PLA-1121, Final Deficiency Rept Re Inadequate Documentation for Miscellaneous Steel,Initially Reported 810513.Discrepancies Caused by Bloomsburg Metal Co Method of Matching Mill Test Rept W/Steel to Be Shipped
| ML20054E979 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 06/08/1982 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, PLA-1121, NUDOCS 8206150098 | |
| Download: ML20054E979 (21) | |
Text
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6 33&.
Pennsylvania Power & Light Company Two North Ninth Street
- Allentown, PA 18101 e 215 / 770L5151 Norman W. Curtis Vice President-Engineering & Construction-Nuclear 215 / 770-5381 June 8, 1982 Mr. R. C. Ilaynes Regional Administrator Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 SUSQUEllANNA STEAM ELECTRIC STATION FINAL REPORT ON A DEFICIENCY RELATING TO INADEQUATE DOCUMENTATION FOR MISCELLANEOUS STEEL ERs 100450/100508 FILE 821-10 PLA-1121
Reference:
PLA-859 dated June 23, 1981
Dear Mr. Ilaynes:
This letter contains information which serves to provide the Commission with a final report on the deficiency involving inadequate documentation for miscellaneous steel.
This condition was originally reported in a telephone conversation between Mr. L. Narrow of NRC Region I and Mr. A. R. Sabol of FP&L on May 13, 1981.
l At that time, the condition was considered to be potentially reportable under the provisions of 10CFR50.55(e). Our interim report (referenced above) described the condition.
The attached report outlines the evaluation undertaken to determine whether the condition identified is reportable under the provision of 10CFR50.55(e).
Our conclusion is that it is not reportable.
We trust the Commission will find this report to be satisfactory.
Very truly yours, A
j-N. W. Curtis Vice President-Engineering & Construction-Nuclear BMS:sab Attachment C206150098 820608 PDR ADOCK 05000387 S
June 8, 1982 SSES PLA-ll21 ERs 100450/100508 File 821-10 Mr. R. C. Haynes cc Mr. Richard C. DeYoung (15)
Director-Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. G. Mcdonald, Director Office of Management Information & Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Gary Rhoads U. S. Nuclear Regulatory Commission P.O. Box 52 Shickshinny, PA 18655
June 8, 1982 SSES PLA-ll21 ERs 100450/100508 File 821-10 Mr. R. C. Haynes cca Mr. J. R. Calhoun
- iW16 Mr. B. D. Kenyon
- N4 Mr. W. E. Barberich
- N4 Mr. R. A. Beckley
- Susq. SES Mr. G. C. Bell
- Susq. SES Mr. N. T. Coddington
- N4 Mr. H. R. Clarke
- N5 Mr. T. M. Crimmins, Jr.
- N5 Mr. S. L. Denson
- Susq. SES Mr. M. B. Detamore
- Susq. SES Mr. F. T. Eisenhuth
- Susq. SES Mr. E. W. Figard
- Susq. SES Mr. E. J. Gorski
- Susq. SES Mr. J. D. Green
- Susq. SES Mr. H. W. Keiser
- Susq. SES Mr. C. I. McVicker
- N4 Mr. A. W. Metzger
- N5 Mr. W. R. Kline
- N5 Mr. D. E. Sachs
- N5 Mr. J. Saranga
- N4 Mr. R. A. Schwan
- N4 Susquehanna Letter File
- N3 SP&E Correspondence File - N3 QA Clerk
- N4 8.1.2A #81-21 File
- N4
SSES PLA-ll21 ERs 100450/100508 File 821-10.
PENNSYLVANIA POWER & LIGHT COMPANY NUCLEAR DEPARTMENT NUCLEAR PLANT ENGINEERING
' FINAL REPORT CONTENTS Section Title Page Contents i
1.0 Subject l'
2.0 Description 1
3.0 Cause 2
4.0 Technical Evaluation 2
5.0 Safety Implications 4
6.0 Corrective Actions 4
Table 1 List of Purchase Orders For Which Mill Test Reports Were Required Table 2 Summaries of Steel Quantities from Purchase Orders Table 3 Results of Sampling Program for Twelve Locations Identified as Possible AR Plate Substitutions Figure 1 Flowchart Showing Steps to Follow During Sampling of C-16 Steel Plate Appendix Procedure Developed by Reluxtrol, Inc.
to Identify Installed A-36 Plate i
SSES PLA-ll21 ERs 100450/100508 File 821 1.0 SUBJECT Inadequate documentation of steel supplied by Bloomsburg Metal Company to Susquehanna Steam Electric Station (SSES), Units 1 and 2, under Specification 8856-C-16 (Furnishing and Delivery of Miscella-neous Metal). The subsequent review of this problem has resulted in the disposition that the inadequate documentation does not represent a reportable condition under the provisions of 10CFR50.55(e).
2.0 DESCRIPTION
Bloomsburg Metal Company (Wilkes Barre, PA) supplied. steel to SSES between September 1974 and April 1981. All of this material was delivered unfabricated under Specification 8856-C-16 and was later fabricated and installed throughout the plant by Bechtel Power Corporation (A/E) field personnel under Bechtel QA/QC programs. This material was purchased under a provision in the specification that allows procurement of unfabricated, miscellaneous steel from suppliers who are not required by other sections of the procurement documents to maintain and/or implement a Quality Assurance Program.
Specification 8856-C-16 Paragraph 12.6 requires that Mill Test Reports be furnished for all material except A36 sheet and strip 3/16 inch and under in thickness. ~There are other minor exceptions to this requirement such as nuts, washers, A307 bolts and aluminum products.
During a Bechtel QC review of supporting documentation for a shf? ment of Bloomsburg Metal Company steel, it was noted that the total quantity of material shown on a Mill Test Report for a specific heat was less than the total quantity of material received under that heat. Upon this discovery, Bechtel QC performed further investigation of their documentation files and found additional discrepancies of a similar nature. This resulted in Bechtel QC documenting (via NCR 7561 reported on April 15, 1981) that the quality of all materials l
supplied by Bloomsburg Metal Company was indeterminate. The material j
for which Mill Test Reports were not required is not of concern because high assurance of the quality of this material is not essen-l tial to the safe operation of the plant.
l Mill Test Reports were required for all material listed in Table 1.
.The A325 bolts listed in Table 1 are easily recognized by.a designa-tion (A325) on the head of the bolt. The stainless steel bar under Purchase Order 44204 is not of concern because high assurance of the quality of this material is not required. The application of the stainless steel bar used from Purchase Order 38598 was investigated and is discussed in Section 6.0.
Therefore, the deficiencies are confined to the A36 and A500 steel for which Mill Test Reports were required. Table 2 is a summary of the quantities of steel purchased from Bloomsburg Metal Co. between 1974 and April, 1981 and the scope of the material covered by NCR 7561.
1 i
- ~.... -
_.... _.. _,. _.. _ _. -. _. _. _,. - ~ _
SSES PLA-ll21 ERs 100450/100508 File 821-10 3.0 CAUSE After discovery of the deficiencies, Bechtel QA conducted an audit on May 21, 1981 at Bloomsburg Metal Company in which representatives from Bechtel Resident Engineering and PP&L QA were in attendance.
The storage areas were inspected.
In addition, 235 Mill Test Reports, as well as, vendor and subtier vendor documentation were reviewed.
It was determined that the discrepancies were caused by Bloomsburg's method of matching the appropriate Mill Test Report with the steel to be shipped.
On February 11 and 12, 1982, PP&L QA performed a verification activity at Bloomsburg Metal Company. The investigating team consisteo of representatives from PP&L QA and Engineering as well as Bechtel QA.
The team first toured the supplier's facility. They then reviewed all available Mill Test Reports and Purchase Orders (between Bloomsburg Metal Company and its' suppliers) from 1974 through August 1981 for all items that could have been placed in the A36 or A500 storage area. The results of this activity reinforced Bechtel's conclusion concerning the cause of the documentation discrepancies.
Bloomsburg assigns a Mill Test Report to a piece of steel to be shipped by the following method:
a.
From an inventory card, the approximate date and source of an item received by Bloomsburg Metal Company is selected.
b.
An invoice is selected based on this date and source; not from an invoice number. A specific tie-in between the inventory card and the invoice does not exist.
c.
A Mill Test Report is selected according to the date which matches that of the invoice; not by matching heat numbers. A specific tie-in between the invoice and the Mill Test Report does not exist.
d.
The heat number from the Mill Test Report is then painted on the steel to be shipped.
This method does not assure that the prop?r Mill Test Report is shipped with the steel selected from the storage area. Therefore, the quality of all steel shipped by Bloomsburg Metal Company during the referenced time period was considered indeterminate and an investigation was initiated to review the technical implications of the deficiency in assigning Mill Test Reports.
4.0 TECHNICAL EVALUATION
All potential substitutes for the Bloomsburg Metal Company steel supplied to SSES were evaluated based on the results of the Bechtel audit and the PP&L verification activity.
In addition, Bechtel 2
SSES PLA-ll21 ERs 100450/100508 File 821-10 performed a sampling program comprised of 51 samples from separate heats (Bloomsburg assigned). These samples were obtained from various locations (constructed and in material laydown area) and shapes selected at random from Bloomsburg material received at SSES.
Mill Test Reports furnished by Bloomsburg indicate that all the material delivered to SSES came from approximately 200 heats.
The results of all evaluations conducted to disposition this poten-tially reportable deficiency indicate that the only potential problems are the questionable weldability characteristics of the following steels:
Abrasion resisting (AR) grades of steel plates substituted for a.
A36 steel in thicknesses of 3/8" and over.
No ASTM standard exists for AR steels. Most have higher allow-able carbon limits than A36, usually over 0.40%.
Therefore, for plate thicknesses of 3/8" and over, weld heat affected zone (HAZ) cracking could occur if this material were substituted for A36, because of insufficient preheating if it were welded using A36 procedures. Plates thinner than approximately 3/8" have a relatively small heat sink effect on the HAZs. Thus, the undesirable untempered martensite phase (brittle) is not likely to form, because of the lack of a rapid quench effect that would be present in thicker plates (refer to Fig. 3. Pg. 188, Vol. 6, 8th edition of the Metals Handbook by the American Society for Metals).
Furthermore, thin plates do not usually have excessively high restraint in weldments, which is a major cause of cracking, and they are almost certainly loaded under the favorable plane stress condition rather than the more severe plane strain condition.
5 A514 steel plates substituted for A36 steel.
The welding code in effect at the time of construction was the 1972 edition of the American Welding Society (AUS) (D1.1-72).
It has the following preheat requirements:
Thickness A514 A36 Difference up to 3/4" 50*F 18* (Max) 3/4" to 1-1/2" 125'F 70*
55*
1-1/2" to 2-1/2" 175*F 150' 25' over 2-1/2" 225'F 225*
0*
- None (unless base metal < 32*F then it must be preheated to at least 70*F and maintained at this temperature during welding).
The minimal differences for the required preheat temperatures, together with the low carbon limits (.21 max.) would not be 3
SSES PLA-ll21 ERs 100450/100508 File 821-10 expected to result in any detrimental amounts of untempered martensite in the HAZs of welds in A514 plates [see 3rd paragraph of "High-Strength Plate and Structural Steels (As-Rolled or Normalized), Pg. 205, Vol. 6, 8th edition of the Metals Handbook by the American Society for Metals].
The PP&L NQA Verification Activity determined, based on available documentation at Bloomsburg Metal Co., that Bloomsburg stocked A514 plate primarily in thicknesses no greater than 1/2 inch.
This, coupled with the negligible difference in preheat tempera-tures (at thicknesses less than 5/8 inch), leads to the conclu-sion that A514, if substituted by Bloomsburg for A36 plate, would not result in an unacceptable constructed condition.
c.
Heat Treated. Quenched and Tempered Steel A typical certified mill test report of this type steel that was supplied to Bloomsburg Metals reveals that it complies with Type A514, Grade A.
Thus, the above stated reasons (Para.b.) also apply to these steels.
5.0 SAFETY IMPLICATIONS PP&L informed the NRC on May 13,1981 (as documented in PLA-859 dated June 23, 1981), that the situation as described in NCR 7561 repre-sented a potentially reportable condition under the provisions of 10CFR50.55(e).
The only material for which potentially deficient substitutions could have occurred is A36 plate thicker than 1/4 inch. No substitutions of this type have been discovered for any erected steel at SSES based on the results of the first sampling program (performed by Bechtel).
However, one sample from the laydown area at SSES was determined to be AR steel.
Further investigation has been performed to properly evaluate the safety implications of this problem. PP&L considers this condition to be not reportable under 10CFR50.55(e) based on the findings of the investigation undertaken in Section 6.0 of this report.
6.0 CORRECTIVE ACTION The following actions were taken to prevent recurrence of the problem:
a.
No steel has been purchased from Bloomsburg Metal Company under Specification 8856-C-16 since October, 1981.
b.
PP&L has initiated an investigation of additional control measures to assure the validity of documentation received in conjunction with procurements.
4
1 e
f4 YV ~
SSES PLA-11211 ERs 100450/100508 File 821-10 In addition..a second sampling program was performed lto identify-possible problems caused by the documentation deficiency.
Since all' of the Bloomsburg Metal Company steel could not be traced'to its erected location, the sampling program was designed to sample critical' locations (installed) where miscellaneous steel plate (supplied under Specification 8856-C-16) greater'than 1/4 inch thick had been welded.
The sampling base would include steel supplied by all known suppliers under Specification C-16.
To accomplish the review of installed locations, it was decided by Nuclear Plant Engineering (NPE) to test accessible locations in the drywell of Unit 1.
The decision to limit testing to the Unit 1 drywell.was made for uro reasons:
- 1) all C-16 steel in the drywell was required to by "Q". listed or safety related, and 2) schedule restrictions required that the program be done on a scale'representa-tive of those locations within the plant where C-16 plate could have been used.
The test performed was a non-destructive, controlled reluctance eddy current test procedure which has been develope'd and patented by Reluxtrol, Inc. This neocedure identified A36 and similar steels based.on a repeatalle output on the Reluxtrol scope.
The reading was then compared wirk'that from samples of AR and AISI 1045 steels. The oscilloscope was calibrated using the following:
- 1) a sample of A36 steel with carbon content of approximately 0.20%
(ASTM 0.25% max, allow.); and 2) a sample of'1045 steel with a 0.46%
carbon content. By calibrating to these two standards, it was-j assured that A36 steel would be properly identified during the testing program.
The second C-16 Sampling Program was developed to identify installed locations of plate material equal to or greater:than 3/8 inch in thickness which was not of the A36 family of steel. Numerous organi-zations were involved in this project to properly coordinate and supervise the actual testing. Below is listed the scope of the.
activities covered by the sampling program along with ' 2 responsible organization:
' Responsible-Activity Organization 1)
Provide program management and necessary NPE-Civil administrative support.
2)
Develop acceptable procedure to properly Reluxtrol, Inc.
identify the A36 steel family.
3)
Perform review of engineering drawings Bechtel-Civil /SFO for locations of A36 plate in the Unit I d rywell.
4)
Review Field Work Orders (FW0s) prepared Bechtel Field Eng.
by Civil, Electrical, I&C and Piping 5
SSES PLA-ll21 ERs 100450/100508 File 821-10 Responsible Activity Organization groups for use of C-16 A36 plate 3/8 inch or thicker.
5)'
Provide field support to direct Reluxtrol Bechtel Field Eng.
personnel to plate locations to be tested.
6)
Provide means of documenting (form) test PLNQA results in the field.
7)
Supply sufficient personnel to witness PLQC/ Field and verify Reluxtrol tests.
8)
Provide necessary liason with field super-PL Project vision to assure that necessary craft Construction personnel are available.
9)
Ensure that the depth of the ground area Bechtel Quality is in conformance with Bechtel FCR C-5442 Control (see note)
~
and that the coating is repaired in accordance with FCR A-1047.
NOTE:
QC function under Item 9 was performed using Bechtel Field Welding Engineers with surveillance provided by Bechtel Quality Assurance (field).
Prior to being authorized to start the testing program in the Unit I drywell, Reluxtrol, Inc. was required to prepare an acceptable procedure to identify the A36 steel plate in constructed locations.
In adoition, Reluxtrol, Inc. was instructed to prepare a procedure to be used for failed (non-A36) locations where it would be necessary to test the weld for surface cracks. A copy of the identification procedure is included in the appendix to this report. Due to the results of this sampling program, it was not necessary to utilize the procedure for surface crack detection. A more detailed description of the testing philosophy can be found in the Sampling Program Document, PLI-18335.
Figure 1 is a flowchart of the steps followed in the C-16 Sampling Program.
Prior to performing the eddy current test on the installed plate, it was necessary to prepare the metal surface by grinding the base metal to a depth of at least 0.010 inch over an area of at least 0.25 square inches. Af ter the ground area was checked for proper depth, Reluxtrol, Inc. performed the eddy current test.
If the tested location was dispositioned in the gray zone (greater than 1.0 unit above A36 standard but below AR standard), a hardness test was 6
SSES PLA-ll21 ERs 200450/100508 File 821-10 performed to identify plate material which was acceptable as A36 plate. Any material rejected as AR plate would then be checked for surface and underbead cracking to determine if repair was necessary.
An engineering evaluation would then be performed to determine the criticality of the installed plate and a schedule for the completion of any necessary repairs.
Documentation of the test results was accomplished by the use of a PP&L Quality Control Checklist modified for use in this testing program. Checklist SM-2, Revision 0, included a list of instructions on how to use the form and the flowchart given in Figure 1 of this report.
PP&L QC representatives were present at all times during the grinding and testing periods. All of the completed checklists have been placed in the permanent PP&L QC files as Quality Control Inspec-tion Reports (QCIRs).
The review of applicable drawings and Field Work Orders (FW0s) resulted in a sampling population of approximately 1000 plate loca-tions in the Unit 1 drywell where C-16 plate of the desired thickness was identified. A total of 403 pieces of plate were tested using the Reluxtrol eddy current procedure. Twelve (12) of these plates were dispositioned as being in the gray zone and required further testing.
The remaining 391 plate locations were dispositioned as being A36 steel. Table 3 contains a list of the twelve plates with readings in the gray zone on the Reluxtrol Scope.
Included in this table is infoppation describing the location of the plates, as well as the CREG reading, Equotip hardness reading, and the final disposition of the plate material.
As presented in Table 3, all twelve plate locations which initially failed the Reluxtrol scope test, passed the hardness test.
Based on a technical evaluation of the acceptable hardness levels for A36 plate, any value below 433 on the Equotip hardness tester (Brinell hardness of 165 max.-3000 Kp Scale) was considered indicative of A36 plate.
In the final analysis, none of the tested locations were classified as being AR steel.
The zero percent failure rate, in a sample which represented approxi-mately 40 percent of the identified population, has led NPE to the conclusion that the problem with substitute steel provided under Specification 8856-C-16 is not of sufficient magnitude to affect the safety of installed plate at Susquehanna SES.
No further carrective action is required based on the results of this investigation.
The stainless steel purchased under P.O. 38598 was located in the field and is presently inaccessible to perform magnetic property tests.
However, a review of the design which utilizes this steel indicated its use as being that of a spacer naterial in the construc-tion of a jet impingement barrier. Under deafgn conditions, the stainless steel blocks would be in compression and would perform 7
ERs 100450/100508' File 821-10 4
. their intended ' function. No further testing of this material is -
required.-
7. 0' CONCLUSION Based on the results of the investigation described in this report, the documentation deficiencies related to Bloomsburg Metal Co. are considered to be not reportable under the provisions of 10CFR50.55(e).
R-07/cak
[
8 i
Shast 1 of 3~
+
SSES PLA-ll21 ERs 100450/100508 File 821-10 LIST _OF PURCHASE ORDERS FOR WHICH TEST REPORTS WERE REQUIRED (Specification 8855-C-16 Material from Bloomsburg)
Material P.O. No.
Page Date of Order Material Specification, 51231 1
4/22/81 Steel PL A36 50584 5,7 2/26/81 Steel L,W A36 50104 9
2/17/81 Steel TS A500 50301 12 2/16/81 Steel-TS A500 49452 14 1/26/81 Steel TS A500 49366 15
'1/9/81-Steel PL A36 48249 19 11/6/80 Steel
.c A36 48053 21 10/22/80 Steel W,L A36 47518 22,23 10/3/80 Steel PL, Shapes A36 48344 25,27
-1/23/81 Steel PL, Bar A36 46220 41 7/31/80 Steel Bar A36 45246 50 6/11/80 Steel Bar A36 44570 58 5/13/80 Steel W,L A36 44570 58 5/13/80 Steel TS A500 44366 60 5/5/80 Steel C
A36 44046 62 4/16/80 Steel W
A36 44083 64 4/21/80 Steel PL A36 43413 70 3/19/80 Steel L
A36 44204 72 4/25/80 Stainless -Bar A276/479 Steel 43346 74,75 3/17/80 Steel PL A36 43691 78,79 4/2/80 Steel Bar,PL,L A36 43027 81 2/22/80 Steel TS A500 42639 86 2/7/80 Steel TS A500 42639 88 2/1/80 Steel L
A36 42433 90,92 1/18/80 Steel PL,C A36 42157 94 1/17/80 Steel PL A36 40946 97 11/19/79 Steel L
A36 40530 99 10/25/79 Steel W
A36 41832 102 1/3/80 Steel W,PL A36 41832 102 1/3/80 Steel Bolt A325 41681 104 12/16/79 Steel PL A36 40386 110 10/18/79 Steel PL A36 40036 114 10/9/79 Steel W
A36 39830 116 9/29/79 Steel L
A36 l
40034 118 10/5/79 Steel PL A36 35548 121 3/8/79 Steel PL A36 l
30953 123 8/17/78 Steel Bar A36 1
30957 124 8/17/78 Steel C,Bar A36 30729 125 8/8/78 Steel W
A36 30596 126 8/7/78 Steel C
A36 30581 127 7/31/78 Steel PL A36 29998 128 7/19/78 Steel W
A36 29532 129 6/22/78 Steel L
A36 i
Sheet 2 of 3 SSES PLA-ll21 ERs 100450/100508 File 821-10 TABLE 1 (CONT'D)
Material P.O. No.
Page Date of Order Material Specification 29752 131 6/26/78 Steel L
A36 28094 133 4/28/78 Steel WT A36 27133 135 3/10/78 Steel L
A36 28092 137 4/26/78 Steel PL,L A36 27132 139 3/8/78 Steel PL A36 26821 141 3/6/78 Steel C
A36 26823 143 3/3/78 Steel L
A36 26822 145 2/27/78 Steel C
A36 26868 147 2/27/78 Steel C
A36 26808 149 2/24/78 Steel C,L A36 26812 151,153 2/21/78 Steel PL,Bar A36 26865 155 2/9/78 Steel WT A36 27177 157 2/16/78 Steel W
A36 27176 159,161 2/16/78 Steel C,PL A36 26491 163 2/14/78 Steel PL A36 26485 165 1/31/78 Steel C
A36 26486 166 2/2/78 Steel PL A36 26285 168 2/1/78 Steel Bar A36 26497 170 2/1/78 Steel L,Bar A36 26277 172 1/30/78 Steel PL A36 26813 174 1/31/78 Steel PL A36 26274 176 1/27/78 Steel PL A36 26270 178 1/25/78 Steel TS A500 25845 180 1/18/78 Steel PL A36 25690 182 1/9/79 Steel C,L A36 25431 186 12/21/77 Steel PL A36 25678 188 12/15/77 Steel PL A36 25166 191 12/16/77 Steel PL A36 25165 193 12/16/77 Steel PL A36 25158 195 11/30/77 Steel PL A36 24744 198 11/14/77 Steel C
A36 23335 200 9/28/77 Steel L
A36 22684 202 9/7/77 Steel L,C,Bar A36 22672 203 8/31/77 Steel L
A36 23341 205 2/14/78 Steel L
A36 22376 206 8/24/77 Steel PL A36 20685 210 6/13/77 Steel PL A36 20263 212 5/11/77 Steel L
A36 19899 214 4/18/77 Steel C
A36 19905 216 4/26/77 Steel L
A36 19354 218 3/30/77 Steel PL A36 19340 220 3/21/77 Steel W
A36 19049 222 3/11/77 Steel W
A36 18425 224 1/25/77 Steel L,Bar A36 16905 226,229 11/15/76 Steel L.C.PL A36 22990 232 1/12/76 Steel PL A36 22992 234 1/12/76 Steel PL A36
r" Shsst 3 of.3 SSES PLA-ll21 TABLE 1 (CONT'D1 Material:
P.O. No.
Pajgt Date of Order Material Specification 10793 237.
1/20/76 Steel W
A36 10733-238 1/16/76 Steel L
-A36-10577 243 12/17/75 Steel Bar A36' 10576 245 12/17/75 Steel Bar A36 10294 246 12/5/75 Steel L
A36'
'7838 249 8/25/75 Steel
'L-A36 23161 260 10/3/77 Steel L
A36 40729 265
'11/7/79 Steel C
A36 28031 266 4/14/78 Steel Bar A36 36752 268 4/25/79 Steel C,PL A36.
44759 272
'4/25/79 Steel PL A36 38598 275.
7/26/79 Stainless Bar A304 Steel R-06/cak l
l l-l
SSES PLA-1121 ERs 100450/100508 File 821-10 TABLE 2 SUMMARIES OF STEEL QUANTITIES _FROM PURCHASE ORDERS (Specification 8856-C-16 Steel from Bloomsburg)
Total Steel, all types.
1,114,000 lb.
Total Steel, ASTM A36 1,002,000 lb.
Total Steel, ASTM A36 for which material test reports were reqsired.
949,090 lb.
Total Steel, ASTM A36 which is indeterminate because of improper or missing test _ reports 604,000 lb.
Total Steel, ASTM A500/501 for which material test reports were required 13,000 lb.
Total Steel, ASTM A500/501 which is
' indeterminate because of improper or missing test reports.
13,000 lb.
SSES PLA-ll21 ERs 100450/100508 File.821-10.
TABLE 3 RESULTS OF SAMPLING PROGRAM FOR TWELVE LOCATIONS IDENTIFIED AS POSSIBLE AR PLATE SUBSTITUTIONS CREG Reading Grating Item (Units above A-36 Standard)
Equotip Material FCI#
Item #
Azim Elevation
- Elevation *
.(AR Steels are z 2.0 Units)
Hardness **
Disposition C-1002-1 7A 165*
719 724 1.7 394 A36 Plate 4
C-1002-1 8B 165*
719 724 1.2 425 A36 Plate C-1002-1 2A 90*
719 724 1.2 397 A36 Plate C-1003-1 109A 205*
719 723 1.8 400.6 A36 Plate 1
C-1003-1 211B 210*
719 723 1.8 394 A36 Plate C-1003-1 211A 210' 719 723 1.7 393.2 A36 Plate E-26-3 E10 160*
719 723 1.8 362.7 A36 Plate C-1001-2 231B 37' 738 747 1.5 417.3 A36 Plate C-1001-2 232A 34*
738 746 1.5 399 A36 Plate-C-1075-2 2
195*
752 761 1.5 394.3 A36 Plate C-1075-2 3
195*
752 752 1.4 303.7 A36 Plate C-1075-2 4
195*
752 752 1.6 419.7 LA36 PlateL AR Sample N/A N/A N/A N/A 2.0 465 AR Plate 4
I 4
- Elevations are approximate values; refer to drawing. listed for exact elevations.
- Corrected for plate angle at which test was performed; any value below 433 (Rg= 85 or BHN 165) represents acceptable A36 plate.
FIGURE 1 SSES PLA-ll21,
ERs 100450/100508 File 821-10 FL0v'CMRT 20WIE STEPS TO MRW WMh'G SWPME OF C-16 STEEL PLATE
/
) Below/on Centerline ACCEPT b
Identify Y*fify Reluxtrol
\\
Grind N
s' rs es e s Depth Exam Sample
) Above Centerline d
E Recheck two 1
more places Above &
- Below/on &
- 42.0 units 2.0 units or moresf s/
se Reluxtrol to
(
AR Steel
- Gray Zone *
)
liardness Test Check for
'D If R
- 85 l
h longit, cracks surface, toe d
No Cracks
) No Cracks of the weld
~'
v, Surface Cracks Cracks Eng. Eval..- Applications, kNon-Critical
) Fixes after FUEL LOAD s
UT of Welds Loading, Safety Impact hixesbeforeFUELLOADl s
/
Critical Reluxtrol AR/A36 identification technique:
o.above AR (1045) standard - AR steel o below/on centerline - A36 Type struct. ' steel o Between & and AR (1045) standard - gray zone
- Plate to be dispositioned as A36, AR or Gray Zone based on majority of results from 3 locations x
SSSS PLA-1121 ERs 100450/100508 File 821-10 APPENDIX Procedure Developed by Reluxtrol, Inc.
to Identify Installed A-36 Plate
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7 M
SSES PLA-ll21 A Nondestructive Testing Company ERs 100450/100508 File 821-10 PROCEDURE CONTROLLED RELUCTANCE EDDY CURRENT (CREG ) INSPECTION FOR IDENTIFICATION OF A-36 TYPE STRUCTURAL STEEL AND ABRASION RESISTANT (AR) GRADES SIMILAR TO 1045 STEEL (4/20/82) 1.0 Test Equipment The inspection will be performed using a CREG 401 eddy current gen-erator and an -impedance plane display eddy current instrument.
2.0 Instrument Settin,s Freq;ency 50 KHz Sensitivity Approximatciy 0.5 (See Section 3)
Vertical 0.2 V/Div.
Horizontal 2.0 V/Div.
Storage On 3.0 Calibration Set-up on standard blocks A-36 (Bechtel N or Bechtel 0) and AR (1045)
Bechtel 8 or Bechtel K).
Note:
Standards are Bechtel supplied with certified mill test reports.
3.1 Balance on A-36 standard.
3.2 Adjust phase such that initial lift-off is horizontal and to the right on A-36.
3.3 Adjust position so that full-on A-36 signal is -3.0, +1.0 divisions
' horizontal and 0.0 + 1.0 division vertical.
3.4 Adjust sensitivity such that the difference between A-36 standard and AR (1045) standard is 2.0_+0.2 div, vertical at horizontal center of screen.
3.5 Calibration shall be re-checked every hour and when unit has been left unattended.
'Reluxtrol ssEs m -1 m A Nondestructive Testing Company ERs 1oo450/100508 File 821-10 4.0 Inspection Procedure 4.1 Prior to inspection, surface shall be prepared as specified in Section 5.0.
4.2 Grinding shall be performed at least one minute prior to inspec-tion.
4.3 Place probe in center of grind area on A-36 standard, check for signal tolerance.
NOTE:
If out of tolerance, adjust per Section 3.3 4.4 Place probe in center of grind area on test piece and check that j
trace moves to left of center 4.5 Compare signals from A-36 standard and test piece.
If test piece signal is more than one division above A-36 standard signal, check calibration per Section 3.
If, after re-calibration, the test piece signal remains more than one division above the A-36 standard l
signal, record vertical amplitude of the signal at horizontal center of screen.
5.0 Grinding Procedure Grinding will be performed using an aluminum oxide or silicon carbide grinding wheel.
Care shall be taken not to over-heat grind area.
Grinder shall be nove'd at a rate of 2 inches per second or greater and only light pres-sure applied.
Grind area shall not exceed a depth of 0.031", but must exceed 0.010" over an area of 0.25" in dianeter. Grind area shall be smooth and con-tain no sharp corners.
NOTE:
Test will be performed by a minimum of Level II Inspector.