Text

Rev 2 to EA-FC-90-082, Potential Over-Pressurization of Containment Penetration Piping Following Main Steam Line Break in Containment
	ML20196G225
Person / Time
Site:	Fort Calhoun
Issue date:	12/18/1998
From:	Robert Lewis, Ressler J, Richard A; OMAHA PUBLIC POWER DISTRICT
To:	;
Shared Package
ML20196G204	List: LIC-99-0056, Forwards Rev 2 to EA-FC-90-082, Potential Over- Pressurization of Containment Penetration Piping Following Main Steam Line Break in Containment, to Facilitate Review of Response to GL 96-06; ML20196G225;
References
	EA-FC-90-082, EA-FC-90-082-R02, EA-FC-90-82, EA-FC-90-82-R2, NUDOCS 9907010085
	Download: ML20196G225 (121)
	v • d • e

{{#Wiki_filter:LIC-99-0056 Enclosure EA-FC-90-082, Rev. 2, " Potential Over-Pressurization of Containment Penetration Piping Following a Main Steam Line Break in Containment" i

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c PRODUCTION ENGINEERING DIVISION OFFICIAL cur L PED-QP-5.1 QUALITY PROCEDURE FORM R9 PAGE 1 OF 2 EA COVER SHEET EA-FC- 9b-48 A Rev.No. 2. EA Page No. / Total Pages QO EA TITLE (include computer program designation): ft/er>/$tl 9ete On 5rurfjaffor; c/ d:rn/ca,nd l Of8tAhon fibirk followirs4 a. MaiA 9ersin I-trie 8tsk ih d:nfoin%ed QA CATEGORY: REPORT TYPE: 9L 9/28[II , N CQE [ ] Fire Protection K Revision Analytical Report 3 Special [ ] Non CQE [ ] Limited CQE [] ENGINEERING ANALYSIS TYPE: Electrical Equipment Qualification (EEQ) [ ] Computer Code Error Analysis (CCE) [] Seismic Equipment Qualification (SEQ) [ ] Nuclear Mat'l Accountability (NMA) [] Core . Reload Analysis (CRA) [ ] Operations Support Analysis (OSA) [] Fire Hazards Analysis (FHA) [ ] USAR Justification (USJ) [] Cable Separation Analysis (CSA) KOTHER: [] Associated Circuits Analysis (ACA) [] Safe Shutdown Analysis (SSA) [] INITIATION: PED Department No. 867 Preparer *M0 Initiation Date NM REVIEW ASSIGNMENT (name or group - by Preparer or Responsible Department Head): Reviewer 8 Rt <de v- Date io/a/46 Independent Reviewer 74 ku.s (& Date ic/ /9s

Interdisciplinary Review M /A Date
Operations review required if Operating Documents may be impacted (EOPs, AOPs, Ols, etc.).

     " Mgr- Station EngJMgr- DEN                                                                  Date
     *

Signature required only when independent review authorization is required.

APPROVAL (signature when EA results are ready to implement): Responsible Department Head b Id. Date /2!/ f f 4 OWNER ASSIGNMENT (by Department Head) Name Date EA CLOSE-OUT (Document Changes listed on PED QP-5.6) Completed PED QP-5.6 transmitted to Document Control. Name Date Condition Report (SO-R-2) written based on the results of this EA7[] YES CR [] NO DISTRIBUTION: Copy Copy Group Name & Location Sent (X) Group Name & Location Sent (X) [352] Manager - System Eng. )' [840] Manager- Operatons [800] Trdning Program Configuration Management J

PRODUCTION ENGINEERING DIVISION OFFICIAL UUrL PED-QP-5.1 QUALITY PROCEDURE FORM R9 PAGE 2 OF 2 EA-FC-90-@k Rev. No._A. EA Page No.1 Total Pages__. PREPARATION!REVIEVy (signatures): Preparer (s) *

                                                                                            /     'N'W Signature                                              Date Reviewer (s)             L 4                                                               //0/s[9f Signature                                               Date Independent Reviewer (s)              . 6b                                                   / /o[ /9r Signature                                               Date G

interdisciplinary Reviewer (s)* N !k / Signature Date

Operations review required if Operating Documents may be impacted (EOPs, AOPs, Ols, etc.).

AFFECTED DOCUMENTS: For a list of affected documents see form PED-QP-5.6. AFFECTED SYSTEM / EQUIPMENT: System Tag No.(s) Ac-Clw Mov-%7k,8 C 4D /Rev-49td 8 C 9D /hev VMA; 6,6 4D Dw /tv-/SGM f B cH h'ev-Rob /MdbM/ yD N6v-5% Af 9 lN6V-S004 tB Fu? F20-n9 ; /8/, ab d 697 Conf 63. 7 .s.8 . 9 /0, // , /2, /3 /S -, /8,, /9,, .2 0, i s

                                  .R9.US,SE / 20
                                   ->           i 1

Engineering Analysis PreparationOFFICIALCurrEA No.: EA-FC- od-72 Review and Approval Form PED-QP-5.4 Record of Revision Page 1 of 1 EA Page No. $3 Rev. No. Dercription/ Reason for Change O fH ITI)FL ISCOE

  'I kEtJRITG To INcoRPoRAre usE of d$bfE 22T FAvuren CcHDITicN dLLOWABLE PREsSUAE IN EVALUATibN, dtD NEW REFEREtJCE6.

Q t>> wr.'bl US4f? Gpp v LJ F am ra f-1 ) W, A W w uQe&o r@MMand' yk pa g I I PED-QP-5.34 Rev. 2 i _. J

PRODUCTION ENGINEERING DIVISION OFFICIAL Wr I. PED-QP-5.6 QUALITY PROCEDURE FORM R0 PAGE 1 OF 2 EA-FC 70'082 REV. No.1 Page No. N EA Affected Documents The EA Preparer is to identify documents affected by this Engineering Analysis. Markups are to be provided in an Attachment to the EA except those noted with an *. Changes not involving procedures should follow the associated change process. The Preparer is to indicate below how the EA is to be processed by Document Control. Not Required, EA supports MR-FC- - Required, the need for a Modification or ECN, FLC, Pre-approved NRC commitment chango, or Condition Report identified. EA is closed on receipt of the completed QP-5.6 form. l _/ Change to a DBD, USAR, etc. without a change to plant procedures identified. EA is closed on receipt of the completed QP-5.6 form. l Change to a DBD, USAR, etc., and plant procedures (no hardware) identified. EA is closed on receipt of the completed QP-5.6 form. No documents changes or other changes are required. EA is closed on receipt of the , completed QP-5.6 form. Note: Markups are to include any inputs or assumptions which define plant configuration and/or operating practices that must be implemented to make the results of the EA valid. Reference Procedure PED-QP-5 Section 4,10 for a detailed discussion. The EA may provide the basis for a 10CFR50.59 analysis or substantiate a 10CFR50.59 analysis. Affected Documents Document Type Document Number (Naif Procedure Change No, not applicable) FLC No., etc. Emergency Operating Procedure

PdA Abnormal Operating Procedure
f Annunciator Response Procedure k Technical Data Book )

Surveillance Test Procedure k Calibration Procedure [ Operatina Procedure h Maintenance Procedure [ P.M. Procedure . 2. E. P/E. P. !/R. E. R. P.

Security Procedures * (Safeguards)* M

OFFICIAL UUr1, PRODUCTION ENGINEERING DIVISION PED-QP-5.6 QUALITY PROCEDURE FORM RO PAGE 2 OF 2 EA-FC N'081 REV.No. A Page No._6_. Affected Documents Document Type Document Number (NA if Procedure Change No, not applicable) FLC No., etc. Ooeratina instruction tJA System Trainino Manuals NA Technical Specification

MA U.S.A.R sag +oon 6.9. 2 4 S.9.13 Licensina Commitments G L cf6 -0 6 f2c4 re c 4 CID Titc79 /c2 Standing Order NA Security Plan (Safeguards) N8 ]

COE List NA NA ) Vendor Manual Changes l Desian Basis Documents SD6D-CON T'-60 / JHAMPS Data Base NA Oil Spill Prevention, Control and / Countermeasure (SPCC) Plan \ l EEQ Manual / _SE-PM-EX-0600 - h Uodated Fire Hazard Analysis [ NPRDS h Electrical Load Distribution Listing (ELDL) Station Eauioment labelina / Engineerina Analysis Y Calculations / Drawing Number ( Drawina Number Y Other NA NN Completed By: Owner (if Plant Procedure Changes Required or n/a) \ sDate Completed By: b 3. 9,$-9 8 Preparer Date l

PRODUCTION ENGINEERING DIVISION OFFICIAL con PED-QP-5.7 QUALITY PROCEDURE FORM R0 PAGE 10F 2 EA-FC i&d8%1EV. No.1 Page No._k. EA PREPARER CHECKLIST YES NO N/A

1. Are the ASSUMPTIONS necessary to perform the EA adequately described and verified as being valid and accurate? Reference PED-QP-5 Section 4.6. U

2. If applicable, has the use of Engineering Judgment been document per v PED-QP-147 Reference PED-QP-5 Section 4.6. A

3. If applicable, has operating experience been considered (e.g. for replacement parts / components, has NPRDS, INPO, NRC, industry experience been used supporting the application)? Reference PED-QP-5 Section 4.6. N :

4. Have applicable licensing commitments regarding the subject EA been ,j reviewed and are met? Reference PED-QP-5 Section 4.6. A

5. Is the computer program identification number (Ref. PED-MEl-23, i Section 5.3.1) on the cover sheet as part of the EAs description? N NOTE: Only applies to DEN Mechanical and Electrical /l&C Departments.

6. Is the computer code title and version / level properly documented in the

                                                                                                ,j EA?                                                                                    P

7. Is the listing or file reference of the final computer input and output provided?

8. Does the computer run have page number and alphanumeric program number on every sheet? X

9. Have updates been prepared or described for procedures as identified in form PED-QP-5.6 including any assumptions that impact procedures or-design documents? This includes drafts of the associated 10CFR50.59 review (FC-154) where required. Reference PED-QP-5 Section 4.10. N Note: The FC-154 forms cannot be signed by a qualifiet .eviewer until the EA reviews are complete and the Responsible Department Head has approved the EA for implementation.

10. Have modification to the facility as identified in Section 6.0 Results and Conclusions been identified and the appropriate documents (Modification Request or ECN) been drafted? Reference PED-QP-5 Section 5.2.1. [

'L > I: OFFICIAL Curl PRODUCTION ENGINEERING DIVISION PED-QP-5.7 QUALITY PROCEDURE FORM R0 PAGE 2 OF 2 EA-FC MIlREV. No1 Page No.1

11. If required has a Condition Report been prepared and/or submitted in accordance with SO-R-02, is the off normal condition summarized in EA

          - Section 7.57

12. If a Commitment to the NRC that is not part of the FCS Design Basis must be changed to implement this EA, has Licensing been notified of the proposed change? Certain Commitments require prior NRC approval before implementing the change. Has the necessary approval been s obtained? See NOD-QP-34 for additional guidance. A

13. Does Form QP-5.6 define the EA close-out requirements? X

14. Where appropriate,- have the necessary 10CFR50.59 (FC-154 or FC-155) evaluations been drafted to support changes to the DBDs, USAR, y Operating documents, etc.? __

A Note: The FC-154 forms cannot be signed by a qualified reviewer until I the EA reviews are complete and the Responsible Department l Head has approved the EA for implementation. I l COMMENTS: ' I l t

       @W Signature
                                        /

MM9 Date PEO /EOS Department /6rganization

PRODUCTION ENGINEERING DIVISION OFFICIAL wr s' PED-QP-5.2 QUALITY PROCEDURE FORM R7 PAGE 1 OF 3 EA-FC-90-CAREV. No. 7- Page No.1 EA REVIEWER CHECKLIST l YES NO N/A

1. Does the PURPOSE section adequately and correctly state the reason: or the need to prepare the EA? /

2. Does the EA adequately and correctly address the concerns as stated in the PURPOSE section? /

3. Are the RESULTS AND CONCLUSIONS stated and reasonable and supportive of the PURPOSE and SCOPE 7 V

4. Were the methods used in the performance of the Analysis appropriately applied? / i

5. Have adjustment factors, uncertainties and empirical correlations used in the analysis been correctly applied?

6. Were the INPUTS correctly selected and incorporated into the EA?

7. Are all INPUTS to the ANALYSIS correctly numbered and referenced such that the source document can be readily retrieved? /

8. Were the ASSUMPTIONS used to prepare the EA adequately documented? V

9. Have the appropriate REFERENCE and the latest revisions been identified? /

10. Have the REFERENCES been appropriately applied in the preparation of the EA? /

11. Is the information presented in the ANALYSIS accurate and clearly stated in a logical manner? /

12. If manual calculations are presented in the ANALYSIS are they:

a. free from mathematical error? /

b. appropriately documented commensurate with the scope of the analysis? /

PRODUCTION ENGINEERING DIVISION OFFICIAL curt PED-QP-5.2

   - QUALITY PROCEDURE FORM -                                                                      R7 PAGE 2 OF 3 EA-FC-%c11REV. No.1 Page No.L
                              .                                                        .Yes No N/A

13. . Have the affected documents, identified on the PED-QP-5.6 form been accurately marked up and included with a 10CFR50.59 (FC-154) evaluation (if appropriate)? /

14. Is the EA free of unconfirmed references and assumptions?. /

15.- Have all crossouts or overstrikes been initialed and dated by the Preparer / Reviewer? /

16. Is the EA legible and suitable for reproduction and microfilming? /

17. Has the EA Cover Sheet been appropriately completed? /

18. For Revisions only, is the change identified and the reason for the change provided on the Record of Revision Sheet? /

19. Does the computer run have page number and alphanumeric program l number on every sheet? /

20. Is the listing or file reference of the final computer input and output provided? 7

21. Is the computer code title and version / level properly documented in the EA? / j

22. Is the identification number (Ref. PED-MEl-23, Section 5.3.1) on the cover sheet as part of the EAs description? /

NOTE: Only applies to DEN Mechanical and Electrical /l&C Departments.

23. Are final computer runs correctly identified? #

24. Is the computer program validated and verified in accordance with NOD-QP-57 -

25. It me computer program was developed for limited or onetime use and not validated and verified in accordance with NOD-QP-5, has a functional description of the program, identification of the code (title, revision, manufacturer), identification of the software and brief user's instructions been documented in the EA? /

26. Is the modeling correct in terms of geometry input and initial conditions? /

j

PRODUCTION ENGINEERING DIVISION OFFICIAL Gur r, PED-QP-5.2 QUALIT( PROCEDURE FORM R7 PAGE 3 OF 3 EA-FC 9 CSIREV. No. 2_ Page No.10. YES NO N/A 27, If the analysis has identified a condition that may be outside the design basis of the plant, has a Condition Report been initiated? _/

28. Does Form QP-5.6 define the EA close-out requirements? ' /__ l NOTE: Applicable only to analysis of existing conditions.

NOTE: For all"No" responses, a written comment shall be documented on Comment Form PED-QP-5.5 briefly explaining the deficiency and, as appropriate, providing a suggested resolution. COMMENTS: (kt / 10 /r /91r $ viewer (s) Signature Date

      'h FN - M Ec H                           /

D:partment Organization

i. OFFICIAL WrI, PRODUCTION ENGINEERING DIVISION PED-QP-5.3 QUALITY PROCEDURE FORM R7 PAGE 1 OF 2 EA-FC-% 42 REV. No.1. Page No.1 EA INDEPENDENT REVIEWER CHECKLIST YES NO N/A

    '1. L Were the' INPUTS' correctly selected and incorporated into the EA?          /

2. Are the ASSUMPTIONS necessary to perform the EA adequately described and reasonable and appropriately documented? /

3. ' If applicable, have the appropriate QA requirements been specified?

4. 'Are the applicable codes, standards and regulatory requirements including issue and addenda properly identified and the requirements correctly applied in the EA? /

5. Is the approach used in the ANALYSIS section appropriate for the scope of the EA? - /

6. -Were the methods applied in the performance of the ANALYSIS appropriate? /

7. Has applicable operating experience been considered (e.g. for replacement parts / components, has NPRDS, INPO, NRC, industry experience been used supporting the application)? /

8. Have any interface requirements been appropriately considered (e.g.

between disciplines, Divisions, etc.)? / ]

9. Are the results and conclusions reasonable when compared to the purpose and scope? / \ p

10. Has the impact on Design Basis Documents, the USAR, and Operating documents been correctly identified and considered (including 10CRF50.59 reviews where appropriate)? /

11. Have all applicable licensing commitments regarding the subject EA been considered?

12. Does Form QP-5.6 define the EA close-out requirements? . /

I

PRODUCTION ENGINEERING DMSION PED-QP-5.3 QUALITY PROCEDURE FORM OFFICIAL Curl R7 PAGE 2 OF 2 EA-FC 'io Ut REV. No. 2_._ Page No._Il NOTE: For all *No" responses, a written comment shall be documented on Comment Form PED-QP-5.5 briefly explaining the deficiency and, as appropriate, providing a suggested resolution. COMMENTS: 9

                             /
     .T d.                    / #o / /qr    TVOJ-Ms:cd lydependent Reviewer (s)       / Date Department / Organization signature

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jQ-Oh Sk TV Containment SDBD-CONT-501 F:rt C:lhoun Station S ction 4 Omaha Public Power District {' 4.1.5.6 Liner Penetrations and Access Openings All penetrations through the steel-lined concrete structure for electrical conductors, pipe, ducts, air locks and hatch doors must be of double barrier design (Ref.1.4, Section 4.2.2). Containment penetrations must be designed to withstand normal environmental conditions prevailing during plant operation and to maintain their integrity following a DBA (Ref.1.1, Section 5.9.1). Normal environmental conditions during plant operation can be found in the Electrical Equipment Qualification Manual. Environmental conditions following a DBA can be found in USAR, Chapter 14. The penetrations and the liner reinforcement at ah penetrations must meet the design and fabrication requirements of the ASME Boiler and Pressure Vessel Code Section ill, Class B Vessels (Ref 1.1, Sections 5.5.3,5.5.4 and Section 5.9.2; and Ref. 5.2, Addendum 5, Page 2). Penetrations for piping and ducts must provide a structural anchor to the penetration sleeve on the inner side of the containment structure. The resulting restraint forces and moments from loads both inside and outside of containment must be included in the design of the penetration sleeve and sleeve anchorage (Ref.1.1, Section 5.5.4). For high energy piping, the forces and moments from a pipe rupture inside or outside the containment must also be considered to assure that the containment is not breached (Ref.1.1, Section 5.5.4; and Ref.1.2, Supplement 6, Question 23). See PLDBD-ME-10, Pipe Stress and Supports, for piping loads on penetrations. See PLDBD-ME-11, Internal Missiles and High Energy Line Break, for pipe rupture loadings on penetrations. The personnel air lock and the equipment access hatch must be designed and fabricated in accordance with the requirements of tile ASME Boiler and Pressure Vessel Code, Section Ill, n Class B Vessels. The air lock including both doors must be designed to withstand all

         )                           containment design conditions with either or both doors locked (Ref.1.1, Sections 5.9.4.1 and 5.9.4.2; and Ref. 5.1, Page H10-5 and H10-8).

The loaaing conditions for the above two components are the following (Ref. 5.1, Page H10-5):

a. A seismic load of 0.381 g horantally and 0.173 g vertically, concurrent with an internal negative pressure of 2.5 psig, and internal operating temperature of 120'F, and an extemal temperature of 50'F.

b. A seismic load of 0.381 g horizontally and 0.173 g vertically concurrent with an internal pressure of 60 psig, an intemal temperature of 284*F, and an extemal temperature of 50*F.

c. A containment test pressure of 69 psig at ambient temperr' *e.

d. Floor live loading of 200 psf coincident with loading conditions 'a', 'b' and'c' above.

./

21 of 22 Revision: 11 Date: 07/98

M '/o-op R2 15 Containment SDBD-CONT-501 j Fort C:lhoun St: tion S:ction 5 . Omaha Public Power District

5.1.1.2 Environmental Conditions The containment building is designed to withstand an intemal pressure of 60 psig at 305'F including all thermalloads resulting from the temperature associated with this pressure with a leakage rate of 0.1 percent by weight or less of the contained volume per 24 hours (Ref. 2.1, Criterion 10). See Section 5.1.5 for information detailing the structural design of the containment. The maximum pressure and temperature from a loss-of- coolant accident is , 59.3 psig and 285'F. These figures include the effects of the zirconium-water and other l chemical reactions and take no credit for the safety injection system. The effects from metal-water or other chemical reactions, including hydrogen buming, have been investigated and determined to cause temperatt.,,.:s and pressures less than the design temperatures and pressure even with the failure of emergency core cooling (Ref.1.1, Appendix G, Criterion 49). 5.1.1.3 Materials l The following materials were used in the construction of the containment. I e Concrete The strength of the concrete used in the construction of the containment structure is l documented by the results of the compression testing of conciete cylinders done during l the original plant construction. Sets consisting of five concrete cylinders were taken in ' accordance with ASTM C31, Making and Curing Concrete Compression Test Specimens in the Field, from the concrete used in the containment structure (Ref. 9.1). From each set, four of the cylinders were cured in the laboratory, one was cured in the field. The cylinders were then tested in accordance with ASTM C39, Compressive i Strength of Cylindrical Concrete Specimens, as follows: one laboratory cured cylinder I was tested at seven days and the remaining cylinders were tested at 28 days (Ref. 9.1). 9 The results of the compression testing are presented in a series of test reports (Ref. 7.1). Acceptance by the quality assurance group of the test reports indicates that the material properties for class A, B and C concrete meets the specified requirements. See the structural drawings listed in Attachment 6 for the locations of class A, B and C concrete in the structure.

Reinforcing Steel Reinforcing steel used in the mat was specified to ASTM A432, and that used in the superstructure of the containment was specified to ASTM A15. To ensure conformance, one bend and one tension test were performed per heat or mill shipment (whichever is smaller) for each bar size. (Ref.1.4, Supplement 6, Question 48). Acceptance of the test reports by the quality assurance group indicates that the material properties of the reinforcing steel meet the specified requirements. (Ref. 7.4 through 7.11) e Welding of Reinforcing Steel All Cadweld joint splices were made in accordance with manufacturers' instruction sheets entitled "Rebar Instructions for Vertical Column Joints" and "Rebar Instructions for Horizontal Joints," Enrico Products Catalog, RB10M368, page 29 and pages 31 through 34 inclusive (Ref. 5.1, page H3-2).

D ) 4 of 36 Revision: 12 Date: 07/98

Containment EH lD-0G " 16 SDBD-CONT-501 Fort Crlh:un Station S:ction 5 Omah Public Pow;r District ' ~ 5.1.2.2 Non-Safety Related Functional Design

?.

The containment building environment during normal plant operation is addressed in SDBD-VA-CON-139, Containment HVAC. Adequate floor drains are provided for any liquids on the building floors (Attachment 8, item 11). The processing of the drains is addressed in SDBD-WD-144, Waste Disposal Systems. 5.1.2.3 Design Conditions The system piping at penetrations and the containment isolation valves are designed to withstand tne maximum temperature and pressure experienced during normal operation, s transient conditions, and all postulated accident conditions (Ref. 9.21). The piping design pressure is also at least equal to the containment design pressure. The design conditions of system piping are addressed in the applicable SDBD. High temperature pipe is thermally insulated on the outside of the pipe in the air gap between the service piping and the penetration sleeve. Cooling fins are provided on the penetration sleeve to ensure that the temperature of the containment concrete is not excessive (Ref.1.1, Section 5.9.2). Heat transfer calculations were performed for the main steam piping penetrations using the electrical analog technique. The results show that fne temperature of the penetration sleeve at the hner is 140'F. A heat transfer calculation was prepared for the main steam line penetration only. This penetration has the highest expected continuous operating temperature for all penetrations. The purpose of the heat transfer calculation was to determine the impact that high temperature process fluids wi!! have on the surrounding concrete. The main steam line penetrations are therefore considered the limiting case based on the fact that these penetrations have the highest operating temperatures. The ex, penetration design temperatures are documented in USAR Figures 5.9-1 through 5.9-10.

   )                                     The design temperature as documented in the USAR figures for the main steam line penetrations is 545'F. (Ref. 8.73; Ref. 8.74; and Ref. 8.75) 5.1.3 Electrical Desian Refer to PLDBD-EE-21, Electrical Equipment, for the details of containment Sghting protection and grounding.

5.1.3.1 Safety Related Design All electrical penetrations are designed to provide a leak-tight barrier to maintain the integrity of the containment for all plant normal, accident and post accident conditions. The electrical penetrations are designed to a leak rate not to exceed 5 X 104 standard cc of helium per second, tested at 69 psig containment pressure for ten minutes (Ref. 7.23). All electrical penetrations were leak tested at the factory E.nd all penetrations successfully passed with the exception of penetrations E-5 and F-4. Penetration E-5 was accepted with a leak rate of 2.8 X 104 cc standard helium per second and penetration F-4 was accepted with leak rate of 5.2 X 104cc standard helium per second (Ret. 4.33). All electrical penetrations are COE (Ref.1.3, Part 11, Paragraph 4.1.2). Electrical penetrations with engineered safeguards circuits are designed to operate electrically during all plant normal, accident and post accident operating conditions. Refer to Electrical Equipment Qualification Manual for additional details. The electrical penetrations are arranged to meet the single failure criteria for electrical operation by routing different train related circuits through separate penetrations (Attachment 9, item 25).

a 16 of 36 Revision: 12 Date: 07/98

Containment SDBD-CONT-501 Fort Calhoun Station S:ction 10 Omaha Public Power District D 10.9.14 Research on Determining the Density of Sands by Spoon Penetrating Testing, Gibbs, H. J. and Holtz, W. G., Earth Laboratory Branch, Bureau of Reclamation, presented to the 4th international Conference on Soil Mechanics,1957. 10.9.15 Technical Specification Amendment No. 95, Fort Calhoun Facility Operating License No. DPR-40. NRC letter dated February 3,1986. 10.9.16 Analysis of Liner Panel of Fort Calhoun (Unit No.1) Containment Vessel, Final Report 311-C2125-02, by the Franklin institute Research Laboratory, Feb.,1969 (WIP No. 028708). 10.9.17 Analysis of Liner Panel of Fort Calhoun (Unit No.1 Containment Vessel, Preliminary Re F-C2125-1, by the Franklin institute Research Labo)ratory, Oct.,1967 (WIP No. 028648). port 10.9.18 Deleted j 10.9.19 Stress Report for Equipment Hatch, Revision A,12/26/68, by Byron D. Rail Consulting Engineer / (WIP No. 03159) and Revision C, 5/9/69 (WIP No. 053598). 10.9.20 Wind Forces on Structures, ASCE Paper No. 3269, Transactions of the American Society of Civil Engineers, Part II,1961. 10.9.21 OPPD Engineering Analysis EA-FC-90-082.M Potential Over Pressurization of Contaiment Penetration Piping Following a Main Steaml.ine Break in Containment", 10.9.22 DBD Open item Closure Package, Control No. 97-069, 03-14-97. 10.9.23 OPPD Engineering Analysis EA-FC-96-053, Resolution to Containment Liner Plate Attachment Capacity per NSC 96-0019, Rev 0,6/27/97 10.9.24 OPPD Engineering Analysis EA-FC-96-038, Current Revision, Reanalysis of Hydrogen

                              ' Generation in Containment.

10.9.25 OPPD Engineering Analysis EA-FC-90-034, Containment isolation Check Valve (SI-175, SI-176) Testing Requirements Response to EAR-89-007, Rev. O,03/21/91. 10.9.26 OPPD Special Services Engineering Containment Leak Rate Testing Program Basis Document. i I O 10 of 10 Revision: 12 Date: 07/98 i

Eg90-0 P3g 18 FORT CALHOUN STATION FC-154 FORM l NUCLEAR SAFETY EVALUATION R20 SEE NOD-QP-3 FOR INSTRUCTIONS { SECTION A 10 CFR 50.59 Applicability Screening ATTACH OR REFERENCE OTHER DOCUMENTS AS NECESSARY. _A.1 Activity identification Procedure Change No.: Procedure affected: Modification Request No.: [ ] Design [ ] Installation [ ] Testing E C N N o.: Temp Mod No: Other: USAR Revision , EA -FC (82 [rv. Z. Document

Title:

Section 5.9, Containment Penetrations & Section 5.13, General References A.2 What (specifically)is being done?

1) A typographical error (comprised) is being corrected to " compromised" in the last sentence of the last paragraph of Section 5.9.2.

2) The revision number (Rev.1) of Reference 5.13.13 (EA-FC-90-082) is being deleted as a result of revising the EA to Rev. 2. To circumvent the need for future such USAR revisions, the reference revision number will be deleted rather than updated.

Continued on Attachment Sheet [ ] A.3 Why is this being done? NOTE: PROVIDE AN ANSWER FOR EACH ITEM LISTED IN A.2.

1) To correct a typographical error.

2) Reference 5.13.13 was revised from Rev.1 to Rev. 2.

Continued on Attachment Sheet [ ] (SO-G-30, NOD-QP-3) PAGE 1

E R 10- Lu a 19 FORT CALHOUN STATION FC-154 FORM NUCLEAR SAFETY EVALUATION R20 SEE NOD-QP-3 FOR INSTRUCTIONS SECTION A 10 CFR 50.59 Applicability Screening ATTACH OR REFERENCE OTHER DOCUMENTS AS NECESSARY, A.4 Does the activity involve a change in the Facility, procedure, tests or [ ]YES experiments as described in the USAR? GO TO A.5 In accordance with the definition of the USAR, the Core Operating Limits Report (COLR), the Offsite Dose Calculation Manual (ODCM), the SECTION B Updated Fire Hazards Analysis (UFHA) and any other Reg Guide, REQUIRED document, drawing (P&lD), industry standard, etc., that is referenced in the description of the USAR is considered to be part of the FCS USAR. If the activity meets the criteria of a trivial change this may be answered NO provided that Nucipa censi is provided with a copy of all USAR changes and concurs d 41 flO-/ -7T The following USAR Sections / Figures are applicable: [X ] NO The change to Section 5.9.2 is to correct an obvious typographical error that GO TO A.5 does not affect the conclusions. This meets the criteria for being a trivial change. Reference 5.13.13, of Section 5.13, is referenced in Section 5.9.2. This meets the criteria for being a trivial change. Continued on Attachment Sheet [ ] (SO-G-30, NOD-QP-3) PAGE 2

WW 20 ' CZ FORT CALHOUN STATION FC-154 FORM NUCLEAR SAFET( EVALUATION R20 SEE NOD-QP-3 FOR INSTRUCTIONS SECTION A 10 CFR 50.59 Applicability Screening ATTACH OR REFERENCE OTHER DOCUMENTS AS NECESSARY. A.5 Does the activity conduct Tests or Experiments (STs, cps and [ ] YES Special Procedures, etc.) not described in the USAR that could degrade the margins of safety during normal operation or anticipated GO TO A.6 transients; or could degrade the adequacy of structures, systems or components (SSC) to prevent accidents or mitigate accident SECTION B j conditions? REQUIRED If the activity could potentially degrade margins of safety or the adequacy of SSCs to prevent or mitigate accidents, the answer is YES. ; if the activity is not a test or experiment, OR the activity could not [X ] NO degrade margins of safety or the adequacy of SSCs to prevent or mitigate accidents, the answer is NO. GO TO A.6 l l { Continued on Attachment Sheet [ ] l (SO-G-30, NOD-QP-3) PAGE 3

otra 21 FORT CALHOUN STATION EPF10 FC-154 As FORM NUCLEAR SAFETY EVALUATION R20 SEE NOD-OP-3 FOR INSTRUCTIONS SECTION A 10 CFR 50.59 Applicability Screening ATTACH OR REFERENCE OTHER DOCUMENTS AS NECESSARY. A.6 Could the activity adversely affect nuclear safety? YES ( ) CONSIDER SYSTEM INTERACTIONS AND JUSTIFY WHY THERE IS NO DEGRADATION OF ANY MARGIN OF SAFETY. GO TO A.7 Explain: SECTION B There are no system interactions involved with this change. This activity is a REQUIRED trivial change that has no effect on nuclear safety. NO [X) GO TO A.7 Continued on Attachment Sheet [ ] A.7 Does the activity involve a change to the Technical Specifications YES [ ] other than the Basis Sections? If the Technical Specifications must be revised prior to performing this GO TO A.8 activity the answer is YES. J If the activity meets the requirements of current Technical Specifications SECTION B the answer is NO. REQUIRED The following Technical Specification Sections / Figures are applicable: 1 None NO [X ) GO TO A.8 l Continued on Attachment Sheet [ ] (SO-G-30, NOD-QP-3) PAGE 4

FORT CALHOUN STATION FC-154 l FORM NUCLEAR SAFETY EVALUATION R20 l SEE NOD-QP-3 FOR INSTRUCTIONS I SECTION A 10 CFR 50.59 Applicability Screening ATTACH OR REFERENCE OTHER DOCUMENTS AS NECESSARY. A.8 Is the activity inconsistent with the Licensing Basis Document YES() (LBD)? EVALUATION If a LBD requires revision or the activity is inconsistent with the LBD, this REQUIRED Question shall be marked "YES" and a copy of the documents used to revise the LBD requirement should be attached. GO TO A.9 Comments: tJan.L. h M N u n2. / u & b y LBD ao a Auult q tb twauf clan , Qto NO[X ] GO TO A.9 Continued on Attachment Sheet [ ] A.9 10 CFR 50.59 Applicability Screening Conclusion if question A.4, A.5, A.6 or A.7 is answered Yes, the activity requires further evaluation. l Continue with FC-154 Section B. If A.7 (Tech Spec) is answered Yes the requirements of NOD-QP-7 also apply. If A.4 through A.7 are all answered No, the activity is not a 10 CFR 50.59 activity. l [X ] This activity is not a 10 CFR 50.59 activity. [] This activity requires further evaluation, FC-154 Section B is required. USQD Number (Obtain from PRC Secretary) We hereby certify that this Screening is complete and accurate to the best of our knowledge. Preparer (Print Name): Randy Lewis Extension: 6508 Signature: QL,M Date: l0flN3 R*., viewer (Print Name): E Qmtgg Extension: 6,7ig Signature: k4R Date: Io /'I 9s V (SO-G-30, NOD-OP-3) PAGE 5

FMO-CC gg 23 l FORT CALHOUN STATION - SECTION 5.9 UPDATED SAFETY ANALYSIS REPORT PAGE 1 OF 15 5.9' CONTAINMENT PENETRATIONS l l 5.9.1 General l l Containment penetrations were designed to withstand normal l environmental conditions prevailing during plant operation and to maintain their integrity following the DBA. Exterior portions of all containment penetrations, including access openings, are located in heated enclosures in tornado protected areas. Penetrations fall into three categories as follows: l

I

a. Pipe penetrations, including the fuel transfer tube; !

1

b. Electrical penetrations;

c. Access openings; the personnel air-lock and equipment access hatch.

Figures 5.9-14 and 5.9-15 locate and identify each containment ! penetration. For further clarity, Figure 5.9-16 locates and identifies the function of each electrical penetration. 5.9.2 Pipe Penetrations . 1 Piping penetrating the containment was designed for pressures at least equal to the containment design pressure. In addition pipe penetrations 1 were designed to withstand the greatest thrust the associated piping could l impose under rupture conditions. Lines which penetrate the containment l and contain high pressure or high temperature fluids (e.g. steam and i feedwater piping) were guided to prevent the whipping associated with the ] fracture of a line containing high internal energy, thereby preventing ) excessive forces and damage to the penetration. I All penetrations including valves are located in tornado protected areas and are protected against missiles generated within the containment, thus affording additional protection of the piping between the containment and the isolation valves. Containment isolation valves were provided in lines penetrating the containment to assure that no unrest 6Md release of radioactivity can occur (see Section 5.9.5). 1 R3 09/03/98

FORT CALHOUN STATION QC10-DO D y SECTION 5.9 l UPDATED SAFETY ANALYSIS REPORT PAGE 2 OF 15 l Penetration valves and blind flanges were designed to withstand the i highest temperature and highest pressure experienced during normal l operation, transient conditions, and all postulated accident conditions. Protection of each line, including main steam and feedwater, necessary to preclude pipe rupture between the penetration and the first valve, was accomplished by shortening the exposed length of pipe and installing the , first valve as close as possible to the containment internal or external wall l dependent upon valve operating and maintenance clearances. I Pipe penetrations were of several designs depending on the temperature ! and pressure of the fluid being carried, and on the size of the line. The ! various types of penetrations are shown in Figures 5.9-1 through 5.9-10.

High temperature pipe was thermally insulated on the outside of the pipe in i the air gap between the penetrating pipe and the penetration sleeve. , Cooling fins were provided on the penetration sleeve to ensure that the temperature of the containment concrete is not excessive. All penetration pipes were anchored to the containment to limit the I movement of the line relative to the containment. Bellows were provided I where necessary to accommodate relative movement between the pipe and i the containment shell. I The basis for penetration design was the ASME Boiler and Pressure Vessel l Code, Section lil, Class B, and therefore, the penetration structural and i leak tightness integrity is maintained. Local heating of the concrete immediately around the penetration develops compressive stresses in the , concrete adjacent to the penetration, and a negligible amount of tensile I stress over a large area. The mild steel reinforcing added around l penetrations distributes local compressive stresses to ensure overall I structural integrity. i An analysis has been performed of post-DBA thermally-induced i pressurization of liquid trapped between closed wntainmen'. isolation l valves. The ana'ysis concluded that pressure bounamy integrity of the l piping would not be comprised for penetrations susceptible to this phenomenon (Ref. 5.13.13). ( .n . ,. . ,

,.)

5.9.3 Electrical Penetrations Containment electrical penetrations were of the canister type furnished by l the manufacturer as fully assembled, factory tested units. Field installation only requires welding the canisters into penetration pipe stubs, and attachment of cables. R3 09/03/98

EM0mO 25R t%L ; FORT CALHOUN STATION SECTION 5.13 UPDATED SAFETY ANALYSIS REPORT PAGE 1 OF 1 5.13 General References 5.13.1 Technical Specification Amendment No. 95, Fort Calhoun Facility Operating License No. DPR-40. NRC letter dated February 3,1986. 5.13.2 IE Bulletin 80-11, Masonry Wall Design, May 8,1980. 1 5.13.3 NRC Safety Evaluation Report Supporting Technical Specification Amendment No.151, March 16,1993. 5.13.4 NRC Safety Evaluation Report Related to the Potential for Flooding From Postulated Ruptures of Non-Category I (Seismic) Systems, February 16, l 1978. ! 5.13.5 NRC Safety Evaluation Report Related to the Appendix J Containment Leak Testing Review, July 23,1982. 5.13.6 NRC Safety Evaluation Report Supporting Technical Specification Amendment No.139, November 15,1991. 5.13.7 IE Bulletin 77-06, Potential Problems with Containment Electrical Penetration Assemblies, llc 77-0152, December 2,1977. 5.13.8 IE Circular 77-11, Leakage of Containment Isolation Valves with Resilient Seats, September 6,1977. 5.13.9 IE Bulletin 80-08, Examination of Containment Liner Penetration Welds, LIC 80-0089, July 3,1980. 5.13.10 IE Bulletin 80-24, Prevention of Damage Due to Water Leakage inside Containment, LIC 81-0003, January 5,1981. 5.13.11 MR-FC-91-009 Sec. 5: Spent Fuel Pool Rerack 5.13.12 EA-FC-90-90, Feasibility Study; Structural Evaluation of Spent Fuel Pool for HDFS, 02/14/91. 5.13.13 EA-FC-90-082, Potential Ove- Pressurization of Containment Penetration Piping Following a Main Steam Line Break in Containment,W

                                                                              < (7v~prG l

t I R1 05/23/97 l

EA-FC-90-082 Rev. 2 TABLE OF CONTENTS Page No. I. PURPOSE 11 II. SCOPE 11 III. INPUTS TO THE ANALYSIS 12 IV. ASSUMPTIONS. 14 V. REFERENCES 16 VI. ANALYSIS 18 VII. CONCLUSIONS AND RECOMMENDATIONS 29 Attachment A 35 Allowable Pressure - Hoop Stress Attachment B 39 Allowable Pressure - Coincident Bending Attachment C. 41 Miscellaneous References Page 10

EA-FC-90-082 Rev. 2

.~'

27

   .I. PURPOSE Thisl report addresses the issue identified in Open Item 22 of SDBD-
   ' CONT-501, whichl states:
           "With 'some' penetrations, relatively cool liquid. is trapped between inside and outside containment valves.

A DBA would raise -the temperature and pressure of this trapped liquid. Analysis of .the temperatures and

          , pressures - that would occur within the piping during.

accident conditions could not . be found in the design basis database." This report documents review of possible overpressurization in water-filled containment' pipe penetrations due to a Main Steam Line Break (MSLB) or large break Loss of Coolant Accident (LOCA). This report will form the basis for closure of the above open item. II. SCOPE Mechanical containment piping penetrations are reviewed to determine if'any could potentially be overpressurized during the MSLB or LOCA temperature transient in containment. Items considered include normal operating and design' pressures and temperatures, whether the fluid is liquid or gas, and post-CIAS penetration valve position. Since incompressible liquid creates the possibility for overpressure, gas-containing penetrations are excluded from this review. For each penetration identified as a potential candidate for overpressurization, where the penetration isolation ~ valves are air-operated, a calculation was performed to determine peak pressure. Page 11

EA-FC-90-082 Rev. 2 gg 1 III. INPUTS TO THE ANALYSIS ] 1 l

1. In the event of a Main Steam Line Break (MSLB) or a Loss of )

Coolant Accident (LOCA) in containment, a temperature and pressure transient occurs inside containment due to the release of steam. The containment pressure transients for a MSLB (Reference 8) and LOCA (Reference 3) are presented respectively as Figures 14.16-3 and 14.16-1 in Section 14.16 of the USAR. The Containment Temperature Response is presented as Fig. 14.16-4 for the MSLB only. The saturated steam temperature associated with the peak MSLB pressure of 60 psig (which bounds the LOCA peak of 59 psig) is about 305*F. The' peak MSLB temperature of 420 F is due to superheating of vapor by SG tubes which become uncovered during boil out. Superheated temperatures occur only for the first 100 seconds of the transient. The greatest heat transfer coefficients, between the steam and the penetration pipe walls, will occur during condensation at saturated temperatures (superheat coefficients will be at least an order of mag.titude lower) and the metal will be simultaneously cooled by the interior h fluids. The thermal mass of the pipe and fluid will require a significant time (greater than 100 sec) to heat up. Therefore, the maximum pipe wall and fluid temperatures are not expected to exceed saturation temperatures. For purposes of this analysis, a containment atmosphere peak temperature of 300*F will be used for convenience in selecting material allowables and pressure ratings which are tabulated in increments of 50*F or 100*F.

2. The temperature transient causes the water trapped inside the )

penetration piping to heat up and expand. Since water is a j virtually incompressible fluid, the heatup of a static fluid volume (with no voids) would significantly increase the pressure in the closed volume and potentially overpressurize j the piping section. )

3. Penetration piping and isolation valve configurations are ,

taken from the USAR (Reference 4). The USAR figures also ! indicate normal, failure, and accident positions of the i isolation valves, as well as the safety signal that l repositions them. )

4. Normal operating temperatures and pressures, as well as design temperatures, were extracted from Design Basis Documents for !

the respective systems. Design information was confirmed by l Page 12 I 1 I

EA-FC-90-082 Rev.r2 cross-referencing to the CHAMPS database, valve specification sheets, and Contract 763 (Technical Specification Hl) where possible.

5. . Check valves provide inherent overpressure protection for penetration piping when a check valve is configured so that it lets expanding water escape from between the penetration isolation valves.

6. Air-operated globe or diaphragm valves can provide inherent overpressure protection for penetration piping. This can occur when water pressure under the valve plug is sufficient to overcome the force of the actuator holding it closed. A calculation was performed (Ref. 2) for each penetration identified as a potential concern, -to determine at what pressure " penetration's valve would open against its actuator.

7. The time required for significant thermal induced pressure stress to occur is large (due to the thermal mass of the pipe and contained fluid)in comparison to the short term dynamics of the pipe break that caused the elevated Containment a temperature. This precludes the possibility of these stresses A

occuring coincident with the transient primary bending stresses which might be created by the structural dynamics of the pipe break. 1 l Page 13 I l

i EA-FC-90-082 t Rev. 2 30 IV. ASSUMPTIONS I l

1. For penetrations not included in Ref. 17, no credit is taken for the time it would take for the containment atmosphere to heat up the penetration piping or the liquid inside. The temperature transient is assumed to be of sufficient duration and magnitude for the fluid to reach saturation temperature.

2. For penetrations not included in Ref. 17, no credit is taken for pipe insulation.

3. ' No ~ credit . is taken for heat transfer from the penetration piping outside containment to the ambient Auxiliary Building air.

4. Actual pipe pressures were calculated only for the penetrations in Ref. 17. For the others, it is assumed the trapped water .ietween air-operated isolation valves will create enough pressure to overcome the force of the valve actuator, and only the pressure required to force open the

    -penetration valve was calculated (Ref. 2). This is justified by the results of Reference 1, which determined that a large pressure increase (on the order of 2000 psi) would occur for a relatively small temperature increase (29 F) .

5. That primary bending stesses due to deadweight.and Maximum Hypothetical Earthquake (Load Combination 3 of Ref. 22)cccur coincident with the peak thermal induced primary membrane stress. To simplify the analysis, it will be assumed that the combined bending stresses are lthe maximum allowed by Load Combination 2 with the allowable based on a primary membrane stress due to design pressure. This simplification will allow demonstrating compliance of the penetrations with the Load Comination 3 criteria without having .to retrieve or derive .

actual bending stress data for each location. This will be ] accomplished by determining - the maximum allowed ratio of

primary membrane stress (due to thermal expansion of trapped j fluid) to its Load. Combination 3 allowable, by equating the bending allowables for Load Combinations 2 & 3, and comparing . this to the actual ratio.

6. That the piping between Penetrations M-9 & M-12 and their respective isolation valves is A106 Gr B material even though the- applicable Piping Class 602 specification (Ref. 25, p. H1-

16) permits A106 Gr A or B in 2" and under sizes. The code classification of this piping was upgraded, during original Page 14 .

EA-FC-90-082 Rev. 2 31 design, from Group I (USAS B31.1) to Group II, Class I, (USAS B31.7) (Ref. 25, Subsection 4.05, item d.). All purchase orders retrieved from the Design Basis Documentation database, for Group II, Class I or II small diameter piping, were for A106 Gr. B (Ref. 24). Certification data for the process pipes within the penetrations show them to be A106 Gr B (WIP files 14000 & 14003)and available Certification data for other lots of Group II piping show them to also be Grade B. The available certification data show these materials to have Yield and Tensile strength properties more than 15% greater than the minimums used as the basis for code allowables. l

Page 15 I

i EA-FC-90-082 Rev. 2 32 V. REFERENCES

1. Calculation FC05375, Rev. O, " Pressure Between Auxiliary Feedwater Penetration Valves After a Main Steam Line Break"

2. Calculation FC05525, Rev. B, " Containment Penetration Overpressure Analysis for M-7, . M-8, M-11, M-15, M-18, M-19, M-39, M-53, M-80 Post-LOCA or MSLB"

3. 'USAR Figure 14.16-2, Rev. 1

4. USAR Figure 5.9-13, Sheet 1 through 63

5. LER 90-09, Rev. O, " Potential Overpressurization of Auxiliary Feedwater Piping"

6. ANSI /ANS 56.2-1984, pp. 11-13

7. MR-FC-88-17, " Addition of a Third Auxiliary-Feedwater Pump"

8. USAR Figure 14.16-4, Rev. 1

9. SDBD-SL-135, Attachment 4, Rev. 0

10. CHAMPS Database

11. Steam Tables, Combustion Engineering 15th Printing, Reprinted from 1967 ASME Steam Tables

 ~12. SDBD-CONT-501, Attachment 18, Rev. 0
 -13. USAS B31.7-1968, " Nuclear Power Piping" l

14. USAS B16.5-1968, " Steel Pipe Flanges and Flanged Fittings"

15. Fisher Controls Test Certifications for HCV-206 and HCV-241

        -(WIP Nos. 3100 and 3106)

16. - CH-SMP-PR-0007, Reactor Coolant System Sampling Procedure

17. Calculation FC05994, Rev. 1, "Overpressurization Analysis of Penetrations M-7, M-9, and M-12 Under MSLB & LOCA Conditions"

[k ( Page 16 ;

F EA-FC-90-082 Rev. 2 33 I V. REFERENCES continued

 '18. :ASME.III-1986 18.1 Article NCA-2142
      -18.2 Article NC-7330 18.3 Article F-1200-18.4 Articles F-1420 and F-1430

19. ANSI /ANS 51.1-1983, " Nuclear Safety Criteria for the ' Design of Stationary Pressurized Water Reactor Plants"

20. ANSI N18.2-1973, " Nuclear Safety Criteria for the Design of Stationary Pressurized Water Reactor Plants"

21. Western Piping & Engineering Co., Inc., Containment Pipe Penetration drawing 69-6377, sheets.2 through 56, file nos.

18495 through 18549

22. USAR, Appendix F, Table F-1

23. Metals Handbook,. 9th Edition, Volume 3, Properties and Selection, Stainless Steels, ASM

24. DBD WIP file #'s: 14000, 14003, 35184, 58641, 58741, 58921, A 59078, 59365, 59550, 67834 %

25. Contract 763, Technical. Specification No. 1, Section H

26. MR-FC-89-036, Rev. 2, RMS Cart / Frame: 3113/1681 i

Page.17

EA-FC-90-082 Rev. 2 34 VI. ANALYSIS The construction code for process piping in containment pipe penetrations is USAS B31.7-1968. The penetration assemblies themselves were built as class B vessels per ASME III, except that data reports and stamping were not required. (Ref. 21) USAS B31.7-1968, paragraph 1-701.4.2 states:

      " Provision shall be made in the design te either withstand, relieve, or internally dissipate increased pressure caused by the heating of static fluid in a piping component."

This analysis contains a brief discussion of each mechanical penetration or group of similar penetrations. If a penetration is excluded from further analysis, the reason is given. Otherwise, the-results of the analysis are summarized. i In penetrations where the peak pressure could exceed the piping design pressure, the likelihood for a pressure boundary failure is evaluated to determine the need for overpressure protection. It is unknown at what point a pressure boundary failure will ultimately occur. The criterion used for the cressure boundary integrity evaluation, for LOCA and MSLB conditions, is specified in Ref. 22. Load Combination 3. because USAS B31.7-1968 contains no cuidance for other than desian conditions. This criteria permits primary membrane stress, for loads _due to Normal Operating + Pipe Rupture

+ Maximum Hypothetical Earthquake, to be slightly more than twice those for design conditions (see Table 1).      This is equivalent to (but less conservative than) the twice normal Faulted Condition allowables (for loadings which include . LOCA and MSLB) of ASME Section III (Ref. 18), which is referenced for the additional guidance it provides. In addition to primary membrane stress,          -

primary bending stresses are limited by the criteria of Ref. 22. The bending stress allowable depends on the ratio of primary membrane stress to its allowable and becomes smaller with increasing ratios. Primary bending stresses will, therefore, be i evaluated for the penetrations having the largest membrane stress ratios. The potential for thermal. overpressure is associated with a large , break LOCA or MSLB inside containment, either of which is . considered to be a faulted condition (Refs. 19, 20). Level D Service Limits in ASME III are associated with faulted conditions. Page 18 i

l-l EA-FC-90-062 I 35 Rev. 2 Ref.-18.1 states:

            "These sets of limits permit gross general deformations with.some consequent loss of dimensional stability and              l damage requiring repair, which may require removal of the i

component from service. Therefore the selection of this j limit shall be reviewed by the owner for compatibility l with established system safety criteria." j i The Owner needs to confirm that the safety function of a given

{ system;or component-will'be satisfied with the Level D Service Limits applied. In the case of containment penetrations, pressure boundary integrity needs to be maintained and/or a containment leakage path is not created.

      'Ref. 18.3 states:
            "The Level D Service Limits...are intended to assure that violation of the pressure retaining boundary will not occur..."

Per Ref. 18.4, the maximum allowable internal pressure allowed for a faulted condition is two times the pipe or valve pressure rating. This will be used as a guideline to ascertain the likelihood of pressure boundary failure. If the peak internal pressure in a penetration does not exceed this guideline, it is concluded that the penetration will withstand the transient without a pressure boundary failure and the penetration's safety function is maintained. M-HCV-383-3-and M-HCV-383-4. Containment Sumo Recirculation HCV-383-3 and HCV-383-4 are normally closed, fail as-is, and are opened by RAS. The upstream piping is open to containment atmosphere via - strainers SI-12A/B. There is no trapped volume between isolation valves to evaluate, which excludes these penetrations from further review. M-2. Letdown Heat Exchancer HCV-204 and TCV-202 are normally open, fail closed, and are closed by CIAS. The piping between the two valves is protected by relief valve CH-223, setpoint 600 psig. The relief valve will prevent thermal expansion from exceeding the piping design pressure. The presence of the relief valve excludes this penetration from further review. Page 19

EA-FC- 90-0 82 Rev.1 2 M-3. CVCS Charcina 1 This penetration is.the normal charging path to the RCS via the I regenerative heat exchanger CH-6. ~ Check valve CH-198 is located on the Auxiliary Building side of this penetration. Charging line isolation valves (HCV-238, HCV-239, HCV-248, HCV-249) inside ) containment are not automatically isolated by any ESF signal. With I these valves open, the piping downstream of CH-198 communicates directly with the RCS . via check valves CH-203 and CH-204, which allow expanding fluid to flow to the RCS. HCV-238 and HCV-239 may be closed by post-LOCA Operator action if/when all charging pumps a're shut down. In that event, spring-loaded check valve CH-202 allows expanding' fluid in this piping to flow to the RCS when a 250 psi differential exists across the valve. The presence of check valves CH-203 and CH-204, and spring-loaded check valve CH-202 exclude.this penetration from further review. M-5 and M-6. Safety Injection Isolation valves HCV-2987 and HCV-306 are locked open at all times. Post-accident operating modes of the SI system exclude these penetrations from further review.

   'M-7. RC Pumo Seal Bleedoff Both isolation valves HCV-241 (inside) and HCV-206 (outside) are normally~open, fail closed, and are closed by CIAS. RCP bleedoff is normally controlled to 100-140 F and 60-65 psig. During MSLB or LOCA conditions, the water between HCV-241-and HCV-206 could be
   -heated, causing pressure to increase until HCV-206 is forced open against its actuator spring.- Reference 2 shows that HCV-206 will be' forced open when upstream pressure reaches 6122 psig. This pressure;is well in~ excess of the piping design pressure, however Attachment A shows that the 1" sch. 160 pipe pressure rating is
   .7675 psig at 300*F. Since the rating exceeds 6122 psig, no piping pressure boundary failure is expected to occur. In addition, from the analysis of Attachment B, it can be seen that the ratio of peak pressure to allowable is less than that allowed with a coincident maximum allowable primary. bending stress.

The. valves in penetration M-7 are HCV-241 and HCV-206. HCV-241 is a'2500#, 316SS_ Fisher DBQ globe valve. HCV-206 is a 1500#, 316SS Fisher DBQ globe valve. Valves meet or exceed the pressure ratings of the comparable class of flanged fittings. Per Ref. 14, the Page 20

F EA-FC-90-082 Rev. 2 37 1 2500# pressure rating at 300 F for 316SS material is 5690 psig. The 1500# pressure rating for 316SS material is 3415 psig at 300 F and 3600 psig at 100*F. The most limiting rating is for HCV-206 (3415 psig), and double this rating is 6830 psig. The pressure at which HCV-206 is forced open is less than double the 300 F pressure rating, so.it is concluded that no pressure boundary failure will occur (Ref.'17). It is probably more likely that HCV-206 would start to leak by and limit the overpressure rather than holding virtually leak-tight to the point where it is forced open by pressure under the seat. HCV-241's packing would be exposed to the pressure within the penetration, and packing leakage in HCV-241 could also serve to limit the overpressure. M-8. Containment Sumo to WDS Both isolation valves, HCV-506A/B, are located outside containment. These valves are normally open, fail closed, and are closed by CIAS. Backflow through the sump pumps WD-3A/B is prevented by check valves WD-820: and WD-821, therefore a trapped volume of water inside containment could occur between the pump discharge check valves and HCV-506A. Reference 2 shows that HCV-506B would be forced open at a pressure of 220 psig. This assumes the discharge check valves on.the sump pumps are leak-tight enough to enable the pressurization to occur in the first place, which is not assured. Attachment A shows that the 2", sch. 10S pipe has a pressure rating of 1643 psig at 300 F, so no piping pressure boundary failure would occur. The valves in penetration M-8 are 150#, 316SS valves. The valve , pressure rating meets or exceeds the Ref. 14 pressure rating for j that class of flange. Per Ref. 14, a 150#, 316SS flange is rated { for 210 psig at 300*F. Thus, if the penetration M-8 piping was ! pressurized to 220 psig at about 300"F, the valve pressure rating f would be exceeded by less than 5%. Design margins for piping i components are such that an overpressurization of less than 5% i above the B16.5 pressure rating does not create a significant I potential for a pressure boundary failure. M-9 and M-12. Steam Generator Drains These penetrations are drains for the steam generators with manual, locked-closed valves inside and outside containment. They can also be used as alternate blowdown flow paths. The only procedure which opens these valves is OI-FW-6 (SG Draining), and using these valves is an option (i.e. not the primary means) if the normal blowdown Page 21 I J

EA-FC-90-082 Rev. 2 path is not used for some reason. This evolution would be 38 performed with the plant in cold shutdown. j ( The isolation valves on each end of this penetration are subjected l to steam generator blowdown tunperatures during normal plant j operation, so the temperature of the water in between would j probably be somewhat elevated. However, an accident-induced ! thermal overpressure could occur if the isolated water volume temperature was normally significantly below the peak accident containment temperature. Since the isolation valves are locked-closed manual valves, they j would not be forced open at some point like air-operated globe j valves on other penetrations. Ref. 17 performed a detailed analysis of the transient in these penetrations. The maximum calculated peak pressure occurred under LOCA conditions (2404 psig for M-9 and 2107 psig for M-12). This is below the maximum allowable pressure of 2630 psig (double the valve 300 F pressure rating), therefore the results indicate that the penetration would I withstand the transient without a pressure boundary failure. It is l probably more likely that a valve would start to leak by and limit the overpressure rather than holding virtually leak-tight to the , point of the calculated peak pressure. In addition, the ratios of l peak pressure to allowed pressure (0.51 and 0.44) are less than the 1 maximum allowed (see Attachment B) imposed by assuming a coincident j maximum allowable primary bending stress (Assumption 5). By 1 inspection of Table 2, it can be seen that these ratios bound those which would be calculated for all other penetrations addressed by this analysis. M-10 and M-13, Steam Generator Blowdown The isolation valves for these penetrations are normally open, fail l closed, and are closed by CIAS. The fluid carried in these pipes is at approximately 535'F (Ref. 9) which is higher than the peak containment temperature of 307*F (based on saturated steam at 60 psig, Refs. 3, 8, 11). The transient will have no heatup effect on these penetrations and they are excluded from further review. M-11 and M-15. CCW To/From Nuclear Detector Well Coolers These penetrations are equipped with normally open, fail closed isolation valves inside and outside containment which are all closed by CIAS. The valves are HCV-467A/B (on M-15) and HCV-467C/D Page 22

EA-FC-90-082 Rev. 2 39 -(on M-11). Reference 2 shows that penetration M-15 would experience a pressure of 539 psig if one of the cooler inlet valves (HCV-4 69A or HCV-468A) was open due to the presence of a relief l valve on the inlet side of each cooler. The analysis also shows that penetration M-11 would experience a pressure of 443 psig. These pressures exceed the- piping design pressure, however Attachment A shows that the pipe pressure rating is 2257 psig at 300*F for the 1.5" sch 40 pipe. Since this rating exceeds 539 psig, no piping pressure boundary failure would occur. Ref.10 indicates that HCV-467A/B/C/D are all 600#, Fisher ES globe valves. This has been verified in the field by the System Engineer. The manual valves (AC-857 and AC-858) on these penetrations are also 600# valves. Their pressure rating (per Ref.

14) is 1365 psig at 300 F, which exceeds the 539 psig and 443 psig calculated pressures for these penetrations, so no valve pressure boundary failure would occur.

M-14. RCDT Vent to WDS, and M-25. RCDT Sampling This piping connect directly to the RCDT vent line in containment. This line normally contains gas,_ not liquid, as the piping for these two penetrations runs to the waste gas vent header and the waste gas analyzer. This excludes these penetrations from further review. M-16, Shutdown Coolina from RCS This penetration is protected by a thermal relief valve which will prevent liquid thermal expansion from exceeding piping design pressure. Therefore, this penetration is excluded from further review. M-17. LPSI to RCS This penetration is equipped with a thermal relief valve inside containment. This will prevent liquid thermal expansion from j exceeding piping design pressure in the event the accident is not

large enough to allow LPSI flow into the RCS. This penetration is therefore excluded from further review. ; M-18 and M-19. CCW To/From RCP Lube Oil & Seal Coolers and CEDM Page 23 l l

EA-FC-90-082 Rev 2 40 Seal Coolers These penetrations are equipped with normally open, fail open isolation valves inside and outside containment (HCV-438A/B on M-19, ~and HCV-438C/D on M-18). These valves are closed by CIAS coincident with low CCW pressure. Reference 2 determined that penetration M-18 will reach 233 psig and penetration M-19 will reach 330 psig before respective valves are forced open against their actuators. These pressures exceed the piping design pressure, however Attachment A shows that the pipe pressure rating is 1219 psig at 300 F for the 6" sch 40 pipe. Since this rating exceeds 330 psig, no piping pressure boundary failure would occur. The 300 F pressure rating for these 150# valves is 210 psig. The peak M-18 pressure of 233 psig is only about 5% above that pressure rating, so no valve pressure boundary failure on penetration M-18 is likely to occur. A valve pressure boundary failure is also unlikely on penetration M-19. Ref. 14 contains a hydrostatic test requirement of 1.5 times the 100 F pressure rating, rounded up to the next 25 psig increment. This would require a 425 psig hydrostatic test pressure on a 150# valve. This demonstrates the design margin in these components, and this indicates that a 330 psig pressure in penetration M-19 would not result in a pressure boundary failure of the valve. The peak pressure is also well below the " double the pressure rating" evaluation criteria discussed at the beginning of the Analysis section. M-20. RCDT Pump Discharge to WDS This penetration is equipped with two normally open, fail closed isolation valves that close on CIAS (HCV-500A/B). Both isolation valves are located outside containment, so the piping between them is not exposed to containment temperature. The RCDT pump discharge header inside containment ties back to the tank inlet loop seal via a 1/8" stainless steel tube and valve WD-1138 (normally open per OI-WDL-1). This tube was originally installed to keep the RCDT inlet loop seal full of water. WD-1138 was added to enable isolation of the tube while draining refueling cavity water to the SIRWT using the RCDT pumps. This tube also provides a path for thermally expanding water in the piping located between the pump discharge check valves and the first penetration isolation valve. The presence of this tube excludes penetration M-20 from further review. Page 24

r EA-FC-90-082 Rev. 2 M-22. SI To/From Leakace Coolers This-penetration.is equipped with isolation valves both inside and outside containment that are closed by CIAS (HCV-2983) or SIAS (all isolation valves inside containment). The piping between the isolation valves is protected by relief valve SI-222, setpoint 350 , psig, which would prevent thermally expanding water from exceeding I the piping design pressure. This excludes this penetration from , further review. M-24. Pressurizer Ouench Tank Samplino This penetration-is equipped _with two normally open=, fail closed isolation valves located outside containment which are closed by CIAS. The piping between isolation valves for this penetration is therefore not exposed to containment temperature. The piping inside containment is connected to the Pressurizer Quench Tank vent line,1which is equipped.with relief valve RC-125, setpoint 70 psig. { This'line is also normally full of gas, not liquid, as it runs to i the waste gas analyzer. These factors exclude this penetration from further review. I M-25. M-30. M-31. M-38. M-40. M-42. M-43. M-44. M-46. M-47. M-48. M-50. M-51. M-52. M-57. M-58. M-69. M-73. M-74. M-87. M-88 These penetrations do not contain liquid during normal plant operation and are excluded from further review. M-39 and M-53. CCW'To/From SI Leakage Coolers

   -These penetrations have normally open isolation valves both inside and outside containment which are closed by CIAS (HCV-425A/B on M-     ;

39, and HCV-425C/D on M-53). Reference 2 determined that I penetration M-39 will reach a pressure of 315 psig if at least one of the cooler inlet valves is open. This is due to the presence of a relief valve on the inlet of each cooler. Penetration M-53 will reach a pressure of 227 psig. These pressures exceed the piping ; design pressure, however Attachment A shows that the pipe pressure ! rating is 1531 psig at 300*F for the 4" sch 40 pipe. Since this rating exceeds-315 psig, no piping pressure boundary failure would ) occur. I The situation with these penetrations is very similar to that on Page 25

EA-FC-90-082 ; Rev. 2 4g penetrations M-18/M-19. The peak pressures are also comparable. Refer to penetration M-18/M-19 section for further discussion. M-45. RCS Sampling This penetration is equipped with normally closed, fail closed isolation valves located inside and outside containment which are closed by CIAS (HCV-2504A/B). This piping (actually tubing) carries reactor coolant at a temperature exceeding post-LOCA or post-MSLB containment atmospheric temperature during times when the RCS is being sampled (Refs. 9, 16). Reactor coolant is typically allowed to flush through the sample line to the VCT for 30 minutes before the sample bomb is isolated. The step for isolating HCV-2504A/B follows immediately after that. When the containment isolation valves for this penetration are closed following sampling, hot reactor coolant is trapped in between because the sample heat exchanger is located outside containment. The liquid between the valves will cool and shrink. If a LOCA or MSLB occurs while the RCS is_not being sampled, the cooled liquid would be reheated by the containment atmosphere. However, no thermal overpressure will occur because the external heating of the sample

   -line will'only cause the liquid in between he valves to regain most of its former volume.        This eliminates this penetration from further evaluation.

M-49 and M-63. Steam Generator Blowdown Samoling l These lines carry steam generator blowdown water which is at a temperature exceeding post-LOCA or post-MSLB containment atmospheric temperature. Blowdown is continuously sampled, therefore these penetrations are excluded from further review. M-75. M-76. M-77. M-78. M-82. M-83. M-84. M-85. CCW To/From Containment Air Coolers VA-1A/B. VA-8A/B The isolation valves for these penetrations are normally open or opened-by-CIAS. Since they are not auto-closed on CIAS, there is e no trapped volume of concern inside containment. Even if these . I coolers were isolated by operator action, all isolation valves are located outside containment and each cooler and related piping inside containment is protected by a thermal relief valve. This excludes these penetrations from further review. Page 26

EA-FC-90-082 Rev.-2 43 M-79, Pressurizer Quench Tank DW Fill and Makeun This penetration is equipped with two normally closed, fail closed isolation valves located outside containment which are closed by CIAS. The valves are only opened for makeup to the PQT. The piping between the isolation valves is not exposed to containment temperature. Check valve DW-163 allows for thermal expansion of liquid in the line inside containment to the PQT. As stated previously for penetration M-24, the PQT is equipped with relief valve RC-125, setpoint 70 psig. These factors exclude this penetration from further review. M-80, DW Suoplv to Containment This penetration has two normally closed, fail closed isolation both located outside containment which are closed by CIAS (HCV-1559A/B). These valves are only open when DW is required in containment during outage periods. If the DW piping is drained inside containment prior to startup, no overpressurization can occur. However, this is not normally done, so a closed volume of DW piping-exists in containment. Ref. 2 determined that the maximum pressure required to lift one of these diaphragm valves is 214 psig, and that is with the DW line outside containment completely depressurized. If the DW line is at its normal 40 psig pressure (which is more likely), the containment-side line pressure required for valve lift is 174 psig. In either case, no piping or valve pressure boundary failure would occur. The peak pressure is below the 300"F pressure rating for the piping (per Attachment A), and is not significantly above the 210 psig valve pressure rating (150# valve at 300*F) . 1 J M-86 and M-89. Containment Spray These penetrations are open to the containment atmosphere via the ) containment spray headers. If any liquid is present in the lines, i check valves allow expansion to containment and prevent thermal- I induced pressurization. Therefore, these penetrations are excluded from further review. M-91 and M-97, Auxiliary Feedwater to Steam Generators These penetrations are equipped with thermal relief valves to Page 27 l 1

EA-FC-90-082 Rev.^2 fg protect them from.overpressurization as a result of the MSLB or LOCA containment temperature transient (Reference 7). Therefore, these penetrations are excluded from further review.

M-93. M-94. M-95'.-and M-96. Main Steam and'Feedwater

The normal temperature of the main steam and feedwater contained in these penetrations is higher than the peak LOCA or MSLB containment temperature.. Therefore, the temperature transient will not have a heatup effect on these penetrations and they are excluded from further review.

9 Page.28

1 i l EA-FC-90-082 { Rev. 2 VII. CONCLUSIONS AND RECOMMENDATIONS I I The external heating of piping by the post-LOCA or post-MSLB containment atmosphere has been determined to create the potential for exceeding the process piping design pressure for eleven containment penetrations. The results for these penetrations are summarized in Table 2 at the end of this section. The table shows that in no case does the peak pressure exceed the faulted allowable pressure (two times pipe or valve pressure rating) set forth at the beginning of the Analysis section. In addition, for the bounding penetrations, the ratio of peak pressure to allowable pressure is less than that imposed by assuming a coincident maximum allowable primary bending stress (Attachment B) . It is therefore concluded that these eleven penetrations are in compliance with the criteria of USAR Appendix F, Table F-1 and will withstand the transient without a pressure boundary failure. USAS B31.7-1968, paragraph 1-701.4.2 states:

      " Provision shall be made in the design to either withstand, relieve, or internally dissipate increased pressure caused by the heating of static fluid in a piping component."

Section 5.9.2 of the USAR states:

      " Penetration valves and blind flanges were designed to withstand the highest temperature and highest pressure during normal operation, transient conditions, and all postulated accident conditions."

Since it has been concluded that the eleven penetrations will withstand the thermal transient from a LOCA or MSLB without a pressure boundary failure, overpressure protection provisions are not required on these penetrations to satisfy the above Code requirement or USAR statement. USAS B31.7-1968, paragraph 1-702.2.1 states:

      "Where standard components are used, the pressure ratings given as functions of temperature in the appropriate           )

standards listed in Table 1-726.1 must not be exceeded." The " standards listed in Table 1-726.1" included USAS B16.5-1968 (Ref. 14). The ratings in this standard apply to valves on the j i l Page 29

ra EA-FC-90-082 Rev. 2 g eleven penetrations. The table at the end of this section shows that the LOCA/MSLB thermal transient could cause internal pressures to exceed the valve pressure ratings for penetrations M-7, M-8, M-9, M-12, M-18,'M-19, M-39, M-53,.and M-80. This would suggest that overpressure protection provisions are required on these penetrations to meet the requirement of USAS.B31.7-1968, paragraph rl-702.2.1. However, this B31.7 paragraph does not specify the plant conditi'ons which apply to its provisions. For guidance in this regard, a later Code was reviewed. USAS B31.7 was superseded by ASME III. ASME III is more prescriptive than B31.7 regarding overpressure protection. ASME III specifically states that it does not provide rules for overpressure protection of system faulted conditions (Ref. 18.2). The accidents of interest are a large break LOCA and a MSLB inside containment, both of which fall into the category of a faulted condition (Refs. 19, 20). Thus, per ASME III guidance, protection from overpressure due to a large break LOCA or MSLB is not required. Based on the approach of ASME III, which superseded B31.7, it is concluded that paragraph .1-702.2.1 of B31.7 was not intended to apply-to faulted conditions. Therefore, it is concluded that overpressure protection provisions are not required to be installed on these penetrations to meet B31.7 Code requirements. The possibility of a thermal overpressure exceeding piping design pressure.can easily be' eliminated for penetration M-80'without a configuration change. Thermal overpressure can be avoided by draining and. venting the DW piping in containment at the end of each refueling outage to provide a path for thermally expanding liquid in this penetration. A thermal' overpressure in penetrations M-9 and M-12 could also be precluded procedurally. One method would.be to use this flow path for'SG draining during each refueling outage and allow air or N2. cover gas to enter the line prior to closing the manual isolation valves. This . would make the' penetration gas-filled (i.e. compressible; fluid) instead of water-filled (incompressible fluid) .

  'Another method would be to place this flow path in service for a short. time once blowdown has been established. This would fill the penetration with high temperature fluid.       After isolation, the trapped liquid volume would shrink if any significant cooling took place. Since a LOCA or MSLB temperature transient would reheat this    volume to a. temperature lower than normal blowdown temperature, the water in the penetration piping would regain some, Page 30

EA-FC- 90-p'B 2 Rev. 2 47 but not all, of its former volume and a thermal overpressure would not occur. Page 31

EA-FC-90-082 Rev. 2 Table 1 4b Faulted Primary Stress Allowable St vs Design Primary Stress Allowable Su Mater A 106 Gr B m A376 TP 304 23 A376 TP 316(23 Temp 75 F 800 F 75 F 800 F 75 F 800 F Su (ksi) 60 60 85 60 85 70 Sy [ksi) 35 23.3 35 20 35 25 su '33 20.0 15.5 23.3 18.0 23.3 22.5

 .[ksi]

St W. 43.3 35.5 51.7 33.3 51.7 40.0 [ksi) St /s u 2.17 2.29 2.22 1.85 2.22 1.78

 @3g F            2.21                2.11                2.08

[

 @650 F     2.27 vs 2.18 m      1.93 vs 1.92 m     1.87 vs 1.90 m Notes:
      .(1) Su and Sy from Ref. 13, App. A, Table A.1 & Table A.3 (Su
           @ 800 F is assumed to be the same as at 75 F per note (2) of Ref. 22, Table F-1 (cont'd))

(2) So and Sr from Ref. 23, Fig. 21, p. 205 (3) Derived in accord with Ref. 13, Sect. 1-702.3, p. 12 (4) Derived in accord with Ref. 22, Table F-1 (cont' d) (5) Derived from values of Ref. 22, Table F-1 (cont'd) for

comparison 1 (6) 300 *F is the peak Containment saturated temperature following a MSLB and is therefore used as the basis for the penentration material allowable for this analysis Page 32 I

EA-FC-90-082 Rev. 2 Table 2 40 h_. 2x 2x - Valve Pipe Valve Shop Pen. 300*F 300*F Prost No. P P P " T'

Pocsrcs

                            ,           g 3jo        gIa M-7         2580          6122       15350        11380      HCV-241   9000 "0TE 5                                6830       nev-20s   5400 M-8         150.          220       '3286         420                  425 NOTE 6 M-9         1000 NOTE 9 2404       4756         2630                 2225             k M-11.       150           443        4514         2730                 -

NOTE 7-M-12 1000 NOTE 9 2107 4756 2630 2225 d M-15 150- -539 4514 2730 - NOTE 7 M-18 150 233 2438 420 425 NOTE 7 M-19L 150 330 2438 420 425 NOTE.7' M-39~ 150- 315 3062 420 425 i NOTE 7 l

M-53 150 227 3062 420 425 NOTE 7 M-80 '_150 214 2980 420 425 NOTE 8 NOTES:

1. For penetrations M-9 and M-12, this is the peak pressure calculated in Ref. 17. For the other penetrations, this is the pressure at which an air-operated penetration isolation valve is forced open against its actuator,.as calculated in Ref. 2.

2. - The pipe pressure rating is calculated in Attachment A.

3. Valve pressure ratings meet - or exceed ratings for comparable class of flanged fittings, per USAS B16.5-1968. For' penetrations M-9 and M-12, the rating is from Ref. 17.

4. Valve shop hydrotest - pressure per USAS B16.5-1968, section 8.3, is 1.5 times 100*F pressure rating, rounded up to next 25 psig increment.

Page 33 j

F~~ l 1 EA-FC-90-082 Rev. 2 50

5. Design pressure from original code hydro test CH-11. I

6. Design pressure not documented. Assumed to be 150 psig, consistent with I other class 151 piping systems. l

7. Design pressure from SDBD-AC-CCW-100.

8. Design pressure from isometric drawings IC-371.

9. Design pressure from MR-FC-89-036 Construction Package, p. 4-1 (Ref. 26). A However, the design pressure for the applicable Pipe Class 602 is 600 psig /2 i (Ref. 25, p. H1-16). I Page 34

EA-FC-90-082 Rev. 2 51 AT.TACHMENT A Pipe' Pressure Ratings for Selected Penetrations Pipe pressure: f ratings will be calculated 'using the following equation from section, 1-704.1.2 of USAS B31.7-1968: P = 2 (S_) (t_ - ai D - 2 y ( t, - a ) NOTE: This is the same equation contained in ASME III-1086, Article NB-3641, which is referenced by ASME III, Article F-1430 (Ref. 18.4) where: P = Pipe pressure rating (psig) S. = allowable stress intensity (psi) at the given piping temperature (assumed to be 300*F), _from Table A.1 of USAS B31.7-1968 t, = minimum piping wall thickness (inches) This equals the standard piping wall thickness less a 12.5% allowance for fabrication tolerance. a = allowance for erosion / corrosion (inches) This is assumed to be zero, because the liquids are clean, and either a corrosion inhibitor is used (i.e. CCW) or the piping is stainless steel. D. = piping outside diameter (inches) ) Y = 0.4 Page 35

l EA-FC-90-082 i Rev. 2 52 A T T.A C H M E'N T A Pipe Pressure Ratings for Selected Penetrations Penetration M-7 l" sch 160,. ASTM A376 Type 316SS S = .20.0 ksi at 300 F D = 1. 315" t'= 0.25" t, = 0. 875 (0. 25) = 0.21875" P = 2(20.000)(0.21875) 1.315 - 2(0.4)(0.21875) P = 7675 psig at 300 F 3/4" sch 160, ASTM A376 Type 316SS S = 20.0 ksi at 300 F D, = 1. 0 5 " ' t = 0.219" t, = 0. 875 (0. 219) = 0.191625" P = 2(20.000)(0.191625) 1.05 - 2(0.4)(0.191625) P = 8548 psig at 300 F

 . Penetration M-8 2" sch 10s, ASTM A312 Type 304SS S = 19.8 ksi at 300*F D = P, . 375"        t = 0.109"      t, = . 0. 87 5 (0.109) = 0.095375" P      =          2(19.800)(0.095375) 2.375 - 2(0.4)(0.095375)

P = 1643 psig at 300*F 3 Page 36

EA-FC-90-082 Rev. 2 ATTACHMENT A Pipe Pressure Ratings for Selected' Penetrations Penetrations M-9. M-12 - 2"'sch 40, ASTM A106 Gr B S = 20 ksi at 300 F D = 2. 375" t = 0.154" t, = 0. 875 (0.154 ) = 0.13475" l P = 2(20,.2)O)(0.13475) 2.375 2(0.4)(0.13475) P = 2378 psig at.300 F ;

Penetrations M-11. M-15 1.5" sch 40, ASTM A106 Gr A or B (assume Gr A, which has lower S.) S = 16 ksi at 300*F l D ' = 1. 900" t = 0.145" t, = 0. 8 75 (0.14 5) = 0.126875" ! P = 2(16.000)(0.126875)' 1.90 - 2(0._4)(0.126875)' P = 2257'psig at 300*F j Penetrations M-18. M-19 6" sch 40, ASTM A106 Gr A or B (assume Gr A, which has lower S.) S, = 16 ksi at 300*F di Do = 6.625" t = 0.280" t, = 0. 875 (0.280) = 0.245" 1 P = 2(16.000)(0.245) 6.625 - 2(0.4)(0.245) ' l P = 1219 psig at 300*F Page 37

4 EA-FC-90-082 Rev. 2 54

                           ' ATTACHMENT              A Pipe Pressure Ratings for Selected Penetrations Penetrations M-39. M-53 3" sch'40, ASTM A106 Gr A or B (assume Gr A, which has lower S.)                  k 5 = 16 ksi at 300*F L = 3. 500"           t = 0.216"       t, = 0. 875 (0. 216) = 0.189" P       =          2(16.000)(0.189) 3.500 - 2(0.4)(0.189)

P = 1806 psig at 300 F 4" sch 40, ASTM A106 Gr A or B (assume Gr A, which has lower S.) /k S, = 16 ksiL at 300*F D, - 4 . 5 0 0 " t = 0.237" t, = 0. 875 (0.237) = 0.207375" P = 2(16.000)(0.207375) 4.500 - 2(0.4)(0.207375) P = 1531 psig at 300*F

Penetration M-80 2" sch 10S, ASTM A312 Type 304SS , S, = 19. 8 ksi at 300*F D = 2. 375" t = 0.109" t, = 0. 875 (0.109) = 0.095375" D = 2(19.800)(0.095375) 2.375 - 2(0.4)(0.095375) P = 1643 psig at 300*F 2-1/2" sch 10S, ASTM A312 Type 304SS S = 19. 8 - ksi at 300*F D . = 2. 875" t = 0.120" t, = 0. 875 (0.120) = 0.105"- P = 2(19.800)(0.105) 2.875 - 2(0.4)(0.105) P = 1490 psig at 300*F , Page 38 4 I J

EA-FC-90-082 Rev. 2 55 ATTACHMENT B Maximum Ratio of Peak to Allowable Pressure for a Coincident Maximum Allowable Primary Bending Stress Primary bending stresses, acting concurrent with primary membrane stresses are limited in acenrd with the equations of Ref. 22. Load Combination 3 defines the allowables for Faulted conditions which include the effects of pipe breaks and MHE. Load Combo 2 defines the allowable for conditions including MHE but not pipe break. Primary bending stresses, due to the structural dynamics of a pipe break, will not occur coincident with the peak thermal induced pressure (Input 7). Those due to combined deadweight and MHE are limited by Load Combination 2. A maximum allowable primary bending stress can therefore be found by using design pressure for the primary membrane stress in the right side of the bending stress equation for Load Combo 2 (Assumption 5) . The resultant maximum allowable bending stress can then be substituted into the left side of the Load Combo 3 bending stress equation, as follows: 4 n p

                     - s, cos[- P, ] s 4 s gcos[g       u]

j D L which can then be solved for the allowable coincident primary membrane stress (due to thermal expansion of trapped fluid) resulting in: bs s, 2 -

                              - cos '[b n      s cos[2 *-s,"'))

where Pm represents the primary membrane stress due to design pressure. By inspection of Table 2, the penetrations with the highest peak pressures relative to allowable pressure are M-7, M-9 and M-12, for which the ratios are 0.40, 0.51 and 0.44 respectively. Penetrations M-9 & M-12 are A106 Gr B piping for which the code ; value S, is about 2/3 of yield stress at 300 F. The primary I -membrane allowable So for Load Combo 2 is equal to S and is Page 39

EA-FC-90-082 e Rev. 2 u therefore 1.5 times S,. _The primary membrane allowable St for Load Combo 3 is about 2.0 times S (as used in this analysis) as can be seen in Table 1. The ratio So/S t is therefore 0.75. The ratio of Pu over So can be conveniently found as the design pressure Po (600 psig for Pipe Class 602, Ref. 25, p. H1-16) over 0.75 times the allowable Load Combo 3 pressure Pt which is available from Table 2 (note that . the use of 1000 psig for Po, as listed in the table, would be unconservative for this. analysis as it would force the maximum allowed bending stress to be lower) The following 4 allowable membrane ratio is obtained: 0.48 St s x-- cos'3[0.75 2 cos[E 0.75(4756))) : The ratio of' O.51, for M-9, slightly exceeds this generic allowable. However, material certification reports (Ref. 24) show that the range of yield and ultimate strengths (47 to 52 ksi and 71 to 80 ksi respectively) are more than 15% greater than the minimums ]4 (35 ksi and 60 ksi respectively) on which code allowables are gi based. Even a 6% increase is sufficient to qualify this penetration. In addition, it is highly unlikely that bending stresses are 100% of that allowed, as conservatively assumed. An allowable membrane stress ratio of 0.51 corresponds to a coincident bending ' stress that is 95% of the maximum allowed. It can therefore be concluded that these penetrations are capable of withstanding the pressures created by heating of trapped fluid during a LOCA or MSLB event. Penetration M-7 is A376 TP316 stainless steel piping for which the primary membrane allowable So for Load Combo 2 is equal to 1.2 S,. The primary membrane allowable St for Load Combo 3 is about 2.0 times S (as used in this analysis) as can be seen in Table 1. The ratio So/St is therefore 0.60. The ratio of Pm over So can be found as Po (2580 psig for Pipe Class 2501, Ref. 25, p. H1-26) over 0.60

times the allowable Load Combo 3 pressure P t from Table 2. The rallowing alluable membrane ratio is obtained: l Pu 2 2580 s - cos -8[0.6 cos[ x )) e 0.63

 - Sin'ce the ratio 0.40 is less, it can be concluded that this penetration is capable of withstanding the pressures created by heating of trapped fluid during a LOCA or MSLB event.

Page 40

r EA-FC-90-082 Rev. 2 $7 ATTACHMENT C Miscellaneous References

1) USAR Fig. 14.16-1, Containment Pressure Response LOCA

2) USAR Fig. 14.16-3, Cantainment Pressure Response MSLB

3) USAR Fig. 14.16-4, Containment Temperature Response MSLB

4) USAR Appendix F, Table F-1

5) MR-FC-89-36, Rev. 2, p. 4-1

6) ASM Metals Handbook, 9th Edition, Volume 3, Fig. 21, p. 205

7) DBD WIP #14000, Penetration M-12

8) DBD WIP #14003, Penetration M-9 >

9) DBD WIP #35184, 200 ft of 1" A106 Gr B

10) DBD WIP #58841, Group II, Class I, B31.7, Carbon Steel Pipe ,

11) DBD WIP #58505, Group II, Class I, B31.7, Carbon Steel Pipe

12) DBD WIP #58921, Group II, Class II, B31.7, Carbon Steel Pipe

13) DBD WIP #59078, Group I, No Class, B31.1, Carbon Steel Pipe

14) DBD WIP #59365, B31.7, Class I & Class II Carbon Steel Pipe

15) DBD WIP #59550, Group I, B31.1, Carbon Steel Pipe

16) DBD WIP #67834, B31.7, Class II, Carbon Steel Pipe

17) DBD WIP #59325, Group I, B31.1, Carbon Steel Pipe

18) DBD WIP #62058, Group I, B31.1, Carbon Steel Pipe l

Page 41 l 1

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                                                                                                                 . l(('. . $3 MR-FC-89-36 Q,m                                                                                     Construction Rev. 2 4.0     DESIGN INPUT REOUIREMENTS 4.1      System Functional Recuirements The Steam Generator Blowdown Tank FW-7 is used to recieve a continuous discharge from the Steam Generators. This action is necessary to ensuro maintenance of the chemical concentrations            of  the   feedwater      within   the   Steam Generator internals to minimize excessive sludge, scale, and corrosion formation. Control valves HCV-1389, and -

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o C EA90-082Ahv. 27 g 69 { TELEPHONES: (ARE A CODE 312) u0 0' FLEXONICS DIVISION lI a AnrLErr, itt. an_is u edrLm. lLUNots 60tC3 CHICAGO, ILL. 625_1210 Date 7 MST,1970 f. p f .

\)

j Customer's Nome CERTIFICATE OF CONFORMANCE , WESTERN PIPING & ENGINEERING CO. INC. f[ , Customer's Address SAN FRANCISCO, CALIF. 94124 (w f/

v Customer's Purchase Order or Contract No. 1528, Joe 6377 Customer's Port, Drowing or Specification No. 4 Flexonics Order No. 3<071 N. Flexonics Drawing No. ITEM #3-010367, !4-010368 Quantity ITEM #3-10 PCS, #4-2 PCS. . D s. PHYSICAL & CHEMICAL CERTS P.O.'s 352974 48 & 3 I55 Additional Informationi ATTACHED .. _..-,. . ? .'- .

.t1 Flexonics hereby certifies that all material used in the manufacture of the above order conforms to material and/or manufacturing specifications detailed on Flexonics drowings ond/or other specifications listed above and are in accordance with the manufacturing provisions of the order. . Test reports and/or suppliers' offidovits are in our files. - CALUMET & HECLA CORPORATION -

By G Z2 A w A ' Quality 'As surance Repree6totive , Subscribed and sworn to before me this 7 AUGUST,1970 FLEXONICS DIVISION day of 8 b Notony Public f My commission expires 2/5/73 FORM 92 RCs. 2 69

y .KVbMbVW L b t4 e b r u u t) e i: b e BA90LDf@ Miv.W4

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EXCNCS c:It n oso~ own ,.uw,,4 Cusro.u. s onou Nm 4 V dF CAURE & HECLS CORP - w? * - ' 3 E DEVON AVE 6-25-69 1AD50ll83-A f*48105 3

;TLE'E',                     ILLINOIS                                                                                                                                                                                       -                                                 i.

DESCdlPTION OF MATEPlAL AND SPECIFICATICNS , 4 PCS STAIHLESS SEETS T304 2B

18 GA x 48" x 120" ) C EMICAL ANALYSIS i I: TAT NO. CAtle C a tor. MOLY. CoPPit V A. ' fl. ALu 4 (sag CfHit . MANof PMosg'sWLPHu[siuCoNI, NICKIL 1.48 .028 .017 .34 U 273 ,

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murACrutit 4 c.', p.. .r THE ABOVE TESTS CONFORM TO THE REQUIREMENTS OF THE SPECIFICATIONS LISTED , . ", S CERTIFICATE NOTARIZED ONLY WHEN REQUIRED We hereby terlify that the foregoing data is o true copy of the ! ' A, g, gg{rg , d.i. roeniihed vi by the prodweing miit er the data ..vtiins ; c Netery Public do hereby Certify 8 from tests performed in the Ryerson Lebaratory. ?? r this cffidavit was subscribed end sworn '- tg>te ere me by a gguth r r Int Cf ) seph T. Ryerson 8. Son, Inc., this_ day of--- ' JostPH v. nyttsON & son, INC.

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Bellwood;111. 60104 oATg f.iarch 4, 1970 tRI I Telechene: 378 SI A0

  ; 7e Reynolds'Pioe & Sucoly Co.                                      .

YOUR ORDER NO. 37449 Pt. - ( 15 IS TO CERTIFY THAT THE MATERIAL FURNISHED ON THE ABOVE ORDER CONFORMS TO THE JLLOWING CHEMICAL AND PHYSICAL ANALYSIS AS COPIED FROM REPORTS FURNISHED US BY JR SUPPLIER

ASTi4 A-106 ASTl4 A-10E ASTU. A-106 -

l l 'ECIFICATION GRADE D GRADE B Q2 ACE B FLEXONICSP.O. #352974, AND GRADE 2-23L70 !E 10.750 12.750 14.000 Ite:s # - 10" Pipo ALL- .594 .688 . T00 Item #2. - 12" Pipo ELD PT. ( = PSI) 40,900 L/ 42.500f./ 48,460 PfMLE ( PSl > 66,900 / 69,800 / 82,320 lb. 46.5 U 45.0 V 37.5 W ,R_B O N .24 .22 t/ ~ .28 \.% ANESE

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M AILING ADOftESS .' P.O. DOX 310 / M AYWOOD. ILLINOIS COI53 ,. ,, REPORT OF MECHASICAL TESTS 4/23/70 p DATE:

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TELEPHONES:(AREA CODE 3:2) L [8 DIVISION sARTt. Err,itt. 837-isii

                                 .                        I                   sARTLETT, ILLINol5 6C103                                                                                           CHICAGO, IL L. 625-i210 s

g 7 AUGUST,1970 g

             ,                                               .                              CERTIFICATE OF                                                CONFORMANCE                                                                      g                                               j Customer's Nome                                          WESTERN PIPING & ENGINEERING CO. INC.                                                                                                                      j
                                                                                                                                                                                                                                                  \v
              .              ,         . Customer's Address                                                SAN FRANCISCO, CALIF. 9h124                                                                                                  . ,

v Customer's Purchase Order or Contract No. 1528, JOB 6377 . _ . 4 ' Customer's Port, Drawing or Specification No. -- - -- T' ,

             .'                         . Flexonics Order No.                                            34071                                                                                                     ;..        . . _                . . . . .                  . . . .

Flexonics Drawing No. ITEM #3-01036 7, #4-01o368 . . . . . . . . o ..

             .n                           guantity                             ITEM #3-10 PCS, #4-2 PCS..                                                    .-                               . . . . .

e" 4- +: . ~ PHYSICAL & CHEMICAL' CERTS P.O.'S 35297 4 & 348105 4M,.. Additional Informationi

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ATTACHED "?' e Flexonics hereby certifies that all materio!.used in the manufacture of the above order F- conforms to'moterial ond/or manufacturing specifications detailed on Flexonics drawings"" - and/or other specific <:tions listed obove and are in, accordance with the' manufacturing ._. g

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                                 .                    7             day of                  AUGUST,1970                                                                                            FL E'XONICS dlVISION'
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7 4 THE ABOVE TESTS CONFORM TO THE REQUIREMENTS OF THE 5'ECIFICATIONS LISTED

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St Cf seph I. Ryerson & Son, Inc., this day of JOstPH T. RYER$ON & son, INC

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                                                                              ,j pHOLDS PlPE & F!TilNE                                  C                 W3,HICAGO, ILLINDIS 613 So. 25th Ave.

Bellwood,111'. 60104 .oArg f'. arch 4. 1970 ("sil Telechend: 378 5140 SOLD TO Reynolds ' Pipe & Supply bO. - YOUR ORDER NO. 37449 Pt. --- THIS IS TO CERTIFY THaT THE MATERIAL FURNISHED ON THE ASOVE ORDER CONFORMS TO THE FOLLOWING CHEMICAL AND PHYSICAL ANALYSIS AS COPIED FROM REPORTS FURNISHED US BY , OUR SUPPLIER

ASTM A-lO6 ASTM A-lD6 AST!.i A-106 _l l CPEC4FICATION GP.ADE D GPADE B QSADE B FLEXONICSP.O. #35297b AND GRADE 2-23 L70 size 10.~i50 12.750 14.000 Iten #2. - 10" Pipe WAL'L .594 .688 .750 Item 83 - 12" Pipe YlELD PT. ( = PSI) 40,900 t/ 42,500 Y 48,460 TENSlLE (= PSI) 66,900 / 69,800 / 82,320 e

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STATE OF ILLINOIS [ - hQJvvg N . SS COUNTY OF' COOK , Tem Horwitz, Office Manager CERTIFIED AND SUBSCRIBED BEFORE ME, A NOTARY PUBLIC. IN AND FOR THE ABOVE STATE AND

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CONSULTANTS e // ~ J MAILING ADDRESS .' P.O. BOX 310 / MAYWOOD. ILLINOl'S 60153 REPORT OF MECHANICAL TESTS !

4/23/70 l { ] . DATE Flexonics Division - Bartlett

Illinois POE353989 60103 Mr. R.W.Mykaza TESTED PER ASTM A370 L J FULL SIZE SPECIMEMS sas': w tiou ' ' ' " * " , ' " U5'4E . , " , ' , ' , " , , ,'

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          -                            CO>fMONWEALTR ELECTRIC CO)!PANY                                                **
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we os... r ,t como.n, mb,.4a nou April 2,1970 57 s..mu neu. c. '" n..a..e.....w ..sa 'U RECEIVED o C-165-21.) ; APR -61970 i' i Gibbs, Hill, Duttan & Richardson, Inc. G IBBS & E !L. IN C r.o. Box 396 Fort Calhots, Nebraska 6802) s Res GEDkR Project 11h05 Omaha Public Power Distritt

Fort Calhoun Station Unit No.1 Contract 765
Commenvealth Electric Compaq Job $690 Subject Certified Test Data for Johnson Service Campag's 7 0. E-220561 Attentions Mr. J.F. Eally Gentlemens l pisase find enclosed twelve copies each of United States Steel's Certified Test Report relative to approximately 200 feet of 18 ASM A-106, Grade B Pressure Pipe for your review and approval.

This material is being held for shipment until receipt of your written approval to the affect that said tests and material are satisfactory. Accordingly; we request you immediately espedite this approval. j . Yours very 4:u17, , ', OMODGALM ELECTRIC CGIFANY . $fV Jh9 - k\ h - fd + Ab . y ' T.C. Ball

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