ML20138R829
| ML20138R829 | |
| Person / Time | |
|---|---|
| Issue date: | 10/22/1985 |
| From: | Arlotto G NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Speis T Office of Nuclear Reactor Regulation |
| References | |
| CON-FIN-A-1051, RTR-NUREG-CR-3538 NUDOCS 8511190086 | |
| Download: ML20138R829 (1) | |
Text
DISTRIBUTION w/;ncl: ,
JPKnight,D/DE/NRR RLaGrange, EQB/NRR i ZRosztoczy, RSCB/NRR RCleveland,RSCB/NRR RMinogue GArlotto OCT 2 21985 BMorris WFarmer NRC PDR RES Files EEICB/subj A1051 EEICB/rdg MEMORANDUM FOR: Themis P. Speis, Director Division of Safety Technology Office of huclear Reactor Regulation FROM: Guy A. Arlotto Director Division of Engineering Technology Office of Nuclear Regulatory Research
SUBJECT:
EQUIPitENT QUALIFICATION RESEARCH TEST WITr! ANACONDA FLANE GUARD FR-EP CLASS IE ltULTICONDUCTOR CABLE In 1933 the NRC Qualification Testing Evaluation Research Program at Sandia i
National Laboratories used Anaconda Flame Guard Qualified Cable in a research test using a qualification test sequence involving the simultaneous thermal and radiation aging and simultaneous accident radiation and LOCA simulation testing of single and multiple conductor ethylene propylene rubber insulated cables purchased from several cable manufacturers as Class 1E qualified cable.
The EPR D (Anaconda Flame Guard) multiconductor cable exhibited large leakage
- currents after 15 days into the post-LOCA-transient period and the insulation was found in the post-test examination to have cracked and peeled away exposing the bare wires. The test results were reported in NOREG/CR-3538, "The Effect of LOCA Simulation Procedures on Ethylene Propylene Rubber's Hechanical and Electrical Properties." Saturated steam was used in i replicating the accident temperature profile in these initial tests. The l Equipment Qualification Branch of the Office of Nuclear Regulatory Research j requested that the EPR D be retested using superheated steam in the test.
i This superheated steam test was recently completed and the Anaconda Flame i Guard qualified cable exhibited as before high current leakage after 19 to 21 days into the post-LOCA-transient period and the cable insulation was found to have split exposing the bare ccaductors. A Quick Look Report, dated October 17, 1985, reporting the preliminary results of the Superheated-Steam Cable
,- Test is enclosed. My staff and that of the contractor (Sandia National
- , Laboratories) are available to assist your office as needed in evaluating the
- test results for safety significance.
l Original signed by G. A. Arlouo L
8511190086 851022 # *
- W PDR MISC Division of Engineering Technology 8511190086 PDR Office of kuclear Regulatory Research t
Enclosure:
As stated i
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