ML18059A887

Proposed Tech Specs Reflecting Addition of Surveillance Item 10 to Table 4.2.1 Re Min Frequencies for Sampling Tests & Three Paragraphs to Basis for Proposed Section 3.17 Re Instrumentation Sys

ML18059A887
Person / Time
Site:	Palisades
Issue date:	03/11/1994
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
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ML18059A886	List: ML18059A885 ML18059A887
References
NUDOCS 9403170120
Download: ML18059A887 (13)

Text

ATTACHMENT Consumers Power Company Palisades Plant Docket 50-255 INSTRUMENTATION AND CONTROL TECHNICAL SPECIFICATION CHANGE REQUEST Revised Proposed Pages 9403170120 940311 PDR ADOCK 05000255 P

PDR March 10,1994 12 Pages

4.1 OVERPRESSURE PRO~TION SYSTEM TESTS Sur~eillance Requirement In addition to the requirements of Specification 4.0.5, each PORV shall be demonstrated OPERABLE by:

1.

2.

3.

(a)

(b)

4.

(a)

(b)

5.

(a)

(b)

(c)

6.

Basis Testing the PORVs in accordance with the inservice inspection requirements for ASME Boiler and Pressure Vessel Code,Section XI, Section IWV, Category B valves.

Performance of a CHANNEL CALIBRATION on the PORV actuation channel at least once per 18 months.

When the PORV flow path is required to be OPERABLE by Specification 3.1.8.1:

Performing a complete cycle of the PORV with the plant above COLD SHUTDOWN at least once per 18 months.

Performing a complete cycle of the block valve prior to heatup from COLD SHUTDOWN, if not cycled within 92 days.

When the PORV flow path is required to be OPERABLE by Specification 3.1.8.2:

Performance of a CHANNEL FUNCTIONAL TEST on the PORV actuation channel, but excluding valve operation, at least once per 31 days.

Verifying the associated block valve is open at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

The required PCS vent path shall be verified OPERABLE by:

Verifying the PCS vent path open at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> when a vent pathway through a valve which is not locked, sealed, or otherwise secured in position is being used for overpressure protection.

Verifying both PORVs and both PORV block valves open at least once per 7 days when open PORVs are used as an alternative to venting the PCS for overpressure protection.

Verifying the PCS vent path open at least once per 31 days when being used for overpressure protection.

Both High Pressure Safety Injection pumps shall be verified inoperable at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, unless the reactor head is removed, when either PCS cold leg temperature is < 260°F, or when both shutdown cooling suction valves, M0-3015 and M0-3016, are open.

With the reactor vessel head installed when the PCS cold leg temperature is less than 260°F, or if the shutdown cooling system isolation valves M0-3015 and M0-3016 are open, the start of one HPSI pump could cause the Appendix G or the shutdown cooling system pressure limits to be exceeded; therefore, both pumps are rendered inoperable.

Amendment No. 130, 149, 4-6

• 4.2 EQUIPMENT AND SAM~NG TESTS Appl.icabil ity Applies to plant equipment and conditions related to safety.

Objective To specify the minimum frequency and type of surveillance to be applied to critical plant equipment and conditions.

Specifications Equipment and sampling tests shall be conducted as specified in Tables 4.2.1, 4.2.2 and 4.2.3.

Basis Sampling and Equipment Testing The equipment testing and system sampling frequencies specified in Tables 4.2.1, 4.2.2 and 4.2.3 are considered adequate, based upon experience, to maintain the status of the equipment and system so as to assure safe operation. Thus, those systems where changes might occur relatively rapidly are sampled frequently and those static systems not subject to changes are sampled less frequently.

Amendment No. 20, 81, 4-7

• 4.2 EQUIPMENT AND SAM~NG TESTS Basis (continued)

The operability of the equipment and systems required for the control of hydrogen gas ensures that this equipment will be available to maintain the hydrogen concentration within containment below its flammable limit during post-LOCA conditions.

Either recombiner unit or the purge system is capable of controllin~ the expected hydrogen generation associated with 1) zirconium-water reactions, 2) radiolytic decomposition of water and 3) corrosion of metals within containment. These hydrogen control systems are consistent with the recommendations of Regulatory Guide 1.7, "Control of Combustible.Gas Concentrations in Containment Following a LOCA."

The post-incident recirculation systems provide adequate mixing of the containment atmosphere following a LOCA.

This mixing action will prevent localized accumulations of hydrogen from exceeding the flammable limit.

Proper hydrogen recombiner operation, after a LOCA, is assured by measuring (and adjusting, if necessary) the amount of electrical power provided to the recombiner unit. The temperature measuring equipment (thermocouple) is provided for convenience in testing and is not considered necessary to assure proper operation.

Amendment No. 2-,

4-8

• 4.2 EQUIPMENT AND SA~NG TESTS

.1. Reactor Coolant Saq>les

2. Reactor Coolant Boron

3. SIRW Tank Water Saq>le

4. Concentrated Boric Acid Tanks

5. SI Tanks TABLE 4.2.1 Minimum Frequencies for Sampling Tests Test Gross Activity Deter-mination Gross Gamma by Fission Product Monitor Isotopic analysis for dose equivalent 1-131 concentration Radiochemical for E determination Isotopic analysis for iodine, including 1-131, 133, 135 Chemistry CCL and 02)

Chemistry CF>

Boron Concentration Boron Concentration Boron Concentration Boron Concentration Frequency 3 Times/7 days with a maximum of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> be-tween samples CT ave greater than 500°F).

Continuous when T ave is greater than 500"F" 1*

1/14 days during power operation 1/6 months 121 a) Once/4 hours, whenever dose equivalent 1*131 exceeds 1.0 µCi/gram, and b) One sample between 2 and 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> follow-ing a thermal power change exceeding 15%

of rated thermal power within a one hour period.

3 times/7 days with a maximum of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> between samples CT ave greater than 210"F).

Once/30 days and follow-ing modifications or repair to the primary coolant system involving welding.

Twice/Week Monthly Monthly Monthly FSAR Section REFERENCE None None None None None None None 6.1.2 Amendment No. 20, 74, 113, 4-9

4.2 EQUIPMENT AN~AMPLING TESTS Table 4.2.1 (continued)

Minimum Frequencies for Sampling Tests

6. Spent Fuel Pool

7. Secondary Coolant Test Boron Concentration Bulk Water Temperature Coolant Gross Radio-activity Isotopic Analysis for Dose Equivalent I-131 Concentration Frequency Monthly171 Continuously when bundles are stored in tilt pit racks with less than one year decay 161 3 times/7 days with a maximum of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> between samples a) 1 per 31 days, whenever the gross activity determination indicates iodine concentrations greater than 10%

of the allowable limit b) 1 per 6 months, whenever the gross activity determination indicates iodine concentrations below 10% of the allowable limit FSAR Section Reference 9.4 None None (1) A daily sample shall be obtained and analyzed if fission product monitor is out of service.

(2) After at least 2 EFPD and at least 20 days since the last shutdown of longer than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

(3, 4, 5) Deleted.

(6) Reference Specification 3.8.5 for maximum bulk water temperature and monitoring requirements.

(7) Reference Bases section of Specification 3.8 and Section 5.4.2f of the Design Features for minimum boron concentration (~1720 ppm).

Amendment No. 29, 110, 123, 4-10

---~

4.2 EQUIPMENT SA~ING AND TESTS Table 4.2.2 Minimum Freguencies for Eguigment Tests FSAR Item Test Freguenc~

Reference

1.

CONTROL RODS Dro1 Times of All Refueling 7.6.1.3 Ful Length Rods

2.

CONTROL RODS Partial Movement Every 92 Days 7.6.1.3 of all Rods (Minimum of 6 In}

3.

Pressurizer Safety Set Point One Each 4.3.7 Valves Refueling

4.

Main Steam Safety Set Point Five Each 4.3.4 Valves Refueling

5.

Refuelin~ System Functioning Prior to 9.11.4 Interloc s Refueling Operations

6.

Service Water Functioning Refueling 9.1. 2 System Valve Actuation on SIS and RAS

7.

Primary System Leakage Evaluate Daily 4.7.1

8.

Diesel Fuel Supply Fuel Inventory Daily 8.4.1

9.

Boric Acid Verify proper Daily Heat Tracing temperature readings.

10. Safety Injection Verify that level and Each Shift Tank Level and pressure indication Pressure is between inde1endent high high/low a arms for level and pressure.

Amendment No. 12, 81, 133, 152, 155, 157, 4-11

4.2 EQUIPMENT SA~ING AND TESTS Table 4.2.2 (continued)

Minimum Frequencies for Equipment Tests

11.

Hydrogen Recombiners Each hydrogen recombiner unit shall be demonstrated operable:

a.

At least once per 6 months by verifying functional test that the minimum heater increases to ~700°F* within 90 minutes.

increase power setting to maximum power that the power meter reads ~60 Kw.

during a recombiner unit sheath temperature Upon reaching 700°F, for 2 minutes.

Verify

b.

At least once per refueling cycle by:

1.

Performing a channel calibration of all recombiner instrumentation and control circuits.

2.

Verifying through a visual examination that there is no evidence of abnormal conditions within the recombiners (i.e., loose wiring of structural connections, deposits of foreign materials, etc).

3.

Verifying the integrity of all heater electrical circuits by performing a continuity and resistance to ground test immediately following the above required functional test.

The resistance to ground for any heater element shall be

~10,000 ohms.

• As measured by installed or portable temperature measuring instruments.

Amendment No. 81, 99, 4-12

4.2 EQUIPMENT SA~ING AND TESTS Table 4.2.2 (continued)

Minimum Frequencies for Equipment Tests

12.

Iodine Removal System The iodine Removal System shall be ~emonstrated operable:

a.

At least once per 31 days by verifying that each valve (manual, power operated or automatic) in the flow path that is not locked, sealed or otherwise secured in position, is in its correct position.

b.

At least once per 6 months by:

1.

Verifying the volume of sodium hydroxide in tank T-103.

2.

Verifying the concentration of sodium hydroxide in T-103.

13.

Containment Purge and Ventilation Isolation Valves The Containment Purge and Ventilation Isolation Valves shall be.

determined closed:

a.

At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by checking the valve position indicator in the control room

b.

At least once every 6 months by performing a leak rate test between the valves.

14.

Main Feedwater Isolation

a.

Verify that the Main Feedwater Regulating valve and the associated bypass valve close on an actual or simulated Containment High Pressure (CHP) signal once each 18 months.

b.

Verify that the Main Feedwater Regulating valve and the associated bypass valve close on an actual or simulated Steam Generator Low Pressure (SGLP) signal once each 18 months.

Amendment No. 81, 90, 158, 4-13

-* I 4.2 EQUIPMENT SA~ING AND TESTS e

Table 4.2.3 HEPA FILTER AND CHARCOAL ABSORBER SYSTEMS Control Room Ventilation and Isolation System (Rated flow: 765 cfm) Fuel Storage Area HEPA/Charcoal Exhaust System (Rated flow: 10,000 cfm, two fans or 7300 cfm, one fan).

The filters in each of the above systems shall be demonstrated operable:

a.

b.

At least once per 31 days by initiating, from the Control Room, flow through the HEPA filter and charcoal adsorbers and verifying that the system operates for at least 15 minutes.

At least once per refueling cycle or (1) after any structural maintenance on the HEPA filter or charcoal adsorber housings, or (2) following major painting, fire or chemical release in any ventilation zone communicating with the system when the HEPA Filter or charcoal adsorbers are in operation by:

1.

Verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b. of Regulatory Guide 1.52, Revision 2, March 1978, meets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, Revision 2, March 1978 except that the Fuel Storage Area shall have a methyl iodide limit of 94% instead of 99,, or replacing with charcoal adsorbers meeting the specifications of Regulatory Guide 1.52, Position C.6.a, Revision 2, March 1978.

2.

Verifying that the HEPA filter bank removes greater than or equal to 99% of the DOP when they are tested in-place in accordance with ANSI N510-1975 while operating the system at its rated flow

+/- 20%.

3. Verifying that the charcoal adsorber removes greater than or equal to 99% of a hydrogenated hydrocarbon refrigerant test gas when they are tested in-place in accordance with ANSI N510-1975 while operating the system at its rated flow+/- 20%.

c.

At least once per refueling cycle by:

1.

2.

Verifying that the pressure drop across the combined HEPA filter and charcoal adsorber bank is less than (6) inches Water Gauge while operating the system.

Verifying that on a containment high-pressure and high-radiation test signal, the system automatically switches into a recirculating mode of operation with flow through the HEPA filter and charcoal adsorber bank.

(Control Room ventilation only.)

Amendment No. 8-l-,

4-14

4.2 EQUIPMENT SA~ING AND TESTS

3.

4.

Table 4.2.3 (continued)

HEPA FILTER AND CHARCOAL ABSORBER SYSTEMS Verifying that the system maintains the Control Room at a positive-pressure of greater than or equal to 0.10 inch WG relative' to the viewing gallery (dPIC 1834) during system operation.

(Control Room ventilation only.)

Verifying that with the ventilation system exhausting through the HEPA/Charcoal Filters at its rated flow+/- 20%, the bypass flow through damper 1893 is less than 1% of total flow.

(Fuel Storage Area only.)

d.

After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> (see Note 1) of charcoal adsorber operation by:

Verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b. of Regulatory Guide 1.52, Revision 2, March 1978, meets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, Revision 2, March 1978 except that the Fuel Storage Area shall have a methyl iodide limit of 94% instead of 99%,

or replacing with charcoal adsorbers meeting the specifications of Regulatory Guide 1.52, position C.6., Revision 2, March 1978.

e.

After each complete or partial replacement of a HEPA filter bank by:

Verifying that the HEPA filter bank removes greater than or equal to 99% of the DOP when they are tested in-place in accordance with ANSI N510-1975 while operating the system at its rated flow+/- 20%.

f.

After each complete or partial replacement of a charcoal adsorber bank by:

g.

Note 1.

Verifying that the charcoal adsorber removes greater than or equal to 99% of a hydrogenated hydrocarbon refrigerant test gas when they are tested in-place in accordance with ANSI N510-1975 while operating the system at its rated flow +/-20%.

Verify that the Control Room temperature is <120°F once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> when the temperature in the Control Room reaches 105°F.

Should the 720-hour limitation occur during a plant operation requiring the use of the HEPA Filter and charcoal adsorber - such as during a refueling - testing may be delayed until the completion of the plant operation or up to 1,500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> of filter operation whichever occurs first.

Amendment No. 8-l-,

4-15

-3.17 INSTRUMENTATIO YSTEMS Basis:

Instrumentation Systems 3.17 The Instrumentation OPERABILITY requirements are listed in six sections, 3.17.1 through 3.17.6. The associated surveillance requirements are listed in secttons 4.17.1 through 4.17.6, respectively.

Each section of 3.17 contains a specification, which contains the OPERABILITY requirement; an Applicability statement, which determines the plant conditions when the specification is required to be met; and a list of Action statements, which provide compensatory required actions to be completed when specified parts of the specification are not met, as required by Specification 3.0.1. If the specification is not met and Action statements are not provided for the existing conditions, Specification 3.0.3 applies.

Completion of required Action:

The listed Action is required to be completed within the specified time if the conditions of the specification are not met.

If, prior to expiration of the specified completion time, the required conditions are restored, completion of the Action is not required, as stated in Specification 3.0.2.

Each specified completion time starts at the time it_is discovered that the Action statement is applicable.

The completion time of "immediately" does not mean "instantaneously",

rather it implies "start as quickly as plant conditions permit and continue until completed."

Required Channels:

Specification 3.17 requires all instrument and control channels listed under "Required Channels" to be OPERABLE.

If fewer channels are OPERABLE than specified under "Required Channels", the associated Action must be completed.

Safety is not compromised, however, by continuing operation with certain instrumentation channels out of service since provisions were made for this in the plant design.

This specification outlines Limiting Conditions for Operation to assure the effectiveness of the safety related instrumentation, and Action to be taken when any of the required channels are inoperable.

Minimum OPERABLE Channels:

Several tables in section 3.17 contain a "Minimum OPERABLE Channels" column, this column specifies the minimum number of channels which must be OPERABLE for continued plant operation.

If the number of OPERABLE channels falls below the "Minimum OPERABLE Channels", the plant must be shutdown in accordance with the final Action statement of each section.

In a few instances, the entry in the Minimum Operable Channels column is "O".

This occurs under two conditions, when the corrective actions specified are sufficient to allow continued operation even if there are none of the subject instrument channels OPERABLE, and when it is not practical to require that the plant be placed in a condition where the affected equipment is not required.

An example of the first condition is the Engineered Safeguards Pump Room Monitor, Table 3.17.3 #4.a & b.

These monitors are necessary to provide isolation of the ventilation from the associated rooms in the event of a leak of highly contaminated fluid in the room.

If the associated damper is closed, as the action requires, the safety function is already fulfilled and operation may continue without the monitor being OPERABLE.

B 3.17-1 Revision:

02/21/94

"3.17 INSTRUMENTATIOI YSTEMS Basis:

Instrumentation Systems 3.17 (continued)

_ An example of the second condition is the Neutron Flux Monitoring required during shutdown, Table 3.17.6 #1.

These monitors are required to provide continuous assurance of adequate shutdown mar~in. The action provides only periodic verifications of shutdown margin.

Since this requireme~t for neutron flux monitoring applies whenever the reactor is below 10- % power with fuel in the reactor, it is impractical to require the plant to be placed in a condition where the affected equipment is not required.

Operational Bypasses:

During certain operating conditions, some of the required functions may be bypassed to prevent spurious actuation or undesired actuation due to normal plant activities such as heatup and cooldown.

This does not imply that they do not need to be OPERABLE!

These bypasses are automatically actuated or enabled, and are automatically removed when plant conditions reach the conditions where the protection is designed to apply.

Bypasses of this nature are referred to as "Operational Bypasses." The trips or automatic actuations which are bypassed may be relied upon to function if an accident should occur, even though they are bypassed.

The way that protection may be provided, yet spurious or undesired functioning avoided is by having the bypass automatically removed prior to the trip or actuation being required.

One example of an operational bypass is the Zero Power Mode Bypass:

Manual actuation of this bypass is enabled when the wide range nuclear instrument channels indicate below 10*43 power.

If an inadvertent rod withdrawal should cause a power excursion, the bypass would be removed when indicated power went above 10*43, and the bypassed trips would be available to terminate the event.

The conditions under which these operational bypasses are permitted are listed for each affected function.

Several instrument channels provide more than one required function.

Table B 3.17-1 provides a listing of these channels and the specifications which they affect.

B 3.17-2 Revision:

02/21/94