ML20112F613
| ML20112F613 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/13/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-304, REF-PT21-84, REF-PT21-85-016-000 184, PT21-85-016-000, PT21-85-16, NUDOCS 8501150441 | |
| Download: ML20112F613 (4) | |
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, a Carolina Power & Light Company summmmmmmmmmmmua Si &Eso(7 l', ke:w a,it, NC 27562 10 December 13,1984 Mr.~ 3ames P. O'Reilly NRC-304 United States Nuclear Regulatory Commission Region II
?l01 Marietta Street,- Northwest (Suite 2900)
Atlanta, GA 30323 M+
CAROLINA POWER & LIGHT COMPANY
' SHEARON HARRIS NUCLEAR POWER PLANT g
1986 - 900,000 KW -' UNIT 1 6,000 LB. REDUCERS - INCORRECT MATERIAL, ITEM 184
Dear Mr. O'Reilly:
- Attached is our final report on the subject item, which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21 on September 10, 1984.- With this report,
- Carolina Power & Light Company considers this matter closed.
If you have any questions regarding this matter, please do not hesitate to contact me.
Yours very truly, f= : : =*
R. M. Parsons Project General Manager Completion Assurance Shearon Harris Nuclear Power Plant '
RMP/ sal Attachment.-
. cc:
Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
'Mr. R. C. De oung (NRC) v l
8501150441 041213 PDR ADOCK 05000400
.S PDR se2/1 '
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CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT l' FINAL' REPORT 6000 LB. REDUCERS - INCORRECT MATERIAL
' ITEM 184 DECEMBER 14, 1984 REPORTABLE UNDER' 10CFR50.55(e) AND 10CFR21 b
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SUBJECT:
'Shearon Harris Nuclear Power Plant, Unit #1.
- 4 10CFR50.55(e) and 10CFR21 reportable item. ANSI rating stamping and thickness deficiencies in four ASME Class 1 flow restrictors.
ITEM:
Nonconformance Report 84-1588. Four ASME Class 1, SA182 F 304 S.S. material, 2" x 3/4" socket weld type fittings purchased as ANSI 6000 lb. rated construction and marked so on the outside surface.
These fittings were found to be made to ANSI 3000 lb.
rated construction.
SUPPLIED BY:
Southwest Fabricating & Welding ~ Company, Houston, Texas through their material supplier, WFI International, Houston, Texas.
NATURE OF DEFICIENCY:
In: July 1984, construction engineering personnel at.
Shearon Harris site reported a lack of proper socket wall thickness:on the 2" side of the subject flow restrictors when compared to the ANSI 6000 lb.
-fitting's dimension chart and matched the thickness-
.of'a 3000 lb. 2" socket fitting's wall.
The' product.
had'a "6M" marking vibroetched on the outside surface
.s of each: fitting, indicating a manufacturer's 6000 lb',
. +-
-designation of-the' product.. These fittings-passed I
all quality < control checks.
.-c DATE PROBLEM OCCURRED:
. Refer ' to the above section. -
1DATE PROBLEM REIORTED:
On August 13, 1984, CP&L (Mr. N.J. Chiangi) notified
- the 'NRC.(Mr. iA.' Hardin) of a ' potentially reportable
~
. item 'per the provisions of 10CFR50.55(e) and 10CFR, -
=
'Part 21.~ The NRC was ' informed -that four 6000 :lb.
reducers supplied.by the Southwest Fabricating-
~
- ~
' Company were determined by the' field to be 3000 lb.
reducers.
~
On September;10, 1984', CP&Li(Mr. K.V.' Hate') notified.
the NRC:(Mr. H. Krug) that the August. 13, 1984 potentially reportable' item concerning the above_.
items.had been evaluated and found'to be reportable
.per;.thel provisions of 10CFR50.55(e) 'and 10CFR, Part e
- 21.
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SCOPE OF PROBLEM:
The deficiency involves supply of a defective and incorrectly rated basic component necessary to assure the integrity of the reactor coolant pressure boundary.
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- - SAFETY '
. IMPLICATION:
These fittings are mounted in an RTD header, where three RTD scoop lines coming off the reactor coolant piping hot leg merge together as 4 flow resistor
' element, and its failure would: constitute-a small break LOCA.
REASON:
- DEFICIENCY IS RFPORTABLE: A small break LOCA would impede the safe shutdown of the plant.
CORRECTIVE
-ACTION:
The. fittings were shipped back to Southwest Fabricating Company. New replacement fittings were made, inspected, and received at the SHNPP site in September 1984.
' PREVENTIVE-MEASURE:
Southwest Fabricating-& Welding Co.'in their response ur
, dated October 19, 1984 has stated.that their
-receiving inspection procedure permits acceptance
= based on' statistical analysis, with a minimum of 10%
inspection of'each purchase order' item received.
On
?
- this specific order required dimensions were verified.
except the wall' thickness'at the'2"Jsocke't weld end, which was 0.335".
This should have'been a minimum of'
- 0.374", thus a deviation of 0.039"' existed. -To prevent recurrence, SFW Co.'s Receiving Inspectors have been instructed to verify compliance with requirements 'of 'each purchase order item received.
- Ebasco Services Inc.:
Ebasco's VQA representative
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reviewed vendor-supplied documentation relative:to~
dimensional conformance and visually inspected these couplings for damage. To prevent recurrence, Ebasco VQA representatives have been instructed to perform increased dimensional inspection of"small quantity-E
- samples of' future piping inspections.-
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