1、vv-+s- c:,- m 3535789 02b903b 289 m DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE WASHINGTON, DC 20332-5000 REPLY TO ATTN OF: LEEE SUBJECT: Engineering Technical Letter (ETL) 88-4 : Reliability and Maintainability (R it is a tool to aid the planner, designer, and maintainer to foc
2、us on materials, methods, and system compo- nents to enhance Reliability and Maintainability throughout the life of each facility. b. The submittal of “lessons learned“ from the users, crafts- men, technicians, designers, construction managers, and MAJCOM staffers is highly encouraged. This provides
3、 a means for continual improvement and refinement, thereby increasing the future value and usefulness of the checklist. Attachment 2 is a sample formatltear- out sheet for submittal of “lessons learned.“ It may not be possi- ble to furnish all information requested in paragraph la. This in- formatio
4、n, while useful, is not essential. The information request- ed in paragraph 2 is essential if clarification or additional infor- mation is needed. Handwritten forms and freehand sketches are ac- ceptable. 5. The action officer for this ETL is Mr. Julian L. Ius, AFESC/DEMM, AUTOVON 523-6236. FOR THE
5、CHIEF OF STAFF CHARLES A SIPPIAL, COL, USAF Chief, Engineering Division Directorate of Engineering however, where design conditions justify O or require such use, specify only solid-core wood O doors when canopy protection is provided. O For toilet, laundry, and shower areas over occupied spaces, do
6、es design provide for a three- O ply membrane waterproofing? Are metal pans O specified under shower areas located on floors other than on grade? O Is an access ladder/stairway provided in the design O for servicing of roof-mounted equipment? O Are the specified floor finishes appropriate for O thei
7、r intended use (ceramic tile, terrazzo, carpeting, etc)? Are high-quality, low- O maintenance materials specified? O Are interior wall finishes/wainscot materials O durable, low maintenance type (such as a fabric wall covering vice paint)? O Exterior finishes - specify improved finishes to O provide
8、 a longer cycle between recoatings. O Are thermal-pane windows in aluminum casing with O baked on finishes specified for low maintenance and O energy efficiency when justified by life-cycle cost? Are exposed concrete floors to receive a hardener o and sealer? Do not paint exposed concrete floors. O
9、Consider the use of pitched roofs vice low-slope O roofs, where possible. O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
10、O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0357 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- D 3515789 02b904b I128 D O ALL PURPOSE CHECKLIST O PAGE 7
11、OF 72 PAGES O O TITLE/SUBJECT/ACTIVITY/FUNCTIONAL AREA O OPR O DATE O O O O O O RELIABILITY AND MAINTAINABILITY CHECKLIST O DEMM O APR 88 O O O I TEM O O O O O O Draw a horizontal line between each major O O O O O O paragraph.) O YES O NO O N/A O O NO. O (Assign a paragraph number to each item. O O
12、O O O O O O 23. O O O O O 24. O O O 25. O O O 26. O O O 27. O O O 28. O O O 29. O O O OB. O O O O O O O O O O O O 1. 2. SECTION 2. ARCHITECTURAL (CONTINUED) O O O O Are exterior doors for arctic bases heavy duty industrial type with maximum weather seal, and have O vestibules been provided for all e
13、xterior entrance O doors? Are drinking fountains and fire extinguisher cabinets recessed in hallways to prevent damage? Does the interior and exterior painting schedule O conform to the approved Base Master Color Plan? Flag poles specified to be of low-maintenance aluminum in lieu of painted steel?
14、Are effective expansion joints clearly detailed for O roofs, floors, and walls at required intervals? In corridors, are bumper rails or hard surface wainscoting specified in heavy traffic areas? Does the design compliment adjacent facilities and O is it in accordance with the Base Architectural Comp
15、atability plan? O LIST ANY ADDITIONAL LOCALLY UNIQUE R e.g., dishwashing and potwashing rooms? O 14. O Is alternate feed to facility required to provide O O increased reliability? Facilities such as hospitals“ O or mission-essential facilities may benefit greatly O O from dual feeders. O O O O O O O
16、 O O O O O O O O O O O O O O O O O O O O O O O O O 15. O Is spare stub-up provided at padmounted trans- O O O O O O O O O O O O O O formers? 16. O Circuit breakers used in lieu of fuses? Use of O O O O O O O O O O O circuit breakers increases R e.g., heat O O O O shrink and resin casting, etc? O O O
17、 O O O O O O D. O SUBSTATIONS O O O O O O O O O 1. O Adequate bypass capability at substations so O O O O O O breaker can be serviced? O O O O O O O O O O O O O O 2. O Are substations located away from base perimeter O O fences and away from heavy traffic roads? Access o O roads to substations able
18、to accommodate line O maintenance vehicle? O O O O O O O O O O O O O O O O 3. O Do substations have the following features? O O O O O O O O O O O O a. Two sets of multi-ratio CTs, one each for in- O O O O O struments and one each for relays. O O O O O O O O O O b. Low maintenance breakers such as va
19、cuum or O O O O O SF6C: or air. O O O O O O O O O O c. That any special maintenance tools are in- O O O O O O cluded as part of facility. O O O O O O d. Two power transformers, each capable of carry- O O O O O O ing the load, should be considered for O O O O O O reliability and ease of maintenance.
20、O O O O O O e. Permanent schematics are specified to be left O O O O O O at the substation. O O O O O O O O O O O O O O O O O O O O O O O E. O AIRFIELD LIGHTING O O O O O O O O O O 1. O Is airfield lighting vault designed with 480v O overhead bus duct distribution system and O O O O O O O O devices/
21、equipment to facilitate removal and re- O O O O O placement of regulators, such as an overhead crane?O O O O 2. O Was heat loading of airfield lighting vaults con- O O O O O O O O O O sidered? May need to be air conditioned. O O O O O O O O O 3. O Does airfield lighting vault have adequate work O O
22、O O O space, storage area, and a latrine? O O O O O O O O O O O O O O O O O O O O O O 4. O Are isolation transformers installed in cans, not O O O O O O direct buried? Consider installing transformers O O O O O O during runway use. O O O O O O 50 from runway edge to allow maintenance work O O O O 03
23、68 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rn 3535787 ozbqo57 TOI m O ALL PURPOSE CHECKLIST O PAGE 17 OF 72 PAGES O O TITLE/SUBJECT/ACTIVITY/FUNCTIONAL AREA O OPR O DATE O o O O O O RELIABILITY AND MAINTAINABILITY CHECKLIST O DEMM O APR 88 o
24、O O I TEM O O O O O NO. O (Assign a paragraph number to each item. O O O O O O Draw a horizontal line between each major O O O O O O paragraph.) o YES O NO o N/A O O O SECTION 4. EXTERIOR ELECTRICAL (CONTINUED) O O O O O O O O O O O O O O O O o F. O LIST ANY ADDITONAL LOCALLY UNIQUE R&M DESIGN O O O
25、 O O O O O O O O O FEATURES TO BE CONSIDERED: O O O O O 1. O O 2. O O O O O O O O O o O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
26、O O O O O O O O O O O O O O O O O O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0369 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 3515789 0269058 94T M PAGE 1
27、8 OF 72 PAGES O O ITEM O O O O NO. O (Assign a paragraph number to each item. O O O O o O Draw a horizontal line between each major O O O O O O paragraph. ) O YES O NO O N/A O u O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
28、O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O o O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
29、O O O O O O O O O O O O O o O a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3535787 02b05 8b O ALL PURPOSE CHECKLIST O PAGE 19 OF 72 PAGES O TITLE/SUBJECT/ACTIVITY/FUNCTIONAL AREA O OPR O DATE O O O O O O RELIABILITY AND MAINTAINABILITY CHECKLIST
30、 O DEMM O APR 88 O O O ITEM O O O O O NO. o (Assign a paragraph number to each item. O O Draw a horizontal line between each major O O O O O O paragraph.) O YES O NO o NIA O O O O O O O O O O O O O A. O O O O O O O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 0371 O
31、1. O O O 2.O O O 3. O O O 4. O O O 5. O O O 6. O O O 7. O O O 8. O O O 9. O O O 10. O O O 11. O O O 12.O O O 13. O O O 14. O 15. O O O O 16. O O SECTION 5. EXTERIOR STRUCTURAL SYSTEMS GENERAL - check: Materials suitable for the environment in which they are to be used? Components accessible for peri
32、odic inspection and/or maintenance? Does the structural design specified provide the lowest possible maintenance effort? Roof drains properly designed to avoid water damage to structural system? Are expansion and control joints properly located to accommodate building movement? Joint sealant properl
33、y selected to provide a long-term maintenance-free joint? Crawllattic spaces properly ventilated to prevent moisture damage? Maintenance of structural system within local cap- ability? Maintenance requirements identified in the plans and/or specifications? Is waterproof grout/mortar specified for we
34、t area tile installation? Are masonry and concrete surfaces specified to be sealed to prevent efflorescence and leaching? Ventilation properly designed and functional to prevent moisture accumulation? Vapor/moisture barriers included in the design where needed? Doors/windows designed and sealed corr
35、ectly? Any potential settlement problems? Does design consider possible settlement? Does the design provide for protective coatings that have been proven satisfactory for their O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
36、 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Provided by IHS
37、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-O O intended use? W 3515789 O269060 5T W o O O O a O372 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3535789 02bObL 434 PAGE 20 OF 72 PAGES o NO. O (Assign a paragr
38、aph number to each item. O O O O O O paragraph. ) O YES NO O NIA O O O O O O O ITEM O O Draw a horizontal line between each major O O O O O B. O LIST ANY ADDITIONAL LOCALLY UNIQUE R&M DESIGN O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
39、 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O
40、 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O o FEATURES TO BE CONSIDERED: 1. 2. O u373 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3515789 02b90b2 370 = O ALL PURPOSE CHE
41、CKLIST O PAGE 21 OF 72 PAGES o O TITLE/SUBJECT/ACTIVITY/FUNCTIONAL AREA O OPR O DATE O O O O O O RELIABILITY AND MAINTAINABILITY CHECKLIST O DEMM o APR 88 O O O ITEM O O O O O NO. O (Assign a paragraph number to each item. O O Draw a horizontal line between each major O O O O O O paragraph.) O YES O NO O N/A O O O O O O O O O O O O O A. O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 1. O O O O O O 2.O O O O 3. O O O 4. O O O 5. O
