ML072340055
| ML072340055 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/21/2007 |
| From: | Entergy Nuclear Generation Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FAQ 06-0022 R1, NEI 04-02 | |
| Download: ML072340055 (10) | |
Text
FAQ Number 06-0022 R1 Page 1 of 10 faq 06-0022 - r1 .doc Plant: Arkansas Nuclear One - ANO Submittal Date: August 21, 2007 Submitter Contact: Rebecca Puckett Phone 479-858-4518 Submitter Email: rpucket@entergy.com Distribution: (NEI Internal Use) 805 TF FPWG RATF RIRWG BWROG PWROG
Subject:
Interpretation of guidance? Yes
Proposed new guidance not in NEI 04-02? Yes
Details: NEI 04-02 guidance needing interpretation (include section, paragraph, and line numbers as applicable):
Appendix D, Section D.
3.4 - After paragraph 2 that begins, "The range of heat realease rate data for a given type of insulation --"
Circumstances requiring guidance interpretation or new guidance:
Section 3.3.5.3 of NFPA 805 and A ppendix A, Section 3.3.5.3 r equire that electric cable construction comply with a fl ame propagation test a cceptable to the AHJ and that it be a type that has been tested using a recognized flame spread test such as IEEE 817 or IEEE 1202.
Several NRC documents include the requirements for flame propagation for existing or new electrical cables. In general those documents refer to IEEE 383-1974 and/or IEEE 1202-1991 as the NRC accepted standards for flame propagation. The standard flame propagation tests accepted by the US NRC are still basically the same. Among those documents are the following:
NUREG-0800 (Rev.4, Oct 2003) states that "Electrical cables should meet flame test criteria of IEEE 383 or 1202, or be provided with alternative protection as allowed by the specific plant licensing and/or design basis (See Regulatory Guide 1.189
)".
FAQ Number 06-0022 R1 Page 2 of 10 faq 06-0022 - r1 .doc Appendix A to Branch Technical Positi on (BTP) APCSB 9.5-1 states that "
electric cable constructions should, as a minimum, pass the flame test in the current IEEE 383
". It also states that "for cable installation in operating plants and plants under construction that do not meet the IEEE 383 flame test requirements, all cables must be covered with an approved flame retardant coating and properly derated.
"
Reg Guide 1.189 (Rev 1, Mar 2007) states that "Electric cable construction should pass the flame test in IEEE Standard 383, "IEEE St andard for Type Test of Class IE Electric Cables, Field Splices, and connections for Nuclear Power Generating Stations" (Ref. 109), or IEEE Standard 1202, "IEEE Standard for Flame Testing of Cables for use in Cable Trays in Industrial and Commercial Occupancies"(Ref. 110). (This does not imply that cables passing either test will not require additional fire protection.) For cable installations in operating plants and plants under construction before July 1, 1976, that do not meet the IEEE Standard 383 flame test requirements, all cables should be covered with an approved flame-retardant coat ing and properly derated or be protected by automatic suppression. Although cabl e coatings have been shown to reduce flame spread, coated cables are considered intervening combustibles when determining the protection requirements of Section III.G.2 of Appendix R to 10 CF R Part 50. Coated cables do not have higher damage thresholds and, therefore, are not equivalent to IEEE 383 or IEEE 1202 cables. In addition, coated cables can and do ignite in fires."
In order to compare test re sults from some other industry recognized tests the utility should compare theoretical burner heat output, heat exposure time, and pass/fail criteria to determine the relative severity of the test standards. The method recognized is to examine the vertical flame propagation test in IEEE 383-1974 as a baseline to determine if testing conditions and/or passing criteria are comparabl
- e. Tests with lower burner heat outputs than IEEE 383-1974 are very difficult to compare due to the difference in test sample size.
Note: A flame propagation test procedure in one Standard could be included or referenced in another standard.
That does not mean the two standards are the same; only that the standard uses the same testing procedure for flame propagation testing. A standard might have other sections which have nothing to do with flame propagation, like smoke and aging test procedures, materi als of construction, or markings, among other procedures and requirements. For that reason data must be organized in terms of flame tests instead of individual standards.
As a matter of example the utility proposes utilization of the following methodology presented by the NRC for comparison realizing other test comparison by the individual utility:
METHODOLOGY FOR COMPARISON OF CABLE TESTS TO IEEE 383-1974 AND IEEE 1202-1991
Table 3 contains a list of cables examined by the NRC for use in this demonstration
.
FAQ Number 06-0022 R1 Page 3 of 10 faq 06-0022 - r1 .doc Table 3 Cable Standards Examined and Respective Flame Tests Test Title (Test Type) Standard Organization and Number Standard Title NFPA 262 Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling spaces (2007 Ed) FT-6/Flame Travel Test (horizontal) CSA 22.2 No. 0.3 Test Methods for Electrical Wires and Cables (Jan2005) Fire Test (Riser/vertical) UL 1666 Test for Flame Propagation Height of Electrical and Optical Fiber Cables Installed Vertically in Shafts (4 th Ed Nov2000 Revisions thru Jul2002) UL 1581 Reference Standard for Electrical Wires, Cables and Flexible Cords (4 th Ed Oct2001 Revisions thru Aug2006) UL 1685 Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Fiber Optical-Fiber Cables (2 nd Ed Feb1997 Revisions thru Nov2000)
UL 83 Thermoplastic-Insulated Wires and Cables (13 th Ed Nov2003 Revisions thru Apr2006)
UL 44 Thermo set-Insulated Wires and Cables (16 th Ed Jul2005 Revisions thru Nov2005) CSA 22.2 No. 0.3 Test Methods for Electrical Wires and Cables (Jan2005) FT-4/Vertical Flame Test (vertical) IEEE 1202-1991 IEEE Standard for Flame Testing of Cables for Use in Cable Tray in Industrial and Commercial Occupancies (1991) Flame Test qualification (vertical) IEEE 383-2003 IEEE Standard for Qualifying Class 1E Electric Cables and Field Splices for Nuclear Power Generating Stations (2003; Revision of IEEE 383-1974) Vertical Cable Tray Flame Test (vertical) ICEA T-29-520 Conducting Vertical Cable Tray Flame Tests with Theoretical Heat Input Rate of 210000 Btu/hr (Sep 1986) IEC 60332-3-21 IEC 60332-3-22 Vertical Flame Spread (vertical) IEC 60332-3-23 Tests on Electric Cables Under Fire Conditions Parts 3-21 to 23: Test for Vertical Flame Spread of Vertically-Mounted Bunched Wires or Cables: Category A (F/R), A&B (Oct2000) UL 1581 See above UL 83 See Above UL 44 See Above Vertical Tray Flame Test (vertical) UL 1685 See Above Vertical Cable Tray Flame Test (vertical) ICEA T-30-520 Guide for Conducting Vertical Cable Tray Flame Tests with Theoretical Heat Input of 70000 Btu/hr (Sep1986) Flame Test (vertical) IEEE 383-1974 IEEE Standard for Type Test of Class 1E Electric Cables, Field Splices, and Connections for Nuclear Power Generating Stations (1974) Flame Test (vertical) IEEE 817-1993 IEEE Standard Test Procedure for Flame-Retardant Coatings Applied to Insulated Cables in Cable Trays (1993) Vertical Flame Spread (vertical) IEC 60332-3-24 Tests on Electric Cables Under Fire Conditions Parts 3-21 thru 23: Test for Vertical Flame Spread of Vertically-Mounted Bunched Wires or Cables: Category C (Oct2000) Vertical Flame Propagation (vertical) IEC 60332-1-2 Test for Vertical Flame Propagation for a Single Insulated Wire or Cable - Procedure for 1 kW pre-mixed (2004-07) Vertical Flame Propagation (vertical) IEC 60332-1-3 Test for Vertical Flame Propagation for a Single Insulated Wire or Cable - Procedure for determination of flaming droplets/particles (2004-07) UL 1581 See Above UL 83 See Above UL 44 See Above VW-1 Vertical Wire flame Test (vertical) CSA 22.2 No. 0.3 See Above
FAQ Number 06-0022 R1 Page 4 of 10 faq 06-0022 - r1 .doc Note: A reference hard copy of each standard reviewed should be available in the US NRC Technical Library and RES Fire Team
Test Ranking and Description
IEEE 383-1974 is the baseline test to which the other tests will be compared. It is a 20kW (70000 Btu/hr) heat exposure, vertical test considered the minimum requirement of the US NRC to pass flame propagation criteria. As in all the 20 kW tests discussed below, it has a 20 minute exposure time. This test requires cables to self extinguish before reaching the top of the tray (8ft.) to pass the test.
One of the most severe flame tests is the FT-6 Horizontal Flame Test included in the NFPA 262 (issued by NFPA) and CSA C22.2 No. 0.3 standards. It is a horizontal flame test used for cables in plenum applications.
This test uses a burner heat output of 86 kW (294000 Btu/hr). This test has one of the lowest acceptable damage lengths the second highest heat output and uses high air flow in its chamber during testing to increase flame spread. This combination of variables makes it one of the most rigorous tests for a sample to pass.
This is currently considered the most severe flame test.
The UL 1666 Fire Riser Test is another of the more severe flame tests. It is a vertical test used for cables in riser shaft applications. It has the highest heat output of all the tests (154.5 kW (527500 Btu/hr)), second highest exposure time (3 0 minutes) and high air flow in its chamber during testing. This test has an acceptable cable damage length of 12 ft. Even though the damage criteria is less severe than the IEEE 383-1974 (12 ft.
vs. 10 ft.), the higher expos ed heat and time makes th is test more severe.
The FT-4/Vertical Flame Test, included in Standards IEEE 1202-1991 , CSA22.2 No.
0.3, UL 1685 , and referenced in UL 1581, UL 44, and UL 83 , is the most rigorous of the 20 kW (70000 Btu/hr) tests.
The testing conditions and e quipment in all of these standards are essentially the same. What makes this test t he most difficult to pass of the 20 kW tests is its low acc eptable damage length of 4.9 ft.
UL 1581 See Above UL 83 See Above UL 44 See Above FT-1 Vertical Flame Test (vertical) CSA 22.2 No. 0.3 See Above Flame Test (vertical) IPCEA S-61-402 Thermoplastic-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy (Oct1994) UL 1581 See Above UL 83 See Above UL 44 See Above FT-2 Horizontal Flame Test (horizontal) CSA 22.2 No. 0.3 See Above Standard Test Method for flame Spread (vertical) ASTM D5537-03 Standard Test Method for Heat Release, Flame Spread Smoke Obscuration, and Mass Loss Testing of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration (Ded2003) Fire Propagation Test FM 3972 Test Standard for Cable Fire Propagation (Mar1994)
FAQ Number 06-0022 R1 Page 5 of 10 faq 06-0022 - r1 .doc The IEEE 383-2003 Standard Flame Te st qualification cites: "
Cable shall be flame retardant in accordance with the requirements of IEEE Std. 1202-1991 or NFPA 262-2002. Switchboard cables, coaxia l, twinaxial, and triaxial cables shall as a minimum pass the UL VW-1 flame test." This citation is the only direction the IEEE 383-2003 standard gives on cable flame propagation testing. The IEEE organization superseded IEEE 383-1974 standard with IEEE 383-2003. Still, the US NRC standards on flame propagation tests are IEEE 383-1974 or IEEE 1202-1991 as cited on the NRC documents previously discussed.
The ICEA T-29-520 (issued by ICEA) standard is essentially the same as the 20 kW (70000 Btu/hr) IEEE 383-1974 tests except with a burner heat out put of 62 kW. In this test the distance acceptance criteria is the same as IEEE 383-1974: 8 ft. Cables tested using this test will meet or exceed performance of IEEE 383-1974 tested cables, and could have similar cable performance to te sts like the FT-4/Vertical Flame Test.
The Vertical Flame Spread tests (IEC 60332-3-21, IEC 60332-3-22 and IEC 60332-3-23 (issued by IEC) uses a burner of 20 kW (70000 Btu/hr) heat output.
In those tests, the recommended acceptance length of damage is 10.2 ft. which is less rigorous than the 8 ft. of acceptable damage of the IEEE 383-19 74 standard, but the heat exposure time is 40 minutes which is twice the exposure time in IEEE 383-1974. In order to compare the severity of these IEC tests with the IEEE 383-1974 test, the maximum average damage length (adl) per heat exposure time (het) ca n be calculated. Assuming most of the damage will occur during flame application ti mes, an average adl/
het of 0.4 ft of damage/minute (during the 20 minutes of flame application) for the IEEE 383-1974 test and an average adl/het of 0.255 ft. of damage/mi nutes (during the 40 minutes of flame application) for the IEC tests.
If those two values are com pared, it can be observed that any sample which has an average adl/het gr eater (during flame application) than the calculated should fail the test. In this ca se, the IEC test will be more rigorous than the IEEE 383-1974.
The Vertical Tray Flame Test (UL 1581, 1685, 83 and 44) and the Vertical Cable Tray Flame Test (ICEA T-30-520 (issued by ICEA)) all use a burner with a 20 kW (70000 Btu/hr) heat output. Those two tests are very similar to the IEEE 383-1974. The three have the same acceptable damage length of 8 ft. and require c ables to self extinguish before reaching the top of the tray. Also, the heat exposu re time is 20 minutes. These tests have minor variations in procedure and equipment used. IEEE 817-1993 Flame Test is mainly used to determine whether cables need to be coated or not. It does not have pass/fail criteria. If cable damage reac hes the top of the tray, the cable is recommended to be coated.
The IEC 60332-3-24 standard is very similar to IEEE 383-1974 but has less strict acceptance criteria. This test has the sa me burner heat output and exposure time as IEEE 383-1974 but has an acceptable damage length of 10.2 ft. making the test less severe.
FAQ Number 06-0022 R1 Page 6 of 10 faq 06-0022 - r1 .doc Results of the Investigation of Specific Test Criteria From Test in Previous Sections:
Table 4 provides NRC comments on Flame Propagation Tests included in more than one standard examined by the NRC for purposes of clarification of the FAQ. It can be used as a demonstration of expectations of the NRC to allow crediting other specific testing methodologies employed by individual utilities.
Table 5 provides a summary of the test ing methods that have been examined by the NRC in terms of testing conditions and acceptance criteria Table 4 NRC comments on Selected Tests Test Name (Test Type) Cable Standard # Comments NFPA 262 This std includes procedure and requirements of the FT-6/Horizontal Flame Travel Test FT-6/Flame Travel Test (horizontal) CSA 22.2 No. 0.3 The Std. refers (sends) user to use FT-6/Horizontal Flame Travel Test Procedure in NFPA 262 Std. IEEE 1202-1991 CSA 22.2 No. 0.3 sec 4.11.4
& App A UL 1685 sec 12-19 These stds. Include procedure and requirements of the FT-4/Vertical Flame Test UL 44 sec 5.14.6 & 8.14.6 UL 83 sec 5.12.5, 5.12.6.3 &
8.12.5 FT-4/Vertical Flame Test (vertical) UL 1581 sec 1164 These stds. Refer (send) user to use FT-4/IEEE 1202 Vertical Tray Flame Test procedure in UL 1685 or CSA 22.2 No. 0.3 Stds. Flame Test Qualification (vertical) IEEE 383-2003 This std. refers (sends) user to use Flame Tests procedure of NFPA 262 (horizontal flame test) or IEEE 1202-1991 (vertical flame test) stds. IEC 60332-3-21 IEC 60332-3-22 Vertical Flame Spread (vertical) IEC 60332-3-23 These tests follow the same procedure and apparatus in IEC 60332-3-10 Std. but the requiremnts apply to different category cables A (F/R), B and C. UL 1685 sec 4-11 UL 44 sec 5.14.5 & 8.14.5 UL 83 sec 5.12.6.2 &
8.12.6.1 These stds.include procedure and requirements of the Vertical Tray Flame Test (also called UL Flame Exposure)
Vertical Tray Flame Test (vertical) UL 1581 sec 1160 This Std. refers (send) user to use Vertical Tray Flame Test in UL 1685. std. UL 1581 sec 1080 CSA 22.2 No. 0.3 sec 4.11.7
& App A & D This std. includes procedure and requirements of the VW-1 Vertical Wire Flame Test UL 44 sec 5.14.4 & 8.14.4 VW-1 Vertical Wire Flame Test (vertical) UL 83 sec 8.12.1 & 8.12.3 This Std. refers (sends) user to use VW-1 Vertical Wire Flame Test in UL 1581 or CSA 22.2 No. 0.3 stds. UL 1581 sec 1060 CSA 22.2 No. 0.3 sec 4.11.1
& App A This std. includes procedure and requirements of the FT-1 Vertical Flame Test UL 44 sec 5.14.3 & 8.14.3 FT-1 Vertical Flame Test (vertical) UL 83 sec 8.12.2 This std. refers (sends) user to use FT-1 Vertical Flame Test in UL 1581 or CSA 22.2 No. 0.3 stds. UL 1581 sec 1100 CSA 22.2 No. 0.3 sec 4.11.2
& App A This std. includes procedure and requirements of the FT-2 Horizontal Flame Test UL 44 sec 5.14.1 & 8.14.1 FT-2 Horizontal Flame Test (horizontal) UL 83 sec 8.12.3.2 This Std. refers (sends) user to use FT-2 Horizontal Flame Test in UL 1581 or CSA 22.2 No. 0.3 stds.
FAQ Number 06-0022 R1 Page 7 of 10 faq 06-0022 - r1 .doc Table 5 Testing Conditions and Acceptance Criteria Acceptance Criteria Test Exposure Conditions Test Names(s) (Test Type) Test Standard # Acceptable Damage Length Other Acceptance Criteria Burner Heat Output Exposure time NFPA 262 FT-6/Flame Travel Test (horizontal) CSA 22.2 No. 0.3 5 ft. Max temperature shall be 542 o F 86 kW (294000 Btu/hr) 20 min Fire Test (Riser/vertical)
UL 1666 12 ft. Any TC shall not exceed 850 o F 154.5 kW (527500 Btu/hr) 30 min UL 1581 UL 1685 UL 83 UL 44 CSA 22.2 No. 0.3 FT-4/Vertical Flame Test (vertical) IEEE 1202-1991 4.9 ft. N/A 20 kW (70000 Btu/hr) 20 min Flame test qualification (vertical) IEEE 383-2003 Refers user to IEEE 1202-1991 or NFPA 262 flame propagation test procedure. Vertical Cable Tray Flame Test (vertical) ICEA T-29-520 8 ft. Cables that self extinguish pass the test; fail if the flame propagates to the total height of the tray (8 ft.) 62 kW (210000 Btu/hr) 20 min IEC 60332-3-21 IEC 60332-3-22 Vertical Flame Spread (vertical) IEC 60332-3-23 10.2 ft. N/A 20 kW (70000 Btu/hr) 40 min UL 1581 UL 83 UL 44 Vertical Tray Flame Test (vertical) UL 1685 8 ft. Requires cable to self extinguish before reaching top of the tray. 20 kW (70000 Btu/hr) 20 min Vertical Cable Tray Flame Test (vertical) ICEA T-30-520 8 ft. Cable damage shall not extend to the top of the tray (8 ft.) 20 kW (70000 Btu/hr) 20 min Flame test (vertical) IEEE 383-1974 8 ft. Cables that self extinguish pass the test; fail if the flame propagates to the total height of the tray (8 ft.) 20 kW (70000 Btu/hr) 20 min Flame test (vertical) IEEE 817-1993 N/A When flame is removed the cable needs to self-extinguish. Uncoated cables that burn to the top of the tray are suitable for testing coatings. 20 kW (70000 Btu/hr) 20 min Vertical Flame Spread (vertical) IEC 60332-3-24 10.2 ft. N/A 20 kW (70000 Btu/hr) 20 min Vertical Flame Propagation (Vertical) IEC 60332-1-2 N/A Requires more than 50 mm (1.97 in.) of distance between the lower edge of the top support and the onset of charring and less than 540mm (21.26 in.) from the lower edge to the top support 1 kW (3400 Btu/hr) 1-8 min (depends on sample diameter) Vertical Flame Propagation (Vertical) IEC 60332-1-3 N/A Requires that the filter paper does not ignite during the test. 1 kW (3400 Btu/hr) 1-8 min (depends on sample diameter) UL 1581 VW-1 Vertical Wire Flame UL 83 N/A If sample burns for more than 60 sec the sample fails the 500 W (1700 Btu/hr) 75 sec (flame applied 5 times FAQ Number 06-0022 R1 Page 8 of 10 faq 06-0022 - r1 .doc UL 44 Test (vertical) CSA 22.2 No. 0.3 test. If 25% or more of the cotton batting or indicator flag burns the cable fails test. of 15 sec with time intervals of no more than 60 sec) UL 1581 UL 83 UL 44 FT-1 Vertical Flame Test (vertical) CSA 22.2 No. 0.3 N/A If sample burns for more than 60 sec the sample fails the test. If 25% or more of the cotton batting or indicator flag burns the cable fails test. 500 W (1700 Btu/hr) 75 sec (flame applied 5 times of 15 sec with time intervals of no more than 60 sec) Flame Test (vertical) IPCEA S-61-402 N/A If sample burns for more than 60 sec the sample fails the test. If 25% or more of the cotton batting or indicator flag burns the cable fails test. 500 W (1700 Btu/hr) 75 sec (flame applied 5 times for 15 sec with time intervals betweem applications) UL 1581 UL 83 UL 44 FT-2 Horizontal Flame Test (horizontal) CSA 22.2 No. 0.3 N/A No flaming particles shall drop from the specimen causing the cotton under the specimen to ignite and the cable should self-extinguish. 500 W (1700 Btu/hr) 30 sec Standard Test Method for Flame spread (vertical) ASTM D5537-03 N/A N/A 20 kW (70000 Btu/hr) 20 min Fire Propagation Test (vertical) FM 3972 N/A Until cable self-extinguish 50 kW (175000 Btu/hr) *(heater output) Summary of the Results from the NRC Investigation Tables 1 and 2 below provide a summary of the testing methods th at are more severe than IEEE 1202-1991 (Table 1) or more severe than IEEE 383-1974 (Table 2).
The flame propagation tests in Table 1 also have more rigorous acceptance criteria than IEEE 383-1991. Cables tested by any of these methods should have similar or better flame propagation resistance than if tested by IEEE 383-1974 test method. Note that all test standards in Table 1 are also included in Table 2, since IEEE 1202-1991 is a more rigorous test method than IEEE 383-1974.
Conclusion
Electrical cables tested in accordance with, and meeting the flame propagation acceptance criteria of one or more of the Test Standards listed in Table 2 should be considered to perform equal to , or better than if they were tested to IEEE 383-1974. Low burner heat outputs tests are not recommended to be accepted due to the impractical nature of compar ing these small scale screening test requirements (e.g. low thermal exposure, sample size, time exposure and acceptance criteria) to the US NRC minimum accepted test methods and acceptance cr iteria of larger sca le IEEE 383-1974.
FAQ Number 06-0022 R1 Page 9 of 10 faq 06-0022 - r1 .doc Detail contentious points if licensee and NRC have not reached consensus on the
facts and circumstances:
None Potentially relevant existing FAQ numbers:
None Response Section:
Proposed resolution of FAQ and the basis for the proposal:
It is recommended that the NRC Methodology for cable test comparisons be used to evaluate the other flame test s as providing a degree of flame retardancy that was equivalent or superior to IEEE 383-1974, since many existing units may have other suitable tests named in design specifications.
If appropriate, provide proposed rewording of guidance for inclusion in the next Revision to NEI 04-02:
Appendix D, Section D.
3.4 - After paragraph 2 that begins, "The range of heat realease rate data for a given type of insula tion --", add a new paragraph that reads:
"The following tables provide a summary of t he testing methods that are more severe than IEEE 1202-1991 (Table 1) or more severe than IEEE 383-1974 (Table 2).
Table 1 Test Name (Test Type) Cable Standard # NFPA 262 FT-/Flame Travel Test (horizontal) CSA 22.2 No. 0.3 Fire Test (Riser/vertical) UL 1666 UL 1581 UL 1685 UL 83 UL 44 CSA22.2 No. 0/3 FT-4/Vertical Flame Test (vertical)
IEEE 1202-1991 Flame test Qualification (vertical) IEEE 383-2003
FAQ Number 06-0022 R1 Page 10 of 10 faq 06-0022 - r1 .doc Table 2 Test Name (Test Type) Cable Standard # NFPA 262 FT-6/Flame Travel Test (horizontal) CSA 22.2 No. 0.3 Fire Test (Riser/vertical) UL 1666 UL 1581 UL 1685 UL 83 UL 44 CSA 22.2 No. 0.3 FT-4/Vertical Flame Test (vertical) IEEE 1202-1991 Flame Test Qualification (vertical) IEEE 383-2003 Vertical Cable Tray Flame Test (vertical) ICEA T-29-520 IEC 60332-3-21 IEC 60332-3-22 Vertical Flame Spread (vertical) IEC 60332-3-23 UL 1581 UL 1685 UL 83 Vertical Tray Flame Test (Vertical)
UL 44 Vertical Cable Tray Flame Test (vertical) ICEA T-30-520 Flame Test (Vertical) IEEE 383-1974 Several NRC documents include the requirements for flame propagation for existing or new electrical cables. In general those documents refer to IEEE 383-1974 and/or IEEE 1202-1991 as the NRC accepted standards for flame propagation.
If cables have been purchased to different standards than those listed in Tables 1 and/or 2, the utility may prepare an equivalency evaluation in order to demonstrate that tested parameters of installed cables are equal to or exceed those specified by IEEE 383-1974 and IEEE 1202-1991 for flam e propagation or spread."