ML20091Q847

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Fire Resistance Testing of Fire Resistant Cables
ML20091Q847
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 02/17/1984
From:
VTEC LABORATORIES, INC.
To:
Shared Package
ML20091Q834 List:
References
NUDOCS 8406140178
Download: ML20091Q847 (20)
v • d • e


Text

Enclosure 2 VTEC LABORATORIES INC.

540 FMLE STREET BRONX, N.Y. 10474

-Feb. 17, 1964 212 542-8244 Client: 2e Rockbestos Company New Haven, Ct 06504 Attn: Mr. John E. Meras 1.0 Subject Fire Resistance testin6 of fire resistant cables.

Rose tests were conducted on Jan.16 and Jan. 17, 1964 on the small 3 ft X 3 ft furnace, in accordance with the ASDt E119 time-temperature curve. Bis standard should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or l appraise the fire hazards or fire risks of materials, products or 1

l assemblies under actual fire conditions. However, results of this test l may be used as elements of a fire risk assessannt, which takes into

. account all of the factors which are pertinent to as assessment of fire hazard of a particular end use.

2.0 Procedure he furnace used in this test measures 3 ft X 3 ft X 3 ft. Se outside construction is steel and the furnace is lined with a ceramic refractory insulation. Se furnace dimensions inside the insulation are no=4=11y 27 in X 27 in X 27 in. A single burner is centered vertically in the unl1 opposite the sample. Bis burner is rated for 15 million Btu /hr 8406140178 840609 PDR ADOCK 05000289 F PDR morsos: vrac s - ina we am me uma ser en, mas e esse, peawane nem em use e me men m gue essen, m emase e em m.eme6 two neen senema m ee same= =ess enes.

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h ble of Contents Section Page 1.0 Subject i 2.0 Procedure i 1

30 General Description 2 i

31 Moctrical Connections 3 ,-

4.0 Resulta 4 50 Conclusion 5 6.0 - Appendix 6 6.1 Witnessing Personnel 7 6.2 Time-haperature Curves for Furnace 8

. 6.3 Roctrical Connection Schematics 10 I

! - 6.4 Photograph Description Sheet 12 6.4.1 Photographs 13 6.5 Certificates 15 i

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i Fire Testing of Fire Ros!stant (hbles the Rockbestos Company .

VTEC Project 100-021 February 17,19%

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2 l and is of the flat flame or non-impinging fisas design. Furnace l conditions are monitored by three Inconel-sheathed chronel-alumel thermocouples.1hese thermocouples are positioned 6 inches from the face of the sample.

The recording instrument is IPT Multi-Scan 3142J Potentiometric Recorder.1hermocouples are NH5.TraceaMe.

L 30 General Description Rockbestos provided two types of fire resistant type cables for testings

1) 3 conductors,14 AWG (0.065 in) with stainless steel sheath j

2)Seaeasabove,butwithoutthestainlesssheath They were identified by the client as 00-0211 for the stainless steel sheath and 00-0208 for the cable without the stainless steel sheath.

Stainless Steel Sheath f , 0.065" wire stranded

-0.280" OD for wire'and insulation 1

Insulation 0.05" l OD 0.835" All M mansions are nominal, with the OD of the non-stainless steel sheath being 0.630 inch.

Approximately 30 ft of each type cable was coiled to fit within a section of 24 inch X 4 inch omble tzsy (open type) that measured de

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27 ' inches long. Se unsheathed sample was nested inside the stainless steel sheathed sample.

l- The tray was inserted into a 3 inch thick wall that was composed of 2 layers of 5/8 inch sheetrock on the exposed side, with 8 pcf rockwoolandalayerof5/8inchthicksheatrockontheunexposedside.

l The cable tray was mounted horizontally into the vertical wall that .

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measured 3 ft X 3 ft. Approximately 20 inches of the cable tray l

l protruded into the furnace, which contained all the coiled length of l

l cables except for the lead in and out. All penetrations were stuffed l- with rockwool.

h cable trays were supported by 1* Ming straps from the frame that contained the wall to the cable tzsy. h straps were covered with i

i inch thick knowool to prevent premature failure of support for the

l. cable tray during the fire test.

3.1 Electrical Connections ho different input electrical systems were used, one on each day of testing.

Day One Jan. 16, 1984 1

All electrical connections were performed by Rockbestos from the VTEC Imboratories electrical supply of 208v 3 phase. Three GE dry type

'120/240/fA0/480 control transformers were connected in delta. The output l voltage was only about 390 volts, which was due to the low input voltage and possibly overwinding on the low volta 6e side of the transformer. A

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- 3 phase delta load consisting of 12 52 watt,120 volt light bulbs were connected to one ed of each sample with the other ed connected to the power supply.

Day Two Jan. 17, 1984 1he following day the electrical connections were the same except that 2240/280 volt Powerstats were added in epen delta on the primary side c2 the transformers and 450 volts were obtained.

4.0 Results h ASTM lt119 time-temperature curve was followed for each test.

Both samples were energized before the start of the test and remained energized during the test. At no time during the test did any of the

. energized lights go out. After i hour of exposure, the furnace .was turned off and the samples were de-energized.and immediately moved over a floor drain. h samples were re-energized and water sprayed. ,

with a " garden type" hose for a minimum of 13/4 minutes. h time between furnace turn off and application of the hose spray was approximately 31/2 minutes. ,

h load remained energized on both samples after the water spray.

h same procedure was followed the second day with new samples. On both days the samples remained energized during the test and hose stream procedure, without exhibiting a power interruption.

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- First Day Testing Jan. 16, 1984 l

l- g Observations hre min 0:05 Smoke emitted from ends of metal sheathed cable 0:08 Liquid dripping from ends of metal sheathed cable 0:10 Sample flaming in furnace 0:20 Smoke is lessening l 0:21 Smoke being emitted from non-metal sheathed cable ,

- 0:28 - No sacke from both cables Second Day Testing Jan. 17, 1984

!: Time Observations t

hrsmin 0:04- Smoke emitted from ends of metal sheathed cable

! . 0:08- Liquid dripping from ends of metal. sheathed cable 0:35 No smoke from both cables l 50 conclusion.

Based on these testa, the fire resistant cables provided by i

Ro'ckbestos retained their electrical integrity when exposed to the

(' AS M E119 time-temperature curve and stor spray exposure.

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NeilSebts Executive Director

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2.~ Unsheathed cable nestled in stainless steel cable

-3. Sample inserted into furnace and electrical connections made l

4. Right before test - sample not yet energized
5. Smoke emitted from embles during test '

, 6. Twenty five minutes into test 7.-Moved sample to hose area right after fire exposure

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L We certify that the material covered by the subject order is in accordance with the require-ments of your Purchase Order.

ALL Assys are from toi pix 11970. They conken.* '$r AW$7 STD. limit's of freer. Cal *brahon resself.s on Lof M/-19ero treaa.6/c la fA c W85 are on file. -

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.: . . - . . _ . . . . _ . . .. ._..._..t...

SECTION 8 Reason for Subesosion: Condition Received: Item Returned:

CALISRATION Y IN TOLERANCE k CAL OPTIMlZED N CERTIFICATION OUT OF TOLERANCE AS RECEIVCD CROS8 CHECK FAILURE IMOP. .

-- 3 . ; y.- a a&':. _ct . /'. CROS8 CHECK

> fag, g g .~ ' .

g-. u, DAMAGED /

  • t p.

,4 e

SECTION C ENTER OUT OF TOLERANCE VALUES o

FUNCTION NOMINAL MEASURED ERROR %

CORREND TOLERANCE % VALUE TESTED VALUE VALUE

, e 'A.

" - *N ON N.

l REMARMS ..

l

.w -

,_ l

. .- 4% .~.

l e.

4 Lus-n33 l

- ._. . _ . . . . _ _ . . . . _ . _ . _ _ . _ _. _ . . _ _ _ _ _ . . . _ _ _ _ . . _ . _ _ _ _ . _ _ _ _ _ _ . _ _ _ _ _ _ _ . . . _ _ _ _ . . . _ _ _ . _ _ . . . -

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