ML19208A608: Difference between revisions

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| number = ML19208A608
| number = ML19208A608
| issue date = 08/15/1979
| issue date = 08/15/1979
| title = Responds to NRC 790712 Ltr Re Violations Noted in IE Insp Rept 50-322/79-04.Corrective Actions:Remaining End Cap Metal & Weld Metal Removed by Grinding & Magnetic Particle Inspected
| title = Responds to NRC Re Violations Noted in IE Insp Rept 50-322/79-04.Corrective Actions:Remaining End Cap Metal & Weld Metal Removed by Grinding & Magnetic Particle Inspected
| author name = Wofford A
| author name = Wofford A
| author affiliation = LONG ISLAND LIGHTING CO.
| author affiliation = LONG ISLAND LIGHTING CO.
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| contact person =  
| contact person =  
| document report number = SNRC-421, NUDOCS 7909170072
| document report number = SNRC-421, NUDOCS 7909170072
| title reference date = 07-12-1979
| package number = ML19208A607
| package number = ML19208A607
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
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=Text=
=Text=
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w[E_E,C,O,               LONG ISLAND LIGHTING COM PANY 175 EAST OLD COUNTRY ROAD + H l C K S V I L L E, NEW YORK 11801 viCE PRESIDENT SNRC-421 August 15, 1979 Mr. Robert T. Carlson, Chief Reactor Construction & Engineering Support Branch U. S. Nuclear Regulatory Commission, Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 NRC Inspection No. 79-04 Shoreham Nuclear Pcwer Station - Unit No. 1 Docket No. 50-322
w[E_E,C,O, LONG ISLAND LIGHTING COM PANY 175 EAST OLD COUNTRY ROAD + H l C K S V I L L E, NEW YORK 11801 SNRC-421 viCE PRESIDENT August 15, 1979 Mr. Robert T.
Carlson, Chief Reactor Construction & Engineering Support Branch U.
S. Nuclear Regulatory Commission, Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 NRC Inspection No. 79-04 Shoreham Nuclear Pcwer Station - Unit No. 1 Docket No. 50-322


==Dear Mr. Carlson:==
==Dear Mr. Carlson:==
This letter responds to your letter of July 12, 1979, which forwarded the report of the inspection of activities authori7cd by NRC License No. CPPR-95, conducted by Mr. Toth of your office on March 27-30 and April 2-4, 1979.
The letter stated that it appeared that one of our activities was not conducted in full compliance with NRC requirements.
The apparent noncompliance and our response follow:
1.
Apparent Noncompliance with 10CFR50, Appendix B Criterion IX, and FSAR, Paragraph 17.1.9A Contrary to the above, in October 1976, the mechanical contractor, under the direction of Stone and Webster, performed thermal cutting of attachment welds to remove pressure caps from nozzles N3 and N4 of residual heat removal heat exchangers No. 034A and No. 034B, without qualified and approved procedures and apparently without performing preheat required by the applicable specifications.
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This letter responds to your letter of July 12, 1979, which forwarded the report of the inspection of activities authori7cd by NRC License No. CPPR-95, conducted by Mr. Toth of your office on March 27-30 and April 2-4, 1979. The letter stated that it appeared that one of our activities was not conducted in full compliance with NRC requirements. The apparent noncompliance and our response follow:
tONOIBL ND l lGHT1NG COMPANY fir. Robert T.
: 1. Apparent Noncompliance with 10CFR50, Appendix B Criterion IX, and FSAR, Paragraph 17.1.9A Contrary to the above, in October 1976, the mechanical contractor, under the direction of Stone and Webster, performed thermal cutting of attachment welds to remove pressure caps from nozzles N3 and N4 of residual heat removal heat exchangers No. 034A and No. 034B, without qualified and approved procedures and apparently without performing preheat required by the applicable specifications.
Carlson August 15, 1979 General Comment ASME III, Section VIII, Appendix R, does require 175F preheat for material in the P-1 Group which has both a specified maximum carbon content in excess of 0.30 percent and a thickness at the joint in excess of one inch but it requires only 50F pre-heat for other materials in the P-1 Group.
700017007c}                        a r c.,. Q..Ln; ql3
?iaterial certifications for the nozzles in question state that the actual carbon content of the nozzles is less than 0.30 percent in all cases.
 
The end caps were removed indoors in an unheated building during a period when the ambient exterior temperature was generally higher than 50F while the work was being performed.
tONOIBL ND l lGHT1NG COMPANY fir . Robert T. Carlson                           August 15, 1979 General Comment ASME III, Section VIII, Appendix R, does require 175F preheat for material in the P-1 Group which has both a specified maximum carbon content in excess of 0.30 percent and a thickness at the joint in excess of one inch but it requires only 50F pre-heat for other materials in the P-1 Group. ?iaterial certifications for the nozzles in question state that the actual carbon content of the nozzles is less than 0.30 percent in all cases. The end caps were removed indoors in an unheated building during a period when the ambient exterior temperature was generally higher than 50F while the work was being performed.       Therefore, little or no preheat would have been necessary to meet the 50F requirement to prevent harm to the base metal of the nozzles.       Nevertheless the following corrective and preventive actions have been accomplished.
Therefore, little or no preheat would have been necessary to meet the 50F requirement to prevent harm to the base metal of the nozzles.
Corrective Action and Results All remaining end cap metal and weld metal has been removed by grinding. The ground areas were magnetic particle inspected and all rejectable defects removed by grinding and blending into the surrounding surfaces using care not to violate minimum wall requirements.     The ground and blended areas were again magnetic particle inspected and found acceptable.
Nevertheless the following corrective and preventive actions have been accomplished.
Steps T;3en to Prevent Recurrence Welding Procedures W 100B and W 200B, in effect at the construction site, contain the necessary guidance for use in thermal cutting. Also, an investigation by Field Quality Control has revealed that no additional ASME III nozzles have welded temporary pressure caps.
Corrective Action and Results All remaining end cap metal and weld metal has been removed by grinding.
The ground areas were magnetic particle inspected and all rejectable defects removed by grinding and blending into the surrounding surfaces using care not to violate minimum wall requirements.
The ground and blended areas were again magnetic particle inspected and found acceptable.
Steps T;3en to Prevent Recurrence Welding Procedures W 100B and W 200B, in effect at the construction site, contain the necessary guidance for use in thermal cutting.
Also, an investigation by Field Quality Control has revealed that no additional ASME III nozzles have welded temporary pressure caps.
Date Full Compliance Will Be Achiaved Full compliance has been achieved.
Date Full Compliance Will Be Achiaved Full compliance has been achieved.
Very truly yours, A7 q g   (~ /     (, j '
Very truly yours, A7 q g
A. W. Wofford Vice President e   i rr)uJ.
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A. W. Wofford Vice President e
i rr)uJ..L.~q't es s 2}}

Latest revision as of 23:55, 4 January 2025

Responds to NRC Re Violations Noted in IE Insp Rept 50-322/79-04.Corrective Actions:Remaining End Cap Metal & Weld Metal Removed by Grinding & Magnetic Particle Inspected
ML19208A608
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 08/15/1979
From: Wofford A
LONG ISLAND LIGHTING CO.
To: Robert Carlson
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19208A607 List:
References
SNRC-421, NUDOCS 7909170072
Download: ML19208A608 (2)
v • d • e


Text

.

w[E_E,C,O, LONG ISLAND LIGHTING COM PANY 175 EAST OLD COUNTRY ROAD + H l C K S V I L L E, NEW YORK 11801 SNRC-421 viCE PRESIDENT August 15, 1979 Mr. Robert T.

Carlson, Chief Reactor Construction & Engineering Support Branch U.

S. Nuclear Regulatory Commission, Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 NRC Inspection No. 79-04 Shoreham Nuclear Pcwer Station - Unit No. 1 Docket No. 50-322

Dear Mr. Carlson:

This letter responds to your letter of July 12, 1979, which forwarded the report of the inspection of activities authori7cd by NRC License No. CPPR-95, conducted by Mr. Toth of your office on March 27-30 and April 2-4, 1979.

The letter stated that it appeared that one of our activities was not conducted in full compliance with NRC requirements.

The apparent noncompliance and our response follow:

1.

Apparent Noncompliance with 10CFR50, Appendix B Criterion IX, and FSAR, Paragraph 17.1.9A Contrary to the above, in October 1976, the mechanical contractor, under the direction of Stone and Webster, performed thermal cutting of attachment welds to remove pressure caps from nozzles N3 and N4 of residual heat removal heat exchangers No. 034A and No. 034B, without qualified and approved procedures and apparently without performing preheat required by the applicable specifications.

700017007c}

c.,. Q..Ln; ql3 a r

tONOIBL ND l lGHT1NG COMPANY fir. Robert T.

Carlson August 15, 1979 General Comment ASME III,Section VIII, Appendix R, does require 175F preheat for material in the P-1 Group which has both a specified maximum carbon content in excess of 0.30 percent and a thickness at the joint in excess of one inch but it requires only 50F pre-heat for other materials in the P-1 Group.

?iaterial certifications for the nozzles in question state that the actual carbon content of the nozzles is less than 0.30 percent in all cases.

The end caps were removed indoors in an unheated building during a period when the ambient exterior temperature was generally higher than 50F while the work was being performed.

Therefore, little or no preheat would have been necessary to meet the 50F requirement to prevent harm to the base metal of the nozzles.

Nevertheless the following corrective and preventive actions have been accomplished.

Corrective Action and Results All remaining end cap metal and weld metal has been removed by grinding.

The ground areas were magnetic particle inspected and all rejectable defects removed by grinding and blending into the surrounding surfaces using care not to violate minimum wall requirements.

The ground and blended areas were again magnetic particle inspected and found acceptable.

Steps T;3en to Prevent Recurrence Welding Procedures W 100B and W 200B, in effect at the construction site, contain the necessary guidance for use in thermal cutting.

Also, an investigation by Field Quality Control has revealed that no additional ASME III nozzles have welded temporary pressure caps.

Date Full Compliance Will Be Achiaved Full compliance has been achieved.

Very truly yours, A7 q g

(~

/

(,

j '

A. W. Wofford Vice President e

i rr)uJ..L.~q't es s 2

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