ML19341C656

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Responds to 801118 Request for Containment Sump Info. Forwards Drawing Showing Containment Sump Design Features & Dimensions & Location Re Reactor Primary Sys.Submits List of Thermal Insulation Used in Containment
ML19341C656
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 02/27/1981
From: Counsil W
CONNECTICUT YANKEE ATOMIC POWER CO.
To: Crutchfield D
Office of Nuclear Reactor Regulation
References
AO1402, NUDOCS 8103030886
Download: ML19341C656 (5)
v • d • e


Text

.

Cr CONNECTICUT YANKEE ATOMIC PGWER COMPANY 17

j BERLIN. C O N N E CTIC U T P O. BOK 270 H ARTFORD CONNECTICUT 06101 a

Tgt gaseoseg 203 666-6911 February 27, 1981 Docket No. 50-213 A01402 Director of Nuclear Reactor Regulation Attn:

Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Reference:

(1)

D. M. Crutchfield letter to W. G.

Counsil dated November 18. 1980 Centlemen:

Haddam Neck Response to. Containment Sump Information Request In reference (1), the NRC staf f described a current testing program initiated to evaluate the performance of containment sumps. In an effort to develop appropriate test parameter ranges., the staff requested that Connecticut Yankee Atomic Power Company (CYAPCO) provide information regarding the containment sump at Haddam Neck.

In addition, informat ion regarding the insulation which is utilized within the containment at Haddam Neck was requested.

CYAPCO hereby provides the following information concerning Haddam Neck to assist the staff in obtaining information to support the containment sump evaluation program.

Item 1 of the enclosure to reference (1) requested a drawing of the containment sump showing important design features and dimensions.

This information is shown on Facility Description and Safety Analysis (FDSA)

Figu[res 3.1 1 and 3.1-5 and Northeast Utilities Service Company (NUSCO) 7

.g Drawing 16103-22032 (attachment (1)).

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nososoSSG

Item 1 also requests a drawing showing sump location in containment relative to the reactor primary system. This information is shown on FDSA Figures 3.1-1 and 3.1-5.

Item 1 also requests information on the configuration of the recirculation suction lines. This information is shown on NUSCO Drawings 16103-20231, Sheets 105A and 105B, and 16103-20033 (attachments (2), (3), and (4),

respectively).

Item 2 of the enclosure to reference (1) requests information on each type of thurnal insulation used in the containment. Due to the many miles of pipe located in containment and the different types of insulation used on them, quantifying the requested information would be an extensive task. Therefore, the following information is provided which represents a best estimate of the data requested and should prove useful in establishing the appropriate range of test paratmeters for the sump test program.

Method of Location /

Type Manufacturer Attachment Quantity 1.

Fiberglass Clarmont Enclosed in aluminized Valves, welds, etc.,

glassback cloth. Pads Approx. 1% of all are wired in place with insulation.

stainless steel wire.

2.

Asbestos Johns-Manville Blocks are wired in Approx. 95% of all Thermobestos place with stainless insulation steel wire.

Johns-Manville Blocks and wire are Reactor vessel 352 (asbestos coated with asbestos cement) cement and aluminum Johns-Manville impregnated asbestos Asbestos Cloth cloth.

Johns-Manville Blocks and wire are Piping Asbestos Paper covered with asbestos Johns-Manville paper and aluminum Asbestos Cloth impregnated asbestos cloth.

3.

Polyurethane Johns-Manville Held in place with Containment wall, adhesive and covered 72 pcs-2.c 12 x 72 with aluminum im-144 pes-12 x 36 x 72 pregnated asbestos 175 pes-1 x E6 x 144 cloth.

4.

Foam Johns-Manville Held in place with Cold water pipes, insulation Aerotube Johns-Manville 57 approx. 700 feet (molded foam Adhesive and tape.

plastic).

5.

Styro-foam Dow Held in place with Under air coolers, tape and covered Approx. 1000 sq. ft.

with copper sheathing.

. Method of to ition/

Type Manufacturer Attachment Quantity 6.

Metallic Transco Stainless steel shells are Rx vessel and filled with aluminum

nozzles, fibers and held in place 117 pcs-5' x 5' x 2" with stainless steel banding.

7.

Calcium-Johns-Manville Blocks retained by 16 gauge Changing line, pressurizer-

)

Silicate Thermal 12 aluminum jacket and banded relief line, Approx. 1%

in place.

of all insulation.

I We trust you f f ad this information responsive to the reference (1) requests.

Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY

/T44 %

W. 'G. Counsil Senior Vice President

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