摘要:

Both water utility employees and customers should be educated about cross connections, their causes, and prevention. Establishment of a cross connection control program should include a purpose or general policy statement, related definitions, ordinance requirements, specific system requirements, and violations and penalties. Other integral program steps are system assessment, field inspection, device testers, accident procedures, and public relations activities.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1984.tb00151.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

There are two types of equipment maintenance, preventive maintenance and breakdown maintenance. This article outlines five basic features of a sound maintenance policy. Responsibility for maintenance must be clearly defined and assigned to competent personnel. Management must state clearly its maintenance objectives. Proper tools, spare parts, test instruments, and maintenance facilities must be provided. Preventive action must be planned for and scheduled. An adequate system of written records and reports, including preventive maintenance forms, unscheduled maintenance reports, and property and calendar maintenance directories, must be used to control the program.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1984.tb00152.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

This invention is an oversized version of the tool used to grab small auto parts that are dropped into places where they cannot be reached. Steel jaws fit around a rock, and when they are tightened the rock is lifted easily.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1984.tb00153.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

The list provided here includes American Water Works Standards in effect on December 31, 1983 or withdrawn since 1979. Standards with American National Standards Institute approval are indicated.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1984.tb00150.x

出版商:Wiley    

年代:1984

数据来源: WILEY