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{{#Wiki_filter:SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.1 LAMINATION IN NAINTZENANCE RAIL SUPPORT PLATES Final Report February 19, 1980 Reportable Under 10CFR50.55(e)
{{#Wiki_filter:SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO. 1 LAMINATION IN NAINTZENANCE RAIL SUPPORT PLATES Final Report February 19, 1980 Reportable Under 10CFR50.55(e)
Prepared by: Carolina Power 6 Light Company  
Prepared by:   Carolina Power 6 Light Company


==SUBJECT:==
==SUBJECT:==
10CFR50.55(e)
10CFR50.55(e) Reportable Item Shearon Harris Nuclear Power Plant (SHNPP)
Reportable Item Shearon Harris Nuclear Power Plant (SHNPP)Lamination in Maintenance Rail Support Plates ITEMS: Plates Used for Maintenance Rail Support SUPPLIED BY: Graver Northeast 4809 Tod Avenue E.Chicago, Indiana 46312 NATURE OF DEFECT: During the welding of the support plates, a large lamination in one plate was noticed.A closer inspection of plates previously welded showed smaller laminations.
Lamination in Maintenance Rail Support Plates ITEMS:     Plates Used for Maintenance Rail Support SUPPLIED BY:     Graver Northeast 4809 Tod Avenue E. Chicago, Indiana     46312 NATURE OF DEFECT:     During the welding of the support plates, a large lamination in one plate was noticed. A closer inspection of plates previously welded showed smaller laminations.
DATE PROBLEM WAS CONFIRMED TO EXIST: January 17, 1980 PROBLEM REPORTED: January 17, 1980-CP&L (L.E.Jones and A.M.Lucas)informed the NRC Region II office (Mr.R.Bradley)by telephone that the problem was"potentially reportable" under 10CFR50.55(e) and 10CFR21.February 14, 1980-CP&L (N.J.Chiangi)informed the NRC Region II office (Mr.M.Hunt)by telephone that the problem was reportable under 10CFR50.55(e) requirements.
DATE PROBLEM WAS CONFIRMED TO EXIST:           January 17, 1980 PROBLEM REPORTED:     January 17, 1980 CP&L (L. E. Jones and A. M. Lucas) informed the NRC Region     II office (Mr. R. Bradley) by telephone   that the problem was "potentially reportable" under 10CFR50.55(e) and 10CFR21.
N SCOPE OF PROBL&i: One plate from Graver C-27 heat no.802J06219 was used to fabricate the maintenance rail support plates.While welding one plate, a large lamination occurred.SAFETY LMLICATIONS:
February 14, 1980 - CP&L (N. J. Chiangi) informed the NRC Region   II office (Mr. M. Hunt) by telephone that the problem was reportable under 10CFR50.55(e) requirements.                               N SCOPE OF PROBL&i:   One plate from Graver C-27 heat no. 802J06219 was used to   fabricate the maintenance rail support plates.
The maintenance rail is supported from the dome.If the rail were to fall, there would be a good chance that it would damage a piece or pieces of safety related equipment.
While welding one plate, a large lamination occurred.
REASON(S)PROBLEM WAS REPORTABLE:
SAFETY LMLICATIONS: The       maintenance   rail is   supported from the dome.
A support plate having laminations does not meet its intended design.This condition is addressed in 10CFR50.55(e) and is a condition which"...were it to have remain uncorrected, could have affected adversely the safety of operations...and which represents: (iii)a significant deficiency in construction...
If the rail were     to fall, there would be a good chance that   it would damage a piece or pieces of safety related equipment.
which will require extensive evaluation...
REASON(S) PROBLEM WAS REPORTABLE:       A support plate having laminations does not meet   its intended design. This condition is addressed in 10CFR50.55(e) and is a condition which "...were   it to have remain uncorrected, could have affected adversely the safety of operations...and which represents:       (iii)   a significant deficiency in construction... which will require extensive evaluation... or extensive repair to meet the criteria and bases stated in the Safety Analysis Report or construction permit..." (Quotation from 10CFR50.55(e).
or extensive repair to meet the criteria and bases stated in the Safety Analysis Report or construction permit..." (Quotation from 10CFR50.55(e).
 
CORRECTIVE ACTIONS: All support plates that had previously been welded in place were removed.These plates, along with the remaining portion of plate and remaining fabricated plates (from heat no.802J06219), were removed from the site.A new plate, also'supplied by Graver was ultrasonically tested (to ensure no laminations existed)and subsequently used to fabricate the support plates.This problem was identified by the site gA on DDR-345.The material furnished by Graver has a serial number-heat no.(C-27-802J06219/J7066).
CORRECTIVE ACTIONS: All support plates that   had previously been welded in place were removed. These plates, along with the remaining portion of plate and remaining fabricated plates (from heat no. 802J06219), were removed from the site.
It is shown on CB6I drawing, CB61 22, revision 4.}}
A new plate, also 'supplied by Graver was ultrasonically tested (to ensure no laminations existed) and subsequently used to fabricate the support plates.
This problem was identified   by the site gA on DDR-345.
The material furnished by Graver has   a serial number-heat no. (C-27-802J06219/J7066). It is shown on CB6I drawing, CB61 22, revision 4.}}

Latest revision as of 04:12, 22 October 2019

Final Deficiency Rept Re Lamination in Maint Rail Support Plates.All Support Plates Removed & Replaced W/Ultrasonically Tested Plates
ML18017A832
Person / Time
Site: Harris  Duke Energy icon.png
Issue date: 02/19/1980
From:
CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18017A831 List:
References
NUDOCS 8002260666
Download: ML18017A832 (4)
v • d • e


Text

SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO. 1 LAMINATION IN NAINTZENANCE RAIL SUPPORT PLATES Final Report February 19, 1980 Reportable Under 10CFR50.55(e)

Prepared by: Carolina Power 6 Light Company

SUBJECT:

10CFR50.55(e) Reportable Item Shearon Harris Nuclear Power Plant (SHNPP)

Lamination in Maintenance Rail Support Plates ITEMS: Plates Used for Maintenance Rail Support SUPPLIED BY: Graver Northeast 4809 Tod Avenue E. Chicago, Indiana 46312 NATURE OF DEFECT: During the welding of the support plates, a large lamination in one plate was noticed. A closer inspection of plates previously welded showed smaller laminations.

DATE PROBLEM WAS CONFIRMED TO EXIST: January 17, 1980 PROBLEM REPORTED: January 17, 1980 CP&L (L. E. Jones and A. M. Lucas) informed the NRC Region II office (Mr. R. Bradley) by telephone that the problem was "potentially reportable" under 10CFR50.55(e) and 10CFR21.

February 14, 1980 - CP&L (N. J. Chiangi) informed the NRC Region II office (Mr. M. Hunt) by telephone that the problem was reportable under 10CFR50.55(e) requirements. N SCOPE OF PROBL&i: One plate from Graver C-27 heat no. 802J06219 was used to fabricate the maintenance rail support plates.

While welding one plate, a large lamination occurred.

SAFETY LMLICATIONS: The maintenance rail is supported from the dome.

If the rail were to fall, there would be a good chance that it would damage a piece or pieces of safety related equipment.

REASON(S) PROBLEM WAS REPORTABLE: A support plate having laminations does not meet its intended design. This condition is addressed in 10CFR50.55(e) and is a condition which "...were it to have remain uncorrected, could have affected adversely the safety of operations...and which represents: (iii) a significant deficiency in construction... which will require extensive evaluation... or extensive repair to meet the criteria and bases stated in the Safety Analysis Report or construction permit..." (Quotation from 10CFR50.55(e).

CORRECTIVE ACTIONS: All support plates that had previously been welded in place were removed. These plates, along with the remaining portion of plate and remaining fabricated plates (from heat no. 802J06219), were removed from the site.

A new plate, also 'supplied by Graver was ultrasonically tested (to ensure no laminations existed) and subsequently used to fabricate the support plates.

This problem was identified by the site gA on DDR-345.

The material furnished by Graver has a serial number-heat no. (C-27-802J06219/J7066). It is shown on CB6I drawing, CB61 22, revision 4.

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