ML19257D051
| ML19257D051 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/11/1980 |
| From: | BALTIMORE GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML19257D050 | List: |
| References | |
| PROC-800111, NUDOCS 8001310281 | |
| Download: ML19257D051 (18) | |
Text
. .
v FIPI TEST PROCEDURE FOR CABLE AND FIDE PENETRATIONS CALVERT CLIFFS NUCLEAR POWER PLANT UNITS 1 & 2 BALTIMORE GAS AND ELECTRIC C0!TANY Prepared By h Date / f, 80 a "
Reviewed By -/'.
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/- s- Date
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Reviewed By Date A /[ h
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Approved By --
- -- Dat 1841 305 2TI 8001310 .(-
FIRE TEST PROCEDURE FOR CABLE AIID PIPE PEITETRATIO:IS COITTENTS TEST PROCEDURE Pages 1 - 6 APPEIIDIX A - Installation Details Pages Al - A3 APPEITDIX B - Materials List Page B1 APPE:iDIX C - Cables to be Supplied by the Sponsor Page C1 - C2 and the Recommended Tray Fills FIGURE 1 - Fire Stop Penetration Test Slab Layout One Page FIGURE 2 - Fire Stop Penetration Tray Blockout Details One Page FIGURE 3 Fire Stop Penetration Control Room Floor One Page Blockout Penetration Details FIGURE 6 - Fire Stop Penetration Pipe Penetration Details One Page 1841 306
FIRE TEST PROCEDURE FOR CABLE AND PIPE PENETRATION CALVERT CLIFFS NUCLEAR PO*JER PLANT Sponsor: Baltimore Gas and Electric Company Laboratory:
A.
Purpose:
The purpose of this test is to evaluate the existing cable and pipe penetration fire stop design and construction in order to qualify them by test at an independent test laboratory per ASTM E-119-1976 Standard Time-Temperature Curve for the required three hour separation. In addition, other materials will be tested and evaluated simultaneously which may be utilized, if required.
B. Scope:
- 1. Test shall be conducted on a custom concrete slab having both a l'-0" and a 2'-0" thick segment with an assortment of blockouts as shown in Figure 1. It shall be fire endurance tested for a minimum of three hours in accordance with ASTM E-119-19 76 Standard Time-Temperature Curve and hose stream test shall be performed per IEEE Std. 63h-1978, Section 5.3.12, except for the use of a no :le from the Sponsor's inventory.
- 2. A single test, having various fire stop penetration configurations as shown on Figure 2 through 6, shall be conducted within thirty (30) days of issuance of a written Purchase Order to proceed.
- 3. Each arrangement, i.e. , each of six trays , three raceway blockouts and two cast-in-place elements, shall be installed, supported, tested and reported independently from every other arrangement, thus constituting eleven concurrent fire endurance and hose stream tests.
1841 307
- k. The fire stop asse=bly shall be tested in the horisontal config-uration (floor configuration: to qualify for both floor and vall fire stop design.
C. Descriution of Test Materials:
- 1. The test slab shall be designed to fit the test furnace furnished with required blockouts as shown in Figure 1, formed, reinforced, and cured by the Laboratory. The Laboratory shall supply the Sponsor with the necessary drawings of the final slab design at the time of, or prior to, written acceptance of the contract.
- 2. The test sisb, masonry grout, twelve (12) inch pipe sleeves, all test instrumentation, unistrut material, miscellaneous hardware and tools shall be supplied by the Laboratory. Also, additional material as listed in Appendix 3 shall be provided by the Laboratory.
- 3. All cable, pipe, trays, conduit and wirevays as well as all filler material other than grout shall be supplied by the Sponsor in order that the test reproduces the installed field conditions.
- h. The installation of pipe, electrical cable and raceway (i.e. , cable trays, conduit and virevay), grouting and fillinC with fire resistive materials shall be by the Laboratory. The Sponsor shall furnish no test sit'e labor, but shall provide a representative to witness the installation.
5 Cable trays , conduit and pipe shal2 .e approximately six (6) ft. long and installed with approximately one (1) foot extension below the slab (into the furnace) leaving three (3) or four (h) feet extending above the slab top surface, depending upon location on the slab.
Wirevays shall be approximately 3'-2" long and installed approximately one (1) foot extension below the slab (into the furnace) leaving two (2) inches extending above the slab top surface. }g }}}
- 6. Conduits and wirevays shall be filled to 40% based on cross sectional area utilizing 90% by number silicone and 10% by nunber non-silicone c ables.
- 7. Cable trays and covers shall be galvanized steel and installed as shown on Figures I and 2.
- 8. Wirevays shall be k" x h" galvanized steel; conduit shall be Schedule 40 rigid calvanized steel in 1, 2 and 4 inch diameters. All shall be installed in three separate 15" x 8" blockouts , supported and back-filled in 3 different configurations as shown in Figures 3, h, and 5 9 Sleeve and pipe penetrations shall consist of two 12" diameter by 15" long standard weight steel ripe sleeves cast in place, and two 8" diameter by 6' long, Schedule 40, steel pipes capped on the bottom as shown on Figure 6.
- 10. Csble supplied in trays, wirevays and conduit shall be low voltage power, control and instrumentation with silicone rubber insulation, glass braid and an overall asbestos braid jacket, as provided by the Sponsor. Sponsor shall also furnish non-silicone rubber (XLP or EPR) insulated esble for use as outlined in C.11.
- 11. Cable tray fill shall be as follows, based on physical canacity, i.e. ,
level cress section as opposed to a percentage of mass vs. void area as is connon in the electrical trade: Tray Fill Cable Tyne* 1 10% All non-silicone 2 100% 90% silicone,10% non-silicone 3 to 6 incl. 50% 90% silicone, 10% non-silicone
- Percentage by number of cables.
The reco= mended cable tray, wirevay and conduit fills are shown in Appendix C. 18<11 309
h-D. Descriution of Test
- 1. The fire stop configuration shall be fire endurance tested to the ASTM E-119-1976 Standard Time-Temperature Curve for a minimum of three hours.
- 2. Lacediately following the fire endurance test, the assembly shall be hose strea: tested to IEEE Std. 634-1978, Section 5.3.12, consisting of a straight stream setting from a 1 inch no :le from the Sponeor's stock at a pressure of 75 psi, at a distance of 10 ft. ,
with a minimum flow of 75 gal./ min. The hose-stream shall be directed at the exposed side of the slab for a period of time determined by the net exposed slab surface aren, on the basis of 2 min. per 100 sq. ft.
- 3. Thermocouples shc11 be availible and instrumented for use in monitoring temperatures of various elements during the fire endurance test.
Minimum requirements of IEEE Std. 63h-1978, Section 5.3.7 through 1.'., should be used. L. Extra Kaowool shall be kept on hand during the f Lre test for use in plugging openings as a result of possible failure ranging from flaring around one or several cables in a tray to tne loss of a co=plete 15" x 8" blockout, in order that flaming from such a loss vill be restricted from deteriorating adjacent ele =ents or voiding the entire three hour test by loss of furnace heat. E. Acceptance Criteria
- 1. Each of the individual cable and pipe penetration fire stops sha21 be considered acceptable for use in rated fire barrier provided:
- a. Eadi fire stop withstands the fire endurance test as described without passage of flame or gases hot enough to ignite the cable
)b
or other fire stop materials on the unexposed side for a period equal to the required fire rating,
- b. Each fire step withstands the hose stream test as described without causing an openin6 through the fire stop.
- 2. The successful completicn of the above tests by such penetration assembly in the horizontal confi6uration shall qualify each such assecbly for field installation consistent with the rating achieved in both horizontal and vertical penetrations except penetrations detailed in Ficures 3, 4, and 5.
- 3. Results of one or several tray, conduit, or wirevay penetrations shall not prejudice the results of any other individual penetration designs.
F. Documentation
- 1. Following the procedures as outlined in this Specification and also the standards as listed in B.1, all data shall be provided to document satisfactory compliance.
- 2. Engineering data and references to the other publications which were used to make the test and select the equipment shall be included in the documentation.
- 3. The results, pass or fail for each penetration, shall be documented and supplemented with photographs and a statement of the conclusions drawn by Laboratory. A final certified test report shall be trans-mitted to one Sponsor within 21 days of the completion of the test.
- h. Installation methods shall be described including any Quality Assurance data applicable to the specific materials and installation methods used.
1841 311
C. General Personnel from Baltimore Gas and Electric Co. , Bechtel Corp. (con-sultant) and IIRC shall be allowed to witness the tests. The Sponsor shall be notified 5 vorhing days in advance of the performance of the test. 1841 312
APPEITDIX A Installation Details Figure 1 A general arrangement plan view (Fig.1) of the stepped, two thickness test slab is shown which shall be sized by the Laboratory in the optimum con-figuration to reflect:
- 1. The size and shape of the test furnace to be used.
- 2. The necessity to test the four blockouts and two cast-in-place arrange-ments shown, with reasonable spacing to prevent a failure of one element from adversely affecting any other elements.
In general, detailed Figure 2 (Trays #1, #2, and #3), and 3 are depictions of existing field conditions in the Sponsor's plant. The other arrangements are variations which are presumed to have superior fire and hose stream resistive characteristics should any of the primary arrangements prove to have inadequate endurance to the tests. Firure 2 All ladder trays are to be grouted into a single 3'-0" by 6'-0" blockout, using concrete, and reinforcing rod if necessary, similar to that used in casting the test slab. Grouting shall tske place after cible and solid tray covers are installed. Each tray shall penetrate one (1) foot below and (h) feet 6bove the slab and shall be individually supported on the cold side (top) by use of galvanized steel Unistrut, or aqual, in accordance with good industry practice. Solid tray covers shall be two (2) feet long and penetrate six (6) inches above and below the slab. Each tray shall h ve Kaovool hand packed around individual cables to a depth as shown in Fig. 2 at both top and bottom surfaces of the blockout. Both exposed surfaces of the Kaowool packing shall be covered with a succession of 1841 313
- A2 -
three (3) applications of approximately k" wet Flamemastic 71A Spray to for= a final, cured coating of 3/8" depth. See individual tray details for precise location of the Kaowool packing and Flamemastic coat. Trays
#1, #2 and #3 shall have Kaowool packed within the blockout, leaving 6 inches of unsealed cable in the center, with the Flamemastic at the blockout surfaces. These represent the existing field conditions , with a variety of cable fills.
Tray #h shall be a duplicate of Tray #1 except that the 6 inch space between Kaovool packs shall be filled with Silicone RTV Foam (20 lbs./cu. ft. density). Individual cables shall be moved from side to side, as the foam is poured in place, to assure maximum fill without air gaps. Tray #5 shall be a duplicate of Tray #1 except that all outside surfaces of the fire stops, tray and cover shall be coated with an Intumescent Paint (Vimasco P.O.F. 62-10) in accordance with the manufacturer's instructions. Tray #6 shall be a duplicate of Tray #1 except that the six (6) inch space at each end, extending beyond the surface of the slab and fire stop, shall be filled with Silicone RTV Foam (20 lbs./cu. ft. density). Individual cables shall be moved from side to side, as the foam is poured in place, to assure maximum fill without air gaps. One inch Knowool blanket dems vill be installed to detain the foam in place prior to curing. The dams shall remain after curing. Firures 3, h and 5 The three (3) 15" x 8" blockouts duplicate a co= mon size in the Calvert Cliffs Control Room floor. Each one contains one each: h" square wirevay, 4" conduit , 2" conduit and 1" conduit; all containing conductors typical of those actually installed at the j obsite. Each vireway shall extend one foot into the furnace below the slab, and two inches on the unexposed side above the slab. Each raceway shall be cla= ped to a Unistrut laid flat on the top of slab, bridging i841 314
- A3 -
the blockout. The exposed (botto=) of the blockout shall be enclosed with a 12" x 19" - h" thick Marinite (36A or XL) board with cutouts to fit the four (4) raceways in each case and centrally mounted to provide a two (2) inch border on all four sides. The Marinite shall be covered with three applications of approximately h." vet Flame =astic TlA sprayed to form a 3/8" dry cured coating. Figure 3 arrangement shall have the void above the Marinite board filled with vermiculite up to the top of slab, the virevay and conduits shall be packed with 3" of Kaovool, and the top of fill and raceways shall be covered with Flamemastic 71A similar to the bottom coat on the Marinite board. Figure 4 arrangement shall have the void filled with 18 inches of verriculite followed by 6" of Silicone RTV Foam up to the top level of the slab. The wirevay cnd conduits shall be filled with a 1" Kaovool dam and 6" of Silicone RTV Foam (20 lbs./cu. ft. density) to the top of the slab. Figure 5 arrangement shall be a duplicate of Ficure 3 in all respects but with the addition of a three (3) inch high sheet metal das on top of the slab, enclosing a 10" by 17" space which shall be filled with Silicone RTV Foam ( 20 lbs. /cu. ft. density). Figure 6 - The two 12 inch pipe sleeves shall be cast in the slab. Both 8 inch pipes shall be individually supported on the unexposed (top) side by use of galvanized steel Unistrut, or equal, in accordance with good industry practice. The annular spaces between pipes and sleeves shall be closed with Kaovool or Silicone RTV Foam (20 lbs./cu. ft. density) supplied for that purpose by the Sp;nsor, as detailed in Figure 6. Note: All cables in the cable trays , virevays and conduits shall be supported on both sides of the slab. 1841 315
APPEIDIX B
!!aterials List The following material vill be supplied by the Sponsor; 6 ladder type cable trays 24" x 3" x 6'-0" with 2'-0" long solid tray covers 3 pieces 4" x 4" x 3'-2" steel wirevay 3 pieces 4" dia. x 3'-2" rigid steel conduit 3 pieces 2" dia. x 3'-2" rigid steel conduit 3 pieces 1" dia. x 3'-2" rigid steel conduit 2 pieces 8" dia. x 6'-0" Schedule h0 steel pipe and pipe caps 1 spray no::le Cable - see Appendix C The materials , as listed below, shall be supplied by the Laboratory. If the Laboratory has any difficulties in obtaining this material, it should be stated and the Sponsor will furnish this.
Intumescent Paint (Vimasco P.O.F. 62-10) 1 Gallon. Flamemaster, Flamemastic 71A 5 Gallons. John Mansville - !!arinite Board (36A or XL) " thick x 4'-0" x k '-0". Babcock and Wilcox Kaovool, Basic Fiber, Bulk A, 35 lbs. Dow Corning's 3-65h8 Silicone RTV Foam, sufficient to fill 2.0 cubic feet when cured. Vermiculite , sufficient to fill 2.0 cubic feet. }j{
}
APPENDIX C A. The following cable types and quantities vill be supplied by Sponsor. BG&E CABLE QUANTITY TYPE FlflCTION CODE (FEET) 2/C #1h AWG SILICONE CONTROL B12/B62 672 5/C #14 AWG SILICONE CONTROL Blk/36h 708 7/C #12 AWG SILICONE CONTROL B19 822 3/C #10 AWG SILICONE POWER Bol/B51 912 2/C #14 AWG SILICOME INSTRUME;IT C01/C51 89h 2/C #14 AWG XLP CONTROL B25/B75 312 5/C #1h AWG XLP CONTROL B27/B77 20h 3/C #8 AWG XLP POWER B28/B78 120 B. Reco== ended Fillc_ The eight cable types are to be cut into 6 foot lengths and installed into the various raceways with the following distribution and quantity: TRAY #1 (10% Fill) B28/B78 20 CABLES TRAY #2 (100% Fill) B12/B62 27 CABLES Blk/B64 27 CABLES B19 37 CABLES B01/B51 37 CABLES Col /C51 37 CABLES B25/B75 10 CABLES B27/B77 10 CABLES TOTAL 185 1841 317 TRAY #3, h , 5, & 6 ( 50% Fill) ~ B12/B62 16 CABLES B1h/B6h 16 CABLES B19 22 CABLES B01/B51 22 CABLES C01/C51 22 CABLES B25/B75 6 CABLES B27/B77 6 CABLES TOTAL 110
- C2 -
h" X h" WIPf4AY (3 Each) (kO5 Fill) Blk/B64 h CABLES B19 h CABLES B01/B51 4 CABLES C01/C51 4 CABLES B25/B75 2 CABLES TOTAL 18 h" CO:!DUIT ( 3 Each) ( ko% Fill) B12/B62 h CABLES Blk/B6h. k CABLES B01/B51 4 CABLES C01/C51 h CABLES B25/B75 2 CABLES TOTAL 18 2" CO:lDUIT (3 EACM) (40% Fill) B12/B62 2 CABLES Blk/B6h 1 CABLE B01/B51 1 CABLE d25/B75 1 CABLE TOTAL 5 1" CO::DUIT (3 Each) (40% Fill) B12/B62 1 CABLE B25/B75 1 CABLE TOTAL 2 1841 318
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