ML14034A172

Calculation No. 11-2357-C-003, Revision No. 5, Evaluation of Repair Sleeve Assemblies.

ML14034A172
Person / Time
Site:	Calvert Cliffs
Issue date:	01/29/2014
From:	Altran Corp
To:	Calvert Cliffs, Constellation Energy Nuclear Group, Office of Nuclear Reactor Regulation
References
11-2357-C-003, Rev 5
Download: ML14034A172 (45)

Text

ENCLOSURE 1 Evaluation of Repair Sleeve Assemblies, Calculation 11-2357-C-003 Calvert Cliffs Nuclear Power Plant, LLC January 29, 2014

aLTRan Evaluation of Repair Sleeve Assemblies 11-2357-C-003 Constellation Energy Calvert Cliffs Nuclear Power Plant 5 1/13/14 See Page 4 Y. Gan / N Rao H Lu W Mcbrine J Gabriel 4 3/12/2013 See Page 4 H Lu A Chock R W Hammelmann 3 2/17/12 See Page 4 E Wapner R W Hammelmann R W Hammelmann 2 2/15/12 See Page 4 E Wapner R W Hammelmann R W Hammelmann A Chock/

1 1/26/12 See Page 4 Y Gan/E Wapner R W Hammelmann R W Hammelmann 0 1/4/12 See Page 4 H Lu W Mcbrine R W Hammelmann Rev No. Date Revision Description Prepared Checked Independent Approved/

IReIIv Reviewer Date aLTRan

CALC. NO. 11-2357-C-003 aLTRaln INDEPENDENT REVIEW REV. NO.: 5 PAGE 2 OF 30 CLIENT/PROJECT Constellation Energy/ Calvert Ciffs Nuclear Power Plant (10 CFR 50, Appendix B) PREP N Rao DATE 118/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 Report Record Report No.: 11-2357-C-003 Rev. No.: 5 Sheet No. 2 10CFR50, Appendix B Applies: 1A] Total Pages: 44

Title:

Evaluation of Repair Sleeve Assemblies Client: Calvert Cliffs Nuclear Power Plant Facility: Constellation Energy Revision

Description:

Revised to incorporate system design temperature changes from 95 F to 200 F.

Computer runs are identified on a Computer File Index: Yes E1 N/A M]

Error reports are evaluated by: Date:

Computer use is affected by error notices. No 0l, Yes LI (if yes, attach explanation)

Prevarer(j _ Date , Date

- /-~ 1/13/14 1/13/14 Independent Review: Independent Review is performed in accordance with AOP 3.4 as indicated below

.9 Design review as documented on the following sheet or I] Alternate calculation as documented in attachment or

[] Qualification testing as documented in1attachment or Independent Reviewer: L&r////S4- r' 'a'2 _ Date: 1/13/14 APPROVAL FOR RELEAS:

LEAD ENGINEER: Date: 1/13/14

CALC. NO. I1-2357-C-003 aLTRan INDEPENDENT REVIEW REV. NO.: 5 PAGE 3 OF 30 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, Appendix B) PREP N Rao DATE 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 Independent Review Considerations (in accordance with EOP 3.4)

Initials

1. The inputs come from an appropriate and controlled source, and are clearly referenced.

2. The inputs from uncontrolled sources or assumptions are properly justified and documented.

3. The inputs or assumptions that are not adequately justified are identified for later confirmation.

4. Design, analysis, testing, examination, and acceptance criteria are specified and complied with.

5. Appropriate interface control was administered during the process of this report.

6. The computer programs used are authorized for use and/or properly verified.

".-4

7. Applicable codes, standards, or regulatory requirements are properly specified & complied with.

8. The specified tests & examinations were performed by personnel with appropriate qualifications.

A/A 't

9. All tests and examinations were performed in accordance with written procedures.

10. Specimens are controlled by identification number and their traceability is maintained. ,r %0-1

11. The calibration of instrumentation is acceptable and properly recorded.

12. The instruments that are used are recorded by name and identification number.

13. The report is neat and legible and suitable for reproduction.

W01L

14. The formatting and technical requirements of applicable procedures are complied with.

15. Critical numerical computations have been checked in detail.

16. The endorsements of all originators and verifiers have been properly recorded.

17. Appropriate construction, operation, and/or maintenance considerations have been considered.

18. The conclusions satisfy stated objectives, and they are consistent with the input.

19. All material specified are compatible with their service environment.

20. Procedural requirements for report revisions and subsequent reviews are complied with.

Clarify significant comments:

All comments are resolved and incorporated into the calculation except as noted here:

ev ew r C nc D13/ 14 O * ,,,o C , A u - ctde/ 1/ 13/ 14 Oei~inator's Concurrence Date Independent R~eviewer's Concurrence Date

CALC. NO. 11-2357-C-003 aLTRRan REVISION DESCRIPTION REV. NO.:5 PAGE4OF30 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, Appendix B) PREP N Rao DATE 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 Rev. No. Description 0 Original I Revised to add section 4.6.4 (sheet 35A); Modified conclusions and reference (sheet 41, 42 and 44). Updated sheets 6, 7, 10, 11, 24, 30, 33 and 34 due to customer comments. Also replaced cover sheet, report record (pg 2), verification sheet (pg 3), revision description (pg 4).

2 Revised hoop stress and minimum wall thickness calculations to include system design pressure. Added CCNPP Civil and Structural documentation to allowable seismic axial acceleration calculation. Cleaned up calculation.

3 Revised hoop stress and minimum wall thickness calculations using max install pressure instead of long term contact pressure. Revised Sh. Minimum contact pressure calculations were revised to neglect, and not subtract, the design pressure. Updated sections include: 3.4, 4.1.5 & 4.1.6, 4.2.1 & 4.2.2, 4.3.2, 4.4.2

& 4.6.4. All conclusions updated with revised values.

4 Complete revision to incorporate changes in response to owner's comments.

Removed references to gray cast iron pipe, which is out of scope.

5 Revised to incorporate system design temperature changes from 95 F to 200 F. I

CALC. NO. 11-2357-C-003 OLTRan REV. NO.: 5 PAGE 5 OF 30 CLIENT/PROJECT Constellation Appendix 1B) Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 Table of Contents Title Page ..................................................................................................................................................... 1 Verification .................................................................................................................................................. 2 Revision Description .................................................................................................................................... 3 Table of Contents ......................................................................................................................................... 4 1.0 PU RPO SE ........................................................................................................................................ 5 2.0 M ETH O D O LO G Y .......................................................................................................................... 6 3.0 INPUT, ASSUMPTIONS, AND CLARIFICATIONS ...................................................................

3.1 Input 7 3.2 Assumptions 9 3.3 Clarifications 10 4.0 REFEREN CES ............................................................................................................................... 10 5.0 CA LCU LATION S / ANA LY SIS ................................................................................................... 11 6.0 RESULTS / CO NCLU SIO NS ................................................................................................... 28 ATTACHMENTS Attachment A Design Sketches (4 pages)

Attachment B Miscellaneous Information (5 pages)

Attachment C Email Correspondence (3 pages)

Attachment D Miscellaneous Calvert Cliffs Documents (2 pages) 5

CALC. NO. 11-2357-C-003 aLTRanl REV. NO.: 5 PAGE 6 OF 30 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE 1/8/14 Appendix B)

CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14

1.0 INTRODUCTION

/PURPOSE Calvert Cliffs Nuclear Power Plant (CCNPP) has safety related salt water supply piping in-service for over 35 years. They routinely monitor and inspect Saltwater System piping utilizing a technology that provides a cross-sectional assessment of the pipe wall. Plant management has requested that a repair method must be in place, in accordance with ASME Section XI relief request, in the event that a defect(s) are encountered that exceed the minimum design basis requirements. As the pipe material is composed of ductile iron/gray cast iron, a welded repair is not possible.

Altran has developed a repair method that provides structural and pressure boundary integrity for all design basis loading conditions. This repair system consists of an EPDM internal gasket, four (4)

AL6XN retaining bands and pressure/structural overlapped load plate (non-welded AL6XN) as depicted in Attachment A.

The mechanical sleeve system is comprised of a rubber gasket that is factory sized and molded to fit the inside diameter of the pipe to be refurbished. A sheet of UNS N08367 stainless steel (AL6XN) is placed between the gasket and the inside pipe wall as a backing plate and act as pressure/structural load barrier.

The entire assembly is held in place by a series of four (4) AL6XN bands that are expanded against the sleeve causing it to bear tight against the inside of the pipe.

The rubber gasket material is Ethylene Propylene Diamine Monomer (EPDM) manufactured in compliance with ASTM-D3900, D3568 and is designated as M4AA71OA13Bl3C12Z1Z2Z3 per ASTM-D2000 [Ref. 2]. The gasket is factory vulcanized to form one continuous piece. The ends of each gasket have grooved ribs which become compressible sealing points against the inside of the pipe.

The sleeves are thus secured in place by the circumferential pressure exerted by the stainless steel retaining bands, which are hydraulically expanded and held in position by wedges made from the same material.

The backing plate is a single sheet of 16 gauge (.0598") UNS N08367 sheet metal 14" wide enclosing the entire inside circumference of the 30" or 36" Pipe [Ref 3]. After the backing plate has been placed over the degraded area, the balance of the mechanical sleeve assembly will be installed over the backing plate. Four (4) AL6XN bands will be used per sleeve assembly. For each assembly two bands will be installed at each end of the rubber gasket and two to secure the backing plate in position.

The sleeve, which is held in place with retaining bands, has ribs that contact the inside of the pipe to be repaired. As loads are transferred from the metal retaining bands to the sealing ribs, these restraining members control the cold flow of the elastomeric material so that the gasket remains in contact with the pipe to create a seal. The position of the "inside" bands assures a secure fit for the backing plate. The 6

strength and resilience of the sleeve assembly will provide a durable and reliable protective shield inside the pipe against the erosive effects of water flowing at varying rates.

The purpose of this calculation is to

" Qualify the internal mechanical sleeve assembly as a contingent repair for the safety related service water supply piping of ductile iron only at the Calvert Cliffs Nuclear Power Plant. The loading conditions considered include installation, seismic (SSE), pipe movement, fatigue and normal operation.

" The assembly will be qualified for one abnormal loading condition, in which the upstream band is lost. Further, the backing plate has been reviewed to assess itseffect on pressure boundary enhancement,

" Calculate the maximum flaw size based on the qualification.

2.0 METHODOLOGY This calculation qualifies the sleeve assemblies for loads applied during installation and operation.

The analysis uses methods of classical mechanics. In addition, the applied hoop stress caused by the retaining bands on the host pipe was qualified. This calculation will also determine if the retaining bands are sufficient to hold the sleeve in place and qualify the backing plate that will repair the defect. This calculation will also determine if the retaining bands shall be sufficient for the 50 psig design pressure of the Service Water (SW) cooling system. In addition, the calculation will determine the maximum diameter of a postulated circular flaw in the ductile iron pipe based on the ability of the AL6XN backing plate to resist the internal pressure load.

The methodology and calculations performed for the internal repair sleeve system assumes any repairs are made in a straight length of pipe. The proposed repair system is not designed to be used in pipe elbows or across mitered (or misaligned) joints. With the construction of the ductile iron pipe, the straight sections subject to repair may include a bell and spigot joint, which is considered acceptable. The design of pressure integrity of these type bell & spigot joints are solely dependent of the V-Gasket that is located between the OD of the pipe spigot and the ID of the bell and is held in place by the slip-on mechanical flange. The inside surfaces of the joined pipe should meet with no appreciable gap and require no special attention upon installation of a repair sleeve. The use of the sleeve repair system in the joint area is considered consistent with the design basis calculation for the repair provided it does not exceed the dimensional restrictions for the deteriorated area.

7

aLT RanSCUNS Calvert Cliffs Evaluation of Repair Sleeve Page: 8 of 30 By: Y.GaniNRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 3.0 Input, Assumptions and Clarifications 3.1 Input 3.1.1 System Piping Parameters - Pipe Specification for 30"/36" Pipes 30in 36in Pine Outside Diameter Dpo- 30 := 32.00in Dpo_3 6 := 38.30in [Ref. 19]

Pipe Wall Thickness tp_30 := 0.550in tp_36 := 0.630in [Ref. 19]

Pipe Inside Diameter Dp0 Dp0_30 - 2tp_3 0 Dpi_ 36 := Dpo_36 - 2tp_6 Dp030.90. in Dpi 36 = 37.04-in Piping Buried Location H.. 30:= 1 1.4ft Hma 36 := 11.7ft [Ref.3]

Earth Weight above Buried Pipe lbf3 Warth := 120- [Ref.3]

ft3 Pipe Materials Ductile Iron : Class LC, USAS A21.51-1981[24]. Material ASTM A377, Joint Class 4 [16-18]

Coefficient of Linear - 6 in[

Thermal Expansion  := 6.2-10 .[Ref.19],

in.

nDI F Attachment B Yield Stress Sy-DI := 42000psi [Ref. 23]

3.1.2 System Design Parameters Design Pressure Pd:= 50psi [Ref. 17]

Design Temperature Range The assumed installation temperature is 70 °F, Assumption 13.

(30 'F to 200 °F), Therefore the AT is: [Ref. 17]

ATIOW= 30 *F - 70 'F = -40 °F ATsw:= (40)30}F AThigh =200 °F - 70 °F = 130 °F Maximum System Flow Rate qsys .= 40000 gal [Ref.22 ], Attachment C min 8

3LT Ran Calvert Cliffs P SaCLUMNm I Evaluation of Repair Sleeve By: Y.Gan/NRao

~ Date: 91/8/14 Page: of30 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 Whs:= 110*lbf The weight of the sleeve assembly as assumed. Assumption 6.

- 3 lb Ilf_70F := 0.658.10 This is the absolute viscosity of water at 70 oF, [Ref. 7]

ft. sec lb Pwtr_70F := 62-3-- This is the density water at 70 'F, [Ref. 7]

3 ft1 3.1.3 Internal Sleeve Parameters [Ref. 2, Attachment A].

EPDM Gasket Thickness tws := 0.300in [Ref. 8], Attachment A EPDM Gasket Length Lw, := 19.79in [Ref. 8], Attachment A Retaining Band Thickness trb:= 0.1875in [Ref. 2], Attachment A Retaining Band Width Wrb := 2.Oin [Ref. 2], Attachment A Retaining Band Outside Diameter Drbo_30 := Dpi_30 - 2tws Drbo_30 = 30.30-in Drbo_36 := Dpi_36 - 2tws Drbo_36 = 36.44.in Thickness of the Push Tab tpt := trb tpt = 0.1875-in Thickness of the Backing Plate thkback := 0.0598in Attachment A (16 gauge) 3.1.4 Retaining Band and Backing Plate Material Properties Materials: AL-6XN (UNS N08367), ASTM B688 [Ref. 2, AttachmentA]

Yield Strength SY:= 45000psi [Ref. 20]

S, := lOOOOOpsi [Ref. 20]

Sh := M - .Sy,4 Sh= 25000-psi Coefficient of Linear -6 in F n.0 Orb:= 8 .5 -1 0 i [Ref. 6], Attachment B Thermal Expansion in.F Modulus of Elasticity Erb := 28.3- 106. psi [Ref.6], Attachment B Poisson's v:= 0.3 Assumption 7 Ratio 9

Page: lO of 30O cLTRafn Calvert Cliffs SCLwuINO Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 CaIc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 3.1.5 Hydraulic Expander Parameters Expansion Pressure (gage). HP.

This is pressure applied by the hydraulic the expander 4 retaining to each of bands.Mimu 2800*psi Minimum Assumption Asmpon112 Maximum [Ref. 10]

Expansion Cylinder Bore, Standard Enerpac b := 1.69in Assumption 12,

1. RC 104 Expander Attachment C 3.2 Assumptions

1. The system design temperature is assumed to be 30 OF to 200 °F.

2. The minimum fluid inlet temperature is assumed to be 30 OF

3. The coefficient of friction between the sleeve and the pipe wall is assumed to be:

V:= 0.32 This is based on a rubber belt on steel [Ref. 4, Table 12.2 ]

4. An impact factor of 2 was applied to the hydrodynamic loads to account for the rapid increase in Service Water supply flow during an accident, as shown in Section 4.3 and 4.5.

5. It is assumed that during the abnormal operating condition, the upstream retaining band will be lost and the sleeve will fold back on itself.

6. The weight of the sleeve assembly is assumed to be 110 lbf.

7. Poisson's ratio forAL-6XN is assumed to be 0.3.

8. Retaining bands on backing plate will be placed on a non-degraded area adjacent to the corrosion area.

9. DELETED

10. A maximum of long term stress relaxation of EPDM gasket is assumed to be 12%. During the repair sleeve installation, two expansions of retaining band to the hydraulic pressure will be made. After a minimum of 30 minutes holding following the first expansion, the EPDM gasket is assumed to have made the majority part of long term stress relaxation. [Ref. 2]

11. Ground water pressure on the outer diameter is assumed to be negligible.

12. The expansion pressure of hydraulic expander at the installation is assumed to be at the range of 2800-3500 psi, with an expansion cylinder bore diameter of 1.69 in. 3500 psi is the maximum pressure defined at the installation procedure [Ref. 10]. 2800 psi is an administrative low limit assigned byAltran (a conservative value used to ensure a minimum amount of "grip" for the gasket / pipe interface).

13. The installation temperature is assumed to be 70 OF.

14. This calculation qualifies the contingency repair method for ductile iron pipe only (Pipe/Service Class LC-2).

15. The postulate degraded condition for the calculation is a circular flaw.

10

aLTRan Calvert Cliffs Page: 1l of 30 S*,ujlaN* Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5

16. Qualification assumes removal of the cement mortar lining in the area of the contingency repair prior to installation.

Exposed ductile iron pipe surfaces shall be coated with Belzona, as a corrosion inhibitor in accordance with Spec.

M-600, Class LC [Ref. 21].

17. The density of the material fill is assumed to be 120 lb/ft 3 (from Ref. 3).

18.This qualification assumes that the seam of the backing plate is located on the other side of the circular flaw.

3.3 Clarification None 4.0 References

1. Altran Solutions Proposal No. Pll-2357-00 Final Rev-1, "Contingent Repairs for the 30 Inch and 36 Inch Diameter Ductile Iron Pipe for the Safety Related Service Water System", September 27, 2011.

2. HydraTech Engineered Products, Typical Circumferential Cross Section, Drawing No. HT-STD-06A. (see Attachment A).

3. Calvert Cliffs Nuclear Power Plant, "Minimum Wall Thickness for Salt Water System Underground Piping Per AWWA Code", Cal. No. C-92-98, May 11, 1992.

4. M. Lindeburg, Mechanical EngineeringReference Manual, 8th Edition, 1990.

5. USAS B31.1 Power PipingCode, 1967.

6. RathGibson, Physical Properties of 6XN Alloys in the Annealed Condition at -20°F to +100°F, http://www.rathgibson.com/productsbyalloy/super-austeniticl6xn.aspx. (see Attachment B).

7. F. Kreith, Principles of Heat Transfer, 2nd ed., Scranton Pa., Intemational Textbook Co, 1965.

8. HydraTech Engineered Products, Hydratite Double Wide Seal, Drawing No. HT-STD-03. (see Attachment A)

9. Email conversation, From Mike Fox [1] to Hammelmann Robert,

Subject:

RE:

Hydraulic loading during installation., November 30, 2011 4:35 PM. (see Attachment C)

10. Altran Solutions Installation Procedure No. 11-2357-P-004 Rev. 1, "Installation Procedure For 30" and 36" Diameter Internal Sleeve Piping Repair Systems", December 2011.

11. Erwin Fried and I.E. Idelchick, Flow Resistance: A Design Guide for Engineers, 2nd Edition, Pages 87 and 85, 1989.

(see Attachment B)

12. Marks StandardHandbook of Mechanical Engineers, McGraw Hill, 10th Edition, 1996.

13. ASME Section III, Appendices I, Figure 1-9.2.1., Design Fatigue curve,1989.

14. W.C. Young, and R.G. Budynas, Roark's Formulas for Stress and Strain, 7th Edition, McGraw-Hill, 2002.

15. Calvert Cliffs Nuclear Power Plant, "Civil and Structural Design Criteria", ES-005, Rev 0.

16. CCNPP, "Specification for Salt Water System Pipe and Fittings", Spec. 6750-M-265, Rev. 3. Bechtel, 1969-11-21.

11

Page: 12 of 30 aLTRan Calvert Cliffs oumn=Wo@ Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 CaIc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5

17. CCNPP, "M-601 Piping Class Summary Sheets", BG&E Document 92769, Rev. 49. (see Attachment D)

18. CCNPP, "Saltwater System", Calvert Cliffs UFSAR, Section 9.5.2.3, Rev. 37.

19. CIPRA, Cast Iron Pipe Research Association (CIPRA) Guide to Installationof Ductile Iron Pipe,1972. (see Attachmenl B)

20. ASTM Standard B 688 - 96 (Reapproved 2004), Standard Specification for Chromium-Nickel-Molybdenum-Iron (UNS N08366 and UNSN08367) Plate, Sheet, and Strip, 2004.

21. CCNPP, "M-600 Piping Class Summary Sheets", BG&E Document 92767-A, Rev. 44.

22. Email from E. Hussain (CENG) to R. Hammelmann (Altran) dated 2012-02-21, 15:53,

Subject:

"FW: Important message from Constellation Energy".

23. ANSI A21.50, Amercan National Standardfor the Thickness Design of Ductile-Iron Pipe, 1967, 1976.

24. ANSI A21.51, American National Standardfor Ductile-Iron Pipe, Centrifugally Cast, 1981.

5.0 Calculation/Analysis 5.1 Loads on the Sleeve Retaining Bands at Installation The AL6XN retaining bands are installed using a hydraulic expansion device to press the band tight against the sleeve.

During installation, a force is applied in opposite directions to each push tab at the break in the band.

This force causes a compressive stress in the band and induces the required contact pressure onto the sleeve. Once the retaining band is expanded to the required hydraulic pressure, a wedge is installed below the long push tab. The hydraulic pressure is then released. After a minimum of 30 minutes, a second expansion of the retaining band is performed to the expansion tool hydraulic pressure. The abutting edges of the retaining band press against the wedge maintaining the band and the wedge in compression. The forces in the retaining band cause it to conform to the shape of the host pipe.

5.1.1 Method for Computing Forces and Stresses in the Retaining Bands The hydraulic expander applies a compressive force to the retaining band at installation, and the area of the force applied on is the cross sectional area of the retaining band . This force causes a compressive stress that may be calculated via:

Force Area

f. =CB CB Eq. Where:

trbW (1) fc= Compressive Stress (psi)

CB = Compressive Force Due to Hydraulic Expander (lbf) trb= Thickness of Retaining Band (in)

Wrb= Width of Retaining Band (in) 12

Page: 13 of 30I Calvert Cliffs aLTRan SOLntIoNi Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Caic. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 In addition, the compressive stress in the band is related to the pressure imposed by the band on the pipe Pcontact using the hoop stress equation Pco0 a* D= Eq. (2) 2"trb Substituting Eq. 2 for f, in Eq. 1, then solving for Pcontact Where:

2 Pcontact 2- CB Eq. (3)

Drbo. Wb Drbo = Retaining Band Outside Diameter (in)

Pcontact = Contact Pressure (psi)

Wrb = Width of Retaining Band (in) = 2.00 in.

CB = Compressive Force Due to Hydraulic Expander (lbf) 5.1.2 Calculation of the Compressive Force in the Retaining Band at Installation The sleeve retaining bands are installed using the standard #RC104 expander with a 1.69" diameter hydraulic cylinder.

The compressive force on the retaining band during installation, CB, is:

[Reference to Section 2.2.5]

CBi:= (4".b)'HPi CB is the hoop force imposed on the retaining band by the hydraulic cylinder during installation.

b = 1.69-in This is the expansion cylinder bore.

(6281 Force on band due to minimum hydraulic expander pressure CB 6281bf (2800psi)

C7851 Force on band due to minimum hydraulic expander pressure (3500psi) 5.1.3 Calculation of Contact Pressure Between the Retaining Bands, EPDM Elastomer Gasket and the Pipe The contact pressure, Pcota at installation is calculated using Eq. 3:

For 30 inch Host Pipe 2CB Pcontact_30 --

Wrb'rbo_30 (207> Minimum (259) Maximum 13

Page: 14 of 30 Calvert Cliffs aLTRan Sa=ulTNE Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 The long term contact pressure is based on a maximum compression stress relaxation of 12%, (assumption 10).

PcontactLT_30 := (1 - 12 %)Pcontact_30

("182 PcontactLT_30 = , 2 2 8 ,,'PsMxiu

. Minimum (228 Maximum For 36 inch Host Pipe 2CB Pcontact_36 "-

Wrb" Drbo_36 (172* . Minimum Pcontact_36 = I 25fSI (215) Maximum The long term contact pressure is based on a maximum compression stress relaxation of 12%

PcontactLT_36 6

C(1 - 12%)-Pcontact_36 152 )Minimum

=co i

Ps"1 ntactLT 3

( 190 Maximum 5.1.4 Check of Compressive Stress in the Retaining Band The compressive stress corresponding to the maximum hydraulic expansion pressure is:

CB 1 O'c c ch" Maximum compressive stress in

- trb'Wrb 'c_chk = 20936.psi retaining band at installation C'c chk - 83.7.% of allowable stress Sh 14

Page: 15 of 30 Calvert Cliffs aL'URanSCILLMN8 Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 5.1.5 Determine the Host Pipe Minimum Wall Thickness The host pipe minimum wall thickness to sustain sleeve assembly loading is determined from ANSI A21.50-1976, Section 50-2.2 Step 2 "Design for Internal Pressure" [Ref. 23].

tmin=(Ptotal*Dpipe)/( 2 *Sy-pipe)

For 30 inch Ductile Iron Host Pipe 2(Pcontact_301 + Pd + 1OOpsi + PTHIDI30)-Dpo_30 tDI_30min := 2.(Sy_Dl) tDI_30ni = 0.3871in This is the minimum host pipe wall thickness for sleeve loading.

The host pipe is 30" with a design wall thickness of 0.550 inches.

For 36 inch Ductile Iron Host Pipe 2(Pcontact_36 + Pd + 100psi + PTHIDI36).Dpo_36 tDi_36min := 2.(SyDI) tDI_36min = 0.409.in This is the minimum host pipe wall thickness for sleeve loading.

The host pipe is 36" with a design wall thickness of 0.630 inches.

5.2 Compute the Thermal Effects on the Forces in the Retaining Band 5.2.1 Calculation of Thermal Expansion/Compression in the Retaining Bands Thermal expansion/contraction in the circumferential direction = Ax (assuming that the EPDM is fully compressed). This is the difference in expansion between the degraded ductile iron pipe and the AL6XN band.

This calculation is repeated for the hot and cold thermal expansion moduli and the contraction and expansion from 70F to the minimum and maximum operating temperatures in the system.

For Ductile Iron 30 inch pipe AXDI30 := arb.7rDrbo 30 'ATsw - oDl.7r'Dpi_30.ATsw 6

-~85xiin -6 in 62 a o= 8.Sx 10- 6. in* oD I= . x 10 -6 in.F in.F

(-0.0083) Contraction, AT=-40 "F AD130 = ,0.0269 J Expansion, AT=+130 OF 15

c3LT Ran Calvert Cliffs Page: 16 of 30 SCLT="W* Evaluation of Repair Sleeve By: Y.GanINRao Date: 1/8/14 Caic. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 The thermal strain in the retaining band is:

AXD1 30 ethmDI30

'--"iT"--rbo_30

-8.71 x 10- 5 Contraction, AT=-40 *F Sthm_D130 =II E. 2.83 x 10- 4 Expansion, AT=+130 'F Thermal stress uTH in the retaining band due to relative circumferential expansion/contraction of the AL6XN retaining bands with respect to the pipe resulting from the temperature changes is:

(TTHD130 := 6thm_30Erb Contraction, AT=-40 *F UTHD130 (28010 )P5 Expansion, AT=+130 'F where aTHD130 = thermal stress, E 2.83 x 107. si Compressive force in the retaining bands due to Alative thermar expansion/contraction:

(-924 Contraction C H-0D130

= l Ibf E xpa ction CTH-D130 := o'TH-D130 "trb'Wrb 03004 ), Expansion The change in contact pressure between the sleeve and the pipe wall due to thermal effects is:

PTHDI030 .-- 0130 PTH D130 = (31 )p Wrb- Drbo30 - 99 PTHIm_DI30:= max(I PTHD130 , I PTHD1301iI)

PTHImDI30 = 99.psi Note: this is a forced identity and should be checked with each calculation that PTH1 = PTHlm This value is used above for the PTHI_D130 99 psi Long term operational hoop stress.

The minimum contact pressure between the sleeve and the pipe wall can be computed using the minimum long term contact pressure and the effects of thermal contraction neglecting the design pressure. This pressure will conservatively compute the friction force holding the sleeve in place that will be compared to the hydrodynamic forces acting to dislodge the sleeve.

PcontactLT_300 = 182-psi Pmin_D130 := PcontactLT_300 + PTHD1300 Pmin D130 = 152'psi 16

Page: 17 of 30 aLTRan SouLMNS Calvert Cliffs Evaluation of Repair Sleeve By: Y.GanINRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 For Ductile Iron 36 inch Dive AXD1 36 =Orb. T.Drbo_3 6 .ATsw - OtDl. .Dpi_36. ATsw C

(-0.0101 .in Contraction 0.0327 1 Expansion The thermal strain in the retaining band is:

AXDI 36

- _ 13 "-Drbo_36 Contraction Ethm_D136 -8.79 X 10- 5)

_ 2.86 x 10- 4) Expansion Thermal stress uTH in the retaining band due to relative circumferential expansion/contraction of the AL6XN retaining bands with respect to the pipe resulting from the temperature changes is:

CTH-D136 : =Ethm _D136"Erb O.TH-DI36 =

C -2488>

8 86 I Contraction C'psi

_ 8086) Expansion Compressive force in the retaining bands due to relative thermal expansion/contraction:

CTH-D136 := (TTH-D136"trb'Wrb CTHD136 = lbf Contraction 3 x 10 Expansion The change in contact pressure between the sleeve and the pipe wall due to thermal effects is:

2

• CTH DI36 -26)

Wrb'Drbo_36 - 83 PTHImDI36  := max( PTH_Di3601 1 1PTHDI361 I) PTHIm_DI36 = 83.psi PTHID136 - 83psi Note: this is a forced identity and should be checked with each calculation that PTHI = PTH1m This value is used above for the Long term operational hoop stress.

The minimum contact pressure between the sleeve and the pipe wall can be computed using the minimum long term contact pressure and the effects of thermal contraction neglecting the design pressure. This pressure will conservatively compute the friction force holding the sleeve in place that will be compared to the hydrodynamic forces acting to dislodge the sleeve.

PcontactLT_360 = 152"psi Pmin_D136  : PcontactLT_360 + PTHD136 0 Pmin_D136 126.psi 17

Calvert Cliffs Page: 18 of 30 aLTRan SunUTWN Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 5.2.2 Calculation of Minimum Friction Force Between the Sleeve and the Pipe Wall.

The contact force between the sleeve and the pipe wall at each retaining band is:

For Ductile Iron 30 inch Host Pipe Pmin.D130 = 152-psi Sheet 16 wrb = 2.00.in Drbo 30 = 30.30-in Sheet 9 FcminD130 := PminDl30"Wrb"7T"Drbo_30 F:min_D130 = 28921 . lbf Ffmin D130 = 9255.1bf The minimum friction force is: Ffmin-DI30 := VJFcmin-D130 For Ductile Iron 36 inch Host Pipe Pmin D136 = 126.psi Sheet 17 Wrb = 2.00'in Drbo_36 = 36.44.in Sheet 9 FcminD136 := PminD136"Wrb-trT"Drbo_36 Fcmin_D136 = 28866.1bf The minimum friction force is: Ffmin-D136 := 1LFcmin-D136 Ffmin D136 9237-1bf 5.3 Calculation of Hydrodynamic Load The sleeve is held in place by four retaining bands, located at both ends and adjacent to the corrosion area location. The bands are forced against the sleeve via a hydraulic expander, and a wedge is set into the open gap to hold the retaining band against the sleeve/pipe. The retaining band expansion induces a uniform compressive pressure on the sleeve elastomer. This pressure creates a longitudinal friction force between the elastomer and the pipe. The longitudinal hydrodynamic shear force generated by the fluid flow across the sleeve assembly is opposed by the longitudinal friction force. The minimum friction force is computed in Section 4.2.2.

5.3.1 Hydrodynamic Load For 30 inch Pipe The pipe inside diameter is:

Dp-0= 30.90-in

[Ref. Sect. 2.1]

Conservatively taken as the pipe ID less the sum of the thickness of the sleeves retaining bands and push tab, Do_3o:= Dpi 30 - 2(tws + trb + tpt) The sleeve thickness is based on a layer of gasket material, the retaining band, and the push tab. Attachment A.

where, tw3=thickness of gasket = 0.300 in [Ref. Sect. 2.2.3, sheet 9]

t,b~thickness of retaining band = 0.1875 in [Ref. Sect. 2.2.3, sheet 9]

tpi=thickness of push tab = 0.1875 in [Ref. Sect. 2.2.3, sheet 9]

18

Page: 19 of 30 aLT Ran SOuLMNO Calvert Cliffs Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 DO_30 = 29.55. in The average flow velocity in the orifice is:

~  : qsys Vo 1fj ft V ofif _3 = 18 .7 - -f V (D°3 sec where, qsys= 4 0 0 0 0 gpm [Ref. 22], Attachment C The average inflow velocity based on the pipe area is:

ft

=pj (DiW qY )

Vpipe_30 = 17.1" sec Determine the Reynolds number for the pipe:

R e pip e_ 30 := Pwtr 70F Vpipe 30"Dpi_30

ý P -0 l'"_70F 106 Repip¢ 30 = 4.172 x The pressure drop across the sleeve will be calculated by treating it as a thick edged orifice, per (Ref 11, page 87]

Attachment B, with a sleeve length of Lws = 19.79.in

=I0T, 2.(Do_30) cross sectional area Fof30- 4 theoriice of the Fpi 30 := 'N -Dp 3)2 Cross-sectional area orifice. - 4 -

of the pipe.

FO 30 Fpi-3O

- 0.915 Use this ratio for the abscissa of the table in Diagram 4-15, [Ref 11].

FO 30 Dh_30 4.

• The hydraulic diameter

- 'IT. DO_30 of the orifice h_30 = 29.55.in LovrDJ30-- This is the L/D ratio that is used in the ordinate of the table in Diagram 4-15, [Ref 11].

- ODh330 LovrD_30 = 0.67 Note that in diagram 4-12 and 4-15 (as presented in Attachment B), Ko (the hydraulic loss) is represented by the variable ý.

19

3LT Ran Calvert Cliffs Page: 20 of 30 SLT *MN5 Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 From figure in diagram 4-12 of [Ref 11] T is found from LovrD.

T 30 := 0.672 From figure in diagram 4-12 of [Ref 11] T is found from Lab.

Hydraulic loss for sleeve, represented as a thick edged orifice Foo3 0 ( Fo-3 0 2 f F 30 ( FO_30

[Ref. 11 diagram 4-15]

K,, 30 := 0.5 1 - - + I- - +T30.

+ I - 1 -

- 30_ Fpi_30 ) - Fpi 30 ( Fpi_30)

Ko-30 = 0.067 To determine the pressure drop across the sleeve assembly, certain fluid properties are necessary. The viscosity and density of water at 70 deg F is:

lb 62-3 'b lb "lf70F = 6.58 x 10-4 ft-sec Pwtr_70F =

3 ft W170F 1

wtr 70F :-- [Ref 12, T 3.3.3 & T 6.1.6]

Pwtr_70F The total pressure drop across the sleeve is Vonrif30 2 AP_30 := Pwtr7oF-Ko_30- AP_30 = 0.157-psi

_ - - 2 The hydrodynamic drag on the sleeve assembly is therefore:

Fdrag3o := AP_30- (i- 4 34 Fdrag_30 = 118-lbf Since the flow rate increases rapidly in the event of an accident, an impact factor (dynamic load factor) of 2 will be applied to the hydrodynamic loads: (See assumption 4)

FHYD_30 := Fdrag_30-2 FHYD 30 = 236-lbf The hydrodynamic load is much lower than the minimum friction force between the sleeve and pipe, see sec. 4.2.2. Therefore the 30-inch repair is acceptable for hydrodynamic loads.

20

aLTRan SOLuTON8 Calvert Cliffs Evaluation of Repair Sleeve By: Y.Gan/NRao Page: 21 of 30 Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 For 36 inch Pipe The pipe inside diameter is:

Dpi_36 = 37.04.in The diameter of the orifice (here the term orifice means the ID of the in place retaining ring) is:

tf := tws + trb + tpt The sleeve thickness is based on a layer of gasket material, the retaining band, and the push tab.

tf = 0.675-in 2

DO_36:= Dpi_36 - tf DO_36 = 35.69.in The average flow velocity in the orifice is:

v°'6-O 6)

V f 3qsys Vorif 36 = 12.8.-

ft sec The average inflow velocity based on the pipe area is:

qsys Vpipe_36 := ft I SS ) Vpipe_36= I1.9-sec Determine the Reynolds number for the pipe:

Pwtr70F' Vpipe 36'Dpi_36 1k 70F Repipe_36 = 3.481 x 106 The pressure drop across the sleeve will be calculated by treating it as a thick edged orifice, per [Ref 11, page 87],

with a sleeve length of Lws = 19.79.in cross sectional area of Cross-sectional area Fo_36 := 7.(Do_36) Fpi_36 := 4"(Dpi- 36)2 4 the orifice. 4 of the pipe.

FO F- 36 = 0.928 Use this ratio for the abscissa of the table in Diagram 4-15, [Ref 11].

Fpi36 21

aLTRan SOLUTONS Calvert Cliffs Evaluation of Repair Sleeve By: Y.Gan/NRao Page: 22 of 30 Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 Fo_36 0

Dhb36:= 4 The hydraulic diameter of the orifice

- .. DO_36 Oh 36 = 35.69-in Lws LowD 36 :=

Oh_36 This is the L/D ratio that is used in the ordinate of the table in Diagram 4-15, [13].

LorD_36 = 0.554 From figure in diagram 4-12 of [Ref 11] Tis found from LovrD.

T 36 := 0.900 From figure in diagram 4-12 of [Ref 11] Tis found from Lab.

Hydraulic loss for sleeve, represented as a thick edged orifice F°-36 2 F3636 F- 36 6 +_.

+° Io_ (T

[Ref. 11] diagram 4-15

"-a_6o~(i pi-36) ( Fpi_36) - F Fpi_36 . Fpi_ 36 j Ko-36 = 0.058 To determine the pressure drop across the sleeve assembly, certain fluid properties are necessary. The viscosity and density of water at 70 deg F is:

lb Pf 70F f 70F =- 6.58 x 10 -4 lbs4 ft- sec Pwtr_70F = 62.3-- 3 Pwtr 70F

[Ref 12, T 3.3.3 &T 6.1.6]

ft The total pressure drop across the sleeve is 2

70FKo3_36 AP_36 := P.wtr AP_36 = 0.064-psi The hydrodynamic drag on the sleeve assembly is therefore:

(Dpi 36) 2 Fdrag36 := AP_36-it- p Fdrag_36 = 691lbf 4

Since the flow rate increases rapidly in the event of an accident, an impact factor (dynamic load factor) of 2 will be applied to the hydrodynamic loads: (See assumption 4) 2 FHYD-36 := Fdjrag36, FHYD 36 = 139-.bf The hydrodynamic load is much lower than the minimum friction force between the sleeve and pipe, see sec. 4.2.2. Therefore the 36-inch repair is acceptable for hydrodynamic loads.

22

Calvert Cliffs Page: 23 of 301 aLTRan SOLiloNS Evaluation of Repair Sleeve By: Y.GanINRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 5.3.2 Check Hydrodynamic Loads Against Friction Force For 30 inch Ductile Iron PiDe FfminDl30

= 39.2 >>1 Therefore the sleeve will not be dislodged by flow induced forces.

FHYD_30 For 36 inch Ductile Iron Pipe Ffmin D136

- - 66.6 >>1 Therefore the sleeve will not be dislodged by flow induced forces.

FHYD_36 5.4 Check of the Sleeve Under Seismic Loads The seismic load required to cause the sleeve to slip axially within the pipe during a seismic event is calculated below.

5.4.1 Friction Force Available to Resist Seismic Loading The friction force available to resist the seismic load: FfSD is calculated by subtracting the hydrodynamic load: FHYD from the minimum friction force: Ffmin_DI.

For 30 inch Ductile Iron Pipe Ffmin_D130 = 9255.lbf FfSD130 := FfminD130 - FHYD_30 FSD130 = 9019*lbf For 36 inch Ductile Iron Pipe FfminD136 = 9237-lbf FfSD136 := FfminD136 - FHYD_36 FSD136 = 9099*lbf 23

Page: 24 of 30 aLTRan Calvert Cliffs GOuLAMa Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 5.4.2 Allowable Sleeve Seismic Axial Acceleration The allowable local acceleration at the sleeve is a function of the weight of the sleeve and the friction force available to resist the movement. A= F/m For 30 inch Ductile Iron Pipe Whs = 110.lbf FfSD130 ASD130 .

ASD130 = 82.g Whs For 36 inch Ductile Iron Pipe FfS0D136 As0D136 "-- ASD136 = 82.7-g g

These calculated allowable accelerations are greater than the maximum ground accelerations required for Class I structures in the design basis, CCNPP "Civil and Structural Design Criteria", Reference 15.

5.5 Check of Sleeve forAbnormal Loading Condition The abnormal configuration is assumed to occur if some of the retaining bands were to fail leaving the sleeve held in place by only one band. The worst case event would occur if one or more of the upstram bands failed, resulting in the sleeve folding back over the remaining downstream band. This would result in an increase in hydrodynamic drag with the potential for the sleeve to become dislodged and clog the pipe. The calculation conservatively assumes that the friction force from a single retaining band resists the hydrodynamic forces.

This condition is determined by first finding the hydraulic load.

For 30 inch Pipe The pipe inside diameter is:

Dpi_30 = 30.9-in The diameter of the orifice created by the folded over sleeve is:

tfold := 2tws + trb + tpt The folded over sleeve thickness is based on 2 layers of gasket material, the retaining band, and the push tab.

tfold = 0.975-in 2

Dab_30 : Dpi_30 - tfold Dab 30 = 28.95.in Cross-sectional areas of the folded section Fab_30 := *(Dab 30)2 Fpi- 30 = 749.906 in2 and the pipe.

- 4 Fab_30 Dhab_30 := 4.

"Dab_30 Dhab_30 = 28.95-in Hydraulic Diameter of the folded section.

24

aLT Ran Calvert Cliffs Page: 25 of 30 SLT,'iN2 Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Caic. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 LwS Lab 30 .

Dhab_30 Lab_30 = 0.684 Tab 30 := 0.6384 From figure in diagram 4-12 of [Ref 11] T is found from Lab.

Hydraulic loss for sleeve, represented as a thick edged orifice [Ref 11]

Check applicability of formula:

checkl  := if(Lab_30 > 0.015,"formula applicable" ,"out of bounds" ) checkl = "formula applicable" check2 := if(Repipe_3o > 105, 'formula applicable" , "out of bounds") check2 = "formula applicable" Fab-30 Fab 301 F Fab 30 Kab._30:= F 30 + F m + Tab_30" F "

) 30 pi_30 Fpi_30 )

Kabo_30 = 0.103 The pressure drop across the sleeve in the folded over condition is therefore:

Vpipe_30 A~ab-30 :=Pwtr_7 °F'Kab°-30" 2 2 APab_30 = 0.203-psi The hydrodynamic drag on the sleeve for the abnormal condition is therefore:

2 FHYD ab 30 := 2"APab_30"tr' D a*~j FHYD ab 30 = 305.lbf Including an impact factor of 2.

The hydrodynamic load of is much lower than the minimum friction force between the sleeve and pipe, see sec.

4.2.2. Therefore the 30-inch repair is acceptable for abnormal hydrodynamic loads.

25

Page: 26 of 30 Calvert Cliffs cLTRan sOunrngm Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 For 36 inch Pipe The pipe inside diameter is:

Dpi_36 = 37.04.in The diameter of the orifice created by the folded over sleeve is:

,k"ý 2tws + trb + tpt The folded over sleeve thickness is based on 2 layers of gasket material, the retaining band, and the push tab.

tfold = 0.975.in 2

Dab_36 := Dpi 36 - tfold Dab_36 = 35.09.in 4"(Dab 36)2 3. 2 Cross-sectional areas of the folded section Fab_36 := Fpi_36 = 1.078 x 10 .in and the pipe.

4 Fab_36 Dhab_36 := 4" -

Dhab_36 = 35.09.in Hydraulic Diameter of the folded section.

7T Dab_36 Lws Lab 36 Dhab_36 Lab_36 = 0.564 Tab_36 : 0.8764 From figure in diagram 4-12 of [Ref 11] T is found from Lab.

Hydraulic loss for sleeve, represented as a thick edged orifice (Ref 11]

Check applicability of formula:

4w":= if(Lab_36 > 0.015, "formula applicable" , "out of bounds" ) checkI = "formula applicable" shU=if((Repij >l0 , formula applicable", "out of bounds" ) hc2="oml plcbe 5 "f l ap i "t o Fab 36 2

_ Fab 36 ( Fab-36")

Kab,0 36  : 0.5 Fab 36) + Fpi_36

+ Tab_36- I - I Fpi_36 )

Fpi13 6 ) pi_36 Kabo_36 = 0.091 The pressure drop across the sleeve in the folded over condition is therefore:

Vpipe_362 APab_36  := Pwtr_ 7 0F" Kabo_36" 22 APab_36 = 0.086"psi 26

aLT Ran Calvert Cliffs Page: 27 of 30

,,LUMNT Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 The hydrodynamic drag on the sleeve for the abnormal condition is therefore:

2 FHYD ab 36 := -A~ab_3619'a~ FHYD ab_36 = 186.lbf Including an impact factor of 2.

The hydrodynamic load of is much lower than the minimum friction force between the sleeve and pipe, see sec. 4.2.2. Therefore the 36-inch repair is acceptable for abnormal hydrodynamic loads.

For 30 inch Ductile Iron Pipe FfminDI30

- 30.3 no slippage will occur during system operation with FHYDab_30 the sleeve folded over.

For 36 inch Ductile Iron Pipe Ffmin D136

- 49.6 >>1 no slippage will occur during system operation with FHYD ab_36 the sleeve folded over.

5.6 Check Backing Plate 5.6.1 Critical flaw size calculated via membrane stress In as much as the backing plate extends beyond the edge of the flaw and is fixed by the retaining bands and operating pressure of the system, it is reasonable to treat the reinforcement as a fixed support. Using calculation of the critical flaw size in this manner yields the following result:

22 Pd-dflaw. (I + V) 2 Pddflaw 2 Mc = = 1.Ol6dflaw Mr 8- - 1.563dflaw 16'4 8'4 2

Therefore, -max = 6-Mr = 2622.45dflaw thkback

.Sh for (Tmax < Sh it is required that, dflaw < = 3.09in 2622.45 The critical flaw size is: dflaw := 3.09in 27

Page: 28 of 30 aLTRafnSOLUM,.NS Calvert Cliffs Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 Calc. No: 11-2357-C-003, Chk: H Lu Date:1/8/14 Rev: 5 5.7 Cyclic Fatigue The Stainless Steel type AL6XN retaining bands were evaluated due to the thermal fatigue over the design temperature range of the system (Section 3.1)

For 30 inch Ductile Iron Pipe StressRange DI30  := O3THDl30I - ('THD1300 StressRangeD130 = 10475.psi O'TH_01301 -- OTHDI300 SALT-D130 := 2 SALT_D130 = 5237.psi 2

Per inspection of the design fatigue curve (Fig. 1-9.2.1 Ref.13), the number of cycles for SALT_D130 = 5237.psi is well above 10,000 cycles For 36 inch Ductile Iron Pipe Stress-RangeD136  := UTHDI361 - (TTHD136 0 StressRangeD136 = 10574-psi OaTH D1361 -- OTHD360 SALT-D136 := 2 SALTD136 = 5287.psi Per inspection of the design fatigue curve (Fig. 1-9.2.1 Ref.13), the number of cycles for SALTD136 = 5287.psi is well above 10,000 cycles Similarly the pressure cyclic range of 25 psi will induce negligible stress in the components and thus is also well within the Design Fatigue curve.

The EPDM rubber has an elongation of 350% per ASTM 412. This elongation of a non metallic material as well as its characteristic for high longevity due to its flexibility provide for the rubber gasket to have a fatigue life greater than the 10,000 cycles.

28

Page: 29 of 30 aLTRan Calvert Cliffs SOLUC*NS Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 CaIc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 6.0 Results/Conclusions:

This evaluation of the proposed sleeve assemblies indicates that the assemblies are acceptable for installation in the Calvert Cliffs Nuclear power station Service Water system noting the assumptions stated. Also one retaining band is capable of resisting hydrodynamic drag loads therefore 4 retaining bands are very conservative. The following summarize the results of the calculation.

" the maximum compressive stress at the installation in the retaining band is:

'c_chk = 20936.psi 0

( c chk This is - = 83.7.% of allowable stress Sh

• The required minimum wall thickness of the host pipe to support sleeve assemblies, The host pipe is either 30" with a wall thickness of 0.55 inches or 36" with a wall thickness of 0.63 inches.

For 30136 inch Ductile Iron Host Pipe tDl_30min = 0.387.in tDI_36min = 0.409.in

• The minimum friction force available force between the sleeve and the pipe wall to resist seismic and hydrualic loads follows. Note that this conservatively considers only one of the four retaining bands.

For 30 inch Ductile Iron Pine FfS-D130 = 9019.1bf For 36 inch Ductile Iron Pipe FfSD136 = 9099.lbf

" For maximum system flow conditions, the hydrodynamic load on the assembly, including an impact of 2, is:

For 30 inch Pipe FHYD_30 = 236-1bf For 36 inch Pipe FHYD_36 = 139.1bf

• If the sleeve inverts, the hydrodynamic load on the sleeve assembly for this abnormal condition is:

For 30 inch Ductile Iron Pipe FHYD ab_30 = 305.lbf D130 30.3 FHYD ab_30 29

Calvert Cliffs Page: 30 of 30 aLTRan GouCm*NO Evaluation of Repair Sleeve By: Y.Gan/NRao Date: 1/8/14 CaIc. No: 11-2357-C-003, Chk: H Lu Date: 1/8/14 Rev: 5 For 36 inch Ductile Iron Pipe FHYD ab_36 = 186.1bf FfminD136

- 49.6 FHYD ab_36 Therefore, since the hydrodynamic load on the sleeve assemblies is significantly less than the friction force between the sleeve and the pipe. The sleeve will remain stationary for the evaluated scenarios.

Note that this conservatively considers only one of the four retaining bands.

• The axial direction seismic acceleration required to dislodge the sleeve assembly is:

As_D130 = 82.g AS_D136 = 82.7-g This is significantly greater than common peak spectra accelerations. Therefore the assembly is seismically acceptable.

• The EPDM rubber gasket and retaining bands can withstand 10,000 cyclic movements.

Elongation := 350-% At this elongation 10,000 cycles is not limiting ref ASTM D-412.

SALT_D130 = 5237.psi SALT_D136 = 5287-psi This alternating stress is well below the endurance limit [Ref. 13].

Calculation Results Summary Table for Ductile Iron Pipe 30 inch Ductile Iron 36 inch Ductile Iron Maximum compressive stress of yield stress (c= ck=46.5-% °'c chk S= 46.5-%

at installation in retaining band Sy Required minimum wall thickness of the host pipe to support sleeve assemblies tDI_30mm = 0.387-in tDI_36mi = 0.409.in Minimum friction force available between the sleeve and the pipe wall to resist seismic FSD130 =9019.Ibf FfS-D136 = 9099.1bf and hydrualic loads follows Hydrodynamic load on the assembly FHYD_30 =236*Ibf FHYD_36 = 139.1bf with an impact of 2 Hydrodynamic load on the assembly with FHYIJ-ab_30 = 305 -Ibf FHyDJab_36 = 186-1bf an impact of 2 at sleeve invert condition Axial direction seismic acceleration ASD130 = 82*g AS_D136 = 82.7*g required to dislodge sleeve assembly Alternating stress due to thermal fatigue 3 SALTD130 = 5237-psi SALTD136 = 5.287 x 10 .psi Maximum flaw size at operating pressure A"=3.O9in dflaw = 3.09.in 30

ATTACHMENT A CALC. NO. 11-2357-C-003 aLT Ran Design Sketches PAGE I OF 4 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 ATTACHMENT A Design Sketches

ATTACHMENT A CALC. NO. 11-2357-C-003 aLTRan Design Sketches PAGE 2 OF 4 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 EXST.MORTAR (REMOVE INAREA AROUNDREPAIR)

RETAINING BAND (TYR 4) LONGITUDINAL CROSS SECTION CIRCUMFERENTIAL CROSS SECTION NOSCALE NO SCALE HOST PIPE OD 32.00" 3.8.30 HOST PIPE WALL THICKNESS 0.55- 0.63" RETAINING BAND OD 29.80- 35.94" RETAINING BAND THICKNESS 0.1875" GASKET LENGTH 19.79*

GASKET THICKNESS 0.300" NOTES:

1. FOR VERIFICATION OF CRITICAL DIMENSIONS ONLY.

2. WORK WITH CALCULATION 11-2357-C-001

3. BACKING PLATE OVERLAP SHOULD BE LOCATED ON OPPOSITE RETAINING BAND DETAIL SIDE OF THE HOST PIPE FROM THE FLAW.

NO SCALE I&

Im I CUENT CALVERT CLIFFS NPP TITLE IINTERNAL SLEEVE REPAIR SYSTEM I11-2357-C!OO1.

I DRAWING NO. M.1I SEET1 OF REV.

0

ATTACHMENT A CALC. NO. 11-2357-C-003 aLTRan Design Sketches PAGE 3 OF 4 Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE CLIENT/PROJECT Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 W.Uf ~ ~ WOMMM-Q w& -WITt ve USWM 11M1 mooC 5hU S550W~IC MTI 31S6-WI UO )M WT-CC) I.5 lIT W TW 10UT i

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m0 1T]zz Ib WI-

.C ~SCle.06.52 TICST~ rE SA Se CMnOC siU OlTf S

_TAI WWWUTA -C ""lCISI W M W TYPICAL CIRCUMFERENTIAL CROSS SECTION POO*= -STD-06A

ATTACHMENT A CALC. NO. 11-2357-C-003 Design Sketches PAGE 4 OF 4 Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE CLIENT/PROJECT Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14

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ATTACHMENT B CALC. NO. 11-2357-C-003 aLTRan Miscellaneous Information PAGE 1 OF 5 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 ATTACHMENT B Miscellaneous Information

ATTACHMENT B CALC. NO. 11-2357-C-003 cLTAn Miscellaneous Information PAGE 2 OF 5 CLIENT/PROJECT Constellation Energy/ Calvert CHifs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14

_Ma

ýke theýEOnn

.nneýctio.tn)ý 6XN , "N d Condition at -20OF to +1O0 °F Figure 1. AL6XN Material Mean Coefficient of Thermal Expasion from RathGibson.

(Reference 6: http://www.rathgibson.com/products by alloy/super austenitic/6xn.aspx)

ATTACHMENT B CALC. NO. 11-2357-C-003 a.TlRan Miscellaneous Information PAGE 3 OF 5 CConstellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, DATE CLIENT/PROJECT ApniB)PREP N Rao 181 Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CH-K'D H Lu DATE 1/8/14 Suandard DIhsmeuious and Weight~s o~fMedauiank-Joins Ductie-Ion Pipe (coxid.)

t8-Pt Laying Length 20-Ft Laying Lenath Wt.o Wt.Of

. lass is. n. Per Ft A Wt. Per Avg.W . Per Avg. W.

. A . WPert. PerPt1

_ __ _ _ _ _ IlbIL lb _ _

18 0.38 19.55 69.8 1'11 1,365 76.0 1.505 75.4 80.8 2 0.41 19.50. 7S.2 1.11 1,560 81.4 1.615 1.723 3 0.44 19.50 80.6 allI 111 86.8 86.2 0.47 19.30 86.0 1.660 92.2 1.63o 91.6 4 111 a0 18 0.50 19.50 91.3 1.755 97.5 96.8 102.2' 20 6 0.53 19.50 96.7 111 1.850 102.9 20 1 O.39 2160 79.5 131 86.8 1.720 86.0 20 2 0.42 21.60 85.S 131 1,670 92.8 92.0 20 3 0.45 21.60 91.5 131 1.750 98.8 98.0 21.60 97.5 131 1,885 104.8 2X40 104.0 20 4 0.48 2,2O 5 0.S1 21.60 103A 131 1.9"0 110.7 110.0 6 0.54 21.60 109.3 131 2.100 116.6 2.315 115.8 24 1 0.41 25.80 100.1 174 1,975 109.8 2.17S 103.8 2.105 2.320 3316.0 24 2 0.44 25.80 107.3 174 117.0 24 3 0.47 25.80 114.4 174 124.1 240 123.1 24 4 0.50 25.80 121.6 174 2.36S 131.3 25,05 130.3 24 5 0.53 25.80 128.8 174 2,490 1385 2.750 137.5 0.56 253.0 135.9 174 29620 145.6 2.890 144.6 24 6 1 0.43 32.00 130.5 216 2.565 142.5 2.2 144.3 30 30 2 0.47 32.00 142.5 216 154.5 153.3 30 3 0.51 ISSA 216 2.995 166.4 3.305 165.2 16A3 216 3.210 178.3 177.1 30 4 0.55 32.00 3.425 189.0 30 5 0.59 32.01 178.2 216 190.2 190.0 216 3.635 202.0 2O0.8 6 0.63 32AD0 4.015 30' 374.5 190.0 1 0.48 38.30 38.30 310 340 8.775 191.7 3.SAW 36 32 0.53 192. 310 4*9 209.6 4.160 207.9 36 3 0.58 38.30 38.30 210.3

-528.1 310 227.5 4.531 225.8 36 0.63 310 4.415 245.3 4.870 243.6 36 0.68 38.30 245.9 310 4.735 26.1I 51230 261.4 0.73 38.30 26&7 310 280.9 4,885 5.585 2"9.2 36 6 5.O55 44.50 224.0 403 2.44.2 42 0.53 51385 5,885 42 2 0.59 44.50 249.1 405 269.4 42 3 0.65 44.50 274.0 405 S.3O5 298.2 0.71 44.50 298.9 405 319.2 42 4 44.50 6.880 42 0.77 405 42 6 0.83 44.50 348.4 405 7.375 368.6 4L60 505 48 1 O.58 5O.80 280.0 6.105 30&.2 48 2 0.6.5 31&4 505 6.775 3318.6 48 3 L.72 5MJ 346.6 5053 7.435 371.8 ie 48 4 0.79 50.80 379.8 305 8.100 40,5O 48 5 0.86 412.9 505 8.765 438.2 48 6 0.93 50.80 445.9 505 9.42S 471.2

• Tolerances ofOD of spigot end. 3-12 in.. th0.06 In.; 14-24 In., +0.05 I+ . .-0.08 Ima; 30-48 In., +0.08 I.,

t Th. mecbanil Joint bell for 30-48In. sizes of duteIroan pipe have thicknesses different from shown In ANSI A2L.1(WWA CI1). which are based on ErerondPe. These redgced thicknesses prCvte ater weight bell, w Is compatlbe with the wail thicknesses of uIctie-Iran pipe. The Internal ocket bolt circle, and bolt holes of the redesigned hell remain Identilca to those specitead In A21.11 (AWWA CIII) to assure interhan the joint.

i nclding ,ec;alculted weight of pipe rounded off to nearea t 5 lb.

Icuigbell 1average weight per foot. based an cialclated weight of Pipe before rounding.

Figure 2. Standard Dimensions and Weights of Mechanical-Joint Ductile-Iron Pipe from Cast Iron Pipe Research Association (Birmingham, AL).

The*dcged oedeo (l/Dh > 0.015) in a atbkht tube (dcmnnl); Dlpm-Re- wDt*v > 10' 113. 141 4-15 W,

o/2f" 54I ,[,

whom U/Dh),

- weethe table hela* or sraph a of Diagram 4-12; we Chapter 2ath = 0.02 fortOw values of t, =t(JIDhF/Fj) soethegraph Values of~

I FORl Dh 1 0.02 0.04 0.06 0.08 0.10 0.15 0.20 0.25 0.30 0.40 O.SO 0.60 0.70 0.80 0.90 3.0 0 1.35 7000 1670 730 400 245 96.0 Sl.S 30.0 18.2 8.25 4.00 2.00 0.97 0.43 0.13 0 0.2 1.22 6600 1600 687 374 230 94.0 48.0 28.0 17.4 7.70 3.75 1.87 0.91 0.40 0.13 0.01 OA 1.10 6310 1630 660 356 221 89.0 46.0 26.S 16.6 7.40 3.60 1.80 0.88 0.39 0.12 0.01 0.6 0.84 5700 1380 S90 322 199 81.0 42.0 24.0 15.0 6.60 3.20 1.60 0.80 0.36 0.12 0.01 0.8 0.42 4680 1130 486 264 164 66.0 34.0 19.6 12.2 6.30 2.70 1.34 0.66 0.31 0.11 0.02 3.0 0.24 4260 1030 443 140 149 60.0 31.0 17.8 11.1 5.00 2.40 1.20 0.61 0.29 0.33 0.02 iA 0.10 3930 950 408 221 137 $5.6 28.4 16.4 10.3 4.60 2.25 1.15 0.58 0.28 0.11 0.03 2.0 0.02 3770 910 391 312 134 53.0 27.4 15.8 9.90 4.40 2.20 1.13 0.58 0.28 0.12 0.04 3.0 0 3765 913 392 214 132 53.3 27.5 15.9 10.0 4.50 2.24 1.17 0.61 0.31 0.15 0.06 4.0 0 3775 930 400 216 132 53.8 27.7 16.2 10.0 4.60 2.25 1.20 0.64 0.35 0.16 0.08 S.0 0 3850 9386 400 220 133 SS.S 28.5 16.5 10.5 4.75 2.40 1.28 0.69 0.37 0.20 0.10 6.0 0 3870 940 400 223 133 55.8 28.S 16.6 10.5 4.80 2.42 IJ2 0.70 0.40 0321 0.12 7.0 0 4000 950 403 230 135 $5.9 29.0 17.0 10.9 5.00 2.60 1.38 0.74 0.43 0.23 0.14 8.0 0 4000 965 410 336 337 56.0 30.0 17.2 11.2 5.10 1.58 1.45 0.78 0.45 0.26 0.16 9.0 0 4080 983 430 240.440 $7.0 30.0 17.4 11.4 5.30 2.62 1.50 0.80 0.50 0.28 0.18 10 0 4110 1000 430 245 146 59.7 31.0 M8.2 13.5 SAO2.80 1.57 0.89 0.63 0.32 0.20 Figure 3. Coefficient of Fluid Resistance (pressure loss coefficient) in Thick-edged Orifice in a Straight Tube, Reference 11.

Thicko.ded orifice UIDh > 0.015) Installed In a transtion DIa8rm secton; Re = wDv > 10' 113,14] 4-12 D1, = 4FO no

(* ,)+I I i, F

\P2/DA

? t1 whernve-lDh);

Dh for h meeChapter 2 I

1 0 0.2 0.4 Dh 0.6 0.8 v 1.35 1.22 1.10 0.84 0642 1.0 1.2 1.6 2.0 2.4 7 0.24 0.16 0.07 0.02 "0 Figure 4. Coefficient of Fluid Resistance (pressure loss coefficient) in Thick-edged Orifice Installed in a Transition Section, Reference 11.

ATTACHMENT B CALC. NO. 11-2357-C-003 aLTRa' Miscellaneous Information PAGE 5OF 5 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14

-F K-ccril 2..

I -

. .. "C I1L.10% i ",

I KcýI I

a L{~A4 4..' -I USEFUL INIrOIIMATION WEIGHTS (;ONVIAIHVI OF1tI01l II.I* IIMIEN 1IPE1 II WA I V.l14 AND Pipe Wolgltl.llh/I. Il'1tih-on joint)

Size4 In. PMitIWI,) 4 Water (Ww)#

3 10 . 3 4 3 6 6 :1 12 a 30) 22 10 311 34 12 491 49 14 67fi6 16 88 18 110 20 I JlI' 36 24 ,,19 396 30 I l¶1 307 36 1lit 1 422 42 .. 601 48 ~ i 785

'Based on Class 2 push , Idmfl dtlzlhlo Iron pipe In 20 ft.

lengths.

IBased on nominal pllm MlP1m, USEFUl. INOI'IMA'fION LINEAR EXPANSION OF OUTILE IRON PIPE The coefficient el Itnuar 4upamilnn ol ductile Iron may be taken as 0.0000(X62 pil, s(h'roo Fahrenheit. The ex-pansion or contracltio In hgichoi Ilml will take place In a line offgven length with vartgn Iomiprdlure changes Is'l shown In the followlng Inlilo:

Temp. LENGTH OF LINE IN FEET Difference -

IF 100 500 1000 9260 5 0.037 0. 19 0.37 1.96 10 0.014 03:7 0.74 3.93 20 0.149 -A.74 0.15 7.86 30 0.223 1.12 2.23 11.78 40 0.298 1.49 2.98 15.71 50 0.372 1.116- 3.72 19.64 60 0,446 2.23 4.46 23.57 70 0.520 P.60 5.20 27.50 80 0.595 2.98 5.95 314A3 90 0.670 3l.36 6.70 35.35 100 0.744 :1.72 7.44 39.28 2&-L 1.A 120 0.893 4.46 8.93 47.14 150 1.116 5.5* 11.16 58.92 72 iii

-I-Figure 5. Excerpt from CIPRA, Guide to Installation of Ductile Iron Pipe, Cast Iron Pipe Research Association, Oakbrook, IL, 1972, (Reference 19).

ATTACHMENT C CALC. NO. 11-2357-C-003 aLTRFlan Email Correspondence PAGE I OF 3 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 ATTACHMENT C Email Correspondence

ATTACHMENT C CALC. NO. 11-2357-C-003 aLTRan Email Correspondence PAGE 2OF 3 Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE CLIENT/PROJECT Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 From: Mike Fox Fmailto:mike.fox(hydratechllc.com]

Sent: Wednesday, November 30, 2011 4:35 PM To: Hammelmann Robert

Subject:

RE: Hydraulic loading during installation

Robert, The recommended expander pressure is 3500 psi (for both sizes)

The cylinder bore size is 1.69" (typical expander). We do have a smaller expander with 1.00" cylinder Based on the 1.69" cylinder and 3500 psi, the imposed pressure on pipe is estimated as follows:

Contact pressure on L.D of pipe for 30.4" = 260 psi Contact pressure on L.D of pipe for 36.54" = 215 psi Compression force on retaining band = 7850 psi Michael Fox HydraTech Engineered Products Office: 513.827.9169 Mobile: 513.404.9701

[T 'ATTACHMENT C CALC. NO. 11-2357-C-003 Email Correspondence PAGE 3OF 3 PREP N Rao DATE CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, 1/8/14 Appendix Bo)e CALC. TITLE IEvaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 Chock Alfred From: Hussain, Emran M <Emran.Hussain@cengllc.com>

Sent: Tuesday, February 21, 2012 3:53 PM To: Hammelmann Robert Cc Drake, Andre S

Subject:

FW: Important message from Constellation Energy Attachments: Document.pdf Categories: Blue Category Bob,

1. For pressure, use Document 92769, rev. 49 2. Flow Rate use UFSAR rev. 43; Pump flow rate 2 x 20,000 gpm = 40,000 gpm which is slightly higher than your number.

Emran

---

Original Message~--

From: PRT4293 Imallto:PRT4293@ceg.corl-.net]

Sent: Tuesday. February 21, 2012 3:50 PM To: Hussain, Emran M

Subject:

Important message from Constellation Energy Please open the attached document. This document was digitally sent to you using an HP Digital Sending device.

>>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, this e-and are intended solely for the addressee. If you are not the intended recipient, do not use the information In mail in any way, delete this e-mail and notify the sender. CEG-IP1

ATTACHMENT D CALC. NO. 11-2357-C-003 aLTRan Miscellaneous Calvert Cliff D PAGE I OF 2 CLIENT/PROJECT Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, CAppendix B)

CALC. TITLE Evaluation of Repair Sleeve Assemblies ATTACHMENT D Miscellaneous Calvert Cliff Documents

D CALC. NO. 11-2357-C-003 caaRcan Miscellaneous ATTACHMENT Calvert Cliff Documents PAGE 2 OF 2 Constellation Energy/ Calvert Cliffs Nuclear Power Plant (10 CFR 50, PREP N Rao DATE CLIENT/PROJECT Appendix B) 1/8/14 CALC. TITLE Evaluation of Repair Sleeve Assemblies CHK'D H Lu DATE 1/8/14 63GE D:*euinsnt 92769 Page 47 o87 ]isio. 49 Figure 5. Calvert Cliffs M-601 Piping Class Summary Sheet No. LC-1 for Salt Water System (underground) Design Rating.