船舶系统ISE咨询号码。001-81船上污水收集，持有和转移的高压水喷射清洁（水力卷），持有和转移（CHT）系统管道Philsses费城PA MSG 292133Z 1月81日参考：A. CNO华盛顿，直流222221Z 1月81日（NOTAL）L.在响应At-Liantic Fleet HM＆E会议上的议程项目污水处理8-80时，Navsses船舶系统ISE咨询1-80的文本是重置的：“1.对我们海军船舶的小便池和水壁橱排出管道堵塞是一个经常性的维护问题，最近通过安装污水收集，持有和转移（CHT）系统来突出。优化污水持有时间需要间歇冲洗，具有相对低的盐水。CHT系统操作经验表明化学规模（碳酸钙）从盐水混合物中沉淀出来的土壤排水管和主电源的内表面。因此，在尿壶和水壁橱中的土壤中汲取的问题是更普遍的：然而，它不限于这些排水沟。不羁的收藏在延长时期的CHT系统管道中的这种化学尺度会导致严重的堵塞。土壤横断面区域的损失高达75％在排水期中报道了4“。这种规模的积累在许多情况下在两到三年的时间内发生。2.在利用柱塞，管道蛇，消灭软管软管等中清除这些管道系统中堵塞的常规方法已经证明是无效的，并且仅提供临时校正。用酸如氨基酸或机械清洁用诸如“罗托托诺尔”的装置的清洗并未经济高效或有效。 3. AT THE PRESENT TIME THE MOST COST-EFFECTIVE AND EFFICIENT MEANS OF REMOVING SCALE BUILDUP FROM THE CHT PIPING SYSTEM IS USING A, 10,000 PSI, 20GPM WATER JET PROCEDURE (HYDROBLAST) SIMILAR TO THAT EM- PLOYED TO CLEAN BOILER TUBES. THIS METHOD HAS BEEN DEVELOPED OVER THE PAST TWO YEARS BY NAVSSES AND HAS BEEN USED TO EFFECTIVELY CLEAN THE CHT PIPING SYSTEMS IN USS RALEIGH (LPD-1), USS JOSEPHUS DANIELS (CG-27), USS VIRGINIA (CGN-38), USS SOUTH CAROLINA (CGN-37), USS SURIBACHI (AE-21), USS FAIRFAX COUNTY (LST-1193) AND USS WICHITA (AOR-1). THE SYSTEMS IN THESE SHIPS WERE CLEANED BY SIMAS AND BY CONTRACTOR PERSONNEL UNDER THE TECHNICAL GUIDANCE OF NAVSSES. OTHER SHIPS ARE CURRENTLY IN PROCESS OF HAVING THE CHT SYSTEM CLEANED BY THIS METHOD WITH THE WORK BEING ACCOMPLISHED BY SHIP'S FORCE OR SHIP- YARD PERSONNEL UNDER THE SUPERVISION OF NAVSSES. 4. THE PREREQUISITE TO SATISFACTORY, COST-EFFECTIVE HYDROBLAST CLEANING OF THE CHT SYSTEM PIPING IS ADEQUATE PLANNING. THE PLAN- NING INCLUDES A SHIPCHECK TO TRACE OUT THE SOIL DRAIN SYSTEM TO DETERMINE IF THE SYSTEM CONFIGURATION MEETS THE REQUIREMENTS FOR HYDROBLAST CLEANING. THE PLANNING SHIPCHECK INCLUDES RECOMMEN- DATIONS FOR PIPE FITTING REPLACEMENT, CLEANOUT INSTALLATION AND OTHER MODIFICATIONS AS REQUIRED TO FACILITATE THE HYDROBLAST CLEANING OPERATION. THE PLANNING PHASE MUST BE SCHEDULED FOR ACCOMPLISHMENT FAR ENOUGH IN ADVANCE OF THE SCHEDULED HYDRO- BLAST CLEANING TO ALLOW SUFFICIENT LEAD TIME FOR PROCUREMENT AND INSTALLATION OF FITTINGS AND CLEANOUTS AS REQUIRED. 5. PRESENT PLANS CALL FOR NAVSSES (FORMERLY NAVSEC PHILADELPHIA, PA) TO TRAIN AND CERTIFY SIMA, IMA AND CONTRACTOR PERSONNEL ON BOTH THE EAST AND WEST COAST TO ACCOMPLISH HYDROBLAST CLEANING OF CHT SYSTEM PIPING. PLANS ALSO INCLUDE NAVSEA/NAVSSES PROCUREMENT OF ADDITIONAL CHT HYDROBLAST EQUIPMENT FOR SIMA'S AND IMA'S. IN THE INTERIM HYDROBLAST CLEANING OF CHT SYSTEM PIPING WILL BE ACCOM- PLISHED UTILIZING THE WATER JET UNITS PROVIDED FOR CLEANING BOILER TUBES. 6. PENDING NAVSEA ESTABLISHMENT OF A HYDROBLAST CLEANING TRAIN- ING PROGRAM, ALL CHT SYSTEMS HYDROBLASTING IS TO BE ACCOMPLISHED UNDER THE DIRECTION OF NAVSSES CODE 031D. POINT OF CONTACT FOR TECHNICAL DIRECTION/GUIDANCE FOR HYDROBLAST-CLEANING CHT PIPING SYSTEMS IS MR. A GEYER, CODE 031D, A/V 443-4128/3058/3922, COMMERCIAL (215) 755-4128/3058/3922." 2. THE STATUS OF THE HYDROBLAST PROGRAM SINCE THE ISSUANCE OF ISE ADVISORY 1-80 IS AS FOLLOWS: THE USS MOUNT WHITNEY (LCC-20), USS DWIGHT D. EISENHOWER (CVN-69), USS ELLIOT (DD-967), USS GUAM (LPH-9), USS AMERICA (CV-66), USS BLAKELY (FF-1072), USS JULIUS A. FURER (FFG-6), AND USS CLAUDE V. RICKETTS (DDG-5) AND AN ADDITIONAL 15 SHIPS HAVE HAD THEIR CHT PIPING SYSTEM HYDROBLASTED BY SHIPYARD, SIMA, IMA AND SHIP'S FORCE PERSONNEL, ALL UNDER THE TECHNICAL GUIDANCE OF NAVSSES. IN ADDITION, BY REF A CNO RECENTLY DIRECTED COMNAVSEASYSCOM TO FUND BASIC ALTERATION CLASS DRAWINGS (BACD'S) NECESSARY TO SUPPORT THE PROGRAM AND TO ESTABLISH A PMS PROCEDURE FOR ACCOMPLISHMENT OF CHT PIPING SYSTEM HYDROBLAST CLEANING. THIS ADVISORY IS APPLICABLE TO THE FOLLOWING CLASSES OF SHIPS: AE-21, AOR-1 CG-26, CGN-36, CGN-38, LPD-1 AND LST-1179.
LPD-1