ML18082A474
| ML18082A474 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 05/13/1980 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Schneider F Public Service Enterprise Group |
| References | |
| NUDOCS 8005280113 | |
| Download: ML18082A474 (3) | |
Text
Docket No. 50-272 5().;..311 UNITED STATES *.
e fHJCLEAR REGULATORY COMMISSION REGION I 631 PARK AVENUE KING OF PRUSSIA;PENNSYLVANIA 19406 May. 13, 1980 Public Service Electric and.Gas Company ATTN:
Mr. F. W. Schneider Vice President - Production 80 Park Place Newark, New Jersey 07101 Gentlemen:
~~
The enclosed IE Circular No. 80-11, 11Emergency Diesel Generator Lube Oil Cooler Failures," is forwarded to you for information.
No written response is required.
If you desire additional in.formation regarding this matter, please contact this office.
Enclosures:
- 1.
IE Circular No. 80-11
- Sincerely,
,~~--ff~
Boyce H. Grier
.Director 2-List of Recently Issued IE Circulars h
CONTACT:
W. H. Baunack (215-337-5253) cc w/encls:
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\\
- r
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F. P. LibrizziJ General Manager - Electric Production E. N. Schwalje, Manager - Quality Assurance*
R. L. Mittl, General Manager - Licensing and Environment H. J. Midura, Manager -
Salem Generating Station I
I
ENCLOSURE 1 UNITED. STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C. 20555 SSINS No.: 6830 Accession No.:
8002280662 tE Circular No.. 80-11 Date:
May 13, 1980
- Page 1 of 1 EMERGENCY.DIESEL GENERATOR LUBE OIL COOLER FAILURES Description of Circumstances:
Within a two week perfod (August 27 to September ll, 1979), the tube sheets failed in the lube oil coolers of both emergency diesel generators for Arkansas
- Nuclear One (ANO) Unit No. 1. The introduction of water into.the diesel lube oil system resulted in trips of both diesels during surveillance testing.
The diesels were not considered capable of sustained operation. These events were previously identified to all operating license and construction permit holders by Information Notice 79-2.3, Emergency Diesel Generator Lube Oil Cooler on September 25, 1979.
The emergency diesel *generators involved were manufac-tured by the Electro-Motive o*ivision (EMO) of the General Motors Corporation and the failures occurred on engines 71-Al-1117 and 71~Al-1130. The failed lube oil coolers were manufactured by the Young Radiator Company.
An analysis of the failed coolers performed by EMO resulted in the conclusion that the.f ai 1 ures were caused by severe corrosion of the so 1 der which.sealed the tubes to the tube sheets. The corrosion inhibitor* in use at ANO was Calgon CS, a borate-nitrite type inhibitor.. The manufacturer of this type of inhibitor has recommended the use of hard solder in CS treated systems.
EMO does not recommend the use of Calgon CS since the puddle solder used in EMO radiators
- and oil coolers is considered to be soft sol~er of a lead-tin composition.
Recommended. Action for Li ce.nsees' Consideration:*
Based on the above, it is recommended that licensees:
- l.
Verify that the corrosion inhibitor used in cooling water systems of the emergency diesel generators is compatible with all materials wetted by the cooling water and the engine manufacturer 1s specific recommendations.
Also, by means of the engine maintenance history, verify that the system corrosion inhibitor has been properly monitored and maintained at the recommended concentration.
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- 2.
If ltem 1 cannot be successfully performed, the affected components should be inspected in accordance with the manufacturer's recommendations.
No written response to this Circular is required.
If. you desire additional information regarding this matter, contact the Director of the appropriate NRC Regional Office.
Circular No.
79-25 Supplement A 80-01 80-02 80-03 80-04 80-05 80-06 80-07 80-08 80-09 80-10 ENCLOSURE 2 IE Circular No. 80-11 Date:
May 13, 1980 Page l of 1 RECENTLY.ISSUED IE CIRCULARS Subject Shock Arrestor Strut Assembly Interference Service Advice for GE Induction Disc Relays Nuclear Power -Plant Staff Work Hours Protection from Toxic Gas Hazards First Date of Issue
.1/31/80 1/17/80 2/1/80.
3/6/80 Securing Threaded Lack-3/14/80 ing Devices on Safety-Related* Equipment Emergency Diesel Gen-4/1/80 erator Lubricating Oil Addition and Onsite Supply Control and Account-4/14/80 ability Systems for Implant Therapy Sources Problems with HPCI 4/3/80 Turbine Oil System BWR. Technical Speci-4/18/80
- fication Inconsis-tency - RPS Response Time Issued To*
All Power Reactor Facil-ities.with an Operating.
License. (OL) or Construc-tion Permit (CP)
.A 11 Power Reactor Faci 1-it i es with an OL or CP All Power and Research Reactors ~ith an OL or CP All Power Reactor Facil-iti~s with an OL All Power Reactor Facil-ities with an OL or CP All Power Reactor Facil-ities with an OL or CP Medical Licensees in Categories G and Gl All Power.Reactor Facil-ities with an OL or CP All General Electric BWRs holding a power reactor OL Problems with Plant Internal 4/28/80 All holders of a Communications Systems reactor OL or CP Failure to Maintain Environmental Qualification of Equipment All Power Reactor Facilities wth an OL or CP