IR 05000317/1979012
| ML19254E382 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 09/06/1979 |
| From: | Caphton D, Foley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML19254E381 | List: |
| References | |
| 50-317-79-12, 50-318-79-09, 50-318-79-9, NUDOCS 7911010015 | |
| Download: ML19254E382 (7) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT Region I 50-317/79-12 Report No. 50-318/79-09 50-317 Docket No. 50-318 DPR-53 License No. OPR-69 Priority
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Category c
Licensee:
Baltimore Gas and Electric Company BG&E Building Baltimore, Maryland
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Facility Name:
Calvert Cliffs Nuclear Power Plant Units 1 & 2 Inspection at:
Lusby, Maryland Inspection conducted: July 16-19,1979 Inspectors:
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F/27 7f T. Foley, React 6FInspector dite signed date signed date signed Approved by:
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D. L. Caphton,'/ Chief, Nuclear Support Section dite/ signed No. 1, RO&NS Branch Inspection Summary:
Inspection on July 16-19,1979 (Combined Report Nos. 50-317/79-12 and 50-318/79-09)
Areas Inspected:
Routine, unannounced inspection by a regional based inspector of pipe supports and restraint systems surveillance. The inspection involved 27 inspector-hours onsite by one NRC regional based inspector.
Results:
No items of noncompliance were identified.
1281.T Region I Form 12 (Rev. April 77)
.7911010
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DETAILS 1.
Persons Contacted The technical and supervisory level personnel listed below were contacted.
- M. Bowman, Supervisor QA Audit Unit
- R. Denton, Nuclear Plant Engineer - Operations
- R. Heibel, Performance Engineer
- J. Lemons, General Foreman - Nuclear M. Miernicki, Performance Engineer
- L. Russell, Chief Engineer T. Sydnor, Performance Engineer K. Tietjen, Technical Specialist The inspector also interviewed other licensee personnel during the course of this inspection including maintenance and quality assurance personnel, members of the technical and administrative staff.
- denotes those present at the exit interview.
2.
Licensee Action on Previous Insoection Findings (Closed) Unresolved Item (317/78-25-06 and 318/78-19-06):
The licensee currently has procedure STP-074-2 Engineering Safety Feature Equ'pment Inservice Bearing Temperature Test, Revision 2 which incorporates the necessary controls required by Article IWP-3500 of ASME Section XI to ensure that bearing temperatures have stablized.
This item is closed.
(Closed) Unresolved Item (317/78-25-08 and 318/78-19-08):
The licensee currently has revised the STP-0-66 Quarterly Valve Operability Verifica-tion series of procedures to incorporate the required change in test frequency as stated in IWV-3410(c)(3) of ASME Section XI.
The licensee has also established a Valve Leakage Trend Log which is being used to help evaluate valve leakage.
This item is closed.
(Closed) Unresolved Item (317/78-25-09 and 318/78-19-09):
The current revision of STP-0-66 Quarterly Valve Operability Verification series of procedures has established individual valve leak rate acceptance criteria, alert limits and action limits as required by IWV-3420 of ASME Section XI.
This item is closed.
(Closed) Unresolved Item (317/78-25-10 and 318/78-19-10):
The licensee has established a Valve Leakage Trend Log which is used to compare leakage with previous test results.
The STP-0-66 Quarterly Valve 1281.7 '
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Operability Verification procedures contain requirements for making comparisons with previous test results as required by Article IWV-3420 of ASME Section XI.
This item is closed.
(0 pen) Unresolved Item (317/78-25-05 and 318/78-19-05):
The licensee's procedures have been revised to incorporate new raference values for pump parameters; however, no provisions have been incorporated for re-confirming previous values after maintenance or repair as required by Article IWP-3111 of ASME Section XI.
The licensee's representative stated that the requirements of IWP-3111 would be incorporated into the appropiate procedure by January 30, 1980.
This item remains open.
(0 pen) Unresolved Item (317/78-25-11 and 318/78-19-11):
The licensee's procedure for visual inspection of hydraulic snubbers has not been revised to incorporate a piston measurement and acceptance criteria that would ensure that the snubber has room for thermal growth without hitting the mechanical stops.
The licensee's representative stated that a piston measurement would be incorporated into their surveillance procedures by January 30, 1980.
This item remains open.
3.
Pipe Support and Restraint Surveillance
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a.
Documents Reviewed The inspector reviewed the following procedures and records relating to pipe support and restraint surveillances to determine compliance with regulatory requirements.
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STP-M-670-A-1, " Snubber Inspection (Accessible)", Unit 1, Revision 1, with data completed November 10, 1978.
STP-M-670-A-2, " Snubber Inspection (Accessible)", Unit 2,
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Revision 2, with data completed May 30, 1978.
STP-M-271-2, " Surveillance of Reservoirs; Snubber Inspection
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Visual", Revision 0 with data completed January thru June 1979.
STP-M-670-8-1, " Snubber Inspection (Inaccessible)", Unit 1,
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Revision 2, with data completed January 8,1979.
STP-M-670-B-2, " Snubber Inspection (Inaccessible)", Unit 2,
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Revision 3, with data completed January 26, 1979.
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STP-M-570-1, " Snubber Functional Test", Unit 1, Revision 3,
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with data completed May 22, 1979.
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STP-M-570-2, " Snubber Functional Test", Unit 2, Revision 4, with data completed October 13, 1978.
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Letter from Bechtel Power Corporation to Mr. R. E. Ash, Baltimore Gas and Electric Company, dated October 14, 1978.
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Preventive Maintenance Card 1-65-M-M-1, " Remote Common Snubber Reservoirs (Inside Containment in High Radiation Areas)".
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Preventive Maintenance Card 1-65-M.1-2, " Remote Common Snubber Reservoirs (Inside Containment)".
Technical Support Procedure No. 24, " Hanger Inspection;
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Concrete Anchors", Revision 6.
Baltimore Gas and Electric Company Program for Nondestructive
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Examination NDE 5.702, " Visual Exmaination of Pipe Systems and Attached Components", Revision 5.
Maintenance Procedure SNUB-4, " Disassembly, Overhauling and
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Pre-testing of Grinnell Hydraulic Snubbers", Revisinn 0.
Maintenance Procedure SNUB-1, " Overhaul and Testing of
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Grinnell Hydraulic Snubbers", Revision 3.
With the exception of the items listed below, the inspector identified no significant problems.
(1) During the review of STP-M-570-1 and 2, " Snubber Functional Test", procedures for Units 1 and 2, the inspector noted that the acceptance: criteria t. sed in the setting of snubber lock-up and bleed rate velocicies do not account for the difference in temperature between the operating environment and testing conditions.
The licensea's representative stated that an evaluation would be performed by January 30, 1980 to determine what effect this difference in temperature might have on the installed snubbers.
This item is unresolved (317/79-12-01 and 318/79-09-01).
(2) Checking for snubber leakage is required by technical specifications.
The surveil bnce inspection procedures
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reviewed above do not specify what is required on the data sheets regarding snubber fluid leakage.
Personnel recording, e.g. fluid leakage data do not record data in an apparent uniform manner.
Determining whether or not, snubbers are leaking appears confusing.
This item is unresolved (317/79-12-02 and 318/79-09-02).
(3) Reviewing NDE-5.709, " Visual Examination of Piping Systems and Attached Components", the inspector noted that support settings of constant and variable tyoe spring hangers and snubbers appeared not to be verified as required by Article IWB-2500 B-K-2 and IWC-2520 C-E-2 of ASME Section XI.
The inspector also questioned whether all class 2 and 3 snubbers were being visually examined.
The licensee's representative stated that a review had taken place to ensure all class 2 and 3 snubbers were incorporated into the technical specifica-tion program for snubber surveillance.
The results of that review were not available to the inspector prior to the exit interview.
This is an unresolved item (317/79-12-03 and 318/79-09-03).
b.
Licensee Review of Completed Data During the review of STP-M-6708-1, " Snubber Inspection, (Inaccess-ible)", the inspector noted that 3 snubbers appeared not to have been checked for piston rod damage, however, further discussions with the licensee's representatives revealed that the data was checked but not transferred from the contaminated working copy to the final data sheet.
The licensee's revir., process failed to identify this discrepancy.
Other procedures were checked by the inspector for similar discrepancies, however we e found to be performed adequately.
The inspector noted no other inadequacies and the subject surveillance procedure was corrected prior to the exit interview.
c.
Snubber Overhaul The inspector witnessed the disassembly cleaning, replacement of seals and reassembly of three hydraulic snubbers at various times during the inspection.
The overhaul was performed by qualified personnel using approved procedures, and quality control personnel were present witnessing steps in the procedure.
The inspector noted that snubber clevis fittings were belrg cleaned with the use of solvent.
The inspector questioned i1 this would destroy the life-time lubricant provided on Grinnell snubber clevis 1281
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fittings.
The licensee's representative stated they would determine the type of solvent being used and what effect it has on the Grinnell lubricant, and will incorporate a program for greasing fittings if it is determined that the need exist.
The inspector had no further questions at this time.
4.
Plant Tour The inspector accompanied the licensee's representative on tours of accessible plant areas including; the Auxiliary Building, Turbine Building, Service Water Area, and the Spent Fuel Area.
The inspector selected a random sampla of snubbers, fixed and variable pipe supports, and component support structure.
This sample was then examined and compared to design drawings.
Support settings of hangers and snubbers were verified to conform with the component.
All components observed were set between the specified hot and cold set points.
The inspector performed independent measurements and observed the general conditions of support components including hangers, clamps, braces, brackets, turnbuckles, lugs, clevis and support base plates, and visually verified the following:
No evidence of corrosion, cracks or other detrimental indications.
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No observable deformation.
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Nuts, bolts and fasteners were secure.
Support settings were witLin the designated bands.
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Chaffing with other components was not observed to result from
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pipe movement due to thermal growth.
The inspector noted that the reservoir support for snubber 1-83-32 appeared to not be installed correctly in that the support bracket was not attached to any foundation.
This item is unresolved (317/79-12-04).
5.
Unresolved Items Items about which more information is required to determine acceptability are considered unresolved.
Paragraphs 3 and 4 of this report contain unresolved items.
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Exit Interview At the inspection's end, the inspectors held a meeting (see Detail 1 for attendees) to discuss the inspection scope and findings.
The unresolved items were identified.
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