ML20096F539
| ML20096F539 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 08/16/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-256, REF-PT21-84, REF-PT21-85-037-000 80, DDR-780, PT21-85-037-000, PT21-85-37, NUDOCS 8409100101 | |
| Download: ML20096F539 (4) | |
Text
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1, PRP COAL
- '" cop-Carolina Power & Light Company Nu muuuuummu
. C.^ f5 2 P.O. Box 101,.Ne H August 16, 1984 s
Mr. James P. O'Reilly NRC-256 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest'(Suite 2900)
Atlanta, Georgia 30323 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 PRESSURE SENSING LINE IN THE STARTING AIR SYSTEM FOR EMERGENCY STANDBY DIESEL-GENERATOR SETS, PURCHASE ORDER NY-435079, ITEM 80
Dear Mr. O'Reilly:
Attached is the final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e), on April 19, 1982.
W1th this report, Carolina Power & Light Company considers this matter closed.
If you have any questions regarding this matter, please do not hesitate to contact me.
Yours very truly, M MMM R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/ jam ~
Attachment cci Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
Mr. R. C. DeYoung (NRC)
'8409100101 e40816 PDR ADOCK 05000400 g
PDR OFFICIAL COPY
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1 CAROLINA POWER-& LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO. 1-FINAL REPORT PRESSURE SENSING LINE IN THE STARTING AIR SYSTEM FOR THE EMERGENCY STANDBY DIESEL ENGINE GENERATOR SETS ITEM 80 (DDR 870)
AUGUST 17, 1984 REPORTABLE UNDER 10CFR50.55(e) o
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SUBJECTS
. Shacran HSrris Nuclssr Powar Plant Unit No. 1
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110CFR50.55(e) L reportable. deficiency concerning a -
potential problem with the' pressure sensing lines-in
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- the; starting air systems for.the Emergency. Standby _
Diesel: Engine Generator Sets supplied by'Transamerica DeLaval, Inc., under1 Purchase Order NY-435079.
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ITEM:-
iThe pressure' sensing line between the starting. air storage ' tank manual isolation. valve and1 pressure switch mounted on;the starting air compressor for the
- Transamerica DeLaval Inc.' Standby Diesel Engine
. Generators: -Model1No.-DS RV-16-4.
SUPPLIED BY:
The manual isolation"va'1ves, compressors, and air tanks.are supplied by Transamerica DeLaval, Inc.,
Oakland, California.
The sensing line is furnished:
- and installed by CP&L in accordance with the design documents generated by.Ebasco' Services, Inc.
' NATURE OF
- DEFICIENCY:
In a letter dated March 24,.1982,- Transamerica DeLaval notified CP&L that in the event of a pressure sensing line failure during a seismic event, the starting air pressure.could bleed down to 150 psig in a' minimum of six minutes. Tne engine will not automatically start when the starting. air pressure-is-less than 150 psig.
DATE PROBLEM OCCURRED:
Refer to section above.
DATE PROBLEMJ
. REPORTED:
April 19,.1982 - CP&L (N. J. Chiangi) notified the NRC (Region II - C. Julian) that this item was-reportable under 10CFR50.55(e). Transamerica DeLaval reported this to the NRC under 10CFR, Part 21 on March'19, 1982.
4 SCOPE OF PROBLEM:
Upon objective review of the design documents, it was-determined that this. potential problem does not affect the-SHNPP diesel generator sets.-
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SA7ETY IMPLICATION:'
The Emergency Standby Diesel Engine-Generator. Sets supply power co the. emergency safety' features buses-in the event of a loss of normal on-site and off-site
. power: sources. The pressure sensing line is Seismic Category.I and should not fail during a seismic event..
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1 3 _.j REASON DEFICIENCY IS This. item was not reportable since the sensing line REPORTABLE:
is Seismic Category I,
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CORRECTIVE ACTION:
Transamerica DeLaval had recommended the installation of an 1/8" restrictive orifice between the manual isolation valve and the starting air tank..which would increase the time to reach 150 psig to 53 minutes if the sensing line failed.
This orifice will not be installed since the sensing line used at SHNPP is Seismic Category I and should not fail.
during a seismic event.
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