ML19290E952

Notifies That Util Has Analyzed All Installed Electrical Cables for Insulation & Jacket Matl Composition.Cables Located in Open Trays W/Pvc Insulation or Jacket Have Been Coated W/Approved Flame Retardant Matl

ML19290E952
Person / Time
Site:	Pilgrim
Issue date:	03/05/1980
From:	Andognini C, Andognini G BOSTON EDISON CO.
To:	Ippolito T Office of Nuclear Reactor Regulation
References
80-39, NUDOCS 8003170374
Download: ML19290E952 (4)

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B O STO N EDISDN COMPANY Oswasak Omets 800 covtsvon sistsT SceTom. MassacMuerTTs o2199 Q. Can6 Ancommene EuPE R8 NTEND E NT aucte*. o .. Tion. oc...Tucar March 5, 1980 BEco. Ler. #80-39 Mr. Thomas A. Ippolito, Chief Operating Reactors Branch #3 Divisiva of Operating Reactors Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D. C. 20555 License No. DPR-35 Docket No. 50-293 Fire Protection References (a) Table 3.2 (Item 3.2.4) to PNPS License Amendment No. 35 (b) Table 3.1 (Item 3.1.6) to PNPS License Amendment No. 35

Dear Sir:

Pursuant to the requirements of both Reference (a) and (b), Boston Edison Co. ,

has analyzed all installed electrical cables (power, control and instrumentation) at Pilgrim Nuclear Power Station Unit #1 for insulation and jacket material com-position.

Cables located in open trays with poly vinyl chloride (PVC) insulation and or jacket were identified and as of 3/1/80, all PVC cables have been coated with Flamemastic 77, a flame retardant material approved for such use.

The remaining cables, excluding the PVC cables, were manufactured and supplied by the Okonite and Kerite Companies and as confirmed by attachments A&B, these cabica will qualify and pass the IEEE Standard 383 flame test.

Should you have any questions regarding the above subjects please contact us at your convenience.

Very truly yours, W

Attachments (A), (B)

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' ' A CHMENT A 22 industrial Park Aced. Suite 209 Hingham. Massachusette O2043 OKONITE s@ THE COMPANY

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October 25, 1979 Boston Edison Conpany General Offices 800 Boylston St.

Nston, Mass. 02199 Attn: Mr. H. F. Brannan, Project Manager, Fire Protection

Subject:

Fire Retardant Properties of Cables Supplied to Pilgrim Station Unit #1 Your Letter Dated September 27, 1979

Dear Sir:

We wish to advise that only the Okonite control and power cables shown on the three attached sheets, which you forwarded to us with your letter, will qualify and pass the flame test portion of IEEE-383.

We apologize for the delay in answering you letter.

Very truly yours, THE OKONITE COMPANY

, J. McHa Manager, Util. Sales For:

W. J. Lenahan District Manager WJL/PJM/dce Att.

21S Martet Street ATTACHMENT B saa rr. net.co, c. tami g4,og (415) 7st-30eo

,ay January 24, 1977

,h,,

.s the kerite contpany Mr. S. A. Giusti Project Engineer Bechtel Power Corporation P.O. Box 3965 San Francisco, California 94119 Attention: Mr. Lawrence Lam

Subject:

Boston Edison Company - Pilgrim Station Bechtel Order Nos. 6498-E-18. E-19 and E-20. Kerite Nos._A-SD31.

A-1615 and A-1616. Respectively

Reference:

Your Letter of September 20, 1976 Gentlemen:

This will confirm conversation in your offices on nenamhet 3,1976, at which time it was stated that cables similar to those supplied on the above orders have passed fire propagation tests as outlined in the IEEE Standard No. 383. The cables supplied on subject job are similar to the cables tested. There is no assurance, however, that testing of Boston Edison cables will give results identical to those of cables tested more recently in our own facilities, even though basic construc-tion is similar, as were the materials.

The heat of combustion, ignition point, oxygen index and density of the three materials dominantly involved in the cables in question are tabu-lated below:

Meterials FR Insulation Property HT Kerite or NS Jacket FR Jacket Heat of Combustion 11,600 7,900 10,000 (BTU per Pound)

Ignition Point 980 1,070 1,060 (Degrees F.)

Oxygen Index 19 29 37 (Percent 02) u a suusid;ary of HARVEY HUO8FLL INCORPORATEo swa , ....

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Materials FR Insulation Property HT Kerite or NS Jacket - FR Jacket Density 78.6 104.8 96.1 (Pounds per Cubic Ft.)

As discussed, the burning rate, smoke classification and toxicology have not been defined and, therefore, we will not be able to supply this information, due to the lack of any standards established thus far.

As regards to the IPCEA Vertical Flame Test, it is believed that the -

Bonfire Test as prescribed in the IEEE 383 Standard is far more severe than the IPCEA Vertical Flame Test and that the cables in question would, therefore, have no difficulty in paasing this latter test.. .

Yours very truly,

. The erite Company h

bert A. Olson acific Coast Manager RAO:ji -

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