IR 05000373/1979004
| ML19282B854 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 01/31/1979 |
| From: | Danielson D, Yin I NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19282B852 | List: |
| References | |
| 50-373-79-04, 50-373-79-4, 50-374-79-01, 50-374-79-1, NUDOCS 7903160262 | |
| Download: ML19282B854 (7) | |
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t U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-373/79-04; 50-374/79-01 Docket No. 50-373; 50-374 License No. CPPR-99; CPPR-100 Licensee:
Commonwealth Edison Company P. O. Box 767 Chicago, IL 60690 Facility Name:
La Sulle County Station, Units i and 2 Inspection At:
La Salle Site, Marseilles, IL Inspection Conducted: January 10-12, 1979
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s Inspector:,,I.
T. Yin
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Approved By:
D. H. Danielson, Chief
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Engineering Support Section 2 Inspection Summary Inspection on January 10-12, 1979 (Report Nos. 50-373/79-04; 50-374/79-01)
Areas Inspected:
Inspection of safety-related hangers and restraints including (1) review of welding and NDE procedures for hanger installa-tion, (2) review of welding records, (3) observation of expansion anchor bolt installation, and (4) review of rework and replacement program for anchor bolts. The inspection involved a total of 15 inspector-hours onsite by one NRC inspector.
Results: Of the four areas inspected, no apparent items of noncompliance were identified in two areas; two apparent items of noncompliance were identified in two areas - (infraction - inadequate inspector for anchor bolt installation - paragraph 3; infraction - inadequate rework and replacement procedure for rejected anchor bolts - paragraph 4).
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DETAILS Persons Contacted Principal Licensee (CECO) Employees
- L.
J. Burke, Site Project Superintendent
- T.
E. Quaka, QA Supervisor
- J.
R. Kodrick, QA Mechanical Coordinator
- L. H. Lauterbach, QA Structural Coordinator
- R. A. Braun, QA Engineer
- L.
J. Tapella, QA Engineer
- B.
J. McAndrew, Lead Mechanical Engineer Morrison Construction Company (MCCo) Personnel
- T. O'Connor, Superintendent
- R.
C.
Schulz, QC Supervisor
- M.
Wherry, QC Welding Supervisor The inspector also contacted other licensee representatives in the course of conducting this inspection.
- Denotes those attending the exit interview.
Licensee Action on Previous Inspection Findings (Open) Noncompliance (Report Nos. 373/79-25-01; 374/78-16-01) - Inadequate specification for procuring mechanical snubbers. The inspector reviewed the content of the ECN M-145-LS, dated November 15, 1978, adding require-ments for the mechanical snubbers and had no adverse comments.
The ECN had not been approved by CECO.
The inspector requested functional test reports and envirc.nmental test reports be available at the site for future site inspection.
(Open) Noncompliance (Report Nos. 373/78-25-02; 374/78-16-02) - Inadequate installation and QC inspection procedure for hangers and snubbers. The inspector reviewed the areas concerning acceptable tolerance.
The newly established S&L " Calculation for M-143-LS:
Snubber Installation Tolerances,"
dated December 22, 1978, appeared to be adequate. These requirements had not been incorporated into MCCo work procedures.
(0 pen) Noncompliance (Report Nos. 373/78-25-05; 374/78-16-04) - Inadequate storage control for hangers and restraints.
The licensee was in the process of performing 100% visual inspection of hangers located in outdoor laydown areas, checking for the following items:
(1) make sure hangers are off the ground, (2) remove all cardboard and paper which may entrap moisture-2-
i from assembled hangers, (3) check Fig. 211 ball bushing for freedom of movement and follow manufacturers instructions attached (tape the ball bushings if acceptable), (4) plug grease fitting opening on Fig 221's and (5) any ball bushing on Fig. 211 that does not move freely should be reported to Station Construction.
Some of the above requirements were established in a ITT-Grinnell Inter Office Correspondence, " CECO - La Salle Station Corrosion of Hangers in Storage," dated November 28, 1978.
(0 pen) Unresolved Matter (Report Nos. 373/78-25-06; 374/78-16-05) -
Snubber clamps on pipe elbows.
A GE site manager letter to CECO, SLL-951, "NRC Unresolved and Noncompliance Items," dated November 30, 1978, stated that, "A Pacific Scientific representative visited the site on October 17, 1978, to obtain measurements which will be used in redesigning the snubber clamp in question.
I do not presently have a scheduled date for delivery of the redesigned clamps."
(0 pen) Unresolved Fbtter (Report Nos. 373/78-25-07; 374/78-16-06) -
Concerns relative to the Pacific Scientific Co. (PSC) mechanical snubber test results. The inspector reviewed a GE letter, No. 1016, from Engineering to Site Manager, entitled "Recirc, System Pipe Suspension Snubber Qualification Testing - Use of Displacement Control in Place of Load Control for Dynamic Cycling Test," dated November 28, 1978. The letter states "the engineering group responsible for this area concurs with the findings of the test equipment manufacturer that the test facility design is in error, and that the snubbers sustained damage because of this error, and not through any deficiency in the snubber." The inspector questioned (i) why the test facility design error was not corrected, and (2) how cculd one assure that the other testings, that show good results using the same setups, were meaningful.
The inspector requested more tech-nical datas relative to the test and QA/QC audit reports of the testings.
Function or Program Areas Inspected 1.
Review of Welding and NDE Procedures for Safety Related Hancers and Restraints a.
The inspector reviewed the following MCCo Welding procedures:
(1)
WPS No. PI-18LS, " Procedure Specification for SMAW of Carbon Steel Materials According to ASME Boiler and Pressure Vessel Code,Section IX" including " Addenda for GE Work," Revision 6, daced May 23, 1977. The WPS was qualified on May 14, 1976, and recorded in Procedure Qualification Record (PQR) No. 109.
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SSUd1 of WPS No. PI-3LS, " Procedure Specification for
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Carbon Steel Materials According to ASME Section IX (2)
12, 1977.
dated May 130.
1976 and recorded in PQR No.
SMAW of WPS No. DS-SLS, " Procedure Specification for ding to Carbon Steel to Stainless Steel Materials AccorSection (3)
The ASME B&PV Code, 21, 1969, and recor ed d in WPS was qualified on February PQR No. 40.
The The inspector reviewed the following NDE procedures.
i ation.
Class 1 and 2 systems require visual and PT/MT exam n b.
l The Class 3 system requires visual examination on y.
(SOP) No. NDE/VE 2, MCCo Standard Operations Procedure" Visual Exam (1)
January, 1977.
Examination per MCCo S0P No. NDE/L-2, " Liquid Penetrant 1977.
ASME Section V," Revision 7, dated November, (2)
Conam Inspection Division NDE Procedure MT-1-NP,
" Magnetic Particle Method," approved by CECO on (3)
October 13, 1976.
ified as a No items of noncompliance or deviations were ident result of the review.
Weld Record Review of eight shear lugs 2.
Hanger Nos. M09-MS-04-1332S and 1340S consist 12" f abricatec f ron SA welded to the safety related line IMSO4BC-The procedure used was 411137471.
The lug 106, Gr. B material.
i h Heat No.
material was SA 516, Gr. 70. a P1 material, w tare 7L21910 (1/8" E-6010, F The The weld filler metal Heat Nos.(3/32" E-7018, F-4 electrodes).The insp electrodes), and 432 B5961 identifications are M64, and welders'
(1) procedure qualification, reports.
certified material test ified as a No items of noncompliance or deviations were ident result of the review.
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Installation and Inspection Program for Concrete Expansion Type 3.
Anchor Bolts The inspector observed five snubbers utilizing concrete expansion following. All anchor anchor bolts for installation and found the bolts observed were 5/8" and required installation torque of 80 to 90 ft-lbs and test to 60 ft-lbs.
M09-HP14-1002S a.
of the f our bolts f ailed the torque test.
Two out b.
RH01-1012S Twg of the four bolts were installed approximately (1)
of perpendicular to the concrete surface.
15 out (2) All bolts passed the torque test.
RH50-1002S c.
All four bolts passed the torque test.
d.
RH04-1020S (right)
(1) All four bolts had been cut.
(2) All four bolts failed the torque test.
RH04-10205 (left)
e.
(1) All four bolts had been cut.
Two of the four bolts failed the torque test.
(2)
As a result of this observation, the inspector considers the installation and inspection program for concrete expansion anchor bolts deficient in the following areas:
of to which anchor bolts can be installed out a.
The extent plumb was not specified or inspected.
b.
The minimum bolt embedment length was not defined or inspected.
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c.
With the 40% torque test failure on the 5/8" bolts, the existing samplir g program established by S&L, as follows, was not considered sufficient. Paragraph 4.2.2 of Form LS-CEA, dated December 7,1976, (A part of S&L Specification J-2539, " Piping Erection") states:
(1) One out of each two hundred expansion anchors installed but a minimum of one per day shall be randomly selected for testing.
(2)
If this tested anchor is unacceptable, two other anchors in the same group as defined in Article 4.2.2a shall be tested.
(3)
If one of these two anchors is unacceptalbe, ten other anchors of the same group as defined in article 4.2.la shall be tested.
(4 )
If two or more of these ten anchors are unacceptable, all other anchors in this group as defined in article 4.2.2a shall be tested.
(5)
Information on all expansion anchors that require replacing shall be sent to the Consulting Engineers for review and resolution.
This is an item of noncompliance in Appendix A.
(373/79-04-01; 374/79-01-01)
4.
Rework and Replacement for the Concrete Expansion Anchor Bolts The inspector reviewed MCCo procedure PC-42, " Expansion Anchor Control Program for Nuclear Safety Related Work," Rev. O, dated March, 1977, relative to the subject matter, and considered it inadequate based on the following:
a.
In review of the record, from August 22, 1978, to the date of inspection, approximately 14 bolts were rejected.
Only one out these 14 bolts was reworked and reinspected.
There appeared to be a lack of procedural provisions to ensure timely corrective action, and to record the problems encountered.
b.
Paragraph 4.2.3.c of Form LS-CEA, dated December 7, 1976, (A part of S&L Specification J-2530, " Piping Erection") stated that
" Unacceptable installed anchors shall be retorqued or replaced, and then re-tested and re-inspected."
In view of the many anchor bolts that failed the torque test, no replacement procedure has been established.
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(373/79-04-02; This is an item of noncompliance in Appendix A.
374/79-01-02)
Exit Interview the conclusion of inspector met with licensee representatives at the inspection on January 12, 1979.
The inspector summarized the scope The The licensee acknowledged the findings and findings of the inspection.
reported herein.
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