IR 05000263/1976016
| ML20024G163 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 11/04/1976 |
| From: | Jackiw I, Jordan E, Key W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20024G161 | List: |
| References | |
| 50-263-76-16, NUDOCS 9102070615 | |
| Download: ML20024G163 (10) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCD1ENT
REGION III
Report of Construction inspection i
IE Inspection Report No. 050-263/76-16
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l Licensee:
Northern States Power Company 414 Nicollet Hall Funneapolis, Minnesota 55401 Monticello Nuclear Generating Plant License No. DPR-22
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Monticello, Minnesota Category:
C Type of Licensee:
BWR 1670 MWt Type of Inspection:
Announced, Special Dates of Inspection:
October 13 and 14, 1976
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Principal Inspector:
W. J. Rey
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Accompanying Inspector:
1. N. Jackiw bl Other Accompanying Personnel:
None
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Reviewed By:
. L. Jordan, Acting Chief
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Enginecirng Support Section
/(Date)
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9102070615 763104
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PDR ADOCK 05000263
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l SUMMARY OF FINDINGS Inspection Summa,rv i
. Inspection on October 13-14, 1976, (76-16):
Evaluate licensee commitment to NRR in their Plant Unique Analyses Report relative to Containment Short Term Program modifications to the Mark I torus support structures.
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i Reviewed modification records.
Inspected selecaed items of installed supports and welding.
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Enforcement Items Hone.
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Licensee Action on Previously Identified Enforcement Items Not applicable.
i Other Sir,nificant Items A.
Systems and Components None.
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B.
Facility Items (Plans and Procedures)
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Modifications to the torus support structures are estimated to be approximately 60% complete.
The licensee is presently developing procedures for modifications of the columns to the torus.
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C.
Managerial Items
None.
D.
Noncompliance Identified and Corrected by Licensee None.
l E.
Deviations None.
I F.
Stat.us of Previously Reported Unresolved Items Not appldcable.
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Management Interview A.
The following personnel attended a management interview held at the conclusion of the inspection.
Northern States Power Company (NSP)
L. Eliason, Plant Manager D. M. Vincent, Engineer R. Goranson, Assistant Production Engineer M. *l. Clarity, Superintendent Plant Engineering and Radiation Protection D. D. Antony, Plant Engineer B.
Matters discussed during the interview were as follows.
1.
The inspector stated that they had reviewed records relative to the torus modifications and had determined them to meet NRC requirements.
2.
The licensee stated that they estimated installation work to be approximately 60% complete.
The licensee further stated that procedures were being developed to' complete welding of the column-torus shell intersection during plant operations, and with water in torus.
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3.
The licensee stated, that they expected this work to start sometime during November, 1976.
4.
The inspectors stated that their inspection and measurements of welds on selected columns indicated that they were in accordance with drawings and procedures and in con.pliance with their commitment to NRR in their Plant Unique Analyses Report.
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REPORT DETAILS Section 1
Prepared by W. J. Key 1.
Persons Contacted No personnel, other than those listed under the Management Interview section of this report were contacted.
2.
Review of Quality Records The following (NSP) Welding Procedures, used during modification of torus, were reviewed and determined to meet code requirements.
NSP-WPS 5.2204 (IAl-SW) Revision, B NSP-WPS 5.2207 (lA8-SW) Revision, A NSP-WPS 5.2219 (lAl-F) Revision, A NSP-UPS 5.2203 (lAl-BR) Revision, C wfntractunei ts
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NSP-WPS 5.2107 (1Ati-0) Revision. L NSP-WPS 5.2109 (IAT8-0) Rev3e'on, C 3.
Material Certifications (
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Centra;, Steel and Wire Company Mater'al for wedges and blocks ASTM - $15 - Crade - 70, ordered on NSP P.0 M-92729 Heat No's, 64T229, T08134, D06143 4.
Proceduren and Specifications Peabody Testing (MT) procedure No. 3.21.A.i Test report No.
a.
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b.
NSP procedure No. DC-76M005, Revision 0 and 1 Torus Support Clevis Bearing Block Installation, c.
NUTECH Specifications, FIE-1, Revision 1, Fabrication, Instal-lation and Examination Requirements for Class MC Componento Liner Type Supports.
d.
IP-3, Revision 1, Installation Procedure for Pin Reinforcement.
ES-SFA-5.1, Specification for Mild Steel Covered Arc Welding e.
Electrode.
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5.
Personnel Qualifications The inspector reviewed welder and NDE Personnel Qualifications, and determined them to meet the requirements of ASME and ASNT-TC-1A.
The following Cherne Contracting Corporation (CCC) procedures were reviewed and found to meet NRC requirements.
Typical-01-3, General Instructions for Field Installation of a.
2" Anchor Bolt s.
b.
Typical-01-4, General Instructions for Field Installation of 1 3/d" Anchor Bolts.
The f ollowing records of column base holes were reviewed and found acceptable.
OUTSIDE COLUMNS INSIDE COLUMNS Column No.
Fecord No.
Hole No.
Column No.
Record No.
Hole No.
1-0 1 Typ. 01-4
1-I 1 Typ. 01-3
2
2
3
2-I 3 Typ. 01-3
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4
2-0 5 Typ. 01-3
3-I 5 Typ. 01-3
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2 3-0 7 Typ. 01-3
4-1 7 Typ. 01-3
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4-0 9 Typ. 01-4
5-I 9 Typ. 01-3
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11
6-I 11 Typ. 01-3
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12
5-0 13 Typ. 01-4
7-I 13 Typ. 01-3
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14
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8-I 15 Typ. 01-3
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16
6-0 17 Typ. 01-4
9-I 17 Typ. 01-3
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19
10-1 19 Typ. 01-3
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20
7-0 21 Typ. 01-4
11-1 21 Typ. 01-3
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12-I 23 Typ. 01-3
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24
8-0 25 Typ. 01-3
13-I 25 Typ. 01-3
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26
9-0 27 Typ. 01-3
14-1 27 Typ. 01-3
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OUTSIDE COLUMNS (cend INSIDE COLUMNS (cont)
Colurnn No.
Record No.
Hole No.
Column No.
Record No.
llole No.
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2 10-0 29 Typ. 01-3
15-I 29 Typ. 01-3
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11-0 31 Typ. 01.3
16-1 31 Typ. 01-3
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1 12-0 33 Typ. 01-3
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13-0 35 Typ. 01-4
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4 14-0 39 Typ. 01-4
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15-0 43 Typ. 01-3
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16-0 45 Typ. 01-4
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REPORT DETAILS Section 11 ('0p Prepared by:Y N. fackiw
/4/7G Reviewed by:
W.
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f(Dafe)
1.
Persons Contacted No personnel, other than those listed under the Management Interview section of this report were contacted.
2.
Torus Support Design Changes The inspector reviewed the licensee's design change records per-tasaing to the contaimaent torus support structure.
- The following items wcre reviewed:
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a.' Design Change 76M004-A '*Lrilling of Ancho'r Bolt 11 oles in
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Column Ease Plates."
(1) The completed package was reviewed and all followup action was completed on June 8,1976.
(2) The safety evaluation was performed by NSP and NUTECH.
(3) The Cherne Contracting Company installation procedure
" Anchor Bolt llole Saving" was reviewed by the operations committee on March 3, 1976.
(4) Master checklists for 2" and 1 3/8" rock anchors were reviewed.
No discrepancies were noted.
b.
Design Change 76M004-B " Core Drilling Rock Bolt Ecles."
(1) This change was covered by work request authorization WRA 76-397.
(2)
Installation procedure " Core Drill Holes for Installation of 2 " Rock Anchors" was used for this activity.
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Design Change 76M004-C " Installation of Torus Support Column Reinforcement."
(1) Approved Procedures and checklists w-re used for per-forming this design change.
(2) Hold points were signed off by Cherne Contracting Company inspectors.
(3) Final review of the design change was perfonned and documented by Cherne personnel.
d.
The inspector reviewed a letter dated May 20, 1976, which stated that Cherne Contracting Company and Northern States Power reviewed all records associated with design change 76M004A-C.
During review of records for the field installation of the c.
torus supports the inspector confirmed the following:
(1) Nonconformance reports (NCR) were handled in accordance with approved Cherne Company procedures.
(2) Magnetic particle examinations were conducted by Peabody
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Testing using approved procedures and qualified personnel.
(3) Welding checklists included welder identification and filler metal identification.
(4) A certificate of compliance dated March 25, 1976, pro-vided mill test data for the 1 3/8" and 2" William Form Engineering Corporation bolts.
3.
Drywell to Torus Differential Pressure At the time of the inspection the inspectors confirmed that the drywell to torus differential pressure was at 1.15 psi.
The inspectors also reviewed a recorder strip chart of the differ-ential pressure for a two week period. No discrepancies were noted.
Attachment:
Inspection of Torus Support Structure, Monticello l
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