Boiler/Chiller Op AA

Washington D.C.
Oct 12, 2017
Jan 08, 2018
Full Time
Job Description
Job Title: Boiler/Chiller Op AA
Job ID: 170604 Location: MD - New Carrollton Rail Facil
Full/Part Time: Full-Time
Posting Open-Close 11/08/2017
- 01/07/2018
Union 689
Regular/Temporary: Regular Job Description

Shift: Various

Location: Various

Days off: Various

Posting/Position Details:

All WMATA posted job openings are available through 11:59 pm the night before the noted Close Date. To ensure successful submission of application applicants are encouraged to apply well before this cut-off.  The noted Close Date is the date on which the posting is automatically removed from the website as of 12:00am at which time submission of an application is no longer possible. (WMATA reserves the right to remove postings at any time without notice as business needs demand.)

Minimum Qualifications:

Graduation from high school or possession of a high school equivalency certificate and satisfactory completion of an acceptable vocational school and/or training program in basic heating, air conditioning repairs or related field.

Considerable knowledge of and have performed satisfactorily the duties of a Boiler/Chiller  Mechanic, or related field for a period of not less than (6) years.


Possession of a valid motor vehicle operator's license issued from jurisdiction of residence. 

Possession of a current Steam Engineer Class 3 license from the District of Columbia. Possession of a Third Grade Engineer's license from the State of Maryland is an asset. 

Possession of an EPA/CFC Certificate, Type I, II, III (Universal)

Medical Group:

Ability to satisfactorily complete the medical examination for this job. The employee must be able to perform the essential functions of this job either with or withou reasonable accommodations.

Ability to perform strenuous physical tasks including frequent lifting of objects weighing up to 50 lbs. and occasionally to 75 lbs.

Ability to distinguish basic colors for component, wiring, and safety identification.

Job Summary/Duties:

This is highly-skilled maintenance and operations work on HVAC Boiler/Chiller systems. The incumbent is responsible for the operation, inspection, maintenance and repair of hot water and low pressure steam boiler plants, large chilled water plants, centrifugal and reciprocating refrigeration and ventilation systems and associated equipment. Work will be performed in accordance with local codes, operations manuals and manufacturers' instructions. The work requires an understanding of maintenance procedures and practices, HVAC theory, and the materials/parts, tools, test equipment and operating systems associated with boiler/chiller systems.

Observes operation of boiler and chiller plant systems and associated equipment/ components to detect potential failures or identify causes of malfunctions. Observes operating instruments and charts to determine optimum operation efficiency relative to demand. Inspects equipment for changes in calibration, dimensional requirements and manufacturers' specifications.

Performs maintenance, troubleshooting tests and calibrates HVAC systems, subsystems and components using precision measuring equipment (i.e., multi meters, flow meters, pressure gauges, leak detectors, vacuum pumps, pneumatic control testers, air velocity indicators and other instruments and tools), as required. Operates special shop equipment (drills, grinders, fork trucks, hoists, cranes).

Removes, replaces, repairs defective or worn parts; lubricates, cleans and recharges equipment; conducts leak detection tests; maintains boiler/chiller plant service controls {i.e.,  temperature,  pressure,  solid  state  and  pneumatic};  solders/brazes  tubing  and piping; installs and replaces filters, metering devices and solenoids; and adjusts or calibrates pneumatic equipment to manufacturers' specifications, using  approved procedures and test equipment.

Replaces and installs pipe and check valves in water feed systems; strainer/water filters/piping, fittings and steam traps. Cleans boiler/chiller tubes, fire boxes and controls during off-season. Dismantles, inspects and replaces pumps, bearings, seals and other related parts.

Maintains HVAC electrical components (circuits, wiring,  starters,  relays and motors) and mechanical components (compressors, fire boxes, valves, pumps, condensers} by performing removals, replacements  and repairing defective or worn parts; cleans and lubricates components as needed. Calibrates and adjusts  electrical  control  devices such as thermostats,  humidistats, aquastats, modulating valves, relays and controllers.

Performs maintenance on chiller cooling towers, service fan motors and belts. Blows down and cleans cooling tower sumps, strainers, header, trees and nozzles.

Collects and tests samples of boiler/chiller plant systems to determine if proper levels of acidity, causticity and alkalinity are maintained in accordance with manufacturer guidelines and procedures. Treats water based on test results with tannin, phosphate, caustic soda or sodium sulfate for control of corrosion and scale formation as necessary.

Treats cooling tower water for bacteria. Collects samples for laboratory tests. Implements  approved  engineering  modifications  to  HVAC  systems  and  plants.

Performs new plant and component acceptance testing.

Completes required documentation and reports for the operation and maintenance of boiler/chiller equipment and related components by using the proper forms, logs, tags or automated database; prepares parts requisitions for the supervisor's approval.

Attends on-the-job and formal training classes; assists mechanics in higher classifications in their assignments or provides job specific training to mechanics in lower classifications.

Responds to and provides assistance in emergencies such as securing or safeguarding HVAC equipment or those related to fire/life/safety conditions. Provides assistance during severe weather/snow emergencies, etc.

Performs all tasks and assignments within established safety and maintenance guidelines.

May work from ladders, scaffolding and other high rise equipment. May operate Authority vehicles between work locations.

Works variable hours.

Performs related duties as required.

Employees are assigned complex Boiler/Chiller operation and maintenance work in WMA TA facilities. Employees are expected to carry assignments through completion independently. Existing rules, regulations and procedures govern the work but employees use considerable judgement in interpreting and applying them to unusual or nonstandard situations. Employees frequently refine and develop their work routines. Work is reviewed in general terms through spot checks and occasional checking of results by a Supervisor, Craft Crew.

Evaluation Criteria:

Consideration will be given to applicants whose resumes demonstrate the required education and experience. Applicants should include all relevant education and work experience.

Evaluation criteria may include one or more of the following:

  • Personal Interview
  • Skills Assessments
  • Verification of education and experience
  • Criminal Background Check
  • Credit history report for positions with fiduciary responsibilities
  • Successful completion of a medical examination including a drug and alcohol screening
  • Review of a current Motor Vehicle Report


Washington Metropolitan Area Transit Authority, a Federal contractor, is an Equal Opportunity / Affirmative Action employer.  All qualified applicants receive consideration for employment without regard to race, color, creed, religion, national origin, sex, gender, gender identity, age, sexual orientation, genetic information, physical or mental disability, or status as a protected veteran, or any other status protected by applicable federal law, except where a bona fide occupational qualification exists.  Our hiring process is designed to be accessible and free from discrimination.

This posting is an announcement of a vacant position under recruitment.  It is not intended to replace the official job description.  Job Descriptions are available upon confirmation of an interview.

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