ML052650219

Rev. 0 to Calculation 0108-0236-01

ML052650219
Person / Time
Site:	Salem
Issue date:	09/13/2005
From:	MPR Associates
To:	Office of Nuclear Reactor Regulation
References
0108-0236-01
Download: ML052650219 (8)

Text

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 MPR Associates, Inc.

• MLPR 320 King Street Alexandria, VA 22314 RECORD OF REVISIONS Calculation No. Prepared By l ecked By Page: 2 01RA8-0236-01 Page Description Revision IAffected Pages Description 0 All Initial Issue

• Note: The revision numberfound on each individualpage of the calculationcariesthe revision level of the calculationin effect at the time that page was last revised.

MPR OA Form OA-3.1 -Z Rev. 0

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 MPR Associates, Inc.

-F 320 King Street Alexandria, VA 22314 Calculation No. Prepared By Checked By Page: 3 01080236-01 _ Revision: 0 Table of Contents A

1.0 Purpose...... ................................................... ..... .. ......... a.....................................

2.0 Summary.... ............ ................................ .................... ......................................... 4 3.0 Inputs ........ I od ....................................

.................................................................... w 4.0 Calculation. . ........................................................ . . .6 4.1 Minimum Wall Tickness . . . ............................................................. 6 4.2 Reinforcement of Opening ............................................................ . . . .. 6 4.3 Required Area of Reinforcement . . . . 6 4.4 Limits of Reinforcement . . . .............................................................. 7 4.5 Metal Available for Reinforcement ...................................................... . . . . 7 5.0 References ......................................................................................................... 9 MPR OAFormn: QA-3.13,Rev. 0

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 Calculation No.:

OY^ Gc}0108-0236-D1 MPR Associates, Inc. PreparedB. J Revision No.: 0 320 King Street Checked Byr.Ra g10gV.4 Alexandria VA 22314 C e .AP a?-. OCC. Page No.: 4 1.0 PURPOSE This calculation documents the size hole that can be tolerated in the Salem Unit I ITT 4-inch Nuclear Diaphragm Valve.

The analysis is conducted in accordance with the 1971 ASME Code,Section II, Subsection NB, with addenda through Winter 1971. Allowable stresses are for a Class 3 component.

2.0

SUMMARY

If reinforcement available in the valve body wall is considered due to a wal thickness thicker than required to meet minimum wall thickness requirements, then a postulated hole as large as:

dhole = 0.75 In is permissible.

The margin, which is defined as the available reinforcement divided by the required reinforcement is:

Mcinf a = 6.4 Maeifb = 9.3 The two margins are for the two requirements of the code, i.e., that 100% of the required reinforcement is to be within the distance L4ar, from the axis of the opening, and that 2/3 of the required reinforcement is to be within the distance lvu2 from the axis of the opening.

For information, the minimum size opening in the valve body adjacent to the valve body flange that does not require reinforcement is:

dopen-min = 0.15 in

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 Calculation No.:

WMPR X -IOB-0236-01 MPRAssociates, I Prepared By: A.5L4 Revision No.: 0 320 King Street ChIked By: iA- y PageNo.: 5 Alexandria VA 22314 Ch2edB:a ,d'L p-~Pg N.

3.0 Inputs P : 200puig Design pressure (Ref. 2. Note 3)

Tdes- 160F Design temperature (Ref. 2, Note 3)

S = 0.8.16.5ksi S e 13.2 ksi Design stress intensity for SA-351, Grade CF8M at 200F, which bounds the design temperature; a casting factor of 0.8 Is applied, which Is the lowest value in Ref. 1, Table l-7.2 Note 4 (Ref. 1,Table 1-7.2 for design stress intensity and Ref. 2 for material) twal := 0.2Sin Minimum thickness of valve body (Ref. 2. Note 6) do-= 4.5in Approximate outside diameter of valve; based on OD of 4 sch. 40 pipe (Ref. 3) do - twall rm 2 rm = 2 .l 3 in Mean radius of valve body dholc := 0.75-in Postulated hole diameter in valve body at the approximate location of the valve flange

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 3279"28 001 1 PRINTED 20050810 EaMPRu MPR Associates, Inc. Prepared By:

Calculation No.:

0108-0236-01 Revision No.: 0 32D King Street By: Po A 4Pg o Alexandria VA 22314 'Checked By .~d~A-~Page No.: 6 4.0 Calculation 4.1 Minimum Wall Thickness Per NB-3332.2, the required area of reinforcement is based on the required thickness of the valve body at the location in the absence of an opening. Per NB-3324. 1, these required thickness is:

Pjdo tr = 0.0338 in t: 2(5 + 0.5 P) where P = 200 psi do= 4.5 In S = 13.2 ksi 4.2 Reinforcement of Opening Openings meeting the requirements of NB-3332.1 do not require reinforcement. The maximum opening diameter not requiring reinforcement is:

m dopenzmin 0.2-V;r; ia dopeninin = 0.146in where rm = 213 in t

wall = 0.25in 4.3 Required Area of Reinforcement The required area of reinforcement for an opening is defined by NB-3332.2:

Areinf req ` dhole-r A4renfn req _ 0.0254in where dholO = 0.75 in ir= 0.0338 in

USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 Calculation No.:

Prepared . ,,0108236-01 MPR Associates, Inc. PreparedBy: j Revision No.: 0 320 King Street Alexandria VA 22314 Checked By: &dN#Jitti - Page No.: 7 4.4 Limits of Reinforcement NB-3334.1 provides the distance from an opening within which 100% of the required reinforcement is to be located parallel to the vessel wall. NB-3334.1 also provides the distance from an opening within which 2/3 of the required reinforcement is to be located parallel to the vessel wall. These parallel distances (Lapq, and Lpar2, respectively) are calculated below. A corrosion allowance is not included in these calculations since the material is stainless steel.

Lparl :=max(dhlc, , dl twan Lparl - 0.750 in where dhole = 0 75 in twal1 = 0.25 in Lpar2 2dhole + t.5.r, a Lpar2 0.739 in where do = 4.5 in rm = 213 in 4.5 Metal Available for Reinforcement Per NB-3335, valve body metal available for reinforcement is that which is in excess of the minimum required wall thickness. The metal parallel to the vessel wall that is available for reinforcement based on NB-3334.1 is:

Apardi' (2Lpari - dhole)-(twall - tr) Apart = 0.162in2 Apar2 := (2Lpaj.2 - dhole)-(twali - tr) Apa, 2 = 0.158in2 NB-3334.1 states that 100% of the required reinforcement is to be within the distancedLpa from the axis of the opening and that 2/3 of the required reinforcement is to be within the distanceLpar2 from the axis of the opening. The required reinforcement area is:

Areinf req = 0.0254 in

• USER RESPONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 .

RIMRPeae MPR Associates, Inc.

y Calculation No.:

0108-0236-01 Revision No.: 0 320 King Street A 234Checked Alxadra By: po"odv-""' 41- Page No.: 8 Alexndri VA2231 .a 7s- in at(i2 The margins of the actual to required reinforcements areas are:

Mreinf a Arl mrenfb

• 2Apar2 6reinfre9 3Areinf req 31 Mceinf a = 6.39 Mrjfp=9.31

• USER RESeONSIBLE FOR VERIFYING REVISION, STATUS AND CHANGES VTD 327928 001 1 PRINTED 20050810 Calculation No.:

M I M -R--0108.0236-01 MPR Associates, Inc. Prepared By: Revision No.: 0 320 King Street Checked By. r-V~ Apr Pg N.

Alexandria VA 22314 Page No.: 9 5.0 References

1. 1971 ASME Code, Section HII, Nuclear Power Plant Components, with addenda through

. Winterof 1971.

2. ITT Engineered Valves Drawing No. SD-C-101869, 14" Nuclear Diaphragm Valve, H.

. W. O., Revision G.

3. Crane Technical Paper No. 410, "Flow of Fluids through Valves, Fittings, and Pipe, 1991.