ML19326D429
| ML19326D429 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Midland  |
| Issue date: | 03/23/1973 |
| From: | Thorkelson M US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Bacon J CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8006110450 | |
| Download: ML19326D429 (6) | |
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UNITED STATES j%
ATOMIC ENERGY COMMISSION
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WASHINGTON. O.C. 20545 Maren 23, 1973 ff ?
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THIS DOCUMENT CONTAINS Judd L. Bacon, Esq.
P00R QUAUTY PAGES Consumers Power Company 212 W. Michigan Avenue Jackson, Michigan 49201
Dear Mr. Bacon:
Enclosed herein is a copy of 5 pages from a compliance report for Browns Ferry which contains material on the Midland plant. We re-quest that your company and Babcock & Wilcox review this for pro-prietary material. If any material is believed to be proprietary, we request that you make the claim following to the extent possible the procedures set forth in the Commission Memorandum dated June 6, 1972 in the ECCS proceeding (Docket No. RM-50-1).
We request that you review this material as quickly as possible.
Sincerely, j) h.
]&)C U S5N Mary X Thorkelson Attorney, Office of General Counsel
Enclosure:
As Stated cc:
(w/o enclosure)
Harold Reis 4
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SECTION III Prepared By:
- 3. T. Resnick, RO:RCE:HQ
- Additional-Subiects Insuccted. Not Identified in Secticn I. Where No Deficiencies or Unresolved Itecs Were Fcund 1.
_d_eneral -
As part of the routine vendor inspection, an inspection was =ade of selected documents covering =aterial certifications, =ater-ial receipt inspections, cperation processes, welding qualifica-tions, procedurcs, and centrols for the Midland 1 and 2 pressurizers, E5W contract nu=bers 620-0012-59-10 and 620-0013-59-10, respectively.
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2.
Status of the Two Pressuricers The inspector was advised that the two pressurizers are partially co=pleted to about the same degree of completion. The shcIl cour-ses including the heater belts are velded into a single asse=bly.
I The top heads are partially completed with the =anway ring, ~ spray nozzle, pressurizer relief nozzle, vent nozzle and lif ting lugs
' welded-into the head.
The inspector noted that no =anufacturing work was being perfor=ed on the pressuri:cr and.that the shc11 courses and top heads were in storage. The shell courses are stored outside the =anufacturing
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building. The inspector was advised that the shells are protected from the ele = cats by a coating of Tectyl on the =etallic surfaces and are further shrouded with several layers of protective plastic and the sec=s taped.
The heads are. stored inside the manufacturing building without any protective coatings.
ESW inspections of the stored assemblies are required to be conducted in accordance uith procedure 12-2QT-106 Revision 0.
However, in-spection of the records indicated that a deviation notice had been issued spccifying inspection every 90. days. The inspector was advised that the assc=blies are being inspected every 30 days but only the 2,. :....;
s.90-day ^ inspection was docunented.- 35'4 advised the inspector.that :a....x.
. e u le.tter will be sent to shop inspectors specifically requir.cing 'docu-M ntation of the 30-day inspection findings.
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Reccrds' Reviewed a.
Material Certifications An examination of the following certified caterial test reports established that they were in accordance with applicable ASME/ ASTM specifications, code cases, and B&W Specification for Pressurizer, Contract No. 620-0012, 13 for Consumers Fower Co=pany, approved by E. E. Cardwell, Jr., dated January 21, 1971:
(1) Upper Heater Belt Forging, Specification ASTM A-508 Class 1, codified by code case 1332-4, and ASME Code Section III, Article 3 codified.* Ecthlehen Steci Report No. 438, dated March 24, 1970.
(2) Lower Heater Belt Forging, Specification ASTM A-508 Class 1, modified by code case 1332-4, and ASME Code Section III,
-. Article 3 modified.* Ecchlehc2 Steel Report No. 473, dated
. April 2, 1970.
.:. (3)' Manway Forging. ASTM A-50S Class 1, as nodified by code case 1332-4, as modified by custccers purchase order.*
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Donncy Forge and Foundry SO No. 0592-0 dated December 30,
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~ The caterial certifications were signed and dated by responsible perconnel of the supplier and ESW.
The transition temperature curves, attached to Lethlehen Steel Report No. 438 were identified as Lever Heater Eelt Forging, although the caterial markings for the naterial furnished under report No. 438 identified the mater-ial as Unoer Heater Eelt Forging.
25W contacted the supplier and determined that this was a typographical c: ror, E&W will obtain a revised report with proper identification. *
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.- b. -Claddine Thickness
...-e:ee,,; 52. e.. A. reyte.f:og, thy golicuing; records pertaining ' to -eladding' thick-
'e ne.ss.of the upper head indicated t'nat the un.cer head th.ickness uns.in confo'rnanca with EiW Standard Ecuipment Sepcification for
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Pressucizer Vessel, Specification No. CS-3-32/0570, dated May 15, 1970:
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O EB&W S-102Y dated Septe=ber 1, 1970, on quality control specification. for UT inspection for defects and/or bond or cladding.
35W acceptance ticket No. 033659 indicated that the cladding thickness was verified and accepted.
These-docu=ents wcre signed and dated by responsible B&W-personnel.
c._ Ualdinf of Nozzles and Manvav Into Unacr Head An *cxamination' was made of records for =anufacturing processes including operation sequences No. 235 and No. 240, and applicable velding procedures, WP-33 Alt 1 Revision 2, dated February 25, 1970,.the Record of Procedure and Qualification Test - QC 2E4-122 dated February 5, 1970, and Weld Control Record - S/N A 019141.
Fro this exa=ination it was established that the upper head forging, originally purchased for use in B&W contract 620-009f and carrying that identification number, is being used in the contract nu=ber-620-012 pressuriser.
d.
Transherof'IdentificationMarks Jhs inspection of shop process sheets and-sketches indicated that identification tarks were satisfactorily places on each
.... segment of the upper and lower forgings ucre welded and seg-manted.
c.
Deviation Notices Deviation notices, signed and dated by responsible personnel, indicated acceptance of (1) a reduced welding gap between the manway and head; and (2) a reduced welding gap between the
' lifting lug and head.
The records examined also indicated that the weid preheat ec=perature' wns maintained in the range of 1500 - 2000F.
The specified weld pre-heat temperature range was 150.0F. A: axi=u: interpass tc=perature of 5000F was specified while the actualL(docu=ented) interpass tenperatu're
'Inw %.. :during c:anufceture vas =aintained between.1:50
. 250 F.'..Thescite
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. peratures are in ;accordance with the uciding procedure cualification i
range end in confor=ance with_ASME Section.IX,' paragraph Q-ll, V-5.
' Subsequent to the inspection, the inspector deter =ined by a telecon S
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, T with the vendor, that the records indicating the actual qualificatica
' veld preh.*at and interpass tc=peratures were'en file in the 3&W
. Barberton Ohio Plant. This item vill be verified during a'subse-qucnt. inspection.
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/ ce SECTION IV v..
Additional Subiects Insnected. Not Identified In Section I, ITnere 'to De-ficiencies Or Unresolved Itc=c h*ere Found 1.
General Review of the reactor vessel flange material certification was the only ites examined during this inspection.
Details of Subiects Discussed Itt Section I i
2.
Eterial cualification for the Reactor vessel F1ance 214-51-1)
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The corrected material certification dated April 20, 1972, for this conponent states in part:
" --- All test coucons vere stress re-lieved prior to testing at 1123 F + 25 F, held for 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> and furnace cooled at below 6000F.
This item is considered resolved.
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