* * * FOR ALL
TASK 72-31-47-100-801
1 . General.
A.This procedure gives instructions to clean the tube support ring (050AM). Refer to Figure 601
B.There are two configurations for the tube support ring (050AM). The different tube configurations can be identified by the difference of the coated area of the inner diameter. Refer to Figure 601.
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-99
Wet Abrasive Blasting - Aluminum Oxide 500 Grit
 
70-21-02
Vapor Degreasing
 
70-21-03
Steam Cleaning
 
70-21-04
Dry Abrasive Blast Cleaning
 
70-21-05
Wet Abrasive Blast Cleaning
 
70-21-06
Heavy-Duty Alkaline Cleaner (Without Inhibited Phosphoric Acid)
 
70-21-14
Manually-Assisted Detergent Cleaning
 
70-21-20
Four-Step Alkaline Cleaning And Acidic Descaling (With Inhibited Phosphoric Acid)
 
70-21-22
Light-Duty Aqueous Cleaning
D.Expendable Parts. None.
* * * FOR ALL
Figure 601   Tube Support Ring - Cleaning
3 . General Cleaning.
Subtask 72-31-47-110-001
A.Alternative Procedures Available. Vapor clean the tube support ring. Refer to TASK 70-21-02-110-002 (70-21-02 CLEANING METHOD NO. 2 - VAPOR DEGREASING)
Subtask 72-31-47-160-001
A.A.Alternative Procedure. Steam clean the tube support ring. Refer to TASK 70-21-03-160-001 (70-21-03 CLEANING METHOD NO. 3 - STEAM CLEANING).
Subtask 72-31-47-120-001
A.B.Alternative Procedure. Abrasive blast clean the tube support ring. Refer to TASK 70-21-04-120-C01 (70-21-04 DRY ABRASIVE BLAST PROCEDURE - METHOD NO. 4C).
Subtask 72-31-47-110-002
A.C.Alternative Procedure. Alkaline clean the tube support ring. Refer to TASK 70-21-06-110-004 (70-21-06 CLEANING METHOD NO. 6 - HEAVY-DUTY ALKALINE CLEANER (WITHOUT INHIBITED PHOSPHORIC ACID)).
Subtask 72-31-47-110-003
A.D.Alternative Procedure. Manually clean the tube support ring. Refer to TASK 70-21-14-110-012 (70-21-14 CLEANING METHOD NO. 14 - MANUALLY-ASSISTED DETERGENT CLEANING).
Subtask 72-31-47-110-004
A.E.Alternative Procedure. Light-duty aqueous clean the tube support ring. Refer to TASK 70-21-22-110-042 (70-21-22 CLEANING METHOD NO. 22 - LIGHT-DUTY AQUEOUS CLEANING - METHOD 1).
Subtask 72-31-47-110-009
A.F.Alternative Procedure. Four-step alkaline clean the tube support ring. Refer to TASK 70-21-20-110-038 (CLEANING METHOD 20 - FOUR-STEP ALKALINE CLEANING AND ACIDIC DESCALING (WITH INHIBITED PHOSPHORIC ACID)).
Subtask 72-31-47-120-003
A.G.Alternative Procedure. Wet abrasive blast clean the tube support ring with 500 grit aluminum oxide. Refer to TASK 70-21-05-120-B02 (WET ABRASIVE BLAST CLEANING METHOD 5B) and TASK 70-00-99-801-054 (S1054 - WET ABRASIVE BLASTING - ALUMINUM OXIDE 500 GRIT).