IR 05000266/1978016
| ML20027A547 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 11/16/1978 |
| From: | Danielson D, Yin I NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20027A546 | List: |
| References | |
| 50-266-78-16, NUDOCS 7812210131 | |
| Download: ML20027A547 (4) | |
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i U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-266/78-16
Docket No. 50-266 License No. DPR-24 Licensee: Wisconsin Electric Power Company 231 West Michigan Milwuakee, WI 53201
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Facility Name:,. Point Beach Nuclear Plant, Unit 1
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Inspection At:
Point Beach Site, Two Creeks, WI Inspection Conducted:
October 12-13, 1978 lbi Inspector:
I. T. Yin
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Approved BY:
D. H. Danielson, Chief
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Engineering Support Section 2
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Inspection Summary Inspection on October 12-13, 1978 (Report No. 50-266/78-16)
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Areas Inspected: Surveillance of safety related pipe snubbers including:
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(1) review of program and procedures, (2) observation of hardware conditions, and (3) review of records. The inspection involved a
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total of 11 inspector-hours onsite by one NRC inspector.
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Results: No items of noncompliance or deviations were identified.
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DETAILS Persons Contacted Principal Licensee Employees
- G. A. Reed, Manager, Nuclear Power
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L. Reimer, Project Engineer - Nuclear Projects
- J. Greenwood, Assistant to Manager
- T. F. Deddens Maintenance Superintendent
- F. A. Zeman, Office Supervisor l
- Denotes those attending the exit interview.
Functional or Program Areas Inspected
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1.
Procedures Review The snubber inspection requirement is documented in Technical
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Specification (TS) Paragraphs 15.3.13 and 15.4.13.
The safety related snubbers that require surveillance and testing are listed
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in Table 15.3.13-1.
The procedures that-implement the TS require-ments are:
PT R-3, " Units 1 and 2 Containment Hydraulic Hanger Inspection,"
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Rev. O, dated August 18, 1978.
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PT R-2, " Hydraulic Snubber Surveillance and Maintenance I
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Program," Rev. 2, dated May 5, 1977.
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The inspector had the following comments after review of these
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procedures-
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a.
The snubber identification numbering system needs adjustments
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and simplification. The specific problems involved were l
discussed with the licensee's Maintenance Supervisor.
This
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is an unresolved item.
(266/78-16-01)
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b.
The mat.ofacturer's established way of measuring piston rod l
extension position for the Grinnell snubbers was not in-corporated as a part of PT R-3 procedure.
This is an l
unresolved item.
(266/78-16-02)
t No items of noncompliance or deviations were identified.
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i 2.
Observation'of Installed Snubbers i
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The inspector observed the condition of the following snubbers:
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a.
HS-12:
Small leak observed at the reservoir seal.
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b.
ITE-112; (1) The design requires eight 3/4" bolts to
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hold the plate, and only seven bolts were installed,
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(2) the attachment plate warpped around the center line
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of the snubber and created 1/8" to 1/4" gaps between the i
concrete ceiling and the plate surface all around.
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Subsequent to the inspection, the licensee informed the inspector that seven bolts were sufficient for the design loading, and that the gaps will be grouted during next cold shutdown or refueling. This is an unresolved item.
(266/78-16-03)
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c.
HS-14:
(1) The snubber is marked HS-4 at the installation location, (2) the stiffness of the beam structure to which the snubber is attached may not be adequate to allow
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the/inubber to perform its intended function, (3) the f
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direction of the thermal movement judging from equipment
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installation appeared to be contrary with the design, j
(4) a small leak was observed at the elbow fitting.
Subsequent to the inspection, the licensee informed the
inspector that structural bracings will be added to the
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structure during next cold shutdown or refueling.
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is an unresolved item.
(266/78-16-04)
d.
HS-11:
(1) The stiffness of the structure beam to which the snubber is attached may not be adequate to allow the snubber to perform its intended function, (2) a small leak
was observed at the reservoir seal. Subsequent to the
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inspection, the licensee informed the inspector that the stiffness of the structure was determined to be sufficient.
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The inspector concurred with the licensee's calculation.
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No items of noncompliance or deviations were identified.
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l 3.
Records Review
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The inspector reviewed the snubber inspection records per PT R-3 procedural requirements dated November 22, 1976, and November 8, 1977,
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for Unit 1; and dated Apr1125,1977 and April 19, 1978 for
Unit 2, and had the following comments:
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a.
The measurement of the large Anker-Holth snubbers was inconsistent and not in accordance with procedural instruction.
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This is an unresolved item.
(266/78-16-05)
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r b.
There appeared to be lack of evaluation on why snubber I
cold position settings (CPS) measured during inspection differ from the original design settings, and whether or not there was a possibility that a snubber piston could reach the end of travel during system hot condition.
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This is an unresolved item.
(266/78-16-06)
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c.
There appeared to be lack of evaluation on why CPS measured
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differ from one inspection to another.
This is an unresolved
item.
(266/78-16-07)
L In regard to items b and c above, the Site Manager committed to
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remeasure the snubber CPS and HPS during plant operations and
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to establish further guidance in the maintenance procedures.
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No items of noncompliance or deviations were identified.
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Unresolved Item Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of i
noncompliance or deviations.
Seven unresolved items disclosed during i
the inspection are discussed in Paragraphs la, 1b, 2b, 2c, 3a, 3b, l
and 3c.
l Exit Interview The inspector met with site staff representatives (denoted under Persons Contacted) at the conclusion of the inspection on October 13, t
1978.
The inspector summarized the purpose and findings of the inspection.
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