ML20065J677

Testing & Repair of Siren Portion of Alert & Notification Sys for Indian Point Nuclear Power Generating Plant

ML20065J677
Person / Time
Site:	Indian Point
Issue date:	09/14/1982
From:	POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:
Shared Package
ML20065J671	List: ML20065J666 ML20065J677
References
NUDOCS 8210060148
Download: ML20065J677 (8)

Text

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. TESTING AND REPAIR of the SIREN PORTION OF THE ALERT AND NOTIFICATION SYSTEM for the INDIAN POINT NUCLEAR POWER GENERATING PLANT September 14, 1982 l

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I"8210060148 820915 l PDR ADOCK 05000247

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on March 3, 1982, a drill was held to test the Indian Point emergency preparedness procedures which had been established by the Power Authority and Consolidated Edison in conjunction with Various County and state organizations. The cirens were tested as part of this drill.

The siren system covers parts of four Counties, namely, Westchester, Rockland, Putnam and Orange, with 43, 24, 9 and 12 sirens in each of those Counties, respectively. Operation of the sirens is by radio control based on transmission of coded radio signals in each of the four Counties. The Westchester and Orange County installations operate on a high-band, and the Rockland and Putnam County systems operate on a low band. The high band systems .for Westchester *and Orange Counties are a digital system which allows both the growl signal and the alert signal for each individual siren to be transmitted from the County EOC. The growl signal from the EOC operates the receiver, decoder and control equipment at a designated siren to l allow the siren to op, erat.e for about five seconds and is i intended for test purposes only. The actual alert signal is  !

approximately three minutes in duration. In Orange County the I control equipment is located in the EOC in Goshen, and in f Westchester, the control equipment is located in the County l Parkway Police Headquarters in Hawthorne. The equipment for the other two Counties, Putnam, and Rockland is a low-band system l and is also operated from the County EOC's.

The March 3rd exercise indicated that some of the sirens had not been heard by residents living near those sirens. The utilities jointly conducted a complete re-test on the sirens. By -

completion of the testing program, all of the inoperative sirens had been repaired and were functional. The corrections were i accomplished prior to June 1, 1982. I The re-test activity was organized by Power Authority and Con Edison. The tests included: circuit parameters such as received signal strength, receiver sensitivity and circuit voltages; they also included functional tests of controls, siren rotation, growl and alert functions; an( components such as fuses, counters and relays.

! Based on a survey conducted by the utilities, of all the 88 sirens tested on March 3rd, 1982 sixty eight were reported to have been heard. Nine were reported as not having been heard; these have been repaired and the remaining were in remote park locations. Of these eleven remote sirens only six required corrective action. Appendix 'A' provides details for the repairs to this total of 15 sirens. I i

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.The approach for this program, was to correct any observed questionable condation in any siren even though it was not confirmed that the condition could contribute to a malfunction of the siren. These actions included such conditions as crimped

wire, weather tight fittings and adjustment of thermal relays.

Also as a result of the complete system re-test the analysis shows 15 additional sirens as having had corrections performed on parts that could have precluded operation. Appendix 'B' details the actions taken on these 15 sirens.

It is expected that periodic testing will be conducted in accordance with recommended guidance provided in NUREG 0654 Rev.

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• APPENDZX 'A' and APPENDIX 'B' NOTE: For descriptive purposes the siren system is subdivided into subsystems as follows:

1. The Communications subsystem consisting of radio transmitters and receivers, encoders and decoders, antennas and antenna cables.

2. The siren subsystem consisting of the siren itself, siren / motor couplings, motor, motor circuits, and motor control devices.

3. The Power subsystem including transformers, service entrances and interconnecting power lines.

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APPENDIX A .

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TEST DETAILS .

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-1 i. W C ')hliUN ICATIONS SIREN POWER .

0. SUBSTYSTEM SUBSYSTEM SUBSYSTEM OTHER

-2 l Returned Rcvr- l l l.

I defective RG-8u 1 I I .

I replaced 1 l l l 1 1 I

-27

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-4 6

• l l Counter works on l l l l growl only - 1 I l l Repaired l l 1 I i 1

-56 l Returned revr. l l l l RG-8/u replaced l l . l l Defective l l l 1 1 I I

-58 l l Replaced siren I l l l l 1

-60 l Defective RG-8/u 1 l l l replaced. l l l l , I I I

-61 l Loose antenna l l I l connector. Cable l I l l and Connectors l l l l Replaced. I I l l l 1

- 7 8

• lI I I I I I I I l Starting capacitors l

-84 l l '

l l replaced. l I I I 1 1

• Denotes sirens that functioned properly during retest subsequ,ent to March 3

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• TEST DETAILS ,'

SIREN COMMUNICATIONS SIREN POWER NO. SUBSTYSTEM SUBSYSTEM SUBSYSTEM OTHER I I I l

-3 l Replaced Revr./ l l l l Decoder Boards l l l l RG-8/u and l l l l Connectors. l l l 1 I I I

-7 l Rewired phono. l Blown 100 A Fuse l l l conn. on Revr Board l l l l 1 1 I

-9 l Defective RG 8/u l l l l Antenna replaced.. l l .- l l 1 1 I

-10 l Defective antenna l l l l connector repaired.l l l l l l 1

-50 l Nrong antenna l l l Corrected I replaced. I  ! I bulkhead fitting l l l l problem

-16 Open starter motor winding / siren replaced

APPENDIX B ,

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TEST DETAILS .

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SIREN COMMUNICATIONS SIREN POWER NO. SUBSTYSTEM SUBSYSTEM SUBSYSTEM OTHER I I I l- -

-5 l Inadequate signal l l AC Line crimped l l level, installed l l in Service Box l l new Yagi Antenna. l l Transformer 900 ft. l l Replace defective l I from siren, excessive l l Revr. Board & l l voltage drop, trans- l l PG-58/u. l l former relocated. l l l l l

-12 1 Defective RG-8/u l Thermal relay l l I replaced. l tripped.Improperlyl l l l set, reset to 100%l .

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-21 l No center pin on l l ' l l antenna. Defective l l l l RE-8/u replaced. l l l l 1 I i

-24 l l Replaced start l l l l capacitor relay l l 1 I l l

-25 l No received signal l Siren delective-1 l l l l open winding, one l l l l shorted. Thermal l l l l relay reset to l l l l 100%. l l l l l l

! -26 l No center pin on l l l l antenna, antenna l l l l repaired. l l l l l l 1

-30 1 Decoder inoperative l Thermal relay l l l repaired I adjusted to 100% l l 1 l l 1 i

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APPENDIX B TEST DETAILS , .'.

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SIREN COMMUNICATIONS SIREN POWER .

NO. SUBSTYSTEM SUBSYSTEM SUBSYSTEM OTHER ~~

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-32 l l Thermal relay I l I which tripped l l l l l breaker, at 25% l l l l was reset to 36% l l 1 I I I

-35 1 Defective antenna l Thermal relay l l l

l pin released. I reset to 36%. l l l l l l 1 I i

-39 I Revr. misaligned l l l l and repaired. De- l l l l fective RG-58/u & l Repaired loose l  ? I l connectors replacedI splice to motor i l l incorrect antenna l l l l with MWH-150.

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-40 l Defective RG-58/u l l l l replaced. l I l I I I i

-41 l Defective RG-58/u l l l l replaced. l l 1 I . I I I

-49 I l Run capacitors l I l l not connected. I l l I I l

-65 I Defective RG-8/u I I l l replaced. Defcetivel I I l RG-58/u. replaced. l l l l l l 1

-77 l Re-soldered RF plugl l l l on PC Board. Wrong l l l l Antenna replaced. l l 1 I I I I NOTES: 1. After 4/20/82, the fuses were changed routinely to Slow-blow during the retest and maintenance program.

2. All thermal relays set to 100% on single phase systems only.

3. Af ter 4/5/82 and performance of the initial growl test, al1 antenna cables were routinely replaced.

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