ML20050A956

Final Deficiency Rept Re Incorrect Settings of Pipe Support mini-springs Utilized in safety-related & balance-of-plant Sys,Initially Reported on 811113.Springs Reset & Purchase Specs Revised.Also Reported Per Part 21

ML20050A956
Person / Time
Site:	Grand Gulf
Issue date:	03/15/1982
From:	MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, AECM-82-98, NUDOCS 8204020441
Download: ML20050A956 (8)

Text

.. b MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi B ARRhMddE P. O. B O X 16 4 0, J A C K S O N , MISSISSIPPI 3 9 2'015 JAMES P McGAUGHY, JR March 15,1982 AssisTANY VICE PHf $1 DENT Of fice of Inspection & Enforcement

~h U. S. Nuclear Regulatory Commission Region Il p Q'K O '-

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101 Marietta Street, N.W. b. 'W , 3 h

Suite 3100 _' /]pg ,

Atlanta, Georgia 30303 y og .2 ,

jg k. ; j t., tz;q, .1 Attention: Mr. J. P. O'Reilly , Regional Administrator , If;[%g-4 '/

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Dear Mr. O'Reilly:

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SUBJECT:

Grand Gulf Nuclear Stat. inn Units 1 and 2 Docke t Nos. 50-416/417 File 0260/15525/15526 PRD-81/47, Final Report, Pipe Support Spring Settings AECM-82/98

Reference:

AECM-82/22 On November 13, 1981, Mississippi Power & Light Company notified Mr. P. A.

Taylor, of your of fice, of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station (GGNS) construction site. The deficiency concerns minimum and maximum settings on MS-3201 and MS-3401 springs. The actual travel range of the springs dif fers f rom that shown in the Bergen-Patterson catalog.

We have completed our investigation of this matter and have determined that this deficiency is reportable under the provisions of 10CFR50.55(e) and 10CFR21 for MP&L. Mr. R. Butcher was notified by telephone on March 5,1982, that the 10CFR21 reporting requirements applied ta this deficiency. He agreed that the reporting time frame for the 50.55(e) report would also apply to the 10CFR21 report.

The deficiency is also reportable under 10CFR21 for Bechtel Power Corporation. Mr. F. Cant; ell was notified of this Part 21 applicability to Bechtel on January 21, 1982. He stated that the inclusior of Bechtel's report with MP&L's report would be acceptable.

All details concerning this deficiency are included in MP&L's Final Report, Attachment A, or Bechtel's Final Report, Attachment B.

Yours trul , l J. P. McGaughy, Jr. I KDS:dr [I[EIAL (l()py ATTACIMENT cc: See page 2 ) b

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8204020441 820315 )er Middle South Utilities System e 14 PDR ADOCM 05000416 j /

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1 Mr. J. P. O'Reilly AECM-82/98 NRC Page 2 cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Association P. O. Box 1589 llattiesburg, MS 39401

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Attachment A to AECM-82/98 i Page 1 of 3 l FINAL REPORT FOR PRD-81/47

1. Name and address of the individual .. . informing the commission:

J. P. McGaughy, Jr.

Assistant Vice-President, Nuclear Production P.O. Box 1640 Jackson, Mississippi 39205 Notification of Part 21 applicability made to Mr. R. Butcher, NRC, Region II by telephone on March 5,1982. This deficiency was also reported under 10CFR21 by Bechtel Power Corporation to Mr. F. Cantrell by telephone on Janua ry 21, 1982.

2. Identification of the f acility . . . which . . . contains a deficiency:

Grand Gulf Nuclear Station (GGNS) Units 1 and 2 Port Gibson, Mississippi 39150

3. Identification of the firm .. . supplying the basic component which ...

contains a deficiency:

The basic component, type MS-3201 and MS-3401 springs did not in themselves contain a defect. The purchase documents for the springs did not specify load indicating markers on the spring canisters. These are not provided by the vendor unless specifically requested by the purchaser. The purchase documents were written and the springs were installed by Bechtel Power Corporation, Caithersburg, Maryland.

4. Nature of the deficiency . .. and the safety hazard which . . . could be created  !

by such a deficiency ...:

A. Description of the Deficiency  ;

Type MS-3201 and MS-3401 mini-springs for the supports utilized in safety related and balance of plant systems were incorrectly set. The spring >

canisters for the mini-springs are not marked with " bench" markers indicating minimum or maximum loads. When the springs were installed, the assumption was made that the top most position of the spring coil reflected the minimum load setting. This resulted in a difference between the actual travel range of the spring and the travel range speci-fled in the vendor's catalog and load capacity data sheets.

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Attachment A to AECM-82/98

?> age 2 of 3 B. Analysis of Safety Implications Since the spring hangers did not have the minimum load properly estab-lished, the reaction of any particular spring hanger would differ from the design reaction. The hanger could then either be overstressed or not provide the required support to the pipe.

The installed condition of all MS-3201 and MS-3401 springs utilized in safety-related piping systems has been evaluated and it has been deter-mined that several springs would be overstressed in the upset position had they remained incorrectly set. This condition could have prevented safety-related pipe supports f rom performing their intended safety func-tions.

5. The date on which the information of such deficiency ... was obtained.

Mississippi Power and Light received information of the defect on November 13, 1981. We reported the deficiency to Mr. P. A. Taylor, of your of fice, as

a Potentially Reportable Deficiency on that date. Since that date MP&L has t

filed two (2) interin reports to inform the Commission of the progress and status of the evaluation of this deficiency. An evaluation for Part 21 has

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been completed.

i 6. In the case of the basic component ... the number and location of all such components.

J The springs are located at Grand Gulf Nuclear Station, Units 1 and 2.

l' We do not have knowledge of the location of equipment located other than at GGNS.

7. The corrective action which has been taken ... the name of the individual ...

reponsible for the action; and the length of time that has been ... taken to complete the action.

A. Corrective Actions Taken j All Unit I springs have been properly reset. Procedures have been revised to be used by jobsite personnel for the proper setting of Unit 2

! springs which do not have load indicating markers on the canisters.

To preclude recurrence our Architect-Engineer has revised their purchase I

specifications to include a requirement that all bulk ordered variable i springs have the minimum and maximum load positions indicated on the 4

outside of each spring canister.

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Attachment A to AECM-82/98 Page 3 of 3 B. Responsible Individual G. B. Rogers, Jr.

Site Manager Mississippi Power and Light Company C. Length of Time to Complete Actions MP&L first received notification of the deficiency on November 13, 1981.

An evaluation for reportability under 10CFR21 was completed on March 4, 1982.

All corrective actions by Bechtel Power Corporation and MP&L were completed by March 3,1982.

8. Any advice related to the deficiency ... that has been, is being, or will be given to purchasers or licensees:

As the deficiency did not originate with MP&L, we have no advice to of fer.

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(. Attachment B to AECM-82/98 Page 1 of 3 ATTACHMENT "A" TO PRD 81/47 PIPE SUPPORT SPRING SETTINGS BECllTEL's 10 CFR 21 REPORT

1. Name and address of the individual . . . informing the Commission:

J. R. Valdez Quality Assurance Supervisor Bechtel Power Corporation Port Gibson, Mississippi 39150

.T. E. Reaves, Jr.

Manager of Quality Assurance Mississippi Power & Light Company City Center North 210 South Lamar Street Suite 320 Jackson, Mississippi 39201 Per telephone call on January 21, 1982, with Mr. F. Cantrell, Region II, it was confirmed that the 10 CFR 50.55(e) time requirements for the written report could be applied and, as such, MP61 was requested to -

include this report with their 50.55(e) report.

2. Identification of the facility . . . which contains a defect:

Grand Gulf Nuclear Station (GGNS)

Unit I and Unit II Port Gibson, Mississippi 39150

3. Identification of the firm constructing the facility . . . contains a defect:

Installed at the Grand Gulf Project by:

Bechtel Power Corporation 15740 Shady Grove Road Gaithersburg, MD 20877

4. Nature of the defect and the safety hazard which could be created by such a defect:

A. The bulk ordered type MS-3201 and MS-3401 mini-springs on the

• supports utilized in safety-related piping systems did not have the minimum and maximum load settings marked on the spring cannister. Load indicating markers are not provided by the Supplier, Bergen-Paterson, unless specifically requested by a

Attachment B to AECM-82/98

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4. A. (continued)

I the purchaser. Bechtel did not include this requirement in their procurement document. Without load indicating markers, jobsite personnel assumed that the top most position of the spring coil reflected the minimum load setting. This resulted in a difference between the actual travel range of the spring and the travel range specified in the Bergen-Paterson catalog and load capacity data sheets.

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! B. Project Engineering has evaluated the installed condition of i

all MS-3201 and MS-3401 springs utilized in safety-related piping

, systems and has determined that several springs would be i

overstressed in the upset position had they remained incorrectly

set. This condition could have prevented safety related pipe i

supports from performing their safety functions, thus creating .

a substantial safety hazard.

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5. The date on which the information of such a defect was obtained:

An evaluation of the applicability under the provisions of 10 CFR 21 was made on January 21, 1982, by Bechtel Power Corporation.

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6. In the case of a basic component . . . the number and location of all such components.

Information concerning this defect is being furnished to the other ,

1 Bechtel Power Corporation divisions. Should it be determined that basic components which contain this defect are in use at, have been j _

supplied for, or are being supplied for one or more other Bechtel j

proj ec ts, this will be reported by the cognizant division direct'ly

to the cognizant director (s) of the NRC Regional Office of Inspection j and Enforcement.

7. The corrective action which has been taken . . . the name of the organization responsible for the action, and the length of time that has been . . . or will be taken to complete the action.

A. Bergen-Paterson has provided procedures to be used by jobsite personnel to properly field set the installed MS-3201 and MS-3401 springs. Project Engineering's disposition of NCR 6227 describes an alternate method to be used by jobsite personnel for proper cold and hot spring setting. ,

B. The f o* Laing actions have been taken to preclude recurrence

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1. Specification 9645-M-300.0 has been revised to include

a requirement for all bulk ordered variable springs to have the minimum and maximum load positions indicated on the outside of each spring cannister.

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Attachment B to AECM-82/98

( Page 3 of 3

7. B. (continued) -

2. MS-16 (Mechanical Standard) has been revised to include procedures to be used by jobsite personnel to properly set those variable springs to be installed in Unit II which do not have load indicating markers on the canisters.

C. The MS-3201 and MS-3401 springs under the control of Bechtel have been properly set. The remaining springs are under the control of MP&L. Corrective actions have been supplied to Mississippi Power & Light Company for proper setting of springs.

8. Any advice related to the defect that has been, is being, or will be

, given to purchasers or licensees.

Corrective actions have been supplied to Mississippi Power & Light Company for proper setting of springs.

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