J-1502000-23 MP-217_D_00_SB.pdf

[MASTER] MP-217 Rev:C Chg:00 Serial:0000000000

[MASTER]

SUB-BASE CIF / EB CIF / NRF FACILITIES PROCEDURE

GENERAL DYNAMICS

Electric Boat Corporation NSI 209 Revision A EFFECTIVE DATE: February 28 ,2007

Facility Procedures

5. APPLICABLE

EB CIF

SB CIF

NRF

1. PROCEDURE NUMBER

MP-217

3. REV

D

4. CHANGE

8. FILE & SERIAL NO.

9. SUPERSEDES

MP-217, Rev C, CN 01

6. EFFECTIVE DATE

11/20/13

7. COMPONENT ID

YES N/A

2. TITLE

OPERATION AND MAINTENANCE OF HIGH BAY HVAC SYSTEM (AHU-2 AND EF-5/6)

PREPARED BY: CONCURRENCE:

10. COGNIZANT ENGINEER / DEPT / BADGE

/S/ J. LEWIS 473 145145

DATE

10/15/13

12. NUCLEAR OP’S (OPL) / DEPT / BADGE

/S/ J. SCHAEFFER 792 532060

11. NUC ENG SUPERVISOR / DEPT / BADGE

/S/ G. SOUTHARD 473 091815

13. RADCON ENGINEERING / DEPT / BADGE

YES N/R

14a. OTHER / DEPT / BADGE

14b. OTHER / DEPT / BADGE

15a. “RECORD WORK COPY” REQD

YES NO

15b. “STEP TRACKING” REQD

YES NO

Operations Lead Trade Foreman Enter Construction Start Date --->

23. CONSTRUCTION START DATE

TASK COMPLETION:

16. WORK COMPLETE /

LEAD TRADE FOREMAN / DEPT / BADGE

17. RECORDS REVIEW REQUIRED

COG ENG / DEPT / BADGE

17a. RECORDS REVIEW NQCI / DEPT / BADGE

QUALITY ADVOCATE REVIEW:

18. NUCLEAR ENG QUALITY ADVOCATE / DEPT /BADGE

473 YES N/R

19. QUALITY ADVOCATE RECORDS COMPLETE

DATA RECORDING COMPLETE

21. SPECIAL INSTRUCTIONS

Minor changes to this form that do not affect the technical requirements or content can be made by "Nuclear Quality Advocate" without the re-issue of this SSP. Any special instructions will be provided on updated form. This form is electronic. A link to “Template” may be found on D473 Quality Advocate WEB Site or on the Shared drive: X:\Eng.473\D473.forms_templates

List of Effective Pages

Page Revision Change 1 – 40 D 00

Table of Contents

Page

1.0 REFERENCES 4

2.0 PURPOSE 4

3.0 PRECAUTIONS / PREREQUISITES / GENERAL 4

4.0 MATERIAL 8

5.0 PROCEDURE 9

6.0 ATTACHMENTS 17

6.1 Shutdown Due To Unknown Cause 18

6.2 HVAC Alarm Panel with Labeling 19

6.3 Manual Override Panel 20

6.4 Monthly Preventive Maintenance 21

6.5 Quarterly Preventive Maintenance 24

6.6 Semi-Annual Preventive Maintenance 30

6.7 Annual Preventive Maintenance 36

6.8 Comment Sheet 40

1.0 REFERENCES

1.1 MP-200, Program for Preventive Maintenance and Inspection of CIF Equipment

1.2 NAVSEA DWG 2170471 - CIF Controlled Air Flow Diagram

1.3 NAVSEA DWG 2170470 - CIF HVAC Exhaust Schematic

1.4 NAVSEA DWG 2170469 - CIF HVAC Supply Schematic

1.5 NAVSEA DWG 2171465 - CIF First Floor HVAC Plan

1.6 Corporate Nuclear Power Manual (CNPM)

1.7 NRMD Safety Manual

1.8 OP-307, CIF Security Watch

2.0 PURPOSE

2.1 The purpose of this procedure is to provide instructions for operation and maintenance of the High Bay Area Heating, Ventilation and Air Conditioning (HVAC) Systems, References 1.2 through 1.4, and the Fixed Filter Air Particle Sampler (FAPS) at the SUBASE (NRMD) Controlled Industrial Facility (CIF).

3.0 PRECAUTIONS / PREREQUISITES / GENERAL

3.1 Precautions

3.1.1 Radiological work, excluding drape and catch controls, must be secured if ventilation is lost or secured.

3.1.2 Manual operation of the High Bay Area HVAC system can cause positive or excessive negative pressure in Controlled Areas. Specific written instructions are required from Nuclear Engineering for manual operation ("HAND" mode). This procedure does not authorize operation of the High Bay Area HVAC System (AHU-2 and EF-5/6) in the manual mode of operation.

3.1.3 If the operating Controlled Exhaust System fan is not operating or is secured from operation, the Direct Digital Control (DDC) system will secure all Controlled HVAC Systems (AHU-2 and EF-5/6).

3.0 PRECAUTIONS / PREREQUISITES / GENERAL (Continued)

3.1.4 This procedure does not provide instructions for operation or for resetting set points or checking operating conditions of the High Bay Area HVAC System via the DDC System computer workstations (or via hand-held or notebook computers which are able to interact with the DDC System); personnel are required to undergo separate training to become qualified for operational access to the DDC computer system. This procedure does not provide instructions for operation/maintenance of the High Bay Area HVAC DDC System hardware (temperature probes, pressure transducers, etc.), which send or receive instructions from the DDC System controller.

3.1.5 This procedure does not provide information on operation of the HVAC system serving the Administration portion of the CIF or the Enclosed Storage Area (ESA), Room 101.

3.2 Prerequisites

3.2.1 Ensure Contamination Survey of ducting downstream of HEPA filters has been performed per Article 515 of NAVSEA 389-0288 prior to opening system. No radiological controls are required to open/enter ducting downstream of the HEPA filters if required survey per Article 515 of NAVSEA 389-0288 is up to date.

3.3 General

3.3.1 This procedure is applicable to equipment and components which are part of the High

Bay Area HVAC Systems (including some monitoring and control devices). Reference

1.5 provides details of the HVAC Systems.

3.3.2 This procedure provides instructions on how to engage the automatic mode of operation for the High Bay Area HVAC Systems and also how to secure these systems from operation.

3.3.3 Copies of the PM forms in the Attachments shall be filed in the machinery history binder.

3.3.4 Controlled Areas are those areas which are maintained at a negative differential pressure with respect to the weather and with respect to the non-controlled areas of the CIF.

3.3.5 Controlled Areas in the CIF are as follows: High Bay Area - Room 103 (includes the

Liquid Processing Area - Room 102), Equipment Cleaning Room - Room 104, Chemistry Lab - Room 105, Personnel Shower - Room 106, Control Point - Room 107, Control Room - Room 108, and the Clean Work/Gage Calibration Room - Room

109. The ESA, Room 101, is not considered a Controlled Area.

3.0 PRECAUTIONS / PREREQUISITES / GENERAL (Continued)

3.3.6 The CIF Controlled Area HVAC Systems has three (3) modes of operation: “HAND”, “OFF” and “AUTO”. The mode of operation (“HAND”, “OFF” or “AUTO”) for the system is set at that system’s Manual Override Panel in the Control Room (see Attachment 6.3) and at the EF-5/6 and AHU-2 local control panels.

3.3.7 Tagout/lockout systems and equipment as necessary in accordance with (IAW)

Reference 1.7.

3.3.8 The Controlled Area HVAC system provides the primary freeze protection for the fluid systems located in the High Bay.

3.3.9 The “Hand/Off/Auto” switch at the breaker on the Motor Control Center (MCC) located in the Electrical Room is only connected as an on/off switch. The “HAND” position is on and the “OFF” and “AUTO” positions are off and may be covered to prevent confusion.

3.3.10 The exhaust system has two fans that are mounted in parallel but only one fan is to operate at a time. Fan operation should be swapped Monthly (approximately 720 hours of operation) as described in Attachment 6.4, step 6.4.1.

3.3.11 “EF5 at 360 Hours” or “EF6 360 Hours” lights on the “MANUAL OVERRIDE PANEL” indicate that the operating exhaust fans have been operating for more than 360 hours.

This indicator is to be reset when the system is secured and the other exhaust fan is started after 720 hours (one month of operation) as indicated in General 3.3.10.

3.3.12 The “Fans Running” light on the HVAC Alarm Panel indicates that one of the exhaust fans has power available at the local disconnect switch. The light should be on when the system is running.

3.3.13 The “Alarm Panel Energized” light on the HVAC Alarm Panel indicates the panel has power available. The light is to be on when the system is running.

3.3.14 The “Loss of Negative D/P between High Bay and Weather” alarm indicates that the building differential pressure (D/P) is not negative. There is a delay function on this alarm to prevent excessive alarming when doors are opened but it may still “chirp” if exterior doors are not secured. The alarm can be silenced at the panel but negative pressure must be re-established for the alarm to be reset. In case of alarm insure that all the exterior doors are closed. If doors are closed and alarm continues, notify Nuclear Engineering and secure radiological work excluding drape and catch controls.

3.3.15 The “Power Available APS for Exhaust” light indicates that there is power to the APS circuit.

3.0 PRECAUTIONS / PREREQUISITES / GENERAL (Continued)

3.3.16 f a qualified service contractor is hired to perform preventive maintenance, then the contractor must use the filters, belts and grease specified in Section 4.0. The remainder of the procedure does not apply to contractors. The contractor must perform all maintenance IAW equipment manufacturer’s procedures. Step tracking may be marked “N/A Performed by Vendor” for any work steps accomplished by the service contractor.

3.3.17 Attachments 6.2 (HVAC ALARM PANEL) and 6.3 (MANUAL OVERRIDE PANEL) have been provided for visual reference.

3.3.18 The “APD Loss of Power” alarm on the HVAC ALARM PANEL will sound when the APD unit loses power. The “High Airborne in the Equipment Cleaning Rm” alarm will sound when the APD detects airborne radioactivity above the allowable limits. The APD has temporarily been removed from the CIF. At this time these alarms should not sound.

3.3.19 It is intended that one (1) Record Work Copy be used for an entire calendar year.

3.3.20 The major sections of this procedure, 5.1 through 5.6 and 6.4 through 6.7, are considered “stand-alone” procedures and may be accomplished when necessary. N/A unused sections and steps as required.

3.3.21 Document all discrepancies in GP-101.

3.4 RADIOLOGICAL INFORMATION STATEMENT

Ventilation ducting downstream of HEPA filter is considered a Monitored System.

Prior to working on any component downstream of HEPA filters notify Radiological Control prior to opening AHU-2 or EF-5/6 ventilation systems. No components upstream of HEPA filter will be worked in this procedure. Ensure Contamination Survey of ducting downstream of HEPA filters has been performed per Article 515 of NAVSEA 389-0288 prior to opening system. No radiological controls are required to open/enter ducting downstream of the HEPA filters if required survey per Article 515 of NAVSEA 389-0288 is up to date.

4.0 MATERIAL

Material List Item No.

Qty Piece Mark

Description Drawing/ Specification

Stock Number

EB/NSN

Level Purpose

4.1 5 NA DDC system light bulb, 24 Volt, .073 AMP, TYP 937-9500

NA Allied Electronics NA DDC System Alarm Panels

4.2 4 NA Filters NA 20 x 24 x 2 Throw Away, Dayton Electric (Grainger) or equal

NA Outside Air Filters

4.3 4 NA V-Belt, industrial strength, oil and heat resistant, Size BX59

Rubber Commercial (Fleetrite, Dayco or equal)

NA AHU-2 belts

4.4 2 NA V-Belt, industrial strength, oil and heat resistant, 5VX640

Rubber Commercial (Browning, Dayton or equal)

NA EF-5/6 belts

4.5 1 NA Grease NLGI #2 SKF LGEP2 NA AHU-2 Fan Bearing Lubrication

4.6 1 NA Grease NLGI #2 SKF LGWA 2 NA EF-5/6 Fan Bearing Lubrication

4.7 1 NA Coil Cleaning Detergent NA Nalco Diversified Technologies

(NDT) CL-126

NA AHU-2

Hot/Chilled Water Coils and Drain Pan

4.8 1 NA Hand Sprayer NA Flo Master 1 gallon or suitable alternate

NA Coil/drain pan cleaner

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5.0 PROCEDURE

5.1 SETTING UP THE CONTROLLED AREA HVAC SYSTEM TO RUN:

NOTES: (1) The following steps are required for setting up the systems to run in the automatic (“AUTO”) mode of operation.

(2) A step tracking table is provided on page 14.

(3) See Attachment 6.2 for location of switches/lights on the HVAC control panel

5.1.1 Ensure no work is being done on the exhaust fans or the air handling unit prior to starting the units.

5.1.2 MANUAL OVERRIDE PANEL: Verify the “SYSTEM MODE SELECTOR SWITCH” is in the “OFF” position. Turn the “EF5 EF6 Select” to either “EF5” or “EF6”, whichever fan will be the operating exhaust fan.

5.1.3 LOCAL CONTROL PANEL: Place the local disconnect switches for EF-5/6 and AHU-

2 to the “ON” position. Place EF-5/6 and AHU-2 “Hand/Off/Auto” switch in “Auto” mode at the local control panel. The local control panel for both EF-5/6 is located between the fans in the ESA. The local control panel for AHU-2 is located on the east wall of the CIF.

5.1.4 ELECTRICAL SUPPLY POINT: At the EF-5/6 and AHU-2 panels on the MCC, located in the Electrical Room, Room 115, place/verify each breaker to the “ON” position. The “Hand/Off/Auto” switch must be in the “HAND” position.

5.2 NORMAL OPERATION – STARTING THE SYSTEM FROM THE “MANUAL OVERRIDE

PANEL”:

NOTE: A step tracking table is provided on page 14.

5.2.1 Station personnel at the fans and control panel that are in direct communication.

Remove all ventilation system tags/locks IAW Reference 1.7.

5.2.2 Ensure no work is being done on the exhaust fans or the air handling unit before attempting to start the ventilation.

NOTE: Operations Supervisor needs to obtain Nuclear Engineering approval prior to re-starting the Controlled HVAC System if it was previously shutdown due to an emergency (See Section 5.4).

5.2.3 Set up the systems to run as described in Section 5.1.

5.0 PROCEDURE (Continued)

5.2.4 START-UP:

NOTES: (1) Each time the CONTROLLED AREA HVAC SYSTEM is started, the following checks must be performed (except as noted below).

(2) If the ventilation system is de-energized by a known cause (e.g., power outage, accidentally or inadvertently changing position of operating switch or breaker, etc.) or is intentionally shutdown, the system may be re started in the “AUTO” mode without initiating a new Start-Up Procedure if re-start is performed within one (1) hour of the shutdown.

(3) If the ventilation system is de-energized by an unknown cause, complete Attachment 6.1, “Shutdown Due To Unknown Cause Table”. The system may be re-started in the “AUTO” mode without initiating a new Start-Up Procedure if re-start is performed within one (1) hour of the shutdown.

(4) If re-starting after an emergency shutdown, complete section 5.5.

(5) A step tracking table is provided on page 14.

5.2.4.1 Verify that the preventive maintenance items per Reference 1.1 are current for the system(s) to be started.

5.2.4.2 Verify the FAPS unit is plugged in and the “OFF / ON” switch is in the “ON” position.

5.2.4.3 At the “MANUAL OVERRIDE PANEL”, turn the “SYSTEM MODE SELECTOR

SWITCH” to the “AUTO” position. It may take several minutes before the system turns on.

5.2.4.4 Verify each system starts.

5.2.4.5 Close high-bay-to-ESA and ESA-to-outside doors sufficiently to maintain equal pressure between inside/outside of building.

5.2.4.6 At the “HVAC ALARM PANEL”, place/verify the “High Bay vs. Outside D/P” gage left and right knob switch set points positions; left to “0”and right to “0.1”. (See Attachment 6.2).

5.2.4.7 Verify that with all Controlled Area doors closed, the required negative D/P between the High Bay and the weather is established. The required negative D/P is denoted on the applicable D/P gage on the HVAC ALARM PANEL.

5.2.4.8 Perform the daily facility checks of Reference 1.8.

5.0 PROCEDURE (Continued)

5.3 NORMAL SHUTDOWN:

NOTE: A step tracking table is provided on page 15.

5.3.1 Prior to a “Non-Emergency” shutdown, verify that no radiological work is being performed in the High Bay that requires the controlled area ventilation system to be in operation.

5.3.2 Notify Radiological Control prior to shutting down the ventilation system.

5.3.3 Prior to shutdown, observe the operating fans/motors (AHU-2, EF-5/6) for excessive or unusual noise/vibration.

CAUTION: The Controlled Area HVAC system must be shut down immediately in cases of

Radiological Emergencies, immediate danger to personnel or damage to equipment.

5.3.4 Open high bay-to-ESA and ESA-to-outside doors sufficiently to maintain equal pressure between inside/outside of the building.

5.3.5 Secure the system by:

5.3.5.1 At the “MANUAL OVERRIDE PANEL”, shown in Attachment 6.3, located on the south wall of the Control Room, turn the “SYSTEM MODE SELECTOR SWITCH” to the “OFF” position. It may take several minutes before the system turns off.

5.3.5.2 Secure the “High Bay D/P Horn” at the “HVAC Alarm Panel”, as shown in Attachment 6.2, by placing the “High Bay vs. Outside D/P” gage left and right knob set points to ”0” or by pressing the “Alarm Silence” button.

5.3.5.3 Lockout/tagout AHU-2 and EF-5/6 local disconnect switches IAW Reference 1.7.

5.3.5.4 Turn the FAPS “OFF / ON” switch to the ”OFF” position.

5.3.6 Record the date and time of shutdown along with the type of shutdown (Normal) in the

System Shutdown Record, Table 5.4.2, on the next page.

CAUTION: To reduce the possibility of overloading fan electrical power circuits, a period of at least three (3) minutes must elapse between the time a fan is stopped and re-started; this includes momentary starts.

5.0 PROCEDURE (Continued)

5.4 EMERGENCY SHUTDOWN:

NOTE: A step tracking table is provided on page 15.

CAUTION: Emergency shutdown should only be used in cases of Radiological Emergencies, immediate danger to personnel or damage to equipment.

5.4.1 Press the “EMERGENCY STOP” button on the “MANUAL OVERRIDE PANEL”.

5.4.2 Turn the FAPS “OFF / ON” switch to the ”OFF” position.

5.4.3 Record the date and time of shutdown along with the type of shutdown (Emergency) in the System Shutdown Record, Table 5.4.2, below.

Table 5.4.2 – Normal and Emergency System Shutdown Record

Name Department Type of Shutdown Date Time

5.0 PROCEDURE (Continued)

5.5 RE-STARTING THE SYSTEM FROM “MANUAL OVERRIDE PANEL” AFTER AN

EMERGENCY SHUTDOWN:

NOTE: A step tracking table is provided on page 15.

5.5.1 NRMD Facilities Supervisor obtain Nuclear Engineering approval prior to re-starting the Controlled HVAC System if it was shut down using the “EMERGENCY STOP” button. The approving engineer fills out the table below:

Table 5.5.1 – Nuclear Engineering Approval

Engineer Signature Badge Number Date

5.5.2 Turn the “SYSTEM MODE SELECTOR SWITCH” to “OFF” position.

5.5.3 Push the “Emergency Stop” button.

5.5.4 Reset/verify reset breakers for AHU-2 and the exhaust fan previously running. They are located in the MCC in the Electrical Room (Room 115).

5.5.5 Nuclear Engineering or Operations Supervisor reset the ventilation computer for the system.

5.5.6 Set up the system to run as described in Section 5.1 and start as described in Section

5.2.

5.1 SETTING UP THE CONTROLLED AREA HVAC SYSTEM TO RUN

Step Complete Date Complete Date Complete Date Complete Date

5.1.1

5.1.2

5.1.3

5.1.4

5.2 NORMAL OPERATION

5.2.1

5.2.2

5.2.3

5.2.4.1

5.2.4.2

5.2.4.3

5.2.4.4

5.2.4.5

5.2.4.6

5.2.4.7

5.2.4.8

This sheet may be duplicated and added to the back of Record Work Copies as required.

5.3 NORMAL SHUTDOWN

5.3.1

5.3.2

5.3.3

5.3.4

5.3.5.1

5.3.5.2

5.3.5.3

5.3.5.4

5.3.6

5.4 EMERGENCY SHUTDOWN

5.4.1

5.4.2

5.4.3

5.5 RE-STARTING THE SYSTEM AFTER AN EMERGENCY SHUTDOWN

5.5.1

5.5.2

5.5.3

5.5.4

5.5.5

5.5.6

5.0 PROCEDURE (Continued)

5.6 PREVENTIVE MAINTENANCE (PM)

NOTES: (1) The daily inspections are performed in Reference 1.8.

(2) All PM’s should be scheduled to coincide with the Monthly exhaust fan swap if possible. This will minimize fan cycling. Multiple PM’s may be performed concurrently or in any order deemed appropriate by the operation supervisor or designated person.

(3) Step tracking is accomplished by completing the applicable PM Attachment

Step Tracking Charts.

(4) Preventative maintenance may be performed early or delayed up to the maximum time allowed by MP-200. Report any deficiencies to Nuclear Engineering.

5.6.1 MONTHLY PREVENTIVE MAINTENANCE:

Perform the monthly preventive maintenance per Attachment 6.4.

5.6.2 QUARTERLY PREVENTIVE MAINTENANCE:

Perform the quarterly preventive maintenance per Attachment 6.5.

5.6.3 SEMI-ANNUAL PREVENTIVE MAINTENANCE:

Perform the semi-annual preventive maintenance per Attachment 6.6.

5.6.4 ANNUAL PREVENTIVE MAINTENANCE:

Perform the annual preventive maintenance per Attachment 6.7.

6.0 ATTACHMENTS

6.1 Shutdown Due to Unknown Cause

6.2 HVAC Alarm Panel

6.3 Manual Override Panel

6.4 Monthly Preventative Maintenance

6.5 Quarterly Preventative Maintenance

6.6 Semi-Annual Preventative Maintenance

6.7 Annual Preventative Maintenance

6.8 Comment Sheet

Attachment 6.1

6.1 SHUTDOWN DUE TO AN UNKNOWN CAUSE

Complete the following table, “Shutdown Due to an Unknown Cause”, if a ventilation system is de-energized by an unknown cause.

HVAC SYSTEM(S): __________________________________________

1. Identify date, time and circumstances of shutdown:

Name: ________________________________________________ Date/Time System shutdown: ___________________________________ Brief description of circumstances related to shutdown event:

2. List below all alarms (visual and audible) on the HVAC ALARM PANEL and the

VENTILATION PANEL (DDC System CONTROL PANEL CP-5) which were still activated after the system(s) shutdown and prior to restart.

3. Was DDC operator required to re-start system from DDC Workstation? If so, provide brief summary of DDC operator action(s) required for system(s) re-start below:

DDC Operator Name: _____________________________________ Date: ______________________

4 Provide a brief summary below of other actions required to re-start system(s):

REMARKS:

Attachment 6.2

6.2 HVAC ALARM PANEL

HVAC Alarm Panel

Differential Pressure between Control Room & Admin Corridor

Differential Pressure between High Bay & Weather

Alarm Panel Energized

Fans Running Push to Silence Push to Silence

Push to Silence Push to Silence

Exhaust Fan EF-5 Hour Meter

Exhaust Fan EF-6 Hour Meter

Loss of Negative D/P between High Bay & Weather

APD High Airborne in EQ Cleaning Room

Power Available APS for Exhaust

APD Loss of Power

Attachment 6.3

6.3 MANUAL OVERRIDE PANEL

System Mode Selector Switch

HAND OFF AUTO

Emergency Stop

EF5 EF6 Select

EF5 EF6

EF5 at 360 Hours

EF6 at 360 Hours

Attachment 6.4

6.4 MONTHLY PREVENTIVE MAINTENANCE:

Note (1) If the system has been previously secured for preventative maintenance, N/A Step 6.4.1.1.

(2) Monthly PMs do not need to be performed during the same shutdown. Mark sections and steps not performed as N/A and proceed to Step 6.4.3.

6.4.1 Swap exhaust fan (EF-5/EF-6) operation as follows:

6.4.1.1 Secure and lockout/tagout the system IAW Section 5.3, Normal Shutdown.

6.4.1.2 At the “MANUAL OVERRIDE PANEL” swap the exhaust fan by positioning the fan selector toggle “EF-5 EF-6 SELECT” to the fan to be operated. If AHU-2 will be shut down for maintenance, then exhaust fans may be switched during the normal startup of AHU-2 after maintenance.

6.4.1.3 Record the indicated run hours for the fan that was just secured on the EF-5/6 Fan

Swapping Chart on the following page, and reset/verify the hour meter to zero for the fan that was just secured.

6.4.2 Grease AHU-2 fan bearings as follows:

CAUTION: Do not enter fan compartment while fan is running.

6.4.2.1 Open AHU-2 fan access door and locate grease fitting extension tubes.

6.4.2.2 Check grease lines for tight connections to grease fittings.

6.4.2.3 Wipe grease fitting clean.

6.4.2.4 Apply grease (Item 4.5) to each fitting. Rotate the fan shaft while slowly operating manual grease gun. Add grease until clean grease emerges from the bearing.

6.4.2.5 Wipe excess grease from zerk fittings and bearings. Close fan access door.

6.4.2.6 Record “Date” each fan is greased in the AHU-2 Fan Greasing Chart.

6.4.3 If other preventative maintenance must be performed, mark this step N/A and proceed to the applicable section. If no other maintenance activities are to be performed, restart the ventilation system and observe fans/motors for excessive or unusual noise/vibration IAW Section 5.2, Normal Operation.

Attachment 6.4

6.4 MONTHLY PREVENTIVE MAINTENANCE: (Continued)

MIP Task Step Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

Cmplt/ Date

VS-M-M-3

6.4.1.1

6.4.1.2

6.4.1.3

VS-M-M-4

6.4.2.1

6.4.2.2

6.4.2.3

6.4.2.4

6.4.2.5

6.4.2.6

Ventilation System Re-

Start (Not MP- 200 Task)

6.4.3

Attachment 6.4

6.4 MONTHLY PREVENTIVE MAINTENANCE: (Continued)

EF-5/6 FAN SWAPPING CHART

Fan Swapped Date Hours Run Operations Initials

AHU-2 FAN GREASING CHART

Fan Greased Date Operations Initials

Attachment 6.5

6.5 QUARTERLY PREVENTIVE MAINTENANCE:

NOTES: (1) If the system has been previously secured for preventative maintenance, mark

N/A for step 6.5.1.2 and 6.5.2.

(2) Quarterly PMs do not need to be performed during the same shutdown. Mark sections and steps not performed as N/A and proceed to step 6.5.9.

6.5.1 Inspect exhaust system (EF-5/6) terminal grills for cleanliness as follows:

6.5.1.1 Visually inspect each exhaust terminal grill to verify that airflow is unobstructed. If grill must be cleaned then secure the ventilation system.

6.5.1.2 Secure and lockout/tagout the system IAW Section 5.3, Normal Shutdown.

6.5.1.3 If necessary, remove dust/debris with a clean rag. No contamination controls are required to perform this step.

6.5.2 Secure and lockout/tagout the ventilation system for all remaining quarterly PM items IAW Section 5.3, Normal Shutdown.

6.5.3 Replace AHU-2 outside air filters as follows:

6.5.3.1 With the ventilation system secured IAW Section 5.3, open outside air filter access door and remove filters. Install new filters, ensuring arrows on filters are pointing in the direction of airflow. Dispose of old filters.

6.5.4 Check EF-5 & EF-6 belt sheaves as follows:

6.5.4.1 Remove belt guard to gain access to drive belt.

6.5.4.2 Check-drive belt condition. Check sides of belts for fraying, the bottom for cracking.

Check the belt for local discoloration caused by heat from chafing or rubbing. Belt replacement should be performed by a qualified technician or HVAC service contractor.

6.5.4.3 If the fan belts are used then check tension by measuring belt deflection midway between sheaves (as shown below in Figure 6.5.1), using a belt tension checker.

Deflection for each belt should be 23/64 inch with a deflection force of 5.6lbs.

Adjust belt tension as necessary by loosening the motor plate hinge bolts and adjusting the jackscrews as required. Adjustments are to be performed by a qualified technician or HVAC service contractor. If no adjustments are required, mark steps

6.5.4.3 through 6.5.4.4.4 N/A.

Attachment 6.5

6.5 QUARTERLY PREVENTIVE MAINTENANCE: (Continued)

Figure 6.5.1: Belt Tension Deflection

NOTE: Loose belt may be due to worn sheaves or belt. Inspect belts and sheaves prior to adjusting tension. If belt slips during fan startup, tension may need to be increased.

6.5.4.4 If belts are new (just replaced), check tension as follows:

6.5.4.4.1 Check-drive belt tension by measuring belt deflection midway between sheaves (see

Figure 6.5.1) using a belt tension checker. Deflection for each belt should be 23/64 inch with a deflection force of 8.5lbs.

NOTE: Lockout/tagouts on AHU-2, EF-5/6 local disconnect switches shall be cleared and reinstalled IAW Reference 1.7 as necessary to perform steps 6.5.3.4.2 through 6.5.4.4.4.

6.5.4.4.2 Run the fan for 3 to 5 minutes (to seat the belts) and then recheck the deflection and adjust, if necessary, to 23/64 inch with a deflection force of 8.5lbs.

6.5.4.4.3 Run the fan for 8 hours (or until end of shift) and then recheck the deflection and adjust, if necessary, to 23/64 inch with a deflection force of 8.5lbs.

6.5.4.4.4 Recheck the tension after the unit has run for a minimum of 24 hours and then recheck the deflection and adjust, if necessary, to 23/64 inch with a deflection force of 5.6lbs.

6.5.4.5 Check sheaves for tightness on the motor and blower shafts. Check for wear on the sheaves. Replace worn sheaves. Sheave adjustment or replacement should be performed by a qualified technician or HVAC service contractor.

Attachment 6.5

6.5.5 Align EF-5/6 fan and motor sheaves as follows:

6.5.5.1 Place a straight edge across the flat edge of the sheaves. (See Figure 6.5.2 below)

Ensure straight edge touches the sheaves at point A, B, C and D. If necessary, adjust sheaves for proper alignment. Sheave adjustments should be performed by a qualified technician or HVAC service contractor. If sheave alignment is adjusted then recheck belt tension per step 6.5.4.3 or 6.5.4.4 (as applicable) after alignment.

Figure 6.5.2: EF 5/6 Sheave Alignment

6.5.5.2 Reinstall belt guard.

6.5.6 Check AHU-2 belts and sheaves as follows:

6.5.6.1 Remove belt guard. Check drive-belt condition. Check sides of belts for fraying, the bottom for cracking. Check the belt for local discoloration caused by heat from chafing or rubbing. Replace belts if necessary. Belt replacement must be performed by a qualified technician or HVAC service contractor.

6.5.6.2 Check drive-belt tension by measuring belt deflection midway between sheaves (as shown above). Deflection should be approximately 17/64 inch at 5.8 lbs force for each belt. Adjust belt tension as necessary by loosening the motor plate hinge bolts and adjusting the jackscrews as required. Adjustments are to be performed by a qualified technician or HVAC service contractor. If no adjustments are required, mark steps 6.5.6.3 through 6.5.6.3.4 N/A.

NOTE: Loose belt may be due to worn sheaves or belt. Inspect belts and sheaves prior to adjusting tension.

6.5.6.3 If belts are new (just replaced), check tension as follows: (Fan belt adjustments should be performed by a qualified technician or HVAC service contractor.)

6.5.6.3.1 Check drive belt tension by measuring belt deflection midway between sheaves

(as shown on the previous page) using a belt tension checker (Item 4.9).

Deflection should be approximately 17/64 inch at 5.8 lbs force for each belt.

B

Straight Edge

D C A

Attachment 6.5

NOTE: Lockout/tagouts on AHU-2, EF-5/6 local disconnect switches are to be cleared and reinstalled IAW Reference 1.7 as necessary to perform steps 6.5.6.3.2 through 6.5.6.3.4.

6.5.6.3.2 Run the fan for 3-5 minutes (to seat the belts) and then recheck the deflection and adjust, if necessary, to approximately 17/64 inch at 5.8 lbs force for each belt.

6.5.6.3.3 Run the fan for 8 hours (or until end of shift) and then recheck the deflection and adjust, if necessary, to approximately 17/64 inch at 5.8 lbs force for each belt.

6.5.6.3.4 Recheck the tension after the unit has run for 24 hours and then recheck the deflection and adjust, if necessary, to approximately 17/64 inch at 5.8 lbs force for each belt.

6.5.6.4 Check sheaves for tightness on the motor and blower shafts. Check for wear on the sheaves. Replace worn sheaves. Sheave adjustment or replacement is to be performed by a qualified technician or HVAC service contractor.

6.5.7 Align AHU-2 fan and motor sheaves as follows:

6.5.7.1 Place a straight edge across the flat edge of the sheaves. (See Figure 6.5.3)

Ensure straight edge touches on the sheaves at point A, B, C and D. If necessary, adjust sheaves for proper alignment. Sheave adjustments are to be performed by a qualified technician or HVAC service contractor. If sheave alignment is adjusted then recheck belt tension per step 6.5.5.2 or 6.5.5.3 after alignment.

Figure 6.5.3: AHU-2 Fan Alignment

6.5.8 Check air vents on AHU-2 and EF-5/6 motors and verify they are clean and unobstructed. If necessary, use vacuum to clean vents.

6.5.9 If other preventative maintenance must be performed, mark this step N/A and proceed to the applicable section. If no other maintenance activities are to be performed, restart the ventilation system from the “MANUAL OVERRIDE PANEL” IAW Section 5.2, Normal Operation.

B

Straight Edge

D C A

Attachment 6.5

QUARTERLY PREVENTATIVE MAINTENANCE

MP-200

Task

Step Complete Date Complete Date Complete Date Complete Date

VS-M-Q-2

6.5.1.1

6.5.1.2

6.5.1.3 Ventilation

System Shutdown (Not MP- 200 Task)

6.5.2

VS-M-Q-1 6.5.3.1

VS-M-Q-4

EF-5

6.5.4.1

6.5.4.2

6.5.4.3

6.5.4.4.1

6.5.4.4.2

6.5.4.4.3

6.5.4.4.4

6.5.4.5

EF-6

6.5.4.1

6.5.4.2

6.5.4.3

6.5.4.4.1

6.5.4.4.2

6.5.4.4.3

6.5.4.4.4

6.5.4.5

Attachment 6.5

QUARTERLY PREVENTATIVE MAINTENANCE

MP-200

Task

Step Complete Date Complete Date Complete Date Complete Date

VS-M-Q-4

EF-5

6.5.5.1

6.5.5.2

EF-6

6.5.5.1

6.5.5.2

VS-M-Q-5

6.5.6.1

6.5.6.2

6.5.6.3.1

6.5.6.3.2

6.5.6.3.3

6.5.6.3.4

6.5.6.4

VS-M-Q-5 6.5.7.1

VS-E-Q-2 6.5.8

Ventilation

System Re-Start (Not MP- 200 Task)

6.5.9

Attachment 6.6

6.6 SEMI-ANNUAL PREVENTIVE MAINTENANCE:

N/A for section 6.6.1.

(2) Semi-annual PMs do not need to be performed during the same shutdown. Mark sections and steps not performed as N/A and proceed to step 6.6.8.

6.6.1 Secure and lockout/tagout the ventilation system for all semi-annual PM items IAW Section 5.3, Normal Shutdown:

6.6.2 Check AHU-2 and exhaust system (EF-5/6) HEPA filter flow dampers for proper operation as follows:

6.6.2.1 Mark damper position (removable marking) on the actuator for AHU-2 damper.

6.6.2.2 Open access door to damper and cycle open and closed. Verify damper operates properly and that there is no slippage of the actuator linkage. Inspect damper for any visible defects. Close access door. Put damper back to position marked in step 6.6.2.1.

6.6.2.3 Mark damper position on the actuator for EF-5/6 damper (removable marking).

6.6.2.4 Open access hatch to damper and cycle open and closed. Verify damper operates properly and that there is no slippage of the actuator linkage. Inspect damper and rubber seal for any visible defects. Close access hatch. Put damper back to position previously marked.

6.6.3 Inspect EF-5 & 6 backdraft dampers for proper operation as follows:

6.6.3.1 Cycle EF-5/6 backdraft dampers open and closed via the counterweight arm. Verify they operate freely. Observe marking on shaft indicating damper position. Verify marking indicates closed when exhaust fans are off.

6.6.4 Grease EF-5 and EF-6 blower bearings as follows:

6.6.4.1 Locate grease fitting and wipe clean.

6.6.4.2 Apply grease (Item 4.6) to fitting. Rotate the fan shaft while slowly operating manual grease gun. Add grease until clean grease emerges from the bearing.

6.6.4.3 Wipe excess grease from the zerk fitting and bearing.

6.6.4.4 Record “Date” each fan is greased and “Hours Run” in the EF-5/6 Fan Greasing

Chart at the end of this section.

Attachment 6.6

6.6 SEMI-ANNUAL PREVENTIVE MAINTENANCE: (Continued)

6.6.5 Inspect AHU-2 condensate collection pan for cleanliness as follows:

6.6.5.1 Inspect the evaporator drain pan for cleanliness and microbial growth.

NOTES: (1) Gloves, overalls, and a HEPA filtered dust mask are required PPE.

(2) If the evaporator pan is clean, N/A the remaining steps in 6.6.5.

6.6.5.2 Use a scraper to remove any solid material. Use a HEPA filtered vacuum (Non-

Radiological) to remove loose material.

6.6.5.3 If required and no microbial growth has been removed, clean drain pans using detergent (Items 4.7 and 4.8). This step may be performed in conjunction with coil cleaning step Error! Reference source not found.. Follow detergent manufacturer instructions for applying cleaning solution.

6.6.5.4 If microbial growth has been detected then pan is to be cleaned with a mild bleach and water solution or an EPA approved sanitizer. Thoroughly rinse the drain pan.

6.6.5.5 Allow the unit to dry thoroughly before putting the system back in service.

6.6.6 Inspect/clean AHU-2 hot water, chilled water and hot water reheat coils as follows:

6.6.6.1 Command (via DDC system) the 3-way valves for the hot water, chilled water and reheat valves to flow 100% through the coil. Inspect coils for leaks.

NOTE: Depending when inspection is performed (heating or cooling season), pumps may have to be commanded on or false inputs may have to be entered into the DDC system to perform test. Contact Nuclear Engineering if problems performing inspection are encountered.

CAUTION: The hot water coils may be hot.

6.6.6.2 Command the 3-way valves to full bypass. Wait for coils to cool before proceeding.

6.6.6.2.1 Inspect the coils for any accumulation of dirt. Vacuum hot water reheat coil if necessary.

NOTE: If dirt accumulation is not present, N/A steps 6.6.6.2.2 through 6.6.6.2.5.

Attachment 6.6

6.6 SEMI-ANNUAL PREVENTIVE MAINTENANCE: (Continued)

6.6.6.2.2 Clean air handler hot water and chilled water coils with water/detergent solution using items 4.7 and 4.8, if necessary. Clean drain pan when cleaning coils. Follow detergent manufacturer instructions for applying cleaning solution.

NOTE: A wet vacuum or absorbents may be required when cleaning hot water coil. The access compartment on AHU-2 upstream of coil does not have a drain.

6.6.6.2.3 Rinse coils completely after cleaning.

6.6.6.2.4 Comb fins completely after rinsing.

6.6.6.2.5 Allow the unit to dry thoroughly before putting the system back in service.

6.6.6.3 Put 3-way valves or any other components manipulated via DDC back to auto control.

6.6.7 Inspect AHU-2 and EF-5/6 isolators and fasteners as follows:

6.6.7.1 Inspect nuts, bolts, washers and springs for tightness and deterioration.

6.6.7.2 Notify Nuclear Engineering if any fasteners or springs are loose, missing or deteriorated.

6.6.8 If other preventative maintenance must be performed, mark this step N/A and proceed to the applicable section. If no other maintenance activities are to be performed, restart the ventilation system from the “MANUAL OVERRIDE PANEL”, IAW Section 5.2, Normal Operation.

Attachment 6.6

6.6 SEMI-ANNUAL PREVENTIVE MAINTENANCE: (Continued)

EF-5/6 FAN GREASING CHART

Fan Greased

Date Hours Run

Operations Initials

Fan

Greased Date

Hours Run

Operations Initials

Attachment 6.6

SEMI-ANNUAL PREVENTATIVE MAINTENANCE

MP-200 Task Step Complete Date Complete Date

Ventilation System

Shutdown (Not MP-200

Task)

6.6.1

VS-M-S-1

6.6.2.1

6.6.2.2

EF-5

6.6.2.3

6.6.2.4

EF-6

6.6.2.3

6.6.2.4

VS-M-S-2

EF-5

6.6.3.1

EF-6

6.6.3.1

VS-M-S-3

EF-5

6.6.4.1

6.6.4.2

6.6.4.3

6.6.4.4

EF-6

6.6.4.1

6.6.4.2

6.6.4.3

6.6.4.4

Attachment 6.6

SEMI-ANNUAL PREVENTATIVE MAINTENANCE

MP-200 Task Step Complete Date Complete Date

VS-M-S-4

6.6.5.1

6.6.5.2

6.6.5.3

6.6.5.4

6.6.5.5

VS-M-S-5

6.6.6.1

6.6.6.2 6.6.6.2.1 6.6.6.2.2 6.6.6.2.3

6.6.6.2.4 6.6.6.2.5 6.6.6.3

VS-M-S-6

AHU-2

6.6.7.1

EF-5

6.6.7.1

EF-6

6.6.7.1

6.6.7.2 Ventilation

System Re-Start (Not MP-200

Task)

6.6.8

Attachment 6.7

6.7 ANNUAL PREVENTIVE MAINTENANCE:

N/A for section 6.7.3.

(2) Monthly PMs do not need to be performed during the same shutdown. Mark sections and steps not performed as N/A and proceed to step 6.7.10.

6.7.1 Inspect exhaust fan (EF-5/6) flexible connections as follows:

6.7.1.1 Inspect EF-5/6 flexible connections (black canvas-like material) to ensure they are intact and not torn or crushed.

6.7.1.2 Perform a smoke check on the connectors for signs of leakage. Notify Nuclear

Engineering if leakage is detected.

6.7.2 Inspect EF-5/6 flexible connector thrust restraints to ensure all fasteners are in place and that spring tension is adjusted properly. The thrust restraints should prevent the flexible connectors from crushing during startup and operation.

6.7.3 Secure and lockout/tagout the ventilation system for all remaining Annual PM items IAW Section 5.3, Normal Shutdown.

6.7.4 Open AHU-2 access doors and visually inspect the door gaskets to ensure they are in place and not torn, cracked or noticeably damaged.

6.7.5 Inspect AHU-2 blower wheel for corrosion, cracks and evidence of rubbing the housing.

6.7.5.1 If necessary, remove the fan guard and vacuum and/or wipe lint, dust and grease from AHU-2 blower, housing and exterior surfaces of fan motor. Reinstall fan guard when complete (if removed).

NOTE: Do not adjust or remove any balancing weights on the blower wheel.

6.7.6 Inspect accessible flexible connections on AHU-2 (black canvas-like material) to ensure they are intact and not torn or crushed.

NOTE: Damage to ducting downstream of the fan at flex connector is an indication that the connector is crushing during fan startup.

6.7.7 Drain Flushing

6.7.7.1 Flush AHU-2 cooling coil drain with clean (tap) water and verify water drains properly into the floor drain.

Attachment 6.7

6.7 ANNUAL PREVENTIVE MAINTENANCE: (Continued)

6.7.7.2 Flush the casing drain in the “Mixing Section” of AHU-2 with clean (tap) water and verify water drains properly into the floor drain.

NOTE: If feasible, this PM should be performed prior to start of cooling season to ensure traps are full.

6.7.8 Check operation of AHU-2 outside air damper as follows:

6.7.8.1 Gain access to the outside air damper such that it can be observed during testing.

6.7.8.2 Command the damper to full open and full closed (via DDC) and observe operation.

6.7.8.3 Ensure damper operates properly.

NOTE: An alternate method to verify operation is to observe during normal startup and shutdown of ventilation system.

6.7.9 Inspect EF-5/6 blower wheels and exterior surfaces of fan motors as follows:

6.7.9.1 Remove access covers to EF-5/6 blowers.

6.7.9.2 Inspect EF-5/6 blower wheels for corrosion, cracks and evidence of rubbing the housing. If necessary, remove belt guards to rotate fans.

6.7.9.3 If necessary, vacuum and/or wipe lint, dust and grease from EF-5/6 blower wheels, housings and exterior surfaces of fan motors.

6.7.10 Restart the ventilation system from the “MANUAL OVERRIDE PANEL” IAW

Section 5.2, Normal Operation.

6.7.11 Perform smoke test to verify airflow in access point, personnel shower, chemistry lab, calibration room and equipment cleaning room as follows:

6.7.11.1 Locate the air transfer duct in the walls of the rooms to be tested. The CIF

Mechanical drawings identify the location of the ducts and design airflow direction.

6.7 ANNUAL PREVENTIVE MAINTENANCE: (Continued)

6.7.11.2 While standing on the higher pressure side of the wall, spray artificial smoke near the entrance of the transfer duct. Observe smoke flowing into the transfer duct into the lower pressure room. The door to the room shall be closed during test. The direction of airflow should be:

Access point to high bay High bay to chemistry lab High bay to personnel shower High bay to equipment cleaning room High bay to calibration room

If smoke does not flow into the calibration room, then contact Nuclear Engineering for direction. The “Shutoff Damper” located in the High bay may need to be shut to complete the test.

6.7 ANNUAL PREVENTIVE MAINTENANCE: (Continued)

ANNUAL PREVENTATIVE MAINTENANCE

MP-200 Task Step Complete Date

VS-M-A-8

6.7.1.1

6.7.1.2

VS-M-A-9 6.7.2

Ventilation System

Shutdown (Not MP-200 Task)

6.7.3

VS-M-A-2 6.7.4

VS-M-A-1

6.7.5

6.7.5.1

VS-M-A-15 6.7.6

VS-M-A-10

6.7.7.1

6.7.7.2

VS-M-A-3

6.7.8.1

6.7.8.2

6.7.8.3

VS-M-A-1

EF-5

6.7.9.1

6.7.9.2

6.7.9.3

EF-6

6.7.9.1

6.7.9.2

6.7.9.3 Ventilation System

Re-Start (Not MP-200 Task)

6.7.10

VS-M-A-11

6.7.11.1

6.7.11.2

Attachment 6.8

Comment Sheet

Nuclear Engineering Technical Work Document (TWD) This Comment Sheet is provided for anyone’s use in recording suggestions, improvements, difficulties, etc. encountered with the task or the TWD as written. It is also to be used by the Article 112 Engineer to record the change type code for pen and ink changes.

Instructions for pen and ink change codes: When multiple steps are impacted by one change, record all step numbers impacted by the change and provide a single change type code. Select the most appropriate code for the change.

Step No.(s)

Name Dept., Badge

Change / Comment To be filled out by Nuclear Engineering Requested by Dept.

Implement In

Next TWD Issue Change Type

Code

Yes No

T-Technical Direction Incorrect; R-Radiological Direction Incorrect; I-Informational; W-Work Scope Change; A-Administrative Change; P-In Process Change Version: 10/03/2012