July 22, 1994

Contract #TW0592

**SPECIAL SPECIFICATION**

**SECTION 16922**

**[ENVIRONMENTAL SYSTEMS CONTROL]{.underline}**

**[TRITIUM MONITORING - ROOM MONITORS]{.underline}**

**[PART 1 - GENERAL]{.underline} [Page]{.underline}**

1.01 Description 2

1.02 Quality Assurance 2

1.03 References 3

1.04 Submittals 4

**[PART 2 - PRODUCTS]{.underline}**

2.01 Equipment 6

**[PART 3 - EXECUTION]{.underline}**

3.01 Construction 11

3.02 Acceptance Test 12

**SPECIAL SPECIFICATION**

**SECTION 16922**

**[ENVIRONMENTAL SYSTEMS CONTROL]{.underline}**

**[TRITIUM MONITORING - ROOM MONITORS]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [DESCRIPTION]{.underline}**

> A. This specification describes the requirements for tritium room air
> monitoring instrumentation. The equipment shall supply output to a
> data acquisition and control system (DACS) and to remote panel meters
> for monitoring tritium levels.

**1.02 [QUALITY ASSURANCE]{.underline}**

> A. Supplier Responsibility. Unless otherwise specified in the purchase
> order, the supplier shall be responsible for the performance of all
> inspections and tests specified herein. Except as otherwise specified
> in the purchase order, the supplier may use his own facility or other
> commercial facilities for the performance of inspections and tests
> (subject to buyer approval). The buyer reserves the right to witness
> and/or perform any inspections and tests as deemed necessary to assure
> that all prescribed requirements are satisfied.
>
> 1\. Design Drawings. The supplier shall submit to the buyer the design
> drawings. These drawings shall be submitted to the buyer for approval
> and no fabrication shall begin by the supplier until written approval
> is received from the buyer. The written approval shall be submitted to
> the supplier within 10 working days of the buyer receipt of the
> drawings.
>
> B. Power Burn In. Before beginning acceptance testing, the instrument
> shall have had 100 hours of operating time at rated power, and the
> instrument shall have been operated for 40 consecutive hours without
> failure.
>
> C. Acceptance Test. The instrument shall not be shipped until an
> acceptance test has been successfully completed at the supplier\'s
> facility. Each parameter of the instrument specified in this document
> shall be subject to test and/or inspection to verify satisfactory
> performance, workmanship, and suitability for the purpose intended.
> The supplier shall provide the buyer written notice of the schedule
> for the acceptance test at least 10 days before the tests are to
> begin.
>
> 1\. Acceptance Test Approval/Rejection. Any failure or out of
> tolerance condition occurring during an acceptance test shall
> constitute an acceptance test failure. Rejected tests may be repeated
> at the discretion of the buyer after buyer-approved corrective actions
> have been implemented by the supplier. The number and type of defects
> shall determine the extent of retesting required.

**1.03 [REFERENCES]{.underline}**

> A. Sandia Laboratories Documents. The following documents of the issue
> in effect on the data of the invitation for bids, or request for
> proposal, form part of this specification to the extent specified
> herein.
>
> 1\. Electrical Specification Section 16001.
>
> 2\. Electrical Specification Section 16120.
>
> B. Military Documents. The following documents of the issue in effect
> on the data of the invitation for bids, or request for proposal, form
> part of this specification to the extent specified herein. Where a
> conflict arises between these documents and statements made herein,
> the statements in this specification shall govern.
>
> 1\. MIL-STD-1472 Human Engineering Design Criteria for Military
> Systems, Equipment and Facilities
>
> 2\. MIL-STD-45662 Calibration Systems Requirements
>
> 3\. MIL-STD-189 Racks, Electrical Equipment, 19-inch and Associated
> Panels
>
> 4\. MIL-STD-3126 Connectors, Plug, Electrical, Series 1, Crimp Type,
> Straight, Bayonet Coupling
>
> 5\. MIL-C-26482 Connector, Electrical, (Circular, Miniature, Quick
> Disconnect. Environment Resisting) Receptacles and Plugs, General
> Specifications For
>
> (Copies of government documents may be obtained from the
> Superintendent of Documents. U. S. Government Printing Office,
> Washington, DC 20402.)

**1.04 [SUBMITTALS]{.underline}**

> A. Documentation. The following information shall accompany the
> instrument: (1) operating/maintenance manual, (2) all schematics,
> drawings, and (3) a comprehensive parts list. The
> operating/maintenance manual shall contain at least the following
> paragraphs:
>
> 1\. Introduction
>
> a\. Scope
>
> b\. General Description
>
> c\. Principle Specifications
>
> d\. Performance Specifications
>
> e\. Measurement Ranges
>
> f\. Alarm Systems
>
> g\. Pneumatic
>
> h\. Environmental Temperature
>
> i\. Physical
>
> j\. Equipment Supplied
>
> 2\. Operating Principles
>
> a\. General
>
> b\. Pneumatic
>
> c\. Dust Filter
>
> d\. Low Flow Alarm Sensor
>
> e\. Ion Trap
>
> f\. Ionization Chamber
>
> g\. Electronics
>
> h\. Ion Chamber
>
> i\. Electrometer
>
> j\. Main Amplifier and Noise Filter
>
> k\. Radon Alpha Discrimination
>
> l\. Logarithmic \"Amplifier\"
>
> m\. Alarm Circuits
>
> n\. Power Supplies
>
> o\. Rear Panel Interface
>
> 3\. Instructions
>
> a\. Unpacking Instructions
>
> b\. Operating Instructions
>
> c\. Location
>
> d\. Before Applying Power
>
> e\. Upon Applying Power
>
> f\. Warm Up
>
> g\. Alarm Settings
>
> h\. Ionization Chamber High Voltage
>
> i\. Radioactivity Measurement
>
> 4\. Calibration
>
> a\. Linearity of Response
>
> b\. Verification of Calibration
>
> c\. Interchangeability
>
> B. Acceptance Test Failure Report. Any failure(s) shall be documented
> by a report concerning the cause of the failure(s) and corrective
> actions taken.
>
> C. Supplier Acceptance Test. The supplier shall prepare and submit to
> the buyer (30 days minimum prior to test) the acceptance test
> procedure to be performed by the supplier at the supplier facilities.
>
> D. Buyer Acceptance Test. The buyer shall submit to the supplier,
> within 10 days after contract award, the acceptance test procedure to
> be performed upon receipt of the instrument.
>
> E. Supplier Acceptance Test Report. The supplier shall prepare and
> submit to the buyer a report describing the results of the acceptance
> tests specified in paragraph 1.04.C above. Test records (or
> reproductions of the test records) shall be made a part of the
> reports. The report shall be signed by a certified representative of
> the supplier. Three copies of the reports shall be shipped to the
> buyer along with the equipment.
>
> F. Buyer Acceptance Test Report. The buyer shall prepare and submit to
> the supplier a report describing the results of the acceptance test
> specified in paragraph 1.04.D above. Test records (or reproductions of
> the test records) shall be made a part of the report.
>
> G. Certificate of Conformance. The supplier shall provide certified
> documentation which provides a clear and unequivocal statement that
> all contractual requirements have been met, and that objective
> evidence (i.e., verified quality control data, records, calibration
> sheets and inspection reports) is on file at the supplier\'s facility
> to substantiate this.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [EQUIPMENT]{.underline}**

> A. General. The following requirements describe the tritium monitoring
> capabilities for room air monitors.
>
> B. Chassis. The chassis shall be a standard 19-inch rack mount style
> per MIL-STD-189 and it shall be enclosed. The maximum panel height
> shall be 9 inches, and the maximum panel depth shall be 14 inches.
>
> C. Sensitivity. The instrument shall be able to detect tritium
> concentrations in room air of 1 to 20,000 fCi/m3 in a single range.
> The instrument shall be insensitive to externally produced ions.
>
> D. Instrument Accuracy. The instrument shall measure tritiated air
> with an accuracy of q 10 percent of the true reading on all outputs or
> q 1 fCi/m3, whichever is greater, under the environmental conditions
> of paragraph 3.01.D. This accuracy specification is inclusive of
> linearity, hysteresis, and repeatability errors. The noise on the
> output signal lines described in paragraph 2.01.I shall be less than
> 50 mV peak to peak after an instrument warmup of 30 minutes. The zero
> drift shall be less than q 1 fCi/m3 after a warmup of 30 minutes, and
> under the environmental conditions stated in paragraph 3.01.D. The
> long-term zero drift shall be less than q 1 fCi/m3 over a period of at
> least 30 days.
>
> E. Time Constant. The instrument electronics shall have two time
> constants. One time constant shall apply for the range above 80 q 2
> fCi/m3 and shall be 3 q 1 seconds. The other time constant shall apply
> for the range below 80 q 2 fCi/m3 and shall be 25 q 1 seconds.
>
> F. High Voltage Control. A chamber high voltage on/off locking toggle
> switch shall be provided and located on the rear panel with a green
> \"on\" light located on the front panel.
>
> G. Alarms. The instrument shall have two adjustable alarm regions. The
> low alarm shall be continuously adjustable from 0 to 1000 fCi/m3 with
> control on the front of the instrument using digital thumb-wheel
> switches indicating the alarm level. The alarm shall be nonlatching,
> and it shall have audio and visual signals. The audio signal shall be
> a steady sonalert, and the visual signal shall be a steady red light.
> The audio alarm shall be mutable and it shall reset automatically when
> the input conditions return to the non-alarm state.
>
> The high alarm shall be adjustable from 0 to 20,000 fCi/m3 with the
> adjustment control on the front of the instrument, using digital
> thumb-wheel switches indicating the alarm level. The high alarm shall
> be a latching type, and it shall provide audio and visual signals. The
> audio signal shall be a pulsing sonalert, and the visual indication
> shall be a flashing red light. The alarms shall be latching. The audio
> alarms shall be nonmutable, and it shall require manual reset at the
> instrument front panel. The output switch closures for the alarm
> conditions are specified in paragraph 2.01.J.
>
> H. Power Supply Monitor. An instrument DC power supply monitoring
> circuit shall be provided. The DC power supply voltages within the
> instrument shall be mixed together and brought to a common output
> point. The voltage measured at this output shall change only if one
> (or more) of the originating voltages undergoes a catastrophic
> failure. The instrument shall provide a signal from an energized relay
> contact that shall indicate a good state of health. Upon failure of
> one or more of the power supplies the relay shall change to the
> unenergized state. This output shall be provided at the digital
> multipin connector on the rear panel.
>
> I. Analog Output Display/Signals. There shall be four analog outputs
> provided. They shall be:
>
> 1\. to a BNC connector
>
> 2\. to the Data Acquisition and Control System (DACS) located in the
> ES&H lab via an analog multipin connector
>
> 3\. to a remote panel meter, also located in the ES&H lab via the same
> analog multipin connector
>
> 4\. to the front panel meter
>
> To accommodate item 1 above, the analog output shall be connected to a
> BNC bulkhead connector mounted on the rear panel for use with a chart
> recorder or with another hard copy device. To accommodate items 2 and
> 3 above, the analog output shall be provided using two lines (four
> lines when commons are included) to the analog multipin connector
> (described in paragraph 2.01.V of this document) mounted on the rear
> panel of the instrument. One of these electrical outputs shall be
> connected to the DACS; the other electrical output shall be used to
> drive a meter on a SNL remote panel. To accommodate item 4, the
> tritium concentration shall be displayed on a digital front panel
> meter. The panel meter shall be a 4-1/2 digital, 2 percent accuracy,
> linear LED panel meter approximately 4 inches by 3-1/2 inches mounted
> on the front panel of the instrument.
>
> The signal commons for items 2 and 3 shall be wired separately to the
> analog multipin connector. All of the above signals shall be
> electrically isolated from each other and shall withstand a short
> circuit applied indefinitely so that failure of one will not affect
> the accuracy of the others. The output impedance on all of the above
> signals shall be less than 1000 ohms. All of the above specifications
> shall be valid for the environmental conditions stated in paragraph
> 3.01.D of this document.
>
> J. Digital Output Signals. Isolated switch closures shall be provided
> for each of the following signals in the quantities indicated:
>
> [Signal Type No. of outputs]{.underline}
>
> the low flow indication 1
>
> the low alarm state 1
>
> the high alarm state 4
>
> the DC power supply monitor 1
>
> The low flow indication shall go to the remote DACS through the
> digital multipin connector at the rear panel.
>
> The digital low alarm shall provide activation for one signal to the
> remote DACS.
>
> The digital high alarm signal shall provide activation for four
> external alarms at SNL: a hard wired panel light; the fire alarm
> system; room entrance warning lights that will be driven by peripheral
> SNL-furnished power relays; and the fourth output shall go to the
> remote DACS.
>
> The DC power supply monitor shall go to the remote DACS through the
> digital multipin connector at the rear panel.
>
> Each of the above seven alarm signals shall be isolated from each
> other and from ground by a minimum of 1000 megohms at 50VDC, and they
> shall appear at the digital connector as normally open relay contacts.
> The minimum contact rating shall be 24V at 35 milliamps. The relays
> shall be mounted in sockets for easy replacement. Both relay contacts
> of each signal shall be present at the digital connector. These
> specifications shall be valid for the environmental conditions stated
> in paragraph 3.01.D of this document.
>
> K. Air Intake/Exhaust. The air shall be pumped through the ion
> chamber. The required air pump shall be supplied by Sandia National
> Laboratory. The air inlet and exhaust shall be located on the rear
> panel of the instrument. The instrument shall be able to handle an air
> flow rate of 15 q 5 liters per minute. A pleated air dust filter of
> the standard respirator type, capable of removing particles and ions
> to a high degree of efficiency, shall be provided for the air inlet.
> The large particles shall be removed mechanically, and the small
> particles and ions shall be removed electrokinetically. The connectors
> on the air inlet and exhaust shall be nonthreaded 1/4-inch hose
> nipple-type fittings.
>
> L. Flow Switch. A pressure (flow) switch shall be located near the air
> intake inside the chassis, and set to register a low flow at 10 liters
> per minute q 1 liter per minute. The low flow condition shall be
> indicated by a red light on the front panel of the instrument. Its
> shape and position shall be such that it can be readily
> distinguishable from the radiation visual alarm indicators.
>
> M. Alpha Suppression. Alpha pulse rejection (APR) capability shall be
> provided with override control. A locking toggle switch on the rear
> panel shall provide the in/out control of the APR. An amber light on
> the front panel shall indicate the APR is \"IN\" when lit, and the APR
> is \"OUT\" when unlit.
>
> N. Electrical Zero Capability. To facilitate electrically zeroing the
> instrument, a locking toggle switch shall be provided on the front
> panel to place the ion chamber in and out of the circuitry. The switch
> shall be labeled \"ION CHAMBER\" with positions \"IN\" and \"OUT\"
> identified to indicate the condition of the ion chamber relative to
> the circuitry. When the chamber switch is in the \"OUT\" position the
> instrument\'s outputs shall be adjustable to zero.
>
> A locking potentiometer to adjust the electrical zero level of the
> instrument shall be located on the front panel.
>
> O. Power. The Instrument shall be powered by single phase, 110 q 5VAC
> at 60 q 3 Hz. The 110 V electrical receptacles shall be a three-pole,
> three-wire type mounted on the rear panel. The 110 VAC line shall be
> protected by a fuse installed and replaceable from the rear panel. A
> removable, mating electrical power cord, a minimum of 6 feet in
> length, shall be supplied with each instrument.
>
> The instrument shall have a battery backup power supply that shall
> protect and sustain the instrument during an AC power failure. The
> battery shall be able to sustain the instrument electronics and
> ionization chamber for a minimum of four hours. The instrument shall
> maintain the batteries at a fully charged condition when normal AC
> power is available. Gel cell batteries are preferred and, if possible,
> the battery unit shall be mounted inside the instrument chassis. If it
> is not possible to mount the battery unit inside the instrument
> chassis, the unit will be as compact as possible and the physical
> configuration shall be almost, if not exactly, cubic.
>
> The power on/off switch shall be a locking toggle switch with a green
> light lit indicating that the power is on. The switch and light shall
> be mounted on the front panel.
>
> The instrument shall also supply on the rear panel a separately fused
> duplex receptacle (female) outlet for supplying power to pumps or
> other equipment. This outlet shall not be powered by the battery
> backup specified above.
>
> P. Power Up Indications. When there is a power interruption, or when
> the instrument is powered up, the alarm indications shall not be
> activated.
>
> Q. Front Panel Aesthetics. The front panel shall be light in color and
> the labeling of all controls and indicators shall be black. All
> labeling shall be permanent and imprinted using a photo etching
> technique.
>
> R. Summary of Front Panel. The front panel shall include the following
> components: panel meter, on/off power switch and light, chamber in/out
> switch, Alpha Pulse Rejection (APR) \"IN\" light, low alarm adjustment
> thumb-wheel switches, steady red light and sonalert with muting
> switch, high alarm adjustment thumb-wheel switches, flashing red light
> and pulsing sonalert, zero adjustment potentiometer, low flow alarm
> light, and the high voltage \"ON\" light. The two red alarm lights
> shall be larger in size than all of the other lights on the front
> panel. All visual alarms shall be visible throughout a 120-degree cone
> as viewed from the front of the instrument.
>
> S. Rear Panel Aesthetics. The color of the rear panel shall be
> arbitrary with the stipulation that the labeling of all connectors,
> switches, and indicators be printed in a contrasting color. The
> printing of the labels shall use a photo etching technique.
>
> T. Rear Panel Components. The rear panel shall include the following
> components: air inlet and exhaust connections, dust filter, alpha
> pulse rejection (APR) switch, chamber high voltage on/off toggle
> switch, the analog multipin connector, the digital multipin connector,
> the fused female duplex receptacle outlet, and the analog BNC
> connector.
>
> U. Electrical Connectors. The analog and digital multipin connectors
> shall be of the same type. The connectors shall be per MIL-C-26482 to
> mate with a MS-3126 plug with 10 percent or 4 spare pins, whichever is
> greater, and shall be mounted on the rear panel. There shall be one
> connector for the analog outputs and one connector for the digital
> outputs. The supplier shall furnish the mating connectors for the
> analog and digital connectors installed on the rear panel of the
> instrument. If the connectors are the same size, they shall be keyed
> differently to insure that the analog cable may not be plugged into
> the digital connector and vice versa.
>
> V. Instrument Shipment. The instrument shall be packaged and shipped
> by the supplier. The packaging shall be sufficient to allow indoor
> storage of the instrument for at least a 90-day period.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [CONSTRUCTION]{.underline}**

> A. Ion Chamber Decontamination. For the purpose of decontamination of
> the ion chamber, the chamber shall be readily accessible, and its
> removal for cleaning shall be straightforward. The ion chamber shall
> be located inside the instrument chassis.
>
> B. Workmanship. The unit shall be designed, fabricated, and tested in
> accordance with the best commercial practices. In addition, all
> electrical work shall conform to the workmanship standards included in
> the Electrical Specifications Sections 16001 and 16120, or (subject to
> SNL approval) the supplier\'s own processing procedure.
>
> C. Qualifying Experience. A minimum of five years experience in the
> manufacturing of tritium monitoring equipment is required.
>
> D. Environmental Conditions. The instrument shall be capable of
> withstanding any combination of the following environmental conditions
> in which it must operate, without mechanical or electrical damage or
> operating degradation.
>
> 1\. Ambient temperature
>
> Operating: +10 to +35 degrees C.
>
> Nonoperating and storage: -20 to +70 degrees C.
>
> 2\. Relative Humidity
>
> Operating: 0 to 95%
>
> Nonoperating and storage: 0 to 95%
>
> 3\. Barometric Pressure
>
> Operating: From sea level to 8,000 feet above sea level
>
> Nonoperating and storage: From sea level to approximately 40,000 feet
> above sea level.
>
> E. Identification. Each assembly or subassembly as required shall be
> identified with the following information:
>
> Company name of supplier
>
> Assembly nomenclature
>
> Assembly part number
>
> Assembly serial number
>
> SNL specification number and revision number
>
> (The last two characters of the specification is the revision number).
>
> F. Human Factors. The general design and layout of the front panel
> shall conform to good human engineering practices per MIL-STD-1472B.

**3.02 [BUYER ACCEPTANCE TEST PROCEDURE]{.underline}**

> A. Scope. This Article describes the acceptance test procedures to be
> completed by Sandia National Laboratory on receipt of the tritium room
> monitors built to this specification. All referenced paragraphs in
> this document pertain to those in this specification. All of the tests
> performed on the instrument shall be under ambient temperature,
> pressure, and relative humidity. The instrument test results must
> comply with the above specification in order to have an acceptable
> unit.
>
> B. Visual Acceptance Tests.
>
> 1\. Air Intake/Exhaust (reference paragraph 2.01.L). The instrument
> shall be verified to contain the air intake/exhaust connections and
> the existence of the air filter.
>
> 2\. Power (reference paragraph 2.01.P). The power cord shall be
> verified to exist and attach properly to the instrument.
>
> 3\. Panels (reference paragraph 2.02.R - 2.01.U). The front and rear
> panels shall be examined to verify the proper controls and labeling as
> stated in paragraphs 2.01.R through 2.01.U of this specification. The
> labeling nomenclature is found throughout the specification and the
> instrument shall be verified to adhere to that nomenclature.
>
> 4\. Electrical Connectors (reference paragraph 2.01.V). The output
> connectors on the rear panel shall be examined and verification of the
> difference between the analog and digital connector shall be
> performed. The mating connectors shall be shown to exist and to
> connect properly.
>
> 5\. Documentation (reference paragraph 1.03.A). The documentation
> shall be checked to verify inclusion of the operating/maintenance
> manual, all schematics and drawings, and the comprehensive parts list.
> The operating/maintenance manual shall be checked to verify inclusion
> of all required sections.
>
> 6\. Identification (reference paragraph 3.01.E). The instrument shall
> be examined to verify inclusion of the required identification.
>
> 7\. Workmanship (reference paragraph 3.01.B). The instrument shall be
> opened and the PC boards and other electrical work shall be examined
> to adhere to workmanship standards as specified in the electrical
> specifications section 16001.
>
> C. Electrical Acceptance Tests.
>
> 1\. Instrument Set Up. The instrument shall be prepared for testing
> according to the manufacturers operating manual. The required warm up
> time and other requirements by the manufacturer shall be observed.
>
> 2\. Digital Tests.
>
> a\. High Voltage Control (reference paragraph 2.01.G). A steady state
> output signal shall be achieved with a gamma source and the high
> voltage switch on. The high voltage shall be switched off and the
> output signal shall be observed. The signal change to approximately
> zero volts and reflect only electrical noise.
>
> b\. Alarms (reference paragraph 2.01.H). The instrument shall be
> exposed to a gamma source and current injection shall be used to
> verify alarm set level capability. Alternatively, the zero adjustment
> might be used to test the alarms if there is sufficient range in the
> zero adjust. For the low alarm, the verification points shall be 5,
> 25, 300, 500, and 750 fCi/m3. The low alarm audio and visual outputs
> shall be verified to reset when the level has returned to a nonalarm
> state. On the high alarm the verification points shall be 1100, 2000,
> 5000, 10,000 15,000, and 19,000 fCi/m3. The ability to mute the high
> alarm sonalert from the front panel shall be verified. The high alarm
> signal shall be verified to latch.
>
> c\. Low Flow (reference paragraph 2.01.K). The low flow indication
> shall be checked. A rotameter shall be attached to measure a
> restricted air flow of 10 q 1 liter per minute. The low flow indicator
> light shall be observed to illuminate and the low flow digital signal
> from the digital connector shall be monitored to verify a low flow
> condition.
>
> d\. Power Up (reference paragraph 2.01.Q). The power to the instrument
> shall be cycled off and then on to verify the alarm indications shall
> not be activated. The output signals for alarms shall be checked to
> verify no alarm indications are transmitted.
>
> e\. Power Supply Monitor (reference paragraph 2.01.I). The correct
> output signal shall be verified by disconnecting each power supply in
> turn. This test shall be performed only on the first unit received.
>
> 3\. Analog Tests.
>
> a\. Sensitivity/Accuracy (reference paragraph 2.01.C). The instrument
> shall be exposed to a gamma source and current injection shall be used
> to simulate a tritium concentration over the range of 1 to 20,000
> fCi/m3. The instrument range shall be verified by examining at least
> five data points per decade. The data points for verification shall
> be:
>
> [Decade \# Data Points (fCi/m3)]{.underline}
>
> 1 1.5: 3.0: 5.5: 7.5: 9.0
>
> 2 15: 30: 55: 75: 90
>
> 3 160: 350: 600: 800: 950
>
> 4 1050: 3000: 5000: 7500: 9000
>
> 5 10500: 13000: 15750: 17250: 19500
>
> These data values shall be verified four times. The data values shall
> increase from the lowest value to the highest value, then descend
> through the same data values to the lowest point, and then increase
> and decrease again. This repetition shall be required to examine the
> linearity, hystersis and repeatability of the instrument. The
> instrument shall also be subject to tritium for test of the
> instrument. Procedures for this shall be supplied by the Sandia
> National Laboratory HSE Division.
>
> b\. Time Constant (reference paragraph 2.01.F). The instrument shall
> have a chart recorder attached and be exposed to a gamma source and
> current injection shall be used until a zero steady state condition is
> achieved. The source shall be increased to obtain a reading of 500
> fCi/m3 as a step function and the low range time constant shall be
> calculated from the chart recorder output. The source shall be
> re-zeroed and then increased to obtain a reading of 6000 fCi/m3 as a
> step function and the high range time constant shall be calculated.
>
> c\. Alpha Suppression (reference paragraph 2.01.N). The instrument
> shall be subjected to a constant gamma source and the alpha
> suppression switch shall be switched from on to off. The instrument
> output shall be monitored with a chart recorder. The gamma source
> distance shall be varied to indicate proper operation of the APR.
>
> d\. Electrical Zero (reference paragraph 2.01.M). The range of the
> zero adjustment shall be determined and recorded. The zero adjust knob
> shall be turned full clockwise and full counterclockwise and the meter
> readings at each extreme recorded.
>
> e\. Power (reference paragraph 2.01.O). The separate electrical outlet
> shall be tested using an external pump, model number A1017-0502
> manufactured by Medo U.S.A., Inc.. This test shall be performed only
> on the first unit received.
>
> f\. Analog Signals (reference paragraph 2.01.J). Each outlet shall be
> shorted to ground for a 20.5-second period and the other outputs shall
> be verified to remain unchanged. This test shall be performed only on
> the first unit received.
>
> 4\. Ion Chamber (reference paragraph 3.01.A). The ion chamber shall be
> removed and reinstalled to verify the capability to do so. This test
> shall be performed only on the first unit received.
>
> END OF SECTION