text

CALCULATIONCOVER SHEET NUCLEARENGINEERING ATTACHNEItIT D Page 1 ( Next~~

Total~

Last~

NINE MILEPOINT NUCLEARSTATION Unit (1, 2 or 0=Both):

1 Discipline:

STRUCTURAL TNe SCREENING EVALUATIONWORKSHEETS FOR THE MAINSTEAM ISOLATIONVALVEINSTRUMENTRACK(MSIVIR)

Caioulstion No.

SO.OSEWSMSIVIR (Sub)system(s) 01 Building Fkor Bev.

Index No.

TB 240 SO.O Originator(s)

CARMEN R. AGOSTA C

er(s) /Approver(s)

Obh expel Rev 00 Descrl tion INITIALISSUE Design Chan eNo.

B Date Chk Date A

-an-ff IA Date Computer Output/Microfilm Filed Separately (Yes / No / NA): NA Superseded Document(s):

NONE Safety Class (SR/ NSR/ Qxx): SR Document Cross Reference(s) - For additional references see page(s):

NA Ref No NER 1S-012 Document No.

Doc T

NER Index Sheet Rev 00 SO.OIPEEEHCLP F01 3

SO.OSQUGANCHOR CALC CALC SO.O SO.O 00 00 General Reference(s):

4. GENERIC IMPUMENTATIONPROCEDURE (GIP)
5. NMPC Letter to NRC, File Code NMP1L 1044, dated March 11, 1996 Remarks:

NONE Confirmation Required (Yes/ No): No Final issue Status File Location Operations Acceptance See Page(s):

(APP /FIO/VOI ): APP (Gale/Hold ): Gale Required ( Yes/No): No Evaluation Number(s) / Revision: NR Copy ofApplicabilityReview Attached (Yes / N/R)VN/R Component ID(s) / EPN(s) / Line Number(s):

NA Key Words: NMP-1, STRUCTURAL, SQUG, SEWS, SEISMIC VERIFICATION FORMAT¹ NEP-DE$48-FOIM

VNIAGARA 4 MOHAWK NUCLEAR ENGINEERING CALCULATIONCONTINUATIONSHEET Page~

(Next~

Nine MilePoinf Nuclear Sfation 0

inat

/Date 0-ef.

Unit:

Checker/Datee.5 Disposition:

Caicuhtfon No.

SO.OSEWSMSIVIR Revhhn 00 PURPOSE:

Document the Screening Evaluation Work Sheets (SEWS) forthe Main Steam Isolation Valve Instrument Rack (MSIVIR),equipment number MSIVIR.

This SEWS has been prepared as part ofthe commitment to use the SQUG (GIP) methodology to document the seismic adequacy of SSEL components.

CONCLUSION:

The MSIVIRanchor analysis and High Confidence Low Probability of Failure (HCLPF) evaluation is contained in the IPEEE HCLPF Analysis for Various Equipment calculation SO.OIPEEEHCLPF01 calculation.

This calculation found the MSIVIRhas a HCLPF of 2.1g. The NMP-1 plant HCLPF is 0.3g. Since 0.3g<2.1g and the anchor bolt tightness check results confirmed these anchors are tight, the SQUG outlier is resolved.

ATTACHMENTS A. SEWS for Equipment ID Number MSIVIR B. The Outlier Seismic Verification Sheet (OSVS) for Equipment ID Number MSIVIR FORMAT¹ NEP-DES@8, Rev. 01 (F02)

SCREENING EVALUATIONWORK SHEET (SEWS)

GIP Rev 2, Corrected, 2/14/92 Status: Yes Sheet 1 of 3 ID: MSIVIR*( Rev.

1 )

Class: 18. Instruments on Racks

==

Description:==

AP/MAINSTEAM ISO VLVINSTRUMENT RACK Building TB Manufacturer, Model, Etc.:

SEISMIC CAPACITYVS DEMAND Floor El.: 261.00 Room, Row/Col: MSIVRMJ8 1.

Elevation where equipment receives seismic input Elevation of seismic input below about 40'rom grade (grade = 243.00) 3.

Equipment has fundamental frequenc above about 8 Hz (est. frequency = )

Capacity based on:

1.00 " Bounding Spectrum Demand based on:

1.00

  • Design Basis Ground Response Spectrum 261.00 Yes SRT 1.000 LOG rr r

r

~ ~

0.010 0.20 LOG Hz Capacity

..... Demand 100.00 Capaci Demand 1

Demand 2 File H:tGIPtGIPts ectra.des H:tG IMP ROJ003Rspectra.des H:tGIPLPROJ003Ftspectra.des Record Label Bounding Spectrum UNIT:iPLANTiBLDG:iBUILDINGiE/Q:iSSEiELEV:iELEVATIONiROW/

COL: ALLDIR: DIR NODE: 1 UNIT:iPLANTiBLDG:iBUILDINGIE/Q:ISSEiELEV:iELEVATIONiROW/

COL:

LL DIR: DIR NODE: 1 Does capacity exceed demand' NTlCHMQg CALC NO S'EVISION 4tgrp/

PAGE 80

SCREENING EVALUATIONWORK SHEET (SEWS)

GIP Rev 2, Corrected, 2/14/92 Status: Yes Sheet 2 of 3 ID: MSIVIR*( Rev.

1 )

Class: 18. Instruments on Racks

==

Description:==

AP/MAINSTEAM ISO VLVINSTRUMENT RACK Building'B Manufacturer, Model, Etc.:

Floor El.: 261.00 Room, Row/Col: MSIVRMJ8 CAVEATS - BOUNDING SPECTRUM IR/BS Caveat 1 - Earthquake Experience Equipment Class.

IR/BS Caveat 2-Computers and Programmable Controllers Evaluated Separately.

IR/BS Caveat 3 - Structure Adequate.

IR/BS Caveat 4-Adjacent Racks Bolted Together IR/BS Caveat 5-Natural Frequency Relative to 8 Hz LimitConsidered.

IR/BS Caveat 6-Sufficient Slack and Flexibilityof Attached Lines.

IR/BS Caveat 7 - Adequate Anchorage.

IR/BS Caveat 8-Potential Chatter of Essential Relays Evaluated.

IR/BS Caveat 9-No Other Concerns.

Is the intent of all the caveats met for Bounding Spectrum' Yes Yes Yes Yes Yes Yes Yes Yes Yes ANCHORAGE

1. The sizes and locations of anchors have been determined
2. Appropriate equipment characteristics have been determined (mass, CG, natural freq.,

damping, center of rotation).

3. The type of anchorage is covered by the GIP
4. The adequacy ofthe anchorage installation has been evaluated (weld quality and length, nuts and washers, expansion anchor tightness, etc.)
5. Factors affecting anchorage capacity or margin of safety have been considered: embedment length, anchor spacing, free-edge distance, concrete strength/condition, and concrete cracking.
6. For bolted anchorages, an gaps under the base are less than 1/4
7. Factors affecting essential relays have been considered: gaps under the base, capacity reduction for expansion anchors.
8. The base has adequate stiffness and the effect of prying action on anchors has been considered.
9. The strength ofthe equipment base and the load path to the CG is adequate
10. The adequacy of embedded steel, grout pads or large concrete pads have been evaluated.
11. The anchorage capacity exceeds the demand.

Are anchorage requirements met'?

Yes Yes Yes*

Yes Yes Yes Yes Yes Yes Yes Yes erACHMENf CAl.C IN 8EVISION c

PAGE NO IV+p(

SCREENING EVALUATIONWORK SHEET (SEWS)

GIP Rev 2, Corrected, 2/14/92 Status: Yes Sheet 3 of 3 ID: MSIVIR*(Rev. 1)

Class: 18. Insfruments on Racks

==

Description:==

AP/MAINSTEAM ISO VLVINSTRUMENTRACK Building TB Manufacturer, Model, Etc.:

Floor El.: 261.00 Room, Row/Col: MSIVRMJ8 INTERACTIONEFFECTS

1. Soft targets are free from impact by nearby equipment or structures
2. Ifthe equipment contains sensitive relays, it is free from all impact by nearby equipment or structures.
3. Attached lines have adequate flexibility
4. Overhead equipment or distribution systems are not likely to collapse.
5. No other adverse concerns were found.

Is equipment free of interaction effects' Yes Yes Yes Yes Yes

~CHSKhLES SRT are W. Djordjevic and C. Agosta - Outlier Evaluation In Revision 0, this rack was declared an outlier because it uses Cinch type leaded anchors which are not covered by the GIP.

External analysis 95C2873-C-003 evaiuates the anchorage using data developed by Westinghouse Savannah River (referenced in calculation) and shows a HCLPF PGA equal to 2.1g.

74 O

Subsequently, bolt tightness checking was conducted on accessible Cinch anchor installations with only ene failureto hold tightness.

Since this failure rate is Isss4han 1% and the HCLPF is equivalent to about a 1% failure rate, no reduction factor is applied to Cinch anchors. ~

Therefore, this equipment is found acceptable forA46 design basis purposes and the outlier is resolved.

The HCLPF remains at 2.1g PGA.

Evaluated by:

Date:

ll g7 n/~!~~-

ATTACHMENT CAI.C KO REVISION PAGE KO

OUTLIER SEISMIC VERIFICATIONSHEET (OSVS)

GIP Rev Sheet 1 of 1 ID: MSIVIR* Rev. 0 Class: 18. Instruments on Racks Descri tion: AP/MAINSTEAM ISO VLVINSTRUMENTRACK Buildin: TB Floor El.: 261.00 Room, Row/Col: MSIVRMJ8

1. OUTLIER ISSUE DEFINITION-Mechanical and Electrical E ui ment a.

Identify all the screening guidelines which are not met. (Check more than one ifseveral guidelines could not be satisfied.)

Ca acit vs. Demand Caveats Anchora e

Seismic Interaction Other b.

Describe all the reasons forthe outlier (i.e., ifall the listed outlier issues were resolved, then the signatories would consider this item of equipment to be verified forseismic adequacy).

MSIVIR~ is anchored with Cinch leaded t

anchors.

Cinch t anchors are not covered b the GIP.

2. PROPOSED METHOD OF OUTLIER RESOLUTION 0 tional a.

Defined proposed method(s) for resolving outlier.

Determine actual ca acities of Cinch t anchors and corn are them to demand loads or retrofit anchora e.

b.

Provide information needed to implement proposed method(s) for resolving outlier (e.g., estimate of fundamental frequency).

3. COMMENTS
4. CERTIFICATION:

The information on this OSVS is, to the best of our knowledge and belief, correct and accurate, and resolution of the outlier issues listed on the previous page willsatisfy the requirments for this item of equipment to be verified for seismic adequacy:

Approved by:

Date:

ATTACHMENT CALC NO REVISION PAGE NO

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