RPM LD-260 Load Disconnect Replacement | FRONTLINE Maintenance Tool

Last Updated: 04/24/2025 1:43 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	06/20/2024 11:38 AM
Rapiscan VM-250 Vehicle Monitor	Device	Published	10/14/2024 9:50 AM
Rapiscan TM-850 Rail Monitor	Device	Published	09/18/2024 10:28 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
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
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
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
5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...	Annotation	Published	10/24/2022 8:35 AM
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 screw; 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
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
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
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
Note	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 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
LD-260 Disconnect Switch Power Off	Image	Published	04/24/2023 12:49 PM
LD-260 Disconnect Switch Connector Removal	Image	Published	04/24/2023 12:57 PM
LD-260 Disconnect Switch Screw Locations	Image	Published	04/24/2023 1:03 PM
LD-260 Disconnect Switch Connector Install	Image	Published	04/24/2023 1:19 PM
LD-260 Disconnect Switch Power On	Image	Published	05/04/2023 3:37 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

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

7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...

Use orange safety (traffic control) cones to setup barriers. Practice established safety protocols.

7269 - 7232 - Open RPM door; Remark:7234

Step 00

7234 - Open all doors needed to access components.

Open all doors needed to access components.

7270 - 7235 - Power off RPM; Remark:7236

Step 00

7236 - Move LD-260 switch to OFF position. The PWR ON

Move LD-260 switch to OFF position. The PWR ON LED will turn off.

Operation

Step 2

Main Step

7271 - 7237 - Uninstall Faulty LD-260; Remark:

Step 00

7237 - Uninstall Faulty LD-260

Uninstall Faulty LD-260

7272 - 7238 - Disconnect three (3) connectors; Remark:7239

5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...

Type

Note

It is good practice to verify all cables and connectors are labeled prior to disconnection.

Step 00

7238 - Disconnect three (3) connectors

Disconnect three (3) connectors

7239 - Needle nose pliers can be used to remove connectors.

Needle nose pliers can be used to remove connectors.

7273 - 7240 - Remove two (2) mounting screw; Remark:7241

Step 00

7240 - Remove two (2) mounting screws

Remove two (2) mounting screws

7241 - Use medium Phillips (PH2) screwdriver. Retain screws.

Use medium Phillips (PH2) screwdriver. Retain screws.

7274 - 7242 - Remove faulty LD-260; Remark:

Step 00

3397 - 3395 - Label faulty component; Remark:3396

Step 00

3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...

Use tag or tape. Include date of removal, description of failure symptoms, country, site, and lane number. Dispose per Nuclear Smuggling Detection and Deterrence (NSDD) guidance or contractual requirements.

Operation

Step 3

Main Step