IR 05000155/1977016
| ML20002E443 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 11/08/1977 |
| From: | Danielson D, Erb C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20002E442 | List: |
| References | |
| 50-155-77-16, NUDOCS 8101280050 | |
| Download: ML20002E443 (3) | |
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U.S. NUCLEAR REGULATORY COMMISSION
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OFFICE OF INSPECIl0N AND ENFORCEMENT
REGION III
Report No. 50-155/77-16 Docket No. 50-155 License No. DPR-6
' License: Consumers Power Company 212 W. Michigan Avenue
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Jackson, MI-59201 Facility Name:
Big Rock Point Nuclear Plant Inspection at: Big Rock Site, Charlevoix, MI Inspection Conducted: October 20 and 21, 1977 k/
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///I 77 Inspector:
C. M. 42bb
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Approved by:
D. H. Danielsot., Chief Engineering Support Sectic' 2 Inspection Summary Inspec_ tion on _0ctober 20 and 21,1977 (Re_yor_t No. 50-155/77-16)
Areas Reviewed: In Service inspection activities, including qualifi-cation and records, pipe hangers and snubbers; NDE records for Class :
and high energy piping; nonconformance and repair action resulting from the in service inspection; preservice inspection records for the Core Spray System modification. This inspection involved a total of 9 onsite inspector hours by one NRC inspector.
Results: No items of noncompliance or deviations were identified.
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DETAILS
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Persons Contacted Consumers Power Company (CP)
R. E. Schrader. Technical Superintendent J. P. Flynn, Operations Superintendent G. D. Gilbody, Quality Assurance Engineeer D. E. DeMoor, Technical Engineer All the above people were present at the exit interview.
. Functional or Program Areas Inspected 1.
Irservice Inspection Activities The RIII inspector reviewed inservice inspection records and area pipe restraints, hangers and mechanical seismic shock arresters.
Due to r containment leak rate test and initiation of power cycle, hardware examination was not performed by the inspector.
The reactor depressurization system (RDS), was installed a.
f utilizing mechanical shock arresters procured from Pacific
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Scientific Company. Qualification tesults for a 500 lb arrester S/N 002, Model 1801104-03 were examined. The ultimate load, acceleration arrest (.02G max) load cycling and response to environment conform to the specification requirements.
Site personnel visually examined two installed arresters during this outage. No evidence of wear, defor-mation or deterioration was observed.
b.
The following corrective action reports relating to w. ids and pipe supports requiring rework or repair were revieaed.
Number System Action D-ROP-083077-1 RCS pipe support Weld cracks, repaired D-RRS-082377-1 MRS pipe restraints Loose bolts, tighten double nuts D-RRS-092077-1 Pipe weld, emerg. cond.
Cut out, rewelded, NDE O.K.
077-111 Lug weld Approved Engineer Review A-B RP-7 7-4 10 year ISI plan Revision 3, to present Class 1 and 2 system plan (
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All corrective-actions appear to have been completed prior to starup of the plant.
Within the areas. examined, no items of noncompliance or deviations
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were identified.
2.
Modification _of Core Spray System In order to attain proper head for the core spray system pumps, two 4" valves and associated pipe were raised several feet. This involved making seven 4" welds and one 1" sockolet veld. The system is made of 4" diameter carbon steel (.437" vall thickness) pipe. The Core Spray System welds are categorized for preservice examination with six welds being Class I and four welds Class 2.
The applicable requirements for construction are ANSI B 31.1.0 and Quality Control acceptance is to ND5000 of ASME Code Section III,1974 Edition.
Welding procedure GT-1-1 was used for the root pass and SM-1-1 for completion. Pipe materials are SA106-B. Seven welders were involved
.in the modification.
The hydrotest was performed at 1485 psi and 100 F which is accept-able to Section XI.
Procedure NDT-PT-01, Revision 0, was used to penetrant test the welds. Certifications for pipe and welding
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materials are acceptable. All procedures and personnel were properly qualified to ASMI Code Section IX and SNT-TC-1A require-ments. Within the areas examined, no items of noncompliance or deviations were identified.
3.
Exit Int _erview The inspector met with licensee representatives (denoted in the Persons Contacted paragraph) at the conclusion of the insr etion on October 21, 1977. The inspector summarized the purpose and findings of the inspection. The licensee acknowledged the fipdings as reported.
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