ML20203F196
| ML20203F196 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 07/24/1986 |
| From: | George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| SBN-1170, NUDOCS 8607300132 | |
| Download: ML20203F196 (8) | |
Text
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George S. Thomas Vice President-Nuclear Production July 24, 1986 SBN-ll70 Niw Hampshire Yankee Division T.F. B7.1.2 United States Nuclear Regulatory Commission Washington, DC 20555 Attention:
Mr. Vincent S. Noonan, Project Director PWR Project Directorate #5
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 Subj ect:
Seabrook Technical Specification 3.11.2.6, Explosive Gas Mixture-Cubicles
Dear Sir:
During recent discussions with your staf f regarding Seabrook Station Technical Specification 3.11.2.6 it was determined that this specification was not necessary. However, to satisfy your staff's concern regarding this matter, it was requested that NHY verify that station operating procedures cover necessary requirements described in the existing technical specification.
It has been determined that existing station operating procedures do verify the requirements of the existing technical specification. This verification satisfies the staff request and therefore Specification 3.11.2.6 can be deleted from the Seabrook Station Technical Specifications.
Deletion of this Specification affects two tables in Section 3/4.3 of the Seabrook Technical Specifications. Enclosed for your use are marked up copies of the affected Technical Specifications with eppropriate changes. These changes have been discussed with your staff and submittal of this verification completes our commitment on this matter.
Should you have any questions regarding this matter, please contact Mr. Warren J. Hall at (603) 474-9574, extension 4046.
Very truly yours, 8607300132 860724 PDR ADOCK 05000443 A
- ryo George S. Thomas Enclosures cc: ASLB Service List i
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P.O. Box 300. Seabrook, NH 03874. Telephone (603) 474 9574
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ENCLOSURE TO SBN-1170 f
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/3 TABLE 3.3-13 (Continued)
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RADI0 ACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION E
S MINIMUM CitANNELS INSTRUMENT OPERABLE APPLICABILITY ACTION U
4.
TURBINE GLAND SEAL CONDENSER EXilAUST e
a.
Iodine Sampler 1
35 b.
Particulate Sampler 1
35 c.
Sampler Flow Rate Indicator 1
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TABLE 3.3-13 (Continued)
TABLE NOTATIONS At all times.
During RADI0 ACTIVE GAS WASTE SYSTEM operation.
- When the gland seal exhauster is in operation.
Noble Gas Monitor for this release point is based on the main condenser air evacuation monitor.
ACTION STATEMENTS ACTION 32 -
With the number of channels OPERABLE less than the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided the flow rate is estimated at least once per'4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
ACTION 33-With the number of channels OPERABLE less than the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue provided grab samples are taken at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and these samples are analyzed for radioactivity within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
For RM-6504, RM 6503 may be used as an alternate.
ACTION 34 -
With the number of channels OPERABLE less than the Minimum Channels OPERABLE requirement, operation of this RADI0 ACTIVE GAS WASTE SYSTEM may continue provided grab samples are collected at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and analyzed within the following 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
ACTION 35 -
With the number of channels OPERABLE less than the Minimum Channels OPERABLE requirement, effluent releases via the affected pathway may continue provided samples are continuously collected with auxiliary sampling equipment as required in the ODCM.
ACTION 36 -
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i SEABROOK - UNIT 1 3/4 3-63
- l TABLL. 3-6 RADI0 ACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS
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o" CilANNEL MODES FOR WilICil CilANNEL 50tlRCE CHANNEL OPERATIONAL SURVEILLANCE '
E INSTRUMENT CllECK C!!ECK CALIBRATION TEST IS REQUIRED q
1.
RADIOACTIVE GAS WASTE SYSTEM EXPLOSIVE GAS MONITORING SYSTEM 0xygen Monitor D
N.A.
Q M
(Process) 2.
PLANT VENT-WIDE RANGE GAS MON!iOR
- a. Noble Gas Activity Monitor D
M R(3)
Q(2)
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- b. Iodine Sampler W
N.A.
N.A.
N.A.
T
- c. Particulate Sampler W
N.A.
N.A.
N.A.
E
- d. Flow Rate Monitor D
N.A.
R Q
- e. Sampler Flow Hate Monitor D
N.A.
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RADI0 ACTIVE GASEOUS EFFLUENT M0!!ITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS 8
O CHANNEL MODES FOR WHICH CllANNEL SOURCE CHANNEL OPERATIONAL SURVEILLANCE E
INSTRUMENT CllECK CllECK CALIBRATION TEST IS REQUIRED Q
s 3.
GASEOUS WASTE PROCESSING SYSTEM (Providing Alarm and Automatic Termination of Release)
- a. Noble Gas Activity Monitor D
N.A.
R Q(1) 4.
TURBINE. GLAND SEAL CONDENSER EXilAUST #
- a. Iodine Sampler W
N.A.
N.A.
N.A
- b. Particulate Sampler W
N.A.
N.A.
N.A.
- c. Sampler Flow Rate Indicator D
N.A.
N.A.
N.A.
N
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TABLE 4.3-6 (Continued)
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TABLE NOTATIONS At all times.
During RADIOACTIVE WASTE GAS SYSTEM operation.
When the gland seal exhauster is in operation.
- The CHANNEL OPERATIONAL TEST for the flow rate monitor shall consist of a verification that the Radiation Data Management System.(RDMS) indicated flow is consistent with the operational status of the plant.
Noble Gas Monitor for this release point is based on the main condenser air evacuation monitor.
(1) The DIGITAL CHANNEL OPERATIONAL TEST shall also demonstrate that automatic isolation af this pathway and control room alarm annunciation occurs if the instrument indicates measured levels above the Alarm / Trip Setpoint.
(2) The Digital CHANNEL OPERATIONAL TEST shall also demonstrate that control room alarm annunciation occurs if the instrument indicates measured levels above the Alarm Setpoint.
(3) The iniital CHANNEL CALIBRATION shall be performed using one or more of the reference standards certified by the National Bureau of Standards (NBS) or using standards that have been obtained from suppliers that participate in measurement assurance activities with NBS. These standards shall per-mit calibrating the system over its intended range of energy and measure-(
ment range.
For subsequent CHANNEL CALIBRATION, sources that have been related to the initial calibration shall be used.
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-_....,i N % The CHANNEL CALIBRATION shall include the use of standard gas skmples containing a nominal:
a.
One volume percent oxygen, balance nitrogen, and b.
Four volume percent oxygen, balance nitrogen.
All Cxp's
[ K The hhannel calibra M shall be performed using sources of various activit~ies covering the measurement range of the monitor to verify that the response is linear.
Sources shall be used to verify the monitor response only for the intended energy range.
L SEABROOK - UNIT 1 3/4 3-66
DI0 ACTIVE EFFLUENTS k
G EFFLUENTS EXPLOS AS MIXTURE - CUBICLES LIMITING COND ON FOR OPERATION
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3.11.2.5 The conc tration of hydrogen in the TASTE GAS H UP SYSTEM cubicles shall be 11 'ted to le:s than or equal to 4% by..olume.
APPLICABILITY: At all
'mes.
ACTION:
a.
With the concentrat of hydrogen.
the WASTE GAS HOLOUP SYSTEM cubicles greater than
- by volu, reduce the hydrogen concentra-tion to the above limit act ing the hydrogen purge system and isolating and purging the ing component with nitrogen.
In addi-tion; unnecessary personne om the area should be evacuated.
b.
The provisions of Speci ~ cations 0.3 and 3.0.4 are not applicable.
SURVEILLANCE REQUIREMENTS 4.11.2.5 The concentra,on of hydrogen in each WASTE G OLOUP SYSTEM cubicle shall be determined t e within the above limit by contin sly monitoring the waste gases in the W' E GAS HOLDUP SYSTEM cubicle with the m tor required OPERABLE by Table
-13 of Specification 3.3.3.10.
For the cu
'cle(s) with an automatically tuated hydrogen purge system it should be demon ated at least once per months that the hydrogen purge system will automat -lly actuate on a h hydrogen signal.
m SEABROOK - UNIT 1 3/4 11-10
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