ML19253A213

Responds to IE Bulletin 79-14 Re Seismic Analysis for as-built safety-related Piping Sys

ML19253A213
Person / Time
Site:	Davis Besse
Issue date:	08/01/1979
From:	Jeffery Grant TOLEDO EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7908200113
Download: ML19253A213 (14)

Text

Docket No. 50-346

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. CO License No. NPF-3 e Scrial No. 1-81 August 1, 1979 M rotroo

% EDISDN Mr. James G. K." la r Regional Director. Xegion III JAMES S. GRANT Office of Inspection and Enforcement v.c. er...o.m E""S' S***

United States Nuclear Regulatory Commission "85'-5*'*

Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

IE Bulletin No. 79-14, dated July 2, 1979, requested that we develop and implement an inspection program to verify that the Davis-Besse Nuclear Power Station Unit 1 seismic analysis input for safety related piping system conforms to their actual field configuration.

Attached is our response to Item No. 1 of Bulletin No. 79-14.

In our response we have color-coded a set of Piping and Instrumentation Drawings which identify the accessible redundant and non-redundant system and the inaccess-ible systems to be it;.2pected. A list of the design documents which each system will be inspected against is included in the inspection package for that system.

In order to neet the submittal date for our response to Item No. I we have only enclosed the detailed inspection package for the high pressure injection systen.

Similar inspection packages for the remaining syetems will be available for your raview at the site- This approach was reviewed with Mr. E. L. Jordan of the Office of Inspection cnd Enforcement, Washington, by Bechtel Power Corporation, our architect engineer, on July 19, 1979.

We have reviewed the time required to perform the inspection and report the results under Item No. 2 of Bulletin No. 79-14. The ear ~iest proj ect completion date is October 1, 1979.

As indicated in our attachment, based upon our findings from Item No. '. c'.i the piping in the inaccessible areas will be scheduled for inspection by the end of the first refueling outage, currently planned for March, 1980, and a report submitted under Item No. 3 of Bulletin No. 79-14.

Yours very truly, W#

JSG:CLM cc:

United States Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Operations Inspection Washington, D. C. 20555 United States Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Division of Operating Reactors Washington, D. C. 20555 THE TOLEDO EDISON COMPANY EOtSON PLAZA AUG g;94 300 MADISON AVENUE TOLEDO. OHIO 43652 801 301 roosecold .

t Docket No. 50-346 License No. NPF-3 Seria] No. 1-81

. August 1,1979 Seismic Analysis for As-Built Safety Related Piping System:

Response to NRC IE Bulletin No. 79-14 Davis-Besse Nuclear Power Station Unit 1 I. INTRODUCTION NRC IE Bulletin 79-14, dated July 2,1979 and Revision 1, dated July 18, 1979 require all power reactor facility licensees and construction permit holders to verify that the seismic analysis applies to the actual co figuratian of the safety-related piping systems. The action items identified in the bulletin apply to all safety reldted piping, 2-1/2 inches in diameter and greater, and to Seismic Category I piping, regardless of size which was dynamically analyzed by computer.

This report is a response to Item 1 of the bulletin and a description of the program planned for Items 2 and 3.

II. Action Item 1:

Identify inspection elements to be used in verifying that the seismic analysis input information conforms to the actual configuration of safety-related systems.

For each safety-related system, submit a list of design documents, including title, identifimation number, revision and date, which were sources of input information for the seismic analyses. Also submit a description of the seismic analysis input information which is contained in each document. Identify systems or portions of systems which are planned to be inspected during each sequential inspection identified in Items 2 and 3. Submit all of this information within 20 days of the date of this bulletin.

Response

, Analysis Input In seismic stress analyses the piping system is mathematically modelled as a series of lumped masses connected by massless elastic members. The primary physical parameters that influence the analyses are the actual configuration of piping, concentrated masses, such as valves, and the type and location of pipe supports.

A. The actual configuration of the piping is identified by means of a piping isometric or physical piping drawing. This document shows the piping geometry, pipe size, location of fittings such as bends, elbows, tees and reducers; components su~h as valves, inline strainers, etc.; and equipment such as punps; heat exchangers, etc.

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B. Concentrated masses are modelled in the seismic analysis considering their location, weight, center of gravity and orientition with respect to the piping. This information is obtained from the manufacturers' equipment drawings and the physical piping drawings.

C. Pipe support detail drawings show the complete design of the support.

These documents, which were used for fabrication and installation, provide the location, type, direction and other details of the supports.

The current revision of each of the documents noted above will be used in the inspection walkdowns. In addition, each floor and wall penetration wif* be checked to determine if it binds the piping or allows free movement through the penetration.

Safety Related Systems The bulletin requires that the actual configuration of the safety-related piping systems conforms to the seismic analyses. The following systems or portions of systems are considered safety related as defined in the bulletin and within the. scope of this response:

1. Main Steam System

2. Auxiliary Feedwater System

3. Staam Generator Drains System

4. Main Feedwater System

5. Hydrogen Dilution System

6. Reactor Coolant System

7. Pressurizer Relief System

8. Make-up and Purification System

9. Decay Heat Removal and Low Pressur - 11jection System

10. High Pressure Injection System

11. Core Flood System

12. Containment Spray System

13. Spent Fuel Pool Piping System 14 Component Cooling Water Syste '

15. Caseous Radwaste System

16. Service Water System

17. Sump Pump Discharge System (ECCS Rooms)

18. Fuel Oil and Diesel Generator Systems

19. Miscellaneous Containment Penetrations Attachment 1 to this response is a complete set of Piping and Instrumentation Diagrams (P&ID's). These diagrams have been color-coded to identify the accessible redundant and non-redundant systems and the inaccessible systems to be inspected by this program.

It is planned to inspect and report on all the piping in the accessible areas within 90 days from the bulletin issue date.

If a high degree of confidence is established o*n the conformance of the as-built installation with the design in the accessible areas, all the piping in the inaccessible areas will be. inspected and a re" port submitted under Item 3 of ,

the bulletin at the first scheduled refueling outage. This outage is currently scheduled for March, 1980.

80) 303

If non-conformances are identified, a schedule for evaluation and resolution will be provided in accordance with the requirements of Item 4 of the bulletin.

In addition, the inaccessible piping will be inspected subsequent to a shutdown planned for not later than 120 days from the date of the bu?.letin.

Inspection Package For each safety-related piping system, an inspection package will be used by the walkdown team to check the conformance of the physical arrangement in the plant to the design documents. This package and the level of detail to be inspected will include:

1. The current revision of the physical piping drawing and a checklist to verify the piping run geometry and the location of pipe fittings, tees, elbows, branch connections and concentrated masses, such as valves.

2. A valve drawing for each different valve on the piping drawing and a checklist to verify thct the valve installed in the piping system is the valve indicated on the valve drawing and that the orientation of the valve and operator with respect to the pipe axis is as shown on the piping physical drawing. Subsequent to the as-built verification, a comparison of the valve weight shown on the valve drawing will be made with the valve weight used in the analysis.

3. A inspection checklist for each floor and wall penetration will be used for checking the type of penetration closure (grout, rubber, etc.) against the design drawing. If the penetration is open, the clearances will be checked.

4. The pipe support detail drawing and a checklist for each pipe support and pipe anchor in the piping system will be used to verify locatien, orientation (direction), type, proper size, and that the support installa-tion is in accordance with the design document. Attachment of the support to the pipe will also be checked. Proper installation of concrete expan-sion anchors has been verified under the response to NRC IE Bulletin No.

79-02, and therefore, will not be an inspection element in this effort.

Attachment 2 to this response is the inspection package for' the High Pressure Injection System which is a safety-related piping system. This complete package is being submitted as an example of the information to be utilized for all systems, in lieu of the requested list of design documents, to expedite submission of the response to Item 1 of the bulletin. Inspection packages for each system to be inspected will be available for NRC review upon request.

Upon completion of the facility inspection effort, a comparison of the existing piping physical arrangment as recorded in the walkdown will be made against the seismic stress analysis problem input data. Any deviations and nonconformances will be evaluated in accordance with the guidelines established in Item 4 of the bulletin.

t 801 304

ATTACHMENT 1 Color Coded Piping and Instrumentation Diagran,,s The P&ID's have been color coded to identify the different systems or portious of systems that will be inspected under Items 2 and 3 of the bulletin.

1. Yellow signifies all accessible non-redundant systems and one train of accessible redundant systems.

2. Green signifies the other accessible train in the redundant system.

3. Blue signifies systems that are in the inaccessible areas.

e W

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ATTACHMENT 2 High Pressure Injection System Inspection Package Part A - Piping and Instrumentation Diagram Decay Heat Removal System and Emergency Core Cooling Systems Drawing No. 7749-M-033, Rev. 33, April 20, 1979 Part B - List of Piping Physical Drawings Piping Physical Drawing Checklist Floor and Wall Penetration Checklist Four Isometric Drawings Part C - List of Valves Valve Checklist Eleven Valve Drawings Part D - List of Pipe Anchors Pipe Anchor Checklist Seven Pipe Anchor Drawings Part E - List of Pipe Support Pipe Support Checklist 114 Pipe Support Drawings 9

0 0

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ATTACHMENT 2 Part B

_High Pressure Injection System List of Piping Physical Drawings Piping Revision Revision Drawing No. No. Date Title 7749-M-233B 16 Mar. 2,1978 Emergency Core Cooling Systems - Pump Suction Piping 7749-M-233D 13 Feb. 2, 1977 H. P. Injection System Auriliary Building 7749-M-233E 5 Nov. 6, 1975 H. P. Injection System Containment Building 7749-M-233F 10 Mar. 3, 1977 Low Pressure Injection System Auxiliary Building

• 6 801 307

Attachment 2 Part B PIPING PHYSICAL DRAWING CHECKLIST SYSTEM:

Piping Drawing No. Rev. No.

1. Does the piping installation agree with the isometric?

2. Is all of the piping physically accessible?

If no, indicate on drawing what portion was not inspected and give the reason here:

3. Do the valve installations afree with the piping drawing?

If no, list valve numbers her,:

4. Are all floor and wall penetrytions shown on the piping drawing?

If no, indicate locations on piping drawing.

Note any deviations on the piping drawing.

IN3PECTION TEAM NAME Date ,

NAME Date 801 308

I Attachment 2 Part B e

FLOOR AND WALL PENETRATION CHECKLIST SYSTEM:

Piping Drawing No. Rev. No.

Penetration Sequence No.

1. Is the penetration shown on the piping drawins,7 If no, indicate on the piping drawing tF.e location of the penetration and identify floor or wall penetrated.

2. Indicate penetration clesure method Grout Bisco Foam Bisco rubber (hard)

Bisco boot Open (no closure)

Other

3. If open, indicate clearances less than 2". gp N e W E i

,' ~

S EN IMOKING D&%'ARD IDOKING DIRECTION:

4. If for any reason, this penetratior is inaccessible, indica.te here . ---- --

and give the season why.

i, INSPECTION TEAM 5 NAME Date NAME Date 801 309

ATIACHMENT 2 High Pressure Injection System Part C List of Valves Vendor Valve Valve Foreign Vendor No. Description Manufacturer Print No. Drawing No. Rev. Date Piping Drawing No. 7749-M-233B B25-1 6"-GCB-GT Velan M-212-8-8 P3-1012-N-41 F Feb. 20, 1974 B25-2 6"-CCB-GT Velan M-212-8-8 P3-1012-N-41 F Feb. 20, 1974 B26-1 6"-GCB-CK Velan M-212-6-8 P3-1012-N-6 J Feb. 05, 1976 B26-2 6"-CCB-CK Velan M-212-6-8 P3-1012-N-6 J Feb. 05, 1976 Piping Drawing No. 7749-M-233D B59-3 4-HCB-GT Velan M212-3-6 P3-1012-N-2 E Feb. 10, 1977 B59-2 4-HCB-GT Velan M212-3-6 P3-1012-N-2 E Feb. 10, 1977 B59-4 4-HCB-GT Velan M212-3-6 P3-1012-N-2 E Feb. 10, 1977 B59-5 4-HCB-GT Velan M212-3-6 P3-1012-N-2 E Feb. 10, 1977 HV HP2D 2 1/2" Control Viv Velan M525-006 P-3521L-3A D Sep. 25, 1972 HV HP2C 2-1/2" Control V1v Velan M525-006 P-3521L-3A D Sep. 25, 1972 B7-3 4-CCB-CT Velan M212-26-4 P3-1012-N-18 C Aug. 08, 1973 B9-1 3-CCB-CL Velan M212-25-5 P3-1012-N-23 C May 14, 1979 B93-1 3-CCB-CK Velan M212-33-3 P3-1012-N-24 C Aug. 14, 1973 HV1556 3" Control V1v Hammel Dahl M314-042 V510L-9A 3 Sep. 07, 1973 B10-18 2 1/2-CCB-GT Velan M212-11-8 P3-1012-N-11 H Mar. 15, 1974 B7-2 4-CCB-GT Velan M212-26-4 P3-1012-N-18 C Aug. 08, 1973 B6-2 4-CCB-CK Velan M212-33-3 P3-1012-N-24 C Aug. 14, 1973 B7-4 4-CCB-GT Velan M212-26-4 P3-1012-N-18 C Aug. 08, 1973 B7-1 4-CCB-GT Velan M212-26-4 P3-1012-N-18 C Aug. 08, 1973 B6-1 4-CCB-CK Velan M212-33-3 P3-1012-N-24 C Aug. 08, 1973 HV HP2B 2 1/2" Control Viv Velan M525-006 P-3521L-3A D Sep. 23, 1972 HV HP2A 2 1/2" Control V1v Velan M525-006 P-3521L-3A D Sep. 23, 1972 B47-1 3-HCC-CK Velan M212-5-7 P3-1012-N-5 F Feb. 10, 1974 Piping Drawing No. 7749-M-233E B96-4 2 1/2 "-CCA-CK Velan M212-3-3 P3-1012-N-24 C Aug. 14, 1973 B2-4 2 1/2"-CCA-SCK Velan M212-10-7 P3-1012-N-10 H Sep. 16, 1974 B2-3 2 1/2"-CCA-SCK Velan M212-10-7 P3-1012-N-10 H Sep. 16, 1974 B96-3 2 1/2-CCA-CK Velan M212-33-3 P3-1012-N-24 C Aug. 14, 1973 B96-1 2 1/2-CCA-CK Velan M212-33-3 P3-1012-N-24 C Aug. 14, 1973 B2-1 2 1/2-CCA-SCK Velan M212-10-7 P3-1012-N-10 H Sep. 16, 1974 B2-2 2 1/2-CCA-SCK Velan M212-10-7 P3-1012-N-10 H Sep. 16, 1974 B96-2 2 1/2-CCA-CK Velan M212-33-3 , P3-1012-N-24 C Aug. 14, 1973 Piping Drawing No. 7749-M-233F ,

No Valves 801 310

Attachment 2 Part C VALVE CHECKLIST SYSTEM Piping Drawing No. Rev. No.

Valve Item No. (from Piping Drawing)

Valve Item No. (from Valve Tag)

Valve Drawing No. (Bachtel Foreign Print No.)

1. Do the two valve item numbers agree?

2. Does the valve location agree with the piping drawing?

3. Does the orientation of the valve and operator (if any) agree with the piping drawing?

If any deviation is found, indicate it on the piping drawing.

4. If for any reason this valve or any portion of it is inaccessible, indicate here and give the reason 5,hy.

INSPECTION TEAM NAME DATE NAME DATE 801 311

ATTACHMENT 2

- High Pressure Injection System Part D List of Pipe Anchors Anchor No. Drawing No. Rev No. Rev. Date Title

~

A040 07749-C-839 8 May 21, 1976 Emergency Core Cooling System A046 07749-C-841 3 Nov. 26, 1975 High Pressure Injection System t.047 07749-C-841 3 Nov. 26, 1975 High Pressure Injection System A048 07749-C-841 3 Nov. 26, 1975 High Preasure Injection System A049 07749-C-841 3 Nov. 26, 1975 High Pressure Injection System A050 07749-C-841 3 Nov. 26, 1975 High Pressure Injection System A051 07749-C-844 9 Oct. 17, 1977 High Pressure Injection System A052 07749-C-844 9 Oct. 17, 1977 High Pressure Injection System A053 07749-C-848 9 Nov. 18, 1975 digh Pressure Injection System A054 07749-C-848 9 Nov. 18, 1975 High Pressure Injection System A055 077'49-C-849 11 July 18, 1977 High Pressure Injection System A056 07749-C-842 4 Oct. 8, 1974 High Pressure Injection System A190 07749-C-842 4 Oct. 8, 1974 High Pressure Injection System A191 07749-C-842 4 Oct. 8, 1974 High Pressure Injection System A255 07749-C-885 5 Aug. 19, 1976 High Pressure Injection System A2S6 07749-C-885 5 Aug. 19, 1976 High Pressure Injection System A257 07749-C-885 5 Aug. 19, 1976 High Pressure Injection System A?58 07749-C-885 5 Aug. 19, 1976 High Pressure Injection System A392 07749-C-885 5 Aug. 19, 1976 High Pressure Injection System 0

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Attachment 2

- Part D PIPE ANCHOR CHECKLIST SYSTEM:

Piping Drawing No. Rev. No.

Anchor No.

Anchor Drawing No. Pev. No.

1. Does the anchor configuration agree with the design?

2. Do the sizes of the structural and load carrying memberc agree with the design? (including the wrapper plate, if any)

3. Are the welds per the design?

If no to any of the above questions, indicate any deviations below or on the d2 tail drawing.

4. If for any reason, this anchor or any portion of it is inaccessible, indicate here and give the reason why.

INSPECTION TEAM NArfE DATE NAME DATE

. Attachment 2 Part E PIPE SUPPORT CHECKIIST SYSTEM:

Piping Drawing No. Rev. No.

Pipe Support Park No.

1. Does the pipe support configuration agree w!th this design?

2. Does the type of support agree with the design?

(ie: snubber, spring, sway strut, rigid frame)

3. Answer the fallowing, if applicable.

a) Do the sizes of the structural and load carrying members agree with the design?

b) Are the welds per the design?

c) If there are any welded attachments to the pipe, are they per the design?

d) Are clearances (other than the 1/16" gap provided in the direction of support) in agreement with the design?

e) Is the size of the snubber / spring / sway strut according to the design?

f) Is the spring or snubber within its travel range? (non-Q snubbers only) g) Has the apring travel stop been removed?

If no to any of the above questions, indicate on the detail drawing any deviations.

4. If for any reason, this support or any portion of it is inaccessible, indicate here and give the reason why.

5. If the support does not look like the design, or if the design drawing is not available, or if the support has not been identified as inspection element, indicate here and explain. ,

INSPECTION TEAM NAME DATE NAME DATE 001 314