摘要:

This article describes procedures for maintaining high standards of water hauling sanitation. The importance of cleaning and inspecting tanks, pipes, hoses, valves, and fittings used in water hauling is stressed.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1980.tb00665.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Great quantities of chlorine are in use daily in water and wastewater plants throughout the world. It is vitally important that operators be prepared for emergency action should minor or major chlorine leaks or accidents occur.Chlorine can be fatal. A leak in which a concentration as small as 1000 mg/L, or 0.1 percent chlorine escapes into the air is likely to be fatal after just a few deep breaths.Therefore, any accidental uncontrolled release of chlorine gas must be treated as an emergency. Chlorine leaks never get better; in fact, they always get worse if they are not corrected promptly.The key to coping successfully with chlorine emergencies is to be prepared. Prompt response requires an emergency plan and clear‐cut instructions. Many chlorine consumers incorporate in their emergency plans provision for the use of Chlorine Institute emergency kits.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1980.tb00667.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

This portion of “Math for Operators” covers flow rate calculations. Definitions of velocity and flow rate are given, and the relationship between them is described. The continuity equation is covered as well.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1980.tb00668.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

This month's gimmick and gadget is a valve box aligner constructed of 2 1/4‐in. square stock welded to steel tubing, to which four spacers are attached. The aligner is placed over the valve wrench nut prior to installation of the valve box. After the trench has been backfilled, the aligner is removed easily from the box.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1980.tb00669.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

This article suggests a flushing program for the fall, and explains what crews should expect from two slugs of water—the “dead” water in the hydrant lead and the dirty water created by unusual velocities in the main.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1980.tb00671.x

出版商:Wiley    

年代:1980

数据来源: WILEY