ML20215G090

Advises That Control Room Modified by Installing New Carpet. Use of Carpeting in Control Room Recommended by NUREG-0700, Guidelines for Crdr. Certification of Carpeting Installed Encl

ML20215G090
Person / Time
Site:	Fort Calhoun
Issue date:	10/10/1986
From:	Andrews R OMAHA PUBLIC POWER DISTRICT
To:	Sells D Office of Nuclear Reactor Regulation
References
RTR-NUREG-0700, RTR-NUREG-700 LIC-86-509, TAC-63144, NUDOCS 8610170025
Download: ML20215G090 (4)

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Omaha Public Power District 1623 Harney Omaha. Nebraska 68102-2247 402/536 4000 October 10, 1986 LIC-86-509 Mr. D. E. Sells, NRC Project Manager PWR Project Directorate #8 Division of PWR Licensing - B U. S. Nuclear Regulatory Commission Washington, DC 20555

References:

1. Docket No. 50-285

2. NUREG-0700, " Guidelines for Control Room Design Review."

3. APCSB 9.5-1 Appendix A, " Guidelines for Fire Protection for Nuclear Power Plants Docketed Prior to July 1, 1976."

4. ASTM E-84 Test, " Surface Burning Characteristics of Building Materials."

5. NFPA 101, " Code for Safety to Life from Fire in Buildings and Structures."

6. ASTM E-648/NFPA 253, " Critical Radiant Flux of Floor Covering Systems."

Dear Mr. Sells:

Control Room Carpeting for the Fort Calhoun Station 07aaha Public Power District has modified the control room at Fort Calhoun Station by installing new carpet. The use of carpeting in the control room is recommended by Reference 2. Because OPPD is committed to Reference 3, we intended to procure cai peting in accordance with Refnence 3, Sect ion 9.1. (d),

which states that interior finishes should be non-combustible or listed by a nationally recognized laboratory for flame spread, smoke and fuel contribution of 25 or less in its use configuration as determined by Reference 4. However, per discussions with carpet manufacturers, carpet testing per Reference 4 produces unreliable results.

The National Fire Protection Association has recognized that carpet testing requires a special test. NFPA has established Reference 5 which adopts a minimum of 0.45 watts per square centimeter as an acceptabl ..easure of critical radiant flux for Class I interior floor finishes. This measurement is made in accordance with Reference 6. Because this standard is different than that specified by Reference 3, OPPD discussed the use of Reference 6 with Mr. Kubicki of the NRC staff. Mr. Kubicki concurred with our use of Reference 6, stating that we should document this in a letter to the NRC. Accordingly, this letter is being sent. The certification of the carpeting that is installed in the control room has been included as Attachment I to this letter. .

8610170025 861010 PDR P

ADOCK 050002R5 PDH l . f' ['s 455t24 Employment with Equal Opportunity Male Female

Donald E. Sells LIC-86-509 Page 2 We hope this information is sufficient to satisfy your needs. If you have any further questions concerning this matter, please contact us.

Sincerely, aJ R. L. Andrews Division Manager Nuclear Production RLA:rge

Attachment:

Independent Textile Testing Service, Inc., Test Report #2114 on Colonnade Pacesetter Carpet cc: LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Ave., N.W.

Washington, DC 20036 R. D. Martin, NRC Regional Administrator P. H. Harrell, NRC Senior Resident Inspector I

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CUSTOMER: Collins & Aikman Corporation , August 19, 1983

SUBJECT:

Specimens of the submitted samples w'ere prepared and tested in accordance with ASTM E-648 and/or Federal Test Method 372 dated August 31,1977.

NFPA 253 ,

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FLOORING RADIANT PkNEL TEST U

i Sample Description - v- - i Style: 11019 Dacesetter RT #255 i .

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Test Assembly i~

Mounted on Transite j ..,

I Test Results Specimen No.~ 1 Specimen No. 2 Specimen No. 3 Critical Radiant' Flux: .61 watts /cm2 .57 watts /cm2 .59 watts /cm2 Total Burn Length: 34.0 cm. 36.0 cm. .35.0 cm.

• Flame Front Out: 45.0 minutes 50.0 ' minutes 53.0 minutes l . 2.

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Amene Criner Nw . E- watts /cm2 . 1 -

r Estimated Standard Deviation .02 watts /cm2 ,

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.03 Coe[ficient-obar.iation- ,

Independent Textile Testing Service .

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INDEPENDENT TEXTILE TESTING SERVICE, INC.

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- REPORT -

CUSTOMER: Collins & Aikman Corporation August 8, 1983

SUBJECT:

Specimens of the submitted samples were prepared and forted in accordence with the procedures proposed by the National Bureau of Standards, Technical Note 708 a..d NFPA 258-T-1974 SMOKE DENSITY TEST (NBS)

Operating Conditions R diometer Reading: 7.7 mv; Irradiance: 2.5 watts /cm2: G Factor: 132 Thermal Exposure: F1aming Fumace Yoltage: 104a. .

Burner Fuel: P ropane I\

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Sample Description -

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Test Results #1 #2 #3 Avg.

Chamber Temperature; T. (start) 95 95 95 Chamber Pressure Maintained positive, under 3" M.O Min. Transmittance (TM), % 4f4 40% 4o;;

ct, minutes __11.90 11.60 10.30 ll.30 Mar. Spec. Opt. Density (DM) 177 185 185 182 Clear Beam,(DC) 16 20 18 18 DM, corrected (DMC) _161 165 167 164 Spec. Opt. Density at 1.5 min. 98 113 _105 105 Spec. Opt. Dens *rty et 4.0 min. 132 154 _

1w 160 Time to 70% Dt/., minis,s _ 7 . 3.^- 7 e, . 6- - . . _.. . i. d . .

1.00 .90 1.00 ,.:6 Time to DS = 16, minutes i - - -

Initial Weight, grams I m ::~.--. .

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