RPM LD-260 Load Disconnect Replacement | FRONTLINE Maintenance Tool

Last Updated: 06/18/2025 1:41 AM

The following table lists all the components that make up the document.

Title	Type	Status	Last Updated
Rapiscan PM-700 Pedestrian Monitor	Device	Published	06/05/2025 11:30 AM
Rapiscan VM-250 Vehicle Monitor	Device	Published	06/05/2025 11:26 AM
Rapiscan TM-850 Rail Monitor	Device	Published	06/05/2025 11:31 AM
7264 - 1401 - Establish Initial Conditions; Remark:	Procedure Step	Published	04/27/2023 7:00 PM
1401 - Establish Initial Conditions	Instruction	Published	09/30/2022 3:14 PM
7622 - 7592 - Inform system operators; Remark:11335	Procedure Step	Published	04/20/2025 10:15 AM
7592 - Inform system operators	Instruction	Published	06/29/2023 3:20 PM
11335 - Upon arrival, brief system operators on expected work, duration, anticipated ...	Remark	Published	04/20/2025 10:14 AM
7268 - 7231 - Close lane; Remark:7233	Procedure Step	Published	04/27/2023 7:01 PM
9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...	Annotation	Published	09/27/2023 9:09 AM
7231 - Close lane	Instruction	Published	04/18/2023 1:00 PM
7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...	Remark	Published	04/24/2023 12:18 PM
7269 - 7232 - Open RPM door; Remark:7234	Procedure Step	Published	04/27/2023 7:02 PM
7232 - Open RPM door	Instruction	Published	04/18/2023 1:02 PM
7234 - Open all doors needed to access components.	Remark	Published	04/19/2025 7:48 PM
7755 - 7679 - Disconnect Ethernet; Remark:11336	Procedure Step	Published	04/20/2025 11:18 AM
7680 - Caution : Make sure to press release button on back of Ethernet cable before removing.	Annotation	Published	07/01/2023 11:54 PM
7679 - Disconnect Ethernet	Instruction	Published	05/16/2025 8:03 PM
11336 - Locate Ethernet connector on top of SC-770 controller. Press release button o...	Remark	Published	04/20/2025 11:21 AM
7270 - 7235 - Power off RPM; Remark:7236	Procedure Step	Published	09/01/2023 7:57 PM
7235 - Power off RPM	Instruction	Published	04/24/2023 12:30 PM
7236 - Move LD-260 switch to OFF position. The PWR ON	Remark	Published	04/27/2023 4:25 PM
7454 - 7290 - Disable tamper switches; Remark:7416	Procedure Step	Published	06/02/2023 5:25 PM
7290 - Disable tamper switches	Instruction	Published	05/01/2023 8:14 AM
7416 - Use a magnet to disable tamper switches for all open doors. Use adhesive tape...	Remark	Published	06/02/2023 1:18 PM
8561 - 7291 - Disable both infrared occupancy sensors; Remark:8514	Procedure Step	Published	09/18/2023 12:05 AM
5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...	Annotation	Published	10/24/2022 8:35 AM
7291 - Disable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:15 AM
8514 - Verify sensors mounted in control pillar door are receivers.	Remark	Published	09/29/2023 11:52 AM
9205 - To disconnect sensor cable, turn collar counterclockwise and pull away from s...	Remark	Published	09/29/2023 11:52 AM
7271 - 7237 - Uninstall Faulty LD-260; Remark:	Procedure Step	Published	04/27/2023 7:05 PM
7237 - Uninstall Faulty LD-260	Instruction	Published	04/24/2023 1:09 PM
7272 - 7238 - Disconnect three (3) connectors; Remark:7239	Procedure Step	Published	04/27/2023 7:06 PM
7238 - Disconnect three (3) connectors	Instruction	Published	04/24/2023 12:38 PM
7239 - Needle nose pliers can be used to remove connectors.	Remark	Published	05/10/2023 3:08 PM
7273 - 7240 - Remove two (2) mounting screws; Remark:7241	Procedure Step	Published	04/27/2023 4:09 PM
7240 - Remove two (2) mounting screws	Instruction	Published	04/05/2025 2:39 PM
7241 - Use medium Phillips (PH2) screwdriver. Retain screws.	Remark	Published	05/10/2023 3:09 PM
7274 - 7242 - Remove faulty LD-260; Remark:	Procedure Step	Published	04/27/2023 4:09 PM
7242 - Remove faulty LD-260	Instruction	Published	05/10/2023 3:10 PM
3397 - 3395 - Label faulty component; Remark:3396	Procedure Step	Published	07/21/2024 6:59 AM
3395 - Label faulty component	Instruction	Published	08/07/2021 11:07 AM
3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...	Remark	Published	08/09/2021 11:35 AM
7276 - 7245 - Install New LD-260; Remark:	Procedure Step	Published	04/27/2023 4:11 PM
7245 - Install New LD-260	Instruction	Published	05/10/2023 3:11 PM
7277 - 7246 - Mount new LD-260; Remark:7247	Procedure Step	Published	04/27/2023 7:07 PM
7246 - Mount new LD-260	Instruction	Published	05/10/2023 3:12 PM
7247 - Use retained screws. Use medium Phillips (PH2) screwdriver.	Remark	Published	05/10/2023 3:12 PM
7278 - 7248 - Reconnect three (3) connectors; Remark:7411	Procedure Step	Published	05/08/2023 8:31 AM
7263 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	04/24/2023 2:32 PM
7248 - Reconnect three (3) connectors	Instruction	Published	05/10/2023 3:13 PM
7411 - Reconnect three (3) connectors	Remark	Published	05/08/2023 8:30 AM
7279 - 7249 - Return equipment to normal operating condition; Remark:	Procedure Step	Published	04/27/2023 4:13 PM
7249 - Return equipment to normal operating condition	Instruction	Published	04/08/2025 3:22 PM
7280 - 7250 - Power on RPM; Remark:7251	Procedure Step	Published	04/27/2023 4:14 PM
7250 - Power on RPM	Instruction	Published	05/01/2023 8:31 AM
7251 - Move LD-260 switch to ON position. The LED PWR ON	Remark	Published	05/10/2023 3:14 PM
7281 - 7252 - Verify RPM start-up; Remark:7253	Procedure Step	Published	04/20/2025 3:26 PM
7252 - Verify RPM start-up	Instruction	Published	04/27/2023 2:23 PM
7253 - RPM will perform a power on self-test (POST) and collect a background radiati...	Remark	Published	05/10/2023 3:14 PM
8587 - 7305 - Enable both infrared occupancy sensors; Remark:8559	Procedure Step	Published	09/17/2023 11:03 PM
5553 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	10/28/2022 2:19 PM
7305 - Enable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:33 AM
8559 - To reconnect sensor cable, align connectors, push towards sensor, and turn co...	Remark	Published	09/29/2023 12:05 PM
7474 - 7310 - Enable tamper switches; Remark:7451	Procedure Step	Published	06/02/2023 5:41 PM
7310 - Enable tamper switches	Instruction	Published	05/01/2023 8:36 AM
7451 - Remove magnets and/or adhesive tape from door tamper switches.	Remark	Published	04/13/2025 5:46 PM
7282 - 7254 - Confirm network connection; Remark:7255	Procedure Step	Published	04/27/2023 4:15 PM
7254 - Confirm network connection	Instruction	Published	04/27/2023 2:22 PM
7255 - Contact operators to confirm communications have been reestablished between RPM ...	Remark	Published	05/10/2023 3:15 PM
9385 - 319 - Perform operational test; Remark:9347	Procedure Step	Published	06/16/2025 5:15 PM
319 - Perform operational test	Instruction	Published	06/10/2021 8:31 PM
9347 - DET-RPM-RAP-RM03 RPM Operational Test.	Remark	Published	10/03/2023 12:11 PM
7283 - 7256 - Close and lock all RPM doors; Remark:	Procedure Step	Published	09/01/2023 11:45 PM
7256 - Close and lock all RPM doors	Instruction	Published	04/27/2023 2:21 PM
8260 - 8250 - Reopen Lane; Remark:8249	Procedure Step	Published	09/07/2023 3:09 PM
8250 - Reopen Lane	Instruction	Published	09/07/2023 3:09 PM
8249 - Remove orange safety (traffic control) cones	Remark	Published	09/07/2023 3:09 PM
7842 - 7820 - Inform system operators upon completion of maintenance action; Remark:	Procedure Step	Published	07/07/2023 11:15 PM
7820 - Inform system operators upon completion of maintenance action	Instruction	Published	07/07/2023 10:02 PM
322 - 321 - Document maintenance actions; Remark:	Procedure Step	Published	06/17/2021 9:49 AM
321 - Document maintenance actions	Instruction	Published	04/21/2025 11:19 AM
2869 - 2585 - Document maintenance performed; Remark:2866	Procedure Step	Published	06/18/2021 5:58 PM
2585 - Document maintenance performed	Instruction	Published	07/09/2021 12:15 PM
2866 - Record observations, times, and results for the maintenance report.	Remark	Published	04/21/2025 11:39 AM
4706 - 4705 - Submit report; Remark:4864	Procedure Step	Published	06/29/2022 9:50 AM
4705 - Submit report	Instruction	Published	06/29/2022 9:50 AM
4864 - As specified by management or contractual obligations.	Remark	Published	07/28/2022 1:36 PM
Corrective Maintenance Procedure	Document Type	Published	03/02/2020 3:32 PM
Instrument is not functioning correctly	Frequency	Published	12/19/2022 5:52 PM
Warning	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 PM
Note	Annotation Type	Published	03/02/2020 3:25 PM
Technician 2	Skill Level	Published	04/09/2020 1:17 AM
Keys to access RPM	Replacement Parts	Published	04/27/2023 6:56 PM
Medium Phillips (PH2) screwdriver	Tools	Published	04/24/2020 4:40 PM
Needle nose pliers	Tools	Published	05/06/2020 4:10 PM
Orange/yellow safety vest	Replacement Parts	Published	04/27/2023 6:56 PM
Safety shoes	Replacement Parts	Published	04/27/2023 6:56 PM
Gloves	Replacement Parts	Published	05/10/2023 3:28 PM
Protective headwear: glasses, hard hat	Replacement Parts	Published	05/10/2023 3:31 PM
Orange traffic cones	Replacement Parts	Published	04/27/2023 6:56 PM
Disconnect Ethernet cable on top of SC-770 box	រូបភាព	Published	10/04/2023 2:59 PM
LD-260 Disconnect Switch Power Off	រូបភាព	Published	04/24/2023 12:49 PM
Disable tamper switch	រូបភាព	Published	09/07/2023 8:22 PM
Disable Tamper Switch	រូបភាព	Published	06/02/2023 2:28 PM
Infrared Receiver	រូបភាព	Published	09/17/2023 7:09 PM
Infrared Receiver DC	រូបភាព	Published	09/29/2023 11:47 AM
Infrared Disconnect Sensor Cable	រូបភាព	Published	09/17/2023 7:11 PM
Infrared Sensor Disconnect	រូបភាព	Published	09/17/2023 7:12 PM
LD-260 Disconnect Switch Connector Removal	រូបភាព	Published	04/24/2023 12:57 PM
LD-260 Disconnect Switch Screw Locations	រូបភាព	Published	04/24/2023 1:03 PM
LD-260 Disconnect Switch Connector Install	រូបភាព	Published	04/24/2023 1:19 PM
LD-260 Disconnect Switch Power On	រូបភាព	Published	06/04/2025 1:28 PM
Infrared Connection	រូបភាព	Published	09/29/2023 12:02 PM
Infrared Cable Installation	រូបភាព	Published	09/17/2023 10:12 PM
Infrared Sensor Cable	រូបភាព	Published	09/17/2023 10:13 PM
Remove Magnet from Tamper.PNG	រូបភាព	Published	09/28/2023 9:37 AM
Remove Magnet on Tamper Switch	រូបភាព	Published	06/02/2023 4:31 PM

DET-RPM-RAP-CM06

Replace the LD-260 load disconnect on the radiation portal monitor (RPM).

Equipment Hierarchy

Rapiscan PM-700 Pedestrian Monitor

Rapiscan VM-250 Vehicle Monitor

Rapiscan TM-850 Rail Monitor

Frequency

Instrument is not functioning correctly

Technician Level

Technician 2

x 1

Duration

Length of time

Tools Required

Keys to access RPM

Medium Phillips (PH2) screwdriver

Needle nose pliers

Orange/yellow safety vest

Safety shoes

Gloves

Protective headwear: glasses, hard hat

Orange traffic cones

Materials Required

LD-260 Load Disconnect (Rapiscan Part #8453B)

Originators

Craig Stinson

David Alexander

Brian Tucker

Originating Organization

ORNL; PNNL

Approver

Cody Hostick

Safety Concerns

Traffic

Final Documentation

Corrective Maintenance Report

Departmental Coordination

Prior to arrival, notify operators concerning expected work, duration, and anticipated alarms and fault indications.

Date of Origin

2021-07-01

Version

0.00

Preparation

Step 1

Main Step

7264 - 1401 - Establish Initial Conditions; Remark:

Step 00

1401 - Establish Initial Conditions

Establish Initial Conditions

7622 - 7592 - Inform system operators; Remark:11335

Step 00

7592 - Inform system operators

Inform system operators

11335 - Upon arrival, brief system operators on expected work, duration, anticipated ...

Upon arrival, brief system operators on expected work, duration, anticipated alarms, and fault indications before starting work.

7268 - 7231 - Close lane; Remark:7233

9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...

Type

Warning

Traffic should temporarily be rerouted or halted during conduction of this procedure to ensure maintenance provider safety and to prevent unscreened vehicles from passing.

Step 00