ML20050D406

Submits Addl Info Re Environ Qualification Testing of Igniters to Be Used in Hydrogen Ignition Sys

ML20050D406
Person / Time
Site:	Grand Gulf
Issue date:	04/08/1982
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
AECM-82-37, NUDOCS 8204120182
Download: ML20050D406 (2)

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MISalSSIPPI POWER & LIGHT COMPANY Helping Build Mississippi EmlWIMidE P. O. B O X 16 4 0, J A C K S O N , MlSSISSIPPI 39205 April 8, 1982 NUCLEAR PHODUCTloN DEPARTMENT g g.

U. S. Nuclear Regulatory Commission ,

Office of Nuclear Reactor Regulation N -

Washington, D. C. 20555 9 . M 2 , g q "} I Attention: fir. Ilarold B. Denton, Director _,

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Dear fir. Denton:

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SUBJECT:

Grand Gulf Nuclear Stati TjQ' Units I and 2 Docket Nos. 50-416 and 50-417 File L-860.0/0756 References 1) AECM-81/336

2) AECM-82/60 Environmental Qualification Test Program AECM-82/137 This letter is in response to a recent verbal request by members of your staff for supplementary information regarding the environmental qualification testing of igniters which will be used in Mississippi Power & Light's (MP&L) llydrogen Ignition System at the Grand Gulf Nuclear Station. As indicated in reference 1, it is our intent to qualify the igniters to IEEE 344-1975 and IEEE 323-1974 requirements. Additional tests are also planned to demonstrate that the igniters will remain functional under adverse environmental conditions postulated during a hydrogen generation event.

The igniter testing program consists of a sequence of tests as laid out below. The submergence test consists of immersing the igniters in water with the same conductivity, pil, dissolved solids and temperature as the suppression pool. The igniters will then be tested to assure that they remain functional.

The ability of the igniters to withstand repeated hydrop,en burns will be demonstrated in a final test. Operability of the igniters will again be demonstrated after this test. An approximate schedule for the complete environn. ental qualification testing program is included below:

Test Time Required Completion Date Radiation Testing (Beta & Gamma) 2 weeks 03/08/82 Thermal Aging 10 weeks 05/17/82 Wear Aging 2 weeks 05/31/82 Seismic & Functional Tests 2 weeks 06/14/82 l Submergence Test 2 weeks 06/28/82 l LOCA Sirulation 3 weeks 07/19/82 i llydrogen Burn 3 weeks 08/09/82 l

600I.s lD 8204120182 820408 PDR ADOCK 05000416

! A PDR .. ...~. Middle South Utilities System

AECM-82/137

1. E MIS 2ISSIPPI POWER O LIGHT COMPANY Picase note that the environmental qualification testing program is separate from the proposed suppression pool tests discussed in reference 2. The testing discussed in reference 2 is not required for the environmental qualification of the igniters.

Yours truly, 7

/

L. F. Dale Manager of Nuclear Services RWE/ Sill!/.IDR:lg cc: Mr. N. L. Stampley Mr. R. B. McCchee Mr. T. B. Conner Mr. G. B. Taylor Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 M r . .I . P. O'Reilly, Regional Administrator Office of Inspection & Enforcement U. S. NucIcar Regulatory Commission Region II 101 Marietta St., N. W. Suite 3100 Atlanta, Georgia 30303 1

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