ML19305B437
| ML19305B437 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/17/1980 |
| From: | VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML19305B435 | List: |
| References | |
| PROC-800317, NUDOCS 8003190650 | |
| Download: ML19305B437 (65) | |
Text
{{#Wiki_filter:, AHa.chmmt A DRAFT pd note, outY THoSE PAGE S O F E PIP-1 UJHICM EPIP-1 EEX d HAVE DEEM RECENTLY REVISED ARE I u CLuDE D (4 PAGES) ORGANIZATION DURU!G EMERGEHCY CONDITIONS _ A. RESPONSIBILITY AND AUTHORITY Initially the Shift Supervisor will be designated Emergency Director. As additional personnel arrive onsite, the Shift Supervisor shall be relieved of his duties as Emargency Director by, in order of succession, the:
- 1. Station Manager
- 2. Superintendent Operations
- 3. Superintendent Technical Services 4.. Supervisor Health Physics
- 5. Operating Supervisor Once one of the above individuals has relieved the Shift Supervisor as Emergency Director, he shali relocate to the Onsite Technical Support Center (OTSC) and act as OTSC Supervisor until relieved.
The Emergency Director shall have overall authority and , responsibility for directing the emergency response acti-vities. The following individuals or their alternates shall report directly to the Emergency Director: Superintendent Operations Superintendent Technical Services Superintendent Maintenance Supervisor Health Physics Onsite Operations Support Center Supervisor Supervisor Administrative Services Resident QC Engineer
'These superintendents and supervisors shall, in turn, direct I the activities of the departments which normally report to i them (see Figure 1). The emergency response organization is l basically the same as the nontal station organization, with
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.' DRAFT the superintendents and supervisors being responsible for supervising and directing the' emergency response activities as directed by the Emergency Director.
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l B COMMUNICATIONS The lines of communication during the emergency response effort will be from the Emergency Director, through the superintendents and supervisors which report to him, to the supervisors in charge of the emergency response personnel located at the various assembly areas in the station. Communications to the Emergency Director will take the reverse path. All communications to and from the offsite response groups will be made by the Emergency Director, or his designee. Requests for assistance from offsite response groups, such as Vepco or vendor emergency response groups, will be made by the Emergency Director and these personnel will be directed to report to the
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appropriate station superintendent or supervisor at the appro-priate assembly location; i.e., offsite engineering support personnel would report to the Engineering Supervisor at the OTSC, offsite operations support personnel would report to the ! 00SC Supervisor at the 00SC, offsite electrical support per- ; sonnel would report to the Electrical Supervisor in the Electric shop, etc. All off site emergency response personnel will come under the direction of station supervision once they report ; to the station. ' l l
i DRAFT l EPIP-1 APX 6 Page 5 of REPORTING TO THE STATION Upon arriving onsite, personr.el shall report to the locations listed below: l ONSITE TECHNICAL SUPPORT CENTER (OTSC) Station Manager Superintendent Operations-Superintendent Technical Services Superintendent Maintenance Operating Supervisor Supervisor Health Physics Supervisor. Administrative Services Resident QC Engineer Supervisor Chemistry Instrument Supervisor Engineering Personnel Operations Coordinators Fire Marshal Shift Technical Advisors not on shift ONSITE OPERATIONS SUPPORT CENTER (00SC) Operators not required for plant operation Operators scheduled to relieve -the on duty shift Fire Brigade members First Aid Team members NOTE: The first Shift Supervisor or Assistant Shift Supervisor reporting to the 00SC shall assume the duties of the 00SC Supervisor and sh'all act in this capacity until relieved by an individual appointed by the Emergency Director.
DRAFT HEALTH PHYSICS AREA Health Physics monitoring teams fl0TE: The first Health Physicist or Assistant Health Physics Supervisor reporting to the Health Physics Area shall assume supervisory responsibility for the monitoring teams until relieved by an individual appointed by the Emergency Director. . Other station personnel shall report to their normal assembly area and await further instructions. The first supervisor to report to each of these areas shall ' assume supervisory responsibility until relieved by a more senior supervisor as directed by the emergency Director. If the OTSC becomes uninhabitable, those individuals needed to perform the assessment function shall relocate to the Control Room. Other OTSC personnel should proceed to another appropriate area, such as the Onsite Operations Support Center or the Offsite Emergency Operations Center, and await further instructions. The number of personnel relocating to the Control Room should be held to the minimum required to adequately assess the emergency and they should assemble at the far West end of the Control Room. ,
, i A+Ach ment B QC SURVEILLAf!CE OF 5HIFT RELIEF & C0t? DUCT The Quality Control Deparbnent's coverage of shift relief and conduct is documented as a part of our surveillance and inspection of safety-related activities program. A pre-printed inspection report is utilized and is scheduled on a monthly basis. This is controlled by local guidelines which are approved by the Resident QC Engineer on inspection reports and surveillance of safety-related activities. e f 4
, i Attachment C Summary of Revisions to Administrative Procedure 1.0
" Station Organization and Responsibilities" Administrative Procedure 1.0 has been revised to include the requirement that a Shif t Supervisor or Assistant Shif t Supervisor licensed on Unit 2 be in the control room at all times. The following paragraph describing the duties of the Control Room Operator has been added to the procedure.
1.8 Control Room Operator (licensed) The Control Room Operator is rasponsible for the safe operation of the unit which he is assigned to. He must insure it is operated within the Technical Specificatior s and in accordance with currently approved procedures for normal, abnormal and emergency procedures. He is responsible for initiating deviations to the above procedures where necessary in accordance with the Nuclear Power Station Quality Assurance Manual. The Control Room Operator shall maintain a log noting both routine and abnormal conditions which occur during his shif t which could effect operation of his unit, or the safety of the station. The Control Room Operator is responsible for notifying the Shift Supervisor immediately of any condition on his unit which could y affect the operation of the station or his unit. The Control Room Operator has a designated area in the vicinity of the control board which he must remain in to provide continuous surveillance of the control board during operation. The Control Room Operator is a Licensed Reactor Operator, and can only be relieved by another Licensed Reactor Operator or Senior Reactor Operator. l l l l
Aito.chmen.Y D Pressurizer Safety Valve and PORV Position Indication Sensitivity The acoustical monitoring system installed provides direct indication of flow through the subject valves and not direct indication of the valve position. The system is capable of detecting a high frequency noise level that would occur if a valve was open slightly with a low volume of' flow. Once a valve begins to open, past its initial opening off the seat, the system is not capable of providing an accurate position of the valve; however, the indication is such that the operator will know the valve is open.
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A Noch7nini E u-ICP-I-VMS-01 Page I of 24 , 03-05-80 VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION INSTRUMENT CALIBRATION PROCEDURE VALVE MONITORING SYSTEM INDEX: REFERENCES I.0 Purpose 2.0 Initial Conditions 3.0 Precautions and Limitations 4.0 Calibration Instructions REV. PAGE DATE APPROVAL I RECOMMENDED APPROVAL: INSTRUMENTATION SUPERVISOR RECOMMENDED APPROVAL: SUPERVISOR ENGINEERING SERVICES APPROVED BY CHAIRMAN STATION NUCLEAR SAFETY AND OPERATING COMMITTEE DATE: 03-05-80 l
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ICP-1-VMS-01 Page 2 of 24 03-05-80
REFERENCES:
- 1. Vepco: " Indication of Pressurizer Safety Valve Flow - Design Change 79-S54."
- 2. B & W: " Installation and Checkout Procedure C-010-00 for Valve Monitoring System."
- 3. B & W: " Reference Documentation for Babcock & Wilcox Valve Monitoring System" BAW-1587 Supplement, Dec. 1979.
- 4. B & W: " Valve Monitoring System - Technical Manual" BAW-1587 Dec. 1979.
- 5. S & W Loop Sheets: VMS-001-VMS-005.
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1.0 Purpose 1.1 The purpose of this procedure is to provide a method for the test and/or calibration of the Valve Monitoring System and to ensure that this instrumentation functions within desired I tolerences and accuracies. l I
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P 8 ICP-1-VMS-01 Page 3 of 24 03-05-80 2.0 Initial Conditions 2.1 Initial Plar Conditions 2.1 The Shift Supervisor has granted administrative authority for maintenance, testing or calibration to be performed and is aware of all affected indications, alarms, printouts and functions. ALARMS: ANNUNCIATOR ALARM - IC D-1 PRESSURIZER SAFETY VALVE OR PORV OPEN INDICATIONS: INDICATION DESCRIPTION YI-VMS100A SV-1551A YI-VMS100B SV-1551B YI-VMS100C SV-1551C YI-VMS101A PCV-1455C YI-VMS101B PCV-1456 PRINTOUTS: SYMBOL DESCRIPTION Y4126D PRESUZER SAFETY VALVE 1551A Y4127D PREEUZER SAFETY VALVE 1551B Y4130D PRESUZER SAFETY VALVE 1551C Y4121D PRESSURIZER VALVE PCV 1455C Y4122D PRESSURIZER VALVE PCV 1456 FUNCTIONS: Indication and alarm only. G
e #e O ICP-1-VMS-01 Page 4 of 24 03-05-80 2.2 Procedural Initial Conditions 2.2.1 Communications have been established between the accelero-meters and Control Room as necessary. 2.2.2 All data shall be recorded at the time of calibration or testing on the data sheets provided with this procedure. 2.2.3 This procedure contains provisions for a calibration check and for calibration of the subject loop. If all required readings and measurements are within specified accuracies, no adjustments will be necessary. If any component (s) fails to meet specified accuracies, then only that component need be adjusted. 2.2.4 If only a part of this procedure is performed, then only the applicable data sheets need be filled out and submitted. Mark any data table or " INITIAL" step which is not performed as N/A. If a partial calibration is performed, an explanation must be given in the Remarks Section. 2.2.5 Ensure instrumentation has been energized at least 15 minutes to allow for equipment warm-up. 2.2.6 The following Test Equipment or its equivalent (with adequate precision and range to measure the desired parameter) is available and has been calibrated (if required) against standards traceable to the National Bureau of Standards as indicated by a current calibration sticker: Fluke 8040A DVM H P 3310A Function Generator GR 1557-A Vibration Calibrator Telequipment D-32 Oscilloscope
ICP-1-VMS-01 Page 5 of 24 03-05-80 3.0 Precautions and Limitations 3.1 Observe all applicable safety and tagging procedures listed in Vepco Nuclear Power Station Quality Assurance Manual, Section 14, and the VEPCO Accident Prevention Manual. 3.2 Do NOT overrange equipment. 3.3 Use only the proper hand tools to avoid shortening the service life of the equipment. 3.4 Observe all applicable Health Physics procedures. 3.5 Any leads lifted or jumpers installed for long periods (longer than the normal calibration or overnight) will be logged in the jumper log located in the Main Control Room.
> 3.6 If it becomes necessary to remove a system component ;
because of defective operation, place a tag on the removed component and include the following information: Name of person removing component Brief description of apparent problem i Mark number, if applicable i Date of removal s location from which component was removed Maintenance Report No., if applicable On the applicable Equipment History Log listed by serial number, record the mark number, date removed, l and reason for removal. If another component is not 1 immediately inserted as a replacement, a tag must be placed at the empty slot, and must contain the same information as is listed above.
ICP-1-VMS-01 Page 6 of 24 03-05-80 3.0 Precautions and Limitations (cont.) 3.7 If a system component is repaired or replaced, whether in conjunction with a planned maintenance action or as a corrective maintenance action, in addition to the performance of any required component calibration, a calibration check of all components receiving an input directly from the affecte'd component must also be performed, either by use of the calibration check provisions of this procedure, or by performance of the applic.,ble Periodic Test. 3.8 The amplification range of each individual active channel may require adjustment if the background noise level varies consider-ably in amplitude during a major plant evolution. This adjust-ment may be needed especially when a considerable portion of the resulting background noise falls in tha spectra region of flow noise. 3.9 If the visual display module is removed for calibration or maintenance, note that the upper left and lower right screws (nickel plated) have right handed threads (tightened CW) and that the upper right and lower left screws (black oxide plated) l have left handed threads (tightened CCW). I l l
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ICP-1-VMS-01 Page 7 of 24 03-05-80 4.0 Calibration / Calibration Check 4.1 Power Supply 4.1.1 Remove the cables from the rear of the VMS Signal Conditioner to be calibrated. Record each cable designation on the data sheet for proper reconnection. 4.1.2 Remove the module to a convenient location for calibration. 4.1.3 Remove the top and bottom covers from the module. 4.1.4 Apply AC power to the rear connector. Note that the vertical pin is AC ground. l 4.1.5 Measure and record the following Power Supply (card "P") voltages in the "As Found" column of the data sheet: NOTE: Card locations are shown in Figure 1. PINS VOLTAGE' 10 (+) to 6 (-) + 15 VDC 9 (+) to 6 (-) - 15 VDC J (+) to 6 (-) + 5 VDC 4.1.6 Measure and record the voltage between pin 5 (+) and 6 () on the Power Supply Coupler (card "A") in the "As Found" column of l the data sheet. 4.1.7 If any of the values of Steps 4.1.5 or 4.1.6 are not within data sheet tolerence, investigate and repair as required. Thera are no adjustments for these supplies. 4.1.8 Record final "As Left" values on the data sheet. 4.1.9 Proceed with the Calibration / Calibration Check or " Return to Normal" in accordance with Section 4.10.
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03-05-80 l 4.0 Calibration / Calibration Check 4.2 DC BALANCE ADJUSTMENTS 4.2.1 If not already done, perform Steps 4.1.1 through 4.1.4. 4.2.2 Connect an oscilloscope between pins 4 and 6 (ground) l on Dial-A-Gain Amplifier card "B". 1 4.2.3 Record the "As Found" DC offset on the data sheet. 4.2.4 If required, adjust the "BAL" potentiometer on card "B" for a DC offset of approximately + 100 mV. Record the final "As Left" value on the data sheet. 4.2.5 Connect a DVM between pia 7 and pin 9 (ground) on the
" ACCESSORY" plug at the rear of the Signal Conditioner module and record the "As Found" DC output.
4.2.6 Adjust the "BAL" potentiometer on Output Amplifier card "C" for minimum output at pin 7. Record the "As Left" value on the data sheet. 4.2.7 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
4.3 Range Switch Calibration 4.3.1 If not already done, perform Section 4.1. 4.3.2 Record the "As Found" setting of the "SENS (pC/g)" dial, the "HI-ALARM LEVEL" switch and the " FULL SCALE RANGE" switch on the data sheet. Then, unlock the sensitivity dial. 4.3.3 Set the Signal Conditioner module front panel controls as follows: HI-ALARM DEFEAT LO-ALARM DEFEAT SENS 10.00 FULL SCALE RANGE I LP (filter) OUT HP (filter) OUT
}{I-ALARM LEVEL 6
m --. x . . , :=_ _ . - - - . -- -- ICP-1-VMS-01 Page 9 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.3.4 Connect a funtion generator to the " CAL" phone jack at ' the rear of the module. Monitor the function generator output with an RMS voltmeter. NOTE: Insertion of the phone plug automatically disconnects the remote preamplifier and the associated constant current drive. 4.3.5 Connect a DVM and oscilloscope to the "OUT" connector on the rear of the module. 4.3.6 Set the function generator output for a 1 KHz, 10 mVRMS sine wave. 4.3.7 Record the "As Found" front panel "% FULL SCALE" meter reading on the data sheet. Observe the oscilloscope for an undistorted wave form. 4.3.8 Repeat Step 4.3.7 for the remaining input values and 4 front panel settings specified on the data sheet. 4.3.9 If the "As Found" data of Step 4.3.7 is within data sheet tolerence, record final "As Left" values 4.3.10 If the "As Found" data of Step 4.3.7 is not within data sheet tolerence, a sensitivity dial calibration may be required. However, since this adjustment is normally set at the factory and the sensitivity dial is kept locked in place, all other possibilities should be explored (including, Steps 4.6.8 through 4.6.10) i before performing the following steps: , 4.3.10.1 Connect the output of a ratio transformer 1 i (Singer RT20R or equivalent) to the Signal , I l l Conditioner " CAL" Jack. l
_ ...._ _.___ _ ._ ~ ._ .._ ICP-1-VMS-01 Page 10 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) ; I 4.3.10.2 Connect a function generator and RMS Volt- ] meter to the ratio transformer input. Connect an AC voltmeter and oscilloscope to the "OUT" connector on the rear panel of the Signal Conditioner. NOTE: This arrangement eliminates error by using the AC voltmeter as a voltage comparator. 4.3.10.3 Place the LP and HP filters in the "OUT" position and set the FUII SCALE RANGE switch at 10g. 4.3.10.4 Adjust the function generator for a 1 KHz, 60.0 mVRM3 sine wave output. Set the sen-sitivity dial to 6.00 pC/g and verify a 1.00 VRMS (t.01) output at the "OUT" connector. 4 3.10.5 Whether the value found in 4.3.10.4 wcs within tolerence or not, proceed to Step 4.3.10.6. 4.3.10.6 Adjust the audio oscillator for a 1KHz, 140.0 mVRMS output. Set the sensitivity dial to 14.00 pC/g and verify a 1.00 VRMS (t.01) output at the "OUT" connector. l 4.3.10.7 If the reading of Step 4.3.10.4 or 4.3.10.6 was not within tolerence, adjust the "ACC" l l potentiometer on the Dial-A-Gain Amplifier l (top, right trimpot on card "B") to obtain exactly 1.00 VRMS for the input conditions of Step 4.3.10.6. l
ICP-1-VMS-01 Pagn 11 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.3.10.8 Repeat Step 4.3.10.4. If the output value is still not within tolerence, turn the sen-sitivity dial CCW until the stop is reached and loosen the dial setting by 1% for each 1% that the output voltage was too high (low). 4.3.10.9 Lock the setting, replace the dial and tighten the set screw taking care not to move the potentiometet .aaft off its CCW stop. 4.3.10.10 Repeat Steps 4.3.3 through 4.3.8 as required. Record Final "As Left" values on the data sheet. 4.3.11 Proceed with the Calibration / Calibration Check or
- " Return to Normal" in accordance with Section 4.10.
4.4 Filter Calibration NOTE 1: Each valve's desired bandpass and resultant HP and LP filter break frequencies were determined during the performance of B&W's " Installation and Checkout Procedure C-010-00 for Valve Monitoring System." NOTE 2: This section may be performed with the VMS Signal Conditioner installed. 4.4.1 Set the Signal Conditioner front panel controls as follows: LP (filter) OUT HP (filter) OUT FULL SCALE RANGE 100 4.4.2 Connect a function generator to the " CAL" phone jack on the rear of the module. Monitor the function generator output with a frequency counter. 4.4.3 Connect an RMS voltmeter to the "OUT" connector on the rear of the module.
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ICP-1-VMS-01 Paga 12 cf 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.4.4 Adjust the function generator for a sir.e wave output of 1.000 VRMS (as monitored on the voltmeter of Step 4.4.3) at the center frequency of the bandpass specified on the data sheet. 4.4.5 Switch in the LP filter and slowly increase the function generator frequency until a reading of .707 VRMS is obtained on the voltmeter of Step 4.4.3. Record in the "As Found" column of the data sheet the frequency at which this value is obtained as read on the frequency counter. 4.4.6 If the value found in Step 4.4.5 was not within tolerence, proceed as follows: 4.4.6.1 Set the function generator for the low pass break frequency specified on the data sheet. 4.4.6.2 Adjust the "LPF" potentiometer on the rear of the module to obtain a voltmeter reading of
.707 VRMS.
4.4.6.3 Repeat Steps 4.4.4 and 4.4.5. 4.4.7 Record the final "As Left" low pass break frequency on l the data sheet. [ 4.4.8 Switch out the LP filter and repeat Steps 4.4.4 through 4.4.7 for the HP filter and high pass break frequency. 4.4.9 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
4.5 AC-DC Converter Calibration NOTE: The AGC function of this card is not utilized.
ICP-1-VMS-01 Page 13 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.5.1 If not done already, perform Section 4.1 and 4.2. 4.5.2 On AC-CD Converter-ACG card "D", short pin 8 to 6. 4.5.3 Connect a DVM between TPI and pin 6 (ground) on card "D". NOTE: TPI is located at the anode of the IN914 diode between IC's Z1 and 22 on the right side of the board. 4.5.4 Record the "As Found" voltage at TPI. Then, adjust the "BAL" potentiometer to obtain 0.000 i .020 VDC. 4.5.5 Connect the DVM of Step 4.5.3 between pins 7 and 6 (ground) and record the "As Found" voltage on the data sheet. 4.5.6 Adjust the "ZER0" potentiometer for a value of 25 1 mVDC on the DVM of Step 4.5.5. 4 4.5.7 Repeat Steps 4.5.3 through 4.5.6 as required and record final "As Left" values on the data sheet. 4.5.8 Remove the jumper placed in Step 4.5.2. 4.5.9 ^ Align the Signal Conditioner module as follows: HP (filter) OUT LP (filter) OUT SENS (pC/g) 10.00 FULL SCALE RANGE 10 4.5.10 Connect a function generator to the " CAL" Jack on the rear of the module. Monitor the function generator output with an RMS Voltmeter. 4.5.11 Connect a DVM between pin 7 (+) and 9 (-) of the
" ACCESSORY" plug.
4.5.12 Apply a 1 KHz,100 mVRMS sine wave to the CAL input and j record the "As Found" DVM reading of Step 4.5.11 on the data sheet.
ICP-1-VMS-01 Page 14 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.5.13 Adjust the " GAIN" potentiometer on card "D" to obtain 5.00 VDC on the DVM of Step 4.5.11. Record the final "As Left" value on the data sheet. 4.5.14 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
4.6 Alarm and Meter Calibration NOTE: The VMS Signal Conditioner low level alarm function is not utilized. This alarm was designed to alert the operator of possible equipment failure should the input signal drop below a predetermined level. However, since there is not significant difference between the normal and " loss of signal" background noise level, the Sw level alarm will remain in " DEFEAT" at present. 4.6.1 Align the Signal Conditioner module as follows: HP (filter) OUT LP (filter) OUT SENS (pC/g) 10.00 FULL SCALE RANGE 10 4.6.2 Connect a function generator to the " CAL" input on the rear of the module. Monitor the function generator output with an RMS voltmeter. 4.6.3 Verify that the "HI-ALARM" selector is in the poistion specified on the data sheet. 4.6.4 Adjust the function generator for a 1 KHz sine wave.
- Then, slowly increase the function generator output i until the HI-ALARM indicator on the Signal Conditioner module acutates.
4.6.5 Record the "As Found" high alarm setpoint as read on the DVM of Step 4.6.2 and the front panel "% FULL ; SCALE" meter reading on the data sheet. Note that the front panel meter indicates the alarm setpoint in i
"g's". 1
y . _ _%._ . . . _ . . . _ . . _ . _ _ . _ . . . _ _ _ ... _ _ ICP-1-VMS-01 Page 15 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.6.6 Verify that annunciator IC D-1, " PRESSURIZER SAFETY VALVE OR PORV OPEN," is in alarm and that the HI-ALARM indicator on the Master Alarm module has actuated. NOTE: The high alarm audio function ("Sonalert") on.the Master Alarm module is not utilized. 4.6.7 Reduce the function generator output below the high alarm setpoint. Press the " RESET" button on the Master Alarm module and verify that both HI-ALARM indicators and Annunciator IC D-1 reset. 4.6.8 Connect a DVM to pin 8 (J) of Comparator-Latch card"E". 4.6.9 If not done already, perform Section 4.1. 4.6.10 Place the "HI-ALARM" selector in position 6. Press the
" READ HI-ALARM" button and record the "As Found" voltage and "% FULL SCALE" meter reading on the data sheet.
4.6.11 If required, adjust the " METER CAL" potentiometer (upper-right trimpot) for a meter indication of 100%. Record the "As Left" value on the data sheet. 4.6.12 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
4.7 Remote Charge Preamplifier and Aecelerometer Calibration 4.7.1 If not already done, perform Sections 4.1 through 4.5. 4.7.2 Align the Signal Conditioner Module as follows: HP (filter) OUT LP (filter) OUT FULL SCALE RANGE 1g 4.7.3 If the SENS (pC/g) dial has been adjusted, return it to the position recorded in Step 4.3.2.
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ICP-1-VMS-01 Page 16 of 24 l 03-05-80 4.0 calibration / Calibration Check (cont.) l 4.7.4 Depress the " READ PREAMP BIAS" button and record the )
"As Found" % FULL SCALE meter reading on the data sheet. )
l NOTE: The reading on the % FULL SCALE meter is proportional to the remote charge preamplifier bias voltage.with ' 100% being equivalent to approximately 30 VDC. 4.7.5 If the reading found in Step 4.7.3 was not within tolerence, adjust the " PREAMP BIAS ADJ" potentiometer ; as required. Record the final "As Left" value on the data sheet. NOTE: An unadjustable high bias (> 80 %) indicates a faulty (open) cable between the Signal Conditioner and pre-amplifier or a faulty (open) preamplifier. An unadjust-able low bias (< 20%) indicates a faulty (shorted or partially shorted) cable between the Signal Conditioner 4 and Preamplifier or a defective preamplifier. 4.7.6 For the channel to be tested, unscrew its associated accelerometer from its mounting fixture using a special 5/8" deep-well socket which is notched to accept the cable connector. , NOTE: To prevent damage to the hardline cable, it may be advantageous to remove the mounting fixture first or to disconnect the hardline cable from the accelerometer. 4.7.7 Screw the accelerometer to the shaker disc stud of the GR Type 1557-A Vibration Calibrator. l NOTE: The Vibration Calibrator may be placed in either a veritical or horizontal position on a level surface. 4.7.8 Turn the OFF-BAT Switch to BAT and note that the meter l l reading is greater than 100 (marked "B" on the meter). I 4.7.9 Turn the OFF-BAT switch to ON and allow a few seconds for the shaker to build up to full amplitude. i l
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ICP-1-VMS-01 i Page 17 of 24 i 03-05-80 4.0 Calibration / Calibration Check (cont.) l 4.7.10 Adjust the shaker LEVEL control so that the meter indicates a load of 137 grams (139 grams for the PASSIVE sensor). Allow the calibrator to stabilize after each load adjustment. 4.7.11 If a PASSIVE accelerometer is being tested, remove the ACTIVE preamplifier connector from the " PREAMP" jack at the rear of the Signal Conditioner module and connect the PASSIVE preamplifier connector in its place. 4.7.12 Connect an oscilloscope and RMS voltmeter to the "OUT" connector at the rear of the module. 4.7.13 Record the "As Found" DVM reading on the data sheet and verify that the output is an undistorted sine wave with no signal contamination. 4.7.14 If the value found in Step 4.7.13 was not within tolerence, adjust the SENS dial to obtain the " DESIRED" RMS output. Record the final "As Left" SENS dial setting on the data sheet. 4.7.15 Replace the accelerometer being tested and torque to approximately 18 in-lb. NOTE: B&W recommends that an acoustical coupling compound (such as Pynogel) be used between the mounting fixture (if removed) and the structure on which it is mounted, and also between the accelerometer and mounting block. If the mounting straps were removed, torque them to approximately 20 in-lb. If the potting compound was removed from the hardline cable connector when it was disconnected, ensure that it is replaced. 4.7.16 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
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ICP-1-VMS-01 Page 18 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.8 Dual Audio Monitor 4.8.1 Place both GAIN controls on the Dual Audio Monitor fully CW. 4.8.2 Connect a function generator to the number 1 input at the rear of the monitor. Monitor the function generator output with a DVM. 4.8.3 Connect a 10 ohm, 2 watt resistor across the EXTERNAL monitor output. Use a phone plug for this connection to disable the speaker. 4.8.4 Connect a DVM and oscilloscope across the resistor installed in Step 4.8.3. 4.8.5 Adjust the function generator for a 1 KHz sine wave 1 output. Slowly increar,e the output level until 1.000 t
.005 VRMS is obtained on the DVM connected across the 10 ohm resistor.
- 4. 8. 6 - Record on the data sheet the function generator output to obtain 1.000 .005 VRMS and calculate the gain (output / input) of the amplifier. Record the "As Found" gain on the data sheet.
4.8.7 Adjust the function generator for a frequency of 300 Hz. Then, slowly increase the output level until clipping occurs as viewed on the oscilloscope. Record the "As Found" output level at which clipping occurs on the data sheet. 4.8.8 Adjust the function generator for a frequency of 10KHz and an output of 1.000 VRMS across the 10 ohm resistor.
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ICP-1-VMS-01 Page 19 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.8.9 Reduce the function generator frequency to 75 Hz and record the "As Found" output across the 10 ohm resistor. 4.8.10 Repeat Step 4.8.9 at 20 KHz. 4.8.11 Disconnect all test equipment and place the GAIN control fully CCW. 4.8.12 Adjust the front panel controls on the Signal Condi-tioner module being calibrated as follows: HI (filter) OUT LO (filter) OUT SENS (pC/g) Value of Step 4.3.2 or 4.7.14 FULL SCALE RANGE 10 4.8.13 Connect a function generator to the " CAL" input at the rear of the Signal Conditioner module. . 4.8.14 Adjust the function generator for a 100mV,1 KHz sine wave output. 4.8.15 Increase the audio monitor GAIN until the signal can be heard at a comfortable listening level. The speaker output should be a clear, undistorted 1 KHz tone. 4.8.16 If any of the results or "As Found" , slues of this section are not within tolerence, investigate and repair as required. There are no adjustments for the Dual Audio Monitor. 4.8.17 Record final "As Left" values on the data sheet. 4.8.18 Proceed with the Calibration / Calibration Check or
" Return to Normal" in accordance with Section 4.10.
4.9 Visual Display Module Calibration 4.9.1 Connect a function generat.or to the " CAL" input at the
ICP-1-VMS-01 Page 20 of 24 03-05-80 4.0 calibration / Calibration Check (cont.) rear of the Signal Conditioner module. Set the function generator frequency to approximately 5 KHz. 4.9.2 Connect a DVM to terminals 1 (+) and 2 () of the Visual Display Module being calibrated. 4.9.3 Slowly decrease the function generator output until the left-hand orange bar begins to flash, indicating an undervoltage fault. Record the "As Found" DVM reading on the data sheet. 4.9.4 Slowly increase the function generator output until the left-hand orange bar again begins to flash, indicating an overvoltage fault. Record the "As Found" DVM reading on the data sheet. 4.9.5 Decrease the function generator output below the alarm setpoint indicated by the right-hand orange bar on the display module. Then slowly increase the output until the bar begins to flash and record the "As Found" DVM reading on the data sheet. Verify that the associated computer alarm operates satisfactorily. 4.9.6 If the "As Found" values of Steps 4.9.3 or 4.9.4 were not within tolerence, proceed as follows: NOTE: Inform the Control Room Operator before performing the following step. 4.9.6.1 De-energize the VM System by opening breaker 14 on panel 1-EP-CB-80A and breader 13 on panel 2-EP-CB-80A. These panels are located ! 1 behind the Flux Mapping Instrumentation panels. i
ICP-1-VMS-01 Page 21 of 24 03-05-80 1 4.0 Calibration / Calibration Check (cont.) l 4.9.6.2 Remove the Visual Display Module (s) to be l calibrated. Mark all disconnected leads. NOTE: The nickel plated screws have right-handed threads; the' black oxide plated screws have left-handed threads. 4.9.6.3 If the Control Room Operator desired,. or if the display modules will be removed for a significant amount of time, re-energize the system by closing the breakers of Step 4.9.6.1. Ensure that the disconnected power leads of Step 4.9.6.2 are properly taped. After re-energizing the system, reset all alarms in the VMS cabinet. 4.9.6.4 Remove the display module to a suitable location and remove its access cover. Apply 120 VAC to terminals 7 (liue), 8 (neutral) and 9 (case ground) and a DC power source (0-5VDC) to terminals 1 (+) and 2 (-) of the module. 4.9.6.5 Adjust potentiometer R22 (zero-located at the center of the input and power suppy card) and i potentiometer R17 (Span-located at the lower l right) as required to bring the undervoltage and overvoltage fault alarms within tolerence. NOTE 1: Do not adjust RIO located directly above R17. It should be set at minimum resistance for maximum response time. NOTE 2: The undervoltage fault should be set for maximum stability below 20 mVDC.
ICP-1-VMS-01 Page 22 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) 4.9.6.6 Replace the visual Display Module. If necessary, de-energize the VM System per Step 4.9.6.1. 4.9.6.7 Re-energize the VM System. Reset all alarms in the VMS cabinet. 4.9.6.8 Repeat Steps 4.9.1 through 4.9.4 as required. Record final "As Left" values. 4.9.7 If the "As Found" value of Step 4.9.5 was not within tolerence, remove the top end cap of the display module and adjust the setpoint potentiometer as required. Repeat Step 4.9.5 and record the final "As Left" setpoint on the data sheet. 4.9.8 Return the VM System to " Normal" in accordance with Section 4.10. 4.10 Return to Normal 4.10.1 Remove all test equipment. 4.10.2 If applicable, return the Signal Conditioner modules (s) being calibrated to their proper location in the VMS I cabinet. Refer to Step 4.1.1 for proper cable re-l placement. 4.10.3 If a Signal Conditioner module or Visual Display module , l was removed for calibration, perform the following l functional check. If only a Visual Display module was i I removed, perform only those steps marked (*). l l *4.10.3.1 Connect a function generator to the " CAL" input oc the rear of the Signal Conditioner module being calibrated . Monitor the
~ . . . .
ICP-1-VMS-01 Page 23 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.) function generator output with a DVM. 4.10.3.2 Adjust the function generator for a 5 KHz, 10.0 1 mVRMS output. 4.10.3.3 Adjust the signal conditioner module front panel controls as follows: HI-ALARM (IN) LO-ALARM DEFEAT HP (filter) IN LP (filter) IN SENS (pC/g) 10.0 FULL SCALE RANGE I HI-ALARM Per Step 4.3.2 4.10.3.4 Verify that the "% FULL SCALE" meter indicates 100% 3%. 4.10.3.5 Increase the GAIN on the Audio Monitor and verify that an audio tone is heard on channel number 1. 4.10.3.6 Press the " READ-HI ALARM" and verify that the HI ALARM is set per Step 4.6.10. 4.10.3.7 Reset the HI ALARM at the Master Alarm module. Verify that annunciator IC A-4 is reset. 4.10.3.8 Press the " TEST-HI ALARM" button and verify that the HI-ALARM indicator on the VMS module and Master Alarm module and annunciator IC A-4, " PRESSURIZER SAFETY VALVE OR PORV OPEN," acutate. 4.10.3.9 Reset all alarms. 4.10.3.10 Press the " READ PREAMP BIAS" button and verify a reading of 55% 15% on the "% FULL SCALE" meter.
ICP-1-VMS-01 Page 24 of 24 03-05-80 4.0 Calibration / Calibration Check (cont.)
*4.10.3.11 Vary the function generator input over the full range of the Visual Display module being calibrated. Verify that the undervoltage fault, overvoltage fault, high alarm and associated computer alarm operate satisfactorily.
*4.10.3.12 Remove all test equipment from the Signal Conditic 3r.
4.10.4 Set the HI-ALARM and FULL SCALE RANGE switches per Step 4.3.2. Set the SENS (pC/g) dial per Step 4.3.2 or 4.7.14 as applicable. 4.10.5 Verify with the Control Room Operator that all indi-cations and alarms of Step 2.1 are normal for plant conditions. - 4.10.6 Inform the Shift Supervisor that the Valve Monitoring System calibration has been completed and the system returned to normal or as noted in the " REMARKS" section of the data sheet.
/ .
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Precautions and Limitations of Section 3.0 are noted and satisfied. All test equipment used in the performance of this procedure is recorded below. MODEL NO. VEPCO QC NO. NOMENCLATURE UNSAT. MAINT. REPORT NO. TEST RESULTS(INITIAL) SAT. REMARKS i i Applicable section of the procedure have been completed. Technician Sign. Verification that the test was properly performed, and the instru-2nd Tech. Sign, mentacion was returned to nonnal status. INSTRUMENT SUPERVISOR REVIEW
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h ANo.chrnent F etv "g tbc ^"" - V O [ ,4 the 9h p r C089os g. Page 1 of 2 pot \0
- c. Ond a r0Y 03-12-80 963 QS te.f0 4
U Ng3eub,to gir@ to D' ' \ d^ 0 ad SU p ;% r k\ rC9I& ,Sw; V . A ELECTRIC AND POWER COMPANY ano'- ;g.eDt ' NORTH ANNA POWER STATION
. tbW
( HOURS OF WORK
- Non-Shift Employees The normal working hours for all non-shift IBEW employees shall be from 6:45 a.m. to 3:15 p.m. Monday through Friday, with one-half hour for lunch. The normal working hours for all non-shift supervisory, odmini-strative, and UEA employees shall be from 7:45 a.m. to 4:15 p.m. Monday through Friday, with one-half hour for lunch.
Each supervisor is responsible for ensuring that the working hours are properly observed. Non-shift personnel may from time to time be as-signed to shift work to meet the needs of the company and special work hours may consequently be established.
- Shift Employees
- 1. Shift operators shall adhere to a posted, rotating shift schedule.
The shift hours shall be as follows: First Shift - 8:00 a.m. to 4:00 p.m. Second Shift - 4:00 p.m. to Midnight Third Shift - Midnight to 8:00 a.m.
- 2. Security shif t personnel shall adhere to a posted, rotating shif t schedule. The shift hours shall be as follows:
NOT A CONTROLLED First Shif t - 7:00 a.m. to 3:00 p.m. DMM Second Shift - 3:00 p.m. to 11:00 p.m. g~ Third Shift - 11:00 p.m. to 7:00 a.m. Nu,i iGL_ eLY THE
- Hours of work may be changed with the approval of the Station fl3 napy.y;c;,3 Overtime Hours The following guidance applies to all personnel performing a safety related function that could affect core reactiv.ty or that could endanger
4.. a ADM-3.0 Page 2 of 2 03-12-80 the safe operation of the facilty. In the event that special circumstances arise these guidelines may be changed temporarily by the Station Manager or Superintendent. Scheduled work should be limi.ed to the following maximust work hours:
- 1. An individual should not be permitted to work more than 12 houer straight (not including shift turnover time).
- 2. There should be at least a 12-hour break between all work periods (shif t turnover time is included in this 12-hour break).
- 3. An individual should not work more than 72-hours in any 7-day period.
- 4. An individual should not work more than 14 consecutive days without having 2 consecutive days off, l ,
Approved By: [p CHAIRMAN STATION NUCLEp. SAFETY AND OPERATING COMNITTEE Date: 03-12-80}}